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running processes and system utilization (CPU, memory, disks, network,
sensors) in Python. Supported platforms:
- Linux
- Windows
- macOS
- FreeBSD
- OpenBSD
- NetBSD
- Sun Solaris
- AIX
Works with Python versions from 2.6 to 3.X.
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dA dB � Z) e" e# j$ dC � r(dD dE � Z* e+ r:dF dG � Z, dH dI � Z- dJ dK � Z. e" e# j$ dL � rpdM dN � Z/ e0 d dO dP � � Z1 d dQ dR � Z2 e dS dT � � Z3 e dU dV � � Z4 e5 dW dX � dY dZ � � Z6 d[ d\ � Z7 d] d^ d_ � Z8 e" e# j$ d` � rda db dc � Z9 dd de � Z: df dg dh � Z; e r<di dj � Z< e0 dk dl � � Z= e0 dm dn � � Z> e0 do dp � � Z? e0 dq dr � � Z@ e0 ds dt � � ZA d du dv � ZB d S)wr[ a' Represents an OS process with the given PID.
If PID is omitted current process PID (os.getpid()) is used.
Raise NoSuchProcess if PID does not exist.
Note that most of the methods of this class do not make sure
the PID of the process being queried has been reused over time.
That means you might end up retrieving an information referring
to another process in case the original one this instance
refers to is gone in the meantime.
The only exceptions for which process identity is pre-emptively
checked and guaranteed are:
- parent()
- children()
- nice() (set)
- ionice() (set)
- rlimit() (set)
- cpu_affinity (set)
- suspend()
- resume()
- send_signal()
- terminate()
- kill()
To prevent this problem for all other methods you can:
- use is_running() before querying the process
- if you're continuously iterating over a set of Process
instances use process_iter() which pre-emptively checks
process identity for every yielded instance
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� d | _ Xd S)a# Utility context manager which considerably speeds up the
retrieval of multiple process information at the same time.
Internally different process info (e.g. name, ppid, uids,
gids, ...) may be fetched by using the same routine, but
only one information is returned and the others are discarded.
When using this context manager the internal routine is
executed once (in the example below on name()) and the
other info are cached.
The cache is cleared when exiting the context manager block.
The advice is to use this every time you retrieve more than
one information about the process. If you're lucky, you'll
get a hell of a speedup.
>>> import psutil
>>> p = psutil.Process()
>>> with p.oneshot():
... p.name() # collect multiple info
... p.cpu_times() # return cached value
... p.cpu_percent() # return cached value
... p.create_time() # return cached value
...
>>>
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r?| r8� w� Yn X| | | <q� WWd QRX| S) a� Utility method returning process information as a
hashable dictionary.
If *attrs* is specified it must be a list of strings
reflecting available Process class' attribute names
(e.g. ['cpu_times', 'name']) else all public (read
only) attributes are assumed.
*ad_value* is the value which gets assigned in case
AccessDenied or ZombieProcess exception is raised when
retrieving that particular process information.
Nzinvalid attrs type %szinvalid attr name%s %sr �sry z, r� )�_as_dict_attrnamesr� �list�tuple�set� frozensetr� �typer� �lenr� �map�repr�dictr� r� �getattrr1 r5 �NotImplementedError)
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zProcess.as_dictc C sc | j � } | d k r_ | j � } y& t | � } | j � | k rI | SWn t k
r^ Yn Xd S)z�Return the parent process as a Process object pre-emptively
checking whether PID has been reused.
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N)r r� r[ r3 )r� r �ctime�parentrq rq ru r� s
zProcess.parentc C s_ | j r
d Sy | t | j � k SWn4 t k
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rZ d | _ d SYn Xd S)z�Return whether this process is running.
It also checks if PID has been reused by another process in
which case return False.
FTN)r� r[ r� r5 r3 )r� rq rq ru r� + s
zProcess.is_runningc C s9 t r | j j � S| j p( | j j � | _ | j Sd S)z`The process parent PID.
On Windows the return value is cached after first call.
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z Process.ppidc C s� t r | j d k r | j S| j j � } t r� t | � d k r� y | j � } Wn t k
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| d � } | j | � r� | } | | _ | | j _ | S)z>The process name. The return value is cached after first call.N� r ) r0 r� r� r� r. r� �cmdliner1 r� �path�basename�
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z Process.namec s� � f d d � } � j d k r� y � j j � } Wn2 t k
rh } z | d | � SWYd d } ~ Xn8 X| s� y | d | � } Wn t k
r� Yn X| � _ � j S)z�The process executable as an absolute path.
May also be an empty string.
The return value is cached after first call.
c s� � j � } | rw t t d � rw t t d � rw | d } t j j | � rw t j j | � rw t j | t j � rw | St | t � r� | � | S)N�access�X_OKr )
r� �hasattrr� r� �isabs�isfiler� r� r� r1 )�fallbackr� �exe)r� rq ru �guess_itt s $
z Process.exe.<locals>.guess_itNr� )r� r� r� r1 )r� r� r� �errrq )r� ru r� o s
z Process.exec C s
| j j � S)z3The command line this process has been called with.)r� r� )r� rq rq ru r� � s zProcess.cmdlinec C s. y | j j � SWn t k
r) t SYn Xd S)z2The process current status as a STATUS_* constant.N)r� r� r5 r )r� rq rq ru r� � s
zProcess.statusc C st t rc t d k r t d � � | j � j } y t j | � j SWqp t k
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| j j
� Sd S)ztThe name of the user that owns the process.
On UNIX this is calculated by using *real* process uid.
