From: Christopher Browne <cbbrowne@acm.org>
To: pgsql-performance@postgresql.org
Subject: Re: go for a script! / ex: PostgreSQL vs. MySQL
Date: Mon, 13 Oct 2003 19:58:36 -0400
Message-ID: <m3smlw666r.fsf@wolfe.cbbrowne.com> (raw)
References: <007901c38f2b$0b585590$2802a8c0@webbased10>
<3F8819EF.7010004@chuckie.co.uk>
<3F88BFD7.1020808@familyhealth.com.au>
<200310121331.42693.josh@agliodbs.com>
<x77k39p2p4.fsf@yertle.int.kciLink.com>
Centuries ago, Nostradamus foresaw when khera@kcilink.com (Vivek Khera) would write:
>>>>>> "JB" == Josh Berkus <josh@agliodbs.com> writes:
>
> JB> Chris,
>>> > PostgreSQL requires some more shared memory to cache some tables, x Mb,
>>> > do you want to increase your OS kernel parameters?
>>> >
>>> > Tweak shmmax and shmmall
>>>
>>> Note that this still requires a kernel recompile on FreeBSD :(
>
> JB> Not our fault, now is it? This would mean that we wouldn't be
> JB> able to script for FreeBSD. Bug the FreeBSD developers.
>
> "I read it on the net so it must be true" applies here. You /can/ set
> these values via sysctl calls.
Yes, indeed, sysctl can tweak these values fairly adequately.
Now, numbers of semaphors are not as readily tweaked; I wound up
limited, the other day, when I tried setting values for...
kern.ipc.semmns
kern.ipc.semmni
--
let name="cbbrowne" and tld="ntlug.org" in String.concat "@" [name;tld];;
http://www.ntlug.org/~cbbrowne/x.html
"So, when you typed in the date, it exploded into a sheet of blue
flame and burned the entire admin wing to the ground? Yes, that's a
known bug. We'll be fixing it in the next release. Until then, try not
to use European date format, and keep an extinguisher handy."
-- slam@pobox.com (Tequila Rapide)
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To: pgsql-performance@postgresql.org
Cc: cbbrowne@acm.org
Subject: Re: go for a script! / ex: PostgreSQL vs. MySQL
In-Reply-To: <m3smlw666r.fsf@wolfe.cbbrowne.com>
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