Jacky Bright wrote:
Hi,
Source : RMF Report
Earlier CPU Contention was around 99%.(when CPU Usage was 100%). Post CPU
Upgradation CPU Contention reduced to around 20%. However CPU Usage is
still
hardlt 50% tht time ... what allfactors contribute for CPU Contention ?
Ideally speaking if CPU Usage is not 100% then there should not be CPU
Contention.
JAcky
Ideally speaking, yes. However you don't know if the CPU was never 100%
busy, all you know is that for the measurement interval it averaged 50%
busy.
Say your interval is 15 minutes. You could have been busy 1/2 of the
time for the whole 15 minutes. Or you could have been at 100% busy for
7.5 minutes and 0% busy for 7.5 minutes (not really, but you hopefully
get the idea).
With a contention at 20%, this means that at least 20% of time each and
every CPU was busy and you had another task that was in and ready.
With a 15 minute interval that means at least 3.75 minutes you were at
100% busy. These are not consecutive minutes, could be 1 minute here,
30 seconds there, 40 seconds someplace else all during the same 15
minute interval.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
