Greetings All, After reading through the code for the usb and vfs core infrastructure, I was wondering if after reading it if I am correct in my notion of there being very little overhead or none at all int these areas of the kernel. This is due to be noticing most drivers and file systems wrap around the core/vfs and therefore the overhead is very little and no need to worry about it like the overhead of the kernel's process structures based off task_struct .Honestly, I could benchmark this area of the kernel but it's hard to remove the file system/drivers interfering with my benchmarks due to me not knowing of any one way to do that. If someone either points me to a benchmark for me to test this or answers it that would be very helpful. Thanks, Nick