Re: [Xen-devel] scheduling weirdness

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Are all the VM workloads similar? We still have CPU scheduler
problems, in that I/O-bound VMs will be unfairly penalised. We have
someone working on fixing this over the summer.

 -- Keir

> 
> Everything freshly pulled and rebuilt sunday afternoon. (no crashes 
> yet; knock wood...)  Four VMs, all identical filesystems, created 
> identically, running the exact same job:
> 
> # xm list
> Dom  Name             Mem(MB)  CPU  State  Time(s)
> 0    Domain-0              54    0  r----    643.7
> 1    This is VM 1          63    1  -----    220.4
> 2    This is VM 2          63    0  -----    831.5
> 3    This is VM 3          63    1  -----    211.5
> 4    This is VM 4          63    0  -----    205.6
> 
> and VM2 is clearly running through its work much faster than the other 
> three VMs.  I shut everything down, rebooted, recreated and restarted 
> everything and same results.
> 
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