interrupt cpu time accounting?
From: Jeff Garzik
Date: Sun Aug 29 2004 - 15:49:57 EST
Does the kernel scheduler notice when a CPU spends a lot of time doing
interrupt processing?
For many network configurations you get the best cache affinity, etc. if
you lock network interrupts to a single CPU. However, on a box with
high network load, that could mean that that CPU is spending more time
processing interrupts than doing Real Work(tm).
Will the scheduler "notice" this, and increasingly schedule processes
away from the interrupt-heavy CPU?
Jeff
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