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From: Sami Imseih <[email protected]>
To: Ilia Evdokimov <[email protected]>
Cc: Andrey Borodin <[email protected]>
Cc: Alena Rybakina <[email protected]>
Cc: Alexander Korotkov <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: Greg Sabino Mullane <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: Re: Sample rate added to pg_stat_statements
Date: Wed, 29 Jan 2025 15:55:00 -0600
Message-ID: <CAA5RZ0uKAm0sxcU40R+G9mb8g=jBC5bmj4zLmSyTz40vJEF3SA@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
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> and we've been trying to solve a non-existent problem?

Anecdotally speaking, Most users will encounter bottlenecks
due to exclusive locks on pgss hash ( dealloc and garbage collection )
more often than they will on the spinlock. The spinlock will likely
become more of an issue when you are not seeing much dealloc/gc
and running on a very large machine. So, I don't think it's a non-existent
problem, but I don't think it's the most common problem.

Regards,

Sami






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