Re: [PATCH] Using mimalloc to improve performance and reduce memory allocation lock contention

On Mon, 25 Mar 2024 at 01:42, Adrian Grucza <adrian(dot)grucza(at)iress(dot)com> wrote:

> Hi,
>
> We have a multi-threaded Windows application that was experiencing delays
> due to high lock contention in memory allocations from the PostgreSQL ODBC
> driver. We tried modifying the driver to use mimalloc
> <https://github.com/microsoft/mimalloc>, which is a memory allocator with
> better performance characteristics. After deploying this change, the delays
> due to lock contention disappeared. It has been running on thousands of our
> production deployments for 9 months without issue.
>
> I've created this pull request
> <https://github.com/postgresql-interfaces/psqlodbc/pull/6> so that others
> can benefit from this change by building the driver with the _MIMALLOC_
> symbol defined and linking to the mimalloc library.
>
> In my patch, the usage of mimalloc is off by default, so it should be safe
> to merge. But I'd like to get people's thoughts on whether it should be
> enabled by default so that people can benefit from this change without
> having to build the driver themselves.
>

Cool,

Thanks, I will have a look

Dave

>