| From: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
|---|---|
| To: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, David Steele <david(at)pgmasters(dot)net>, Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Michael Brown <michael(dot)brown(at)discourse(dot)org>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: should frontend tools use syncfs() ? |
| Date: | 2023-08-08 20:06:06 |
| Message-ID: | 20230808200606.GA1384393@nathanxps13 |
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| Thread: | |
| Lists: | pgsql-hackers |
I ran a couple of tests for pg_upgrade with 100k tables (created using the
script here [0]) in order to demonstrate the potential benefits of this
patch.
pg_upgrade --sync-method fsync
real 5m50.072s
user 0m10.606s
sys 0m40.298s
pg_upgrade --sync-method syncfs
real 3m44.096s
user 0m8.906s
sys 0m26.398s
pg_upgrade --no-sync
real 3m27.697s
user 0m9.056s
sys 0m26.605s
[0] https://postgr.es/m/3612876.1689443232%40sss.pgh.pa.us
--
Nathan Bossart
Amazon Web Services: https://aws.amazon.com
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