From: Andi Kleen <andi@firstfloor.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andi Kleen <andi@firstfloor.org>, Dave Jones <davej@redhat.com>,
x86@kernel.org, Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Update cacheline size on X86_GENERIC
Date: Sat, 11 Oct 2008 16:01:19 +0200 [thread overview]
Message-ID: <20081011140119.GC12131@one.firstfloor.org> (raw)
In-Reply-To: <200810120048.31141.nickpiggin@yahoo.com.au>
> No immediate ideas. Jens probably is a good person to cc. With direct IO
> workloads, hd_struct should mostly only be touched in partition remapping
> and IO accounting.
I found it doubtful if grouping the rw and ro members together was a good
idea.
> At this point, you would want to cacheline align hd_struct. So if you
The problem is probably not false sharing, but simply cache misses because it's
so big. I think.
-Andi
--
ak@linux.intel.com
next prev parent reply other threads:[~2008-10-11 13:55 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-09 17:14 Update cacheline size on X86_GENERIC Dave Jones
2008-10-10 3:28 ` Nick Piggin
2008-10-10 7:46 ` Andi Kleen
2008-10-10 8:45 ` Nick Piggin
2008-10-10 10:22 ` Andi Kleen
2008-10-11 3:59 ` Nick Piggin
2008-10-11 8:08 ` Andi Kleen
2008-10-11 8:29 ` Nick Piggin
2008-10-11 11:22 ` Andi Kleen
2008-10-11 11:27 ` Rafael J. Wysocki
2008-10-11 11:42 ` Nick Piggin
2008-10-11 13:11 ` Andi Kleen
2008-10-11 13:48 ` Nick Piggin
2008-10-11 14:01 ` Andi Kleen [this message]
2008-10-12 5:56 ` Nick Piggin
2008-10-10 18:26 ` H. Peter Anvin
2008-10-11 3:56 ` Nick Piggin
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