Taoufik Garbi wrote:
Hello,
anybody could help me with the following issue please.
when many sunrays are connected, it could happen that some of them loose their sessions suddenly, but the processes still running on the server!
I assume you mean the desktop session processes. That's normal when a
Sun Ray disconnects - the nature of Sun Ray thin clients is that they
can connect and disconnect from their session without killing the
desktop session processes.
So your problem is simply that your Sun Rays are disconnecting
unexpectedly. How many Sun Rays and servers do you have deployed? Can
you give hardware details regarding your servers? What type, how much
memory, # and type of CPUs?
This can happen for a couple of reasons:
1Your server is heavily oversubscribed, and the SRSS utauthd daemon
can't issue heartbeats in a timely manner, causing the Sun Rays to time
out and attempt to reconnect.
1A This can happen sometimes if the SRDS datastore has become poorly
indexed over time due to lots of data deletion operations. Do you
frequently delete token registrations either through utuser -d or the
Admin GUI?
1B This can also happen when you simply have underprovisioned your
hardware, and it's swapping heavily. What does your system load look
like at such times?
2 You have a network problem which is dropping a lot of packets. Have
you tried running utcapture to measure packet loss?
-Bob
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