We are currently managin a GIS web application running on mapguide server 2.5 installed over a Windows Server instance with 22 cores running at 2.6 Ghz and 24Gb of ram.
We are currently serving a maximum of about 50-60 users. The data for the various map layers are stored over a PostgreSQL DB instance running on the same server. Currently we are serving from the same mgserver instance 3 different web server applications (running over Tomcat 7) and about 10 different maps with approximately 50 layers each. We are experiencing severe performance issues. Even just retrieving a map from the web browser can take a time variable from 8 to 40 seconds. Unfortunately this is unacceptable as users need to work all day long with this system and such a delay severely reduces their productivity. Monitoring the system resources we noticed that neither the ram nor the CPU usage is maxed out. During the moments of maximum stress mgserver.exe consumes about 50% of cpu (out of a total of about 70% of cpu usage) with about 254 threads attached (but only a small bunch of them are actually consuming notable cpu resources, in the order of 3-4%). We have tried to change some of the parameters of serverconfig.ini and webclient.ini, in particular increasing the following values: --------------------------- serverconfig.ini --------------------------- *Admin connections: MaxConnections = 40 ThreadPoolSize = 40 *Client connections: MaxConnections = 120 ThreadPoolSize = 120 *Site connections: MaxConnections = 80 ThreadPoolSize = 80 We have also tried unsuccessfully to use half these values, similar to the 1:3:2 ratio per core suggested on some web pages, however the response times of the server remained slow and the cpu usage is still high but not maxed out. Furthermore, from the performance.log it seems that the cache size being used is 6 out of a maximum of 100 so we excluded that bottleneck. Also the number of concurrent sessions is about 110 out of 200 so even this does not seem to be the cause of the slow performances. It seems as if mapguide is spawning threads that, for some unknown reason, are not fully using the avilable cpu resources. Do you have ideas? What can we do to debug the problem? Thank you. -- Sent from: http://osgeo-org.1560.x6.nabble.com/MapGuide-Users-f4182607.html _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapguide-users
