Bug 1272082 - Can't record archives without pmcd with Python PMAPI pmgui
Can't record archives without pmcd with Python PMAPI pmgui
Product: Fedora
Classification: Fedora
Component: pcp (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Nathan Scott
Fedora Extras Quality Assurance
Depends On:
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Reported: 2015-10-15 08:47 EDT by Marko Myllynen
Modified: 2016-12-20 09:59 EST (History)
7 users (show)

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Last Closed: 2016-12-20 09:59:58 EST
Type: Bug
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Description Marko Myllynen 2015-10-15 08:47:15 EDT
Description of problem:
This one is firmly in the nice-to-have category.

pmlogger(1) can collect metrics without pmcd(1) using local DSO PMDAs with the -o option. PCPIntro(1) states that @ as host has a special meaning, it refers to PM_CONTEXT_LOCAL. However, when using pmgui.pmRecordAddHost, @ is used with the -h option and pmlogger fails to start. Since adding -h is currently hard-coded it's not possible, for example, to workaround this by adding -o with pmgui.pmRecordControl/PM_REC_SETARGS. So it would be nice to pass "-o" instead of "-h @" to pmlogger when the host is @.

For the above to be fully usable, it should probably be possible to pass -K <spec> via the API as well. While PM_REC_SETARGS already should allow this, a Python client started with -K can't query its own parameters for -K so something like pmapi.pmGetOptionSpecLocal() would probably be needed.

I'm not entirely sure would this be worth the effort but let's at least document the current situation here, just for the record.
Comment 1 Marko Myllynen 2015-12-09 11:01:28 EST
This limitation concerns only the pmgui approach, pmi can be used instead to create archives with -L.
Comment 2 Fedora End Of Life 2016-11-24 07:47:44 EST
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Comment 3 Fedora End Of Life 2016-12-20 09:59:58 EST
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