[c-nsp] High memory utilisation on ASR 1004

[Pshem Kowalczyk]

Hi,

We use ASR 1004 for internet peering. I've noticed that despite the
fact that the device should have 4G of RAM (2G for each IOS), it only
reports about 750M:


cisco ASR1004 (RP1) processor with 750908K/6147K bytes of memory.
10 Gigabit Ethernet interfaces
1 Ten Gigabit Ethernet interface
32768K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.

Why is there such a huge difference?

Other thing that I've noticed - after bringing first full feed the
free memory dropped by almost 300M, after bringing two more peers
we're down another 200M, even though the BGP summary doesn't reflect
that:

BGP router identifier 172.16.31.212, local AS number axaz
BGP table version is 1499020, main routing table version 1499020
319336 network entries using 45345712 bytes of memory
1754099 path entries using 119278732 bytes of memory
521347/50531 BGP path/bestpath attribute entries using 39622372 bytes of memory
12 BGP rrinfo entries using 288 bytes of memory
105606 BGP AS-PATH entries using 2952666 bytes of memory
5844 BGP community entries using 579940 bytes of memory
18 BGP extended community entries using 608 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 207780318 total bytes of memory
853191 received paths for inbound soft reconfiguration
BGP activity 451647/132207 prefixes, 2813379/1059265 paths, scan
interval 15 secs

And the last thing - there seem to be a lot of memory allocated to the
SBC process:
(sh processes memory sorted)

Processor Pool Total:  768844520 Used:  666617736 Free:  102226784
 lsmpi_io Pool Total:    6295088 Used:    6294116 Free:        972

 PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process
 247   0  524286824  156132532  372840416          0          0 BGP Router
   0   0  157038032   10062300  127440824          0          0 *Init*
 339   0   74528188        548   74698500          0          0 SBC main process
 160   0   91102924    1746296   74647640          0          0 IP RIB Update
 221   0    7073896     320908    7097036          0          0 BGP Scanner
  90   0    4017044      39640    2498096          0          0 CWAN OIR Handler
  52   0    2309192       2832    1977032          0          0 IOSD ipc task
   1   0     540036       3104     554072          0          0 Chunk Manager
   0   0          0          0     462436          0          0 *MallocLite*
  27   0     802824       2464     436260          0          0 IPC Seat Control
   0   0 1425513440 1426114596     375724    7275888          0 *Dead*
  18   0     299268          0     321720     113400          0 EEM ED Syslog

How can i claim that memory back?

kind regards
Pshem