Kbase P69427: Gradually deteriorating performance of the WebSpeed Transaction Server
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
15/10/2008 |
|
Status: Verified
FACT(s) (Environment):
Progress 9.1x
WebSpeed 3.1x
SYMPTOM(s):
Gradually deteriorating performance of the WebSpeed Transaction Server
Initial response time of the WebSpeed agents is fast, but it is becoming slower with increased number of requests
Monitoring disk activity shows high I/O on the disk used for the WS agent's temporary files
Using the -t WS agent's startup parameter shows large size of the temporary sort files
Examining the index usage in the procedures shows that proper indices are used throughout the application code
CAUSE:
Large number of web object procedures executed by the WebSpeed agents
requires r-code segments to be swapped out to the session sort file (srt)
causing its growth and high disk I/O activity.
FIX:
Use the -T startup parameter for the WebSpeed agents to direct the temporary
files to the dedicated disk and utilize Progress procedure libraries as
Progress does not swap r-code segments to the session sort file unless the PROLIB Swap (-pls) startup parameter is specified.