pitrou commented on issue #40301: URL: https://github.com/apache/arrow/issues/40301#issuecomment-2046862382
Ok, so this is really the initial pre-sizing of the memo tables. However, the problem here is wrongly interpreting the observations. The 1+GB are not so much "allocated" than pre-reserved by the allocator (mimalloc or jemalloc). Those are empty pages are most probably not backed by physical memory until they are actually used by the application (Arrow). The only thing allocated is virtual address space, and virtual address space is virtually infinite (up to 2**48 bytes per process). The actual amount of allocated physical memory is the amount necessary for each 32-element memo table, and that is bound to be very small. -- 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]