Nz0requires pwd module shipped with standard python) r. �pwd� ImportErrorr� �real�getpwuid�pw_name�KeyError�strr� �username)r� Zreal_uidrq rq ru r� � s
zProcess.usernamec C s( | j d k r! | j j � | _ | j S)z�The process creation time as a floating point number
expressed in seconds since the epoch, in UTC.
The return value is cached after first call.
N)r� r� r� )r� rq rq ru r� � s zProcess.create_timec C s
| j j � S)z6Process current working directory as an absolute path.)r� �cwd)r� rq rq ru r� � s z Process.cwdc C sN | d k r | j j � S| j � s: t | j | j � � | j j | � d S)z'Get or set process niceness (priority).N)r� Znice_getr� r3 r� r� Znice_set)r� �valuerq rq ru �nice� s
z Process.nicec C s
| j j � S)zVReturn process UIDs as a (real, effective, saved)
namedtuple.
)r� r� )r� rq rq ru r� � s z Process.uidsc C s
| j j � S)zVReturn process GIDs as a (real, effective, saved)
namedtuple.
)r� �gids)r� rq rq ru r� � s z Process.gidsc C s
| j j � S)zVThe terminal associated with this process, if any,
else None.
)r� �terminal)r� rq rq ru r� � s zProcess.terminalc C s
| j j � S)zcReturn the number of file descriptors opened by this
process (POSIX only).
)r� �num_fds)r� rq rq ru r� � s zProcess.num_fds� io_countersc C s
| j j � S)a
Return process I/O statistics as a
(read_count, write_count, read_bytes, write_bytes)
namedtuple.
Those are the number of read/write calls performed and the
amount of bytes read and written by the process.
)r� r� )r� rq rq ru r� � s zProcess.io_counters�
ionice_getc C sH | d k r1 | d k r$ t d � � | j j � S| j j | | � Sd S)a� Get or set process I/O niceness (priority).
On Linux *ioclass* is one of the IOPRIO_CLASS_* constants.
*value* is a number which goes from 0 to 7. The higher the
value, the lower the I/O priority of the process.
On Windows only *ioclass* is used and it can be set to 2
(normal), 1 (low) or 0 (very low).
Available on Linux and Windows > Vista only.
Nz$'ioclass' argument must be specified)r� r� r� Z
ionice_set)r� �ioclassr� rq rq ru �ionice� s
zProcess.ionice�rlimitc C s3 | d k r | j j | � S| j j | | � Sd S)a" Get or set process resource limits as a (soft, hard)
tuple.
*resource* is one of the RLIMIT_* constants.
*limits* is supposed to be a (soft, hard) tuple.
See "man prlimit" for further info.
Available on Linux only.
N)r� r� )r� �resourceZlimitsrq rq ru r� s
zProcess.rlimit�cpu_affinity_getc C s� | d k r% t t | j j � � � S| sp t | j d � rO | j j � } n! t t t t d d � � � � } | j j
t t | � � � d S)a- Get or set process CPU affinity.
If specified, *cpus* must be a list of CPUs for which you
want to set the affinity (e.g. [0, 1]).
If an empty list is passed, all egible CPUs are assumed
(and set).
(Windows, Linux and BSD only).
N�_get_eligible_cpus�percpuT) r� r� r� r� r� r� r� �ranger� rc Zcpu_affinity_set)r� Zcpusrq rq ru � cpu_affinity s !zProcess.cpu_affinity�cpu_numc C s
| j j � S)aZ Return what CPU this process is currently running on.
The returned number should be <= psutil.cpu_count()
and <= len(psutil.cpu_percent(percpu=True)).
It may be used in conjunction with
psutil.cpu_percent(percpu=True) to observe the system
workload distributed across CPUs.
)r� r )r� rq rq ru r 3 s zProcess.cpu_num�environc C s
| j j � S)z�The environment variables of the process as a dict. Note: this
might not reflect changes made after the process started. )r� r )r� rq rq ru r @ s zProcess.environc C s
| j j � S)z\Return the number of handles opened by this process
(Windows only).
)r� � num_handles)r� rq rq ru r G s zProcess.num_handlesc C s
| j j � S)zkReturn the number of voluntary and involuntary context
switches performed by this process.
)r� �num_ctx_switches)r� rq rq ru r M s zProcess.num_ctx_switchesc C s
| j j � S)z2Return the number of threads used by this process.)r� � num_threads)r� rq rq ru r S s zProcess.num_threads�threadsc C s
| j j � S)z�Return threads opened by process as a list of
(id, user_time, system_time) namedtuples representing
thread id and thread CPU times (user/system).
On OpenBSD this method requires root access.
)r� r )r� rq rq ru r Y s zProcess.threadsc
C s� t � } g } | s� x{| j � D]k \ } } | | j k r" y5 t | � } | j � | j � k rq | j | � Wq" t t f k
r� Yq" Xq" Wn� t j t
� } x+ | j � D] \ } } | | j | � q� Wt � } | j g } x� | r�| j � } | | k r
q� | j
| � xu | | D]i }
yH t |
� } | j � | j � k } | ro| j | � | j |
� Wq"t t f k
r�Yq"Xq"Wq� W| S)u( Return the children of this process as a list of Process
instances, pre-emptively checking whether PID has been reused.
If *recursive* is True return all the parent descendants.
Example (A == this process):
A ─┐
│
├─ B (child) ─┐
│ └─ X (grandchild) ─┐
│ └─ Y (great grandchild)
├─ C (child)
└─ D (child)
>>> import psutil
>>> p = psutil.Process()
>>> p.children()
B, C, D
>>> p.children(recursive=True)
B, X, Y, C, D
Note that in the example above if process X disappears
process Y won't be listed as the reference to process A
is lost.
