[Kernel-packages] [Bug 1845018] Re: SIMD broken in 0.8.1 please backport fix, like Debian
Apologies for not getting around to fixing this. Eoan will be EOL next month, so I doubt I can get this fix into Eoan as SRU to benefit users before we hit EOL. Ubuntu Focal LTS has this support so I recommend upgrading to Focal. ** Changed in: zfs-linux (Ubuntu) Importance: Undecided => Medium ** Changed in: zfs-linux (Ubuntu) Assignee: (unassigned) => Colin Ian King (colin-king) ** Changed in: zfs-linux (Ubuntu) Status: Confirmed => Won't Fix -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1845018 Title: SIMD broken in 0.8.1 please backport fix, like Debian Status in zfs-linux package in Ubuntu: Won't Fix Bug description: Eoan Ermine is using 0.8.1. On the current LiveCD, ZFS uses scalar instead of hardware accelerated SIMD instructions. As of zfs-linux 0.8.1-3 (unstable) and 0.8.1-4~bpo10+1 (buster- backports), Debian has "Cherry-pick e5db313 to fix the linux-SIMD compatibility" (https://tracker.debian.org/news/1065134/accepted-zfs- linux-081-4bpo101-source-amd64-all-into-buster-backports-buster- backports/). This fix will be included in 0.8.2, don't expect expect Eoan Ermine to move to that release. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1845018/+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
[Kernel-packages] [Bug 1845018] Re: SIMD broken in 0.8.1 please backport fix, like Debian
This is the PR to backport the master fix into 0.8.2: https://github.com/zfsonlinux/zfs/pull/9515 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1845018 Title: SIMD broken in 0.8.1 please backport fix, like Debian Status in zfs-linux package in Ubuntu: Confirmed Bug description: Eoan Ermine is using 0.8.1. On the current LiveCD, ZFS uses scalar instead of hardware accelerated SIMD instructions. As of zfs-linux 0.8.1-3 (unstable) and 0.8.1-4~bpo10+1 (buster- backports), Debian has "Cherry-pick e5db313 to fix the linux-SIMD compatibility" (https://tracker.debian.org/news/1065134/accepted-zfs- linux-081-4bpo101-source-amd64-all-into-buster-backports-buster- backports/). This fix will be included in 0.8.2, don't expect expect Eoan Ermine to move to that release. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1845018/+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
[Kernel-packages] [Bug 1845018] Re: SIMD broken in 0.8.1 please backport fix, like Debian
Yeah, on eoan I get: $ cat /proc/spl/kstat/zfs/fletcher_4_bench 0 0 0x01 -1 0 4250112835 2191051355493 implementation native byteswap scalar 7121128976 5682673600 superscalar 9132158207 6984205638 superscalar4 8279361738 6770847284 fastest superscalarsuperscalar The same machine on bionic gets: 0 0 0x01 -1 0 67628130770 127422129063 implementation native byteswap scalar 7105261516 5016484387 superscalar 9725496554 7224297957 superscalar4 8153749237 6904111964 sse2 163259291409147142980 ssse31601095195714542922899 avx2 2437961704023016231817 fastest avx2 avx2 Bionic's algorithm using avx2 is 2.6x faster. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1845018 Title: SIMD broken in 0.8.1 please backport fix, like Debian Status in zfs-linux package in Ubuntu: Confirmed Bug description: Eoan Ermine is using 0.8.1. On the current LiveCD, ZFS uses scalar instead of hardware accelerated SIMD instructions. As of zfs-linux 0.8.1-3 (unstable) and 0.8.1-4~bpo10+1 (buster- backports), Debian has "Cherry-pick e5db313 to fix the linux-SIMD compatibility" (https://tracker.debian.org/news/1065134/accepted-zfs- linux-081-4bpo101-source-amd64-all-into-buster-backports-buster- backports/). This fix will be included in 0.8.2, don't expect expect Eoan Ermine to move to that release. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1845018/+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
[Kernel-packages] [Bug 1845018] Re: SIMD broken in 0.8.1 please backport fix, like Debian
Just needed to add that this cherry-pick has been found to be a problem. Where it has been implemented, it has been retracted. Issue: https://github.com/zfsonlinux/zfs/issues/9346 Issue: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=940932 Debian retraction 0.8.2-1 (unstable), also in 0.8.2-2 (backports) https://tracker.debian.org/news/1068877/accepted-zfs-linux-082-2bpo101-source-amd64-all-into-buster-backports/ Although, this certain cherry-pick shouldn't be used, this launchpad bug should remain open because the lack of SIMD functionality hurts ZFS performance. When a corrected fix is released, it should be considered for backport to 19.10. ** Bug watch added: Github Issue Tracker for ZFS #9346 https://github.com/zfsonlinux/zfs/issues/9346 ** Bug watch added: Debian Bug tracker #940932 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=940932 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1845018 Title: SIMD broken in 0.8.1 please backport fix, like Debian Status in zfs-linux package in Ubuntu: Confirmed Bug description: Eoan Ermine is using 0.8.1. On the current LiveCD, ZFS uses scalar instead of hardware accelerated SIMD instructions. As of zfs-linux 0.8.1-3 (unstable) and 0.8.1-4~bpo10+1 (buster- backports), Debian has "Cherry-pick e5db313 to fix the linux-SIMD compatibility" (https://tracker.debian.org/news/1065134/accepted-zfs- linux-081-4bpo101-source-amd64-all-into-buster-backports-buster- backports/). This fix will be included in 0.8.2, don't expect expect Eoan Ermine to move to that release. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1845018/+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
[Kernel-packages] [Bug 1845018] Re: SIMD broken in 0.8.1 please backport fix, like Debian
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: zfs-linux (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/1845018 Title: SIMD broken in 0.8.1 please backport fix, like Debian Status in zfs-linux package in Ubuntu: Confirmed Bug description: Eoan Ermine is using 0.8.1. On the current LiveCD, ZFS uses scalar instead of hardware accelerated SIMD instructions. As of zfs-linux 0.8.1-3 (unstable) and 0.8.1-4~bpo10+1 (buster- backports), Debian has "Cherry-pick e5db313 to fix the linux-SIMD compatibility" (https://tracker.debian.org/news/1065134/accepted-zfs- linux-081-4bpo101-source-amd64-all-into-buster-backports-buster- backports/). This fix will be included in 0.8.2, don't expect expect Eoan Ermine to move to that release. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1845018/+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
