[Beowulf] LSI Megaraid stalls system on very high IO?

Chris Samuel samuel at unimelb.edu.au
Fri Aug 1 20:17:57 PDT 2014

On Fri, 1 Aug 2014 03:13:39 PM mathog wrote:

> That may fix the problem but I am still curious about exactly what 
> happened during the terminal stalls.   Using the current cfq scheduler 
> what is going on in the system that is keeping those terminal processes 
> from getting any CPU time?

Not entirely sure, but you may get some idea with latencytop *if* it is able 
to get some time to run to return info.

 Christopher Samuel        Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
 http://www.vlsci.org.au/      http://twitter.com/vlsci

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