From: Andi Kleen <ak@suse.de>
To: Matthew Wilcox <matthew@wil.cx>
Cc: mkp@wildopensource.com, linux-kernel@vger.kernel.org,
linux-ia64@vger.kernel.org, akpm@osdl.org, tony.luck@intel.com
Subject: Re: [PATCH] General purpose zeroed page slab
Date: Mon, 18 Oct 2004 19:06:51 +0000 [thread overview]
Message-ID: <20041018210651.66c3ab44.ak@suse.de> (raw)
In-Reply-To: <20041018184210.GI16153@parcelfarce.linux.theplanet.co.uk>
On Mon, 18 Oct 2004 19:42:10 +0100
Matthew Wilcox <matthew@wil.cx> wrote:
> I disagree with Andi over the dumbness
> of zeroing the whole page. That makes it cache-hot, which is what you
> want from a page you allocate from slab.
Not for a page table, which tends to be not fully used.
It would be true for a user page, but that doesn't use this mechanism anyways.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Matthew Wilcox <matthew@wil.cx>
Cc: mkp@wildopensource.com, linux-kernel@vger.kernel.org,
linux-ia64@vger.kernel.org, akpm@osdl.org, tony.luck@intel.com
Subject: Re: [PATCH] General purpose zeroed page slab
Date: Mon, 18 Oct 2004 21:06:51 +0200 [thread overview]
Message-ID: <20041018210651.66c3ab44.ak@suse.de> (raw)
In-Reply-To: <20041018184210.GI16153@parcelfarce.linux.theplanet.co.uk>
On Mon, 18 Oct 2004 19:42:10 +0100
Matthew Wilcox <matthew@wil.cx> wrote:
> I disagree with Andi over the dumbness
> of zeroing the whole page. That makes it cache-hot, which is what you
> want from a page you allocate from slab.
Not for a page table, which tends to be not fully used.
It would be true for a user page, but that doesn't use this mechanism anyways.
-Andi
next prev parent reply other threads:[~2004-10-18 19:06 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-14 16:50 [PATCH] General purpose zeroed page slab Martin K. Petersen
2004-10-14 16:50 ` Martin K. Petersen
2004-10-14 17:30 ` Brian Gerst
2004-10-14 17:30 ` Brian Gerst
2004-10-14 17:36 ` Matthew Wilcox
2004-10-14 17:36 ` Matthew Wilcox
2004-10-14 18:49 ` Dave Jones
2004-10-14 18:49 ` Dave Jones
2004-10-14 19:08 ` Denis Vlasenko
2004-10-14 19:08 ` Denis Vlasenko
2004-10-14 19:47 ` Matthew Wilcox
2004-10-14 19:47 ` Matthew Wilcox
2004-10-14 18:04 ` Andi Kleen
2004-10-14 18:04 ` Andi Kleen
2004-10-14 23:36 ` Adam Heath
2004-10-14 23:36 ` Adam Heath
2004-10-15 1:18 ` Andi Kleen
2004-10-15 1:18 ` Andi Kleen
2004-10-18 18:06 ` Martin K. Petersen
2004-10-18 18:06 ` Martin K. Petersen
2004-10-18 18:42 ` Matthew Wilcox
2004-10-18 18:42 ` Matthew Wilcox
2004-10-18 18:54 ` Martin K. Petersen
2004-10-18 18:54 ` Martin K. Petersen
2004-10-18 19:06 ` Andi Kleen [this message]
2004-10-18 19:06 ` Andi Kleen
2004-10-18 21:06 ` Andi Kleen
2004-10-18 21:06 ` Andi Kleen
2004-10-18 19:03 ` Luck, Tony
2004-10-18 19:03 ` Luck, Tony
2004-10-18 19:14 ` Matthew Wilcox
2004-10-18 19:14 ` Matthew Wilcox
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