Hello Gianluca,
Wednesday, January 18, 2017, 3:54:15 PM, you wrote:
In the mean time, if you have not disabled it, you should find some collected statistics from sysstat/sar. Look at the sarXX files under /var/log/sa. They should be kept for 30 day by default in CentOS 7.
Unfortunately, on that host such statistics is disabled.
So you can compare cpu, mem, I/O profiles before and after the upgrade. If you have access to Red Hat documents you can look also here: https://access.redhat.com/articles/325783
or in general some articles like this: https://www.blackmoreops.com/2014/06/18/sysstat-sar-examples-usage/ and to create pdf graphics with kSar https://www.thomas-krenn.com/en/wiki/Linux_Performance_Analysis_using_kSar
HIH, Gianluca _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos