Re: Sparc has slow disk access
[From memory]
The E250 has a 53c860 scsi controller an the main board. It has a six
slot scsi backplane for sca disks.
Regards,
/Karl
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Karl Hammar Aspö Data karl@kalle.csb.ki.se
Lilla Aspö 2340 +46 173 140 57 Networks
S-742 94 Östhammar +46 10 270 26 67 Computers
Sweden Consulting
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From: Andrew Sharp <andy@netfall.com>
Subject: Re: Sparc has slow disk access
Date: Fri, 24 Aug 2001 15:03:03 -0700
> Anton Blanchard wrote:
> >
> >
> > > Try the solaris test again, Binkey, and this time use a filesystem
> > > other than /tmp for the output. Try setting up a ufs-log file
> > > system and see if the performance doesn't exceed that of linux.
> >
> > I would think that Solaris tmpfs was faster than their filesystems since
> > it wont hit disk unless memory pressure pushes things out to swap.
> >
> > btw last time I checked, Linux on ext2 beat Solaris on tmpfs at dbench (a
> > filesystem benchmark) by a large margin on a dual ultra 60.
>
> My point exactly: not only is tmpfs a notoriously slow filesystem to
> begin with, but in this case it almost surely had to go to disk,
> which is REALLY slow when it makes that switch. The logging UFS
> file system should be faster than ext2, but if the PC is using a
> udma100 setup and the e250 is using a scsi disk at 20MB/s, then the
> faster filesystem might not make any difference. I just don't
> remember what the default disk setup is on a 250, but I thought it
> was scsi. What flavor of scsi, I don't remember. And I misspelled
> Binky. Dang nab it.
>
> a
...
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