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@@ -69,7 +69,7 @@
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.\" Document /////////////////////////////////////////////////////////////
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.\" ----------------------------------------------------------------------
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.TH TOP 1 "March 2017" "procps-ng" "User Commands"
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.TH TOP 1 "May 2017" "procps-ng" "User Commands"
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.\" ----------------------------------------------------------------------
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.\" ----------------------------------------------------------------------
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@@ -765,19 +765,26 @@ Zero in this field simply means priority will not be adjusted in determining
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a task's dispatch-ability.
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.TP 4
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14.\fB OOMa \*(Em Out of Memory Adjustment Factor \fR
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14.\fB NU \*(Em Last known NUMA node \fR
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A number representing the NUMA node associated with the last used processor (`P').
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When -1 is displayed it means that NUMA information is not available.
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\*(XC `'2' and `3' \*(CIs for additional NUMA provisions affecting the \*(SA.
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.TP 4
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15.\fB OOMa \*(Em Out of Memory Adjustment Factor \fR
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The value, ranging from -1000 to +1000, added to the current out of memory
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score (OOMs) which is then used to determine which task to kill when memory
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is exhausted.
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.TP 4
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15.\fB OOMs \*(Em Out of Memory Score \fR
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16.\fB OOMs \*(Em Out of Memory Score \fR
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The value, ranging from 0 to +1000, used to select task(s) to kill when memory
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is exhausted.
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Zero translates to `never kill' whereas 1000 means `always kill'.
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.TP 4
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16.\fB P \*(Em Last used \*(PU (SMP) \fR
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17.\fB P \*(Em Last used \*(PU (SMP) \fR
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A number representing the last used processor.
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In a true SMP environment this will likely change frequently since the kernel
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intentionally uses weak affinity.
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@@ -786,7 +793,7 @@ processes to change \*(PUs more often (because of the extra demand for
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\*(Pu time).
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.TP 4
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17.\fB PGRP \*(Em Process Group Id \fR
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18.\fB PGRP \*(Em Process Group Id \fR
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Every process is member of a unique process group which is used for
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distribution of signals and by terminals to arbitrate requests for their
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input and output.
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@@ -796,7 +803,7 @@ By convention, this value equals the process ID (\*(Xa PID) of the first
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member of a process group, called the process group leader.
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.TP 4
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18.\fB PID \*(Em Process Id \fR
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19.\fB PID \*(Em Process Id \fR
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The task's unique process ID, which periodically wraps, though never
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restarting at zero.
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In kernel terms, it is a dispatchable entity defined by a task_struct.
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@@ -807,11 +814,11 @@ a thread group ID for the thread group leader (\*(Xa TGID);
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and a TTY process group ID for the process group leader (\*(Xa TPGID).
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.TP 4
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19.\fB PPID \*(Em Parent Process Id \fR
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20.\fB PPID \*(Em Parent Process Id \fR
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The process ID (pid) of a task's parent.
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.TP 4
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20.\fB PR \*(Em Priority \fR
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21.\fB PR \*(Em Priority \fR
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The scheduling priority of the task.
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If you see `rt' in this field, it means the task is running
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under real time scheduling priority.
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@@ -821,7 +828,7 @@ the operating itself was not preemptible.
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And while the 2.6 kernel can be made mostly preemptible, it is not always so.
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.TP 4
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21.\fB RES \*(Em Resident Memory Size (KiB) \fR
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22.\fB RES \*(Em Resident Memory Size (KiB) \fR
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A subset of the virtual address space (VIRT) representing the non-swapped
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\*(MP a task is currently using.
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It is also the sum of the RSan, RSfd and RSsh fields.
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@@ -836,35 +843,35 @@ modified, act as a dedicated \*(MS and thus will never impact SWAP.
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\*(XX.
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.TP 4
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22.\fB RSan \*(Em Resident Anonymous Memory Size (KiB) \fR
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23.\fB RSan \*(Em Resident Anonymous Memory Size (KiB) \fR
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A subset of resident memory (RES) representing private pages not
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mapped to a file.
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.TP 4
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23.\fB RSfd \*(Em Resident File-Backed Memory Size (KiB) \fR
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24.\fB RSfd \*(Em Resident File-Backed Memory Size (KiB) \fR
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A subset of resident memory (RES) representing the implicitly shared
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pages supporting program images and shared libraries.
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It also includes explicit file mappings, both private and shared.
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.TP 4
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24.\fB RSlk \*(Em Resident Locked Memory Size (KiB) \fR
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25.\fB RSlk \*(Em Resident Locked Memory Size (KiB) \fR
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A subset of resident memory (RES) which cannot be swapped out.
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.TP 4
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25.\fB RSsh \*(Em Resident Shared Memory Size (KiB) \fR
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26.\fB RSsh \*(Em Resident Shared Memory Size (KiB) \fR
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A subset of resident memory (RES) representing the explicitly shared
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anonymous shm*/mmap pages.
