[Fwd: Bug#149056: postgresql: should not try in a busy loop when allocating resources]
This report was submitted as a Debian bug.
-----Forwarded Message-----
From: russell@coker.com.au
To: submit@bugs.debian.org
Subject: Bug#149056: postgresql: should not try in a busy loop when allocating resources
Date: 04 Jun 2002 23:06:35 +0200
Package: postgresql
Version: N/A
Severity: normal
When trying to create a semaphore Postgresql 7.2.1-3 will try 400,000 times per
second if it has problems. I think this is excessive, trying a mere 100 times
a second will give the same chance of getting a good result without wasting
excessive CPU time.
NB If another process which is CPU bound is using all the resources then
leaving CPU time free will improve the results...
-- System Information
Debian Release: 3.0
Kernel Version: Linux lyta 2.4.18lsm #1 Wed May 22 14:20:37 CEST 2002 i686 unknown
-----End of Forwarded Message-----
--
Oliver Elphick Oliver.Elphick@lfix.co.uk
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Oliver Elphick <olly@lfix.co.uk> forwards:
When trying to create a semaphore Postgresql 7.2.1-3 will try 400,000 times=
per
second if it has problems.
AFAICS it will try *once* and abort if it fails. Can you provide a
reproducible test case for the above behavior?
regards, tom lane
Tom Lane wrote:
Oliver Elphick <olly@lfix.co.uk> forwards:
When trying to create a semaphore Postgresql 7.2.1-3 will try 400,000 times=
per
second if it has problems.AFAICS it will try *once* and abort if it fails. Can you provide a
reproducible test case for the above behavior?
I assume he meant tries to grab a semaphore 400,000 times, but I may be wrong.
--
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