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330 lines
13 KiB
Python
Executable File
330 lines
13 KiB
Python
Executable File
#!/usr/bin/env python
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import os
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import re
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# This was created to list all processes with their real-time priorities.
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# If there is a standard way to do that, that would be preferred.
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def get_task_stats(pid, tid):
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try:
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f = open("/proc/%s/task/%s/stat" % (str(pid), str(tid)))
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except:
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return None
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s = f.read()
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f.close()
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return s
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def get_all_task_stats():
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p = []
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for f in os.listdir("/proc"):
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try:
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pid = int(f)
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except:
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continue
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for g in os.listdir("/proc/%d/task" % pid):
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try:
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tid = int(g)
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except:
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continue
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s = get_task_stats(pid, tid)
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p.append(s)
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### for g
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### for f
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return p
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def print_all_task_stats(ps):
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print "%5s %-15s %4s %6s %6s" % ("pid", "name", "prio", "utime", "stime")
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for p in ps:
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if not p:
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continue
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m = re.match("([0-9]+) \((.*?)\) (.) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+)", p)
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if not m:
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continue
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print "%5s %-15s %4s %6s %6s" % (m.group(1), m.group(2), m.group(18), m.group(14), m.group(15))
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if __name__ == "__main__":
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ps = get_all_task_stats()
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print_all_task_stats(ps)
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# /proc/[pid]/stat
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# Status information about the process. This is used by ps(1).
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# It is defined in the kernel source file fs/proc/array.c.
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#
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# The fields, in order, with their proper scanf(3) format
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# specifiers, are:
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#
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# (1) pid %d
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# The process ID.
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#
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# (2) comm %s
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# The filename of the executable, in parentheses.
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# This is visible whether or not the executable is
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# swapped out.
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#
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# (3) state %c
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# One of the following characters, indicating process
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# state:
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# R Running
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# S Sleeping in an interruptible wait
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# D Waiting in uninterruptible disk sleep
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# Z Zombie
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# T Stopped (on a signal) or (before Linux 2.6.33)
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# trace stopped
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# t Tracing stop (Linux 2.6.33 onward)
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# W Paging (only before Linux 2.6.0)
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# X Dead (from Linux 2.6.0 onward)
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# x Dead (Linux 2.6.33 to 3.13 only)
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# K Wakekill (Linux 2.6.33 to 3.13 only)
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# W Waking (Linux 2.6.33 to 3.13 only)
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# P Parked (Linux 3.9 to 3.13 only)
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#
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# (4) ppid %d
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# The PID of the parent of this process.
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#
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# (5) pgrp %d
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# The process group ID of the process.
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#
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# (6) session %d
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# The session ID of the process.
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#
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# (7) tty_nr %d
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# The controlling terminal of the process. (The minor
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# device number is contained in the combination of
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# bits 31 to 20 and 7 to 0; the major device number is
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# in bits 15 to 8.)
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#
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# (8) tpgid %d
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# The ID of the foreground process group of the
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# controlling terminal of the process.
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#
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# (9) flags %u
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# The kernel flags word of the process. For bit
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# meanings, see the PF_* defines in the Linux kernel
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# source file include/linux/sched.h. Details depend
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# on the kernel version.
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#
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# The format for this field was %lu before Linux 2.6.
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#
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# (1) minflt %lu
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# The number of minor faults the process has made
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# which have not required loading a memory page from
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# disk.
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#
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# (11) cminflt %lu
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# The number of minor faults that the process's
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# waited-for children have made.
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#
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# (12) majflt %lu
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# The number of major faults the process has made
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# which have required loading a memory page from disk.
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#
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# (13) cmajflt %lu
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# The number of major faults that the process's
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# waited-for children have made.
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#
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# (14) utime %lu
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# Amount of time that this process has been scheduled
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# in user mode, measured in clock ticks (divide by
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# sysconf(_SC_CLK_TCK)). This includes guest time,
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# guest_time (time spent running a virtual CPU, see
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# below), so that applications that are not aware of
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# the guest time field do not lose that time from
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# their calculations.
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#
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# (15) stime %lu
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# Amount of time that this process has been scheduled
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# in kernel mode, measured in clock ticks (divide by
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# sysconf(_SC_CLK_TCK)).
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#
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# (16) cutime %ld
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# Amount of time that this process's waited-for
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# children have been scheduled in user mode, measured
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# in clock ticks (divide by sysconf(_SC_CLK_TCK)).
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# (See also times(2).) This includes guest time,
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# cguest_time (time spent running a virtual CPU, see
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# below).
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#
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# (17) cstime %ld
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# Amount of time that this process's waited-for
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# children have been scheduled in kernel mode,
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# measured in clock ticks (divide by
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# sysconf(_SC_CLK_TCK)).
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#
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# (18) priority %ld
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# (Explanation for Linux 2.6) For processes running a
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# real-time scheduling policy (policy below; see
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# sched_setscheduler(2)), this is the negated
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# scheduling priority, minus one; that is, a number in
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# the range -2 to -100, corresponding to real-time
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# priorities 1 to 99. For processes running under a
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# non-real-time scheduling policy, this is the raw
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# nice value (setpriority(2)) as represented in the
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# kernel. The kernel stores nice values as numbers in
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# the range 0 (high) to 39 (low), corresponding to the
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# user-visible nice range of -20 to 19.
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#
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# Before Linux 2.6, this was a scaled value based on
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# the scheduler weighting given to this process.
