[dm-crypt] unusual writing speeds when benchmark speeds are high enough

Heinz Diehl htd at fancy-poultry.org
Mon Mar 18 11:01:48 CET 2013

On 18.03.2013, Matthias Schniedermeyer wrote: 

> The SSD i have can reach (with encryption) about 400MB/s, but that is 
> best-case performance when all moons are aligned. I haven't really 
> benchmarked the real-world performance, the dd-example (with conv=fsync) 
> only got 88MB/s.

On all my SSD disks, cryptsetup performance is not even near that. I
have about 450 MB/s without encryption, and max. 120 MB/s with. 

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