inconsistent vcpus hours

[liaonanhai]

When I use nova cmd (nova usage-list),I get the CPU Hours 0.24,but I check the Overview page, the summary data is similar to this:
This Period's VCPU-Hours:0.12.

the nova --debug usage-list:
RESP BODY: {"tenant_usages": [{"total_memory_mb_usage": 62.18994346666666, "total_vcpus_usage": 0.24292946666666665, "start": "2014-12-08T06:25:30.623298", "tenant_id": "59f0edbed9b74743b66d645a11874739", "stop": "2015-01-05T06:25:30.927304", "server_usages": [{"instance_id": "e9412ae7-6809-4308-a9a3-9a1935004a58", "uptime": 428, "started_at": "2015-01-05T06:18:22.000000", "ended_at": null, "memory_mb": 512, "tenant_id": "59f0edbed9b74743b66d645a11874739", "state": "active", "hours": 0.12146473333333332, "vcpus": 2, "flavor": "2C512M", "local_gb": 0, "name": "demo"}], "total_hours": 0.12146473333333332, "total_local_gb_usage": 0.0}]}

Usage from 2014-12-08 to 2015-01-06:
+----------------------------------+---------+--------------+-----------+---------------+
| Tenant ID | Servers | RAM MB-Hours | CPU Hours | Disk GB-Hours |
+----------------------------------+---------+--------------+-----------+---------------+
| 59f0edbed9b74743b66d645a11874739 | 1 | 62.19 | 0.24 | 0.00 |
+----------------------------------+---------+--------------+-----------+---------------+

Maybe the horizon usage summary vcpu-hours get the data from total_hours not from total_vcpus_usage

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/145402

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/145402
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=186472f9a52abde32ae7294999100983826f1ed7
Submitter: Jenkins
Branch: master

commit 186472f9a52abde32ae7294999100983826f1ed7
Author: nanhai liao <email address hidden>
Date: Wed Jan 7 12:51:25 2015 +0800

    Fixed the inconsistent VCPU-Hours summary

    This Period's VCPU-Hours" is retrieved from
    usage.summary.vcpu_hours.However, this is not
    the actual total VCPU hours, and usage.summary.vcpus
    should be used instead.

    Change-Id: Ib65ab6048037ed2b4a1e4f510587b02a858f1f4f
    closes-bug:#1407568