prashant kumar mishra created CLOUDSTACK-3970:
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Summary: vms with cpu=2GHz getting less weight (52) compare to vms
with cpu=1.5GHz (158)
Key: CLOUDSTACK-3970
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3970
Project: CloudStack
Issue Type: Bug
Security Level: Public (Anyone can view this level - this is the default.)
Environment: hyp:xenserver6.1
Reporter: prashant kumar mishra
Priority: Critical
Attachments: XEN_DB_MS.rar
Weight
A domain with a weight of 512 will get twice as much CPU as a domain with a
weight of 256 on a contended host. Legal weights range from 1 to 65535 and the
default is 256
--> http://wiki.xen.org/wiki/Credit_Scheduler
Steps to reproduce
===============
1-prepare a CS setup with xen6.1
2-create service offerings say
cpu15(cpu=1.5GHz,vcpu=1,ram=512),cpu2(cpu=2GHz,vcpu=1,ram=512)
3-deploy vms vm1 using cpu15 and vm2 using cpu2
4-check weight of vm on xen hypervisor using #xe vm-list params=all uuid=
|grep weight
Expected
--------------
vm1 should get less weight compare to vm2
Actual
----------
vm1(158) getting more weight than vm2(52)
details
=======
[root@Rack1Pod1Host7 ~]# xe vm-list
uuid ( RO) : 3119bbdf-9d0c-019f-e3f6-58cc20c76e37
name-label ( RW): i-2-37-VM
power-state ( RO): running
uuid ( RO) : b992ea8b-c08a-1730-3461-717f8b4f0220
name-label ( RW): r-4-VM
power-state ( RO): running
uuid ( RO) : e7d05be1-13d5-c9ed-e3dd-27ad8de4326e
name-label ( RW): v-2-VM
power-state ( RO): running
uuid ( RO) : 5650439d-7951-cdc4-a05e-52c5b108cd37
name-label ( RW): s-1-VM
power-state ( RO): running
uuid ( RO) : d36d336e-800a-4363-a248-8ded70080eae
name-label ( RW): Control domain on host: Rack1Pod1Host7
power-state ( RO): running
uuid ( RO) : ee434e8f-b912-0cb0-59e5-9c7d1d8a87a4
name-label ( RW): i-2-38-VM
power-state ( RO): running
[root@Rack1Pod1Host7 ~]# xe vm-list params=all
uuid=5650439d-7951-cdc4-a05e-52c5b108cd37 |grep weight
VCPUs-params (MRW): weight: 52; cap: 0
[root@Rack1Pod1Host7 ~]# xe vm-list params=all
uuid=ee434e8f-b912-0cb0-59e5-9c7d1d8a87a4 |grep weight
VCPUs-params (MRW): weight: 158; cap: 0
[root@Rack1Pod1Host7 ~]# xe vm-list params=all
uuid=5650439d-7951-cdc4-a05e-52c5b108cd37 |grep weight
VCPUs-params (MRW): weight: 52; cap: 0
my observation
----------------------
VM with cpu=2GHz is getting same weight as vm with cpu=500MHz
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