Hi Michael, I do not think it is necessary to download ALL of them serially. H2 Server push might become a big advantage as already mentioned. e.g. if requesting a pom, it might push the jar and its dependencies right away with it. THAT would probably save a lot of connections (and time).
The only problem is that we would need server support for this (h2 push) first. Am Mo., 9. Nov. 2020 um 16:35 Uhr schrieb Michael Osipov <[email protected]>: > > Am 2020-11-05 um 16:49 schrieb Jakub Bartecek: > > Hi, > > I did a performance test of HTTP/2 and its comparison with HTTP/1.1 and I > > would like to share my results with you. > > > > I wrote a Python script [1] to download 100 artifacts in parallel using > > asynchronous HTTP client supporting both HTTP/1.1 and HTTP/2. I chose 100 > > artifacts [2] from Maven Central, which were downloaded when I did a clean > > build of one of my projects. > > > > All 100 artifacts were downloaded using HTTP/1.1 and also HTTP/2 and I > > stored the results in this file [3]. I did 10 experiments and measured its > > performance. In the middle I switch the order of HTTP/1.1 and HTTP/2 > > requests to avoid a possible bias. I run it from my laptop connected to 160 > > Mbit/s network. > > > > The experiments showed massive performance improvements when using HTTP/2 > > instead of HTTP/1.1 > > *:* > > > > - *The average download time using HTTP/1.1 was 3753.7 ms and using > > HTTP/2 971.8 ms* [4] > > > > > > - *In average the artifacts were downloaded 3.86 times faster using > > HTTP/2 than using HTTP/1.1* [5] > > > > > > Kuba > > > > [1]: https://github.com/jbartece/http2performance/blob/main/http2PerfTest.py > > [2]: https://github.com/jbartece/http2performance/blob/main/centralUrls.txt > > [3]: https://github.com/jbartece/http2performance/blob/main/testResults.txt > > [4]: > > https://github.com/jbartece/http2performance/blob/main/finalResults.txt#L26 > > [5]: > > https://github.com/jbartece/http2performance/blob/main/finalResults.txt#L32 > > This testing is logically wrong/incomplete. You have to download > serially maven-metadata.xml, its checksum files, POM, its checkfiles and > artifact itself and its checksum files. Please redo, I would to to test > this too then. Enable HttpClient debug logging to see that more than > just the JAR is downloaded. > > Michael > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
