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51 lines
1.2 KiB
Text
51 lines
1.2 KiB
Text
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Based on a Perl plugin by an unknown author.
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Show postgres lock statistics.
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"""
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from munin.postgres import MuninPostgresPlugin
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class MuninPostgresLocksPlugin(MuninPostgresPlugin):
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dbname_in_args = False
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title = "Postgres locks"
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args = "--base 1000"
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vlabel = "Locks"
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info = "Shows Postgresql locks"
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fields = (
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('locks', dict(
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label = "Locks",
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info = "Locks",
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type = "GAUGE",
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warning = 10,
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critical = 20,
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)),
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('exlocks', dict(
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label = "Exclusive locks",
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info = "Exclusive locks",
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type = "GAUGE",
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warning = 5,
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critical = 10,
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)),
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)
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def execute(self):
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c = self.cursor()
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c.execute("SELECT mode, COUNT(mode) FROM pg_locks GROUP BY mode ORDER BY mode")
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locks = 0
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exlocks = 0
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for row in c.fetchall():
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if 'exclusive' in row[0].lower():
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exlocks += row[1]
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locks += row[1]
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return dict(
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locks = locks,
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exlocks = exlocks,
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)
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if __name__ == "__main__":
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MuninPostgresLocksPlugin().run()
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