interpret statement log duration information

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To: "pgsql-performance@xxxxxxxxxxxxxx" <pgsql-performance@xxxxxxxxxxxxxx>
Subject: interpret statement log duration information
From: Mark Rostron <mrostron@xxxxxxx>
Date: Mon, 25 Oct 2010 15:33:47 -0700
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Acceptlanguage: en-US
Thread-index: Act0lElnGpWso/xOT+6YwgCaDccRDA==
Thread-topic: interpret statement log duration information

Hey

Turned on log_min_duration_statement today and started getting timings on sql statements (version 8.3.10).

Can anyone please tell me how to interpret the (S_nn/C_nn) information in the log line.

LOG: duration: 19817.211 ms execute S_73/C_74: ….(statement text) …..

Thanks for your time

Mr

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