Load is high after compute reboot

Issue

• We noticed that load is higher for compute that have rebooted compared to other compute that have not. See CPU_load_1min.jpg graph for example. Compute NOVA003 and NOVA004 were rebooted as part of a failover exercice. What can explain that the load is that high when they go back online and that it stays like that. Load was relatively low before reboot.

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[root@nova003 ~]# who -b
         system boot  2020-08-03 18:42
[root@nova003 ~]# top -c
top - 17:02:09 up 42 days, 22:19,  1 user,  load average: 18.60, 18.41, 18.99
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[root@nova004 ~]# who -b
         system boot  2020-08-20 04:18
[root@nova004 ~]# top -c
top - 17:01:37 up 26 days, 12:43,  1 user,  load average: 8.08, 8.56, 8.32
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