[c-nsp] GSR E2 linecard performance woes

[David Freedman]

Hiya,

AFAIK, the cisco "marketing" packet rate figure for the GSR120XX E2 
linecards is 4MPPS.

I'm running a 3GE E2 linecard in a 12012 with the following features:


Global -

access-list compiled


Port 1 -

- Ingress ACL (7 lines)
- Egress ACL (7 lines)
- netflow sampling (interval = 1/1000)
- sparse pim
- 120MB/Sec ingress
- 190MB/Sec egress
- 39Kpps ingress
- 34Kpps egress


Port 2 -

- Ingress ACL (7 lines)
- Egress ACL (7 lines)
- netflow sampling (interval = 1/1000)
- sparse pim
- 320MB/Sec ingress
- 320MB/Sec egress
- 49Kpps ingress
- 77Kpps egress

Port 3 -

- Ingress ACL (7 lines)
- Egress ACL (7 lines)
- netflow sampling (interval = 1/1000)
- sparse pim
- MPLS (tag-switching) with NO TE
- 532MB/Sec ingress
- 513MB/Sec egress
- 120Kpps ingress
- 97Kpps egress


The same ACL is used both ingress and egress on all ports.


Now look at this:

#execute-on slot 5 sh proc cpu | exc 0.00
========= Line Card (Slot 5) =========

CPU utilization for five seconds: 94%/73%; one minute: 85%; five 
minutes: 84%
  PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
    4   172497132   1297743     132922  1.53%  0.51%  0.55%   0 BFLC PSA ACL
   10    59944212  62202985        963  0.07%  0.14%  0.13%   0 CEF LC 
IPC Backg
   21   114470916  13418571       8530  0.23%  0.23%  0.22%   0 
Per-Second Jobs
   46    43622128  66352970        657  0.23%  0.29%  0.29%   0 Queue Mgr
   59  2177980408   6086199     357858 18.19%  7.89%  7.70%   0 TAG 
Stats Backgr


Why is the card working so hard?
Is the marketing data that far off?
or am I doing something known to degrade the performance of the card?

Removing the netflow and PIM doesn't really affect the CPU interrupt 
percentage much.....

Here is the sh diag for the slot:



SLOT 5  (RP/LC 5 ): 3 Port Gigabit Ethernet
   MAIN: type 68,  800-6376-05 rev B0
         Deviation: 0
         HW config: 0x00    SW key: 00-00-00
   PCA:  73-4775-07 rev C0 ver 2
         Design Release 2.0  S/N XXXXXXXXXX
   MBUS: Embedded Agent
         Test hist: 0x00    RMA#: 00-00-00    RMA hist: 0x00
   DIAG: Test count: 0x00000003    Test results: 0x00000000
   FRU:  Linecard/Module: 3GE-GBIC-SC=
         Route Memory: MEM-GRP/LC-256=
         Packet Memory: MEM-LC1-PKT-256=
   L3 Engine: 2 - Backbone OC48 (2.5 Gbps)
   MBUS Agent Software version 1.86 (RAM) (ROM version is 2.32)
   ROM Monitor version 16.12
   Fabric Downloader version used 9.3 (ROM version is 9.3)
   Primary clock is CSC 0
   Board is analyzed
   Board State is Line Card Enabled (IOS  RUN )
   Insertion time: 00:09:58 (21w6d ago)
   DRAM size: 268435456 bytes
   FrFab SDRAM size: 134217728 bytes, SDRAM pagesize: 8192 bytes
   ToFab SDRAM size: 134217728 bytes, SDRAM pagesize: 8192 bytes
   0 crashes since restart



System is running  12.0(25)S4 and all linecards had firmware upgraded 
via the "upgrade all" command.

Processor is a fully expanded GRP-B.

Any help (or even confirmation that I am running the card hot) would be 
appreciated.


Thanks,

Dave.