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.TP 4
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26.\fB RUID \*(Em Real User Id \fR
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27.\fB RUID \*(Em Real User Id \fR
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The\fI real\fR user ID.
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.TP 4
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27.\fB RUSER \*(Em Real User Name \fR
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28.\fB RUSER \*(Em Real User Name \fR
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The\fI real\fR user name.
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.TP 4
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28.\fB S \*(Em Process Status \fR
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29.\fB S \*(Em Process Status \fR
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The status of the task which can be one of:
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\fBD\fR = uninterruptible sleep
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\fBR\fR = running
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@@ -879,7 +886,7 @@ Even without a true SMP machine, you may see numerous tasks in this state
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depending on \*(We's delay interval and nice value.
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.TP 4
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29.\fB SHR \*(Em Shared Memory Size (KiB) \fR
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30.\fB SHR \*(Em Shared Memory Size (KiB) \fR
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A subset of resident memory (RES) that may be used by other processes.
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It will include shared anonymous pages and shared file-backed pages.
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It also includes private pages mapped to files representing
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@@ -888,7 +895,7 @@ program images and shared libraries.
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\*(XX.
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.TP 4
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30.\fB SID \*(Em Session Id \fR
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31.\fB SID \*(Em Session Id \fR
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A session is a collection of process groups (\*(Xa PGRP),
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usually established by the login shell.
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A newly forked process joins the session of its creator.
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@@ -897,11 +904,11 @@ member of the session, called the session leader, which is usually the
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login shell.
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.TP 4
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31.\fB SUID \*(Em Saved User Id \fR
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32.\fB SUID \*(Em Saved User Id \fR
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The\fI saved\fR user ID.
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.TP 4
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32.\fB SUPGIDS \*(Em Supplementary Group IDs \fR
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33.\fB SUPGIDS \*(Em Supplementary Group IDs \fR
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The IDs of any supplementary group(s) established at login or
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inherited from a task's parent.
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They are displayed in a comma delimited list.
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@@ -914,7 +921,7 @@ Even so, such variable width fields could still suffer truncation.
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any truncated data.
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.TP 4
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33.\fB SUPGRPS \*(Em Supplementary Group Names \fR
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34.\fB SUPGRPS \*(Em Supplementary Group Names \fR
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The names of any supplementary group(s) established at login or
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inherited from a task's parent.
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They are displayed in a comma delimited list.
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@@ -927,24 +934,24 @@ Even so, such variable width fields could still suffer truncation.
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any truncated data.
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.TP 4
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34.\fB SUSER \*(Em Saved User Name \fR
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35.\fB SUSER \*(Em Saved User Name \fR
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The\fI saved\fR user name.
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.TP 4
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35.\fB SWAP \*(Em Swapped Size (KiB) \fR
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36.\fB SWAP \*(Em Swapped Size (KiB) \fR
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The formerly resident portion of a task's address space written
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to the \*(MS when \*(MP becomes over committed.
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\*(XX.
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.TP 4
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36.\fB TGID \*(Em Thread Group Id \fR
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37.\fB TGID \*(Em Thread Group Id \fR
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The ID of the thread group to which a task belongs.
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It is the PID of the thread group leader.
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In kernel terms, it represents those tasks that share an mm_struct.
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.TP 4
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37.\fB TIME \*(Em \*(PU Time \fR
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38.\fB TIME \*(Em \*(PU Time \fR
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Total \*(PU time the task has used since it started.
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When Cumulative mode is \*O, each process is listed with the \*(Pu
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time that it and its dead children have used.
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@@ -952,19 +959,19 @@ You toggle Cumulative mode with `S', which is both a \*(CO and an \*(CI.
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\*(XC `S' \*(CI for additional information regarding this mode.
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.TP 4
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38.\fB TIME+ \*(Em \*(PU Time, hundredths \fR
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39.\fB TIME+ \*(Em \*(PU Time, hundredths \fR
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The same as TIME, but reflecting more granularity through hundredths
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of a second.
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.TP 4
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39.\fB TPGID \*(Em Tty Process Group Id \fR
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40.\fB TPGID \*(Em Tty Process Group Id \fR
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The process group ID of the foreground process for the connected tty,
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or \-1 if a process is not connected to a terminal.
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By convention, this value equals the process ID (\*(Xa PID) of the
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process group leader (\*(Xa PGRP).
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.TP 4
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40.\fB TTY \*(Em Controlling Tty \fR
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41.\fB TTY \*(Em Controlling Tty \fR
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The name of the controlling terminal.
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This is usually the device (serial port, pty, etc.) from which the
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process was started, and which it uses for input or output.
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@@ -972,22 +979,22 @@ However, a task need not be associated with a terminal, in which case
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you'll see `?' displayed.
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.TP 4
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41.\fB UID \*(Em User Id \fR
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42.\fB UID \*(Em User Id \fR
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The\fI effective\fR user ID of the task's owner.
