From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Matt Mackall <mpm@selenic.com>
Cc: Andrew Morton <akpm@osdl.org>,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] shrink core hashes on small systems
Date: Thu, 08 Apr 2004 08:53:48 +1000 [thread overview]
Message-ID: <1081378428.1401.71.camel@gaston> (raw)
In-Reply-To: <20040405211916.GH6248@waste.org>
> Yep. I can reword it in terms of pages, if that helps. Boxes with 8k
> pages tend to have larger instruction words and data structures by
> virtue of being RISC/64bit/etc., so I think 1000 pages is a reasonable
> number in either case.
No. For example, the embedded 4xx IBM CPUs can have several page sizes,
and a size like 16k could be useful for embedded applications: We don't
implement support for that in the ppc32 kernel yet, but we may do, it
makes a _lot_ of sense for small embedded configs with no swap, as it
reduces page tables size & pressure on the TLB software load handlers.
Ben.
prev parent reply other threads:[~2004-04-07 22:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-05 20:49 [PATCH] shrink core hashes on small systems Matt Mackall
2004-04-05 21:02 ` Andrew Morton
2004-04-05 21:19 ` Matt Mackall
2004-04-05 21:38 ` Andrew Morton
2004-04-05 22:59 ` Matt Mackall
2004-04-06 6:31 ` Bryan Rittmeyer
2004-04-07 5:21 ` Marcelo Tosatti
2004-04-07 18:10 ` Matt Mackall
2004-04-07 22:53 ` Benjamin Herrenschmidt [this message]
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