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Date: Tue, 24 Jun 2008 22:43:06 +1000 From: AP <ap@....com.au> To: Michael Kerrisk <mtk.manpages@...glemail.com> Cc: Laurent Vivier <Laurent.Vivier@...l.net>, Michael Kerrisk <mtk.manpages@...il.com>, Samuel Thibault <samuel.thibault@...-lyon.org>, lkml <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>, Christian Borntraeger <borntraeger@...ibm.com>, trivial@...nel.org 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@....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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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