"Jignesh K. Shah" <[EMAIL PROTECTED]> writes:
> What its saying is that there are holds/waits in trying to get locks
> which are locked at Solaris user library levels called from the
> postgresql functions:
> For example both the following functions are hitting on the same mutex
> lock 0x10059e280 in Solaris Library call:
> postgres`AllocSetDelete+0x98
> postgres`AllocSetAlloc+0x1c4
That's a perfect example of the sort of useless overhead that I was
complaining of just now in pgsql-patches. Having malloc/free use
an internal mutex is necessary in multi-threaded programs, but the
backend isn't multi-threaded. And yet, apparently you can't turn
that off in Solaris.
(Fortunately, the palloc layer is probably insulating us from malloc's
performance enough that this isn't a huge deal. But it's annoying.)
regards, tom lane
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