My Thanks for the responses provided by:
Glenn Satchell - Uniq Professional Services <Glenn.Satchell@uniq.com.au>
Casper Dik <casper@holland.Sun.COM>
While neither response resulted in a solution to our problem, both
provided us with some additional insight, and assisted us in further
isolating the problem.
Our original problem still persists, however, we have discovered that
the computer is experiencing some type of internal clock problem. Here
are the new observations: The computer is only keeping time at only a
fraction of normal. By repeatedly executing the "date" function, we
have observed that the computer's clock will advance 1 second, then step
back two seconds in time. No type of time synchornization in running on
the machine. In short, it looks as if the computer is generating scads
of interrupts for attempting to keep the time correct. If anyone has
experienced this or can provide us with further insight, we would
greatly appreciate it.
Thanks in advance,
Jay
Here is my original post, and responses:
>Hi everyone,
>I am having a very strange problem with one of my UltraSparcs
>(UltraSparc I, single 167 Mhz cpu, 192 meg memory, Solaris 2.5).
>The problem is that whenever you are in either the CDE or Openwindows,
>the system acts very slowly in terms of bringing the focus to a window.
>Once you have the focus of a window, it acts okay. At times, the system
>won't even let you move a window around.
>While running the performance meter, I noticed that the "context
>switches per second" was running extremly high (compared to another
>UltraSparc I) and the "interrupts per second" was running approximately
>twice as high (around 1600 with nothing going on) as another UltraSparc
>I. I've checked the network card and it seems alright.
>I've even booted a different version of Solaris from CD (thinking that
>it might be a problem with the O/S install).
>I have pulled about every board out of the computer that I can, I've
>swapped mice, keyboards, but to no avail. I even pulled memory, but the
>computer still acts the same and gives approximately the same numbers on
>the performance meter.
This looks like someone/something is generating stray interrupts.
Perhaps "vmstat -i" will give a clue?
Casper
Casper Dik <casper@holland.Sun.COM>
Anything connected to the serial ports? Long serial cables could be
acting like an antenna on the serial port and causing lots of
interrupts...
regards,
--
Glenn Satchell glenn@uniq.com.au www.uniq.com.au |
Uniq Professional Services Pty Ltd ACN 056 279 335 | In a world with
PO Box 70, Paddington, NSW 2021, (Sydney) Australia | no fences who
Phone 02 9380 6360 Pager 016 287 000 Fax 02 9380 6416 | needs Gates?
VISIT OUR WEB SITE http://www.uniq.com.au
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