> check the raw performance of one drive involved > with hdparm -tT ... Did that, it reported between 27-45MB/s on all drives (ranging from the system harddrive to the LVM harddrives) > > After scouring the net for suggestions on how to improve the speed, I came > > up empty, and thus, I'm writing this email :) > > > > Some more facts (more available if needed ;)) about the server: > > > > All drives are tuned with 32bit transfers and DMA enabled. I'm running > > kernel 2.4.22pre2 (gentoo). > > just for the fun of doing it, compile vanilla > 2.4.22 and give it a try ... you could also add Oki, will try it as soon as I get home. > the following lvm patch ... > http://www.13thfloor.at/VServer/patches-2.4.22-p10c17/07_lvm-1.0.7-2.4.21pre5.patch.bz2 Hmm? What does this patch do? > was the performance you had on your old box higher? > or did you just expect an increase in speed, which didn't > happen? Performance on my old box was lower, so I expected it to increase with my new system. And it did, as long as I don't serve any files from the volumeset, everything runs just fine (9.5MB/s) but whenever I try to access files on the LV, I get 4-5MB/s ... Even tried doing: time cat "somefile on the LV set" > /dev/null Which performed equally bad (ie, about 4-5MB/s). Doing the same on the /dev/hda1 drive gives ALOT better performance (more in the line of what hdparm -Tt reports) /Henric _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
