Date: Wed, 24 Nov 2004 11:36:13 +0100 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Ivan Voras <ivoras@fer.hr> Cc: current@freebsd.org Subject: Re: gvinum panic? Message-ID: <20041124103613.GL7232@darkness.comp.waw.pl> In-Reply-To: <41A33907.5020703@fer.hr> References: <41A2488F.8030802@fer.hr> <20041122215228.J568@korben.in.tern> <41A33907.5020703@fer.hr>
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[-- Attachment #1 --] 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@FreeBSD.org http://garage.freebsd.pl FreeBSD committer Am I Evil? Yes, I Am! [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFBpGQdForvXbEpPzQRAuwBAJ9gvBOjIigq0vokvB0PLgkWOj1OvQCcDQTX F+iCmSAx8S9+97dlDt6bOFo= =4d+i -----END PGP SIGNATURE-----help
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