On 08/23/2012 04:14 PM, Michael Wolf wrote: > This is an RFC regarding the reporting of stealtime. In the case of > where you have a system that is running with partial processors such as > KVM the user may see steal time being reported in accounting tools such > as top or vmstat. This can cause confusion for the end user. To > ease the confusion this patch set adds a sysctl interface to set the > cpu entitlement. This is the percentage of cpu that the guest system is > expected to receive. As long as the steal time is within its expected > range it will show up as 0 in /proc/stat. The user will then see in the > accounting tools that they are getting a full utilization of the cpu > resources assigned to them. > > This patchset is changing the contents/output of /proc/stat and could affect > user tools. However the default setting is that the cpu is entitled to 100% > so the code will act as before. Also another field could be added to the > /proc/stat output and show the unaltered steal time. Since this additional > field could cause more confusion than it would clear up I have left it out > for now. > How would a guest know what its entitlement is? -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
