kelsey hudson wrote: > James G. Sack (jim) wrote: >.. > I've seen throughput increase 2-3 times, and system load decrease by an > appropriate number just by switching from software to hardware RAID. > This is equally funny, because the disks didn't change at all, nor did > the controller chips that were directly accessing them (I was using > Marvell SATA controllers on the host; turns out my RAID board of choice > also uses these internally). >.. > However, this isn't to completely discount software raid; it definitely > has its place. I just don't use it where extremely high performance > requirements are necessary. Often, my systems have better things to do > than service storage interrupts all day long and reorder IOs they don't > need to reorder. >
(lots snipped, above) Nice post, Kelsey. Points out that optimizations can have significant results in appropriate places. BTW, your outgoing email seems to gotten stuck for ~2.5 days in nemesis.damnit.us? What causes that sort of thing? Or, were you offline, maybe? Regards, ..jim -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
