From owner-svn-src-all@FreeBSD.ORG Tue Jan 26 17:05:51 2010 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D30FC106566B; Tue, 26 Jan 2010 17:05:51 +0000 (UTC) (envelope-from ivoras@gmail.com) Received: from mail-fx0-f227.google.com (mail-fx0-f227.google.com [209.85.220.227]) by mx1.freebsd.org (Postfix) with ESMTP id BB6428FC1A; Tue, 26 Jan 2010 17:05:50 +0000 (UTC) Received: by fxm27 with SMTP id 27so2169079fxm.3 for ; Tue, 26 Jan 2010 09:05:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:from:date:x-google-sender-auth:message-id:subject:to:cc :content-type:content-transfer-encoding; bh=c2/c+nq4MDZFkhabz+jyNXl7u65TP1qN04rtXH7AHnA=; b=X7C2QL4q/81Zu11bW4tc+t1TfKVCnrvNX3ETYGpK9IV3mlLnyDzQaWMGZszBBtGFPu 9ka8r4mbqWTQRsSDx8i714NcpERltNlw1MsQYAi8H/mZOi1DfTpfOLD1IYKwFfOrcUZU ghBpp7yRqEiWOCcDfzaTpZGCJNFrF0QBoRnjs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:cc:content-type :content-transfer-encoding; b=SVZjRnD8ffvI+l1BZ4VwY2dOMDryY08L9FyIca5Fk6Y/e9GQ7YhbtZ5rAU36GfAIdv oUqXiH9fAO3DT7cDs/tyqAjVxAHQjzD6ib3MN4rFFUKxm+ymOc7gD9eQgivhP3mut8NF BxId21vCvncS5oAbVicXom5Ep0TqJFZz+1yFo= MIME-Version: 1.0 Sender: ivoras@gmail.com Received: by 10.216.90.74 with SMTP id d52mr3165283wef.51.1264525549323; Tue, 26 Jan 2010 09:05:49 -0800 (PST) In-Reply-To: <20100126141525.10365e5dzlk7jc4k@webmail.leidinger.net> References: <201001231842.o0NIgSa5086957@svn.freebsd.org> <201001250757.49334.jhb@freebsd.org> <20100126141525.10365e5dzlk7jc4k@webmail.leidinger.net> From: Ivan Voras Date: Tue, 26 Jan 2010 18:05:29 +0100 X-Google-Sender-Auth: c2b0d5f3d98c9549 Message-ID: <9bbcef731001260905u36436624rfcf466765eee1f6a@mail.gmail.com> To: Alexander Leidinger Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: Alan Cox , svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, John Baldwin Subject: Re: svn commit: r202894 - in head/sys/i386: i386 include X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Jan 2010 17:05:51 -0000 2010/1/26 Alexander Leidinger : > > Quoting John Baldwin (from Mon, 25 Jan 2010 07:57:49 > -0500): > >> On Saturday 23 January 2010 1:42:28 pm Alan Cox wrote: >>> >>> Author: alc >>> Date: Sat Jan 23 18:42:28 2010 >>> New Revision: 202894 >>> URL: http://svn.freebsd.org/changeset/base/202894 >>> >>> Log: >>> =C2=A0Handle a race between pmap_kextract() and pmap_promote_pde(). =C2= =A0This race >>> is >>> =C2=A0known to cause a kernel crash in ZFS on i386 when superpage promo= tion is >>> =C2=A0enabled. >>> >>> =C2=A0Tested by: =C2=A0 =C2=A0netchild >>> =C2=A0MFC after: =C2=A0 =C2=A01 week >> >> Yay! =C2=A0Should we enable pg_ps by default on i386 now? > > Data point, the i386 system where I have superpages enabled is a p4 with > currently 11 jails active. Some webservers, squid, samba, bind, postfix a= nd > a lot of portupgrades (during the last days, I'm updating a jail with a > desktop-setup inside). All jails are on ZFS. Do you have any method of comparing performance before-and-after? There was a thread on some of the mailing lists (stable@/current@?) about squid being the pessimal case for superpages.