+1 for notification from inspector. For inspector with RCA like Vitrage, it is quite straight forward to deduce the VM error from Host failure. Juvonen, Tomi (Nokia - FI/Espoo) <[email protected]>于2017年1月17日 周二18:52写道：
> In my current APEX testing environment Doctor use case takes average about > 290ms (from detection to alarm received by consumer). > > I have been testing this again a bit and here is some data and conclusions. > > In my system the average ”reset state to error Nova API call” duration was: > 248ms > Then I changed the forming of the payload in Nova to contain the > absolutely minimum to our needs (which was the thing I measured to take a > lot of time already back in autumn): > tenant_id > user_id > instance_id > state > With this change I dropped the average ”reset state to error Nova API > call” duration to: > 158ms > > So average of 90ms was taken from Doctor use case execution by this trial > code. > > Anyhow this is still not enough as I would be happy to have total time > under 50ms to reach some kind of Telco expectations (if didn’t calculate > yet, in my testing system the other part of Doctor consumes already ~50ms) > > Note! As I have been restarting nova-api when doing code changes I have > discover a reason for our random failure in Doctor testing. When nova-api > is restarted, the first ”reset state to error Nova API call” usually takes > little over 1second. Also you can get this 3 times as it means first API > call on each controller (and we have 3). Even with my enhanced notification > payload, this will still be an issues, since it cuts just that average of > 90ms (yes, even the API call would take normally let’s say 1050ms, it still > cuts just about the same amount of time ending with total execution over > 1second). I have not looked deeper wither this is some Nova cache or making > the .pyc in first call, just measured this is what happens. I have also > seen the same issue with other environment. > > Note! As there is this radical problem of first ”reset state to error Nova > API call”, I have not included that in my time measures. > > Next thing to try would be the right thing to do: Make the notification > straight from Inspector and get rid of the needles ”reset state to error > Nova API call”. > > Br, > Tomi > > _______________________________________________ > opnfv-tech-discuss mailing list > [email protected] > https://lists.opnfv.org/mailman/listinfo/opnfv-tech-discuss >
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