As we've mentioned to others, try increasing /sys/block/<devices>/queue/nr_requests significantly (e.g. see if 50,000 has any impact). Or experiment with these patches: http://people.redhat.com/mpatocka/patches/kernel/dm-crypt-paralelizace/current/ (at your own risk, of course). Alasdair _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt