I can confirm it. At the moment the kernel module is not patched and you need to install the package zfs-dkms.
without patch: WRITE SPEED 25,3 MB/s READ SPEED 52,6 MB/s with patch (apt install zfs-dkms && reboot): WRITE SPEED 173 MB/s READ SPEED 230 MB/s Ubuntu 20.04 LTS linux-image-5.4.0-40-generic (5.4.0-40.44) amd64 zfs-dkms (0.8.3-1ubuntu12.1) all CPU: AMD Opteron(tm) X3216 APU zfs encryption: aes-256-gcm -- 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/1881107 Title: zfs: backport AES-GCM performance accelleration Status in zfs-linux package in Ubuntu: Fix Released Status in zfs-linux source package in Focal: Fix Released Status in zfs-linux source package in Groovy: Fix Released Bug description: == SRU Justification == Upstream commit 31b160f0a6c673c8f926233af2ed6d5354808393 contains AES- GCM acceleration changes that significantly improve encrypted performance. Tests on a memory backed pool show performance improvements of ~15-22% for AES-CCM writes, ~17-20% AES-CCM reads, 34-36% AES-GCM writes and ~79-80% AES-GCM reads on a Sandybridge x86-64 CPU, so this looks like a promising optimization that will benefit a lot of users. == The fix == Backport of upstream 31b160f0a6c673c8f926233af2ed6d5354808393 - this is already backported in Groovy ZFS 0.8.3-1ubuntu13 == Test case == Run ZFS performance tests from ubuntu_performance_zfs_encryption ubuntu kernel team autotests. With the fix the encryption runs significantly faster, as noted earlier in the SRU justification. Also test with the 4 types of ZFS ubuntu autotests, should not fail any of these. == Regression Potential == This fix alters the crypto engine and adds in new optimizations for CPUs that have capable instruction sets. There is a risk that this new crypto code is erroneous. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1881107/+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
