Re: [patch] voluntary-preempt-2.6.8.1-P8

K.R. Foley
2004-08-24T13:49:10Z

Lee Revell wrote:
> On Tue, 2004-08-24 at 01:41, Ingo Molnar wrote:
>
>>* Lee Revell <rlrevell@joe-job.com> wrote:
>>
>>
>>>> - reduce netdev_max_backlog to 8 (Mark H Johnson)
>>>
>>>On my system this setting has absolutely no effect on the skb related
>>>latencies. [...]
>>
>>it has an effect on input queue length. Output queue lengths can be
>>reduced via 'ifconfig eth0 txqueuelen 8'.
>>
>
>
> OK. With both of these set to 4, the largest latency I was able to
> generate by ping flooding was 253 usecs.
>

Even with both of these set to 4, I still get similar results ~647 usec :(

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