title: What does "Other" mean in Java GC log?
body: <p>I have such setup</p>
  <ul>
  <li>Java 11 Corretto inside Docker running on EC2</li>
  <li>Java options: -Xms1200m -Xmx1200m -XX:+UseG1GC -Xlog:gc*</li>
  </ul>
  <p>In log I see that usually GC takes ~100-200ms, but for some timeslots, I see some weird behavior:</p>
  <p><strong>[2074.114s][info][gc,phases ] GC(39) Other: 4082.5ms</strong></p>
  <pre><code>[2074.114s][info][gc,phases ] GC(39) Pre Evacuate Collection Set: 0.0ms
  
  [2074.114s][info][gc,phases ] GC(39) Evacuate Collection Set: 161.7ms
  
  [2074.114s][info][gc,phases ] GC(39) Post Evacuate Collection Set: 0.6ms
  
  !!!!!!!!!!!!!![2074.114s][info][gc,phases ] GC(39) Other: 4082.5ms !!!!!!!!!!!!!!!!!!!!
  
  [2074.114s][info][gc,heap ] GC(39) Eden regions: 253-&gt;0(574)
  
  [2074.114s][info][gc,heap ] GC(39) Survivor regions: 49-&gt;27(38)
  
  [2074.114s][info][gc,heap ] GC(39) Old regions: 186-&gt;229
  
  [2074.114s][info][gc,heap ] GC(39) Humongous regions: 0-&gt;0
  
  [2074.114s][info][gc,metaspace ] GC(39) Metaspace: 121063K-&gt;121063K(1159168K)
  
  [2074.114s][info][gc ] GC(39) Pause Young (Normal) (G1 Evacuation Pause) 488M-&gt;256M(1200M) 4244.945ms
  
  [2074.114s][info][gc,cpu ] GC(39) User=0.20s Sys=0.03s Real=4.25s
  </code></pre>
  <p>What does this &quot;other&quot; step mean?</p>