Yes, setting it too high can also increase CPU consumption. You should pick a value that reflects your working set of flows.
On Wed, Aug 21, 2013 at 6:16 PM, Jian Qiu <[email protected]> wrote: > 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> wrote: >> >> >> >> On Mon, Aug 19, 2013 at 4:45 PM, Jian Qiu <[email protected]> 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. >> > >> > > > _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
