6500/SUP32 High CPU load & process switching troubles.

Hi!
At one of the nodes used catalyst 6500 with sup32 running software12.2(33)SXH5 , there are problems with high load CPU due to interrapts:
CPU utilization for five seconds: 56%/45%; one minute: 57%; five minutes: 55%
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
   8    67138180   7538435       8906 7.19% 5.74% 5.70%   0 ARP Input
100    17392892    145853     119253 1.35% 1.90% 1.95%   0 HC Counter Timer
89    23849784    388043      61462 0.87% 1.06% 1.11%   0 Compute load avg
196     7210696    749626       9619 0.55% 0.87% 0.85%   0 CEF: IPv4 proces
138     3505932 17454349        200 0.31% 0.44% 0.38%   0 ADJ resolve proc
136     7986672 29865853        267 0.23% 0.35% 0.34%   0 IP Input
181     2713632    106885      25388 0.07% 0.13% 0.11%   0 IPC LC Message H
I installed the SPAN session on RP and found an ordinary network traffic clients (http, etc.), that must be harhware CEF switched.
It is obvious that the traffic enters the process switching:
Interface information:
        Interface IBC0/0(idb 0x454A98F0)
        Hardware is Mistral IBC (revision 5)
        0 minute rx rate 231062000 bits/sec, 40653 packets/sec
        0 minute tx rate 230981000 bits/sec, 40542 packets/sec
        768441545 packets input, 763672035960 bytes
        0 broadcasts received
        763863117 packets output, 763298719016 bytes
        2 broadcasts sent
        0 Inband input packet drops
        0 Bridge Packet loopback drops
        0 Rx packets dropped with Multicast MAC and Unicast IP
        767110946 Packets CEF Switched, 1279 Packets Fast Switched
        0 Packets SLB Switched, 0 Packets CWAN Switched
        Potential/Actual paks copied to process level 1309036/1308996 (40 dropped, 40 spd drops)
        514919227 inband interrupts
        71265 transmit ring cleanups
        514994756 ibl inputs
        71265 total tx interrupts set
            71265 tx ints due to packets outstanding
            0 tx ints due low free buffers in pool
            0 tx ints due to application setting
        tx dma done batch size=32
        buffers free minimum before tx int=4
        mistral ran out of tx descriptors 0 times
        mistral tx interrupt inconsisteny occured 0 times
        Label switched pkts dropped: 0
        Xconnect pkts processed: 0, dropped: 0
        IBC resets   = 2; last at 14:15:03.733 msd Tue Mar 29 2011
-=-
--sup32-TEST###sh ip cef switching statistics
       Reason                          Drop       Punt Punt2Host
RP LES Packet destined for us             0     100098          0
RP LES No adjacency                    7609          0          0
RP LES Incomplete adjacency          979470          0        313
RP LES TTL expired                        0          0       4511
RP LES Discard                         7811          0          0
RP LES Features                     3127605          0     288855
RP LES Unclassified reason              833          0          0
RP LES Neighbor resolution req       507057         58          0
RP LES Total                        4630385     100156     293679
All    Total                        4630385     100156     293679
I took the document https: / / supportforums.cisco.com/docs/DOC-14086, but he could not understand on what basis the traffic enters the process switching.
Some logs:
sup32-TEST###sh cef not-cef-switched
% Command accepted but obsolete, see 'show (ip|ipv6) cef switching statistics [feature]'
IPv4 CEF Packets passed on to next switching layer
Slot No_adj No_encap Unsupp'ted Redirect Receive Options   Access     Frag
RP         0       0      293175        0    99949        0   288300        0
5/0        0       0           0        0        0        0        0        0
or:
sup32-TEST###sh ip cef switching statistics
       Reason                          Drop       Punt Punt2Host
RP LES Packet destined for us             0     100098          0
RP LES No adjacency                    7609          0          0
RP LES Incomplete adjacency          979470          0        313
RP LES TTL expired                        0          0       4511
RP LES Discard                         7811          0          0
RP LES Features                     3127605          0     288855
RP LES Unclassified reason              833          0          0
RP LES Neighbor resolution req       507057         58          0
RP LES Total                        4630385     100156     293679
All    Total                        4630385     100156     293679
The organization of this site is simple enough:
uplink (Vlan24, 2GB EtherChannel) and about 3500 SVI with IP Unnimbered feature and static routes with 32 bit mask for customers, for example:
interface Vlan101
ip unnumbered Loopback0
ip access-group 110 in
end
ip route 192.168.100.101 255.255.255.255 Vlan 101
interface Loopback0
ip address 192.168.100.1 255.255.255.0
ip address 192.168.101.1 255.255.255.0
etc...
Default route is obtained by the EIGRP
The essence of my question: How can I determine the reason the traffic hits the CPU?
I would be grateful for any ideas, ready to provide any diagnostic data.
Thanks for your help.
Regards,
Dmitry

L3Aging is related to NDE(Netflow Data Export). Check for any anomalies.
Also, on a side note, I could not help noticing that you are running 6.1(1b). You might want to go latest 6.4(x) which is general deployment to get various security vulnerability, diagnostic enhancement and other bug fixes.
PS: Remember to rate useful posts.

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RT#show proc cpu sorted | exclude 0.00%
CPU utilization for five seconds: 99%/94%; one minute: 99%; five minutes: 98%
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95     2157484   1814314       1189 3.29% 4.76% 4.68%   0 IP Input
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Regards.

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Sorry I wasn't clear, but when I was asking about "not a lot of traffic", I was wondering about actual volume passing through the 2811.
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11:45:38.8649209    SynTPEnh.exe    3544    RegCloseKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS
11:45:38.8752991    SynTPEnh.exe    3544    RegCreateKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS    Desired Access: Maximum Allowed, Granted Access: All Access
11:45:38.8753153    SynTPEnh.exe    3544    RegQueryValue    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2\TrackPointModeFunction    SUCCESS    Type: REG_DWORD, Length: 4, Data: 17
11:45:38.8753257    SynTPEnh.exe    3544    RegCloseKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS
11:45:38.8901752    SynTPEnh.exe    3544    RegCreateKey    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2    SUCCESS    Desired Access: Maximum Allowed, Granted Access: All Access
11:45:38.8902010    SynTPEnh.exe    3544    RegQueryValue    HKU\S-1-XXX\Software\Synaptics\SynTPEnh\UltraNavPS2\TrackPointModeFunction    SUCCESS    Type: REG_DWORD, Length: 4, Data: 17
Can this driver be optimized?
Also, when I use the TrackPoint to scroll in Firefox or in other applications, scrolling is not as smooth as when I use a simple external mouse with a wheel. Moreover, while scrolling with the TrackPoint, the "scrolling cursor" flickers.
Message Edited by Izmi on 01-17-2009 02:58 AM

Same here, but usually around 10% CPU, Win7 64bit on T431s

6500/SUP32 High CPU load & process switching troubles.

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