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240GB model offers up to 740MB/sec max read throughput and 720MB/sec maximum write throughput. Of course, blazing fast SSD technology like this also comes at a

by MojoKid 16y ago

240GB model offers up to 740MB/sec max read throughput and 720MB/sec maximum write throughput. Of course, blazing fast SSD technology like this also comes at a premium, as you'd expect.

mhansen 16y ago
For some perspective: cat /dev/sda | pv > /dev/null Reads 188MB/s on my new Thinkpad's Samsung SSD
- mrb 16y ago
  cat'ing and piping into pv is a poor way to benchmark as the CPU overhead is too high (the buffer size for a pipe kernel object is 4kB, forcing a high number of context switches). Try "dd bs=32k </dev/sda >/dev/zero" and monitor with "iostat -m 1", you will see a higher throughput.
  - mhansen 16y ago
    Thanks for the tip!
    - icefox 16y ago
      what was your result?
      - mhansen 16y ago
        The same - my CPU was about only about 50% saturated on the pv command (if the disk was twice as fast, I guess the CPU would become the bottleneck)
        mrb 16y ago
        So your SSD is slow-ish... FYI most achieve ~280MB/s these days (which is the practical bottleneck of a SATA 300MB/s link).
  - _delirium 16y ago
    hdparm comes with something built-in that tries to do a reasonable first-cut benchmark, 'hdparm -t /dev/sda'
gjm11 16y ago
Note: the above is a verbatim quotation from the article. I think it's poor form to do that without indicating that it's a quotation.