11-17-2011 04:15 PM - edited 03-07-2019 03:27 AM
Hi,
I am a little stuck trying to troubleshoot unusally high cpu on 7600 Platform.This has been going on for many hours and not been causing a problem, but this doesn't seem replicated in our network and I am concerned about the cause.
I have attached some output below, and disabled netflow on interfaces to free some switching CPU. Is there any article which might help me track the cause of this?
We only have routing protocols and 5 static routes to Null 0, so I cant see how this can be a route loop, but willing to stand corrected. Routes are learned from BGP with OSPF/MPLS internally on the network. This switch also connects to access switches on RIP and EIGRP.
No change has been made to this device when this problem started to occur so I am suspecting something about the traffic has changed or there is a rougue user?
Anybody who can shed any light on this would be appriciated.
Thank you.
#sh proc cpu sort | e %.*0.00%.*%
CPU utilization for five seconds: 7%/0%; one minute: 13%; five minutes: 13%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
7 30965684 1634251 18947 4.31% 2.14% 1.60% 0 Check heaps
149 276 567 486 1.27% 0.30% 0.09% 1 SSH Process
327 14604 51638155 0 0.15% 0.16% 0.15% 0 TCP Timer
12 4410044 55050720 80 0.15% 0.19% 0.23% 0 ARP Input
222 1865168 32156320 58 0.15% 0.13% 0.10% 0 IP Input
2 1596 410554 3 0.07% 0.01% 0.00% 0 Load Meter
563 485480 19404642 25 0.07% 0.05% 0.06% 0 BGP I/O
185 1728 61347854 0 0.07% 0.01% 0.00% 0 ACE Tunnel Task
488 1069864 16208110 66 0.07% 0.04% 0.05% 0 Port manager per
257 2832 243982753 0 0.07% 0.07% 0.07% 0 Ethernet Msec Ti
221 1300 61347660 0 0.07% 0.01% 0.00% 0 IP ARP Retry Age
302 534172 3630729 147 0.07% 0.07% 0.07% 0 XDR mcast
577 3843468 21791383 176 0.07% 0.22% 0.21% 0 BGP Router
564 3754744 2777096 1352 0.07% 0.04% 0.03% 0 BGP Task
29 465868 4358622 106 0.00% 0.02% 0.00% 0 IPC Seat Manager
159 411312 34966 11763 0.00% 0.02% 0.00% 0 Per-minute Jobs
160 8652 2054181 4 0.00% 0.01% 0.00% 0 Per-Second Jobs
212 10319444 62680 164636 0.00% 1.13% 1.70% 0 Collection proce
261 1500 61347915 0 0.00% 0.01% 0.00% 0 IPAM Manager
310 980568 1734948 565 0.00% 0.06% 0.07% 0 IP RIB Update
322 8692 2908044 2 0.00% 0.04% 0.05% 0 CEF: IPv4 proces
381 847188 1026384 825 0.00% 0.05% 0.05% 0 HIDDEN VLAN Proc
554 1327956 60254368 22 0.00% 0.05% 0.05% 0 IPv6 Input
569 256056 2063117 124 0.00% 0.01% 0.00% 0 SNMP ENGINE
575 17888 2268957 7 0.00% 0.01% 0.00% 0 OSPF-10 Router
582 44846720 253765 176728 0.00% 1.79% 2.39% 0 BGP Scanner
583 16955364 88650 191266 0.00% 6.32% 5.79% 0 BGP Event
Switch Processor:
#remote command switch sh proc cpu sort | e %.*0.00%.*%
CPU utilization for five seconds: 44%/0%; one minute: 25%; five minutes: 23%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
191 29359288 1878756 15627 19.34% 9.13% 8.16% 0 CFIB LC Main Tas
425 16019868 195075 82122 19.19% 5.51% 4.51% 0 Collection proce
136 158738908 253656109 625 4.04% 7.54% 7.67% 0 slcp process
180 9484452 258279 36722 0.93% 0.50% 0.47% 0 TYFIB Table Mana
283 352592 2062402 170 0.23% 0.07% 0.06% 0 XDR LC Backgroun
366 4353856 2511130 1733 0.15% 0.25% 0.27% 0 Env Poll
406 79264 39578 2002 0.15% 0.02% 0.00% 0 CMFI
426 11736 7441657 1 0.07% 0.02% 0.00% 0 DiagCard5/-1
67 129784 16775780 7 0.07% 0.02% 0.00% 0 SCP async: LCP#7
282 12108 979957 12 0.07% 49.57% 46.45% 0 XDR LC PRIO Crit
52 170268 27083427 6 0.07% 0.04% 0.05% 0 SCP Download Lis
154 12268 13202457 0 0.07% 0.01% 0.00% 0 Heartbeat
428 403028 35359414 11 0.07% 0.07% 0.07% 0 DiagCard7/-1
69 93908 16797971 5 0.00% 0.02% 0.00% 0 SCP async: LCP#8
