From: Vlastimil Babka <vbabka@suse.cz>
To: Vitaly Wool <vitalywool@gmail.com>,
minchan@kernel.org, sergey.senozhatsky@gmail.com,
ddstreet@ieee.org
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 0/3] allow zram to use zbud as underlying allocator
Date: Mon, 14 Sep 2015 16:01:58 +0200 [thread overview]
Message-ID: <55F6D356.5000106@suse.cz> (raw)
In-Reply-To: <20150914154901.92c5b7b24e15f04d8204de18@gmail.com>
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.
WARNING: multiple messages have this Message-ID (diff)
From: Vlastimil Babka <vbabka@suse.cz>
To: Vitaly Wool <vitalywool@gmail.com>,
minchan@kernel.org, sergey.senozhatsky@gmail.com,
ddstreet@ieee.org
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 0/3] allow zram to use zbud as underlying allocator
Date: Mon, 14 Sep 2015 16:01:58 +0200 [thread overview]
Message-ID: <55F6D356.5000106@suse.cz> (raw)
In-Reply-To: <20150914154901.92c5b7b24e15f04d8204de18@gmail.com>
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.
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next prev parent reply other threads:[~2015-09-14 14:02 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-14 13:49 [PATCH 0/3] allow zram to use zbud as underlying allocator Vitaly Wool
2015-09-14 13:49 ` Vitaly Wool
2015-09-14 13:50 ` [PATCH 1/3] zram: make max_zpage_size configurable Vitaly Wool
2015-09-14 13:50 ` Vitaly Wool
2015-09-15 1:00 ` Sergey Senozhatsky
2015-09-15 1:00 ` Sergey Senozhatsky
2015-09-15 7:18 ` Vitaly Wool
2015-09-15 7:38 ` Sergey Senozhatsky
2015-09-15 7:38 ` Sergey Senozhatsky
2015-09-15 5:42 ` Dan Streetman
2015-09-15 5:42 ` Dan Streetman
2015-09-15 6:08 ` Sergey Senozhatsky
2015-09-15 6:08 ` Sergey Senozhatsky
2015-09-14 13:51 ` [PATCH 2/3] zpool/zsmalloc/zbud: align on interfaces Vitaly Wool
2015-09-14 13:51 ` Vitaly Wool
2015-09-15 1:06 ` Sergey Senozhatsky
2015-09-15 1:06 ` Sergey Senozhatsky
2015-09-15 5:09 ` Dan Streetman
2015-09-15 5:09 ` Dan Streetman
2015-09-14 13:55 ` [PATCH 3/3] zram: use common zpool interface Vitaly Wool
2015-09-14 13:55 ` Vitaly Wool
2015-09-15 1:12 ` Sergey Senozhatsky
2015-09-15 1:12 ` Sergey Senozhatsky
2015-09-15 6:03 ` Dan Streetman
2015-09-15 6:03 ` Dan Streetman
2015-09-14 14:01 ` Vlastimil Babka [this message]
2015-09-14 14:01 ` [PATCH 0/3] allow zram to use zbud as underlying allocator Vlastimil Babka
2015-09-14 14:12 ` Vitaly Wool
2015-09-14 14:12 ` Vitaly Wool
2015-09-14 14:14 ` Vlastimil Babka
2015-09-14 14:14 ` Vlastimil Babka
2015-09-15 4:08 ` Dan Streetman
2015-09-15 4:08 ` Dan Streetman
2015-09-15 4:22 ` Sergey Senozhatsky
2015-09-15 4:22 ` Sergey Senozhatsky
2015-09-17 6:21 ` Vlastimil Babka
2015-09-17 6:21 ` Vlastimil Babka
2015-09-17 9:19 ` Sergey Senozhatsky
2015-09-17 9:19 ` Sergey Senozhatsky
2015-09-15 0:49 ` Sergey Senozhatsky
2015-09-15 0:49 ` Sergey Senozhatsky
2015-09-15 6:13 ` Minchan Kim
2015-09-15 6:13 ` Minchan Kim
2015-09-25 9:54 ` Vitaly Wool
2015-09-25 9:54 ` Vitaly Wool
2015-09-30 7:52 ` Minchan Kim
2015-09-30 7:52 ` Minchan Kim
2015-09-30 8:01 ` Vitaly Wool
2015-09-30 8:01 ` Vitaly Wool
2015-09-30 8:13 ` Minchan Kim
2015-09-30 8:13 ` Minchan Kim
2015-09-30 8:18 ` Vitaly Wool
2015-09-30 8:18 ` Vitaly Wool
2015-09-30 15:37 ` Vlastimil Babka
2015-09-30 15:37 ` Vlastimil Babka
2015-09-30 15:46 ` Vitaly Wool
2015-09-30 15:46 ` Vitaly Wool
2015-10-01 7:52 ` Vlastimil Babka
2015-10-01 7:52 ` Vlastimil Babka
2015-10-10 9:33 ` Vitaly Wool
2015-10-10 9:33 ` Vitaly Wool
2015-10-14 13:28 ` Vlastimil Babka
2015-10-14 13:28 ` Vlastimil Babka
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