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Date: Wed, 3 May 2006 00:29:24 +0100
Subject: Re: [Qemu-devel] qemu/hw mips_r4k.c
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From: Thiemo Seufer <ths@networkno.de>
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To: qemu-devel@nongnu.org

Fabrice Bellard wrote:
> CVSROOT:	/sources/qemu
> Module name:	qemu
> Branch: 	
> Changes by:	Fabrice Bellard <bellard@savannah.gnu.org>	06/05/02 22:18:28
> 
> Modified files:
> 	hw             : mips_r4k.c 
> 
> Log message:
> 	performance boost (on P4 hosts at least, rdtsc is a _very_ bad random generator)
> 
> CVSWeb URLs:
> http://cvs.savannah.gnu.org/viewcvs/qemu/qemu/hw/mips_r4k.c.diff?tr1=1.15&tr2=1.16&r1=text&r2=text

Does this really provide a measurable performance improvement?
Real hardware simply increments cp0_random together with the cycle
counter, this is randomized enough for TLB entry replacement.


Thiemo