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Re: V2.4 policy router operates faster/better than V2.6

To: netdev@xxxxxxxxxxx
Subject: Re: V2.4 policy router operates faster/better than V2.6
From: "Jeremy M. Guthrie" <jeremy.guthrie@xxxxxxxxxx>
Date: Thu, 20 Jan 2005 11:14:46 -0600
Cc: Robert Olsson <Robert.Olsson@xxxxxxxxxxx>
In-reply-to: <16879.58333.266843.335475@xxxxxxxxxxxx>
Organization: Berbee Information Networks
References: <Pine.LNX.4.44.0501071416060.5818-100000@xxxxxxxxxxxxxxxxxxxxx> <200501200837.40734.jeremy.guthrie@xxxxxxxxxx> <16879.58333.266843.335475@xxxxxxxxxxxx>
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On Thursday 20 January 2005 11:01 am, Robert Olsson wrote:
> Jeremy M. Guthrie writes:
>  > >  > 1024 buffers on the RX of eth3.
>  > >  >
>  > >  > echo 86400 > /proc/sys/net/ipv4/route/secret_interval
>  > >  > echo 524288 > /proc/sys/net/ipv4/route/gc_thresh
>  > >
>  > >  rhash_entries?
>  >
>  > I left that at 2.4 million.
>  >
>  > >  > It appears to be cruising right along now.
>  >
>  >  size   IN: hit     tot    mc no_rt bcast madst masrc  OUT: hit     tot 
>  >    mc GC: tot ignored goal_miss ovrf HASH: in_search out_search
>  > 524291     74169     779     0     0     0     0     0         2       0
>  > 1610369017     516       0         0    0           43612          0
>  > 524287     74830     777     0     0     0     0     0         6       0
>  > 0     498       0         0    0           40504          1
>  > 524285     77458     949     0     0     0     0     0         4       0
>  > 0     619       0         0    0           42731          1
>
>  Linear search is under control and number of dst entries very high but
> very constant at the cost of calling GC a number of times second. But I
> don't understand why we do not see any GC ignored. 
When does GC normally ignore?

> Did you ever write to 
> gc_min_interval in proc? 
I left /proc/sys/net/ipv4/route/gc_min_interval at zero.

> Never seen rtstat's like this but it seems to do the job.

More numbers from right now with higher PPS rate.
 size   IN: hit     tot    mc no_rt bcast madst masrc  OUT: hit     tot     mc 
GC: tot ignored goal_miss ovrf HASH: in_search out_search
524291     92192     848     0     0     0     0     0        17       0 
537114631     553       0         0    0           50947         18
524287     95496     846     0     0     0     0     0         4       0 
1610369017     539       0         0    0           52000          4
524293     98503     791     0     0     0     0     0         7       0      
0     525       0         0    0           53119          3
524290     98711     965     0     0     0     0     0         3       0      
0     626       0         0    0           53448          3


-- 

--------------------------------------------------
Jeremy M. Guthrie        jeremy.guthrie@xxxxxxxxxx
Senior Network Engineer        Phone: 608-298-1061
Berbee                           Fax: 608-288-3007
5520 Research Park Drive         NOC: 608-298-1102
Madison, WI 53711

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