Date: Tue, 23 Nov 2004 14:20:07 +0100 From: Ivan Voras <ivoras@fer.hr> To: current@freebsd.org Subject: Re: gvinum panic? Message-ID: <41A33907.5020703@fer.hr> In-Reply-To: <20041122215228.J568@korben.in.tern> References: <41A2488F.8030802@fer.hr> <20041122215228.J568@korben.in.tern>
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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 with raid5, gvinum or vinum, I get these: linear read (1024 MB file, blocks of 32768) ................. 27.8 MB/s linear write (1024 MB file, blocks of 32768) ................ 4.2 MB/s random read (1024 MB file, blocks of 32768) ................. 44.2 MB/s random write (1024 MB file, blocks of 32768) ................ 1.9 MB/s (random reads are really random, no clustering or anything). My setup is 2 IDE channels with three discs, so one is a slave (and contains the parity disc in case of raid3). Do these numbers make sense? I'll certainly go with raid3 as it is...home | help
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