From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 3 Aug 2001 21:20:56 -0700 (PDT) From: Linus Torvalds Subject: Re: [RFC][DATA] re "ongoing vm suckage" In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Ben LaHaise Cc: Daniel Phillips , Rik van Riel , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Sat, 4 Aug 2001, Ben LaHaise wrote: > On Fri, 3 Aug 2001, Linus Torvalds wrote: > > > For nicer interactive behaviour while flushing things out, the > > inode_fsync() thing should really use "write_locked_buffers()". That's a > > separate patch, though. > > Mildly better interactive performance, but absolutely horrid io > throughput. The system degrades to the point where blocks are getting > flushed to disk at ~2MB/s vs the 80MB/s its capable of. Not instrumented > since I'm trying to actually relax. That implies that we are trying to flush way too few buffers at a time and do not get any overlapping IO. Btw, how did you test this? Do you have a patch for inode_fsync() already? 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/