07-23-2022 03:18 PM
I have about 25 Aps connected to this switch and I was just trying to understand why I have high CPU and if the processes below are indicative of something that might be wrong with the switch or the config. There some traffic going through but nothing wild. only 100 megs out of the 10gig uplink.
Sw101(config-if-range)#do sh proc cpu sort | e 0.0
CPU utilization for five seconds: 86%/3%; one minute: 62%; five minutes: 62%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
273 3854942 163338 23601 13.19% 5.71% 6.59% 0 VMATM Callback
4 8159446 349214 23365 11.60% 3.25% 2.51% 0 Check heaps
248 17716257 8600263 2059 10.33% 6.56% 7.15% 0 Spanning Tree
87 10252043 5578356 1837 4.45% 3.26% 3.27% 0 RedEarth I2C dri
109 2466 737 3345 3.81% 1.32% 0.58% 1 SSH Process
264 600463 110692 5424 1.74% 0.80% 0.87% 0 SpanTree Flush
134 3748387 330344 11346 1.58% 1.21% 1.16% 0 hpm counter proc
124 977796 7998718 122 1.27% 0.80% 0.94% 0 HLFM address lea
258 2131896 2764169 771 0.95% 1.22% 1.49% 0 HULC DAI Process
130 1066571 5530061 192 0.63% 0.45% 0.40% 0 hpm main process
198 1475813 65705 22461 0.47% 0.44% 0.45% 0 HQM Stack Proces
59 346455 330434 1048 0.31% 0.13% 0.12% 0 Per-Second Jobs
230 276024 4822450 57 0.15% 0.12% 0.10% 0 VRRS Main thread
341 375218 719640 521 0.15% 0.16% 0.15% 0 Marvell wk-a Pow
171 622284 1606895 387 0.15% 0.21% 0.21% 0 Hulc Storm Contr
89 547401 2649445 206 0.15% 0.16% 0.16% 0 RedEarth Rx Mana
217 315660 245044 1288 0.15% 0.11% 0.10% 0 CDP Protocol
Sw101(config-if-range)#do sh proc cpu sort | e 0.0
CPU utilization for five seconds: 77%/2%; one minute: 59%; five minutes: 62%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
182 71439099 8180328 8733 19.51% 19.97% 19.93% 0 Hulc LED Process
4 8165459 349466 23365 17.11% 2.80% 2.36% 0 Check heaps
248 17737127 8605509 2061 8.15% 6.88% 7.14% 0 Spanning Tree
88 19106810 3493345 5469 7.51% 6.22% 6.10% 0 RedEarth Tx Mana
87 10259852 5582863 1837 4.31% 2.87% 3.04% 0 RedEarth I2C dri
273 3874886 164126 23609 2.39% 4.97% 6.76% 0 VMATM Callback
258 2136696 2768299 771 1.91% 1.44% 1.57% 0 HULC DAI Process
109 3159 1033 3058 1.75% 0.36% 0.38% 1 SSH Process
134 3751400 330595 11347 0.79% 1.10% 1.13% 0 hpm counter proc
130 1067578 5533513 192 0.63% 0.35% 0.37% 0 hpm main process
447 433074 620915 697 0.63% 0.18% 0.14% 0 LLDP Protocol
269 544066 971445 560 0.47% 0.52% 0.48% 0 IP Host Track Pr
198 1477017 65755 22462 0.47% 0.43% 0.46% 0 HQM Stack Proces
124 980520 8004319 122 0.47% 0.78% 0.94% 0 HLFM address lea
461 340112 812609 418 0.31% 0.13% 0.12% 0 IP SNMP
89 547854 2651591 206 0.31% 0.12% 0.15% 0 RedEarth Rx Mana
264 603139 111179 5424 0.15% 0.73% 0.91% 0 SpanTree Flush
59 346852 330684 1048 0.15% 0.14% 0.13% 0 Per-Second Jobs
217 315947 245217 1288 0.15% 0.10% 0.10% 0 CDP Protocol
oh and btw -- * 1 54 WS-C3750X-48P 15.2(4)E10 C3750E-UNIVERSALK9-M
07-23-2022 03:28 PM - edited 07-23-2022 03:38 PM
1-If you run L2 roaming between AP, then MAC address is move and this make CPU high utilize.
2-check this bug
https://quickview.cloudapps.cisco.com/quickview/bug/CSCtn42790
07-23-2022 05:05 PM
@joshhboss wrote:
182 71439099 8180328 8733 19.51% 19.97% 19.93% 0 Hulc LED Process
HULC and RedEarth are related to STP.
Are there any ports that are flapping continuously?
07-24-2022 11:45 AM
No not really.. honestly everything seems to be working but its just such high utilization. I have about 17 unused ports and they are all shutdown. since shutting them down it looks like switched has idle more on 50%
07-24-2022 12:11 PM
Hello,
shutting down unused ports is a very good idea and usually helps bringing CPU utilization down. That said, a utilization of around 50 percent is normal for these switches.
07-24-2022 04:13 PM
@joshhboss wrote:
since shutting them down it looks like switched has idle more on 50%
<65% for a 3750X is fine.
07-24-2022 12:16 PM
show mac-address-table notification mac-move <- check this command see if there is many MAC move
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