[AMBARI-24463] Heatmaps:Specific calculation methods for Host Memory Used and Host CPU Wait IO are not correct

• Type: Bug
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: trunk
• Labels: pull-request-available
• Assignee: wangjianfei
• Reporter: wangjianfei
• Created: 13/Aug/18 11:00
• Updated: 06/Jan/23 15:11

Description

1.Host Memory Used calculation method : ((mem_total - mem_free - mem_cached)/mem_total)*100
The value of mem_free was collected by psutil.virtual_memory() method in host_info.py file and it correspond to 'available' in psutil.virtual_memory() results.Actually,the available = free + buffers + cached.So,the Host Memory Used calculation method should be ((mem_total - mem_free)/mem_total)*100

2.Host CPU Wait IO was collected by psutil.cpu_times_percent() method in host_info.py.It has been converted to percentage.So,we should use ${cpu_wio} instead of ${cpu_wio*100} as its value in widgets.json.

Issue Links

• links to: GitHub PR#2044
• links to: GitHub Pull Request #2044