[c-nsp] Enabling IPv6 on 2951 with VRF consumed 240MB of RAM. Why?

Jay Nakamura zeusdadog at gmail.com
Tue Jan 25 19:44:09 EST 2011


So, here is top part of sh proc mem sorted

 PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process
 310   0 1746803856  971712708  450082968          0          0 BGP Router
 158   0  212638192   94411816  121685252          0          0 IP RIB Update
  83   0  736073272 4103108932   79536900          0          0 BGP Scanner
   0   0  189564756   98708008   73904172          0          0 *Init*

And here is one from a very similarly configured router without IPv6 configured

 304   0 2261872496 1184611460  322133152          0          0 BGP Router
   0   0  203197580  101370688   74960344          0          0 *Init*
 158   0  129733184   67410676   61083004          0          0 IP RIB Update
 194   0    8627476 2168402988    2941908          0          0 BGP Scanner
   1   0   66030312   64166728    1936852          0          0 Chunk Manager
   0   0 2118799528 2123952492     688840    3534604          0 *Dead*
 253   0  975796720  915434860     547712          0          0 OSPF-1 Router



2011/1/25 Łukasz Bromirski <lukasz at bromirski.net>:
> On 2011-01-25 20:52, Jay Nakamura wrote:
>
>>                 Head    Total(b)     Used(b)     Free(b)   Lowest(b)
>>  Largest(b)
>> Processor   117804CC   793246516   716103208    77143308    76800456
>>  76068796
>>
>> This is without taking any routes or putting any IPv6 IP on the
>> interfaces.
>>
>> Is this normal?  Is it pre-allocating something?  Is there a way to
>> some how reduce the usage?  We are in the process of adding memory but
>> I will feel more comfortable knowing what ate up that much memory.
>
> Show the 'show proc mem sorted'.
>
> --
> "There's no sense in being precise when |               Łukasz Bromirski
>  you don't know what you're talking     |      jid:lbromirski at jabber.org
>  about."               John von Neumann |    http://lukasz.bromirski.net
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