FreeBSD 6-STABLE freezing up ...

[Dan Nelson]

In the last episode (Jun 23), Marc G. Fournier said:
> On Fri, 23 Jun 2006, Konstantin Belousov wrote:
> >What exactly happens ? Are you sure that the _system_ freezes ?
> >Could it be that only your application has some troubles ?
> 
> Nothing works ... I can ping the server, and that is about it ... the
> last time it happened, I had a vmstat process running in an xterm, to
> see, and I suspect that there is a process (or two) starting up
> hitting the hard drive extra hard, as the drives go from an ~5 busy,
> to 45 busy, and stays like that ... the fun part is figuring out what
> is killing the drives ;(

Hit "m" in top to switch to I/O mode, and enter "ototal" to sort by I/O
instead of CPU.  As long as whatever's doing the I/O lasts longer than
top's refresh interval it should show up.

-- 
	Dan Nelson
	dnelson at allantgroup.com