e282e504f1
Motivation: While benchmarking the native transport, I noticed that gathering write is not as fast as expected. It was due to the fact that we have to do a lot of array copies to put the buffer addresses into the iovec struct array. Modifications: Introduce a new class called IovArray, which allows to fill buffers directly into an off-heap array of iovec structs, so that it can be passed over to JNI without any extra array copies. Result: Big performance improvement when doing gathering writes: Before: [nmaurer@xxx]~% wrk/wrk -H 'Host: localhost' -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' -H 'Connection: keep-alive' -d 120 -c 256 -t 16 --pipeline 256 http://xxx:8080/plaintext Running 2m test @ http://xxx:8080/plaintext 16 threads and 256 connections Thread Stats Avg Stdev Max +/- Stdev Latency 23.44ms 16.37ms 259.57ms 91.77% Req/Sec 181.99k 31.69k 304.60k 78.12% 346544071 requests in 2.00m, 46.48GB read Requests/sec: 2887885.09 Transfer/sec: 396.59MB After: [nmaurer@xxx]~% wrk/wrk -H 'Host: localhost' -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' -H 'Connection: keep-alive' -d 120 -c 256 -t 16 --pipeline 256 http://xxx:8080/plaintext Running 2m test @ http://xxx:8080/plaintext 16 threads and 256 connections Thread Stats Avg Stdev Max +/- Stdev Latency 21.93ms 16.33ms 305.73ms 92.34% Req/Sec 194.56k 33.75k 309.33k 77.04% 369617503 requests in 2.00m, 49.57GB read Requests/sec: 3080169.65 Transfer/sec: 423.00MB |
||
|---|---|---|
| .. | ||
| src | ||
| pom.xml | ||
| README.md | ||
Native transport for Linux
See our wiki page.