Is there a good reason why physical memory pages released by madvise(...,MADV_FREE) get handled by vm_page_dontneed()?
vm_page_dontneed() leaves page that are already in the inactive queue where they are, and otherwise distributes pages between the active queue, and the inactive queue's tail and head in the ratio 1:3:28. That seems reasonable for MADV_DONTNEED, but MADV_FREE pages are from freed dynamic memory, so passing them to vm_page_dontneed() leads to wasted pages building-up in the active and inactive queues. Wouldn't it make more sense to move all eligible MADV_FREE pages to the head of the inactive queue? _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