)r� r� r� r[ r� �appendr3 r5 r� � defaultdictr� r� �pop�add) r� � recursiver} r� r� r �childZreverse_ppid_map�seen�stackZ child_pidZintimerq rq ru �childrena s>
zProcess.childrenc s | d k o | d k } | d k r@ | d k r@ t d | � � t � pL d � � f d d � } | r� | � } | j j � } t j | � | � } | j j � } nX | j } | j } | � } | j j � } | d k s� | d k r� | | _ | | _ d S| j | j | j | j } | | } | | _ | | _ y | | d }
Wn t
k
rcd SYn X|
� } t | d � Sd S) a Return a float representing the current process CPU
utilization as a percentage.
When *interval* is 0.0 or None (default) compares process times
to system CPU times elapsed since last call, returning
immediately (non-blocking). That means that the first time
this is called it will return a meaningful 0.0 value.
When *interval* is > 0.0 compares process times to system CPU
times elapsed before and after the interval (blocking).
In this case is recommended for accuracy that this function
be called with at least 0.1 seconds between calls.
A value > 100.0 can be returned in case of processes running
multiple threads on different CPU cores.
The returned value is explicitly NOT split evenly between
all available logical CPUs. This means that a busy loop process
running on a system with 2 logical CPUs will be reported as
having 100% CPU utilization instead of 50%.
Examples:
>>> import psutil
>>> p = psutil.Process(os.getpid())
>>> # blocking
>>> p.cpu_percent(interval=1)
2.0
>>> # non-blocking (percentage since last call)
>>> p.cpu_percent(interval=None)
2.9
>>>
Ng r z!interval is not positive (got %r)r c s t � � S)N)�_timerrq )�num_cpusrq ru �timer� s z"Process.cpu_percent.<locals>.timer�d ) r� rf r� rc r� �sleepr� r� �user�system�ZeroDivisionError�round) r� �interval�blockingr Zst1Zpt1Zst2Zpt2Z
delta_procZ
delta_timeZoverall_cpus_percentZsingle_cpu_percentrq )r ru rd � s: #
zProcess.cpu_percentc C s
| j j � S)a% Return a (user, system, children_user, children_system)
namedtuple representing the accumulated process time, in
seconds.
This is similar to os.times() but per-process.
On macOS and Windows children_user and children_system are
always set to 0.
)r� rc )r� rq rq ru rc s zProcess.cpu_timesc C s
| j j � S)a Return a namedtuple with variable fields depending on the
platform, representing memory information about the process.
The "portable" fields available on all plaforms are `rss` and `vms`.
All numbers are expressed in bytes.
)r� r� )r� rq rq ru r� s zProcess.memory_info� replacementr� c C s
| j � S)N)r� )r� rq rq ru �memory_info_ex s zProcess.memory_info_exc C s
| j j � S)a] This method returns the same information as memory_info(),
plus, on some platform (Linux, macOS, Windows), also provides
additional metrics (USS, PSS and swap).
The additional metrics provide a better representation of actual
process memory usage.
Namely USS is the memory which is unique to a process and which
would be freed if the process was terminated right now.
It does so by passing through the whole process address.
As such it usually requires higher user privileges than
memory_info() and is considerably slower.
)r� �memory_full_info)r� rq rq ru r s zProcess.memory_full_info�rssc C s� t t j j � } | | k r: t d | t | � f � � | t j j k rU | j n | j } | � } t | | � } t
p� t � j } | d k s� t d | � � | t
| � d S)a� Compare process memory to total physical system memory and
calculate process memory utilization as a percentage.
*memtype* argument is a string that dictates what type of
process memory you want to compare against (defaults to "rss").
The list of available strings can be obtained like this:
>>> psutil.Process().memory_info()._fields
('rss', 'vms', 'shared', 'text', 'lib', 'data', 'dirty', 'uss', 'pss')
z&invalid memtype %r; valid types are %rr z`can't calculate process memory percent because total physical system memory is not positive (%r)r )r� r~ Zpfullmem�_fieldsr� r� Zpmemr� r r� �
_TOTAL_PHYMEMra �total�float)r� ZmemtypeZ valid_typesr� Zmetricsr� Z total_phymemrq rq ru �memory_percent- s
zProcess.memory_percent� memory_mapsTc s� | j j � } | r� i � xk | D]c } | d } | d d � } y$ t d d � � | | � � | <Wq" t k
r� | � | <Yq" Xq" Wt j � � � f d d � � D� St j � � f d d � | D� Sd S) a� Return process' mapped memory regions as a list of namedtuples
whose fields are variable depending on the platform.
If *grouped* is True the mapped regions with the same 'path'
are grouped together and the different memory fields are summed.
If *grouped* is False every mapped region is shown as a single
entity and the namedtuple will also include the mapped region's
address space ('addr') and permission set ('perms').
� � Nc S s | | S)Nrq )r| �yrq rq ru �<lambda>^ s z%Process.memory_maps.<locals>.<lambda>c s# g | ] } � | � | � � q Srq rq )rs r� )�d�ntrq ru rv b s z'Process.memory_maps.<locals>.<listcomp>c s g | ] } � | � � q Srq rq )rs r| )r+ rq ru rv e s )r� r% r� r� r~ Z
pmmap_groupedZ pmmap_ext)r� Zgrouped�itZtuplr� �numsrq )r* r+ ru r% L s
$
zProcess.memory_mapsc C s
| j j � S)z�Return files opened by process as a list of
(path, fd) namedtuples including the absolute file name
and file descriptor number.
