Issue 462 in psutil: Cache processes informations

[psu...@googlecode.com]

Status: New
Owner: ----
Labels: Type-Enhancement Priority-Medium

New issue 462 by nicolash...@gmail.com: Cache processes informations
http://code.google.com/p/psutil/issues/detail?id=462

Proposal

In the Process class, the return of the cmdline function is not cached. Is
it possible to cache it ? Does a command line can change during the process
execution ?

Thk in advance





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[psu...@googlecode.com]

Comment #1 on issue 462 by g.rodola: Cache processes informations
http://code.google.com/p/psutil/issues/detail?id=462

Yes it can change (I also wasn't aware), see issue 331.
Perhaps we can investigate whether this is also true on Windows though.

[psu...@googlecode.com]

Comment #2 on issue 462 by nicolash...@gmail.com: Cache processes
informations
http://code.google.com/p/psutil/issues/detail?id=462

Sorry, i did not see the issue 331. I understand why the cmdline is not
cached. Netherless, I just try to see if i can reduce the CPU consumption
of Glances (http://github.com/nicolargo/glances). Compare to stop, it take
arround 10x CPU.

If you have any idea to reduce it...

Thk for your answer !

[psu...@googlecode.com]

Comment #3 on issue 462 by g.rodola: Cache processes informations
http://code.google.com/p/psutil/issues/detail?id=462

Sure I know glances (very nice tool).
What platform are you talking about? Linux?
If it takes too much I think it's fine if you cache the cmdline yourself.
After all it's not something which should change that often.
Same for uids, gids, terminal and possibly others.
You might decide to cache those metrics and, say, update them every 10 secs
or something.

[psu...@googlecode.com]

Comment #4 on issue 462 by nicolash...@gmail.com: Cache processes
informations
http://code.google.com/p/psutil/issues/detail?id=462

Ok i will try to make some benchs. Thk for support.

[psu...@googlecode.com]

Comment #5 on issue 462 by g.rodola: Cache processes informations
http://code.google.com/p/psutil/issues/detail?id=462

psutil has been migrated from Google Code to Github (see:
http://grodola.blogspot.com/2014/05/goodbye-google-code-im-moving-to-github.html).
Please do NOT reply here but use this instead:
https://github.com/giampaolo/psutil/issues/462