How to access "process context switches` information

[Jerry Sims]

In the past I have utilized System Activity Reporting ( sar -w ) to access "process context switches" ( pswch/s ) information. The
system ( HP9000 ; 11.0 ) does not have sar enabled. Is ther another way to obtain this information ( process context switches per second ) ?

[Pete Randall]

Jerry,

What do you mean it doesn't have sar enabled? What happens if you enter the sar command? Do you get an error message? Maybe something was not installed correctly. Sar is an integral with HP-UX.


Pete

[Jeff Schussele]

Hi Jerry,

glance or it's GUI, gpm, can give you that info. It's a purchase item, but you can get a 60-day free demo trial.

Rgds,
Jeff

[Brian Bergstrand]

vmstat will dispaly this under the "faults cs" column.

HTH.

[A. Clay Stephenson]

I suspect that you are simply typing in sar -w as opposed to sar -w 5 2 to do 2 samples over 5-second intervals. Sar w/o the interval attempts to open files in /var/adm which probably haven't been setup. You should have no trouble invoking sar with interval and count parameters.

[Jeff Schussele]

Hi Jerry,

You must give sar a time value & iteration count, else it assumes it's supposed to read a file. So try

sar -w 5 5

for 5 iterations 5 seconds apart.

HTH,
Jeff