Re: Synchronization Primitives

From: Markus Wanner <markus(at)bluegap(dot)ch>
To: Hannu Krosing <hannu(at)2ndQuadrant(dot)com>
Cc: "崔岩ccuiyyan(at)sina(dot)com" <ccuiyyan(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Synchronization Primitives
Date: 2008-11-13 12:30:15
Message-ID: 491C1DD7.9060201@bluegap.ch
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Hi,

Hannu Krosing wrote:
>> As I know, you can use show mutex status in MySQL to find which mutex
>> is hot. But i don't know in PostgreSQL.
>
> look at pg_locks system view

Or read about dtrace to analyze lower level locking contention:
http://www.postgresql.org/docs/8.3/static/dynamic-trace.html

Regards

Markus Wanner

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