[c-nsp] BGP memory usage: "holding"

[Blake Dunlap]

Can you show a sanitized bgp config global section and the neighbor config
at least as it pertains to assignment, no need to show the actual maps or
anything?

-Blake


On Fri, Aug 30, 2013 at 6:08 PM, Chris Hunt <dharmaChris at gmail.com> wrote:

> Gurus,
>     Y'all were so helpful earlier this week, I thought I'd toss this
> nugget out.  I have an 7200VXR with NPE-400 taking a DFZ from a single
> peer, doing iBGP with a few others.  It has the recommended 512KB of RAM
> but it is occasionally bouncing all peers with the dreaded "Down No
> memory" error.  Yeah, it's time to upgrade this kit.  But while I'm
> doing that I'm curious where all this RAM is going.
>
> !!  12MB free memory = bad, mmmmmkay
> ASBR01#show memory summary
>                 Head    Total(b)     Used(b)     Free(b)   Lowest(b)
> Largest(b)
> Processor   65596368   413570224   401037896    12532328
> 326528      980296
>       I/O    E000000    33554432     2981280    30573152    16207760
> 30090524
>
>
> !!  That's odd, BGP says it's only using ~113MB ("BGP using 118439934
> total bytes of memory")
> ASBR01#show ip bgp summ
> BGP router identifier 10.10.10252, local AS number 65000
> BGP table version is 1664908, main routing table version 1664908
> 459110 network entries using 59225190 bytes of memory
> 756518 path entries using 39338936 bytes of memory
> 129499/80241 BGP path/bestpath attribute entries using 16057876 bytes of
> memory
> 106021 BGP AS-PATH entries using 2841818 bytes of memory
> 11162 BGP community entries using 976042 bytes of memory
> 3 BGP extended community entries using 72 bytes of memory
> 0 BGP route-map cache entries using 0 bytes of memory
> 0 BGP filter-list cache entries using 0 bytes of memory
> BGP using 118439934 total bytes of memory
> Dampening enabled. 272 history paths, 115 dampened paths
> BGP activity 12311725/11852503 prefixes, 87288565/86531934 paths, scan
> interval 60 secs
>
>
> !! But this says BGP Router process is "holding" 254MB, and IP RIB
> Update is using 99MB.
> ASBR01#show proc memory sorted
> Processor Pool Total:  413570224 Used:  401038024 Free:   12532200
>       I/O Pool Total:   33554432 Used:    2981184 Free:   30573248
>
>  PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process
>  245   0 1164760780 2722921792  266540872      21596          0 BGP
> Router
>   87   0 1836812932 3588134492  103955348          0          0 IP RIB
> Update
>    0   0   43672248   14234796   26726316          0          0 *Init*
>
> Does anyone know where all that "Holding" memory is going?  Thanks and
> happy labor day!
>
> -chris
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