pitrou commented on issue #48061: URL: https://github.com/apache/arrow/issues/48061#issuecomment-3511000189
Also, the explanation is that mimalloc initialize reserves 1GiB of virtual memory for its arenas on 64-bit platforms. This can be tweaked using [`mi_option_arena_reserve `](https://microsoft.github.io/mimalloc/group__options.html#ggafebf7ed116adb38ae5218bc3ce06884cab1c88e23ae290bbeec824038a97959de). For example, if you set the environment variable `mimalloc_arena_reserve=512M` and run your snippet again, you'll see that 512 MiB of virtual memory is reserved. And again, this is only about virtual memory, not physical memory, AFAICT. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
