19. 10. 2017Measuring the Effects of Turbo on VMsBen SerebrinSondertermin: 16:30 Uhr, APB 3105
VMs expect consistent performance, which is in tension with turbo in a datacenter. A lightly-loaded host may provide better VM performance than a heavily-loaded host, and hosts have varying levels of load that are not directly visible to the VMs. Datacenter forensics on performance variation is valuable, but turbo effects were invisible to our performance monitoring trackers. This talk discusses upstream patches that track a VM's per-VCPU turbo history. We describe turbo observations and measuring turbo occupancy per VM in our datacenters. |
28. Oct 2020
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