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children_usert children_systemt iowaitc C sj t | t � s t | � � t j | � } | j d � d } | j d � rf t | � rf | d } n | S( s Wrapper around os.readlink().t i s
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Used by Process.open_files().
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d | } t j | t j � S( s� Return True if the given name refers to a root device (e.g.
"sda", "nvme0n1") as opposed to a logical partition (e.g. "sda1",
"nvme0n1p1"). If name is a virtual device (e.g. "loop1", "ram")
return True.
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rg | t k ra | S� n Xd S( s� Return file content.
fallback: the value returned in case the file does not exist or
cannot be read
binary: whether to open the file in binary or text mode.
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s� Fallback for kernels < 3.14 where /proc/meminfo does not provide
"MemAvailable:" column, see:
https://blog.famzah.net/2014/09/24/
This code reimplements the algorithm outlined here:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
commit/?id=34e431b0ae398fc54ea69ff85ec700722c9da773
XXX: on recent kernels this calculation differs by ~1.5% than
"MemAvailable:" as it's calculated slightly differently, see:
https://gitlab.com/procps-ng/procps/issues/42
https://github.com/famzah/linux-memavailable-procfs/issues/2
It is still way more realistic than doing (free + cached) though.
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This implementation matches "free" and "vmstat -s" cmdline
utility values and procps-ng-3.3.12 source was used as a reference
(2016-09-18):
https://gitlab.com/procps-ng/procps/blob/
24fd2605c51fccc375ab0287cec33aa767f06718/proc/sysinfo.c
For reference, procps-ng-3.3.10 is the version available on Ubuntu
16.04.
Note about "available" memory: up until psutil 4.3 it was
calculated as "avail = (free + buffers + cached)". Now
"MemAvailable:" column (kernel 3.14) from /proc/meminfo is used as
it's more accurate.
That matches "available" column in newer versions of "free".
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%s/meminfoi i i Ns MemTotal:s MemFree:s Buffers:RV s Cached:RW s
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CPU times:
(user, nice, system, idle, iowait, irq, softirq [steal, [guest,
[guest_nice]]])
Last 3 fields may not be available on all Linux kernel versions.
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s� Return frequency metrics for all CPUs.
Contrarily to other OSes, Linux updates these values in
real-time.
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min and max frequencies are not available and are set to None.
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d d � Z RS( sw A wrapper on top of /proc/net/* files, retrieving per-process
and system-wide open connections (TCP, UDP, UNIX) similarly to
"netstat -an".
Note: in case of UNIX sockets we're only able to determine the
local endpoint/path, not the one it's connected to.
According to [1] it would be possible but not easily.
[1] http://serverfault.com/a/417946
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rBt � s<t � qC� n Xt j | | � S( s� Accept an "ip:port" address as displayed in /proc/net/*
and convert it into a human readable form, like:
"0500000A:0016" -> ("10.0.0.5", 22)
"0000000000000000FFFF00000100007F:9E49" -> ("::ffff:127.0.0.1", 40521)
The IP address portion is a little or big endian four-byte
hexadecimal number; that is, the least significant byte is listed
first, so we need to reverse the order of the bytes to convert it
to an IP address.
The port is represented as a two-byte hexadecimal number.
Reference:
http://linuxdevcenter.com/pub/a/linux/2000/11/16/LinuxAdmin.html
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t j | � S( s$ Return system-wide open connections.( t _connectionsR` ( R\ ( ( s5 /usr/lib64/python2.7/site-packages/psutil/_pslinux.pyt net_connections� s c C s� t d t � � � } | j � } Wd QXi } x� | d D]� } | j d � } | d k sl t t | � � � | | j � } | | d j � j � } t t | � \ } } } }
} } }
} } } } } } } } } | | | | | | |
| f | | <q9 W| S( ss Return network I/O statistics for every network interface
installed on the system as a dict of raw tuples.
s
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t DUPLEX_HALFR t DUPLEX_UNKNOWNR{ t keyst
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} } | r� t | � r� qu n | t 9} |
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system as a dict of raw tuples.
c s s� t d t � � � } | j � } Wd QXx`| D]X} | j � } t | � } | d k r� | d } t | d � } t t | d d !� \
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c C s� t � } t � } t d | � �x } xn | D]f } | j � } | j d � sc | j | j � � q, | j d � d } | d k r, | j d � q, q, WWd QX| d k r� t j j d � r� t j j
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r�d } q�Xn | d k ry t | � d } Wq2t k
r.d } q2XqqW| | j d | | | f � qWn t | � S( s� Return hardware (CPU and others) temperatures as a dict
including hardware name, label, current, max and critical
temperatures.
Implementation notes:
- /sys/class/hwmon looks like the most recent interface to
retrieve this info, and this implementation relies on it
only (old distros will probably use something else)
- lm-sensors on Ubuntu 16.04 relies on /sys/class/hwmon
- /sys/class/thermal/thermal_zone* is another one but it's more
difficult to parse
s /sys/class/hwmon/hwmon*/temp*_*s& /sys/class/hwmon/hwmon*/device/temp*_*R� i t _inputg @�@R� R� s ignoring %r for file %rt _maxR� t _critt _labelRT s /sys/class/thermal/thermal_zone*t tempt types /trip_point*i t _typet criticalt _tempt highN( t collectionsR R+ R� t extendt sortedR� R� R� R� R� Re R� t dirnamet FalseR� R� R� R� R� R� R� R� R� t dict( R
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$c C s6 t j t � } t j d � } | s6 t j d � } n t t g | D] } | j d � d ^ qC � � } x� | D]� } y t t | d � � } Wn0 t t
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dict including hardware label and current speed.
Implementation notes:
- /sys/class/hwmon looks like the most recent interface to
retrieve this info, and this implementation relies on it
only (old distros will probably use something else)
- lm-sensors on Ubuntu 16.04 relies on /sys/class/hwmon
s /sys/class/hwmon/hwmon*/fan*_*s% /sys/class/hwmon/hwmon*/device/fan*_*R� i R� s ignoring %rR� R� R� R� RT ( R� R R+ R� R� R� R� R� R� R� R� R� R� R� R� Re R� R� R� R� R t sfanR� ( R
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$ !c s. t � � � f d � } g t j t � D] } | j d � r( | ^ q( } | sS d St j j t t | � d � } | | d | d � } | | d | d � } | | d | d � } | d k s� | d k r� d S| d k ry d
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rt j } n Xt j | | | � S( s Return battery information.
Implementation note: it appears /sys/class/power_supply/BAT0/
directory structure may vary and provide files with the same
meaning but under different names, see:
https://github.com/giampaolo/psutil/issues/966
c sM xF | D]> } t | d � �} | � k r | j � rA t | � S| Sq Wd S( sv Attempt to read the content of multiple files which may
not exist. If none of them exist return None.
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r� | t
� k SXd S( sc Check for the existence of a unix PID. Linux TIDs are not
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pid_existsR� R R R� R� R� R� t EnvironmentErrorR3 ( R/ Re R� R� t tgid( ( s5 /usr/lib64/python2.7/site-packages/psutil/_pslinux.pyR� � s
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rg q X| j d � } | | d j � } t | d � } | | | <q W| S( ss Obtain a {pid: ppid, ...} dict for all running processes in
one shot. Used to speed up Process.children().
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into NoSuchProcess and AccessDenied.
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_assert_alive s c C s t d | j | j f � � } | j � } Wd QX| j d � } | | j d � d | !} | | d j � } i } | | d <| d | d <| d | d
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process info.
Using "man proc" as a reference: where "man proc" refers to
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The return value is cached in case oneshot() ctx manager is
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