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[Xen-users] Is NPTL in PV Xen Possible in RHEL5/CentOS 5 Distros?

To: Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Is NPTL in PV Xen Possible in RHEL5/CentOS 5 Distros?
From: George Lenzer <George.Lenzer@xxxxxxx>
Date: Mon, 27 Aug 2007 11:04:37 -0400
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I'm in a bit of a bind. My organization is planning to move to a new mail system and I really want this box to be up as close to 24x7 as possible. I am currently working on an HVM domain running RHEL on top of CentOS. What I'm concerned about is the issue of I/O (disk and network) since a mail system will be very busy in that way. The mail app I'm planning on running needs NPTL. When I tried a paravirtualized Fedora Core a few years back, the installer for that app said it wouldn't install since the kernel didn't have NPTL. So this led me to believe that I had to wait for HVM. Now, I'm not so sure... In my recent searches, I've seen that all that's really required is a glibc that supports NPTL and that if one runs Xen this way, you wind up with slow performance. I suspect this has something to do with the TLS lib that many Xen docs say to rename?

So has anyone made a glibc that will install on RHEL or CentOS that is Xen friendly at this point? If so, I may be in much better shape than I thought.

Thanks.


--
George Lenzer
Computer and Networking Specialist
Cleveland Public Library
Automation Department


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