)r� �
open_files)r� rq rq ru r. g s zProcess.open_files�inetc C s | j j | � S)aT Return socket connections opened by process as a list of
(fd, family, type, laddr, raddr, status) namedtuples.
The *kind* parameter filters for connections that match the
following criteria:
+------------+----------------------------------------------------+
| Kind Value | Connections using |
+------------+----------------------------------------------------+
| inet | IPv4 and IPv6 |
| inet4 | IPv4 |
| inet6 | IPv6 |
| tcp | TCP |
| tcp4 | TCP over IPv4 |
| tcp6 | TCP over IPv6 |
| udp | UDP |
| udp4 | UDP over IPv4 |
| udp6 | UDP over IPv6 |
| unix | UNIX socket (both UDP and TCP protocols) |
| all | the sum of all the possible families and protocols |
+------------+----------------------------------------------------+
)r� � connections)r� �kindrq rq ru r0 n s zProcess.connectionsc C s | j d k s t | j � � | j d k r: t d � � y t j | j | � Wn� t k
r} z� | j t j k r� t r� t | j � r� t
| j | j | j � � n d | _
t | j | j � � | j t j t j f k r� t | j | j � � � WYd d } ~ Xn Xd S)Nr z�preventing sending signal to process with PID 0 as it would affect every process in the process group of the calling process (os.getpid()) instead of PID 0T)r� �AssertionErrorr� r� �kill�OSError�errnoZESRCHr, r] r5 r� r� r� r3 �EPERM�EACCESr1 )r� �sigr� rq rq ru � _send_signal� s zProcess._send_signalc C s� t r | j | � nn | t j k r5 | j j � nO | t t d t � � t t d t � � f k rx | j j | � n t d � � d S)z�Send a signal *sig* to process pre-emptively checking
whether PID has been reused (see signal module constants) .
On Windows only SIGTERM is valid and is treated as an alias
for kill().
Z CTRL_C_EVENTZCTRL_BREAK_EVENTzPonly SIGTERM, CTRL_C_EVENT and CTRL_BREAK_EVENT signals are supported on WindowsN)
r. r9 �signal�SIGTERMr� r3 r� �object� send_signalr� )r� r8 rq rq ru r= � s zProcess.send_signalc C s* t r | j t j � n
| j j � d S)z�Suspend process execution with SIGSTOP pre-emptively checking
whether PID has been reused.
On Windows this has the effect ot suspending all process threads.
N)r. r9 r: �SIGSTOPr� �suspend)r� rq rq ru r? � s zProcess.suspendc C s* t r | j t j � n
| j j � d S)z�Resume process execution with SIGCONT pre-emptively checking
whether PID has been reused.
On Windows this has the effect of resuming all process threads.
N)r. r9 r: �SIGCONTr� �resume)r� rq rq ru rA � s zProcess.resumec C s* t r | j t j � n
| j j � d S)z�Terminate the process with SIGTERM pre-emptively checking
whether PID has been reused.
On Windows this is an alias for kill().
N)r. r9 r: r; r� r3 )r� rq rq ru � terminate� s zProcess.terminatec C s* t r | j t j � n
| j j � d S)zjKill the current process with SIGKILL pre-emptively checking
whether PID has been reused.
N)r. r9 r: �SIGKILLr� r3 )r� rq rq ru r3 � s z Process.killc C s5 | d k r% | d k r% t d � � | j j | � S)a� Wait for process to terminate and, if process is a children
of os.getpid(), also return its exit code, else None.
If the process is already terminated immediately return None
instead of raising NoSuchProcess.
If *timeout* (in seconds) is specified and process is still
alive raise TimeoutExpired.
To wait for multiple Process(es) use psutil.wait_procs().
Nr z"timeout must be a positive integer)r� r� �wait)r� �timeoutrq rq ru rD � s z Process.wait)Cr� r� � __qualname__�__doc__r� r� r� �__repr__r� r� r� �propertyr� �
contextlib�contextmanagerr� r� r� r� r r r� r� r� r� r� r� r� r� r. r� r� r� r� r� r~ r[ r� r� r� r r r r0 r r r r r� r rd rc r� r r r r$ r% r. r0 r9 r= r? rA rB r3 rD rq rq rq ru r[ 1 s� / >, '
E\
c sg e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d
d � Z d � f d
d � Z � S)r\ az A more convenient interface to stdlib subprocess.Popen class.
It starts a sub process and deals with it exactly as when using
subprocess.Popen class but in addition also provides all the
properties and methods of psutil.Process class as a unified
interface:
>>> import psutil
>>> from subprocess import PIPE
>>> p = psutil.Popen(["python", "-c", "print 'hi'"], stdout=PIPE)
>>> p.name()
'python'
>>> p.uids()
user(real=1000, effective=1000, saved=1000)
>>> p.username()
'giampaolo'
>>> p.communicate()
('hi
', None)
>>> p.terminate()
>>> p.wait(timeout=2)
0
>>>
For method names common to both classes such as kill(), terminate()
and wait(), psutil.Process implementation takes precedence.
Unlike subprocess.Popen this class pre-emptively checks whether PID
has been reused on send_signal(), terminate() and kill() so that
you don't accidentally terminate another process, fixing
http://bugs.python.org/issue6973.
