On 20.06.2017 14:34, Paolo Bonzini wrote: > > > On 20/06/2017 11:10, Stefan Raspl wrote: >> On 08.06.2017 18:21, Paolo Bonzini wrote: >>> >>> >>> On 07/06/2017 21:08, Stefan Raspl wrote: >>>> It might be handy to display the full history of event stats in some cases. >>>> Since we have that available for debugfs, we offer a respective command to >>>> display what's available. >>>> Note that this command does not toggle - one merely has to reset the stats >>>> via 'r' to do the next best thing to reverting the effect of 't'. >>> >>> It's not clear to me what this does... Can you explain it better? >> >> Sure: >> While debugfs provides the total number of events since system >> start, kvm_stat only displays the number of events since kvm_stat >> was started. Press 't' to display the number of events since the >> system was started. >> Note that this command does not toggle, i.e. pressing it again will >> not restore the number of events since kvm_stat was started. One >> merely has to reset the stats via 'r' to do the next best thing to >> reverting the effect of 't'. >> >> Is that more clear? > > Sorry for the stupid question, when can this be useful? :) When you have several guests running for weeks, and want to have a quick check whether any of the events was triggered in an excessive manner while you weren't looking (via kvm_stat or similar)? Ciao, Stefan
