From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from atlas.CARNet.hr (zcalusic@atlas.CARNet.hr [161.53.123.163]) by kvack.org (8.8.7/8.8.7) with ESMTP id LAA16245 for ; Thu, 31 Dec 1998 11:54:05 -0500 Subject: Re: Swap File improvement. References: Reply-To: Zlatko.Calusic@CARNet.hr From: Zlatko Calusic Date: 31 Dec 1998 17:53:15 +0100 In-Reply-To: ebiederm+eric@ccr.net's message of "25 Dec 1998 14:18:50 -0600" Message-ID: <87af04l0ck.fsf@atlas.CARNet.hr> Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org To: "Eric W. Biederman" Cc: linux-mm@kvack.org, linux-kernel@vger.rutgers.edu List-ID: Eric wrote: > The following patch allows asynchronous swapping to swap files, > improving their performance immensely. > > Additionally since now all swapping goes there brw_page, the semantics are much > cleaner, and we don't need to maintain ll_rw_swap_file. Great! I tested your changes in 2.2.0-pre1 and I'm astonished with a performance change. Before, swap files (unlike swap partitions) were not usable at all, that is, speed was abysmal. With your changes swap files now perform at about 80% of swap partition performance, exactly as I was expecting. Very good work, indeed. Happy New Year to you and yours! Happy New 1999. to all the Linux hackers! -- Zlatko -- This is a majordomo managed list. To unsubscribe, send a message with the body 'unsubscribe linux-mm me@address' to: majordomo@kvack.org