From: "Shiao, Dennis" <[EMAIL PROTECTED]>
Subject: Odd "Lost Packets" Phenomenon

Hi,

I'm running RealServer 7 on Linux, with end users on RealPlayer 7.  My users
are behind a point-to-point T-3 circuit, right to the server farm on which
my RealServer sits.  For quite some time, there have been no problems
viewing Real video clips from the server.

Just this week, we have seen an odd phenomenon.  On 5 or more client PCs
(RealPlayer 7 on NT 4), the video and audio both become extremely distorted
while watching a live stream.  Sometimes it clears up, but other times it
continues.

The live feed is SureStream, with the highest encoding at 80.0 Kbps.  I
checked the "Bandwidth" stats in RealPlayer's "Statistics" and surely
enough, was seeing average and current rates at 80 Kbps or higher.  I then
selected the "Packets" tab and saw as high as 80% lost packets (i.e. only
20% received packets).

I checked all points on the network path and saw no packet loss.  The local
LAN (switched 100 Mbps) was fine and the T-3 routers on either end were
showing no input/output drops, no CRC errors, no nothing.  Pings showed no
end-to-end packet loss.  The RealServer was behaving fine -- lo load
average, lots of idle CPU, no errors in rmerror.log.  The network path
looked fine.  CPU usage on the local PCs were reasonable.  Any ideas as to
what is going on and what to check next?

-Dennis.



*******************************************************
The RealForum is an email discussion group focused on using RealNetworks
products. The RealForum is a place to post messages about the best methods
for creating content using RealNetworks technologies and the planning and
implementation of streaming-media web sites.  Archives of RealForum can
be found at http://realforum.real.com

If you ever want to remove yourself from this mailing list,
you can send mail to <[EMAIL PROTECTED]> with the following
command in the body of your email message:

    unsubscribe realforum

or from another account, besides the address you subscribed with:

    unsubscribe realforum <[EMAIL PROTECTED]>

Reply via email to