There is a runner configuration file in bench/wtperf. It seems like it should be in bench/wtperf/runners where all other configuration files live. The file was created in WT-4998. ravi.giri@mongodb.com you did that work as part of a migration in WT-4998. Is there a reason the file needs to be there or can it move to runners? The only catch may be that some script somewhere references it and needs it directory path modified.