1、there are 10 same programs in different PC server，and the config parameters of one program is below：
mongo.order.connectionsPerHost=100
mongo.order.threadsAllowedToBlockForConnectionMultiplier=20
mongo.order.connectTimeout=10000
mongo.order.socketKeepAlive=true
mongo.order.socketTimeout=15000
mongo.order.writeConcern=MAJORITY

2、when there are 10000 clients visit the 10 same programs at the same time,in order to get data; the 3 mongos get below 2000 connections in total;but
one secondary of one shard get more than 6000 collections;I think there has some problems about the connections from mongos to shards;

3 、I thried to modify parameter "connPoolMaxShardedConnsPerHost=10" in one mongos or one secondary of shard,but it doesn't work;so I want to know how to control the connections from mongos to shards

4、The file "questions_TaskExecutorPool.log" is the log of the mongos,The file "shard.log" is the log of shard,The file "metrics.*" are diagnostic data
Thank you very much