wy96f commented on issue #2730: ARTEMIS-2399 Fix performance degradation when there are a lot of subscribers URL: https://github.com/apache/activemq-artemis/pull/2730#issuecomment-505710006 > @wy96f 5000 msg/sec sounds to me too similar to the default value for page-max-concurrent-io ie "The max number of concurrent reads allowed on paging. Default=5" > Could you check the results again by increasing the default to the total number of consumers? > To avoid being backpressured by the `Semaphore` when the pages are being evicted? We adjusted page-max-concurrent-io to 560, the result was similar. producer tps and latency:  consumer tps and latency: 
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