edwin@cs.ruu.nl (Edwin Kremer) (06/07/91)
I've two questions concerning HP-UX kernel variables. The systems
involved are HP9000 series 300,400 all running HP-UX 7.05. I hope one of
you kernel experts can help...
1. meas_sys
The kernel configuration file "/etc/conf/dfile" contains a variable
``meas_sys'' that is not documented in appendix A of the ``HP-UX System
Administration Tasks'' manual. It probably has to do with some measuring
system, but what exactly is it? A driver for a measuring peripheral? An
internal kernel performance measuring system? (if it is the latter, what
tools do you need to make use of it?)
2. _dk_xfer equivalent for SCSI disk??
I was lucky to lay my hands on a version of "xperfmon" that runs nicely
on HP-UX'es; it's based on the X11R4 version from MIT Athena and heavily
hacked by Ken Sumrall (@ HP Language Labs).
It runs nicely, but the ``disk I/O'' part only seems to notice HP-IB
disk tranfers rates, not SCSI. Looking at the code, it obtaines these
statistics from the "_dk_xfer" kernel variable (after doing a nlist()):
is this one HP-IB specific??
I have been poking (eh, no, make that peeking) around the kernel with
adb, checked the SCSI driver sources, but still couldn't find a SCSI
equivalent for this variable. How do I obtain SCSI disk tranfer rates??
Is there a more sophisticated way to do this, instead of just nlist-ing
some kernel variables?
thanks for your time,
--[ Edwin ]--
--
Edwin Kremer, systems and network administrator. [NIC-Whois handle: EHK3]
Department of Computer Science, Utrecht University, The Netherlands
Email: edwin@cs.ruu.nl | UUCP to: ...!uunet!mcsun!hp4nl!ruuinf!edwin