My application is a typical Java web application, Java 8, using G1 GC. I have encountered a GC problem. Within 10 minutes after the application is started (when the old generation is gradually increasing), long GC often occurs, but this does not happen during the stable operation stage. The following is my GC log:

{Heap before GC invocations=43 (full 0):
 garbage-first heap   total 5242880K, used 496183K [0x00000006a7800000, 0x00000006a7a05000, 0x00000007e7800000)
  region size 2048K, 128 young (262144K), 54 survivors (110592K)
 Metaspace       used 228219K, capacity 255729K, committed 255872K, reserved 1275904K
  class space    used 24456K, capacity 29030K, committed 29056K, reserved 1048576K
2024-06-20T11:44:47.168+0800: 260.143: [GC pause (G1 Evacuation Pause) (young), 9.8956459 secs]
   [Parallel Time: 9891.3 ms, GC Workers: 4]
      [GC Worker Start (ms): Min: 260143.9, Avg: 260145.0, Max: 260147.2, Diff: 3.3]
      [Ext Root Scanning (ms): Min: 5.1, Avg: 8.8, Max: 12.5, Diff: 7.5, Sum: 35.2]
      [Update RS (ms): Min: 0.0, Avg: 12.2, Max: 16.2, Diff: 16.2, Sum: 48.6]
         [Processed Buffers: Min: 0, Avg: 39.2, Max: 69, Diff: 69, Sum: 157]
      [Scan RS (ms): Min: 0.0, Avg: 1.1, Max: 1.9, Diff: 1.8, Sum: 4.4]
      [Code Root Scanning (ms): Min: 0.0, Avg: 4.0, Max: 6.1, Diff: 6.1, Sum: 15.8]
      [Object Copy (ms): Min: 9855.0, Avg: 9863.9, Max: 9884.8, Diff: 29.8, Sum: 39455.6]
      [Termination (ms): Min: 0.0, Avg: 0.0, Max: 0.0, Diff: 0.0, Sum: 0.0]
         [Termination Attempts: Min: 1, Avg: 15.8, Max: 23, Diff: 22, Sum: 63]
      [GC Worker Other (ms): Min: 0.1, Avg: 0.1, Max: 0.1, Diff: 0.0, Sum: 0.2]
      [GC Worker Total (ms): Min: 9887.8, Avg: 9890.0, Max: 9891.1, Diff: 3.3, Sum: 39560.0]
      [GC Worker End (ms): Min: 270035.0, Avg: 270035.0, Max: 270035.0, Diff: 0.1]
   [Code Root Fixup: 1.1 ms]
   [Code Root Purge: 0.0 ms]
   [Clear CT: 0.2 ms]
   [Other: 3.0 ms]
      [Choose CSet: 0.0 ms]
      [Ref Proc: 1.1 ms]
      [Ref Enq: 0.0 ms]
      [Redirty Cards: 0.5 ms]
      [Humongous Register: 0.1 ms]
      [Humongous Reclaim: 0.0 ms]
      [Free CSet: 0.4 ms]
   [Eden: 148.0M(148.0M)->0.0B(234.0M) Survivors: 108.0M->22.0M Heap: 484.6M(5120.0M)->338.4M(5120.0M)]
Heap after GC invocations=44 (full 0):
 garbage-first heap   total 5242880K, used 346567K [0x00000006a7800000, 0x00000006a7a05000, 0x00000007e7800000)
  region size 2048K, 11 young (22528K), 11 survivors (22528K)
 Metaspace       used 228219K, capacity 255729K, committed 255872K, reserved 1275904K
  class space    used 24456K, capacity 29030K, committed 29056K, reserved 1048576K
}
 [Times: user=17.10 sys=0.90, real=9.90 secs] 

I tried increasing the SURVIVOR area, but it didn’t work. Here are my JVM parameters:

-Xmx5120m -Xms5120m -XX:MaxMetaspaceSize=400M -XX:MetaspaceSize=400M -XX:+UseG1GC -XX:SurvivorRatio=6 -Dnacos.use.endpoint.parsing.rule=false -Dnacos.use.cloud.namespace.parsing=false -XX:+PrintHeapAtGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintGCApplicationStoppedTime -XX:+PrintGCApplicationConcurrentTime -Xloggc:/tmp1/main-gc.log