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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>