On Wed, Jul 21, 2004 at 01:46:12AM +0200, jesk wrote: > hi, > i figured out that the performanceloss only really occur if the process is > heavily writing on the filesystem. > dd if=/dev/zero of=/dev/null bs=128k doesnt hurt much in responsetime > of parallel processes, but when dd operates on the filesystem with of=foo > every process will be affect in executiontime. > a simple ps or ls meanwhile dding onto the disk will be hang for dozen of > seconds. > > i tested it with 4BSD and ULE with and without Preemption. yep same thing here, it seems the process ( the "ps" one) doesn't get cputime or something strange. -db > > > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org"Received on Tue Jul 20 2004 - 21:56:44 UTC
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