------- Comment From jhop...@us.ibm.com 2017-08-10 10:41 EDT------- Aneesh has additional Radix performance fixes (3 more total):
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=424de9c6e3f89399fc11afc1f53f89c5329132da ("powerpc/mm/radix: Avoid flushing the PWC on every flush_tlb_range") . https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=a46cc7a90fd8d95bfbb2b27080efe872a1a51db4 ("powerpc/mm/radix: Improve TLB/PWC flushes") . https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=5ce5fe14ed0302315061cf97ce67accd1b25b938 ("powerpc/mm/radix: Improve _tlbiel_pid to be usable for PWC flushes") (upstream, currently scheduled for 4.14) Can these be included in Zesty as well? FYI the first set of 3 patches mentioned in the orig bug report helps anywhere from 40% up to 3.5X on unixbench fork/exec testcases. I will post updated numbers for this second set of 3 fixes soon. -- 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/1709220 Title: RPT related fixes missing in Ubuntu 16.04.3 Status in The Ubuntu-power-systems project: New Status in linux package in Ubuntu: New Bug description: ---Problem Description--- The following patches are missing in the ubuntu 16.04.3 kernel https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/156104.html https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/156105.html https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-April/157130.html ---uname output--- 4.10.0-29-generic #33~16.04.1-Ubuntu SMP Tue Jul 25 18:17:06 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux Machine Type = power9 ---Steps to Reproduce--- Did a fork and exec benchmark to look at the performance and they pointed to radix routines. Upstream commits mentioned: commit f7327e0ba3805470cced2acfa053e795362ee41d powerpc/mm/radix: Remove unnecessary ptesync commit f6b0df55cad252fedd60aa2ba75a0207d0006283 powerpc/mm/radix: Don't do page walk cache flush when doing full mm flush commit a5998fcb92552a18713b6aa5c146aa400e4d75ee powerpc/mm/radix: Optimise tlbiel flush all case To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1709220/+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
