From: Pavel Machek <pavel@suse.cz>
To: Sridhar Samudrala <sri@us.ibm.com>
Cc: Matthew Dobson <colpatch@us.ibm.com>, Paul Jackson <pj@sgi.com>,
clameter@engr.sgi.com, linux-kernel@vger.kernel.org,
andrea@suse.de, linux-mm@kvack.org
Subject: Re: [patch 3/9] mempool - Make mempools NUMA aware
Date: Sat, 28 Jan 2006 17:41:58 +0100 [thread overview]
Message-ID: <20060128164158.GD1858@elf.ucw.cz> (raw)
In-Reply-To: <43DB9877.7020206@us.ibm.com>
> >>I still think some sort of reserve pool
> >>is necessary to give the networking stack a little breathing room when
> >>under both memory pressure and network load.
> >>
> >
> >"Lets throw some memory there and hope it does some good?" Eek? What
> >about auditing/fixing the networking stack, instead?
> >
> The other reason we need a separate critical pool is to satifsy critical
> GFP_KERNEL allocations
> when we are in emergency. These are made in the send side and we cannot
> block/sleep.
If sending routines can work with constant ammount of memory, why use
kmalloc at all? Anyway I thought we were talking receiving side
earlier in the thread.
Ouch and wait a moment. You claim that GFP_KERNEL allocations can't
block/sleep? Of course they can, that's why they are GFP_KERNEL and
not GFP_ATOMIC.
Pavel
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next prev parent reply other threads:[~2006-01-28 16:41 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060125161321.647368000@localhost.localdomain>
2006-01-25 19:39 ` [patch 1/9] mempool - Add page allocator Matthew Dobson
2006-01-25 19:39 ` [patch 2/9] mempool - Use common mempool " Matthew Dobson
2006-01-25 19:40 ` [patch 4/9] mempool - Update mempool page allocator user Matthew Dobson
2006-01-25 19:40 ` [patch 5/9] mempool - Update kmalloc mempool users Matthew Dobson
2006-01-25 19:40 ` [patch 6/9] mempool - Update kzalloc " Matthew Dobson
2006-01-26 7:30 ` Pekka Enberg
2006-01-26 22:03 ` Matthew Dobson
2006-01-25 19:40 ` [patch 8/9] slab - Add *_mempool slab variants Matthew Dobson
2006-01-26 7:41 ` Pekka Enberg
2006-01-26 22:40 ` Matthew Dobson
2006-01-27 7:09 ` Pekka J Enberg
2006-01-27 7:10 ` Pekka J Enberg
2006-01-25 19:40 ` [patch 9/9] slab - Implement single mempool backing for slab allocator Matthew Dobson
2006-01-26 8:11 ` Pekka Enberg
2006-01-26 22:48 ` Matthew Dobson
2006-01-27 7:22 ` Pekka J Enberg
2006-01-25 23:51 ` [patch 1/9] mempool - Add page allocator Matthew Dobson
2006-01-25 23:51 ` [patch 3/9] mempool - Make mempools NUMA aware Matthew Dobson
2006-01-26 17:54 ` Christoph Lameter
2006-01-26 22:57 ` Matthew Dobson
2006-01-26 23:15 ` Christoph Lameter
2006-01-26 23:24 ` Matthew Dobson
2006-01-26 23:29 ` Christoph Lameter
2006-01-27 0:15 ` Matthew Dobson
2006-01-27 0:21 ` Christoph Lameter
2006-01-27 0:34 ` Matthew Dobson
2006-01-27 0:39 ` Christoph Lameter
2006-01-27 0:44 ` Matthew Dobson
2006-01-27 0:57 ` Christoph Lameter
2006-01-27 1:07 ` Andi Kleen
2006-01-27 10:51 ` Paul Jackson
2006-01-28 1:00 ` Matthew Dobson
2006-01-28 5:08 ` Paul Jackson
2006-01-28 8:16 ` Pavel Machek
2006-01-28 16:14 ` Sridhar Samudrala
2006-01-28 16:41 ` Pavel Machek [this message]
2006-01-28 16:53 ` Sridhar Samudrala
2006-01-28 22:59 ` Pavel Machek
2006-01-28 23:10 ` Let the flames begin... [was Re: [patch 3/9] mempool - Make mempools NUMA aware] Pavel Machek
2006-01-27 0:23 ` [patch 3/9] mempool - Make mempools NUMA aware Benjamin LaHaise
2006-01-27 0:35 ` Matthew Dobson
2006-01-27 3:23 ` Benjamin LaHaise
2006-01-28 1:08 ` Matthew Dobson
2006-01-25 23:51 ` [patch 7/9] mempool - Update other mempool users Matthew Dobson
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