0003126: performance improvements

Discussion in 'Bugtracker Feed' started by MediaPortal-Bot, November 3, 2010.

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    https://forum.team-mediaportal.com/mediaportal-releases-315/various-performance-improvements-87676/ [^]

    It takes numerous seconds to enter myRecTv screen when dealing with many recordings.

    I did some detective work along with redgate ANT performance profiler.
    More specifically the various "File.Exists" call where the culprit.

    I started introducing a caching dictionary to the static helper class:

    This would help remove the expensive File.Exists calls

    What it does is simle.
    If it stumbles upon a file that isn't part of the dictionary it then does a file.exists and then adds it to the dictionary.
    The next time a call to Util.GetCoverArt is done with the same filename lookup is done, then the dictionary will be able to reply back much faster than doing disk IO.

    This has a huge performance impact when looking up coverart on many files.

    Various other optimizations were also done with the help by Inker.
    hashset's introduced where needed, LinQ, compiled regexp. etc.


    Open the issue in Mantis...


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