Subject: Re: loaded router, excessive getnstimeofday in oprofile

From: Rick Jones <[email-masked]>
Date: Wed, 27 Aug 2008 09:49:10 -0700

Andi Kleen wrote:
>>Those banks really want to crank down on latency - to the point they 
>>start disabling interrupt coalescing.  I bet they'd toss anything out 
>>they could to shave another microsecond.
> 
> 
> This change would actually likely lower their latency.

I'm guessing you mean increase their latency?  I agree, it could - 
depends entirely on the PPS in production I suspect.

rick jones

ftp://ftp.cup.hp.com/dist/networking/briefs/nic_latency_vs_tput.txt

I should probably refresh/update that one of these days