On 09/03/2010 10:28 AM, Yakov Hrebtov wrote: > I'm experirncing problems with performance of random IO operations of > dm_crypt-encrypted devices. > Sequential IO is good (using AES-NI gives almost no difference comparing with > unencrypted device), but random IO is poor comparing with unencrypted devices. Just info for the list - this mail is duplicate of https://bugzilla.kernel.org/show_bug.cgi?id=17892 so let's use this BZ to track it. I have some ideas how to improve it, but the change must follow patches which are currently waiting for upstream inclusion. (Actually the per-cpu thread patches helps in this case too as side effect.) Milan -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel