> > dd if=/dev/zero of=/home/1 bs=1024k &
which is the moral equivalent to a fork-bomb: it generates an overwhelming
stream of requests to the same region of disk.
> It's probably a problem with the elevator sorting in
> ll_rw_blk. I'm thinking this because the exact same
> test doesn't give any performance hit at all on my
> SCSI system...
I think it's merely a fairness issue with allocating request blocks;
elevator sorting should be fine, since it's c-scan. this isn't an issue
for scsi because we punt all scheduling to the disk (not always a win...)
regards, mark hahn.
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This archive was generated by hypermail 2b29 : Mon Feb 07 2000 - 21:00:13 EST