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From: Gregory Stark <stark@enterprisedb.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: James Mansion <james@mansionfamily.plus.com>
Cc: Magnus Hagander <magnus@hagander.net>
Cc: Craig James <craig_james@emolecules.com>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: pgsql-performance@postgresql.org
Subject: Re: libgcc double-free, backend won't die
Date: Sun, 16 Dec 2007 18:16:18 +0000
Message-ID: <877ijeqzd9.fsf@oxford.xeocode.com> (raw)
In-Reply-To: <27316.1197828101@sss.pgh.pa.us>
References: <4729B1E9.2080306@gmail.com>
	<475E4133.5080009@emolecules.com>
	<20071211112128.GB4708@alvh.no-ip.org>
	<475EA754.1090307@emolecules.com>
	<20071211151416.GD10710@alvh.no-ip.org>
	<475EA9FD.9000706@emolecules.com>
	<20071211152010.GE10710@alvh.no-ip.org>
	<475EAB69.9@emolecules.com>
	<20071211152838.GH4708@alvh.no-ip.org>
	<475EB1B9.3000405@emolecules.com>
	<20071211155703.GT31937@svr2.hagander.net>
	<87r6htw4e7.fsf@oxford.xeocode.com>
	<476564D6.7090702@mansionfamily.plus.com>
	<27316.1197828101@sss.pgh.pa.us>

"Tom Lane" <tgl@sss.pgh.pa.us> writes:

> James Mansion <james@mansionfamily.plus.com> writes:
>> Is there any particular reason not to ensure that any low-level 
>> threading support in libc is enabled right
>> from the get-go, as a build-time option?
>
> Yes.
> 1) It's of no value to us
> 2) On many platforms there is a nonzero performance penalty

And the only reason to do that would be to work around one bug in one small
range of glibc versions. If you're going to use a multi-threaded library
(which isn't very common since it's hard to do safely for all those other
reasons) surely using a version of your OS without any thread related bugs is
a better idea.


-- 
  Gregory Stark
  EnterpriseDB          http://www.enterprisedb.com
  Ask me about EnterpriseDB's Slony Replication support!

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