Unix pc sluggishness when switching windows (long)
Michael Gersten
michael at stb.info.com
Mon Feb 11 13:32:09 AEST 1991
In article <1991Feb9.011213.8868 at blilly.UUCP> bruce at balilly.UUCP (Bruce Lilly) writes:
> F S UID PID PPID C PRI NI ADR SZ:RSZ WCHAN STIME TTY TIME COMD
<3.5 meg machine, good speed>
> 1 S root 157 1 3 27 20 220169: 35 54f14 Jan 11 w3 52:11 wmgr
<2 meg machine, slow speed>
> 1 S root 234 1 7 27 20 a5 60: 0 5af14 Jan 13 w3 16:52 wmgr
<2 meg machine, good speed>
> 1 S root 234 1 7 27 20 a5 61: 56 5af14 Jan 13 w3 17:06 wmgr
What these have in common is the RESIDENT size of wmgr. The slow speed
on the middle one is because wmgr is completely swapped out on the disk.
So any suspend/resume activity causes it to be swapped in. Both of the
other cases have wmgr resident in memory (or at least enough of it).
A recently restarted wmgr has a smaller working set size needed to switch.
Therefore, it will be faster.
Michael
--
Michael
michael at stb.info.com denwa!stb!michael anes.ucla.edu!stb!michael
"Space is an illusion; disk space doubly so"
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