Oracle Linux System Stops Responding for a Brief Period every 10 Minutes
in Linux
Applies to:
Linux
Symptoms
- Every 10 minutes, multiple operations in Oracle Linux environments seem to stop responding for a small period – this can be seen when executing simple commands like ls, pinging other servers, etc. Other that those slight “freezes” no other errors can be observed and there is no observable increase in general system load.
- It can be seen from
/proc/buddyinfothat the system memory is fragmented, with only a small number of higher order memory segments free, e.g.:
$ cat /proc/buddyinfo ... Node 0, zone Normal 453952 173139 34818 12833 3094 1186 81 0 1 1 0
In the above example, it can be seen the system has 0 free blocks of the largest order and only 0-1-1 for the next larger order ones. So almost no memory segments larger than 256KB are available.
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