Might be an opportunity for optimizing mmap + virtual memory architecture for database specific applications.... (should be worth at least a few papers for the academic crowd).
> On Jan 2, 2026, at 12:39 PM, [email protected] wrote: > > You may want to read this: https://db.cs.cmu.edu/mmap-cidr2022/ > > Quoth [email protected]: >> Further trying to sanitize venti, I decided to change my mventi (no isects) >> for mmap IO. >> >> At a first stage I mmap the whole venti i arena partition (current size >> 80GB, filled to 44GB). On a 64bit processor this is not a big thing, and >> replace the file operations (rwpart in part.c and readarena in arena.c) by >> memmove. >> >> As it works on amd64 FreeBSD, I can now eliminate the block cache and its >> complications (IO over block boundaries) from the source making the >> remaining source much clearer. >> >> The price is, that I have to rely on demand paging of the OS. So it is >> probably not easily portable to plan9 or 9front. >> >> Can any body give ime a hint, how to map a partition to a segment in 9front? ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tf991997f4e7bb37e-M227c416862f61d52b01bd98f Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
