Detect Blu-ray optical disc drive speed?

[beandog]

So, Blu-ray drives have different read speeds. Spec says a 1x can read at 32 Mbits / second, or, 4.5 megabytes.

Is there a way though to detect the read-speed of an optical drive in Linux that anyone knows of?

[beandog]

Okay, I figured it out.

Put a Blu-ray disc in your tray (not DVD or CD, they will report different speeds), and run cdrdao:

Code: Select all

cdrecord -prcap

Here's a snippet from mine:

Code: Select all

  Maximum read  speed: 17982 kB/s (CD 102x, DVD 12x, BD  4x)
  Current read  speed: 17982 kB/s (CD 102x, DVD 12x, BD  4x)
  Maximum write speed:     0 kB/s (CD   0x, DVD  0x, BD  0x)
  Current write speed:     0 kB/s (CD   0x, DVD  0x, BD  0x)

Mine's an older drive, so it's only 4x reading speed.

Blu-ray spec is 4.5 MB/s (1024k notation), so mine is reading at 18 MB/s total.

Note that cdrdao uses 1000 notation for kilos, which is why the number is lower. See http://www.matisse.net/bitcalc/