From: Andi Kleen <ak@suse.de>
To: Eric dumazet <abuse@cosmosbay.com>
Cc: netdev@vger.kernel.org, netfilter-devel@lists.netfilter.org
Subject: Re: [PATCH, netfilter] NUMA aware ipv4/netfilter/ip_tables.c
Date: Mon, 19 Sep 2005 19:48:54 +0200 [thread overview]
Message-ID: <200509191948.55333.ak@suse.de> (raw)
In-Reply-To: <432EF0C5.5090908@cosmosbay.com>
On Monday 19 September 2005 19:09, Eric dumazet wrote:
> Hi
>
> Part of the performance problem we have with netfilter is memory
> allocation is not NUMA aware, but 'only' SMP aware.
How do you know? Did you measure it somehow?
Normally I would expect fire wall state to mostly fit
into caches (1MB+) of modern Opterons and other NUMA systems.
> What do you think of this patch ?
>
> Note : The allocation function is quite complex (copied from
> drivers/pci/pci-driver.c pci_call_probe())
> because current kernel doesnt have a NUMA aware vmalloc() wrapper
Normal vmalloc is NUMA aware and allocates on the local node.
Like all memory allocations
> , maybe
> a future kernel will export
> such a common function ?
BTW if you want to put data onto a specific node you don't need
to schedule there - it is enough to set the process mempolicy
with sys_set_mempolicy. This is fine from kernel too, as long
as you save/restore the old one (current->mempolicy)
-Andi
>
next prev parent reply other threads:[~2005-09-19 17:48 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-19 17:09 [PATCH, netfilter] NUMA aware ipv4/netfilter/ip_tables.c Eric dumazet
2005-09-19 17:20 ` Eric Dumazet
2005-09-19 17:48 ` Andi Kleen [this message]
2005-09-19 19:09 ` Eric Dumazet
2005-09-20 9:47 ` Eric Dumazet
2005-09-20 16:30 ` Andi Kleen
2005-09-20 17:02 ` Eric Dumazet
2005-09-20 21:45 ` [PATCH] Adds sys_set_mempolicy() in include/linux/syscalls.h , " Eric Dumazet
2005-09-20 21:45 ` Eric Dumazet
2005-09-20 21:46 ` [PATCH] Adds sys_set_mempolicy() in include/linux/syscalls.h Eric Dumazet
2005-09-21 21:24 ` [PATCH 0/3] netfilter : 3 patches to boost ip_tables performance Eric Dumazet
2005-09-21 22:43 ` Christoph Lameter
2005-09-22 0:34 ` David S. Miller
2005-09-22 0:34 ` David S. Miller
2005-09-22 1:44 ` Christoph Lameter
2005-09-22 12:11 ` Eric Dumazet
2005-09-22 12:11 ` Eric Dumazet
2005-09-22 12:49 ` Christoph Hellwig
2005-09-22 12:54 ` Andi Kleen
2005-09-22 12:58 ` Christoph Hellwig
2005-09-22 13:05 ` Andi Kleen
2005-09-22 15:37 ` Christoph Lameter
2005-09-22 15:50 ` Eric Dumazet
2005-09-22 15:50 ` Eric Dumazet
2005-09-22 15:55 ` Christoph Lameter
2005-09-23 17:11 ` Harald Welte
2005-09-23 17:44 ` Christoph Lameter
2005-09-23 18:04 ` Dave Hansen
2005-09-26 17:58 ` vmalloc_node Christoph Lameter
2005-09-26 18:10 ` vmalloc_node Dave Hansen
2005-09-23 17:47 ` [PATCH 0/3] netfilter : 3 patches to boost ip_tables performance Eric Dumazet
2005-09-23 18:00 ` Kyle Moffett
2005-09-22 4:18 ` James Morris
2005-09-22 4:18 ` James Morris
2005-09-22 5:07 ` Eric Dumazet
2005-09-22 13:03 ` Andi Kleen
2005-09-22 13:30 ` Eric Dumazet
2005-09-23 17:09 ` Harald Welte
2005-09-27 16:23 ` Andi Kleen
2005-09-28 0:25 ` Henrik Nordstrom
2005-09-28 8:32 ` Harald Welte
2005-09-28 8:32 ` Harald Welte
2005-09-28 8:37 ` Andi Kleen
2005-09-28 8:37 ` Andi Kleen
2005-10-04 17:01 ` Patrick McHardy
2005-10-05 16:53 ` Andi Kleen
2005-10-07 2:38 ` Harald Welte
2005-10-06 17:59 ` Andi Kleen
2005-10-07 17:08 ` Patrick McHardy
2005-10-07 17:21 ` Andi Kleen
2005-10-07 17:50 ` Patrick McHardy
2005-09-28 10:34 ` Henrik Nordstrom
2005-09-28 10:34 ` Henrik Nordstrom
2005-11-25 11:23 ` [PATCH] netfilter : zap get_cpu()/put_cpu() calls from ip_tables Eric Dumazet
2005-11-25 11:28 ` [PATCH (resent with the attachment !)] " Eric Dumazet
2005-11-25 18:20 ` Patrick McHardy
2005-09-21 21:29 ` [PATCH 1/3] netfilter : 3 patches to boost ip_tables performance Eric Dumazet
2005-09-22 12:57 ` Harald Welte
2005-09-22 12:57 ` Harald Welte
2005-09-22 13:17 ` Eric Dumazet
2005-09-22 13:17 ` Eric Dumazet
2005-09-21 21:32 ` [PATCH 2/3] " Eric Dumazet
2005-09-22 12:48 ` Harald Welte
2005-09-22 12:48 ` Harald Welte
2005-09-22 13:05 ` Eric Dumazet
2005-09-23 4:02 ` Willy Tarreau
2005-09-23 5:14 ` Eric Dumazet
2005-09-23 11:33 ` Willy Tarreau
2005-09-23 14:00 ` Tim Mattox
2005-09-21 21:37 ` [PATCH 3/3] " Eric Dumazet
2005-09-22 12:50 ` Harald Welte
2005-09-22 12:50 ` Harald Welte
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