Joshua West
2008-Jul-17 20:47 UTC
[Xen-users] Hypervisor Memory Limitations on 64-bit Architecture?
Hey all, I''m wondering if anybody could shed some light on this subject. Are there limitations as to how much RAM a 64-bit Hypervisor will recognize/support under the Xen 3.1.x or 3.2.x series (or the upcoming 3.3.x if anything has changed)?>From what I recall, a 32-bit Xen Hypervisor will recognize up to 16GB ofRAM and a 64-bit Xen Hypervisor will recognize up to 32GB -- but I''m not certain on if 32GB is in fact the upper limit for 64-bit Xen. Thanks. -- Joshua West Systems Engineer Brandeis University http://www.brandeis.edu _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Marco Strullato
2008-Jul-18 06:22 UTC
Re: [Xen-users] Hypervisor Memory Limitations on 64-bit Architecture?
I believe xen 32 bit has a built in limit of 12 GB of ram... Marco 2008/7/17 Joshua West <jwest@brandeis.edu>:> Hey all, > > I''m wondering if anybody could shed some light on this subject. Are > there limitations as to how much RAM a 64-bit Hypervisor will > recognize/support under the Xen 3.1.x or 3.2.x series (or the upcoming > 3.3.x if anything has changed)? > > >From what I recall, a 32-bit Xen Hypervisor will recognize up to 16GB of > RAM and a 64-bit Xen Hypervisor will recognize up to 32GB -- but I''m not > certain on if 32GB is in fact the upper limit for 64-bit Xen. > > Thanks. > > -- > Joshua West > Systems Engineer > Brandeis University > http://www.brandeis.edu > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Alain Barthe
2008-Jul-18 07:03 UTC
Re: [Xen-users] Hypervisor Memory Limitations on 64-bit Architecture?
2008/7/18 Marco Strullato <marco.strullato@gmail.com>:> I believe xen 32 bit has a built in limit of 12 GB of ram...We currently have 32 bits machines with 16GB of RAM.> > > Marco > > 2008/7/17 Joshua West <jwest@brandeis.edu>: > > Hey all, > > > > I''m wondering if anybody could shed some light on this subject. Are > > there limitations as to how much RAM a 64-bit Hypervisor will > > recognize/support under the Xen 3.1.x or 3.2.x series (or the upcoming > > 3.3.x if anything has changed)? > > > > >From what I recall, a 32-bit Xen Hypervisor will recognize up to 16GB of > > RAM and a 64-bit Xen Hypervisor will recognize up to 32GB -- but I''m not > > certain on if 32GB is in fact the upper limit for 64-bit Xen. > > > > Thanks. > > > > -- > > Joshua West > > Systems Engineer > > Brandeis University > > http://www.brandeis.edu > > > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users