From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 07/10] zsmalloc: introduce auto-compact support
Date: Thu, 4 Jun 2015 23:47:30 +0900 [thread overview]
Message-ID: <20150604144730.GA484@swordfish> (raw)
In-Reply-To: <20150604070416.GK2241@blaptop>
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 to trigger compaction from shrinker, but need to test
it more.
will send the updated patchset tomorrow, I think.
-ss
> The concern I had about fragmentation spread out all over pageblock
> should be solved as another issue. I'm plaing to make zsmalloced
> page migratable. I hope we should work out it firstly to prevent
> system heavy memory fragmentation by automatic compaction.
>
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WARNING: multiple messages have this Message-ID (diff)
From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 07/10] zsmalloc: introduce auto-compact support
Date: Thu, 4 Jun 2015 23:47:30 +0900 [thread overview]
Message-ID: <20150604144730.GA484@swordfish> (raw)
In-Reply-To: <20150604070416.GK2241@blaptop>
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 to trigger compaction from shrinker, but need to test
it more.
will send the updated patchset tomorrow, I think.
-ss
> The concern I had about fragmentation spread out all over pageblock
> should be solved as another issue. I'm plaing to make zsmalloced
> page migratable. I hope we should work out it firstly to prevent
> system heavy memory fragmentation by automatic compaction.
>
next prev parent reply other threads:[~2015-06-04 14:48 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-29 15:05 [RFC][PATCH 00/10] zsmalloc auto-compaction Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 01/10] zsmalloc: drop unused variable `nr_to_migrate' Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-06-04 2:04 ` Minchan Kim
2015-06-04 2:04 ` Minchan Kim
2015-06-04 2:10 ` Sergey Senozhatsky
2015-06-04 2:10 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 02/10] zsmalloc: always keep per-class stats Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-06-04 2:18 ` Minchan Kim
2015-06-04 2:18 ` Minchan Kim
2015-06-04 2:34 ` Sergey Senozhatsky
2015-06-04 2:34 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 03/10] zsmalloc: introduce zs_can_compact() function Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-06-04 2:55 ` Minchan Kim
2015-06-04 2:55 ` Minchan Kim
2015-06-04 3:15 ` Sergey Senozhatsky
2015-06-04 3:15 ` Sergey Senozhatsky
2015-06-04 3:30 ` Minchan Kim
2015-06-04 3:30 ` Minchan Kim
2015-06-04 3:42 ` Sergey Senozhatsky
2015-06-04 3:42 ` Sergey Senozhatsky
2015-06-04 3:50 ` Minchan Kim
2015-06-04 3:50 ` Minchan Kim
2015-06-04 4:19 ` Sergey Senozhatsky
2015-06-04 4:19 ` Sergey Senozhatsky
2015-06-04 3:31 ` Sergey Senozhatsky
2015-06-04 3:31 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 04/10] zsmalloc: cosmetic compaction code adjustments Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-06-04 3:14 ` Minchan Kim
2015-06-04 3:14 ` Minchan Kim
2015-05-29 15:05 ` [RFC][PATCH 05/10] zsmalloc: add `num_migrated' to zs_pool Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 06/10] zsmalloc: move compaction functions Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 07/10] zsmalloc: introduce auto-compact support Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-06-04 4:57 ` Minchan Kim
2015-06-04 4:57 ` Minchan Kim
2015-06-04 5:30 ` Sergey Senozhatsky
2015-06-04 5:30 ` Sergey Senozhatsky
2015-06-04 6:27 ` Minchan Kim
2015-06-04 6:27 ` Minchan Kim
2015-06-04 7:04 ` Minchan Kim
2015-06-04 7:04 ` Minchan Kim
2015-06-04 14:47 ` Sergey Senozhatsky [this message]
2015-06-04 14:47 ` Sergey Senozhatsky
2015-06-04 7:28 ` Sergey Senozhatsky
2015-06-04 7:28 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 08/10] zsmalloc: export zs_pool `num_migrated' Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 09/10] zram: remove `num_migrated' from zram_stats Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-05-29 15:05 ` [RFC][PATCH 10/10] zsmalloc: lower ZS_ALMOST_FULL waterline Sergey Senozhatsky
2015-05-29 15:05 ` Sergey Senozhatsky
2015-06-03 5:09 ` [RFC][PATCH 00/10] zsmalloc auto-compaction Sergey Senozhatsky
2015-06-03 5:09 ` Sergey Senozhatsky
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