Messages in this thread | | | Subject | Re: [PATCH 0/3] allow zram to use zbud as underlying allocator | From | Vlastimil Babka <> | Date | Wed, 30 Sep 2015 17:37:35 +0200 |
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On 09/25/2015 11:54 AM, Vitaly Wool wrote: > Hello Minchan, > > the main use case where I see unacceptably long stalls in UI with > zsmalloc is switching between users in Android. > There is a way to automate user creation and switching between them so > the test I run both to get vmstat statistics and to profile stalls is > to create a user, switch to it and switch back. Each test cycle does > that 10 times, and all the results presented below are averages for 20 > runs. > > Kernel configurations used for testing: > > (1): vanilla > (2): (1) plus "make SLUB atomic" patch [1] > (3): (1) with zbud instead of zsmalloc > (4): (2) with compaction defer logic mostly disabled
Disabling compaction deferring leads to less compaction stalls? That indeed looks very weird and counter-intuitive. Also what's "mostly" disabled mean?
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