On Thu, Apr 22, 2010 at 10:12:37PM +0200, Felix Blanke wrote: > scooter ~ # hdparm -tT /dev/sdb3 > > /dev/sdb3: > Timing cached reads: 18686 MB in 2.00 seconds = 9354.32 MB/sec > Timing buffered disk reads: 758 MB in 3.00 seconds = 252.61 MB/sec > > scooter ~ # hdparm -tT /dev/mapper/ssd > > /dev/mapper/ssd: > Timing cached reads: 17432 MB in 2.00 seconds = 8725.18 MB/sec > Timing buffered disk reads: 158 MB in 3.02 seconds = 52.36 MB/sec > > > The first value is perfect, then second one really sucks. > Obv. /dev/mapper/ssd is the decrypted /dev/sdb3 > > Any idea about that? dm-crypt is slow - and when it is read I don't think alignment will do any difference. loop-AES might be faster. Richard _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
