Hello! Why do you expect it to scale if you are only seem to run this in a single thread?
In a distributed system, throughput will scale with cluster growth, but latency will be steady or become slightly worse. You need to run the same thread with sufficient number of threads, and maybe using more than one client (VM and all) to drive load in order to saturate it. What is the CPU usage during the test on server nodes, per cluster size? Regards, -- Ilya Kasnacheev пт, 23 апр. 2021 г. в 10:59, jjimeno <jjim...@omp.com>: > Hello all, > > For our project we need a distributed database with transactional support, > and Ignite is one of the options we are testing. > > Scalability is one of our must have, so we created an Ignite Kubernetes > cluster in Azure to test it, but we found that the results were not what we > expected. > > To discard the problem was in our code or in using transactional caches, we > created a small test program for writing/reading 1.8M keys of 528 bytes > each > (it represents one of our data types). > > As you can see in this graph, reading doesn't seem to scale. Especially > for > the transactional cache, where having 4, 8 or 16 nodes in the cluster > performs worse than having only 2: > <http://apache-ignite-users.70518.x6.nabble.com/file/t3059/reading.png> > > While writing in atomic caches does... until 8 nodes, then it gets steady > (No transactional times because of this > <https://issues.apache.org/jira/browse/IGNITE-14076> ): > <http://apache-ignite-users.70518.x6.nabble.com/file/t3059/writing.png> > > Another strange thing is that, for atomic caches, reading seems to be > slower > than writing: > <http://apache-ignite-users.70518.x6.nabble.com/file/t3059/atomic.png> > > So, my questions are: > - Could I been doing something wrong that could lead to this results? > - How could it be possible to get worse reading timings in a 4/8/16 nodes > cluster than in a 2 nodes cluster for a transactional cache? > - How could reading be slower than writing in atomic caches? > > These are the source code and configuration files we're using: > Test.cpp > <http://apache-ignite-users.70518.x6.nabble.com/file/t3059/Test.cpp> > Order.h <http://apache-ignite-users.70518.x6.nabble.com/file/t3059/Order.h> > > node-configuration.xml > < > http://apache-ignite-users.70518.x6.nabble.com/file/t3059/node-configuration.xml> > > > Best regards and thanks in advance! > > > > > -- > Sent from: http://apache-ignite-users.70518.x6.nabble.com/ >
