Simply put: I need help!!
I could use some suggestions on where to go or what to read regarding
performance tuning with Solaris 2.3 (maybe 2.4 soon?) on a SPARCserver 490.
I've looked the section in the AnswerBook about system tuning, but it
seems like it tells me how to look, but not how to interpret. I'd like to
be able to take some measurements, interpret the results, make an intelligent
hypothesis about what to do, do it, and then let some new measurements show
that what I did helped.
When we get upwards of 35-40 users, with 6-10 of them running SPSS jobs, and
others running language compilers, and still others doing who-knows-what, the
performance starts to slowdown. Logins take longer, accessing mail files
take longer, compilers run slower. I look at the system using vmstat, and
I see 60-70meg of swap space used up. I see paging; a lot? I don't know.
I see under 'interrupts' the 'sys' column going above 10,000 at times.
I'm suspecting memory. Why? I always suspect memory :-). I've got 64meg
in it, and it doesn't take a lot of time for me to imagine how that little
of memory could get used up. But how do you tell if additional memory would
Granted, a 490 isn't that fast of a machine by today's standards. But I'm
going to need an analysis that shows that we are unable to server our students
with this system. Anybody got a 490 running Solaris 2.3 serving lots of
students? What kind of configuration do you have?
Thanks for all pointers and nudges.
Kevin R. Fenster
Nebraska Wesleyan University