I built Xenial and Artful test kernels with the patch sets provided in comments #2 and #4. The test kernels can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1744173 Can you test this kernel and see if it resolves this bug? Note, to test this kernel, you need to install both the linux-image and linux-image-extra .deb packages. 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/1744173 Title: artful: rfi-flush: Switch to new linear fallback flush Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Status in linux source package in Artful: Triaged Bug description: Change flush from congruence-first with dependencies to linear with no dependencies, which increases flush performance by 8x on P8, and 3x on P9 (as measured with null syscall loop, which will have the flush area in the L2). The flush also becomes simpler and more adaptable to different cache geometries. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1744173/+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