7 7544016 452185 16683 0.00% 0.28% 0.33% 0 Check heaps
139 41096 3017037 13 0.00% 0.04% 0.05% 0 CEF: IPv4 proces
177 27519724 922433 29833 0.00% 1.26% 1.33% 0 Vlan Statistics
178 36572 1368736 26 0.00% 0.01% 0.00% 0 L2 PI_E consiste
231 11212 60978322 0 0.00% 0.01% 0.00% 0 IP ARP Retry Age
235 13068 62474189 0 0.00% 0.01% 0.00% 0 IPAM Manager
296 80848 467109 173 0.00% 0.02% 0.01% 0 Hardware API bac
214 837640 389447 2150 0.00% 0.04% 0.05% 0 QoS SP Process
429 319396 32800011 9 0.00% 0.06% 0.07% 0 DiagCard8/-1
433 336056 33407136 10 0.00% 0.07% 0.07% 0 DiagCard9/-1
435 99904 16818849 5 0.00% 0.01% 0.00% 0 SCP async: LCP#9
Module 9
#remote command module 9 sh proc cpu sort | e %.*0.00%.*%
CPU utilization for five seconds: 64%/3%; one minute: 39%; five minutes: 29%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
150 50122780 1715427 29218 31.83% 21.60% 15.38% 0 CFIB LC Main Tas
276 25015148 123715 202204 27.17% 11.11% 7.52% 0 Collection proce
222 2978100 1878830 1585 0.46% 0.12% 0.09% 0 XDR LC Backgroun
153 24225104 126189531 191 0.31% 0.44% 0.58% 0 fw_lcp process
262 114600 51249 2236 0.15% 0.04% 0.00% 0 CMFI
7 16263448 903451 18001 0.00% 0.91% 0.75% 0 Check heaps
118 483964 34401 14068 0.00% 0.01% 0.00% 0 Per-minute Jobs
136 36859936 806601 45698 0.00% 1.61% 1.70% 0 Vlan Statistics
146 16604056 256543 64723 0.00% 0.69% 0.75% 0 TYFIB Table Mana
172 1668880 410402 4066 0.00% 0.05% 0.05% 0 QoS SP Process
228 949872 392500 2420 0.00% 0.04% 0.05% 0 Hardware API bac
267 657872 2764849 237 0.00% 0.01% 0.00% 0 CEF: IPv4 proces
Module 8
#remote command module 8 sh proc cpu sort | e %.*0.00%.*%
CPU utilization for five seconds: 47%/3%; one minute: 28%; five minutes: 27%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
150 50511492 1720462 29359 22.63% 14.69% 14.43% 0 CFIB LC Main Tas
277 24961912 124426 200619 15.88% 7.45% 7.03% 0 Collection proce
136 36856280 807534 45641 1.74% 1.75% 1.74% 0 Vlan Statistics
7 16423484 909629 18055 1.58% 0.88% 0.76% 0 Check heaps
222 3227248 1890048 1707 0.39% 0.12% 0.14% 0 XDR LC Backgroun
153 20103744 123558943 162 0.31% 0.24% 0.25% 0 fw_lcp process
262 119292 45833 2602 0.15% 0.04% 0.01% 0 CMFI
133 342732 1461957 234 0.15% 0.02% 0.00% 0 L2 Control Task
147 1065556 3701319 287 0.07% 0.01% 0.00% 0 Online Linecard
118 488432 34392 14201 0.00% 0.01% 0.00% 0 Per-minute Jobs
146 16698832 256647 65066 0.00% 0.70% 0.75% 0 TYFIB Table Mana
172 1780728 410369 4339 0.00% 0.06% 0.05% 0 QoS SP Process
173 355540 69152 5141 0.00% 0.01% 0.00% 0 TCAM Manager pro
228 914376 389772 2345 0.00% 0.03% 0.02% 0 Hardware API bac
Module 7
#remote command module 7 sh proc cpu sort | e %.*0.00%.*%
CPU utilization for five seconds: 59%/3%; one minute: 33%; five minutes: 29%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
150 49730524 1705529 29158 29.18% 17.96% 15.36% 0 CFIB LC Main Tas
275 24977824 124173 201161 23.60% 9.32% 7.52% 0 Collection proce
136 37196096 805087 46202 1.73% 1.74% 1.74% 0 Vlan Statistics
222 2840452 1859748 1527 0.47% 0.20% 0.14% 0 XDR LC Backgroun
262 117196 51928 2256 0.15% 0.04% 0.00% 0 CMFI
153 25529680 104373143 244 0.15% 0.22% 0.22% 0 fw_lcp process
173 373564 69144 5402 0.07% 0.01% 0.00% 0 TCAM Manager pro
7 16666812 919009 18135 0.00% 0.64% 0.67% 0 Check heaps
146 16798576 256376 65523 0.00% 0.72% 0.76% 0 TYFIB Table Mana
172 1676900 410386 4086 0.00% 0.05% 0.05% 0 QoS SP Process
228 768808 397244 1935 0.00% 0.02% 0.00% 0 Hardware API bac
11-23-2011 03:27 PM
Hi Peter,
The two processes that are taking up CPU in all the outputs you have pasted are"CFIB LC Main Tas" and "Collection proce".
