Unix pc sluggishness when switching windows

[Bruce Lilly]

In article <1991Feb5.040416.354 at shibaya.lonestar.org> afc at shibaya.lonestar.org (Augustine Cano) writes:
>My 3b1 had been up for more than a month, without any reboots.  At some
>point I had the feeling that it was really slow when changing windows, via
><SHIFT><SUSPEND> or <SHIFT><RESUME> (I'm running 3.51m).  It looked like
>a lot of swapping, sometimes taking more than 5 seconds to get to the
>next/previous window.  Of course the disk was hard at work in this period.
> [ ... ]
>With 3 windows open (through the UA), with nothing but shells in each of
>them, I tested response time.  Then I rebooted.  Three ksh windows, as
>before, but now trn running in one, elm on another and page on the third.
>You wouldn't believe the difference!  window switching is now almost
>instantaneous, like it used to be.
> [ ... ]
>So, what is slowly degrading in the kernel that is fixed at boot time?
>Has anybody else noticed this?  Does anybody have a clue as to what it is?

I also have noticed this. I don't know what the cause is, though.

--
	Bruce Lilly		blilly!balilly!bruce at sonyd1.Broadcast.Sony.COM