sar -q and sar -u ouput not consistent?

[John Destreel]

Hi,

lately I noticed a frequent runq-sz > 2 and a
%runocc of 100 all of the time (sar -q)

while sar -u shows an idle cpu most of the time. Vmstat and top are consistent with sar -u.

What can be the problem with sar -q? I'm not aware of any kind of performance degrade.

average sar -u including backup and ignite:
usr 2 sys 2 wio 24 idle 72

[Christian Hettler · Accepted solution]

hi,


sar may count interrupt time as idle time.
Use glance/gpm or MeasureWare.

(book: "hp-ux 11 tuning and performance" p.200)

Christian

[John Destreel]

The glance output is consistent with the sar -u. So what does this mean %runocc 100% and runq-sz > 3 of sar -q. Is it a bug?