Collection proce : This is the collection process which called the Background process bg_process() to
get the context of a given process. This would happen whenever there is *something*
to do. In this case there must be another process (possibly cfib_lc_process) that
called the collection process. CFIB LC Main Task :
This is cfib_lc_process which processes events from other local processes and icc
messages from RP. In this regards, possibly there are FIB entries that are changing
which is triggering these continuous updates. Check the output of 'show cef events'
from both RP and SP, which may give us additional information on what CEF is doing.
Regards,
Barun
11-23-2011 03:55 PM
OK,
I have the outputs below but I see no entries since the last reboot
#sh cef events
% Command accepted but obsolete, unreleased or unsupported; see documentation.
Oct 25 05:49:39.315: SubSys ipv4fib_ios_def_cap init
Oct 25 05:49:39.315: SubSys ipv4fib_rp_def_cap init
Oct 25 05:49:39.327: SubSys ipv6fib_ios_def_cap init
Oct 25 05:49:39.327: SubSys ipv6fib_rp_def_cap init
Oct 25 05:50:14.515: FS_REG IPRM(0 - ft 0xBBDDA50) - ok
Oct 25 05:50:14.515: FS_REG NetFlow(1 - ft 0xBBDDA50) - ok
Oct 25 05:50:14.515: FS_REG Broker(2 - ft 0xBBDDA50) - ok
Oct 25 05:50:14.515: FS_REG MPLS LFD(3 - ft 0xBBDDA50) - ok
Oct 25 05:50:14.515: Inst unknown -> RP
Oct 25 05:50:14.515: SubSys fib_ios_chain init
Oct 25 05:50:14.715: FS_REG NetFlow(1 - ft 0xBBF6AEC) - ok
Oct 25 05:50:14.715: FS_REG Broker(2 - ft 0xBC15F8C) - ok
Oct 25 05:50:14.759: FS_REG MPLS LFD(3 - ft 0xC7D75F0) - ok
Oct 25 05:50:14.759: FS_REG IPRM(0 - ft 0xC7F101C) - ok
Oct 25 05:50:14.759: FS_REG NetFlow(1 - ft 0xBC178E0) - ok
Oct 25 05:50:14.767: FS_REG MPLS LFD(3 - ft 0xC1A3700) - ok
Oct 25 05:50:14.767: FS_REG IPRM(0 - ft 0xC1A5478) - ok
Oct 25 05:50:15.203: SubSys fib init
Oct 25 05:50:15.211: Walk recalc o/p chains for IPv4
Oct 25 05:50:15.211: Walk recalc o/p chains for IPv6
Oct 25 05:50:15.211: SubSys fib_ios init
Oct 25 05:50:15.215: SubSys fib_rp init
Oct 25 05:50:15.227: SubSys ipv4fib init
Oct 25 05:50:15.227: SubSys fib_ios_if init
Oct 25 05:50:15.231: SubSys ipv4fib_ios init
Oct 25 05:50:15.231: Flag Common CEF enabled set to yes
Oct 25 05:50:15.231: Flag IPv4 CEF enabled set to yes
Oct 25 05:50:15.231: Flag IPv4 CEF switching enabled set to yes
Oct 25 05:50:15.231: Flag IPv4 dCEF enabled set to yes
Oct 25 05:50:15.231: GState CEF enabled
Oct 25 05:50:15.235: SubSys ipv6fib_ios init
Oct 25 05:50:15.235: SubSys fib_ios_table init
Oct 25 05:50:15.235: SubSys ipv4fib_util init
Oct 25 05:50:15.235: SubSys ipv4fib_rp init
Oct 25 05:50:15.235: SubSys fib_lc_if_broker init
Oct 25 05:50:15.235: SubSys fib_rrp init
Oct 25 05:50:15.355: SubSys ipv6fib_rp init
Oct 25 05:50:15.355: SubSys ipv6fib_issu init
Oct 25 05:50:15.359: SubSys ipv4fib_les init
Oct 25 05:50:15.359: SubSys cef_push_issu init
Oct 25 05:50:15.359: SubSys fib_issu_utils init
