OP really should compare the memory consumptions of the Java version and Go version.
On Monday, October 29, 2018 at 4:53:52 PM UTC-4, robert engels wrote: > > Hello Gophers, > > I’ve been chastised in the past regarding some of my Go performance tests > - using Java as a baseline. In most of these micro-benchmarks Go has > performed more poorly than expected. > > So, I ported nats (https://nats.io) message broker (which is written in > Go) to Java. It is available at github.com/robaho/jnatsd > > This was an ideal test case, as only the server broker was ported, and all > of the client tools and benchmarks could be run unmodified. > > So, using the Java based broker (under OpenJDK11 with Shenandoah) and the > nats bench with defaults: > > without SSL, 3200k msgs per second > with SSL, 900k msgs per second > > using the Go based server (under Go 1.11) and the same test parameters: > > without SSL, 5400k msgs per second > with SSL, 2600k msgs per second > > The latency numbers are much closer, but notice the much higher max in > Java (attributed to larger GC pauses). It is expected that in the above > throughput tests, more GC cycles, thus a much larger penalty. > > Java: > latency avg 191214 min 167079 max 936848 ns > Go: > latency avg 188338 min 158997 max 588876 ns > > So, Go shows VERY, VERY impressive performance numbers in a real-world > application, and aligns with my thoughts that Go is ideally suited to > replacing systems level software currently written in C/C++. > > Some notes, the Java implementation uses some custom string processing > classes to improve performance, but does not use async IO (mainly since > doing so with SSL is a huge PITA). The Go server is also FAR more robust in > terms of ‘handling slow consumers, handling lots of clients, etc.” > > I might try modifying the Java to use NIO direct buffers and channels to > observe any improved performance. > > > > > > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
