From owner-freebsd-fs@FreeBSD.ORG Thu Mar 20 15:00:01 2014 Return-Path: Delivered-To: freebsd-fs@smarthost.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 9024FFCD for ; Thu, 20 Mar 2014 15:00:01 +0000 (UTC) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 7E47CF7F for ; Thu, 20 Mar 2014 15:00:01 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.8/8.14.8) with ESMTP id s2KF017D002146 for ; Thu, 20 Mar 2014 15:00:01 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.8/8.14.8/Submit) id s2KF01kA002145; Thu, 20 Mar 2014 15:00:01 GMT (envelope-from gnats) Date: Thu, 20 Mar 2014 15:00:01 GMT Message-Id: <201403201500.s2KF01kA002145@freefall.freebsd.org> To: freebsd-fs@FreeBSD.org Cc: From: Andriy Gapon Subject: Re: kern/187594: [zfs] [patch] ZFS ARC behavior problem and fix X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list Reply-To: Andriy Gapon List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Mar 2014 15:00:01 -0000 The following reply was made to PR kern/187594; it has been noted by GNATS. From: Andriy Gapon To: bug-followup@FreeBSD.org, karl@fs.denninger.net Cc: Subject: Re: kern/187594: [zfs] [patch] ZFS ARC behavior problem and fix Date: Thu, 20 Mar 2014 16:56:18 +0200 I think that you are gradually approaching a correct solution to the problem, but from quite a different angle comparing to how I would approach the problem. In fact, I think that it was this commit http://svnweb.freebsd.org/changeset/base/254304 that broke a balance between the page cache and ZFS ARC. On technical side, I see that you are still using kernel_sysctlbyname in your patches. As I've said before, this is not needed and in certain sense incorrect. -- Andriy Gapon