I wrote:
> Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> writes:
>> I have a fatal error message while connecting more than 32 users using
>> current:
>> Aug 29 11:25:18 srapc1474 postgres[12189]: [1] FATAL 1:
>> ProcGetNewSemIdAndNum: cannot allocate a free semaphore
>> rather than a more informative message:
>> Sorry, too many clients already
>> Does anynbody know what's happening?

> Ugh.  I thought I'd tested that.

Indeed I had, but I'd used a low value of MaxBackends to test it.
If MaxBackends is a multiple of PROC_NSEMS_PER_SET (16) then too-many-
backends will be detected here, not later on when we try to insert our
PROC entry into the sinval array.  Whoops.  Fix committed.

			regards, tom lane

In response to

• Re: cannot detect too many clients at 2001-09-03 18:22:03 from Tom Lane

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