------- Comment From jhop...@us.ibm.com 2016-06-30 10:07 EDT------- I was able to verify the proposed (host) kernel improves guest performance with some uperf testing. Thanks!
For example: single VM to VM; TCP_RR - 1 byte, 4 instances stable kernel (4.4.0-28): 655.32Kb/s 607.45Kb/s proposed kernel (4.4.0-29): 702.77Kb/s 712.68Kb/s Although I am curious, I tried to look at the source: apt-get install linux-source/xenial-proposed I don?t see this patch in that source, but maybe that is expected since its only shown as ?4.4.0?? /usr/src/linux-source-4.4.0.tar.bz2 ** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1592809 Title: Restore irqfd fast path for PPC Status in linux package in Ubuntu: Fix Released Status in linux source package in Xenial: Fix Committed Status in linux source package in Yakkety: Fix Released Bug description: Dear Canonical, A patch is now upstream to restore the irqfd fast path for Power, can this be pulled into a 16.04.1? It was found to significantly help guest small msg rate networking performance by ~30%. Commit id: b1a4286b8f3393857a205ec89607683161b75f90 KVM: PPC: Book3S HV: Re-enable XICS fast path for irqfd-generated interrupts To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1592809/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
