[c-nsp] memory usage after upgrading from 12.0T to 12.2S

Jon Lewis jlewis at lewis.org
Fri Nov 17 10:28:11 EST 2006


On Fri, 17 Nov 2006, Marco d'Itri wrote:

> After upgrading a 7600 NPE-300 from 12.0T to 12.2(25)S11 I noticed that
> it can barely fit one full view (there are ~16 MB free) while before the
> upgrade it carried two full views and a ~20000 other routers from peers.

s/7600/7206vxr/ ?

> What causes this huge increase in memory usage? Is it platform-specific?
> Has the RAM usage increased so much from 1 to 11?

I don't have an answer to that.  We're still running older 12.2S relases.

> If there is no workaround, can somebody recommend an earlier release of
> 12.2S which will let me have two full views on a NPE-300?
> Pruning the routes received is not an option.

You can scavenge up to 32MB of RAM from I/O memory.  This is stretching 
out the useful life of sub-NPE400's a bit longer.

memory-size iomem 32

You'll have to do a reload after applying.

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  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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