For a complete documentation refer to:
http://docs.python.org/library/subprocess.html
c O s2 t j | | � | _ | j | j j d d �d S)Nr� T)�
subprocessr\ �_Popen__subprocr� r� )r� r� r� rq rq ru r� s zPopen.__init__c C s# t t t t � t t j � � � S)N)�sortedr� �dirr\ rL )r� rq rq ru �__dir__ s z
Popen.__dir__c C s# t | j d � r | j j � | S)N� __enter__)r� rM rQ )r� rq rq ru rQ # s
zPopen.__enter__c
O s} t | j d � r% | j j | | � S| j r; | j j � | j rQ | j j � z | j rj | j j � Wd | j � Xd S)N�__exit__)r� rM rR �stdout�close�stderr�stdinrD )r� r� r� rq rq ru rR ( s
zPopen.__exit__c C su y t j | | � SWnZ t k
rp y t j | j | � SWn. t k
rk t d | j j | f � � Yn XYn Xd S)Nz!%s instance has no attribute '%s')r< �__getattribute__r� rM r� r� )r� r� rq rq ru rW 8 s
zPopen.__getattribute__Nc sD | j j d k r | j j St t | � j | � } | | j _ | S)N)rM �
returncode�superr\ rD )r� rE r� )r� rq ru rD B s
z
Popen.wait)
r� r� rF rG r� rP rQ rR rW rD rq rq )r� ru r\ � s !
c C s2 g | ]( } | j d � r | d k r | � q S)�_r= r? rA rB r3 rD r� r� r� r r� r r� )
r= r? rA rB r3 rD r� r� r� r r� r r� )r� )rs r| rq rq ru rv L s c C s
t j � S)z&Return a list of current running PIDs.)r~ r^ rq rq rq ru r^ W s c C s@ | d k r d S| d k r/ t r/ | t � k St j | � Sd S)z�Return True if given PID exists in the current process list.
This is faster than doing "pid in psutil.pids()" and
should be preferred.
r FN)r. r^ r~ r] )r� rq rq ru r] \ s
c
# s� � � f d d � } d d � } t t � � } t t j � � } | | } | | } x | D] } | | � q] Wxt t t j � � t t j | � j � � � D]� \ } } yd | d k r� | | � VnF | j � r� d k r� | j
d � d � � | _ | Vn | | � VWq� t k
r1| | � Yq� t
k
r�| d k r{| t k r{y
t | VWq~t k
rwYq~Xn � Yq� Xq� Wd S)a Return a generator yielding a Process instance for all
running processes.
Every new Process instance is only created once and then cached
into an internal table which is updated every time this is used.
Cached Process instances are checked for identity so that you're
safe in case a PID has been reused by another process, in which
case the cached instance is updated.
The sorting order in which processes are yielded is based on
their PIDs.
*attrs* and *ad_value* have the same meaning as in
Process.as_dict(). If *attrs* is specified as_dict() is called
and the resulting dict is stored as a 'info' attribute attached
to returned Process instance.
If *attrs* is an empty list it will retrieve all process info
(slow).
c sD t | � } � d k r3 | j d � d � � | _ | t | j <| S)Nr� r� )r[ r� r� �_pmapr� )r� �proc)r� r� rq ru r � s
zprocess_iter.<locals>.addc S s t j | d � d S)N)r[ r
)r� rq rq ru �remove� s z process_iter.<locals>.removeNr� r� )r� r^ r[ �keysrN r� r� r� �fromkeysr� r� r� r3 r1 r� )
r� r� r r] �a�bZnew_pidsZ gone_pidsr� r\ rq )r� r� ru r_ q s8
)
c s| � � f d d � } | d k rD | d k rD d | } t | � � t � � t | � } � d k r� t � � r� t d t � � | d k r� t � | } x� | r7| d k r� | d k r� Pxj | D]b } d t | � } | d k rt | t � | � } | d k r P| | | � q� | | | � q� W| � } q� W| rfx | D] } | | d � qEW| � } t � � t | � f S)a, Convenience function which waits for a list of processes to
terminate.
Return a (gone, alive) tuple indicating which processes
are gone and which ones are still alive.
The gone ones will have a new *returncode* attribute indicating
process exit status (may be None).
*callback* is a function which gets called every time a process
terminates (a Process instance is passed as callback argument).
Function will return as soon as all processes terminate or when
*timeout* occurs.
Differently from Process.wait() it will not raise TimeoutExpired if
*timeout* occurs.
Typical use case is:
- send SIGTERM to a list of processes
- give them some time to terminate
- send SIGKILL to those ones which are still alive
Example:
>>> def on_terminate(proc):
... print("process {} terminated".format(proc))
...
>>> for p in procs:
... p.terminate()
...
>>> gone, alive = wait_procs(procs, timeout=3, callback=on_terminate)
>>> for p in alive:
... p.kill()
c st y | j d | � } Wn t k
r* YnF X| d k sD | j � rp | | _ � j | � � d k rp � | � d S)NrE )rD r4 r� rX r )r\ rE rX )�callback�gonerq ru �
check_gone� s
z wait_procs.<locals>.check_goneNr z*timeout must be a positive integer, got %sz callback %r is not a callableg �?)r� r� �callabler� r r� �minr� ) ZprocsrE rb rd r� �aliveZdeadliner\ Z max_timeoutrq )rb rc ru r` � s6 $
Tc C sC | r t j � } n t j � } | d k r? | d k r? d } | S)az Return the number of logical CPUs in the system (same as
os.cpu_count() in Python 3.4).
If *logical* is False return the number of physical cores only
(e.g. hyper thread CPUs are excluded).
Return None if undetermined.
The return value is cached after first call.
If desired cache can be cleared like this:
>>> psutil.cpu_count.cache_clear()
Nr )r~ Zcpu_count_logicalZcpu_count_physical)Zlogicalr� rq rq ru rf s Fc C s | s t j � St j � Sd S)a� Return system-wide CPU times as a namedtuple.
