Maxtor disks & DEC5000
Greg Pavlov
pavlov at canisius.UUCP
Sun Oct 14 14:58:44 AEST 1990
In article <1990Oct11.211023.2207 at decuac.dec.com>, mjr at hussar.dco.dec.com (Marcus J. Ranum) writes:
> Depending on the way you anticipate using your system, you might
> want to increase the size of your buffer cache, and change the write
> scheduling policy to delay scheduling dirty buffers for write.....
>
What is the downside of this ? Am I taking a bigger chance on ending up
with a corrupted database, for instance ? What are potential performance
downsides ?
> I haven't tried tuning the rotational delay of Maxtors - you might want to
> play with that some, too.
I have played with the tunefs parameters many times - particularly rotat-
ional delay. I have noticed that I do not see any difference (well, no
more than 2-5% ) regardless of what I set them to and on what type/brand of
disk (RA70's, RA90's, RDnn's, Fuji M2333k, various CDC and HP).
- this has been the case ever since DEC introduced it's "own" filesystem -
back at ULTRIX 2 (?). Am I missing something ? (yes, I dismount the rele-
vant partititon...).
greg pavlov, fstrf, amherst, ny
pavlov at stewart.fstrf.org
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