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
> >>
> >
> > >
> >
>
>
> >
>

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