On dim., 2012-07-22 at 12:07 -0700, Marc MERLIN wrote: > I know that SSDs are weird and all, but getting a raw device speed of > a > mere 23MB/sec down from 463MB/s and compared to 102MB/s for a > similarly > spinning drive, is a problem, is it not? > > Any suggestions would be appreciated. I'm using Debian sid (so still at 3.2 kernel), currently using a 256G Samsung SSD. What I get is: root@scapa:~# hdparm -t /dev/sda /dev/mapper/scapa_crypt /dev/sda: Timing buffered disk reads: 690 MB in 3.01 seconds = 229.47 MB/sec /dev/mapper/scapa_crypt: Timing buffered disk reads: 590 MB in 3.00 seconds = 196.43 MB/sec root@scapa:~# cryptsetup status /dev/mapper/scapa_crypt /dev/mapper/scapa_crypt is active and is in use. type: LUKS1 cipher: aes-xts-plain keysize: 256 bits device: /dev/sda2 offset: 4096 sectors size: 499587760 sectors mode: read/write flags: discards Regards, -- Yves-Alexis
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