Every CPU time represents the seconds the CPU has spent in the
given mode. The namedtuple's fields availability varies depending on the
platform:
- user
- system
- idle
- nice (UNIX)
- iowait (Linux)
- irq (Linux, FreeBSD)
- softirq (Linux)
- steal (Linux >= 2.6.11)
- guest (Linux >= 2.6.24)
- guest_nice (Linux >= 3.2.0)
When *percpu* is True return a list of namedtuples for each CPU.
First element of the list refers to first CPU, second element
to second CPU and so on.
The order of the list is consistent across calls.
N)r~ rc Z
per_cpu_times)r� rq rq ru rc + s
r� c C sB t | � } t r> | t | d d � 8} | t | d d � 8} | S)zWGiven a cpu_time() ntuple calculates the total CPU time
(including idle time).
Zguestr Z
guest_nice)�sumr) r� )�timesZtotrq rq ru �
_cpu_tot_timeV s
rj c C s3 t | � } | | j 8} | t | d d � 8} | S)zlGiven a cpu_time() ntuple calculates the busy CPU time.
We do so by subtracting all idle CPU times.
Ziowaitr )rj �idler� )ri Zbusyrq rq ru �_cpu_busy_timei s
rl c C s� | j | j k s$ t | | f � � g } xL t j j D]> } t | | � t | | � } t d | � } | j | � q7 Wt j | � S)Nr )r r2 r~ � scputimesr� �maxr )�t1�t2Z field_deltas�field� field_deltarq rq ru �_cpu_times_deltasy s $ rs c C s; | d k o | d k } | d k r@ | d k r@ t d | � � d d � } | s� | rq t � } t j | � n t } | d k r� t � } t � a | | t � Sg } | r� t d d � } t j | � n! t } | d k r� t d d � } t d d � a x3 t | t � D]" \ } } | j | | | � � q
W| Sd S) a� Return a float representing the current system-wide CPU
utilization as a percentage.
When *interval* is > 0.0 compares system CPU times elapsed before
and after the interval (blocking).
When *interval* is 0.0 or None compares system CPU times elapsed
since last call or module import, returning immediately (non
blocking). That means the first time this is called it will
return a meaningless 0.0 value which you should ignore.
In this case is recommended for accuracy that this function be
called with at least 0.1 seconds between calls.
When *percpu* is True returns a list of floats representing the
utilization as a percentage for each CPU.
First element of the list refers to first CPU, second element
to second CPU and so on.
The order of the list is consistent across calls.
Examples:
>>> # blocking, system-wide
>>> psutil.cpu_percent(interval=1)
2.0
>>>
>>> # blocking, per-cpu
>>> psutil.cpu_percent(interval=1, percpu=True)
[2.0, 1.0]
>>>
>>> # non-blocking (percentage since last call)
>>> psutil.cpu_percent(interval=None)
2.9
>>>
Ng r z!interval is not positive (got %r)c S sc t | | � } t | � } t | � } y | | d } Wn t k
rQ d SYn Xt | d � Sd S)Nr g r )rs rj rl r r )ro rp � times_delta� all_deltaZ
busy_deltaZ busy_percrq rq ru � calculate� s
z cpu_percent.<locals>.calculater� T)r� rc r� r �_last_cpu_times�_last_per_cpu_times�zipr )r r� r rv ro r� �tot1rp rq rq ru rd � s0 %
c C s; | d k o | d k } | d k r@ | d k r@ t d | � � d d � } | s� | rq t � } t j | � n t } | d k r� t � } t � a | | t � Sg } | r� t d d � } t j | � n! t } | d k r� t d d � } t d d � a x3 t | t � D]" \ } } | j | | | � � q
W| Sd S) a� Same as cpu_percent() but provides utilization percentages
for each specific CPU time as is returned by cpu_times().
For instance, on Linux we'll get:
>>> cpu_times_percent()
cpupercent(user=4.8, nice=0.0, system=4.8, idle=90.5, iowait=0.0,
irq=0.0, softirq=0.0, steal=0.0, guest=0.0, guest_nice=0.0)
>>>
*interval* and *percpu* arguments have the same meaning as in
cpu_percent().
Ng r z!interval is not positive (got %r)c S s� g } t | | � } t | � } d t d | � } xL | D]D } | | } t | d � } t t d | � d � } | j | � q; Wt j | � S)Ng Y@r g )rs rj rn r rf r r~ rm )ro rp r- rt ru Zscalerr Z
field_percrq rq ru rv � s
z$cpu_times_percent.<locals>.calculater� T)r� rc r� r �_last_cpu_times_2�_last_per_cpu_times_2ry r )r r� r rv ro r� rz rp rq rq ru re � s0
c C s
t j � S)zReturn CPU statistics.)r~ rg rq rq rq ru rg 1 s �cpu_freqc
C s� t j � } | r | St t | � � } | d k r8 d S| d k rL | d Sd \ } } } x5 | D]- } | | j 7} | | j 7} | | j 7} qb W| | } | | } | | } t j | | | � Sd S)a9 Return CPU frequency as a nameduple including current,
min and max frequency expressed in Mhz.
If *percpu* is True and the system supports per-cpu frequency
retrieval (Linux only) a list of frequencies is returned for
each CPU. If not a list with one element is returned.
r Nr � )r~ r~ r~ ) r~ r} r# r� �currentrf rn r �scpufreq)
r� r� r ZcurrsZminsZmaxsZcpur Zmin_Zmax_rq rq ru r} 8 s"
c C s t j � } | j a | S)a� Return statistics about system memory usage as a namedtuple
including the following fields, expressed in bytes:
- total:
total physical memory available.
- available:
the memory that can be given instantly to processes without the
system going into swap.
