[Xen-users] sched-sedf with multiple cpu's

[Efraim <efraimg@xxxxxxxxx>]

Hello,

I have two questions about cpu scheduler with Xen.

I'm running xen 3.0.2 in a server with 4 amd 64 bit cpu's.

I have several virtual servers in it and I'm using sedf scheduler.

 

The first question is what is the exact meaning of Period(ms) and Slice(ms) and how can I calculate it for my processors.

 

Second question is how can I put different weights per processor? I have running 1 virtual server in 1 processor, the second in two processors and two others in 1 single processor.

You can see the details.

 

# xm sched-sedf

Name                              ID Period(ms) Slice(ms) Lat(ms) Extra Weight
Domain-0                           0      20.0      15.0     0.0      1      0
xm5                                5     100.0       0.0     0.0      1      0
xm6                                6     100.0       0.0     0.0      1      0
xm4                                4     100.0       0.0     0.0      1      0
xm3                                3     100.0       0.0     0.0      1      0
# xm list
Name                              ID Mem(MiB) VCPUs State  Time(s)
Domain-0                           0     2631     1 r-----   627.4
xm5                                5     1000     1 -b----   152.3
xm6                                6     1000     1 ------     5.8
xm4                                4     1000     1 -b----  1419.8
xm3                                3     2000     2 -b----    65.1
 

Thanks.

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