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Sybase IQ 16 Threads

Hi

I have been running different queries on IQ, and i have been monitoring these queries with sp_iqcontext but noted that for all queries the IQTHREADS field always shows me that only use one thread per query.

The instance of IQ have 16 cores and  90 GB of memory RAM (-iqmc 30000  -iqtc 30000 -iqlm 30000 )

Anyone know if this is a normal behavior?  Because it always uses one thread for query.


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1 Answer

  • Nov 10, 2015 at 09:18 PM

    No, this is not normal.  Can you post a copy of your IQ config file?  Also, include an HTML query plan, captured post execution, as this will show us what decisions IQ made to run with just 1 thread.

    Mark

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