This is calculated by summing different memory values depending
on the platform and it is supposed to be used to monitor actual
memory usage in a cross platform fashion.
- percent:
the percentage usage calculated as (total - available) / total * 100
- used:
memory used, calculated differently depending on the platform and
designed for informational purposes only:
macOS: active + inactive + wired
BSD: active + wired + cached
Linux: total - free
- free:
memory not being used at all (zeroed) that is readily available;
note that this doesn't reflect the actual memory available
(use 'available' instead)
Platform-specific fields:
- active (UNIX):
memory currently in use or very recently used, and so it is in RAM.
- inactive (UNIX):
memory that is marked as not used.
- buffers (BSD, Linux):
cache for things like file system metadata.
- cached (BSD, macOS):
cache for various things.
- wired (macOS, BSD):
memory that is marked to always stay in RAM. It is never moved to disk.
- shared (BSD):
memory that may be simultaneously accessed by multiple processes.
The sum of 'used' and 'available' does not necessarily equal total.
On Windows 'available' and 'free' are the same.
)r~ ra r" r! )r� rq rq ru ra \ s 5 c C s
t j � S)a� Return system swap memory statistics as a namedtuple including
the following fields:
- total: total swap memory in bytes
- used: used swap memory in bytes
- free: free swap memory in bytes
- percent: the percentage usage
- sin: no. of bytes the system has swapped in from disk (cumulative)
- sout: no. of bytes the system has swapped out from disk (cumulative)
'sin' and 'sout' on Windows are meaningless and always set to 0.
)r~ rb rq rq rq ru rb � s
c C s
t j | � S)z�Return disk usage statistics about the given *path* as a
namedtuple including total, used and free space expressed in bytes
plus the percentage usage.
)r~ rn )r� rq rq ru rn � s c C s
t j | � S)a3 Return mounted partitions as a list of
(device, mountpoint, fstype, opts) namedtuple.
'opts' field is a raw string separated by commas indicating mount
options which may vary depending on the platform.
If *all* parameter is False return physical devices only and ignore
all others.
)r~ rm )�allrq rq ru rm � s c C s� t r t d | � n i } t j | � } | s> | r: i Sd S| rS t | d � } t t d t j � } | r� x* | j � D] \ } } | | � | | <q{ W| S| d d � t | j
� � D� � Sd S)a� Return system disk I/O statistics as a namedtuple including
the following fields:
- read_count: number of reads
- write_count: number of writes
- read_bytes: number of bytes read
- write_bytes: number of bytes written
- read_time: time spent reading from disk (in ms)
- write_time: time spent writing to disk (in ms)
Platform specific:
- busy_time: (Linux, FreeBSD) time spent doing actual I/Os (in ms)
- read_merged_count (Linux): number of merged reads
- write_merged_count (Linux): number of merged writes
If *perdisk* is True return the same information for every
physical disk installed on the system as a dictionary
with partition names as the keys and the namedtuple
described above as the values.
If *nowrap* is True it detects and adjust the numbers which overflow
and wrap (restart from 0) and add "old value" to "new value" so that
the returned numbers will always be increasing or remain the same,
but never decrease.
"disk_io_counters.cache_clear()" can be used to invalidate the
cache.
On recent Windows versions 'diskperf -y' command may need to be
executed first otherwise this function won't find any disk.
�perdiskNzpsutil.disk_io_counters�sdiskioc S s g | ] } t | � � q Srq )rh )rs r| rq rq ru rv � s z$disk_io_counters.<locals>.<listcomp>) r) r� r~ rl �
_wrap_numbersr� r r� r� ry �values)r� �nowrapr� �rawdictr+ Zdisk�fieldsrq rq ru rl � s zpsutil.disk_io_countersz Clears nowrap argument cachec C s� t j � } | s | r i Sd S| r5 t | d � } | ro x- | j � D] \ } } t j | � | | <qH W| St j d d � t | j � � D� � Sd S)ad Return network I/O statistics as a namedtuple including
the following fields:
- bytes_sent: number of bytes sent
- bytes_recv: number of bytes received
- packets_sent: number of packets sent
- packets_recv: number of packets received
- errin: total number of errors while receiving
- errout: total number of errors while sending
- dropin: total number of incoming packets which were dropped
- dropout: total number of outgoing packets which were dropped
(always 0 on macOS and BSD)
If *pernic* is True return the same information for every
network interface installed on the system as a dictionary
with network interface names as the keys and the namedtuple
described above as the values.
If *nowrap* is True it detects and adjust the numbers which overflow
and wrap (restart from 0) and add "old value" to "new value" so that
the returned numbers will always be increasing or remain the same,
but never decrease.
"disk_io_counters.cache_clear()" can be used to invalidate the
cache.
Nzpsutil.net_io_countersc S s g | ] } t | � � q Srq )rh )rs r| rq rq ru rv s z#net_io_counters.<locals>.<listcomp>)r~ rh r� r� r �snetiory r� )Zpernicr� r� Znicr� rq rq ru rh � s zpsutil.net_io_countersr/ c C s
t j | � S)a� Return system-wide socket connections as a list of
(fd, family, type, laddr, raddr, status, pid) namedtuples.
In case of limited privileges 'fd' and 'pid' may be set to -1
and None respectively.
The *kind* parameter filters for connections that fit the
following criteria:
+------------+----------------------------------------------------+
| Kind Value | Connections using |
+------------+----------------------------------------------------+
| inet | IPv4 and IPv6 |
| inet4 | IPv4 |
| inet6 | IPv6 |
| tcp | TCP |
| tcp4 | TCP over IPv4 |
| tcp6 | TCP over IPv6 |
| udp | UDP |
| udp4 | UDP over IPv4 |
| udp6 | UDP over IPv6 |
| unix | UNIX socket (both UDP and TCP protocols) |
| all | the sum of all the possible families and protocols |
+------------+----------------------------------------------------+
On macOS this function requires root privileges.
