post_auth step conditional process

Dear all. I created a collectd plugin that uses the eapol_test tool to monitor the performance of the Freeradius server. I am using the mysql module to handle logging and accounting, but there is a problem with this collectd plugin logging the success log every 10 seconds in the post_auth module. I don't know how to do this when I don't want to write this eapol_test record to the radpostauth table. Any suggestion will be appreciated.