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 :: Mailing Lists

[ILUG] iSCSI Woes

[ILUG] iSCSI Woes

AJ McKee aj.mckee at gmail.com
Thu Feb 8 22:34:45 GMT 2007


Mmmmm

The following seem to have improved data transfer performance by about 45%

$ ifconfig eth0 txqueuelen 1000
$ ethtool -K eth0 tso off

However load is still getting very high

AJ

On 2/8/07, AJ McKee <aj.mckee at gmail.com> wrote:
> Hi conor,
>
> Yea all is up to date. And just incase, I have another box running a
> previous version of the OES (Pre update) and its still the same.
>
> AJ
>
> On 2/8/07, Conor Wynne <conor at discuskeeping.com> wrote:
> > > A server on the normal kernel can use up to 16Gb without the
> > > hugemem kernel. The hugemem kernel lets individual processes
> > > use 4Gb of memory rather than the usual 3Gb. I am not too
> > > sure if this is necessary in this case. But I can give it a
> > > shot and see what the results are./
> >
> > This is correct, however, whenever the lowfree drops below 10MB, I
> > Have seen a great improvement in overall performance by changing the
> > kernel.
> >
> > I have never benchmarked iSCSI, have been planning to do some testing
> > for like, ages.
> > So it will be interesting to see what happens on yours.
> >
> > I assume all is up2date, iscsi, kernel etc.?
> >
> > Later dude, and let us know.
> >
> >
>



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