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Ip input high cpu using ip pim sparse mode

hello all, I have a problem and I can not resolvover,

when you configure an interface with ip pim sparse-mode to enable multicast, IP INPUT and IPC Seat Manager process also increases and processor consumption

i have a 7609-S witch supervisor RSP720-3C-GE with IOS

(c7600rsp72043_rp-ADVIPSERVICESK9-M), Version 12.2(33)SRE5

interface GigabitEthernet9/2

description Conectado a Fdo de la Mora

mtu 9216

ip address 201.217.63.11 255.255.255.254

logging event link-status

ip pim sparse-mode

load-interval 30

mpls ip

mpls mtu 8992

here is the show proce cpu:

CPU utilization for five seconds: 72%/24%; one minute: 71%; five minutes: 67%

PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process

   2        1136      404870          2  0.00%  0.01%  0.00%   0 Load Meter

   7     6603016      480257      13748  0.00%  0.28%  0.29%   0 Check heaps

  29     1885252    19109009         98 13.75% 13.23% 12.65%   0 IPC Seat Manager

  45      158832     1627879         97  0.07%  0.00%  0.00%   0 EnvMon

  81      231196     4632717         49  1.11%  1.04%  1.01%   0 IPC LC Message H

  86      650644     4182873        155  5.11%  4.90%  4.69%   0 MRIB RP Proxy

  88      614384     1574748        390  0.00%  0.01%  0.00%   0 Compute load avg

  89      405288       34389      11785  0.00%  0.02%  0.00%   0 Per-minute Jobs

  91        1176     5569028          0  0.07%  0.02%  0.00%   0 IGMP Input

100        1760    11526224          0  0.07%  0.07%  0.07%   0 PIM Process

101          92     5433233          0  0.07%  0.02%  0.00%   0 Mwheel Process

103      160132     3666065         43  1.11%  0.99%  0.96%   0 MRIB Trans

106         388    27130072          0  0.07%  0.08%  0.07%   0 MFIB_mrib_write

107      449264     3652275        123  3.19%  2.99%  2.89%   0 MFIB_mrib_read

188        1028    63725836          0  0.07%  0.03%  0.02%   0 ACE Tunnel Task

220        1000    63107906          0  0.00%  0.04%  0.02%   0 IP ARP Retry Age

221   124781224  3165557742         39  8.71%  8.62%  8.24%   0 IP Input

255         144     7905897          0  0.07%  0.00%  0.00%   0 Ethernet Timer C

256        3516   252232511          0  0.15%  0.15%  0.15%   0 Ethernet Msec Ti

260        1096    63107933          0  0.07%  0.02%  0.01%   0 IPAM Manager

275      678364     6457906        105  5.59%  5.32%  5.11%   0 const-mfib-rp Pr

300     2051268     4844327        423  9.03%  9.02%  8.44%   0 XDR mcast

312        5540      771831          7  0.00%  0.02%  0.00%   0 CDP Protocol

316       10880     2394171          4  0.00%  0.01%  0.00%   0 CEF: IPv4 proces

377      811328     1012179        801  0.00%  0.05%  0.05%   0 HIDDEN VLAN Proc

487         304    11239039          0  0.07%  0.01%  0.00%   0 PM Callback

488     3526840    50850725         69  0.00%  0.31%  0.31%   0 Port manager per

549      615276       87315       7046  0.00%  0.03%  0.00%   0 BGP Scanner

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