mythbuntu-bugs team mailing list archive

[Roy Gilby <786864@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

MythBuntu 11.04 running as a standalone MythTV backend server on an
Intel i7 CPU with 4 Gb RAM and about 6 Tb of disk space.

When Mythcommflag runs, the server seems to become CPU bound with
multiple CPU cores running at 100%.  Performance of the backend
mythbuntu server declines to the state where the server is unable to
serve up recordings to the front end mythbuntu media centre at the same
time that mythcommflag is running.  When this problem is occurring on
the MythBuntu backend, the frontend Mythbuntu PC usually fails with a
"No uPNP" error when it tries to connect to the MythBuntu backend
server.  This backend/frontend combination has worked OK on the same
hardware for MythBuntu 10.04, and 10.10.  It's only 11.04 where this
problem has become apparent.

At times there are three (3) or more mythcommflag processes running
concurrently on the backend, when only a single recording has been made
that day.  Those three or more processes cause three or more of the
eight CPU cores to go to 100%, whilst the remaining CPU cores will be
idle or near idle.

I'm happy to provide copies of whatever log files you might require.
Same if you want me to run any diagnostics or try any config changes for
you in relation to this potential bug.  I'm happy to oblige......

Hopefully, I haven't done (or omitted to do) something when I've set
this system up.

Regards,

Roy

** Affects: mythbuntu
     Importance: Undecided
         Status: New


** Tags: mythcommflag

-- 
You received this bug notification because you are a member of Mythbuntu
Bug Team, which is subscribed to Mythbuntu.
https://bugs.launchpad.net/bugs/786864

Title:
  mythcommflag causes 100% CPU Usage

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New

Bug description:
  MythBuntu 11.04 running as a standalone MythTV backend server on an
  Intel i7 CPU with 4 Gb RAM and about 6 Tb of disk space.

  When Mythcommflag runs, the server seems to become CPU bound with
  multiple CPU cores running at 100%.  Performance of the backend
  mythbuntu server declines to the state where the server is unable to
  serve up recordings to the front end mythbuntu media centre at the
  same time that mythcommflag is running.  When this problem is
  occurring on the MythBuntu backend, the frontend Mythbuntu PC usually
  fails with a "No uPNP" error when it tries to connect to the MythBuntu
  backend server.  This backend/frontend combination has worked OK on
  the same hardware for MythBuntu 10.04, and 10.10.  It's only 11.04
  where this problem has become apparent.

  At times there are three (3) or more mythcommflag processes running
  concurrently on the backend, when only a single recording has been
  made that day.  Those three or more processes cause three or more of
  the eight CPU cores to go to 100%, whilst the remaining CPU cores will
  be idle or near idle.

  I'm happy to provide copies of whatever log files you might require.
  Same if you want me to run any diagnostics or try any config changes
  for you in relation to this potential bug.  I'm happy to oblige......

  Hopefully, I haven't done (or omitted to do) something when I've set
  this system up.

  Regards,

  Roy