#StackBounty: #operating-systems #process-scheduling #threads Understanding google's user level threads in kernel threads

Bounty: 50

I came across Paul Turner work on increasing efficiency of M:N threading model. I am not able to grasp the concept at slide 18 of LPC-User-Threading

It says : for two threads A and B :

Minimal scheduling operation.
● B inherits A’s virtual runtime.
● B was not runnable, so we don’t need to remove it from runqueues.
● B holds references on same objects as A

What does virtual runtime mean in this case ?

Will not a random thread B inheriting A‘s environment and referencing same objects cause any problems ?

The video is present at video for the interested.

Get this bounty!!!