[ovs-discuss] VMs lost network connections randomly

Jian Qiu swordqiu at gmail.com
Thu Aug 22 01:16:16 UTC 2013


Thanks Jesse! I will try to upgrade the userspace to 1.9.0, the current LTS
version.

With regard to flow-eviction-threshold, what is the recommended value? Is
there any side-effect if we increase the threshold to its maximal, say
65535?

Many thanks!

Jian


On Thu, Aug 22, 2013 at 4:52 AM, Jesse Gross <jesse at nicira.com> wrote:

> Depending on exact source of the problem, it may still be useful to
> update the userspace utilities and/or look at increasing the
> flow-eviction-threshold parameter.
>
> On Mon, Aug 19, 2013 at 8:03 PM, Jian Qiu <swordqiu at gmail.com> wrote:
> > Got it.
> >
> > If we stick to 1.4.6 kernel, is there any parameter we can tune to
> mitigate
> > the situation?
> >
> > Many thanks!
> >
> > Jian Qiu
> >
> >
> >
> > On Tue, Aug 20, 2013 at 9:00 AM, Jesse Gross <jesse at nicira.com> wrote:
> >>
> >> On Mon, Aug 19, 2013 at 4:45 PM, Jian Qiu <swordqiu at gmail.com> wrote:
> >> > Jesse,
> >> >
> >> > Thanks for your quick response.
> >> >
> >> > Which version would you recommend upgrade to? As you know, this is our
> >> > production environment, stability is the first priority.
> >> >
> >> > May I upgrade the userspace programs only? We might not be able to
> >> > upgrade
> >> > kernel module as replacing kernel module may require a server reboot
> and
> >> > we
> >> > couldn't stop the running service on it.
> >>
> >> There have been fairly continuous performance improvements in newer
> >> versions but by far the biggest jump is likely to be in the upcoming
> >> 1.11 release. However, this will require a kernel module update to get
> >> the full benefit.
> >
> >
>
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