2010/12/7 Віталій Тимчишин <tivv00@gmail.com>:
> As far as I can see from the source, there is a lot of code executed under
> the partition lock protection, like two hash searches (and possibly
> allocations).
Yeah, that was my concern, too, though Tom seems skeptical (perhaps
rightly). And I'm not really sure why the PROCLOCKs need to be in a
hash table anyway - if we know the PROC and LOCK we can surely look up
the PROCLOCK pretty expensively by following the PROC SHM_QUEUE.
--
Robert Haas
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