On Mon, Sep 14, 2015 at 4:01 PM, Vlastimil Babka <vba...@suse.cz> wrote: > > On 09/14/2015 03:49 PM, 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 > > > I'm sure Minchan will want to hear the details of that :) > >> operation. By using zbud I lose in compression ratio but gain in >> determinism, lower latencies and lower fragmentation, so in the coming > > > I doubt the "lower fragmentation" part given what I've read about the design > of zbud and zsmalloc?
As it turns out, I see more cases of compaction kicking in and significantly more compact_stalls with zsmalloc. ~vitaly -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
