Hello ,
System Alpha 2000
Dec Unix 4.0E
i try to analyse a collect output and i have stumbled over the following
------------------- snip collect output ---------------------------
# Process Statistics (RSS & VSZ in KBytes)
# PID User %CPU RSS VSZ UsrTim SysTim IBk OBk Maj Min Command
0 root 6.2 26M 576M 0.00 0.06 0 0 0 0 kernel idle
1829 root 5.6 770K 3.6M 0.01 0.03 0 0 0 0 xxx
217 root 5.5 753K 3.6M 0.01 0.03 0 0 0 0 xxx
32035 root 5.4 745K 3.6M 0.01 0.03 0 0 0 0 xxx
32502 root 5.4 770K 3.6M 0.03 0.07 0 0 0 0 xxx
137 root 5.4 761K 3.6M 0.01 0.03 0 0 0 0 xxx
1194 root 5.4 761K 3.6M 0.04 0.11 0 0 0 0 xxx
31140 root 5.2 778K 3.6M 0.01 0.03 0 0 0 0 xxx
162 root 5.0 770K 3.6M 0.01 0.03 0 0 0 0 xxx
2483 root 4.9 745K 3.6M 0.01 0.03 0 0 0 0 xxx
# CPU SUMMARY
# USER SYS IDLE WAIT INTR SYSC CS RUNQ AVG5 AVG30 AVG60 FORK VFORK
29 71 0 0 2450 16362 6323 6 7.35 7.57 7.46 5.35 0.00
# SINGLE CPU STATISTICS
# CPU USER SYS IDLE WAIT
0 29 71 0 0
----------- snip collect output -------------------------
the xxx is always the same Backup process. there is also some disk io,
some Tape IO (Backup) and Network io. Memory is fine.
Q: if the cpu is used to its full why is the strongest user "kernel idle"?
Does that mean the kernel ist idle because it is waiting for instructions.
Why then isnt the cpu in WAIT state ?
Samier.
Received on Thu Jun 28 2001 - 10:14:38 NZST