From: Paul Jakma (Paul.Jakma at domain Digital.com)
Date: Wed 19 May 1999 - 10:41:49 IST
> yes, the figures are a bit high. Vincent pointed that out and got me
> thinking of pci bus speeds, and 47MB/sec is impossible.
> The machine is a app/fileserver so the software buffering comes in.
which version of hdparm do you have? older versions don't do more than test
For a real filesystem benchmark try bonnie, it's on sunsite/metalab. And use
a file size at least 2x memory. The best I've seen with bonnie is 16MB/s
sustained with a Seagate Cheetah 10k uw scsi disk.
> The dma setting didn't change much.
> > Note that these will reset to the original 0 settings if
> > the ide driver resets the IDE bus, unless you do hdparm -k 1
> > to keep settings across resets.
> have done already.
-u is important aswell, or else the ide driver will block other interrupts,
esp critical if you use a modem - you can lose stuff from the serial port
buffer if there's lot's of ide activity.
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