On Tue, 2006-10-17 at 09:55, Rimmer, Todd wrote: > > From: Michael Newton > > Sent: Tuesday, October 17, 2006 3:02 AM > > To: [email protected] > > Subject: [openib-general] sysfs exposure of port counters useless? > > > > > > These are 32 bit counters. The rcv/xmit_data counters count 32-bit > > blocks. Also, these counts do not wrap: they peg at all 1s. > > At infiniband speeds, these counts can peg out very quickly indeed, > > to the point they can really only be of use if they can be reset each > time > > there read. Now if anyone who wants to use them has to go the CLI to > reset > > them, and theres little point in reading them without reset, why would > > anyone read them via sysfs? so why have them? > > > > We have found that while your comment is true for the data movement > counters, the error counters should not peg quickly, hence it is valid > to read them without resetting. However it is also useful to have an > ability to reset them. Of course if there are other CLI commands which > do this easily, the sysfs info is of less value.
There are diag tools for this. -- Hal > > Todd Rimmer > > > _______________________________________________ > openib-general mailing list > [email protected] > http://openib.org/mailman/listinfo/openib-general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general > _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
