Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!cs.utexas.edu!sun-barr!rutgers!mjm!mjf From: mjf@mjm.mjm.com (Mark Fresolone) Newsgroups: comp.sys.hp Subject: Re: what is msmod? Message-ID: <1450002@mjm.mjm.com> Date: 19 Mar 91 18:10:45 GMT References: Organization: Melillo Consulting, Somerset, NJ Lines: 37 >/ mjm:comp.sys.hp / njw@doc.ic.ac.uk (Nick Williams) / 2:33 pm Mar 8, 1991 / >It allows the superuser to activate or deactivate measurements of all >sorts of cute things, it seems, by using a device /dev/meas_drivr... True. >Anybody know anything about this program? // Yes, though read on. >What it really does? //Your above description is pretty accurate. >How it >displays its results? Msmod(1) requests buffer allocation and measurement invocation in the kernel. The kernel measurement routines simply make binary measurements available in kernel buffers (contrary to the apparent intent of /dev/meas_drivr). Other software opens /dev/kmem, and empties the circular buffer. Yet-other applications can be used to generate reports on the data once brought out into user-land. >Or, is it even safe/useful to use? (hpux7.0, >hp9000s300) The kernel and user software that msmod(1) is a part of is not documented or intended for use outside of HP. You seem aquainted with the disclaimers that normally follow ("ISO disclaimer..." et.al.). HP uses this Measurement System and other HP-developed kernel statistics software to provide performance analysis tools such as those found in the HP "XEnvironment" product. In vue of HP-VUE and other recent HP-UX productizations, I couldn't tell you where this stuff shows up in HP's price list nowadays. >This is what happens if you spend boring afternoons poring over hpux, >instead of working... Tell me........... >Nick. Mark Fresolone mjf@mjm.com, rutgers!mjm!mjf Melillo Consulting/MJM Software 908-873-0075/Fax 908-873-2250