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Subject[PATCH] Documentation: add descs for guest fields in stat procfs files
Git patch 5e84cfde51cf303d368fcb48f22059f37b3872de introduced a new
field to /proc/stat that represents guest (virtual cpu) time.

Git patch 9ac52315d4cf5f561f36dabaf0720c00d3553162 introduced the same
to /proc/<pid>/stat along with a guest time of the tasks children.

The patch below adds descriptions of these fields to the procfs
documentation included in the kernel.

Signed-Off-By: Andrew P <ap@zip.com.au>

diff -aur linux-2.6.26-rc7-git2.orig/Documentation/filesystems/proc.txt linux-2.6.26-rc7-git2/Documentation/filesystems/proc.txt
--- linux-2.6.26-rc7-git2.orig/Documentation/filesystems/proc.txt 2008-06-23 22:27:13.000000000 +1000
+++ linux-2.6.26-rc7-git2/Documentation/filesystems/proc.txt 2008-06-24 22:16:53.000000000 +1000
@@ -210,9 +210,9 @@
cmin_flt number of minor faults with child's
maj_flt number of major faults
cmaj_flt number of major faults with child's
- utime user mode jiffies
+ utime user mode jiffies (including gtime below*)
stime kernel mode jiffies
- cutime user mode jiffies with child's
+ cutime user mode jiffies with child's (including cgtime below*)
cstime kernel mode jiffies with child's
priority priority level
nice nice level
@@ -239,6 +239,11 @@
rt_priority realtime priority
policy scheduling policy (man sched_setscheduler)
blkio_ticks time spent waiting for block IO
+ gtime guest (virtual CPU) CPU time in jiffies
+ cgtime guests' children's CPU time in jiffies
+
+* gtime and cgtime are included in these values so that applications that are
+ not aware of these fields do not lose time in their calculations.
..............................................................................


@@ -828,9 +833,9 @@
since the system first booted. For a quick look, simply cat the file:

> cat /proc/stat
- cpu 2255 34 2290 22625563 6290 127 456 0
- cpu0 1132 34 1441 11311718 3675 127 438 0
- cpu1 1123 0 849 11313845 2614 0 18 0
+ cpu 2255 34 2290 22625563 6290 127 456 0 0
+ cpu0 1132 34 1441 11311718 3675 127 438 0 0
+ cpu1 1123 0 849 11313845 2614 0 18 0 0
intr 114930548 113199788 3 0 5 263 0 4 [... lots more numbers ...]
ctxt 1990473
btime 1062191376
@@ -843,7 +848,8 @@
different kinds of work. Time units are in USER_HZ (typically hundredths of a
second). The meanings of the columns are as follows, from left to right:

-- user: normal processes executing in user mode
+- user: normal processes executing in user mode (includes guest time below so
+ that guest-unaware applications do not lose time)
- nice: niced processes executing in user mode
- system: processes executing in kernel mode
- idle: twiddling thumbs
@@ -851,6 +857,7 @@
- irq: servicing interrupts
- softirq: servicing softirqs
- steal: involuntary wait
+- guest: time used to run a virtual CPU

The "intr" line gives counts of interrupts serviced since boot time, for each
of the possible system interrupts. The first column is the total of all

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