Re: Does btrfs on Linux have a negative performance impact for PostgreSQL 13?

On 4/24/21 9:02 PM, Christophe Pettus wrote:
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>> On Apr 24, 2021, at 11:27, Simon Connah <simon(dot)n(dot)connah(at)protonmail(dot)com> wrote:
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>> I'm curious, really. I use btrfs as my filesystem on my home systems and am setting up a server as I near releasing my project. I planned to use btrfs on the server, but it got me thinking about PostgreSQL 13. Does anyone know if it would have a major performance impact?
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> This is a few years old, but Tomas Vondra did a presentation comparing major Linux file systems for PostgreSQL:
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> https://www.slideshare.net/fuzzycz/postgresql-on-ext4-xfs-btrfs-and-zfs
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That talk was ages ago, though. The general conclusions may be still
valid, but maybe btrfs improved a lot - I haven't done any testing since
then. Not sure about durability, but there are companies using btrfs so
perhaps it's fine - not sure.

Arguably, a lot of this also depends on the exact workload - the issues
I saw with btrfs were with OLTP stress test, it could have performed
much better with other workloads.

regards
Tomas