Re: Details after Load Peak was: OT: Performance of VM

2018-02-13 Thread Micky Gough
+1 for atop. Be sure to adjust the sampling interval so it suits your needs. It'll tell you what caused the spike. Alternatively you could probably use sysdig, but I expect that'd result in a fair performance hit if your system is already struggling. Micky On 14 February 2018 at 08:15, Gunnar

Re: Details after Load Peak was: OT: Performance of VM

2018-02-13 Thread Gunnar "Nick" Bluth
Am 06.02.2018 um 15:31 schrieb Thomas Güttler: > > > Am 05.02.2018 um 14:26 schrieb Andreas Kretschmer: >> >> >> Am 05.02.2018 um 14:14 schrieb Thomas Güttler: >>> What do you suggest to get some reliable figures? >> >> sar is often recommended, see >>

Re: Details after Load Peak was: OT: Performance of VM

2018-02-06 Thread Alan Hodgson
On Tue, 2018-02-06 at 15:31 +0100, Thomas Güttler wrote: > But one thing is still unclear. Imagine I see a peak in the chart. The peak > was some hours ago. AFAIK sar has only the aggregated numbers. > > But I need to know details if I want to answer the question "Why?". The peak > has gone

Details after Load Peak was: OT: Performance of VM

2018-02-06 Thread Thomas Güttler
Am 05.02.2018 um 14:26 schrieb Andreas Kretschmer: Am 05.02.2018 um 14:14 schrieb Thomas Güttler: What do you suggest to get some reliable figures? sar is often recommended, see https://blog.2ndquadrant.com/in-the-defense-of-sar/. Can you exclude other reasons like vacuum / vacuum