insert data took too much time

[Lucky]

Hi,
   I excute the sql like this:
        insert into "mycache".cacheInfo (_key,fid) 
values('111','111'),('222','222') ...
   This will insert 90000 records at one time and it took 100 seconds. 
   I create index on column fid.
   The ignite version is 2.2 and the table has no record.
   the configuration is set writeBehind to true ,and writeSynchronizationMode 
is set to PRIMARY_SYNC


   what did I miss ?
   Thank you.