Oct 25 05:50:15.359: SubSys fibhwidb_issu init
Oct 25 05:50:15.359: SubSys fibidb_issu init
Oct 25 05:50:15.363: SubSys ipv4fib_issu init
Oct 25 05:50:16.927: Process Background created
Oct 25 05:50:16.927: Flag IPv4 CEF running set to yes
Oct 25 05:50:16.927: Walk re-resolve all paths
Oct 25 05:50:16.927: Process Background event loop enter
Oct 25 05:50:16.931: Flag IPv4 dCEF running set to yes
Oct 25 05:50:16.931: GSB Enabled
Oct 25 05:50:16.935: Process RP IPC created
Oct 25 05:50:16.935: Process RP IPC event loop enter
Oct 25 05:50:36.583: IPv6adm disabled -> enabled and distributed
Oct 25 05:50:36.643: IPv6opr init -> running
Oct 25 05:50:36.643: IPv6opr running -> dist init
Oct 25 05:50:36.643: IPv6opr dist init -> dist running
#remote command switch sh cef events
% Command accepted but obsolete, unreleased or unsupported; see documentation.
Oct 25 05:50:15.997: Inst unknown -> LC
Oct 25 05:50:15.997: FS_REG IPRM(0 - ft 0xA0FE650) - ok
Oct 25 05:50:15.997: FS_REG NetFlow(1 - ft 0xA0FE650) - ok
Oct 25 05:50:15.997: FS_REG Broker(2 - ft 0xA0FE650) - ok
Oct 25 05:50:15.997: FS_REG MPLS LFD(3 - ft 0xA0FE650) - ok
Oct 25 05:50:16.001: FS_REG NetFlow(1 - ft 0xA1176EC) - ok
Oct 25 05:50:16.001: FS_REG MPLS LFD(3 - ft 0xA149504) - ok
Oct 25 05:50:32.805: FS_REG NetFlow(1 - ft 0xA0F2688) - ok
Oct 25 05:50:32.805: FS_REG MPLS LFD(3 - ft 0xA160178) - ok
Oct 25 05:50:33.285: SubSys fib init
Oct 25 05:50:33.293: Walk recalc o/p chains for IPv4
Oct 25 05:50:33.293: Walk recalc o/p chains for IPv6
Oct 25 05:50:33.293: SubSys ipv4fib init
Oct 25 05:50:33.293: SubSys ipv4fib_lc init
Oct 25 05:50:33.301: SubSys fib_lc init
Oct 25 05:50:33.309: SubSys fib_lc_if_broker init
Oct 25 05:50:33.309: SubSys ipv4fib_util init
Oct 25 05:50:33.309: SubSys cef_push_issu init
Oct 25 05:50:33.309: SubSys fib_issu_utils init
Oct 25 05:50:33.309: SubSys fibhwidb_issu init
Oct 25 05:50:33.309: SubSys fibidb_issu init
Oct 25 05:50:33.309: SubSys ipv4fib_issu init
Oct 25 05:50:33.309: SubSys ipv6fib_issu init
Oct 25 05:50:40.325: Process LC IPC created
Oct 25 05:50:40.325: Process LC IPC event loop enter
Oct 25 05:50:43.241: GSB Enabled
Oct 25 05:50:43.241: GSB Registered Adjacency update, mask : 7
Oct 25 05:50:43.241: GSB Registered IPv4 table broker, mask : 7,9
Oct 25 05:50:43.241: GSB Registered IPv6 table broker, mask : 7,9-10
Oct 25 05:50:43.245: Flag Common CEF enabled set to yes
Oct 25 05:50:43.245: Flag IPv4 CEF enabled set to yes
Oct 25 05:50:43.245: Flag IPv4 dCEF running set to yes
Oct 25 05:50:43.245: GState CEF enabled
Oct 25 05:50:43.253: Process LC Stats created
Oct 25 05:50:43.253: Process LC Stats event loop enter
Oct 25 05:50:43.257: Process Background created
Oct 25 05:50:43.257: Flag IPv4 CEF running set to yes
Oct 25 05:50:43.257: Walk re-resolve all paths
Oct 25 05:50:43.257: Process Background event loop enter
Oct 25 05:50:43.261: IPv6adm disabled -> enabled and distributed
