Hyper-V CPU pollster,could not get CPU time for instance: list index out of range

looks like setting: enable_instance_metrics_collection to true makes the error msg away, looks like this is not a problem , although this error msg is not seens again, but the CPU time used always stays 0(Expected: should be Cumulative). so this issue can be linked to the following one :
https://bugs.launchpad.net/ceilometer/+bug/1250336

ceilometer sample-list -m cpu|grep a7d2b685-cf54-4726-b535-c42870cfc7be

| a7d2b685-cf54-4726-b535-c42870cfc7be | cpu | cumulative | 0.0 | ns | 2013-11-12T16:01:52 |
| a7d2b685-cf54-4726-b535-c42870cfc7be | cpu | cumulative | 0.0 | ns | 2013-11-12T16:11:51 |
| a7d2b685-cf54-4726-b535-c42870cfc7be | cpu | cumulative | 0.0 | ns | 2013-11-12T16:21:51 |

the value of cpu is always 0,: causing memory error

http://paste.openstack.org/show/51941/

2013-11-12 08:21:51.101 2548 INFO ceilometer.compute.manager [-] Polling pollster cpu
2013-11-12 08:21:51.101 2548 INFO ceilometer.compute.pollsters.cpu [-] checking instance a7d2b685-cf54-4726-b535-c42870cfc7be
2013-11-12 08:21:51.492 2548 INFO ceilometer.compute.pollsters.cpu [-] CPUTIME USAGE: {'OS-EXT-STS:task_state': None, 'addresses': {u'network1': [{u'OS-EXT-IPS-MAC:mac_addr': u'fa:16:3e:2e:4c:26', u'version': 4, u'addr': u'10.0.1.3', u'OS-EXT-IPS:type': u'fixed'}]}, 'links': [{u'href': u'http://10.1.1.151:8774/v2/0013b7b825174c869afa6a513493044b/servers/a7d2b685-cf54-4726-b535-c42870cfc7be', u'rel': u'self'}, {u'href': u'http://10.1.1.151:8774/0013b7b825174c869afa6a513493044b/servers/a7d2b685-cf54-4726-b535-c42870cfc7be', u'rel': u'bookmark'}], 'image': {u'id': u'fc79cd16-45f3-4f9c-9857-442385b7f955', u'links': [{u'href': u'http://10.1.1.151:8774/0013b7b825174c869afa6a513493044b/images/fc79cd16-45f3-4f9c-9857-442385b7f955', u'rel': u'bookmark'}], 'name': u'hyperv-image'}, 'ramdisk_id': None, 'manager': <novaclient.v1_1.servers.ServerManager object at 0x030DB1B0>, 'OS-EXT-STS:vm_state': u'active', 'OS-EXT-SRV-ATTR:instance_name': u'instance-00000004', 'OS-SRV-USG:launched_at': u'2013-11-12T15:56:26.000000', 'flavor': {'name': u'xj-flavor', u'links': [{u'href': u'http://10.1.1.151:8774/0013b7b825174c869afa6a513493044b/flavors/7', u'rel': u'bookmark'}], 'ram': 1024, 'ephemeral': 0, 'vcpus': 1, 'disk': 10, u'id': u'7'}, 'id': u'a7d2b685-cf54-4726-b535-c42870cfc7be', 'security_groups': [{u'name': u'default'}], 'user_id': u'49774643974642b5898facdea26c92c9', 'OS-DCF:diskConfig': u'MANUAL', 'accessIPv4': u'', 'accessIPv6': u'', 'progress': 0, 'OS-EXT-STS:power_state': 1, 'OS-EXT-AZ:availability_zone': u'nova', 'config_drive': u'', 'status': u'ACTIVE', 'updated': u'2013-11-12T08:56:03Z', 'hostId': u'bb9341a44b83789f578a5d5d87c260f5f7a593d50f0413c09a12a50c', 'OS-EXT-SRV-ATTR:host': u'WIN-RGVGHQAJUUB', 'OS-SRV-USG:terminated_at': None, 'kernel_id': None, 'key_name': None, 'OS-EXT-SRV-ATTR:hypervisor_hostname': u'WIN-RGVGHQAJUUB', 'name': u'hyperv8888', 'created': u'2013-11-12T08:55:53Z', 'tenant_id': u'0013b7b825174c869afa6a513493044b', 'os-extended-volumes:volumes_attached': [], '_info': {u'OS-EXT-STS:task_state': None, u'addresses': {u'network1': [{u'OS-EXT-IPS-MAC:mac_addr': u'fa:16:3e:2e:4c:26', u'version': 4, u'addr': u'10.0.1.3', u'OS-EXT-IPS:type': u'fixed'}]}, u'links': [{u'href': u'http://10.1.1.151:8774/v2/0013b7b825174c869afa6a513493044b/servers/a7d2b685-cf54-4726-b535-c42870cfc7be', u'rel': u'self'}, {u'href': u'http://10.1.1.151:8774/0013b7b825174c869afa6a513493044b/servers/a7d2b685-cf54-4726-b535-c42870cfc7be', u'rel': u'bookmark'}], u'image': {u'id': u'fc79cd16-45f3-4f9c-9857-442385b7f955', u'links': [{u'href': u'http://10.1.1.151:8774/0013b7b825174c869afa6a513493044b/images/fc79cd16-45f3-4f9c-9857-442385b7f955', u'rel': u'bookmark'}], 'name': u'hyperv-image'}, u'OS-EXT-STS:vm_state': u'active', u'OS-EXT-SRV-ATTR:instance_name': u'instance-00000004', u'OS-SRV-USG:launched_at': u'2013-11-12T15:56:26.000000', u'flavor': {'name': u'xj-...

Correct, enable_instance_metrics_collection must be enabled in Nova. It must anyway not raise an exception if not set.

We'll check right away into the "0" cumulative value that you are experiencing.

 thanks,Alessandro. BTW, is there any doc available for configuring ceilometer + hyper-v? I am now wondering whether I have missed some other configurations(in order to let ceilometer correctly collect the meters of the hyper-v node), if any.

I now know about this one: enable_instance_metrics_collection = true in nova.conf , anything else which are specific for hyper environment?

Fix proposed to branch: master
Review: https://review.openstack.org/57017

Reviewed: https://review.openstack.org/57017
Committed: http://github.com/openstack/ceilometer/commit/f15e2cc9248c99e9b5c6b371ecce4f0ed49450cc
Submitter: Jenkins
Branch: master

commit f15e2cc9248c99e9b5c6b371ecce4f0ed49450cc
Author: Claudiu Belu <email address hidden>
Date: Mon Nov 18 05:26:17 2013 -0800

    Fixes Hyper-V Inspector cpu metrics bug

    Closes-Bug: 1249959

    Change-Id: I39513648ab25d46b2639b24a94e7344954ce3aeb

Fix proposed to branch: stable/havana
Review: https://review.openstack.org/83024

Reviewed: https://review.openstack.org/83024
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=6637acdd8d9da4a2cc9e977a0837cc25483372d6
Submitter: Jenkins
Branch: stable/havana

commit 6637acdd8d9da4a2cc9e977a0837cc25483372d6
Author: Claudiu Belu <email address hidden>
Date: Mon Nov 18 05:26:17 2013 -0800

    Checks for presence of Hyper-V cpu metrics before accessing

    Adds a default value if there are no cpu metrics to be retrieved.

    Closes-Bug: 1249959
    (cherry picked from commit f15e2cc9248c99e9b5c6b371ecce4f0ed49450cc)

    Change-Id: I39513648ab25d46b2639b24a94e7344954ce3aeb