From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 27 Dec 2002 12:50:25 -0800 (PST) From: Linus Torvalds Subject: Re: shared pagetable benchmarking In-Reply-To: <58520000.1041021953@[10.1.1.5]> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Dave McCracken Cc: Daniel Phillips , Andrew Morton , linux-mm@kvack.org List-ID: On Fri, 27 Dec 2002, Dave McCracken wrote: > > The other thing it does is eliminate the duplicate pte pages for shared > regions everywhere they span a complete pte page. While hugetlb can also > do this for some specialized applications, shared page tables will do it > for every shared region that's large enough. I dunno whether you consider > that important enough to qualify, but I figured I should point it out. I don't consider it important enough to qualify unless there are some real loads where it really matters. I can well imagine that such loads exist (where low-memory usage by page tables is a real problem), but I'd like to have that confirmed as a bug-report and that the sharing really does fix it. In other words, I can believe that the sharing is 2.6.x material, but considering the fundamental nature of it I want it to be a confirmed bug-fix, not a feature. Linus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/