search for: sarxx

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: > http...

Hello , After upgrading the system from CentOS 7.2.1511 to CenOS 7.3.1611 I see that the average processing time has increased from 5-7% to 12-15% (doubled). Not critical but it is not pleasant. Server as KVM with 5 virtual machines. Someone noticed something similar? If so, how to fix that? Thx.

Hello , After upgrading the system from CentOS 7.2.1511 to CenOS 7.3.1611 I see that the average processing time has increased from 5-7% to 12-15% (doubled). Not critical but it is not pleasant. Server as KVM with 5 virtual machines. Someone noticed something similar? If so, how to fix that? Thx.

...led). Not critical but it is not pleasant. Server as KVM with 5 > virtual machines. Someone noticed something similar? If so, how to fix > that? > > Thx. > > > 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. 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: h...

Hello Subscriber, Thursday, January 19, 2017, 4:44:04 PM, you wrote: > 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. But I collect such statistics in Zabbix. And the numbers and graphs indicate an increase in the load on the CPU (ie System time).

Subscriber wrote: > 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. <snip> That's surprising. That's such an old, low-level daemon/reporting tool.... Was it disabled deliberately? And why?...