RE: [Xen-users] big latency, packet losses with HVM guests

["Tomasz Chmielewski" <mangoo@xxxxxxxx>]

> You may find that if you can run one CPU for Dom0 and another for DomU
> (say in a dual core system), you may get better performance than if you
> run both CPU's for both Dom0 and DomU.

One CPU of dom0 should be enough.
How can I start dom0 on just one CPU? Some option passed via grub maybe?

Because setting "(dom0-cpus 1)" in xend-config.sxp doesn't seem to work:

# xm dmesg|grep CPU
(XEN) Initializing CPU#0
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: L2 cache: 2048K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 0
(XEN) Intel machine check reporting enabled on CPU#0.
(XEN) CPU0: Intel(R) Xeon(R) CPU            3050  @ 2.13GHz stepping 06
(XEN) Initializing CPU#1
(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K
(XEN) CPU: L2 cache: 2048K
(XEN) CPU: Physical Processor ID: 0
(XEN) CPU: Processor Core ID: 1
(XEN) Intel machine check reporting enabled on CPU#1.
(XEN) CPU1: Intel(R) Xeon(R) CPU            3050  @ 2.13GHz stepping 06
(XEN) checking TSC synchronization across 2 CPUs: passed.
(XEN) Brought up 2 CPUs
(XEN) Dom0 has maximum 2 VCPUs


Or perhaps it won't work with dual-core CPUs (it's really one CPU)?



-- 
Tomasz Chmielewski
http://wpkg.org



_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users