Oct 25 05:50:43.465: Flag IPv4 CEF switching running set to yes
Oct 25 05:50:43.469: IPv6opr init -> running
Oct 25 05:50:43.469: IPv6opr running -> dist init
Oct 25 05:50:43.469: IPv6opr dist init -> dist running
sh ip cef events also doesn't mean much to me:
Nov 23 23:31:35.784: [v4:Default] 141.170.64.0/19'05 FIB mod src RIB [OK]
Nov 23 23:31:35.784: [v4:Default] 141.170.96.0/22'05 FIB mod src RIB [OK]
Nov 23 23:31:35.784: [v4:Default] 141.170.100.0/23'05 FIB mod src RIB [OK]
Nov 23 23:31:35.948: [v4:Default] 86.104.160.0/21'05 FIB mod src RIB [OK]
Nov 23 23:31:35.948: [v4:Default] 193.25.104.0/23'05 FIB mod src RIB [OK]
Nov 23 23:31:38.856: [v4:Default] 88.222.100.0/22'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:38.856: [v4:Default] 88.222.104.0/22'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:39.032: [v4:Default] 203.84.136.0/23'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:39.456: [v4:Default] 109.200.16.136/32'05 FIB add src RR [OK]
Nov 23 23:31:39.456: [v4:Default] 109.200.16.137/32'05 FIB mod src RR [Ignr]
Nov 23 23:31:39.456: [v4:Default] 31.3.224.0/19'05 FIB mod src RIB [OK]
Nov 23 23:31:40.064: [v4:Default] 77.245.64.0/20'05 FIB mod src RIB [OK]
Nov 23 23:31:40.064: [v4:Default] 80.84.48.0/20'05 FIB mod src RIB [OK]
Nov 23 23:31:40.064: [v4:Default] 203.84.136.0/23'05 FIB mod src RIB [OK]
Nov 23 23:31:40.064: [v4:Default] 218.32.58.0/24'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:40.272: [v4:Default] 80.243.176.0/20'05 FIB mod src RIB [OK]
Nov 23 23:31:40.272: [v4:Default] 81.94.192.0/20'05 FIB mod src RIB [OK]
Nov 23 23:31:40.476: [v4:Default] 109.73.64.0/20'05 FIB mod src RIB [OK]
Nov 23 23:31:40.476: [v4:Default] 109.200.0.0/19'05 FIB mod src RIB [OK]
Nov 23 23:31:40.476: [v4:Default] 218.32.58.0/24'05 FIB mod src RIB [OK]
Nov 23 23:31:40.880: [v4:Default] 149.3.128.0/21'05 FIB mod src RIB [OK]
Nov 23 23:31:40.880: [v4:Default] 149.3.136.0/22'05 FIB mod src RIB [OK]
Nov 23 23:31:41.080: [v4:Default] 91.103.56.0/24'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:41.284: [v4:Default] 188.227.160.0/19'05 FIB mod src RIB [OK]
Nov 23 23:31:41.692: [v4:Default] 194.24.236.0/24'05 FIB mod src RIB [OK]
Nov 23 23:31:41.692: [v4:Default] 194.24.237.0/24'05 FIB mod src RIB [OK]
Nov 23 23:31:42.096: [v4:Default] 80.83.128.0/24'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:42.096: [v4:Default] 80.83.128.0/20'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:42.096: [v4:Default] 80.83.132.0/24'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:42.096: [v4:Default] 80.83.142.0/24'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:42.096: [v4:Default] 80.241.248.0/24'05 FIB add src RIB (ins) [OK]
Nov 23 23:31:42.096: [v4:Default] 91.103.56.0/24'05 FIB mod src RIB [OK]
Nov 23 23:31:42.096: [v4:Default] 91.184.106.0/24'05 FIB add src RIB (ins) [OK]
Is this any help?
Thank you for helping me.
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