[Pound Mailing List] 100% CPU in pound load balancer

Hi, all

Thanks for a nice resource saving load balancer and request filter.

Occasionally our 2.8a (soon 2.8) Pound installations enter
a bad state where they use 100% CPU and cause the system load
to indicate lots (more than 20) of running threads, even when
there is very little actual traffic.  I am not sure where to
look for this, the only thing obviously strange in the log is
a number of occurrences of

     pound: NULL get_thr_arg

The installation with less traffic also logs a lot of

     connect_nb: poll timed out

But these log messages might not be related.

Any idea what to look for in the code or configuration?

Kernel is x86_64 Linux 3.16, OpenSSL is 1.0.2o.  Some local patches
applied but they seem unrelated.

Enjoy

Jakob
-- 
Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
Transformervej 29, 2860 Søborg, Denmark.  Direct +45 31 13 16 10
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WiseMo - Remote Service Management for PCs, Phones and Embedded


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