On Fri, Oct 26, 2007 at 02:53:54PM -0400, Jon Wallace wrote: > I'm using a dual xeon processor running Fedora7 in a desktop role > (KDE). I created a 1.2GB file to get an idea of how long it would > take to write/read using ecryptfs vs non-ecryptfs on an ext3 file > system. I ran multiple iterations of cp() and dd() using both encfs > and ecryptfs, and came up with the following results using time(1). > The timing differences I'm getting between encfs and ecryptfs > surprised me since in a previous posting I recall Mike saying that > he expected ecryptfs to be a better performer than encfs, so I was > hoping someone could comment on them.
eCryptfs does not incur overhead from frequent kernel/user context switches, which eliminates a major bottleneck with FUSE-based filesystems. Recent changes may have sacrificed performance for broader compatibility with lower filesystems (especially networked filesystems). Trevor also recently pinpointed the internal crypto API calls as the primary culprit for performance degradation in recent versions of eCryptfs. We have some optimizations in the woodworks. One big optimization will involve switching to use the asynchronous crypto API interface. > Regarding the ecryptfs-manager, I've noticed that when looping through the > menu to create multiple keys, the "key type" is displayed multiple times. > Shouldn't "openssl" be displayed only once regardless of how many times you > loop through the menu? Or is this expected behavior? (sorry if this is a > known issue) I've included a log below to demonstrate the looping > output. It's probably just a linked list flub. Thanks for reporting it. Mike
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