Hey! I've got Corsair SSD 256Gb. After encryption (EEPC 5.2.2):
0.5Kb blocks, 8Mb/s read and 2.1Mb/s write
1024Kb blocks, 99Mb/s read and 99Mb/s write which is about the same as 7200 rpm HDD.
The partition is 100% of the drive, not sure would it be better if I left a part of it empty. Probably not. Quite disappointing performance.
Seems our IT would not upgrade any time soon.
Any chance for a patch of some kind? I do not think this drive falls into the category of some cheap SSD's.
Sorry no, this is not something we are able to back port. Your company would need to migrate to the latest product version, or maybe even wait for v7 at the end of the year.
Got SSD un-encrypted before repartitioning. What a difference (block - Mb/sec)!
Encrypted: 0.5Kb - 2.19Mb/sec, 4Kb - 14.8Mb/sec, 64Kb - 66.81Mb/sec, 256Kb - 90.33Mb/sec, 1024Kb - 99.09Mb/sec
Unencrypted: 0.5Kb - 2.14Mb/sec, 4Kb - 16.8Mb/sec, 64Kb - 175.37Mb/sec, 256Kb - 331.35Mb/sec, 1024Kb - 446.86Mb/sec
Which is 2x - 4.5x speed drop starting 16Kb blocks (linear vs. random read is about the same). So when I work with nicely aligned large SQL databases, it seems I loose alot. Basically safeboot got SSD to the speed of HDD which I have as the second drive.
I am still not getting why read speed is dropping that bad. If load levelling fails with full drive encryption and writes are slow. How would it affect reads?
Next is repartitioning the drive and leaving 20% un-partitioned. Will report back.
How do I check? Not sure if I could pick it as it uses company defaults. In Modules it references "SbAlg.sys" 4.2.11 (most of other modules are 220.127.116.11 or 18.104.22.168). And this SbAlg.sys is from 2008, SafeBoot FIPS AES Algorythm (256 bit). Is there a switch?