-1

I compile sources in /tmp mounted into RAM.
I'd like to know fast it is! That's show/monitor I/O activity (MB/s) for this device.

If I want to monitor HD bandwidth I would have used tools like iotop but for RAM it doesn't work!

Long story short: how can I monitor/show RAM bandwidth (I/O) activity?

mattia.b89
  • 3,142
  • 2
  • 14
  • 39

1 Answers1

0

All the monitoring tools are geared towards block devices and a RAM disk is not a block device.

The simplets way to compare compiling to a RAM disk versus a HDD is to:

  • date-u, compile on HDD, date-u
  • copy same source to RAM disk
  • date-u, compile on RAM disk, date-u

Voilà: the overall performance improvement.

Fabby
  • 5,836
  • 2
  • 22
  • 38