Re: SMP 2.1.131: SCSI performance extremely poor vs. IDE

Pavel Machek (pavel@bug.ucw.cz)
Wed, 9 Dec 1998 21:32:02 +0100


Hi!

> The results are astounding:
>
> [ben@gilgamesh:/tmp]% time rm -rf mozilla 4:15PM
> rm -rf mozilla 0.13s user 0.93s system 18% cpu 5.581 total
>
> [ben@beowulf:/tmp]% time rm -rf mozilla 4:15PM
> rm -rf mozilla 0.17s user 1.51s system 98% cpu 1.712 total
>
> This is, frankly, terrible. Since when is IDE three times faster than
> ultra-wide SCSI?

You have to say how much memory does each machine have. This could do
_big_ difference. Also be sure to issue rm -rf in same situation in
both cases (ie just after untar). If machines have same ammount of
memory, then there's a problem. Somewhere.

Pavel

-- 
I'm really pavel@atrey.karlin.mff.cuni.cz. 	   Pavel
Look at http://atrey.karlin.mff.cuni.cz/~pavel/ ;-).

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