Hello Grant, Distribution? Release?
I'd go about reviewing the sysstat output (aka sar reports) during the period of the issue to see io stats, any usful things to see if something stands out. Will also allow you to review the swap usage during those times too. If the package is not installed, get it installed for the next occurences. Thanks On Wed, May 9, 2012 at 9:49 AM, Grant Street <[email protected]> wrote: > Hello > > I have some desktop linux machines that have periods of extremely high > system time (30-90%) with no obvious cause. The users see it as a hang or a > freeze to the point of 10sec for a key press to register. it comes and goes > seemingly randomly but only lasts max about 1-2 min. > > What I'm after is any hints on how to track down whats causing this. > > Symptoms > - load average is low (sub 1) > - No process is consuming a lot of cpu (from top) > - No swapping is occurring at the time > - plenty of free memory > - no/low IOwait% > - IRQ% is 0 > - Still has Idle available > - nothing in dmesg > > Any help or investigation tips would be appreciated > > Thanks > -- > SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ > Subscription info and FAQs: > http://slug.org.au/faq/**mailinglists.html<http://slug.org.au/faq/mailinglists.html> > -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
