Messages in this thread | | | Date | Mon, 27 Jan 2014 05:27:10 -0700 | From | Thavatchai Makphaibulchoke <> | Subject | Re: [PATCH v4 0/3] ext4: increase mbcache scalability |
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On 01/24/2014 11:09 PM, Andreas Dilger wrote: > I think the ext4 block groups are locked with the blockgroup_lock that has about the same number of locks as the number of cores, with a max of 128, IIRC. See blockgroup_lock.h. > > While there is some chance of contention, it is also unlikely that all of the cores are locking this area at the same time. > > Cheers, Andreas >
Thanks Andreas for the suggestion. Will try that versus adding just a new private spinlock array in mbcache and compare the performance.
Thanks, Mak.
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