[pcp] [python-pcp] Fix a bug in pmsubsys which causes timestamp to reset. (#31)

[marcliangma8 <notifications@xxxxxxxxxx>]

Problem:
pmFreeResult is used to free memory allocated by metric_result. However, it will corrupt memory and reset self._timestamp for diff calculation. So, all subsequent collections will have huge aggregated values instead of rate between intervals.

Fix:
Use copy.deepcopy to assign values for _timestamp which will survive from pmFreeResult call.

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You can view, comment on, or merge this pull request online at:

  https://github.com/performancecopilot/pcp/pull/31

Commit Summary

• [python-pcp] Fix a bug in pmsubsys which causes timestamp to reset.

File Changes

• M src/python/pcp/pmsubsys.py (2)

Patch Links:

• https://github.com/performancecopilot/pcp/pull/31.patch
• https://github.com/performancecopilot/pcp/pull/31.diff

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