PublisherAsBlockingIterable LinkedBlockingQueue -> SpscBlockingQueue #2384
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Scottmitch
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...-concurrent-api/src/main/java/io/servicetalk/concurrent/api/PublisherAsBlockingIterable.java
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mgodave
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...-concurrent-api/src/main/java/io/servicetalk/concurrent/api/PublisherAsBlockingIterable.java
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|
LinkedTransferQueue also does |
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Motivation:
LinkedBlockingQueue allows for multiple producers and multiple consumers.
It uses LockSupport park in offer and unpark in take. LockSupport unpark
on the EventLoop thread has been shown to impact throughput during benchmarks.
SpscBlockingQueue (yield_count == 1)
```
Running 30s test @ http://localhost:8080/medium, using 'ServiceTalkGrpcBlockingClientStrAgg' client
1024 threads and 1024 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency - - - -
Req/Sec 0.01k - 0.01k -
291045 requests in 30s
Requests/sec: 9701.50
Transfer/sec: -
OK: 291045
KO: 0
```
SpscBlockingQueue (yield_count == 2)
```
Running 30s test @ http://localhost:8080/medium, using 'ServiceTalkGrpcBlockingClientStrAgg' client
1024 threads and 1024 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency - - - -
Req/Sec 0.01k - 0.01k -
328586 requests in 30s
Requests/sec: 10952.87
Transfer/sec: -
OK: 328586
KO: 0
```
LinkedTransferQueue
```
Running 30s test @ http://localhost:8080/medium, using 'ServiceTalkGrpcBlockingClientStrAgg' client
1024 threads and 1024 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency - - - -
Req/Sec 0.01k - 0.01k -
289396 requests in 30s
Requests/sec: 9646.53
Transfer/sec: -
OK: 289396
KO: 0
```
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Motivation:
LinkedBlockingQueue allows for multiple producers and multiple consumers.
It uses LockSupport park in offer and unpark in take. LockSupport unpark
on the EventLoop thread has been shown to impact throughput during benchmarks.
SpscBlockingQueue (yield_count == 1)
SpscBlockingQueue (yield_count == 2)
LinkedTransferQueue