13-15 November 2018
America/Vancouver timezone

Who stole my CPU? Steal time mitigation at Digital Ocean

15 Nov 2018, 11:00
45m
Junior-Ballroom-D (Sheraton Vancouver Wall Center)

Junior-Ballroom-D

Sheraton Vancouver Wall Center

67

Speakers

Leonid Podolny (DigitalOcean) Vineeth Remanan Pillai (DigitalOcean)

Description

Steal time due to hypervisor overcommitment is a widespread and well-understood phenomena in virtualized environments.
However, sometimes steal appears even when a hypervisor is not overcommitted. This talk will lay out our quest for better utilization of hypervisor hardware by reducing steal. We will talk about kernel heuristics causing it, how we handle disabling these heuristics by implementing a userspace daemon and the issues that arise from this.

Primary authors

Leonid Podolny (DigitalOcean) Vineeth Remanan Pillai (DigitalOcean)

Presentation Materials

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