I have also check the commit-latency-avg, it's around 23 millis per commit. That translate to about the same throughput that I'm getting now (0.04message/millis). Does anyone got any benchmark for kafka stream's commit-latency-avg? Is it possible to tune it to be faster? I just want to verify if this is supposed to be latency limit and we will have to work with horizontal scaling with more partition and stream processes if the input throughput is higher.
Another side question will be is custom consumer/publisher going to be faster than default kafka stream implementation? Regards, Brilly -----Original Message----- From: TSANG, Brilly [mailto:brilly.ts...@hk.daiwacm.com] Sent: Wednesday, February 14, 2018 11:01 AM To: users@kafka.apache.org Subject: RE: Kafka Stream tuning. Hey Damian and folks, I've also tried 1000 and 500 and the performance state is exactly the same. Any other ideas? Regards, Brilly -----Original Message----- From: Damian Guy [mailto:damian....@gmail.com] Sent: Tuesday, February 13, 2018 4:48 PM To: users@kafka.apache.org Subject: Re: Kafka Stream tuning. Hi Brilly, My initial guess is that it is the overhead of committing. Commit is synchronous and you have the commit interval set to 50ms. Perhaps try increasing it. Thanks, Damian On Tue, 13 Feb 2018 at 07:49 TSANG, Brilly <brilly.ts...@hk.daiwacm.com> wrote: > Hi kafka users, > > I created a filtering stream with the Processor API; input topic that > have input rate at ~5 records per millisecond. The filtering function > on average takes 0.05milliseconds to complete which in ideal case > would translate to (1/0.05) 20 records per millisecond. However, > when I benchmark the whole process, the streams is only processing > 0.05 record per milliseconds. > > Anyone have any idea on how to tune the steaming system to be faster > as > 0.05 record is very far away from the theoretical max of 20? The > results above are per partition based where I have 16 partition for > the input topic and all partitions have similar throughput. > > I've only set the streams to have the following config: > Properties config = new Properties(); > config.put(StreamsConfig.APPLICATION_ID_CONFIG, appId); > config.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrap); > config.put(StreamsConfig.STATE_DIR_CONFIG, stateDir); > config.put(StreamsConfig.COMMIT_INTERVAL_MS_CONFIG, 50); > > I'm not defining TimeExtractor so the default one is used. > > Thanks for any help in advance. > > Regards, > Brilly > > ________________________________ > > > ********************************************************************** > ********** > DISCLAIMER: > This email and any attachment(s) are intended solely for the person(s) > named above, and are or may contain information of a proprietary or > confidential nature. If you are not the intended recipient(s), you > should delete this message immediately. 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