Your Container Is Running SerialGC and Nobody Told You
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- 16 Oct 2026
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Discussion of the blog article Your Container Is Running SerialGC and Nobody Told You.
You tuned G1 flags for a week. Your pod has one CPU, which means the JVM quietly picked a single-threaded collector at startup and ignored every flag you set. Here is the OpenJDK source that made that decision.
Discussion thread — share findings, corrections and follow-ups below.