[jira] [Created] (IGNITE-7662) Slow event listener's work

["Ruslan Gilemzyanov (JIRA)" <ji...@apache.org>]

Ruslan Gilemzyanov created IGNITE-7662:
------------------------------------------

             Summary: Slow event listener's work
                 Key: IGNITE-7662
                 URL: https://issues.apache.org/jira/browse/IGNITE-7662
             Project: Ignite
          Issue Type: Wish
          Components: cache
    Affects Versions: 2.2
            Reporter: Ruslan Gilemzyanov


I wroted some code that can run Ignite server node and attached to it EventListener. Then I putted 10 elements on the cache, and for each element recorded a time difference between putting and catching.

*When I created one server node and put 10 elements in IgniteCache I've got good results. For 10 elements it was:*

ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 51 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 2 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 1 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 1 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 1 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 2 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 2 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 2 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 2 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 1

*The results were the same when I added one node* (Topology snapshot became: [ver=2, servers=2, clients=0, CPUs=4, heap=3.6GB]).

*But when i applied setBackups(1) to IgniteCache the results became weird:*

ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 573 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 573 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 570 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 571 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 571 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 571 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 571 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 561 ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener - 560

 

*My code for creating an IgniteCache and attaching to it event listener is very simple:*

{{Ignite ignite = Ignition.start("ignite.xml")) CacheConfiguration<String, Long> cfg = new CacheConfiguration<>(); cfg.setCacheMode(CacheMode.PARTITIONED); cfg.setAtomicityMode(CacheAtomicityMode.ATOMIC); cfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_ASYNC); cfg.setName("myCache"); cfg.setBackups(1); IgniteCache<String, Long> cache = ignite.getOrCreateCache(cfg); ContinuousQuery<String, Long> query = new ContinuousQuery<>(); query.setLocalListener(new EventListener()); query.setLocal(true); QueryCursor<Cache.Entry<String, Long>> cursor = cache.query(query);}}

In my listener I just print this message:

{{ruslangm.sample.ignite.listener.EventListener - Time diff between put and listener }}

You can look at it on [github|https://github.com/ruslangm/ignite-sample], it is really so simple.

Is Ignite is really so slow in listening events when there are exist backups?



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)