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

[George Lenzer <George.Lenzer@xxxxxxx>]

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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