Re: Very slow IDE performance

Kurt Garloff (garloff@suse.de)
Mon, 23 Aug 1999 14:36:25 +0200


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On Mon, Aug 23, 1999 at 03:17:00AM -0400, Mike A. Harris wrote:
> Sounds like the internal or external CPU cache is disabled, or
> both are disabled. I have a 486-DX2-66 here, and it scores 33.18
> bogos. I would guess a P120 would be higher than 56 bogos...

No. The old Pentium needed about 2.5 cycles per bogomips loop. It exposed a
bug in the branch prediction logic, BTW. Pentium w/ MMX fixed it, IIRC.

For a P120, I'd expect 46 bogos, with a P133 I found 53.

Regards,
--=20
Kurt Garloff <garloff@suse.de> Wuppertal, FRG
PGP2 key: See mail header, key servers Linux kernel development
SuSE GmbH, N=FCrnberg, FRG SCSI drivers: tmscsim(DC390), DC395

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