From: Andi Kleen <ak@muc.de>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: torvalds@osdl.org, linux-kernel@vger.kernel.org,
Andy Whitcroft <apw@shadowen.org>,
akpm@osdl.org
Subject: Re: [PATCH] Permit inode & dentry hash tables to be allocated > MAX_ORDER size
Date: Sat, 12 Jun 2004 02:21:28 +0200 [thread overview]
Message-ID: <m3d645fwxj.fsf@averell.firstfloor.org> (raw)
In-Reply-To: <263jX-5RZ-17@gated-at.bofh.it> (Martin J. Bligh's message of "Sat, 12 Jun 2004 01:10:09 +0200")
"Martin J. Bligh" <mbligh@aracnet.com> writes:
>
> Allocating the big-assed hashes out of bootmem seems much cleaner to me,
> at least ...
Machines big enough that such big hashes make sense are probably NUMA.
And on NUMA systems you imho should rather use node interleaving vmalloc(),
not a bit physical allocation on a specific node for these hashes.
This will avoid memory controller hot spots and avoid the problem completely.
Likely it will perform better too.
-Andi
next parent reply other threads:[~2004-06-12 0:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <263jX-5RZ-19@gated-at.bofh.it>
[not found] ` <262nZ-56Z-5@gated-at.bofh.it>
[not found] ` <263jX-5RZ-17@gated-at.bofh.it>
2004-06-12 0:21 ` Andi Kleen [this message]
2004-06-12 6:00 ` [PATCH] Permit inode & dentry hash tables to be allocated > MAX_ORDER size Martin J. Bligh
2004-06-12 7:36 ` Dave Hansen
2004-06-12 13:11 ` Andi Kleen
2004-06-12 15:00 ` Martin J. Bligh
2004-06-15 16:40 ` Dave Hansen
2004-06-11 10:44 David Howells
2004-06-11 10:48 ` Andrew Morton
2004-06-11 11:12 ` David Howells
2004-06-11 22:04 ` Andrew Morton
2004-06-11 23:03 ` Martin J. Bligh
2004-06-11 23:19 ` Andrew Morton
2004-06-11 23:18 ` Martin J. Bligh
2004-06-11 23:30 ` Andrew Morton
2004-06-12 12:45 ` Andy Whitcroft
2004-06-13 16:09 ` Linus Torvalds
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