From owner-freebsd-bugs@freebsd.org Wed Sep 14 10:28:39 2016 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CD9DABD9359 for ; Wed, 14 Sep 2016 10:28:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A37AB16F5 for ; Wed, 14 Sep 2016 10:28:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u8EASdRP065850 for ; Wed, 14 Sep 2016 10:28:39 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 212681] I/O is slow for FreeBSD DOMu on XenServer Date: Wed, 14 Sep 2016 10:28:39 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 10.3-RELEASE X-Bugzilla-Keywords: performance X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rainer@ultra-secure.de X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status keywords bug_severity priority component assigned_to reporter cc Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Sep 2016 10:28:39 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212681 Bug ID: 212681 Summary: I/O is slow for FreeBSD DOMu on XenServer Product: Base System Version: 10.3-RELEASE Hardware: amd64 OS: Any Status: New Keywords: performance Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: rainer@ultra-secure.de CC: freebsd-amd64@FreeBSD.org CC: freebsd-amd64@FreeBSD.org Hi, I run several FreeBSD VMs on Xen-Server 6.5 SP2 I/O is at least 5 times faster on Linux VMs than the FreeBSD VMs. This also with FreeBSD 11-RC2. Unfortunately, this is very noticeable in some workloads (MySQL esp.) and a= s a result, I will not be able to use FreeBSD on our cloud-setup (we run our own Apache CloudStack "cloud") except maybe for stuff like reverse-proxies etc. An easy test to spot this is with dc3dd. With dc3dd -wipe, I get over 100 MB/s in a Linux-VM, and maybe 20 in a Free= BSD VM. Tools etc. are installed, NICs show up as "xn", drives show up as "ada", for what it's worth. I've already posted in the freebsd-xen mailing list, but nobody used Xen-Se= rver there, apparently. I also posted on Citrix's forum, but nobody bothered there, either. I currently run about a 100 FreeBSD servers in various forms (physical and virtual) and if nothing changes, this will probably be the end of it :-( If anyone needs a VM to test, I can provide that, too (and access to the CloudStack GUI for that particular VM). --=20 You are receiving this mail because: You are the assignee for the bug.=