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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Linos <info@linos.es>
Cc: Ross J. Reedstrom <reedstrm@rice.edu>
Cc: pgsql-performance@postgresql.org
Subject: Re: TCP network cost
Date: Sun, 01 Mar 2009 12:43:18 -0500
Message-ID: <13121.1235929398@sss.pgh.pa.us> (raw)
In-Reply-To: <49AAC6AC.60309@linos.es>
References: <1ca1c1410902171013q478f2620n13fcd68cb8b3d911@mail.gmail.com>
	<20090217070403.GB2486@cooker>
	<3FAF940B-9B0B-4DBA-8728-6096022129DF@infogears.com>
	<alpine.DEB.1.10.0902170032440.25606@asgard.lang.hm>
	<20090217070403.GB2486@cooker>
	<3FAF940B-9B0B-4DBA-8728-6096022129DF@infogears.com>
	<20090217200416.GA23707@cooker>
	<87hc2r272g.fsf@oxford.xeocode.com>
	<20090223194212.GA14802@cooker>
	<27042.1235423820@sss.pgh.pa.us>
	<20090224170201.GA25420@cooker>
	<49AAC6AC.60309@linos.es>

Linos <info@linos.es> writes:
> Hello, i have been having a problem like this in debian machines and i have 
> discovered that (almost in my case), the problem only arises when i am using 
> "ssl = true" in postgresql.conf although i am using clear tcp connections to 
> localhost to perform my query, if i disable ssl in configuration my localhost 
> query times goes from 4200ms to 110ms,

Does that number include connection startup overhead?  (If it doesn't,
it'd be pretty strange.)  Ross's problem is not about startup overhead,
unless I've misread him completely.

			regards, tom lane

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