On 18.03.2013 02:42, .. ink .. wrote: > I would say, there are quite a few details missing. > > Hardware, Software? > > 28.4 MB/s also isn't what i would call fast, what is that? > > > > The person responded and this is his computer spec: > > intel core 2 duo e8500 > 2 gb ram > 2x 80 GB HDD western digital 7,200 RPM > Kernel 3.2.18-pclos3.bfq > > 32bit os > > No LVM volume or RAID stuff,the test was done from the user home directory. > > What speed do you get from "dd" command?. People usually say the speeds i > post are not high enough but i do not remember anybody saying what speeds > are normal,expected. My newest acquisition (got it friday), a 7200RPM HDD, does between 190MB/s (outer rim) and 90MB/s (inner rim). The performance i got out of it yesterday, when i tried the dd command, was 137MB/s (and 3.1 GB/s for the version without conv=fsync). The HDD before that, a "green" model with around 5400 RPM, does between 130MB/s and 60MB/s. The best performance i usually see in reality is about 110MB/s, but it depends on where the files are written to and also where the source-file was placed on the source-HDD, so in the worst-case is about 60MB/s. 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. -- Matthias _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
