Hi all,
We have implemented a python module with ganglia to monitor vmstat
context switches. But we encountered a strange problem that some very
large peak values appears randomly. Normally, the context switches
should be within the scope of 1e2 - 1e5, but we have meet 1e14 or 1e15
values. This didn't happen too often but every 1 - 2 days. The large
values mess up the whole monitor graph because we can't watch the normal
values. Did anyone meet the same problem?
We have tested our python code and thought there should not be an error.
Python code is something like this below:
----
def vm_cs(name):
global num
global sum
lines = os.popen("vmstat 1 4|sed -n '4,$p'")
for line in lines:
line = line.split()
num = num + 1
sum += float(line[11])
sum = sum/num
num = 0
return float(sum)
----
--
Zhong
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