We recently upgraded out MongoDB from community version 3.4.14 to 4.0.1
We see that the compression ratio differs for the same type of data between the version
Hence we did a test and found that compression ratio drastically fell for 3.6+
|Version||Raw size||Storage size||Comp Ratio|
Can you please suggest if any changes has to be made in the configuration of MongoDB or WiredTiger?
Below is the wired tiger configuration we are using
configString: "eviction_dirty_target=60, eviction_dirty_trigger=80, eviction=(threads_min=20,threads_max=20)"