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Subject: Re: cygserver - Postgres Multiple connection Load Testing - Inifinte Loop
To: cygwin AT cygwin DOT com
References: <200408030333 DOT i733XEXn023894 AT mx3 DOT redhat DOT com> <20040803100612 DOT GP31522 AT cygbert DOT vinschen DOT de> <20170321025614 DOT GA2100214 AT tornado DOT leadboat DOT com> <20170324171101 DOT GI29995 AT calimero DOT vinschen DOT de> <ffa36cc6-a875-aad2-4a63-4ba7408f2ace AT gmail DOT com> <20170325113011 DOT GM29995 AT calimero DOT vinschen DOT de>
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID: <549659fd-8e8a-b10e-3ff2-0519ddcdfd74@gmail.com>
Date: Sat, 25 Mar 2017 13:02:46 +0100
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On 25/03/2017 12:30, Corinna Vinschen wrote:
> On Mar 25 09:09, Marco Atzeri wrote:

>>
>> It seems that the number of max available semaphores is frozen to first call
>> value.
>
> That's normal and documented.  An existing semaphore set using the same
> key has the number of semaphores defined in the first call, until you
> remove the semaphore set with, for instance, ipcrm -s.  POSIX has this
> to say:
>
>    [EINVAL]
>       The value of nsems is either less than or equal to 0 or greater
>       than the system-imposed limit, or a semaphore identifier exists
>       for the argument key, but the number of semaphores in the set
>       associated with it is less than nsems and nsems is not equal to 0.
>
> Linux doesn't care, but BSD does, and our XSI IPC code is 95% BSD.
>
>
> Corinna
>

noted.

Thanks Marco

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