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0 pointsjstarks6y ago0 comments

Maybe this is true for AWS VMs that use Xen. I believe that Linux VMs on Azure do not have this problem, since they use the Hyper-V reference time page, which can be queried from the vDSO.

0 comments

robbjuly6y ago

I believe newer generation AWS VMs, like C5, use kvm clock source now and not xen. On the older ones switching to tsc speeds up things.

j / k navigate · click thread line to collapse

0 pointsjstarks6y ago0 comments

Maybe this is true for AWS VMs that use Xen. I believe that Linux VMs on Azure do not have this problem, since they use the Hyper-V reference time page, which can be queried from the vDSO.

0 comments

robbjuly6y ago

I believe newer generation AWS VMs, like C5, use kvm clock source now and not xen. On the older ones switching to tsc speeds up things.

j / k navigate · click thread line to collapse