Hi, @all,
Greg Stark schrieb:
Leeuw van der, Tim [EMAIL PROTECTED] writes:
I don't think EXPLAIN ANALYZE puts that much overhead on a query.
EXPLAIN ANALYZE does indeed impose a significant overhead.
Additional note:
In some rare cases, you can experience just the opposite effect, explain
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Steven Rosenstein
Sent: Sunday, February 06, 2005 8:51 PM
To: pgsql-performance@postgresql.org
Subject: [PERFORM] Can the V7.3 EXPLAIN ANALYZE be trusted?
While working on a previous question I posed to
Leeuw van der, Tim [EMAIL PROTECTED] writes:
I don't think EXPLAIN ANALYZE puts that much overhead on a query.
EXPLAIN ANALYZE does indeed impose a significant overhead. What percentage of
the time is overhead depends heavily on how much i/o the query is doing.
For queries that are primarily
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Steven Rosenstein
I don't think EXPLAIN ANALYZE puts that much overhead on a query.
I think you're being overly optimistic. The explain shows that the
Materialize subnode is being entered upwards of 32 million times:
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Re: [PERFORM] Can the V7.3 EXPLAIN
