[CLOUDSTACK-9900] Fix high CPU deviation seen in Zone/Cluster metrics view

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Future, 4.10.1.0, 4.9.3.0
• Security Level: Public (Anyone can view this level - this is the default.)
• Assignee: Rohit Yadav
• Reporter: Rohit Yadav
• Created: 03/May/17 08:37
• Updated: 10/Aug/17 11:28
• Resolved: 10/Aug/17 11:28

Description

High CPU deviation (100-400%) is seen in the metrics view. The regression was caused becase HostStats returns CPU usage in percentage and memory usage in bytes, while the deviation calculation method did not assume that passed values are in percentage and multiples the ratios by 100 resulting in 100x the actual values.