>> Actually. SMB never gives optimal transfer speeds. On a HUB you >> can expect not much more than 6-7MB/S on a 100mbit connection. >> With a Switch you can get higher, up to 12.5MB/s over FTP (but >> never with SMB due to protocol overhead etc). > yeah, I thought it was smb at first aswell, but I get the exact > same speed over ftp. And rm'ing a file (on ssh to the server) and > playing a mp3 at the same time shouldn't make the mp3 skip 1-3 > seconds should it? No, that is true. Your low read speed does indicate that you are not using DMA. Give us the output of "hdparm /dev/hda". Also a simple benchmark is to do "dd_rescue /dev/hda /dev/null". What does that give you in numbers? > And I've had a stable 11mb/sec out of smb before (tweaked). >> Also there is this tool called elvtune. It allowes you to "tune the I/O >> elevator per blockdevice queue basis". See the man pages. >> >> You could try to lower the read latency for the affected devices (/dev/hda, >> /dev/hdb, etc.) > elvtune shows read_latency of 2048 and write_latency of 8192, > that's already quite low isn't it? If not, have any example values > I can test with? > cat .config | grep -i tcq shows > # CONFIG_BLK_DEV_IDE_TCQ is not set > should I manually set it and compile? It's not in make_config. You can try. Though I suspect you will not gain much speed. > also does anyone have a lvmcreate_initrd script for lvm2? > just did a bonnie++ test on the lvm volume. Seems VERY slow doesen't it. > Version 1.03 ------Sequential Output------ --Sequential Input- --Random- > -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP > hollowtube 1G 3787 93 26948 62 10841 14 5885 90 21274 17 175.3 1 > ------Sequential Create------ --------Random Create-------- > -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- > files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP > 16 4991 98 +++++ +++ 4135 90 4613 91 +++++ +++ 3912 89 > hollowtube,1G,3787,93,26948,62,10841,14,5885,90,21274,17,175.3,1,16,4991,98,+++++,+++,4135,90,4613,91,+++++,+++,3912,89 _______________________________________________ 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/
