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help / color / mirror / Atom feedFrom: Daniil Davydov <[email protected]>
To: Jingtang Zhang <[email protected]>
Cc: Bharath Rupireddy <[email protected]>
Cc: [email protected]
Cc: PostgreSQL-development <[email protected]>
Subject: Re: Introduce new multi insert Table AM and improve performance of various SQL commands with it for Heap AM
Date: Mon, 17 Mar 2025 11:49:45 +0700
Message-ID: <CAJDiXgjTe+kYXh7mT9iYTfyVh7takX9UsuVDi8mpYN3p8009yQ@mail.gmail.com> (raw)
In-Reply-To: <CAJDiXggcx+v7eKruvvBK-mpyf3Y3e8vgBJhcZwhkm4p6907edw@mail.gmail.com>
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<CAJDiXggcx+v7eKruvvBK-mpyf3Y3e8vgBJhcZwhkm4p6907edw@mail.gmail.com>
Hi,
Recently I took more careful measurements of the performance. I
compared three branches with each other: HEAD, Patched and Patched
with tuplestore.
Here are the results :
1)
Test case : matview creation test attached in the email from Jingtang Zhang.
10 measurements for each branch.
Result in wall clock execution time :
HEAD
30.532 +- 0.59 seconds elapsed
Patched
20.454 +- 0.114 seconds elapsed
Patched with tuplestore
19.653 +- 0.111 seconds elapsed
2)
-- init.sql
drop table test_insert;
vacuum;
checkpoint;
create table test_insert(i int, f float);
-- iowrite.sql
insert into test_insert select g, (g % 100) / 100.0 from
generate_series(1, 1000000) as g;
Test case :
pgbench -f iowrite.sql -n -j 4 -c 10 -T 40
5 measurements for each branch.
Result in tps :
HEAD
1.025 +- 0.009
Patched
2.923 +- 0.032
Patched with tuplestore
2.987 +- 0.011
P.S.
I cannot find a commitfest entry for this patch. Should we add it there?
--
Best regards,
Daniil Davydov
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Cc: [email protected], [email protected], [email protected], [email protected]
Subject: Re: Introduce new multi insert Table AM and improve performance of various SQL commands with it for Heap AM
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