Re: [Hyperic-hq-discuss] how to monitor a short-lived process using sigar?

[Dmitrii Z. <dza...@ar...>]

Hi,

I'm picking up this thread for hyperguy. These are answers to your questions, Doug:

>> Could you share some more detail on what data you want to monitor from these short-lived processes? 

We would like to get process id and these performance metrics:

1. CPU time: Sigar.getProcCpu()
2. Resident memory: Sigar.getProcMem().getResident()


>> We could look at using mechanisms such as netlink on Linux, kqueue on BSD, etc., where we can be notified when a process is created, rather than "polling" the process list.

Thanks. We will start looking at them. We would appreciate your ideas about how to use them.

>> What is the windows-only solution you're using? 

We get process id this way:

  CreateProcess(NULL, 
        this->procData->getCmd(), 
        NULL,       // no inheritable process handle
        NULL,       // no inheritable thread handle
        TRUE,       // No handle inheritance
        creationFlags,
        NULL,       // no parent's env
        NULL,       // No starting directory.
        &startupInfo,
        &processInfo);
        
  DWORD pid = processInfo.dwProcessId;   

We get CPU time this way:

  HANDLE process;
  CpuInfo.getCPUTime(process);

We get working set (not resident memory) this way:

  PROCESS_MEMORY_COUNTERS pmc;
  GetProcessMemoryInfo(pHandle, &pmc, sizeof(pmc))
  int msize = pmc.WorkingSetSize;
  
  
-Dmitrii