Patch applied to Zesty and submitted to the k-team list for Yakkety -- 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/1670247
Title: Ubuntu 16.10: Network checksum fixes needed for IPoIB for Mellanox CX4/CX5 card Status in linux package in Ubuntu: Fix Released Status in linux source package in Yakkety: In Progress Status in linux source package in Zesty: Fix Released Bug description: == Comment: #0 - Carol L. Soto <cls...@us.ibm.com> - 2017-03-03 22:23:11 == ---Problem Description--- Mellanox CX4/CX5 IB if running IPoIB in connected mode, it does not have the hw checksum so when running IPoIB in power system the performance is low. with iperf and 4 threads we get [ 8] local 44.44.44.44 port 5001 connected with 44.44.44.45 port 48536 [ 4] local 44.44.44.44 port 5001 connected with 44.44.44.45 port 48538 [ 5] local 44.44.44.44 port 5001 connected with 44.44.44.45 port 48540 [ 6] local 44.44.44.44 port 5001 connected with 44.44.44.45 port 48542 [ 8] 0.0-10.0 sec 9.07 GBytes 7.79 Gbits/sec [ 4] 0.0-10.0 sec 9.16 GBytes 7.87 Gbits/sec [ 5] 0.0-10.0 sec 9.13 GBytes 7.84 Gbits/sec [ 6] 0.0-10.0 sec 9.18 GBytes 7.88 Gbits/sec [SUM] 0.0-10.0 sec 36.5 GBytes 31.4 Gbits/sec if we add the following patches: From 68201fbbb04a030864f8560b05d43d8019f7f8df Mon Sep 17 00:00:00 2001 From: Michael Ellerman <m...@ellerman.id.au> Date: Thu, 11 Aug 2016 16:03:14 +1000 Subject: powerpc/Makefile: Drop CONFIG_WORD_SIZE for BITS From b492f7e4e07a28e706db26cf4943bb0911435426 Mon Sep 17 00:00:00 2001 From: Paul Mackerras <pau...@ozlabs.org> Date: Thu, 3 Nov 2016 16:10:55 +1100 Subject: powerpc/64: Fix checksum folding in csum_tcpudp_nofold and ip_fast_csum_nofold From d4fde568a34a93897dfb9ae64cfe9dda9d5c908c Mon Sep 17 00:00:00 2001 From: Paul Mackerras <pau...@ozlabs.org> Date: Thu, 3 Nov 2016 16:15:42 +1100 Subject: powerpc/64: Use optimized checksum routines on little-endian then I can get with iperf [ ID] Interval Transfer Bandwidth [ 4] 0.0-10.0 sec 23.0 GBytes 19.7 Gbits/sec [ 6] 0.0-10.0 sec 22.9 GBytes 19.7 Gbits/sec [ 5] 0.0-10.0 sec 22.9 GBytes 19.7 Gbits/sec [ 7] 0.0-10.0 sec 22.9 GBytes 19.6 Gbits/sec [SUM] 0.0-10.0 sec 91.7 GBytes 78.7 Gbits/sec Contact Information = Carol Soto/cls...@us.ibm.com ---uname output--- 4.8.0-34-generic #36-Ubuntu SMP Wed Dec 21 17:22:53 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux ---Additional Hardware Info--- Need a power system and Mellanox CX4 IB card. Machine Type = P8 ---Steps to Reproduce--- just run iperf with IPoIB in connected mode and will see aroung 30Gbits/sec. If we add the patches then we can get more than 70Gbits/sec. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670247/+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
