[opendx-dev] dxexec: 20% perf speedup

[Randall Hopper <aa8vb@yahoo.com>]

     From profiling dxexec, I've found that 20-25% of it's time in the
single-process case is spent locking and unlocking mutex locks (on SGI).
AFAICT these locks add unnecessary, avoidable overhead to the
single-process case.

     I can cook a patch so that mutex locks are only used in dxexec when
"nprocs > 1".  But before I do, I'd like to find out whether the DX
committers would be willing to commit this patch.

     Greg?  David?

Thanks,

-- 
Randall Hopper (mailto:aa8vb@yahoo.com)
EPA Scientific Visualization Center
US EPA MD/24 ERC-1A; RTP, NC 27711