Sun Microsystems MEDIACENTER 2.1 User Manual

Page 140

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10-2

Sun MediaCenter Server Administrator’s Guide • December 1997

Underperforming stream output

Possible cause is network congestion. Use a network analyzer or your switch
vendor’s diagnostics to analyze network performance.

Note that your server is intended only for the storage and delivery of multimedia
streams. Any processes not associated with this purpose have the potential to
disrupt server output.

No video displays on client

Possible causes: Disk cables and/or network links not connected. If using ATM,
ATM switch not configured correctly. Content is stored at a bit rate different from
that at which it was encoded.

If you have SunNet Manager, do a quick dump of the

sms-vod

>

active

attribute

to confirm that there are active streams. If you do not have SunNet Manager, use

snoop

,

atmstat

, and/or switch diagnostics to check on streams. If there are

active streams, confirm that the bit rate you are using to play the stream is correct.

Note that on a correctly running server, the following processes should be
running:

If you are using an application based on the Media Stream Manager Client API,
the following process must be running:

If any of the preceding processes is not present in

ps

output, you might have to

reboot the server.

Another possible cause of this problem, for Fast Ethernet destinations, is that the
IP address and/or Ethernet address of the destination client are not recorded in a
name service accessible to the server or not in the server ’s local

/etc/hosts

and

/etc/ethers

files.

root 4 0 1 Nov 13 ? 0:00 vod_hires_timer

root 231 1 0 Nov 13 ? 0:00 vod_xor

root 232 1 0 Nov 13 ? 0:00 vod_xor

root 233 1 80 Nov 13 ? 0:13 vod_sched

root 241 1 80 Nov 13 ? 2:18 /opt/SUNWsms/msm/bin/MsmServer

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