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Hi Luca,

On 04/19/2011 05:33 PM, Luca Deri wrote:
> Daniel
> if you have 100k concurrent flows, -w 256000 will do the job
> 
> Luca

Unfortunately not (-w 262144):

19/Apr/2011 17:40:39 [nprobe.c:1459] ---------------------------------
19/Apr/2011 17:40:39 [nprobe.c:1460] Average traffic: [105.431 K pps][68
Mb/sec]
19/Apr/2011 17:40:39 [nprobe.c:1465] Current traffic: [142.662 K pps][88
Mb/sec]
19/Apr/2011 17:40:39 [nprobe.c:1471] Current flow export rate: [12653.5
flows/sec]
19/Apr/2011 17:40:39 [nprobe.c:1474] Flow drops: [export queue too
long=0][too many flows=0]
19/Apr/2011 17:40:39 [nprobe.c:1480] Flow Buckets:
[active=532231][allocated=532231][toBeExported=0][frags=0]
19/Apr/2011 17:40:39 [nprobe.c:1516] Processed packets: 10332302 (max
bucket search: 14)
19/Apr/2011 17:40:39 [nprobe.c:1519] Flow Collection: [collected pkts:
0][processed flows: 0]
19/Apr/2011 17:40:39 [nprobe.c:222] Packet stats: 10332424/0 pkts
rcvd/dropped [0.0%] [Last 285324/0 pkts rcvd/dropped]
19/Apr/2011 17:40:42 [nprobe.c:1459] ---------------------------------
19/Apr/2011 17:40:42 [nprobe.c:1460] Average traffic: [105.521 K pps][68
Mb/sec]
19/Apr/2011 17:40:42 [nprobe.c:1465] Current traffic: [108.445 K pps][67
Mb/sec]
19/Apr/2011 17:40:42 [nprobe.c:1471] Current flow export rate: [29935.3
flows/sec]
19/Apr/2011 17:40:42 [nprobe.c:1474] Flow drops: [export queue too
long=0][too many flows=0]
19/Apr/2011 17:40:42 [nprobe.c:1480] Flow Buckets:
[active=605659][allocated=606136][toBeExported=477][frags=0]
19/Apr/2011 17:40:42 [nprobe.c:1516] Processed packets: 10657626 (max
bucket search: 16)
19/Apr/2011 17:40:42 [nprobe.c:1519] Flow Collection: [collected pkts:
0][processed flows: 0]
19/Apr/2011 17:40:42 [nprobe.c:222] Packet stats: 10657745/0 pkts
rcvd/dropped [0.0%] [Last 325321/0 pkts rcvd/dropped]

I know in theory the probability of occurance of list size > 16 should
be quite small.

I'm even more confused about that a obviously too big hash (2^23)
doesn't decrease the list size.

Any suggestions?

Thanks a lot!

Cheers, Dani

- -- 
daniel aschwanden
junior engineer

open systems ag
raeffelstrasse 29
ch-8045 zurich
t: +41 44 455 74 00
f: +41 44 455 74 01
[email protected]

http://www.open.ch
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