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Re: Re[2]: Re: [PATCHES] A patch for xlog.c

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: The Hermit Hacker <scrappy(at)hub(dot)org>
Cc: jamexu <jamexu(at)telekbird(dot)com(dot)cn>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Re[2]: Re: [PATCHES] A patch for xlog.c
Date: 2001-02-27 03:42:56
Message-ID: 200102270342.WAA08949@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackers
> > the only problem is because if we need to tune Postermaster to use
> > large buffer while system havn't so many SYSV shared memory, in many
> > systemes, we need to recompile OS kernel, this is a small problem to install
> > PGSQL to product environment.
> 
> What?  You don't automatically recompile your OS kernel when you build a
> system in the first place??  First step on any OS install of FreeBSD is to
> rid myself of the 'extras' that are in the generic kernel, and enable
> SharedMemory (even if I'm not using PgSQL on that machine) ...

He is saying the machine is already in production.  Suppose he has run
PostgreSQL for a few months, then needs to increase number of buffers. 
He can't exceed the kernel limit unless he recompiles.

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

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Next:From: The Hermit HackerDate: 2001-02-27 03:56:29
Subject: Re: Re[2]: Re: [PATCHES] A patch for xlog.c
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Subject: Re[3]: Re: [PATCHES] A patch for xlog.c

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