From: "Alberto Treviño" <alberto@byu.edu>
To: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Avoiding I/O bottlenecks between VM's
Date: Fri, 19 Sep 2008 11:26:09 -0600 [thread overview]
Message-ID: <200809191126.09889.alberto@byu.edu> (raw)
I am using KVM 69 and kernel 2.6.25.17 to host several VM's in a large
server. So far, everything has been great. Except I'm adding a Windows
Server VM that will run a SQL Server database. A few times I've noticed
that I/O becomes a bottleneck for the VM and Windows VM freezes for a few
seconds. Oh well, no biggie. Except, every so often, these I/O bottlenecks
start to affect other VM's and they freeze as well for a few seconds. I
don't really care of one VM does so much I/O that it freezes itself
temporarily. I just don't want I/O bottlenecks on one VM to affect other
VM's.
My questions are:
1. Is this a problem anyone else has experienced and has it been fixed in a
later KVM release?
2. I'm using the CFQ scheduler. Would the deadline scheduler do a better
job?
3. Any other suggestions to improve this problem?
next reply other threads:[~2008-09-19 17:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-19 17:26 Alberto Treviño [this message]
2008-09-19 18:41 ` Avoiding I/O bottlenecks between VM's Marcelo Tosatti
2008-09-19 18:53 ` Alberto Treviño
2008-09-19 19:14 ` Javier Guerra
2008-09-19 19:53 ` Marcelo Tosatti
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