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From: Markus Schaber <schabi@logix-tt.com>
To: pgsql-performance@postgresql.org
Subject: Re: Kill a session
Date: Fri, 14 Jul 2006 13:28:29 +0200
Message-ID: <44B77FDD.2000900@logix-tt.com> (raw)
In-Reply-To: <8780.1152856222@sss.pgh.pa.us>
References: <6BCB9D8A16AC4241919521715F4D8BCEA0FAE8@algol.sollentuna.se>
	<44B51896.1000808@modgraph-usa.com>
	<20060712170404.GA27392@uio.no>
	<44B70017.6000703@modgraph-usa.com>
	<8780.1152856222@sss.pgh.pa.us>

Hi, Tom,

Tom Lane wrote:
> Our expectation is that all or at least most queries should respond to
> SIGINT or SIGTERM interrupts pretty rapidly, say on a less-than-a-second
> timescale.  However there are various loops in the backend that fail to
> execute CHECK_FOR_INTERRUPTS sufficiently often :-(. 

The same is true for user-defined C funtions.

The PostGIS GEOS geometry functions come to mind, for complex
geometries, they can need hours to complete. And as GEOS is a 3rd-Party
library, I don't see an easy way to make them CHECK_FOR_INTERRUPTS.

Does anybody know how this is for plpgsql, pljava and plpython?


HTH,
Markus
-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org



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