lkml.org 
[lkml]   [2015]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 0/3] allow zram to use zbud as underlying allocator
    On (09/14/15 15:49), Vitaly Wool wrote:
    > While using ZRAM on a small RAM footprint devices, together with KSM,
    > I ran into several occasions when moving pages from compressed swap back
    > into the "normal" part of RAM caused significant latencies in system operation.
    > By using zbud I lose in compression ratio but gain in determinism, lower
    > latencies and lower fragmentation, so in the coming patches I tried to
    > generalize what I've done to enable zbud for zram so far.
    >

    do you have CONFIG_PGTABLE_MAPPING enabled or disabled? or
    kmap_atomic/memcpy/kunmap_atomic is not the root cause here?
    can you provide more details please?

    -ss


    \
     
     \ /
      Last update: 2015-09-15 03:01    [W:2.719 / U:0.008 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site