On Wed, 29 Aug 2012, Gary E. Miller wrote: > Yo Alan! > > On Wed, 29 Aug 2012 17:08:43 -0400 (EDT) > Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > > > Uh, not easy. This is a production machine. Acceptable downtime is > > > very small. There should be a way to turn it off at runtime. > > > > No, there shouldn't. It's a debugging feature; while debugging we > > want to see all occurrences of these messages. > > > > Production machines should not run debugging kernels. > > We'll have to agree to disagree. My experience is the fun bugs only happen > in production. A big NASA study years ago proved that after spending $1M > per line of code that only half the bugs could be caught before live > missions. Well, put it this way: Production machines should not run debugging kernels unless you're actually trying to debug something. For normal operation, a debugging kernel should not be used. Remember, the purpose of a debugging kernel is not to provoke bugs or notify you that the bugs exist. Normal kernels do these things just fine. The purpose is to help find the cause of bugs. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
