Hi all ! We are making our first steps under Xen. We are working under Suse, and we successfully installed 4 virtual machines on a Core2Duo T7200. We have some special performance needs, so the first thing we tried is to share, on different configuration, CPU usage. To "touch" the results, we simply run nbench [1] The problem is that we always have the same final result, even in the following configurations : - nbench running only on Dom0 - nbench running on 4 VM, each one has 1 VCPU (each VM is "any cpu") - nbench running on 4 VM, each one has 1 VCPU (first VM in assigned on CPU 0, the 3 others on CPU 1) - nbench running on 4 VM, the first one has 10 VCPU, the other one have 1 VCPU (each VM is "any cpu") We really are getting crasy !!! Did we miss something ? How to be sure to share correctly CPU consumtion ? Thank you very much, Regards, gUI [1] http://www.tux.org/~mayer/linux/bmark.html -- Pour la santé de votre ordinateur, préférez les logiciels libres. Lire son mail : http://www.mozilla-europe.org/fr/products/thunderbird/ Browser le web : http://www.mozilla-europe.org/fr/products/firefox/ Suite bureautique : http://fr.openoffice.org/ _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
----- "Guillaume Betous" <guillaume.betous@gmail.com> wrote:> Hi all ! > > We are making our first steps under Xen. We are working under Suse, > and we successfully installed 4 virtual machines on a Core2Duo T7200. > > We have some special performance needs, so the first thing we tried > is > to share, on different configuration, CPU usage. > > To "touch" the results, we simply run nbench [1] > > The problem is that we always have the same final result, even in the > following configurations : > - nbench running only on Dom0 > - nbench running on 4 VM, each one has 1 VCPU (each VM is "any cpu") > - nbench running on 4 VM, each one has 1 VCPU (first VM in assigned > on > CPU 0, the 3 others on CPU 1) > - nbench running on 4 VM, the first one has 10 VCPU, the other one > have 1 VCPU (each VM is "any cpu") > > We really are getting crasy !!! Did we miss something ? How to be > sure > to share correctly CPU consumtion ? > > Thank you very much, > > Regards, > > gUI > > [1] http://www.tux.org/~mayer/linux/bmark.htmlWhat version of Xen are you using as I believe there are differences between 3.1 and 3.2. Regards, -- --[ UxBoD ]-- // PGP Key: "curl -s http://www.splatnix.net/uxbod.asc | gpg --import" // Fingerprint: F57A 0CBD DD19 79E9 1FCC A612 CB36 D89D 2C5A 3A84 // Keyserver: www.keyserver.net Key-ID: 0x2C5A3A84 // Phone: +44 845 869 2749 SIP Phone: uxbod@sip.splatnix.net -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Do you agree that your test tool could be your bottleneck?
Cheers,
Marcelo
Em 27/03/2008, às 11:16, Guillaume Betous escreveu:> Hi all !
>
> We are making our first steps under Xen. We are working under Suse,
> and we successfully installed 4 virtual machines on a Core2Duo T7200.
>
> We have some special performance needs, so the first thing we tried is
> to share, on different configuration, CPU usage.
>
> To "touch" the results, we simply run nbench [1]
>
> The problem is that we always have the same final result, even in the
> following configurations :
> - nbench running only on Dom0
> - nbench running on 4 VM, each one has 1 VCPU (each VM is "any
cpu")
> - nbench running on 4 VM, each one has 1 VCPU (first VM in assigned on
> CPU 0, the 3 others on CPU 1)
> - nbench running on 4 VM, the first one has 10 VCPU, the other one
> have 1 VCPU (each VM is "any cpu")
>
> We really are getting crasy !!! Did we miss something ? How to be sure
> to share correctly CPU consumtion ?
>
> Thank you very much,
>
> Regards,
>
> gUI
>
> [1] http://www.tux.org/~mayer/linux/bmark.html
>
> --
> Pour la santé de votre ordinateur, préférez les logiciels libres.
> Lire son mail : http://www.mozilla-europe.org/fr/products/thunderbird/
> Browser le web : http://www.mozilla-europe.org/fr/products/firefox/
> Suite bureautique : http://fr.openoffice.org/
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
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