Hi All, Quick question about “mmdiag —iohist” that is not documented in the man page … what does it mean if the client IP address field is blank? That the NSD server itself issued the I/O? Or ??? This only happens occasionally … and the way I discovered it was that our Python script that takes “mmdiag —iohist” output, looks up the client IP for any waits above the threshold, converts that to a hostname, and queries SLURM for whose jobs are on that client started occasionally throwing an exception … and when I started looking at the “mmdiag —iohist” output itself I do see times when there is no client IP address listed for a I/O wait. Thanks… Kevin — Kevin Buterbaugh - Senior System Administrator Vanderbilt University - Advanced Computing Center for Research and Education Kevin.Buterbaugh at vanderbilt.edu<mailto:Kevin.Buterbaugh at vanderbilt.edu> - (615)875-9633 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20180711/4021a0cc/attachment.html>