16163
89%

Ran 19 Nov 2019 12:52AM UTC

Jobs 1

Files 266

Run time 17s

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Build # 16163

Build Type

push

travis-ci

Committed by

web-flow

Commit Message

netty: reduce default worker ELG thread number by half, to number of CPU cores (#6439)

This would cut the amount of per-thread direct buffer allocations by half, especially with light traffic. This will also cut the amount of file descriptors that's created per thread by half.

Internal benchmark results (median of 5 runs) doesn't show any significant change:
```
                          Before (STDEV)           After (STDEV)
grpc-java-java-multi-qps-integrity_only
Actual QPS               711,004 (6,246)         704,372 (6,873) 
QPS per Client CPU        23,921   (252)          24,188   (252)

grpc-java-java-multi-throughput-integrity_only
Actual QPS                35,326    (48)          35,294    (29) 
QPS per Client CPU         3,362    (17)           3,440    (13)

grpc-java-java-single-latency-integrity_only
Median latency (us)          127  (2.77)             129  (3.13)

grpc-java-java-single-throughput-integrity_only
Actual QPS                   581 (11.60)             590  (7.08)
QPS per Client CPU           490 (10.98)             498  (5.63)
```

Run Details

15294 of 17536 relevant lines covered (87.21%)

0.87 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	16163.1	19 Nov 2019 12:52AM UTC	0	87.21	Travis Job 16163.1

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