Mark Felder wrote:
I recommend posting this on the Postgres performance list, too.
Regards,
Mark
I think if PostgreSQL uses semaphore for inter-process locking,
it might be a good idea to use POSIX semaphore exits in our head
branch, the new POSIX semaphore implementation now supports
process-shared, and is more light weight than SYSV semaphore,
if there is no contention, a process need not enter kernel to
acquire/release a lock. Note that I have just fixed a bug in head
branch. However RELENG_8 does not support process-shared semaphore
yet.
Regards,
David Xu
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