)r~ ri )r1 rq rq ru ri % s c C sc t j d k } | r! d d l } t j � } | j d d d � � t j t � } x| D]� \ } } } } } } | r� y | j | � } WnW t
k
r� t r� | d k r� t j } n' t
t d � r� t j | k r� t j } Yn X| t j k r/t r� d
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x' | j |
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|
7} qW| | j t j | | | | | � � qY Wt | � S)a* Return the addresses associated to each NIC (network interface
card) installed on the system as a dictionary whose keys are the
NIC names and value is a list of namedtuples for each address
assigned to the NIC. Each namedtuple includes 5 fields:
- family: can be either socket.AF_INET, socket.AF_INET6 or
psutil.AF_LINK, which refers to a MAC address.
- address: is the primary address and it is always set.
- netmask: and 'broadcast' and 'ptp' may be None.
- ptp: stands for "point to point" and references the
destination address on a point to point interface
(typically a VPN).
- broadcast: and *ptp* are mutually exclusive.
Note: you can have more than one address of the same family
associated with each interface.
r' � r N�keyc S s | d S)Nr rq )r| rq rq ru r) X s z net_if_addrs.<locals>.<lambda>r rX �:�-� z%s00)r' r� ���)�sysrV �socketr~ rj �sortr� r r� �
AddressFamilyr� r0 rX r� r. �countr r �snicaddrr� ) Z has_enumsr� Zrawlistr� r� Zfam�addr�mask� broadcast�ptp� separatorrq rq ru rj B s,
*c C s
t j � S)a Return information about each NIC (network interface card)
installed on the system as a dictionary whose keys are the
NIC names and value is a namedtuple with the following fields:
- isup: whether the interface is up (bool)
- duplex: can be either NIC_DUPLEX_FULL, NIC_DUPLEX_HALF or
NIC_DUPLEX_UNKNOWN
- speed: the NIC speed expressed in mega bits (MB); if it can't
be determined (e.g. 'localhost') it will be set to 0.
- mtu: the maximum transmission unit expressed in bytes.
)r~ rk rq rq rq ru rk r s �sensors_temperaturesc
s� � f d d � } t j t � } t j � } x� | j � D]� \ } } x� | r� | j d � \ } } } } | | � } | | � } | | � } | r� | r� | } n | r� | r� | } | | j t j | | | | � � qI Wq: Wt
| � S)a< Return hardware temperatures. Each entry is a namedtuple
representing a certain hardware sensor (it may be a CPU, an
hard disk or something else, depending on the OS and its
configuration).
All temperatures are expressed in celsius unless *fahrenheit*
is set to True.
c s0 | d k r, � r( t | � d d d S| Sd S)N� r� � )r# )�n)�
fahrenheitrq ru �convert� s z%sensors_temperatures.<locals>.convertr ) r� r r� r~ r� r� r
r r �shwtempr� )
r� r� r� r� r� r� �labelr �high�criticalrq )r� ru r� � s
!� sensors_fansc C s
t j � S)z�Return fans speed. Each entry is a namedtuple
representing a certain hardware sensor.
All speed are expressed in RPM (rounds per minute).
)r~ r� rq rq rq ru r� � s �sensors_batteryc C s
t j � S)a� Return battery information. If no battery is installed
returns None.
- percent: battery power left as a percentage.
- secsleft: a rough approximation of how many seconds are left
before the battery runs out of power. May be
POWER_TIME_UNLIMITED or POWER_TIME_UNLIMITED.
- power_plugged: True if the AC power cable is connected.
)r~ r� rq rq rq ru r� � s
c C s
t j � S)zAReturn the system boot time expressed in seconds since the epoch.)r~ rp rq rq rq ru rp � s c C s
t j � S)a� Return users currently connected on the system as a list of
namedtuples including the following fields.
- user: the name of the user
- terminal: the tty or pseudo-tty associated with the user, if any.
- host: the host name associated with the entry, if any.
- started: the creation time as a floating point number expressed in
seconds since the epoch.
)r~ ro rq rq rq ru ro � s
c C s
t j � S)zjReturn a generator yielding a WindowsService instance for all
Windows services installed.
)r~ �win_service_iterrq rq rq ru r� � s r� c C s
t j | � S)zjGet a Windows service by *name*.
Raise NoSuchProcess if no service with such name exists.
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C s> t j j � } d } d d d d d d g } t rM | j d � | j d � t | d � x�t d | d d � D]�} | j d r� t j j | j d � } | j � | k r� | j d � } q� | j d � } n d } t
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r+d } Yn Xt rQd | k rQ| j d � d } | j d rxt | j d j d � p{d } | j d r�t | j d j d � p�d } | j d r�t | j d d � p�d } t | | d d � | j d | | | | j j d d � pd | | | j d j � p.d f � qq Wd S) zNList info of all currently running processes emulating ps aux
output.
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r r r r r r r r r r r r r r r r r r r r! r" r# r$ r% r& r' r( r) r* r+ r, r- r. r/ r0 � _exceptionsr1 r2 r3 r4 r5 Z PROCFS_PATHr6 r~ r7 r8 r9 r: Z HAS_PRLIMITrG r; r< r= r> r? r@ rA rB rC rD rE rF ZRLIMIT_MSGQUEUEr� Z RLIMIT_NICEZ
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