Network transmit queue limits

Posted Aug 12, 2013 4:42 UTC (Mon) by shentino (guest, #76459)
In reply to: Network transmit queue limits by wtanksleyjr
Parent article: Network transmit queue limits

The purpose of the device queue is actually to maximize throughput by keeping the interface busy without having to pester the kernel for new packets.

Especially if the kernel is busy with something else and can't immediately handle an interrupt.

And since the queue is being digested by the hardware itself in many cases, the kernel can't just tinker with it willy nilly.