I've tested this on a Haswell, Intel Core2 Duo and Conroe CPUs under emulation. The latter two CPUS don't have AES instruction sets and work fine. Attached are some benchmarks.
Also regression tested on Intel Core2 Duo and Haswell with the ubuntu zfs autotests, so I believe I've covered AES and non-AES code paths in the testing. ** Attachment added: "LibreOffice Calc spreadsheet data from performance tests on a memory backed ZFS encrypted file system." https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1881107/+attachment/5380055/+files/zfs-accellerated-performance-test.ods ** Tags added: verification-done verification-done-focal -- 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 Committed 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
