In my local I ran the iibench-mongodb benchmark with mongo 3.2 & 3,4 with wiredTiger. In my tests mongo 3.2 wiredTiger seems to be performing better than mongo 3.4 wiredTiger for both insert & query. Is this expected and why is the latest mongo performing worse than the previous release?
Environment -
sudo ./mongod --storageEngine wiredTiger --dbpath /tmp/data/mongodb/wired2//tmp/data/mongodb/wired2/ is deleted before each test run and mongo is started again with the empty /tmp/data/mongodb/wired2/Below are the results of my test. It represents the average of 3 runs:-
Yeah it seems that all the features included in the new versions are slowing the database
Benchmark between all versions: https://medium.com/@hartator/mongodb-4-2-vs-4-0-3-6-3-4-and-3-2-benchmarks-ee96a09ef231
But most of the benchmark are realized on standalone architecture, we can hope that performances are better on new version with a replicaset architecture, but i didn't found any benchmark so far..