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Date:      Tue, 30 Nov 1999 12:15:27 -0500
From:      "Lanny Baron" <lnb@cybertouch.org>
To:        Martin Gignac <mgignac@cinar.com>, questions@FreeBSD.ORG
Subject:   Re: top and interrupt...
Message-ID:  <199911301715.MAA05081@freedom.cybertouch.org>
In-Reply-To: <3843DE04.E883009E@cinar.com>

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Hello Martin,
Thanks for sending me the mail. Your dark shot looks like it just might be 
the problem. I was about to shutdown the box after reading the Asus manual 
regarding interrupts on slots 4 & 5. Starting the monitor I saw the flames 
screen saver going. I ran back to the box I am writing this mail from, started 
a ssh session. The screen saver was still running and the interrupt was at 
23.6%. I went to the box with the problem and moved the mouse to kill the 
screen saver, came back to this box and the interrupt was now at 0.0%. 

I have changed the screen saver to a text one and am waiting for it to start to
see the results. On another FreeBSD box that I have, it has the graphical 
FreeBSD Daemon and it has no interrupt or cpu problems. Maybe you ought 
to point this out to the people that make the screen savers or the tech 
people at FreeBSD. You may save people a big headache :-)

Thank you very much for your help and insight.
Regards,
Lanny Baron
> This might be a shot in the dark, but... Do you have a screensaver on
> (other than the 'blank' one)? I find that the 'fire' screensaver seems to
> take up about 20-30% interrupt when it is running. If I giggle the mouse
> of type on the keyboard to deactivate it, interrupt goes back down to 0%.
> Of course, you can only see this if you do your top through telnetting
> from another machine, as typing any key to clear the screensaver and look
> at 'top' on the machine in question will deactivate the screensaver right
> away, therefore bringing the interrupt percentage back down.
> 
> This leads me to another question tough (for anybody out there): does the
> screensaver actually slow down the machine when it is running (I am
> running IMAP and Samba and am wondering about the performance decrease
> when interrupts are at 20-30%)?
> 
> -Martin
> 
> 
> Lanny Baron wrote:
> > 
> > Hello, I have a problem for which, I cannot find the answer in man pages
> > or in a few books I have here. Would anyone know how to find out what
> > might be the cause of interrupt going up to as high as 26%? I had just
> > rebooted my pc after changing the kernel (thinking that maybe a few
> > entries with nic cards etc. might cause interrupts) and when I looked at
> > top after an hour or so all was fine. When I looked again about 2 hours
> > later, the interrupt is back up there.
> > 
> > last pid:  1391;  load averages:  0.00,  0.03,  0.05        up
> > 0+02:41:10 00:24:35 63 processes:  1 running, 62 sleeping CPU states: 
> > 0.0% user,  0.0% nice,  0.0% system, 23.3% interrupt, 76.7% idle Mem:
> > 36M Active, 2716K Inact, 14M Wired, 4804K Cache, 7543K Buf, 4168K Free
> > Swap: 300M Total, 1848K Used, 298M Free, 1% Inuse
> > 
> >   PID USERNAME   PRI NICE  SIZE    RES STATE    TIME   WCPU    CPU
> >   COMMAND 405 t00thie      2   0  5000K  4592K select   0:16  0.00% 
> >   0.00%
> > eggdrop-1.3.
> >   822 root         2   0  3336K  2628K select   0:07  0.00%  0.00% smbd
> >   403 mcse         2   0  2848K  2368K select   0:03  0.00%  0.00%
> > eggdrop-1.3.
> >  1315 root         2   0  1288K   952K select   0:02  0.00%  0.00% sshd1
> >   824 root         2   0  1288K   944K select   0:02  0.00%  0.00% sshd1
> >   398 smb          2   0  2736K  2220K select   0:01  0.00%  0.00%
> > eggdrop-1.3.
> >   118 root         2 -12  1044K   680K select   0:01  0.00%  0.00% xntpd
> >  1300 lnb          2   0  2308K  1704K select   0:01  0.00%  0.00%
> > BitchX-75p3
> >   320 root         2   0  1436K   840K select   0:01  0.00%  0.00% nmbd
> >   893 root         2   0  1816K  1484K select   0:00  0.00%  0.00% named
> >   262 root         2   0  1936K  1272K select   0:00  0.00%  0.00% httpd
> >   352 nobody       2   0  2060K  1
> > 
> > Thanks for your help :-)
> > 
> > Regards,
> > 
> > Lanny
> > 
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-questions" in the body of the message
> 




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