on what basis chrome dev toolbar is saying 100% when my machine CPU usage is normal, does anyone know how much CPU is allocated to each process of chrome and when chrome dev tools say scripting 100% CPU usage what is the limit of that 100%
Its cpu utilisation of single core. Since ur machine is multi core , task manger is not showing 100% utilization. You can check individual core CPU while chrome dev tool showing u 100% cpu.