I did a test, copied a 3gb file from my 3ware -> iscsi, 90MB/s, top is showing 20% idle, 77% on Midnight commander copying the file and 3% on the scsi_wq... strange... can MC use that much cpu to copy the file? Is there anything i can do minimize this?
On Dec 7, 2007 1:19 AM, Mike Christie <[EMAIL PROTECTED]> wrote: > > Thanks for the info and review. > > Dragmore wrote: > > PS2! What i do notice is that in 10.1 when copying files back and forth > from > > the iscsi box didnt demand that much cpu.. but now on 10.3 and on 10.2im > > getting 90-100% usage when doing stuff against the iscsi box...It could > be > > the default parameters on the e1000 drivers.. No idea... hints welcome > ;) > > > > Try just doing top and checking if you see the cpu dominated by > scsi_wq_N where N is the host number of the scsi_host that the iscsi > session is attached to (you can get that from running "iscsiadm -m > session -P 3"). > > > thats what my tired brain could belch up late this night > > > > :) > > > br > > TE > > > > > > > > > > On Dec 6, 2007 10:11 PM, Mike Christie <[EMAIL PROTECTED]> wrote: > > > >> Mike Christie wrote: > >>> TECB wrote: > >>>> Last update ;) > >>>> 2.6.23-9 did the trick.. I was able to mount, umount and repair the > >>>> FS. > >>>> Open-iscsi worked fine and the performance is roughly 90-110MB/s on > >>>> read with blockdev -setra 16384, and rougly the same on write.. > >>>> Im not getting the stellar 110-123MB/s i had on the 765 builds i had > a > >>>> year ago.. but its better than 40-60mb/s. > >>>> So the conclusion is; Suse 10.3, Large XFS volume on iscsi = bombs on > >>>> the default kernel. > >>> So could you help sum this up so we can fix this? > >>> > >>> 2.6.23-9's iscsi modules with userspace tools from 865-15 worked and > had > >> Oh yeah is that kernel.org 2.6.23-9 or some SUSE 2.6.23-9? > >> > >> Thanks > >> > > > > > > > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to email@example.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/open-iscsi -~----------~----~----~----~------~----~------~--~---