Re: [wildfly-dev] Support for DMR Streams

> Hi All, > > The upcoming DMR 1.4.0 version will introduce DMR Streaming API [1] - > see attachment. Will be DMR 1.4.z included in WF 11 or also in next EAP 7 release?

> The idea of this new feature grew up while I was working on DMR-9 issue [2]. > > In short the news in upcoming JBoss DMR 1.4.0 are: > * it will be compilable on JDK8 and above > * it will be 100% backward compatible on binary level with previous > version > * it replaces old cookcc based parser with new one based on DMR > Streaming API > * DMR parsing will be times faster with old model based API > * new DMR streaming API is highly memory efficient and really very fast Nice results in attached spreadsheets. > One example on how to use new DMR streaming API can be seen here [3]. > > I believe this new DMR Streaming API will become very handy for many of us > because it opens new opportunities to decrease memory and CPU usage in > our core. > > At the moment in current prototype [4] I didn't touch DMR object model > writing yet > because new DMR Streaming API does not (and most probably will not) > support pretty print feature > (because of its focus on speed and efficiency). > But I'm considering I might fix the object model writing flow when > pretty print is off. > Fixing it would speed it up significantly. Any objections? I think pretty print feature is need, at least in CLI for stuff like ':read-resource(recursive=true)'

Rostislav > As a final note today I run few benchmarks (see attachments). > Here are some outcomes from benchmark results in short: > * Writing small DMR structures in DMR format is 2,4 times faster with > new DMR streaming API > * Writing small DMR structures in JSON format is 2,6 times faster with > new DMR streaming API > * Reading small DMR structures in DMR format is 3,9 times faster with > old DMR object model API > * Reading small DMR structures in JSON format is 3,7 times faster with > old DMR object model API > * Reading small DMR structures in DMR format is 5 times faster with > new DMR streaming API > * Reading small DMR structures in JSON format is 4,4 times faster with > new DMR streaming API > * Reading big DMR structures in DMR format is 5,2 times faster with > old DMR object model API > * Reading big DMR structures in JSON format is 6 times faster with old > DMR object model API > * Reading big DMR structures in DMR format is 7,6 times faster with > new DMR streaming API > * Reading big DMR structures in JSON format is 8,8 times faster with > new DMR streaming API > > PS: Hopefully new DMR streaming API will seamlessly integrate with GWT > (used in our console). > > [1] > https://github.com/ropalka/jboss-dmr/tree/DMR-9/src/main/java/org/jboss/d... > [2] https://issues.jboss.org/browse/DMR-9 > [3] > https://github.com/ropalka/jboss-dmr/blob/DMR-9/src/main/java/org/jboss/d... > [4] https://github.com/ropalka/jboss-dmr/commits/DMR-9 > > Regards, > > -- > Richard Opalka > Principal Software Engineer > JBoss by Red Hat > Mobile: +420 731 186 942 > > > _______________________________________________ > wildfly-dev mailing list > wildfly-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/wildfly-dev _______________________________________________ wildfly-dev mailing list wildfly-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/wildfly-dev