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dcapwell/jvm.monitor

Last active June 22, 2020 23:47
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Java JVM monitor
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jvm.monitor
# https://docs.oracle.com/javase/8/docs/technotes/tools/unix/jstat.html
# eden (free), old (free), young GC time, # full GC, full GC time, total GC time
jstat -gc -h10 $(jps -m | grep <process name here> | awk '{print $1}') 1000 0 | awk '/^[0-9]/ {printf "%-10s %-10s %-10s %-10s %-10s %-10s\n", int((100*$6)/$5), int((100*$8)/$7), $(NF-3), $(NF-2), $(NF-1), $NF}'
# OR
pid=42
jstat -gc -h10 $pid 1000 0 | awk '/^ [0-9]/ {printf "%-10s %-10s %-10s %-10s %-10s %-10s\n", int((100*$6)/$5), int((100*$8)/$7), $(NF-3), $(NF-2), $(NF-1), $NF}'
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