[celeste-discuss] unable to create threads

[Fred Oliver]

Can/should this feature be disabled? It seems that it might put a lot of
resources into satisfying a single request, at the expense of the system
throughput as a whole. Would you agree? If so, I think I would want to
disable it.

Also, in my tests, there are at most 50 client requests in parallel. In
this case, do you have >10 threads per client request in play? Perhaps
there is a problem returning threads to the pools?

Fred


Glenn Scott wrote:
> Some tuning is clearly necessary.  Do you have an upper limit on the
> per-process or system-wide threads?  What is the configured heap-size
> for the JVM?
> 
> Each node keeps a few thread pools to use, and some threads are created
> but are only periodically used.  Some attention to those threads in
> particular is useful.  Time to finish the configuration hooks to set
> these things from a config file/command line.
> 
> Thanks,
> Glenn
> 
> On Apr 8, 2009, at 12:37 PM, Fred Oliver wrote:
> 
>> Glenn,
>>
>> My test (50 client threads creating/writing/reading 100 files) is now
>> running the celeste node receiving the requests out of threads (e.g.
>> over 5200 threads).
>>
>> It looks like your map/reduce changes might be involved?
>>
>> Fred