uninterruptible sleep

[Net Llama!]

Normally, a process should not be in the uninterruptable sleep state. 
Specifically which process(es) are in that state on your system?  Which 
distro are you running?

On Fri, 5 Jan 2007, Dirk Moolman wrote:

> I am trying to troubleshoot one of my linux servers that is very slow
> lately.  One thing that I worry about, is the column b (uninterruptible
> sleep) of the vmstat output, that runs up to values of about 35.  But I
> do not know how to troubleshoot this any further.  Searching for more
> info about uninterruptible sleep on the web, I came across this post
> (see bottom of mail).
>
> But from what I have learnt about this column (b), there could be many
> reason for processes being in this state.   How would I identify the
> cause of this ?
>
> Hope you can help.
>
>
>
> POST:
>
> "I have a problem with what I believe might be related to the aic79xx
> driver.
> I'm running 2.4.33.3 kernel with default aic79xx driver version 1.3.10"
>
> [snip]
>
> " The machine is a mail server that was recently migrated to the new
> hardware
> and now the load average is constantly between 10 and 20 and sometimes
> climbs higher. top and vmstat shows lots of processes in uninterruptible
>
> sleep, which as far I understand means that the processes wait while the
> driver code to complete"

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lonni J Friedman                        netllama at linux-sxs.org
LlamaLand				http://netllama.linux-sxs.org