Linux commands: Difference between revisions

=== system CPU and memory usage  ===

CPU usage / system load average

** namespace: ROOT\CIMV2

** WQL query: {{kbd | key= SELECT LoadPercentage FROM Win32_Processor}}; No need to divid by CPU cores number for Win8

** output example: 24 ([https://msdn.microsoft.com/zh-tw/library/system.uint16(v=vs.110).aspx UInt16, 16 bit Unsigned Integer]) unit: %

** CPU usage = LoadPercentage; unit: %

** PHP function [http://php.net/manual/en/function.sys-getloadavg.php sys_getloadavg()] unit: %; '''Need''' to divid by CPU cores number

Memory usage

** namespace: ROOT\CIMV2

** WQL query: {{kbd | key= SELECT FreePhysicalMemory, TotalVisibleMemorySize FROM Win32_OperatingSystem}};

** output example: 21683460 ([https://msdn.microsoft.com/zh-tw/library/system.uint64(v=vs.110).aspx UInt64, 64 bit Unsigned Integer]) unit: KB

** memory usage = (FreePhysicalMemory * 100) / TotalVisibleMemorySize; unit: %

** command: {{kbd | key = free}}

** output example:  

</pre>

** memory usage = 7922496 / 8060416; unit: %

** command: {{kbd | key = top -l 1 | grep PhysMem:}}

** output example: PhysMem: 8017M used (1486M wired), 172M unused.