It could be because internal queues are not directly bounded in 1.0.0. The queue is size indirectly controlled through backpressure and maxSpoutPending. So the queue population may be higher than previous version
On Jul 22, 2016 7:32 PM, "Jeff Hu (BLOOMBERG/ 731 LEX)" <[email protected]> wrote: Comparing Apache Storm 0.10.0 and 1.0.1, we found significant performance improvements with 1.0.1 including less CPU usage during busy hours, latency, and GC. However, we found that the memory size (VSIZE) is increased from 76G to 140G and resident set size(RSS) from 22G to 84G for a topology with the same yaml and the same memory setting of –Xms16G –Xmx16G. Can someone explain this? Thanks
