Re: [PATCH] [1/4] /dev/random: Fix latency in rekeying sequence number

Lee Revell
2004-08-20T05:09:38Z

On Fri, 2004-08-20 at 00:57, Theodore Ts'o wrote:
> Based on reports from Ingo's Latency Tracer that the TCP sequence number
> rekey code is causing latency problems, I've moved the sequence number
> rekey to be done out of a workqueue.
>

This patch does not actually fix the problem, as 3-700usecs is still
spent in the spinlocked region, this just causes it to be done out of a
workqueue. It reduces the incidence of problems, but for latency
sensitive applications the worst-case is the important one.

Lee