Subject: Re: IFQ_MAXLEN: How large can it be?
To: None <tech-net@NetBSD.org>
From: Christoph Kaegi <kgc@zhwin.ch>
List: tech-net
Date: 11/16/2006 11:58:23
On 16.11-11:49, Manuel Bouyer wrote:
> > 
> > The dropped packets I reported where all on the ipintrq.
> 
> OK, so maybe increasing the input queue size can be of some help to
> absorb bursts. how many interfaces with lots of input traffic do you have ?
> 

I'd say three. Ca. 1 Minute of nload says:

---------------------------- 8< ----------------------------
Device wm0 [111.222.333.1] (1/4):
========================================================================================I
ncoming:                                    Outgoing:
Curr: 2.72 MBit/s                           Curr: 5.74 MBit/s
Avg: 3.51 MBit/s                            Avg: 26.55 MBit/s
Min: 1.23 MBit/s                            Min: 5.52 MBit/s
Max: 26.61 MBit/s                           Max: 79.01 MBit/s
Ttl: 1170.86 MByte                          Ttl: 1726.58 MByte

Device wm1 [111.222.333.2] (2/4):
========================================================================================I
ncoming:                                    Outgoing:
Curr: 5.26 MBit/s                           Curr: 4.90 MBit/s
Avg: 23.51 MBit/s                           Avg: 21.65 MBit/s
Min: 3.85 MBit/s                            Min: 3.65 MBit/s
Max: 72.64 MBit/s                           Max: 71.25 MBit/s
Ttl: 2420.62 MByte                          Ttl: 1757.23 MByte

Device wm2 [111.222.333.3] (3/4):
========================================================================================I
ncoming:                                    Outgoing:
Curr: 6.10 MBit/s                           Curr: 1.97 MBit/s
Avg: 25.31 MBit/s                           Avg: 3.08 MBit/s
Min: 5.35 MBit/s                            Min: 1.18 MBit/s
Max: 80.52 MBit/s                           Max: 9.92 MBit/s
Ttl: 3341.35 MByte                          Ttl: 2307.23 MByte

Device wm3 [111.222.333.4] (4/4):
========================================================================================I
ncoming:                                    Outgoing:
Curr: 0.05 MBit/s                           Curr: 1.43 MBit/s
Avg: 0.37 MBit/s                            Avg: 1.27 MBit/s
Min: 0.00 MBit/s                            Min: 0.00 MBit/s
Max: 2.80 MBit/s                            Max: 9.81 MBit/s
Ttl: 2763.97 MByte                          Ttl: 2053.87 MByte

---------------------------- 8< ----------------------------

-- 
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Christoph Kaegi                                           kgc@zhwin.ch
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