[mythtv-commits] mythtv branch fixes/0.25 updated by stuartm. v0.25.1-45-g25dd4ce

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The branch, fixes/0.25 has been updated on the
mythtv repository by gitolite user stuartm.
       via  25dd4ce330e7b36d1c8e5e14d94a4dcdcd4cd021 (commit)
      from  ce8f9e25a627d4b164361a5328c3e013dd68476e (commit)

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- Log -----------------------------------------------------------------
commit 25dd4ce330e7b36d1c8e5e14d94a4dcdcd4cd021
Author:    Stuart Morgan <smorgan at mythtv.org> at Mon, 25 Jun 2012 11:43:28 +0100
Committer: Stuart Morgan <smorgan at mythtv.org> at Mon, 25 Jun 2012 12:03:28 +0100
URL:       http://code.mythtv.org/cgit/mythtv/commit/?id=25dd4ce330e7b36d1c8e5e14d94a4dcdcd4cd021

Move QUERY_FILETRANSFER handling to improve backend performance.
This significantly reduces the backend CPU usage for me when streaming a
recording or other file to the frontend.

Each time we send a command to the backend we perform a number of string
comparisons to find the correct handler. In the cases where that same command
is sent regularly, maybe several times a second those comparisons can stack up
to result in a high CPU load. This can be avoided by moving the most frequently
used commands to the top of the list thereby avoiding a couple of dozen or more
comparisons each time.

There may be other commands that should be moved to the top with similar
benefit.
(cherry picked from commit 529853d11587ebee0b77753272d6dcc1a5404a11)



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Summary of changes:
 mythtv/programs/mythbackend/mainserver.cpp |   16 ++++++++--------
 1 files changed, 8 insertions(+), 8 deletions(-)

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