On Tue, Nov 23, 2004 at 02:20:07PM +0100, Ivan Voras wrote: +> Lukas Ertl wrote: +> >On Mon, 22 Nov 2004, Ivan Voras wrote: +> > +> >>I'm consistently getting a system panic, trap #12 in process g_event +> >>when I try: +> > +> > +> >Are you sure that kernel (modules) and userland are in sync? +> +> Thanks, it looks like they've been unsynced for a while :( +> It's ok now. +> +> But, the performance is pretty bad (same with regular vinum). I tried +> setting up graid3 class with same parameters, and got these results: +> +> linear read (1024 MB file, blocks of 32768) ................. 38.5 MB/s +> linear write (1024 MB file, blocks of 32768) ................ 16.8 MB/s +> random read (1024 MB file, blocks of 32768) ................. 41.9 MB/s +> random write (1024 MB file, blocks of 32768) ................ 3.4 MB/s Do you use parity component for reading? If no, you can try it (add '-r' option while configuring your raid3 device), it should speed up random reads a lot. -- Pawel Jakub Dawidek http://www.FreeBSD.org pjd_at_FreeBSD.org http://garage.freebsd.pl FreeBSD committer Am I Evil? Yes, I Am!
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