On Tue, Aug 26, 2014 at 9:50 PM, Elvir Bahtijaragic <el...@bahtech.com> wrote:
> Hi Waqas, > > > Actually the project was added about 3 months ago ( > https://github.com/Kixeye/kixmpp/graphs/commit-activity). > > > This project has an interesting history. Initially it started as an > efficient load testing client for testing Openfire - we are able to > simulate 15000 clients on a xlarge instance on AWS. Other XMPP clients were > unable to handle a large number of XMPP clients on a single instance, i.e. > Smack had tons of memory leaks and Tigase was extremely inefficient in > processing stanzas. Soon after load testing Openfire we realized that it > performs extremely poorly under load and is completely unstable in a > clustered environment. So we dropped Openfire and implemented our own XMPP > server - using high-performance computing design patterns. Our requirement > was to reach 500,000 simulated chatting clients - but we never actually hit > a limit in our load tests. Based on our load testing parameters: a million > simulated clients caused the server to output 230,000 message stanzas per > second with a load average of 6 on a 32 core box using only 30% memory on > average. > > > Thanks! We will add more documentation soon. Currently it's meant to be > used as a library and enable any Java application to embed a XMPP client or > XMPP server. > > > Regards, > > Elvir B. > That's very informative. The performance and memory usage numbers are impressive. It would be great if you could publish your load testing tools as well, so other server vendors can compare. I know I'd like to benchmark Prosody, the server I work on. Unless I missed it, the server is missing server-to-server federation. Is this something you plan to add? Again, great job on the project and thanks for releasing this. I like the code quite a bit. My biggest complaint so far is mixed tabs and spaces in many of the files :) -- Waqas Hussain
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