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#
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# (19) nice %ld
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# The nice value (see setpriority(2)), a value in the
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# range 19 (low priority) to -20 (high priority).
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#
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# (20) num_threads %ld
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# Number of threads in this process (since Linux 2.6).
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# Before kernel 2.6, this field was hard coded to 0 as
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# a placeholder for an earlier removed field.
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#
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# (21) itrealvalue %ld
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# The time in jiffies before the next SIGALRM is sent
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# to the process due to an interval timer. Since
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# kernel 2.6.17, this field is no longer maintained,
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# and is hard coded as 0.
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#
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# (22) starttime %llu
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# The time the process started after system boot. In
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# kernels before Linux 2.6, this value was expressed
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# in jiffies. Since Linux 2.6, the value is expressed
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# in clock ticks (divide by sysconf(_SC_CLK_TCK)).
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#
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# The format for this field was %lu before Linux 2.6.
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#
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# (23) vsize %lu
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# Virtual memory size in bytes.
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#
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# (24) rss %ld
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# Resident Set Size: number of pages the process has
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# in real memory. This is just the pages which count
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# toward text, data, or stack space. This does not
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# include pages which have not been demand-loaded in,
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# or which are swapped out.
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#
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# (25) rsslim %lu
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# Current soft limit in bytes on the rss of the
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# process; see the description of RLIMIT_RSS in
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# getrlimit(2).
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#
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# (26) startcode %lu
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# The address above which program text can run.
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#
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# (27) endcode %lu
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# The address below which program text can run.
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#
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# (28) startstack %lu
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# The address of the start (i.e., bottom) of the
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# stack.
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#
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# (29) kstkesp %lu
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# The current value of ESP (stack pointer), as found
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# in the kernel stack page for the process.
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#
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# (30) kstkeip %lu
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# The current EIP (instruction pointer).
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#
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# (31) signal %lu
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# The bitmap of pending signals, displayed as a
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# decimal number. Obsolete, because it does not
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# provide information on real-time signals; use
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# /proc/[pid]/status instead.
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#
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# (32) blocked %lu
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# The bitmap of blocked signals, displayed as a
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# decimal number. Obsolete, because it does not
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# provide information on real-time signals; use
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# /proc/[pid]/status instead.
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#
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# (33) sigignore %lu
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# The bitmap of ignored signals, displayed as a
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# decimal number. Obsolete, because it does not
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# provide information on real-time signals; use
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# /proc/[pid]/status instead.
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#
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# (34) sigcatch %lu
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# The bitmap of caught signals, displayed as a decimal
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# number. Obsolete, because it does not provide
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# information on real-time signals; use
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# /proc/[pid]/status instead.
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#
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# (35) wchan %lu
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# This is the "channel" in which the process is
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# waiting. It is the address of a location in the
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# kernel where the process is sleeping. The
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# corresponding symbolic name can be found in
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# /proc/[pid]/wchan.
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#
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# (36) nswap %lu
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# Number of pages swapped (not maintained).
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#
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# (37) cnswap %lu
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# Cumulative nswap for child processes (not
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# maintained).
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#
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# (38) exit_signal %d (since Linux 2.1.22)
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# Signal to be sent to parent when we die.
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#
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# (39) processor %d (since Linux 2.2.8)
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# CPU number last executed on.
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#
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# (40) rt_priority %u (since Linux 2.5.19)
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# Real-time scheduling priority, a number in the range
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# 1 to 99 for processes scheduled under a real-time
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# policy, or 0, for non-real-time processes (see
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# sched_setscheduler(2)).
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#
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# (41) policy %u (since Linux 2.5.19)
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# Scheduling policy (see sched_setscheduler(2)).
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# Decode using the SCHED_* constants in linux/sched.h.
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#
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# The format for this field was %lu before Linux
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# 2.6.22.
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#
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# (42) delayacct_blkio_ticks %llu (since Linux 2.6.18)
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# Aggregated block I/O delays, measured in clock ticks
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# (centiseconds).
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#
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# (43) guest_time %lu (since Linux 2.6.24)
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# Guest time of the process (time spent running a
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# virtual CPU for a guest operating system), measured
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# in clock ticks (divide by sysconf(_SC_CLK_TCK)).
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#
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# (44) cguest_time %ld (since Linux 2.6.24)
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# Guest time of the process's children, measured in
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# clock ticks (divide by sysconf(_SC_CLK_TCK)).
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#
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# (45) start_data %lu (since Linux 3.3)
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# Address above which program initialized and
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# uninitialized (BSS) data are placed.
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#
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# (46) end_data %lu (since Linux 3.3)
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# Address below which program initialized and
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# uninitialized (BSS) data are placed.
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#
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# (47) start_brk %lu (since Linux 3.3)
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# Address above which program heap can be expanded
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# with brk(2).
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#
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# (48) arg_start %lu (since Linux 3.5)
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# Address above which program command-line arguments
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# (argv) are placed.
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#
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# (49) arg_end %lu (since Linux 3.5)
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# Address below program command-line arguments (argv)
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# are placed.
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#
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# (50) env_start %lu (since Linux 3.5)
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# Address above which program environment is placed.
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#
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# (51) env_end %lu (since Linux 3.5)
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# Address below which program environment is placed.
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#
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# (52) exit_code %d (since Linux 3.5)
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# The thread's exit status in the form reported by
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# waitpid(2).
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