Re:CEOs Want Their Offices Back
by voidlogic on Monday May 22, 2017 @12:34PM
(#14394937)
>The only thing in my office that works well with interruptions is my CPU.
Slight tangent:
This isn't even true, context switch time has not scaled (equally) with improvements in processing power (IPC, freq and functional-unit parallelism). A PIII in 1999 spent proportionally less of its operating wall time performing a context switch compared to modern processing. Turns out flushing TLBs and the like is not fast. This is why managing interrupts properly is very important on server class hardware.
Slight tangent:
This isn't even true, context switch time has not scaled (equally) with improvements in processing power (IPC, freq and functional-unit parallelism). A PIII in 1999 spent proportionally less of its operating wall time performing a context switch compared to modern processing. Turns out flushing TLBs and the like is not fast. This is why managing interrupts properly is very important on server class hardware.