[AG-TECH] VIC performance

Mon Feb 21 10:09:41 CST 2005

When the windows are displayed on the TFT.. there is no problem... they are all at 24 fps.. the same machine (display one)...
The problem occurs when the windows are spreaded through the whole display.

  ----- Original Message ----- 
  From: Osland, CD (Chris) 
  To: Natalia Costas Lago 
  Cc: ag-tech 
  Sent: Monday, February 21, 2005 4:57 PM
  Subject: RE: [AG-TECH] VIC performance

  Just a thought - some network cards auto-negociate between
  10 Mbit and 100 Mbit and this can cause the net data rate to
  be closer to 10 Mbit, even when both ends are capable of 100.
  We have found that it is better to set some to 100 Mbit manually,
  rather than letting the card and router negociate it.

  Cheers

  Chris

  ____________________________________________________________________ 
  Chris Osland                                               Office tel: +44 (0) 1235 446565 
  Digital Media and Access Grid                          Medialab tel: +44 (0) 1235 446459 
  BIT Department                                     Access Grid room tel: +44 (0) 1235 445666 
  e-mail:   C.D.Osland at rl.ac.uk                                       Fax: +44 (0) 1235 445597 
  CCLRC Rutherford Appleton Laboratory (Bldg. R18) 
  Chilton, DIDCOT, Oxon OX11 0QX, UK 
  [The contents of this email are confidential and are for the use of the intended recipient only.
  If you are not the intended recipient do not take any action on it or show it to anyone else,
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    -----Original Message-----
    From: Natalia Costas Lago [mailto:natalia at cesga.es]
    Sent: 21 February 2005 15:56
    To: Osland, CD (Chris)
    Cc: ag-tech
    Subject: Re: [AG-TECH] VIC performance

    CPU is usually between 20 and 50% (VIC 1.1.3 always display around 20%.. and VIC 1.1.5 displays around 50% CPU usage)..
    I doesnt look like a resources issue to me...

      ----- Original Message ----- 
      From: Osland, CD (Chris) 
      To: Natalia Costas Lago ; ag-tech 
      Sent: Monday, February 21, 2005 4:48 PM
      Subject: RE: [AG-TECH] VIC performance

      To me that would indicate that the processor, memory
      and graphics card are NOT the problem.

      Cheers

      Chris

      ____________________________________________________________________ 
      Chris Osland                                               Office tel: +44 (0) 1235 446565 
      Digital Media and Access Grid                          Medialab tel: +44 (0) 1235 446459 
      BIT Department                                     Access Grid room tel: +44 (0) 1235 445666 
      e-mail:   C.D.Osland at rl.ac.uk                                       Fax: +44 (0) 1235 445597 
      CCLRC Rutherford Appleton Laboratory (Bldg. R18) 
      Chilton, DIDCOT, Oxon OX11 0QX, UK 
      [The contents of this email are confidential and are for the use of the intended recipient only.
      If you are not the intended recipient do not take any action on it or show it to anyone else,
      but return this email to the sender and delete your copy of it.]

        -----Original Message-----
        From: owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov]On Behalf Of Natalia Costas Lago
        Sent: 21 February 2005 15:34
        To: ag-tech
        Subject: Fw: [AG-TECH] VIC performance

        forgot to cc the list :)))

        ----- Original Message ----- 
        From: Natalia Costas Lago 
        To: Robert Olson 
        Sent: Monday, February 21, 2005 4:33 PM
        Subject: Re: [AG-TECH] VIC performance

        The machine is dual P4 3Ghz with 2 GB of RAM. The videostreams are 24 fps when displayed on the TFT but, when moved to the screen the frames per second lowers. 

        The videocard is an Nvidia Quadro NVS. 
        Other node in Portugal appreciated the same effect.
        We welcome any node to test this at https://accessgrid.cesga.es:8000/Venues/default. I am restarting my node, so I will need some time to join again.

        Kind regards,
        Natalia.

          ----- Original Message ----- 
          From: Robert Olson 
          To: Natalia Costas Lago 
          Cc: ag-tech 
          Sent: Monday, February 21, 2005 4:23 PM
          Subject: Re: [AG-TECH] VIC performance

          One way to tell what is going on is to mute all of the video streams. when muted, all vic is doing is parsing the packet streams, and not decoding the h261 (as I recall anyway). It is definitely not rendering them. If you still see frame loss with streams muted, it is most likely the network at fault.

          You can also bring up the CPU monitor; if you are seeing 100% CPU with the video streams being displayed, that's a clue that the computer is not keeping up.

          --bob

          On Feb 21, 2005, at 8:45 AM, Natalia Costas Lago wrote:

            Hi everybody,

            I have quite a huge problem. VIC is performing in a strange way, I have 13 windows on my display and each videostream has been reduced its fps rate. It seems like VIC discarded frames due to performance issues or something like that.

            Any help about this will be greatly appreciated.

            Kind regards,

            Natalia.

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