Errors while tryng to analyze the gc.log

[reisub83]

$python gc_log_visualizer.py gc.log

$python gc_log_visualizer.py gc.log
File "gc_log_visualizer.py", line 396
except (ValueError, AttributeError), e:
^
SyntaxError: invalid syntax

$./regionsize_vs_objectsize.sh gc.log

0 humongous objects referenced in gc.log
awk: cmd. line:1: (FILENAME=- FNR=1) fatal: division by zero attempted
% would not be humongous with a 2mb g1 region size
awk: cmd. line:1: (FILENAME=- FNR=1) fatal: division by zero attempted
% would not be humongous with a 4mb g1 region size
awk: cmd. line:1: (FILENAME=- FNR=1) fatal: division by zero attempted
% would not be humongous with a 8mb g1 region size
awk: cmd. line:1: (FILENAME=- FNR=1) fatal: division by zero attempted
% would not be humongous with a 16mb g1 region size
awk: cmd. line:1: (FILENAME=- FNR=1) fatal: division by zero attempted
% would not be humongous with a 32mb g1 region size

the gc.log:

OpenJDK 64-Bit Server VM (25.262-b10) for linux-amd64 JRE (1.8.0_262-b10), built on Jul 15 2020 11:09:38 by "jenkins" with gcc 4.8.2 20140120 (Red Hat 4.8.2-15)
Memory: 4k page, physical 12302164k(10814736k free), swap 4214780k(4214780k free)
CommandLine flags: -XX:CompressedClassSpaceSize=528482304 -XX:ErrorFile=/opt/app/logs/hs_err_pid%p.log -XX:+ExplicitGCInvokesConcurrent -XX:GCLogFileSize=52428800 -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/opt/app/logs -XX:InitialHeapSize=67108864 -XX:+ManagementServer -XX:MaxGCPauseMillis=200 -XX:MaxHeapSize=4294967296 -XX:MaxMetaspaceSize=536870912 -XX:NumberOfGCLogFiles=10 -XX:+ParallelRefProcEnabled -XX:+PrintAdaptiveSizePolicy -XX:+PrintGC -XX:+PrintGCApplicationStoppedTime -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:+UseG1GC -XX:+UseGCLogFileRotation -XX:+UseStringDeduplication
0.011: [G1Ergonomics (Heap Sizing) expand the heap, requested expansion amount: 67108864 bytes, attempted expansion amount: 67108864 bytes]
{Heap before GC invocations=0 (full 0):
garbage-first heap total 65536K, used 14336K [0x00000006e0800000, 0x00000006e0900200, 0x00000007e0800000)
region size 1024K, 14 young (14336K), 0 survivors (0K)
Metaspace used 8991K, capacity 9164K, committed 9344K, reserved 1056768K
class space used 1268K, capacity 1296K, committed 1408K, reserved 1048576K
2022-04-01T17:09:23.431+0200: 0,834: [GC pause (G1 Evacuation Pause) (young) 0,834: [G1Ergonomics (CSet Construction) start choosing CSet, _pending_cards: 0, predicted base time: 10,00 ms, remaining time: 190,00 ms, target pause time: 200,00 ms]
0,834: [G1Ergonomics (CSet Construction) add young regions to CSet, eden: 14 regions, survivors: 0 regions, predicted young region time: 356,52 ms]
0,834: [G1Ergonomics (CSet Construction) finish choosing CSet, eden: 14 regions, survivors: 0 regions, old: 0 regions, predicted pause time: 366,52 ms, target pause time: 200,00 ms]
, 0,0133389 secs]
[Parallel Time: 9,3 ms, GC Workers: 4]
[GC Worker Start (ms): Min: 833,6, Avg: 839,6, Max: 841,7, Diff: 8,1]
[Ext Root Scanning (ms): Min: 0,0, Avg: 0,7, Max: 2,7, Diff: 2,7, Sum: 2,7]
[Update RS (ms): Min: 0,0, Avg: 0,0, Max: 0,0, Diff: 0,0, Sum: 0,0]
[Processed Buffers: Min: 0, Avg: 0,0, Max: 0, Diff: 0, Sum: 0]
[Scan RS (ms): Min: 0,0, Avg: 0,0, Max: 0,0, Diff: 0,0, Sum: 0,0]
[Code Root Scanning (ms): Min: 0,0, Avg: 0,0, Max: 0,0, Diff: 0,0, Sum: 0,0]
[Object Copy (ms): Min: 0,0, Avg: 1,2, Max: 4,9, Diff: 4,9, Sum: 4,9]
[Termination (ms): Min: 0,0, Avg: 0,5, Max: 1,4, Diff: 1,4, Sum: 1,9]
[Termination Attempts: Min: 1, Avg: 1,0, Max: 1, Diff: 0, Sum: 4]
[GC Worker Other (ms): Min: 0,0, Avg: 0,0, Max: 0,0, Diff: 0,0, Sum: 0,1]
[GC Worker Total (ms): Min: 0,0, Avg: 2,4, Max: 9,1, Diff: 9,1, Sum: 9,6]
[GC Worker End (ms): Min: 841,8, Avg: 842,0, Max: 842,7, Diff: 0,9]
[Code Root Fixup: 0,0 ms]
[Code Root Purge: 0,0 ms]
[String Dedup Fixup: 0,3 ms, GC Workers: 4]
[Queue Fixup (ms): Min: 0,0, Avg: 0,0, Max: 0,0, Diff: 0,0, Sum: 0,0]
[Table Fixup (ms): Min: 0,0, Avg: 0,0, Max: 0,2, Diff: 0,2, Sum: 0,2]
[Clear CT: 0,2 ms]
[Other: 3,5 ms]
[Choose CSet: 0,0 ms]
[Ref Proc: 2,9 ms]
[Ref Enq: 0,2 ms]
[Redirty Cards: 0,3 ms]
[Humongous Register: 0,0 ms]
[Humongous Reclaim: 0,0 ms]
[Free CSet: 0,0 ms]
[Eden: 14336,0K(14336,0K)->0,0B(22528,0K) Survivors: 0,0B->2048,0K Heap: 14336,0K(65536,0K)->1706,2K(65536,0K)]
Heap after GC invocations=1 (full 0):
garbage-first heap total 65536K, used 1706K [0x00000006e0800000, 0x00000006e0900200, 0x00000007e0800000)
region size 1024K, 2 young (2048K), 2 survivors (2048K)
Metaspace used 8991K, capacity 9164K, committed 9344K, reserved 1056768K
class space used 1268K, capacity 1296K, committed 1408K, reserved 1048576K
}
[Times: user=0,02 sys=0,00, real=0,01 secs]
2022-04-01T17:09:23.444+0200: 0,847: Total time for which application threads were stopped: 0,0136800 seconds, Stopping threads took: 0,0000574 seconds