smbecker commented on issue #266:
URL: 
https://github.com/apache/pulsar-dotpulsar/issues/266#issuecomment-2844735579

   > Hi [@smbecker](https://github.com/smbecker) Could you set 
MessagePrefetchCount to something larger and see if the issue is still there?
   
   I changed the test a bit and increased the `MaxPrefetchCount` to 1000. Given 
enough time, the available permits does eventually start to increase, albeit 
much slower than when a smaller value is used. It seems to happen every time 
that 
[SendFlow](https://github.com/apache/pulsar-dotpulsar/blob/403a50683dc08b8297af067f0e975a1238b3bdb5/src/DotPulsar/Internal/ConsumerChannel.cs#L206)
 is called. However, the topic that I am working with is a bit low volume and 
each message takes several minutes to complete. So, I don't want each consumer 
to prefetch much of anything to allow other consumers to take the work.


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