Actually this probably isn't very important, as according to http://www.csn.ul.ie/~mel/projects/vm/guide/pdf/understand.pdf The Linux kernel (now?) has a 2Q file cache replacement policy which will cache pages that have been accessed only once in a small "A1in" cache, keeping the remainder of the cache for files that have recently been accessed twice. For a description of 2Q, see: http://www.vldb.org/conf/1994/P439.PDF.
Unfortunately, I cannot find any reference to when Linux switched to a 2Q policy. In 2006 the Linux kernel was still using a file cache replacement policy that was worse than the LRU (where as 2Q is better), see: http://nikitadanilov.blogspot.com/2006/10/previous-item.html -- Ubiquity should advise kernel to discard pages from copied files https://bugs.launchpad.net/bugs/197579 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
