I built a Vivid test kernel with the requested commit. There were some pre-req commits that were needed as well. The test kernel has the following commits applied:
4c0d9e0 hv_netvsc: Use the xmit_more skb flag to optimize signaling the host 2e16490 Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl() b30dd3a Drivers: hv: vmbus: Suport an API to send pagebuffers with additional control f93ca43 Drivers: hv: vmbus: Suport an API to send packet with additional control 068352e hv_netvsc: Fix a bug in netvsc_start_xmit() be93771 hv_netvsc: Implement partial copy into send buffer 888ec2b hv_netvsc: Fix the packet free when it is in skb headroom a0d749b hv_netvsc: Eliminate memory allocation in the packet send path ef9700b hv_netvsc: Cleanup the test for freeing skb when we use sendbuf mechanism 929b8e8 hv_netvsc: Implement batching in send buffer The Vivid test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1454892/ Can you test this kernel and see if it resolves the bug? If it does, I'll build test kernels for all the other supported releases as well. Thanks in advance! -- 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/1454892 Title: [Hyper-V] hv_netvsc: Use the xmit_more skb flag to optimize signaling the host Status in linux package in Ubuntu: Triaged Status in linux source package in Precise: Triaged Status in linux source package in Trusty: Triaged Status in linux source package in Utopic: Triaged Status in linux source package in Vivid: Triaged Status in linux source package in Wily: Triaged Bug description: hv_netvsc: Use the xmit_more skb flag to optimize signaling the host Based on the information given to this driver (via the xmit_more skb flag), we can defer signaling the host if more packets are on the way. This will help make the host more efficient since it can potentially process a larger batch of packets. Implement this optimization. Upstream commit: https://git.kernel.org/cgit/linux/kernel/git/davem /net-next.git/commit/?id=82fa3c776e5abba7ed6e4b4f4983d14731c37d6a This commit may imply other commits previously requested, for example https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1452074 Requested for all typical Hyper-V targets: 15.10, 15.04, 14.10, 14.04, 14.04 HWE, 12.02, and 12.02 HWE To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1454892/+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
