Re: [PATCH 0/3] allow zram to use zbud as underlying allocator

Vlastimil Babka
2015-09-14T14:02:04Z

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?

> patches I tried to generalize what I've done to enable zbud for zram so far.