Measureing memory used by a subprocess

[Shane Geiger]

Getting the pid:



http://timgolden.me.uk/python/wmi_cookbook.html

List all running processes

import wmi
c = wmi.WMI ()
for process in c.Win32_Process ():
  print process.ProcessId, process.Name


List all running notepad processes

import wmi
c = wmi.WMI ()
for process in c.Win32_Process (name="notepad.exe"):
  print process.ProcessId, process.Name


Create and then destroy a new notepad process

import wmi
c = wmi.WMI ()
process_id, return_value = c.Win32_Process.Create 
(CommandLine="notepad.exe")
for process in c.Win32_Process (ProcessId=process_id):
  print process.ProcessId, process.Name

result = process.Terminate ()




Andrew McLean wrote:
> I want to script the benchmarking of some compression algorithms on a 
> Windows box. The algorithms are all embodied in command line 
> executables, such as gzip and bzip2. I would like to measure three things:
>
> 1. size of compressed file
> 2. elapsed time (clock or preferably CPU)
> 3. memory used
>
> The first is straightforward, as is measuring elapsed clock time. But 
> how would I get the CPU time used by a sub-process or the memory used?
>
> I'm guessing that the Windows Performance Counters may be relevant, see 
> the recipe
>
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/303339
>
> But I don't see any obvious way to get the process id of the spawned 
> subprocess.
>
> - Andrew
>   

-- 
Shane Geiger
IT Director
National Council on Economic Education
sgeiger at ncee.net  |  402-438-8958  |  http://www.ncee.net

Leading the Campaign for Economic and Financial Literacy

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