by I am having some performance issues to deal with on a Sun system:
128Mbyte memory, SunOS 5.4 fix level "Generic_101945-10" with
Informix and a 16Mb token-ring and a couple of terminals.
In trying to find problems, I have been running vmstat and sar. In
particular, there is a sar listing I have found to be troublesome:
sar -p 10 1
SunOS Tsystem 5.4 Generic_101945-10 sun4m 11/01/95
12:34:08 atch/s pgin/s ppgin/s pflt/s vflt/s slock/s
12:34:18 0.00 0.00 0.00 24.38 40.76 4.40
The _System Performance Tuning_ O'Reilly book (by M. Loukides) states that
the value vflts/s for 386 systems should be 15 or less. But on this
Sparc system, it runs twice that lots of the time and indeed running
sar -p 10 100 lead to an average of 172 for vflt/s and 117 pflt/s on
this system. My question is, is this something that might indicate
where my problem is. What parameter in the kernel can I set to fix the
pflts/s and vflt/s so that they are not so high??? Surely 128MByte of
memory is not inadequate. I have tried it with and without running X.
Thanks for any help.
Thomas Kellar
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Thomas Kellar * Systems Programming 513-254-7246