Messages in this thread | | | From | Zhao Lei <> | Subject | [PATCH v2 0/3] cpuacct: Show all detail stats in one file | Date | Fri, 13 May 2016 18:18:02 +0800 |
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In current code, we can get cpuacct data from severial files, but each file have its lilmit.
For example: we can get cpu usage in user and kernel mode by cpuacct.stat, but we can't get detail data of each cpu in above file. we can get each cpu's kernel mode usage in cpuacct.usage_percpu_sys, but we can't get user mode data in the same time.
This patch introduce cpuacct.usage_all, to show all detailed cpu accounting data altogether: # cat cpuacct.usage_all cpu user system 0 3809760299 5807968992 1 3250329855 454612211 ..
Any aspects of statistics data can be get from this file with a simple data-processing code.
Changelog v1->v2: 1: Rewrite subject and changelog to fix typos and make it more accurate. 2: Use a variable for the cpustat array itself to make code clean(avoid lot of 'kcpustat->'). 3: Add missed newline between variable definitions and the first non-definition C statement. Above are suggested by: Ingo Molnar <mingo.kernel.org@gmail.com> 4: Remove '[]' in CPUID, to make it easier to parse. Suggested by: Peter Zijlstra <peterz@infradead.org>
Zhao Lei (3): cpuacct: Merge cpuacct_usage_index and cpuacct_stat_index cpuacct: Use loop to avoid copies of the similar code in cpuacct_stats_show() cpuacct: Show all detail stats in one file
kernel/sched/cpuacct.c | 114 +++++++++++++++++++++++++++++++------------------ 1 file changed, 73 insertions(+), 41 deletions(-)
-- 1.8.5.1
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