On Mon, 24 Sep 2001, Beau Kuiper wrote:
> Also, the performace problems seem to be very dependant on the hardware being
> used. 5400rpm drives get hurt a lot, while 7200 rpm drives seem to handle it
> better. Decent write caching on IDE devices (like the 2meg buffer on the IBM)
> can completely hide this issue.
Decent write caching on IDE devices can eat your whole file system.
Turn it off (I have no idea of internals, but I presume it'll still be a
write-through cache, so reading back will still be served from the
buffer). Do hdparm -W0 /dev/hd[a-h].
One might consider adding TCQ to the IDE driver. FreeBSD already has it,
and IBM drives talk it.
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This archive was generated by hypermail 2b29 : Sun Sep 30 2001 - 21:00:23 EST