[c-nsp] OSM memory allocating process question

[Emanuel Popa]

Hi,

We have a 7600 router positioned as border router. We have the full
routing table there. One of the linecards in this router is a
OSM-2OC48/1DPT-SS with 128MB of memory. Unfortunately for us, because
of the large FIB:

CWTLC-Slot1#sh memory allocating-process totals | i FIB 1
0x604CD6A8   30718952     912  FIB 1 path chu
0x604A6E20     133880       4  FIB 1 path chunk pool

the OSM run out of memory and DCEF was disabled:

SLOT 4: Mar 31 07:19:34 UTC: %SYS-2-MALLOCFAIL: Memory allocation of
65536 bytes failed from 0x60170024, alignment 16
SLOT 4: Mar 31 07:19:34 UTC: %FIB-3-NOMEM: Malloc Failure, disabling
DCEF on linecard

ROUTER7600#sh cef linecard 4
CEF linecard slot/cpu 4/0, status disabled
 Sequence number 0, Maximum sequence number expected 0, Seq Epoch 3
 Send failed 0, Out Of Sequence 0, drops 0, Wrong Epoch 0
 Linecard CEF reset 2, reloaded 1
 481596 elements packed in 38228 messages(19378197 bytes) sent
 0 elements cleared
 0/0/0 xdr elements in LowQ/MediumQ/HighQ
 15293/53/503 peak elements on LowQ/MediumQ/HighQ
 Keepalive timer is not running
 Input  packets 25221870610, bytes 12653592553285
 Output packets 2756416929, bytes 1804879415754, drops 0

 CEF Table statistics:
 Table name                Version Prefix-xdr Status
 Default                   11582484     474591 Active, table-disabled

But, the memory allocation on this linecard looks like this:

CWTLC-Slot4#sh memory allocating-process totals
                Head    Total(b)     Used(b)     Free(b)   Lowest(b)  Largest(b)
Processor   6183D880    92022656    48681248    43341408      126888    11549520
      I/O   20000000    16777216     3806952    12970264    12629072    12625400

Allocator PC Summary for: Processor

    PC          Total   Count  Name
0x603F4EC8   20447344       2  CWTLC STAT INFO
0x602D8740    6291568       2  SCP Find Master process
0x602D8A74    3604592       2  SCP Find Master process
0x603F4EB0    3145840       2  Init
0x602A0A20    1500056       1  rp if_info
0x604C18B8    1377432      21  Linecard CEF m
0x604597E4    1179648   12288  Init
0x603F2F2C    1080056       1  fr if_info
[...]

Allocator PC Summary for: I/O

    PC          Total   Count  Name
0x600ECB70    2952320       5  COMM
0x600E6A54    1055392     338  *Packet Data*
[...]

So, the machine allocates aprox. 87MB of memory for the processor and
16MB of memory for I/O opperations. I want to find out two things:

- is there any way to allocate more memory to the processor and less
memory to the I/O?
- can I see the rest of 25MB of memory and the allocation process?

Of course, an upgrade is necessary and will be done eventually...

Thank you,
Emanuel Popa