cf5adc8016
Summary: The parameter delete_obsolete_files_period_micros controls the periodicity of deleting obsolete files. db_bench was reading in this parameter intoa local variable called 'l' but was incorrectly using another local variable called 'n' while setting it in the db.options data structure. This patch also logs the value of delete_obsolete_files_period_micros in the LOG file at db startup time. I am hoping that this will improve the overall write throughput drastically. Test Plan: run db_bench Reviewers: MarkCallaghan, heyongqiang Reviewed By: MarkCallaghan Differential Revision: https://reviews.facebook.net/D6099