From owner-freebsd-hackers Thu Apr 22 10:57:42 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from noc.demon.net (server.noc.demon.net [193.195.224.4]) by hub.freebsd.org (Postfix) with ESMTP id 9B8B514F0C for ; Thu, 22 Apr 1999 10:57:37 -0700 (PDT) (envelope-from fanf@demon.net) Received: by noc.demon.net; id SAA01741; Thu, 22 Apr 1999 18:55:05 +0100 (BST) Received: from fanf.noc.demon.net(195.11.55.83) by inside.noc.demon.net via smap (3.2) id xma001723; Thu, 22 Apr 99 18:54:53 +0100 Received: from fanf by fanf.noc.demon.net with local (Exim 1.73 #2) id 10aNgZ-0002kq-00; Thu, 22 Apr 1999 18:54:51 +0100 To: hackers@freebsd.org From: Tony Finch Subject: Re: Matthew Dillon's patch to VMIO directories In-Reply-To: <371F30F5.2B56818F@pobox.com> References: Message-Id: Date: Thu, 22 Apr 1999 18:54:52 +0100 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Niall Smart wrote: >> The first time I run find command, the time elapsed is 30 seconds, >> comparable to the kernel without patch. The second time I run find >> command, the time elapsed is only 2 seconds. And if I interprete the >> output of time correctly, the first time we did 2284 I/O read, 0 I/O >> write. The second time we did 0 I/O read, 259 I/O write. > >Would it be correct to attribute the writes due to paging >caused by the memory used to cache directory entries, or >is this more likely to be noise? atime? but why didn't that happen during the first run? Tony. -- f.a.n.finch dot@dotat.at fanf@demon.net Arthur: "Oh, that sounds better, have you worked out the controls?" Ford: "No, we just stopped playing with them." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message