[c-nsp] Possible BGP memory leak?

[Ed Ravin]

On a 7513 router running 12.0(S), we're running rather low on memory.
Yes, I know of the futility of fitting two full Internet feeds into 256M,
and I'm working on that, but in the meantime, this looks weird:

Router# show proc mem | inc Hold|BGP
 PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process
 151   0  320352144  140361924  178607164          0          0 BGP Router
 152   0     328008     619156       6984          0          0 BGP I/O
 153   0          0     673324       9984          0          0 BGP Scanner

Is the "BGP Router" process really holding 178 MB of memory?  Why does it
only seem to be 51 MB in the listing below?


Router# show ip bgp summary
[...]
185673 network entries using 20981049 bytes of memory
369703 path entries using 19224556 bytes of memory
73675/35141 BGP path/bestpath attribute entries using 9725100 bytes of memory
63197 BGP AS-PATH entries using 1662392 bytes of memory
4 BGP community entries using 96 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 51593193 total bytes of memory
BGP activity 522211/336538 prefixes, 1394152/1024449 paths, scan interval
[...]