Guozhang, Thank you for explaining. I see that in ProducerPerformance call back functions were used to get the latency metrics. For the TestEndtoEndLatency, does message size matter? What this end-to-end latency comprise of, besides transferring a package from source to destination (typically around 0.2 ms for 100bytes message)?
Thanks. Yuheng On Wed, Jul 15, 2015 at 3:01 PM, Guozhang Wang <wangg...@gmail.com> wrote: > Yuheng, > > Only TestEndtoEndLatency's number are end to end, for ProducerPerformance > the latency is for the send-to-ack latency, which increases as batch size > increases. > > Guozhang > > On Wed, Jul 15, 2015 at 11:36 AM, Yuheng Du <yuheng.du.h...@gmail.com> > wrote: > > > In kafka performance tests https://gist.github.com/jkreps > > /c7ddb4041ef62a900e6c > > > > The TestEndtoEndLatency results are typically around 2ms, while the > > ProducerPerformance normally has "average latency"around several hundres > ms > > when using batch size 8196. > > > > Are both results talking about end to end latency? and the > > ProducerPerformance results' latency is just larger because of batching > of > > several messages? > > > > What is the message size of the TestEndtoEndLatency test uses? > > > > Thanks for any ideas. > > > > best, > > > > > > -- > -- Guozhang >
