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Article #1487Re: Speed of 3.0 relative to 2.X
From: Gerhard Moeller
Date: Wed, 30 Dec 1992 06:51
Date: Wed, 30 Dec 1992 06:51
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2087 bytes
In article <1992Dec29.111444.17399@jyu.fi> otto@jyu.fi (Otto J. Makela) writes:
> Quite some time ago, jim@ljkiraly.lerc.nasa.gov (L J "Jim" Kiraly) wrote...
> [re adding memory to get better speed]
> >Didn't need to yet! I changed the boot procedure to use 32 instead of 16
> >buffers and got a major speedup and overall improved performance. (e.g.
> >"CMD~"; during reboot; and then "bsd sdmach -nbuf=32" ) This seems to
> >remain set between restart/reboots although I haven't actually power cylced
> >things yet.
>
> I just upgraded to NS3.0, and tried this to see if I could pep it up a bit...
> I end up with "init exited" (as it did also with NS2.1), and it obviously
> doesn't boot.
>
> Monochrome NeXTstation with 32Mbytes of memory. Ideas, anyone?
1.) Go in the ROM-Monitor (read the Admin-Ref for how to do that)
2.) Change the bootparameter ("p")
sd- nbu=32 # or any other number, I use 96 (=0x60).
(With 32MB, I'd use 128 buffers...)
(This also works for numbers >99, nbuf=... does not.)
It will speed the I/O up, BUT (!) remember that you risk more when your machine
crashes!
Have fun, Gerhard.
--
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Newsgroups: comp.sys.next.software Path: arc1-ca.pugleaf.net!sparky!uunet!math.fu-berlin.de!uniol!proximus!gemoe From: gemoe@proximus.north.de (Gerhard Moeller) Subject: Re: Speed of 3.0 relative to 2.X Message-ID: <1992Dec30.065107.15274@proximus.north.de> Sender: gemoe@proximus.north.de Organization: Gerhard Moeller, German NeXT User Group, Oldenburg. References: <1992Dec29.111444.17399@jyu.fi> Date: Wed, 30 Dec 1992 06:51:07 GMT Lines: 32