From: Tom Lane <tgl@sss.pgh.pa.us>
To: Damon Hart <dhcom@sundial.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: PostgreSQL performance on various distribution stock kernels
Date: Mon, 26 Nov 2007 18:06:34 -0500
Message-ID: <5104.1196118394@sss.pgh.pa.us> (raw)
In-Reply-To: <1196117408.19996.16.camel@xw1.bbd>
References: <1196117408.19996.16.camel@xw1.bbd>
Damon Hart <dhcom@sundial.com> writes:
> So, what's different between these tests? I'm seeing performance
> differences of between +65% to +90% transactions per second of the
> OpenVZ kernel running on the HN over the stock Fedora 8 kernel. Is
> this reflective of different emphasis between RHEL and Fedora kernel
> builds? Some OpenVZ optimization on top of the RHEL5 build? Something
> else? Where should I look?
Considering how raw Fedora 8 is, I think what you've probably found is a
performance bug that should be reported to the kernel hackers.
Just to confirm: this *is* the same filesystem in both cases, right?
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, dhcom@sundial.com
Subject: Re: PostgreSQL performance on various distribution stock kernels
In-Reply-To: <5104.1196118394@sss.pgh.pa.us>
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