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.TP 4
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42.\fB USED \*(Em Memory in Use (KiB) \fR
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43.\fB USED \*(Em Memory in Use (KiB) \fR
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This field represents the non-swapped \*(MP a task is using (RES) plus
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the swapped out portion of its address space (SWAP).
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\*(XX.
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.TP 4
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43.\fB USER \*(Em User Name \fR
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44.\fB USER \*(Em User Name \fR
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The\fI effective\fR user name of the task's owner.
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.TP 4
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44.\fB VIRT \*(Em Virtual Memory Size (KiB) \fR
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45.\fB VIRT \*(Em Virtual Memory Size (KiB) \fR
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The total amount of \*(MV used by the task.
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It includes all code, data and shared libraries plus pages that have been
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swapped out and pages that have been mapped but not used.
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@@ -995,13 +1002,13 @@ swapped out and pages that have been mapped but not used.
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\*(XX.
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.TP 4
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45.\fB WCHAN \*(Em Sleeping in Function \fR
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46.\fB WCHAN \*(Em Sleeping in Function \fR
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This field will show the name of the kernel function in which the task
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is currently sleeping.
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Running tasks will display a dash (`\-') in this column.
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.TP 4
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46.\fB nDRT \*(Em Dirty Pages Count \fR
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47.\fB nDRT \*(Em Dirty Pages Count \fR
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The number of pages that have been modified since they were last
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written to \*(AS.
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Dirty pages must be written to \*(AS before the corresponding physical
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@@ -1010,7 +1017,7 @@ memory location can be used for some other virtual page.
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This field was deprecated with linux 2.6 and is always zero.
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.TP 4
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47.\fB nMaj \*(Em Major Page Fault Count \fR
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48.\fB nMaj \*(Em Major Page Fault Count \fR
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The number of\fB major\fR page faults that have occurred for a task.
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A page fault occurs when a process attempts to read from or write to a
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virtual page that is not currently present in its address space.
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@@ -1018,7 +1025,7 @@ A major page fault is when \*(AS access is involved in making that
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page available.
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.TP 4
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48.\fB nMin \*(Em Minor Page Fault count \fR
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49.\fB nMin \*(Em Minor Page Fault count \fR
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The number of\fB minor\fR page faults that have occurred for a task.
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A page fault occurs when a process attempts to read from or write to a
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virtual page that is not currently present in its address space.
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@@ -1026,50 +1033,50 @@ A minor page fault does not involve \*(AS access in making that
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page available.
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.TP 4
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49.\fB nTH \*(Em Number of Threads \fR
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50.\fB nTH \*(Em Number of Threads \fR
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The number of threads associated with a process.
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.TP 4
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50.\fB nsIPC \*(Em IPC namespace \fR
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51.\fB nsIPC \*(Em IPC namespace \fR
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The Inode of the namespace used to isolate interprocess communication (IPC)
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resources such as System V IPC objects and POSIX message queues.
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.TP 4
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51.\fB nsMNT \*(Em MNT namespace \fR
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52.\fB nsMNT \*(Em MNT namespace \fR
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The Inode of the namespace used to isolate filesystem mount points thus
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offering different views of the filesystem hierarchy.
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.TP 4
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52.\fB nsNET \*(Em NET namespace \fR
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53.\fB nsNET \*(Em NET namespace \fR
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The Inode of the namespace used to isolate resources such as network devices,
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IP addresses, IP routing, port numbers, etc.
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.TP 4
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53.\fB nsPID \*(Em PID namespace \fR
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54.\fB nsPID \*(Em PID namespace \fR
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The Inode of the namespace used to isolate process ID numbers
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meaning they need not remain unique.
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Thus, each such namespace could have its own `init/systemd' (PID #1) to
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manage various initialization tasks and reap orphaned child processes.
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.TP 4
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54.\fB nsUSER \*(Em USER namespace \fR
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55.\fB nsUSER \*(Em USER namespace \fR
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The Inode of the namespace used to isolate the user and group ID numbers.
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Thus, a process could have a normal unprivileged user ID outside a user
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namespace while having a user ID of 0, with full root privileges, inside
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that namespace.
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.TP 4
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55.\fB nsUTS \*(Em UTS namespace \fR
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56.\fB nsUTS \*(Em UTS namespace \fR
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The Inode of the namespace used to isolate hostname and NIS domain name.
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UTS simply means "UNIX Time-sharing System".
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.TP 4
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56.\fB vMj \*(Em Major Page Fault Count Delta\fR
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57.\fB vMj \*(Em Major Page Fault Count Delta\fR
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The number of\fB major\fR page faults that have occurred since the
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last update (see nMaj).
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.TP 4
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57.\fB vMn \*(Em Minor Page Fault Count Delta\fR
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58.\fB vMn \*(Em Minor Page Fault Count Delta\fR
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The number of\fB minor\fR page faults that have occurred since the
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last update (see nMin).
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