Get Total CPU # via WMI or T-SQL

问题

I don't want the list of all process, just a total percentage like you would see in windows taskmanager.

I will be using this information via coldfusion, but i am having all kinds of problems just trying to find a total number of current cpu usage.

I don't care if it comes from wmi or t-sql, i just want a total number for which i will be using to populate a gauge chart that via ajax will be showing my current cpu usage percentage...

Thank You...

回答1:

You can use the Win32_PerfRawData_PerfOS_Processor WMI class to get this information. In your query you would use Win32_PerfFormattedData_PerfOS_Processor.Name='_Total'. See the article ColdFusion and WMI for more information on using WMI as well as the sample vbscirpt code in this article.

回答2:

If it were me I would setup a perfmon counter on the machine in question to measure total CPU. This can be configured to write to a CSV file every couple of seconds.

You can then either have a task that writes that file to the database every minute and get CF to read that data so you can see a graph over time. Or, if you need the most recent value then just get CF to read the CSV file's last value and use that for your gauge.

Personally I store all the data in the database for all our web servers so I can see performance over time and run reports on busy or problem periods. Works great for us.

Hope that helps!

回答3:

This someone else's answer, but in T-SQL, you could use this:

  DECLARE @ts_now BIGINT
    SELECT @ts_now = cpu_ticks / CONVERT(FLOAT, ms_ticks) FROM sys.dm_os_sys_info

    SELECT top 1 record_id,
            DATEADD(ms, -1 * (@ts_now - [timestamp]), GETDATE()) AS EventTime, 
            SQLProcessUtilization,
            SystemIdle,
            100 - SystemIdle - SQLProcessUtilization AS OtherProcessUtilization,
            100 - SystemIdle AS TotalCPU
    FROM (
            SELECT 
                    record.value('(./Record/@id)[1]', 'int') AS record_id,
                    record.value('(./Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS SystemIdle,
                    record.value('(./Record/SchedulerMonitorEvent/SystemHealth/ProcessUtilization)[1]', 'int') AS SQLProcessUtilization,
                    TIMESTAMP
            FROM (
                    SELECT TIMESTAMP, CONVERT(XML, record) AS record 
                    FROM sys.dm_os_ring_buffers 
                    WHERE ring_buffer_type = N'RING_BUFFER_SCHEDULER_MONITOR'
                    AND record LIKE '% %') AS x
            ) AS y 
    ORDER BY record_id DESC

来源：https://stackoverflow.com/questions/3534868/get-total-cpu-via-wmi-or-t-sql

标签

tsql

coldfusion

wmi

cpu-usage

perfmon