> > Our JVM options are unchanged between 2.2 and 3.11 > For the sake of clarity, do you mean: (a) you're using the default JVM options in 3.11 and it's different to the options you had in 2.2? (b) you've copied the same JVM options you had in 2.2 to 3.11?
The distinction is important because at the moment, you need to go through a process of elimination to identify the cause. > Read throughput (rate, bytes read/range scanned, etc.) seems fairly > consistent before and after the upgrade across all nodes. > What I was trying to get at is whether the upgraded node was getting hit with more traffic compared to the other nodes since it will indicate that the longer GCs are just the symptom, not the cause. Again, it's a process of elimination. Cheers! >
