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Date: Sat, 2 Nov 2002 13:23:12 +0100
From: Andi Kleen <ak@suse.de>
To: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
Cc: Andi Kleen <ak@suse.de>, Andrew Morton <akpm@digeo.com>,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH] 2/2 2.5.45 cleanup & add original copy_ro/from_user
Message-ID: <20021102132312.A563@wotan.suse.de>
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> It's easy to time memcpy() but harder to measure susequent
> cache misses when copied data gets accessed. We can read it
> back after memcpy and measure memcpy()+read, but is entire
> copy gets used immediately after memcpy() in real world usage?
> We're in benchmarking hell :(

You test common operations, like pipe bandwidth or ioctls.

-Andi
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