Identify which process is responsible for heavy disk i/o under FreeBSD

Question

I wonder how I can monitor which process takes out all my IO bandwith. The only command i know is gstat but it shows cumulative info. Is there any tools i can use to inspect the running processes for their io usage? The system is FreeBSD 8.3

Thank you

@Vadim iotop doesn't exist on FreeBSD. FreeBSD is not Linux. — Chris S, Dec 27 '12 at 22:50

score 9 · Accepted Answer · 2013-01-05T02:42:56.893

9

You can use FreeBSD top to achieve this.

While running top interactively, press m.

According to top man page :


       m      Toggle the display between 'cpu' and 'io' modes.

Of course, this tip won't work under linux as linux top and bsd top are different programs.

edited Jan 05 '13 at 02:42

answered Dec 24 '12 at 13:42

Elvin · Answer 2 · 2022-07-26T16:25:38.700

0

top -a -m io

BSD's top command has 2 modes, io and cpu.

-a lists the full command line for processes.

This can also be invoked interactively by pressing m (and a) if desired.

The other native IO commands such as iostat -w and systat -dipslay iostat lack the processes unfortunately.

edited Jul 26 '22 at 16:25

answered Jul 26 '22 at 16:19

Elvin

101

Identify which process is responsible for heavy disk i/o under FreeBSD

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