------- Comment From jhop...@us.ibm.com 2017-08-15 12:06 EDT------- Thanks! Seeing good improvements with this build based on some unixbench microbenchmarks:
baseline = 4.10.0-32-generic RPT fixes = 4.10.0-32.36~lp1709220 Unixbench baseline RPT fixes improvement SMToff SMT4 SMToff SMT4 SMToff SMT4 Execl ? single 656.2 963.0 1583.0 1507.1 141.2% 56.5% Execl ? multi 2522.9 6527.3 4720.2 11766.7 87.1% 80.3% Sysexec ? single 487.2 715.5 787.0 1082.2 61.5% 51.3% Sysexec ? multi 1783.0 4845.2 2738.6 8029.3 53.6% 65.7% Spawn ? single 1645.0 2546.8 2632.9 3168.8 60.1% 24.4% Spawn ? multi 5877.5 17688.8 8459.9 23650.1 43.9% 33.7% Note this was on a 4core DD1 system running at 1.6GHz. -- 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: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Zesty: In Progress 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
