nicomandel / rosprofiler

The rosprofiler package

rosprofiler

Updates by Nico

• Changed node_monitor.py according to the psutil documentation

  • included correct named tuple referencing in the update function - mem_info

• Added a client.py file

  • base structure is present
  • Depends on parameters to be set elsewhere which say what to log, otherwise will log everything by default, see here

Nico TODOs:

Check with client.py whether the changes are the same noted down in there

• Units for the memory management need to be converted, see this stackoverflow

• Check the sample rates and intervals - do the values get reset each sample - yes, see profiler.py, l. 176

• Check the psutil memory documentation if we can get more conclusive values. Also check this stackoverflow for what the differences between RSS, VMS and pss are

  • Which one do we use? Depends on ISO 25023 and 25010
    • one to show the free space - for capacity
    • for the host_statistics definitely want one that will show the total used space
    • for the node_statistics want one that will show the allocated and used space

• The cpu_percent part of the node_statistics, L. 56 may be very misleading - check these and find if there is maybe an absolute value we can use - or if we have to rely on the host_statistics value to then calculate the total usage

• Create a toy example with listener / talker

• Extend classes:

  • Bw and HZ from online documentation. Check issuelog
  • Get power values consumption - For the Raspberry: Use the maximum Power consumption (which is likely limited by the USB) and multiply it with the CPU load as a proxy - arguing that heat dissipation will be the major determining factor, with equal r/w access
  • Put power monitoring into message and send over
  • Put different memory values into classes, s.a.

• Adapt the code to use the new msg type monitoring power and new memory values

• Check with ISO what is required/ what we can and want to use

Stuff from the original documentation

UPDATES:

• Changed Naming conventions accordint to this link
• Changed l. 57 of node_monitor to fit to correct memory allocations, see this link on memory_info()