Re: [PATCH] 2/2 2.5.45 cleanup & add original copy_ro/from_user
Andi Kleen (ak@suse.de)
Sat, 2 Nov 2002 13:23:12 +0100
> 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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