Re: PCI_LATENCY_TIMER

Edward Welbon (welbon@bga.com)
Wed, 30 Sep 1998 09:41:22 -0500 (CDT)


On Wed, 30 Sep 1998, Doug Ledford wrote:

> Sorry, clarification, at least one major and two minor *aic7xxx* revisions
> ago.

OK

> > I would prefer to play with the AAA-133
> > three port card.
>
> 3950U2B and a 64bit PCI bus would be much nicer :)

True but pragmatically, I have no machine with 64 bit PCI and I have
nine drives in a stripe and 3 SCSI channels (3 drives to a channel)
has been a useful confuguration excepting that it wastes two PCI slots,
so I would like to try the AAA-133, is it supportred?

> Depending on the kernel version and such, I can get some pretty nice
> performance figures:
> [root@dledford /mnt]# bonnie -s 256
> File './Bonnie.2021', size: 268435456
> Writing with putc()...done
> Rewriting...done
> Writing intelligently...done
> Reading with getc()...done
> Reading intelligently...done
> Seeker 1...Seeker 3...Seeker 2...start 'em...done...done...done...
> -------Sequential Output-------- ---Sequential Input--
> --Random--
> -Per Char- --Block--- -Rewrite-- -Per Char- --Block---
> --Seeks---
> Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec
> %CPU
> 256 11370 98.9 52781 95.8 16791 83.3 12767 89.5 32351 78.4 513.0
> 14.0

I trust that the memory size of the machine is much less than 256 MB,
if so, this is quite nice. How many and what kind of disks?

Ed Welbon welbon@spaminator.bga.com
ln -sf /dev/null cookies

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