Messages in this thread |  | | Date | Sat, 5 Jan 2013 11:45:38 +0100 | From | Michal Hocko <> | Subject | Re: [PATCH V3 2/8] Make TestSetPageDirty and dirty page accounting in one func |
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On Sat 05-01-13 10:49:00, Sha Zhengju wrote: [...] > >> Here is some test numbers that before/after this patch: > >> Test steps(Mem-4g, ext4): > >> drop_cache; sync > >> fio (ioengine=sync/write/buffered/bs=4k/size=1g/numjobs=2/group_reporting/thread) > > > > Could also add some rationale why you think this test is relevant? > > > > The test is aiming at finding the impact of performance due to lock > contention by writing parallel > to the same file. I'll add the reason next version too.
Please make sure to describe which locks are exercised during that test and how much.
Thanks [...] -- Michal Hocko SUSE Labs
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