Date: Wed, 14 Sep 2016 10:28:39 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-amd64@FreeBSD.org Subject: [Bug 212681] I/O is slow for FreeBSD DOMu on XenServer Message-ID: <bug-212681-6@https.bugs.freebsd.org/bugzilla/>
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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 on the CC list for the bug.=
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