Re: Intel P6 vs P7 system call performance

From: Dave Jones (davej@codemonkey.org.uk)
Date: Tue Dec 17 2002 - 14:47:08 EST

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On Tue, Dec 17, 2002 at 11:10:20AM -0800, Linus Torvalds wrote:
> Intel will fix the stupidities that cause the P4 to be slow at kernel
> entry. Somebody already mentioned that apparently the newer P4 cores are
> actually faster at system calls than mine is).

My HT Northwood returns slightly better results than your xeon,
but the syscall stuff still completely trounces it.

(19:38:46:davej@tetrachloride:davej)$ ./a.out
440.107164 cycles
1152.596084 cycles

Dave

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs
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