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тАО12-03-2008 12:09 PM
тАО12-03-2008 12:09 PM
Hi,
We have a superdome with 128 cpus in which 96 are active.OS version is 11.31. when issueing the command uptime we see 1.34 1.20 1.20, while in glance ( v4.60) we see total cpu utilization ( in the upper bar) of cpu is 86% .
my question is how come that the overall cpu usage is less then 100% and yet the the load is more then 1.
thanks,
Reuven
We have a superdome with 128 cpus in which 96 are active.OS version is 11.31. when issueing the command uptime we see 1.34 1.20 1.20, while in glance ( v4.60) we see total cpu utilization ( in the upper bar) of cpu is 86% .
my question is how come that the overall cpu usage is less then 100% and yet the the load is more then 1.
thanks,
Reuven
Reuven
Solved! Go to Solution.
3 REPLIES 3
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тАО12-03-2008 06:51 PM
тАО12-03-2008 06:51 PM
Solution
Hi Reuven:
You don't offer the value for you your glance sample/refresh time. I assume that you are running it at 5-10 seconds. The first of the three 'uptime' values is a one-minute average, so that says that the *average* queue depth during the last 60-seconds was ~ 1.34. It ia quite poasible that during the current few second interval this has dropped to ~ 0.86. I don't consider this significantly different in this context.
Regards!
...JRF...
You don't offer the value for you your glance sample/refresh time. I assume that you are running it at 5-10 seconds. The first of the three 'uptime' values is a one-minute average, so that says that the *average* queue depth during the last 60-seconds was ~ 1.34. It ia quite poasible that during the current few second interval this has dropped to ~ 0.86. I don't consider this significantly different in this context.
Regards!
...JRF...
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тАО12-03-2008 08:15 PM
тАО12-03-2008 08:15 PM
Re: CPU load
uptime(1) and CPU percentage measure completely different things. If you have a valid percentage, ignore the bogus/useless uptime.
uptime measures the run queue length. This may be long if lots of processes are continually being created.
uptime measures the run queue length. This may be long if lots of processes are continually being created.
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тАО12-04-2008 11:58 AM
тАО12-04-2008 11:58 AM
Re: CPU load
thanks,
Reuven
Reuven
Reuven
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