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

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: maillist(at)candle(dot)pha(dot)pa(dot)us (maillist)
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 01:53:36
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
> 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.

Another item is to no longer use SYSV shared memory but use
mmap(MAP_ANON) because this allows a much larger amount of shared memory
to be used.

Bruce Momjian                          |  830 Blythe Avenue
maillist(at)candle(dot)pha(dot)pa(dot)us              |  Drexel Hill, Pennsylvania 19026
  +  If your life is a hard drive,     |  (610) 353-9879(w)
  +  Christ can be your backup.        |  (610) 853-3000(h)


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