On Fri, 2019-09-27 at 13:45 -0400, Laurence Oberman wrote: > > Hi Martin > > Agreed about log extraction, but turning that on with a busy workload > in a production environment is not practical. We cant do it with > systems with 1000's of luns and 1000's of IOPS/sec. > Also second resolution is good enough for the debug we want to see. I gather that you look at a specific problem where second resolution is sufficient. For upstream, the generic usefulness should be considered, and I don't think we can say today that better-than-second resolution will never be useful, so I still vote for milliseconds. Wrt the enablement of the option on highly loaded systems, I'm not sure I understand. You need to enable SCSI logging anyway, don't you? Is it an issue to have to set 2 sysfs values rather than just one? Regards, Martin > > Regards > Laurence >
