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Re: [HACKERS] removing the exec() from doexec()

From: "Maurice Gittens" <mgittens(at)gits(dot)nl>
To: "Bruce Momjian" <maillist(at)candle(dot)pha(dot)pa(dot)us>
Cc: <brett(at)abraxas(dot)scene(dot)com>, <pgsql-hackers(at)hub(dot)org>
Subject: Re: [HACKERS] removing the exec() from doexec()
Date: 1998-04-30 06:32:16
Message-ID: 005601bd7401$baac8660$d7fb4fc1@caleb..gits.nl (view raw or flat)
Thread:
Lists: pgsql-hackers
-----Original Message-----
From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: maillist <maillist(at)candle(dot)pha(dot)pa(dot)us>
Cc: brett(at)abraxas(dot)scene(dot)com <brett(at)abraxas(dot)scene(dot)com>; pgsql-hackers(at)hub(dot)org
<pgsql-hackers(at)hub(dot)org>
Date: donderdag 30 april 1998 10:12
Subject: Re: [HACKERS] removing the exec() from doexec()


>> This exec() takes 15% of our startup time.  I have wanted it removed for
>> many releases now.  The only problem is to rip out the code that
>> re-attached to shared memory and stuff like that, because you will no
>> longer loose the shared memory in the exec().  The IPC code is
>> complicated, so good luck.  I or others can help if you get stuck.
>>
>

I tried to replace the execs with forks once (an hour or two job).
Indeed I got some shared memory initialisations problems.

I got distracted before I finished it.

Success.

With regrads from Maurice.



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