On 2012-06-13 13:14:29, Colin King wrote: > From: Colin Ian King <colin.king@xxxxxxxxxxxxx> > > This is a forward port of Thieu Le's patch from 2.6.39 to migrate > to using the ablkcipher API for eCryptfs. > > Performance Improvements: > > I've instrumented this patch to measure TSC ticks per 4K encrypt > and decrypt operations to see how this patch compares to the original > code using the default AES generic crypto engine as well as the > new Intel AES-NI instruction capable crypto engine on an Ivybridge > i7-3770. > > Patched: TSC ticks for 4K TSC ticks per byte > AES-Generic Read: 5843.5 1.42 > AES-Generic Write: 19295.8 4.71 > > AES-NI Read: 5677.0 1.39 > AES-NI Write: 19257.9 4.70 > > Unpatched: > AES-Generic Read: 92861.5 22.67 > AES-Generic Write: 93642 22.61 > > AES-NI Read: 91610.2 22.37 > AES-NI Write: 93659.2 22.87 > > ..so at the crypto engine stage we see some considerable speed improvement > with the patch. Colin - Thanks again for carrying out this performance testing! Tyler > > I've also run some simple benchmarking tests comparing this patch with > the un-patched kernel on a variety of machines (Ivybridge, Sandybridge, > Atom) and drives (HDD, SSD) to see how well it performs. A LibreOffice > speadsheet of the test result data and a write-up are available: > > http://kernel.ubuntu.com/~cking/ecryptfs-async-testing/async-patch-results-1.ods > http://kernel.ubuntu.com/~cking/ecryptfs-async-testing/async-patch-summary.txt > > Soak Testing: > * many kernel builds using -j 64, on HDD and SSD > * eCryptfs tests with lower filesystems: ext2, ext3, ext4, xfs, btrfs > * exercised on a 4 CPU (+hyperthreaded) build machine > * bonnie++ and tiobench tests > > Colin Ian King (1): > ecryptfs: Migrate to ablkcipher API > > fs/ecryptfs/crypto.c | 678 +++++++++++++++++++++++++++++++---------- > fs/ecryptfs/ecryptfs_kernel.h | 38 ++- > fs/ecryptfs/main.c | 10 + > fs/ecryptfs/mmap.c | 87 +++++- > 4 files changed, 636 insertions(+), 177 deletions(-) > > -- > 1.7.9.5 > > -- > To unsubscribe from this list: send the line "unsubscribe ecryptfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html
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