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1 parent 06d9025 commit 8eaa130Copy full SHA for 8eaa130
README.md
@@ -18,6 +18,10 @@ The module must be loaded by adding `pg_wait_sampling` to
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shared memory and launches background worker. This means that a server restart
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is needed to add or remove the module.
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+When used with `pg_stat_statements` it is recommended to put `pg_stat_statements`
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+before `pg_wait_sampling` in `shared_preload_libraries` so queryIds of
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+utility statements are not rewritten by the former.
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+
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When `pg_wait_sampling` is enabled, it collects two kinds of statistics.
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* History of waits events. It's implemented as in-memory ring buffer where
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