Re: [9.4 bug] The database server hangs with write-heavy workload on Windows

From: Craig Ringer <craig(at)2ndquadrant(dot)com>
To: MauMau <maumau307(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [9.4 bug] The database server hangs with write-heavy workload on Windows
Date: 2014-10-09 15:07:20
Message-ID: 5436A4A8.1010101@2ndquadrant.com
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On 10/09/2014 09:47 PM, MauMau wrote:
>
> I heard that the user had run 16 concurrent psql sessions which executes
> INSERT and UPDATE statements, which is a write-intensive stress test.
> He encountered the hang phenomenon twice, one of which occured several
> hours after the start of the test, and the other occured about an hour
> after the test launch.

It'd be interesting and useful to run this test on a debug build of
PostgreSQL, i.e. one compiled against the debug version of the C library
and with full debuginfo not just minimal .pdb.

How were the stacks captured - what tool?

--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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