mumrah edited a comment on pull request #9008:
URL: https://github.com/apache/kafka/pull/9008#issuecomment-659665576
Updated the benchmarks with @lbradstreet's suggestions. Here are the results
for 3 partitions, 10 topics. GC profiles included.
On this branch:
```
Benchmark
(partitionCount) (topicCount) Mode Cnt Score Error
Units
FetchRequestBenchmark.testFetchRequestForConsumer
3 10 avgt 15 2110.741 ± 27.935
ns/op
FetchRequestBenchmark.testFetchRequestForReplica
3 10 avgt 15 2021.114 ± 7.816
ns/op
FetchRequestBenchmark.testSerializeFetchRequestForConsumer
3 10 avgt 15 3452.799 ± 16.013
ns/op
FetchRequestBenchmark.testSerializeFetchRequestForReplica
3 10 avgt 15 3691.157 ± 60.260
ns/op
GC Profile
(partitionCount) (topicCount) Mode Cnt Score Error
Units
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.alloc.rate
3 10 avgt 15 4295.532 ± 56.061
MB/sec
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.alloc.rate.norm
3 10 avgt 15 9984.000 ± 0.001
B/op
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.churn.PS_Eden_Space
3 10 avgt 15 4292.525 ± 56.341
MB/sec
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.churn.PS_Eden_Space.norm
3 10 avgt 15 9977.037 ± 28.311
B/op
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.churn.PS_Survivor_Space
3 10 avgt 15 0.187 ± 0.027
MB/sec
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.churn.PS_Survivor_Space.norm
3 10 avgt 15 0.435 ± 0.060 B/op
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.count
3 10 avgt 15 2335.000
counts
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.time
3 10 avgt 15 1375.000
ms
FetchRequestBenchmark.testFetchRequestForReplica:·gc.alloc.rate
3 10 avgt 15 4416.855 ± 16.429
MB/sec
FetchRequestBenchmark.testFetchRequestForReplica:·gc.alloc.rate.norm
3 10 avgt 15 9832.000 ± 0.001
B/op
FetchRequestBenchmark.testFetchRequestForReplica:·gc.churn.PS_Eden_Space
3 10 avgt 15 4417.032 ± 24.858
MB/sec
FetchRequestBenchmark.testFetchRequestForReplica:·gc.churn.PS_Eden_Space.norm
3 10 avgt 15 9832.358 ± 28.932
B/op
FetchRequestBenchmark.testFetchRequestForReplica:·gc.churn.PS_Survivor_Space
3 10 avgt 15 0.186 ± 0.015
MB/sec
FetchRequestBenchmark.testFetchRequestForReplica:·gc.churn.PS_Survivor_Space.norm
3 10 avgt 15 0.415 ± 0.033
B/op
FetchRequestBenchmark.testFetchRequestForReplica:·gc.count
3 10 avgt 15 2280.000
counts
FetchRequestBenchmark.testFetchRequestForReplica:·gc.time
3 10 avgt 15 1376.000
ms
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.alloc.rate
3 10 avgt 15 3256.172 ± 15.524
MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.alloc.rate.norm
3 10 avgt 15 12384.000 ± 0.001
B/op
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.churn.PS_Eden_Space
3 10 avgt 15 3255.019 ± 21.484 MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.churn.PS_Eden_Space.norm
3 10 avgt 15 12379.587 ± 49.161 B/op
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.churn.PS_Survivor_Space
3 10 avgt 15 0.122 ± 0.022 MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.churn.PS_Survivor_Space.norm
3 10 avgt 15 0.462 ± 0.084 B/op
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.count
3 10 avgt 15 2054.000
counts
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.time
3 10 avgt 15 1389.000
ms
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.alloc.rate
3 10 avgt 15 3319.965 ± 53.427
MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.alloc.rate.norm
3 10 avgt 15 13496.000 ± 0.001
B/op
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.churn.PS_Eden_Space
3 10 avgt 15 3320.125 ± 52.812
MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.churn.PS_Eden_Space.norm
3 10 avgt 15 13496.813 ± 64.774 B/op
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.churn.PS_Survivor_Space
3 10 avgt 15 0.126 ± 0.021 MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.churn.PS_Survivor_Space.norm
3 10 avgt 15 0.512 ± 0.085 B/op
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.count
3 10 avgt 15 2122.000
counts
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.time
3 10 avgt 15 1395.000
ms
```
On trunk:
```
Benchmark
(partitionCount) (topicCount) Mode Cnt Score Error
Units
FetchRequestBenchmark.testFetchRequestForConsumer
3 10 avgt 15 3.457 ± 0.016
ns/op
FetchRequestBenchmark.testFetchRequestForReplica
3 10 avgt 15 3.453 ± 0.035
ns/op
FetchRequestBenchmark.testSerializeFetchRequestForConsumer
3 10 avgt 15 13214.306 ± 61.158
ns/op
FetchRequestBenchmark.testSerializeFetchRequestForReplica
3 10 avgt 15 13147.870 ± 52.318
ns/op
GC Profile
(partitionCount) (topicCount) Mode Cnt Score Error
Units
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.alloc.rate
3 10 avgt 15 ≈ 10⁻⁴
MB/sec
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.alloc.rate.norm
3 10 avgt 15 ≈ 10⁻⁶
B/op
FetchRequestBenchmark.testFetchRequestForConsumer:·gc.count
3 10 avgt 15 ≈ 0
counts
FetchRequestBenchmark.testFetchRequestForReplica:·gc.alloc.rate
3 10 avgt 15 ≈ 10⁻⁴
MB/sec
FetchRequestBenchmark.testFetchRequestForReplica:·gc.alloc.rate.norm
3 10 avgt 15 ≈ 10⁻⁶
B/op
FetchRequestBenchmark.testFetchRequestForReplica:·gc.count
3 10 avgt 15 ≈ 0
counts
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.alloc.rate
3 10 avgt 15 1795.576 ± 8.351
MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.alloc.rate.norm
3 10 avgt 15 26136.002 ± 0.005
B/op
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.churn.PS_Eden_Space
3 10 avgt 15 1796.108 ± 11.527
MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.churn.PS_Eden_Space.norm
3 10 avgt 15 26143.702 ± 100.832 B/op
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.churn.PS_Survivor_Space
3 10 avgt 15 0.163 ± 0.019 MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.churn.PS_Survivor_Space.norm
3 10 avgt 15 2.366 ± 0.270 B/op
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.count
3 10 avgt 15 2134.000
counts
FetchRequestBenchmark.testSerializeFetchRequestForConsumer:·gc.time
3 10 avgt 15 1412.000
ms
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.alloc.rate
3 10 avgt 15 1804.695 ± 7.193
MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.alloc.rate.norm
3 10 avgt 15 26136.002 ± 0.005
B/op
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.churn.PS_Eden_Space
3 10 avgt 15 1805.666 ± 7.990
MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.churn.PS_Eden_Space.norm
3 10 avgt 15 26150.127 ± 86.455 B/op
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.churn.PS_Survivor_Space
3 10 avgt 15 0.166 ± 0.016 MB/sec
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.churn.PS_Survivor_Space.norm
3 10 avgt 15 2.406 ± 0.238 B/op
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.count
3 10 avgt 15 2097.000
counts
FetchRequestBenchmark.testSerializeFetchRequestForReplica:·gc.time
3 10 avgt 15 1395.000
ms
```
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