On Sat, 18 Mar 2006 at 1:55pm, Michael Tokarev wrote
We've installed an LSI Logic MegaRaid SCSI 320-1 card on our server (used only temporarily to move data to larger disks, but that's not the point), and measured linear write performance, just to know how much time it will took to copy our (somewhat large) data to the new array. And to my surprize, this card, with current firmware, current (2.6.15) kernel and modern disks is terrible slow on writing - writing speed varies between 1.5 megabutes/sec to 10 megabytes/sec, depending on the logical drive settings in the megaraid adapter.
I've got the same card in a server running CentOS 4.2. With default settings on the card and the OS, I'm getting 45MB/s reads and 22MB/s writes according to bonnie++ to a 2 disk raid1 mirror. I'll certainly try to get better, but it's not nearly as bad as yours.
-- Joshua Baker-LePain Department of Biomedical Engineering Duke University - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
