Finisar Surveyor - Manual (Page 241)

10-37
Expert Features
Application Layer
10
Slow Server Response
Counter
Slow Server Response is a counter of server responses that exceed a threshold. A
count of all Slow Server Responses displays in the
Overview counters of Expert
View.
Expert Symptom
Slow Server Response events are automatically logged as expert symptoms. The
Symptom Summary field provides information about the type of application server,
the time taken for the server to respond, and the threshold value. For example:
Slow SMTP server response=1258 ms (> 1000 ms)
The threshold value for this symptom can be changed. The default value is 200
milliseconds.
This symptom applies to text-based application protocol servers such as FTP,
SMTP, NNTP, and POP3. The symptom is recorded whenever the server response
exceeds the threshold for a client request. For slow responses to initial log on
(server ready message), see the Slow Connect Response symptom.
Diagnostic Details
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Problem Description:
A response from the server has taken longer than the threshold value to reach the sender.
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Probable Cause(s):
1. The server was very busy.
2. The server is overloaded.
3. The path to the sender from the receiver has long delays.
4. There may be an overloaded switch or router in the path.
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Recommended Action(s):
1. Upgrade the server’s CPU and /or memory.
2. Reduce the number of connections to the server.
3. Load balance your network.