On (06/04/15 16:04), Minchan Kim wrote:
[..]
> How about using slab shrinker?
> If there is memory pressure, it would be called by VM and we will
> try compaction without user's intervention and excessive object
> scanning should be avoid by your zs_can_compact.
hm, interesting.
ok, have a patch
On (06/04/15 15:27), Minchan Kim wrote:
[..]
>
> The problem is migration/freeing old zspage/allocating new zspage is
> not a cheap, either.
> If the system has no problem with small fragmented space, there is
> no point to keep such overheads.
>
> So, ideal is we should trigger compaction once we
On Thu, Jun 04, 2015 at 03:27:12PM +0900, Minchan Kim wrote:
> On Thu, Jun 04, 2015 at 02:30:56PM +0900, Sergey Senozhatsky wrote:
> > On (06/04/15 13:57), Minchan Kim wrote:
> > > On Sat, May 30, 2015 at 12:05:25AM +0900, Sergey Senozhatsky wrote:
> > > > perform class compaction in zs_free(), if
On Thu, Jun 04, 2015 at 02:30:56PM +0900, Sergey Senozhatsky wrote:
> On (06/04/15 13:57), Minchan Kim wrote:
> > On Sat, May 30, 2015 at 12:05:25AM +0900, Sergey Senozhatsky wrote:
> > > perform class compaction in zs_free(), if zs_free() has created
> > > a ZS_ALMOST_EMPTY page. this is the most
On (06/04/15 13:57), Minchan Kim wrote:
> On Sat, May 30, 2015 at 12:05:25AM +0900, Sergey Senozhatsky wrote:
> > perform class compaction in zs_free(), if zs_free() has created
> > a ZS_ALMOST_EMPTY page. this is the most trivial `policy'.
>
> Finally, I got realized your intention.
>
> Actually
On Sat, May 30, 2015 at 12:05:25AM +0900, Sergey Senozhatsky wrote:
> perform class compaction in zs_free(), if zs_free() has created
> a ZS_ALMOST_EMPTY page. this is the most trivial `policy'.
Finally, I got realized your intention.
Actually, I had a plan to add /sys/block/zram0/compact_thresho
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