87 lines
No EOL
2 KiB
Markdown
87 lines
No EOL
2 KiB
Markdown
# Wildfly HTTP Seesions
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See articles:
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- https://www.mastertheboss.com/jbossas/jboss-cluster/jboss-monitoring-http-session-replication/
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- https://blog.arkey.fr/2020/10/27/maxrampercentage-is-not-what-i-wished-for/
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- https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/identity-manager/14-4/reference/performance-tuning/performance-tuning-for-jboss-or-wildfly.html
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# Collect metrics
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Use curl:
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```
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curl -s http://localhost:9990/metrics
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```
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wildfly_undertow_active_sessions{deployment="office-alexander-logistics.war",subdeployment="office-alexander-logistics.war",microprofile_scope="vendor"} 184.0
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## Check all active Sessions:
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```
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curl -s http://localhost:9990/metrics | grep -e "^wildfly_undertow_.*_sessions"
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```
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# Neue Memory Options:
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```yaml
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- name: JAVA_OPTS
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value: >
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-Xms5g
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-Xmx7g
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-XX:+UseG1GC
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-XX:MaxGCPauseMillis=200
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-XX:G1HeapRegionSize=16m
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-XX:InitiatingHeapOccupancyPercent=45
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-XX:+HeapDumpOnOutOfMemoryError
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-XX:HeapDumpPath=/tmp/heapdump
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-Dnashorn.args=--no-deprecation-warning
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```
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# Memory Analyse
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```
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curl -s http://localhost:9990/metrics | grep -e "^wildfly_undertow_.*_sessions"
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```
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| Zeit | Mem | Sessions |
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|-----------|:---------:|:---------:|
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| Mo 18:22 | 3947 | 31 |
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| Mo 18:34 | 3951 | 42 |
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| Mo 18:39 | 3955 | 48 |
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| Mo 18:39 | 3957 | 59 |
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| Mo 18:54 | 3983 | 62 |
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| Mo 18:54 | 4024 | 66 |
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| Mo 19:14 | 4040 | 66 |
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# Debug
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Test Heap size:
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$ curl -s http://localhost:9990/metrics | grep base_memory_usedHeap_bytes
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# HELP base_memory_usedHeap_bytes Displays the amount of used memory.
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# TYPE base_memory_usedHeap_bytes gauge
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base_memory_usedHeap_bytes 1.605052856E9
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base_memory_usedHeap_bytes 3.031116216E9
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base_memory_usedHeap_bytes 1.910524016E9
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base_memory_usedHeap_bytes 1.291952224E9 |