Cisco Switching/Routing :: High CPU Usage On 3750X - IOS Version 15.0(2)SE
Feb 26, 2013
I have a 2 Cisco 3750X stacked working as CORE switches but not in production yet showing a high CPU utilization and I would like to see with you whether you think this is normal or a IOS upgrade/downgrade should be performed.
I have very low traffic coming through as this is not yet in production:
122222333331111122222222222222222222222221111122222222222222 933333999999999922222777772222277777333339999922222111111111 100 90 80 70 60 50 40 ***** 30 ***** ***** ***** 20 ********************************************************** 10
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Jun 19, 2012
We recently configured a stack of four 48 port 3750-x switches . We are noticing high CPU usage. "Hulc LED process" seems pretty high. This has coincided with VMware servers getting slow and non-responsive at times, perhaps a coincidence, not sure. Below I provided some outputs about how to diagnose it.
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Apr 9, 2013
The process "HL3U bkgrd proce" is causing high CPU usage issues in a switch 3750X-24T-L. The IOS is 15.0.2-SE2.
show platform ip unicast failed route and adjacencies displays a lot of entries, I've seen up to 1200.
After restart HL3U bkgrd proce takes around 10 - 20 % CPU, some hours later 99%.
A coupe of times we got logs like this:
%SYS-3-CPUHOG: Task is running for (2136)msecs, more than (2000)msecs (172/73),process = HL3U bkgrd process.
-Traceback= 0x1BE9C3Cz 0x27E103Cz 0x27E0F64z 0x50DCF8z 0x50DE98z 0x503BD0z 0x4F7718z 0x1FF0A18z 0x1F46DECz 0x1F4816Cz 0x1F48698z 0x1F499C8z 0x1FF15D0z 0x2000430z 0x1FF55B4z 0x1FF5FA4z
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Sep 7, 2012
My 4500 core always in 60 % cpu utility , and when i run #sh proc cpu sorted i find that
55 29725041543795572214 0 39.43% 41.40% 41.39% 0 Cat4k Mgmt LoPri
Which mean that this process is the top one , and when i run #sh platform health i found that Stub-JobEventSchedul
10.00 15.98 10 64 100 500 20 17 12 29269:55 K2 CpuMan Review
30.00 35.60 30 48 100 500 49 46 32 52390:52
Those two process are the top and they already exceed their maximum rang and when i run #sh platform cpu packet statistics i can find that Packets Received by Packet Queue
Queue Total 5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Esmp 5053121950 475 462 340 326
L2/L3Control 244395185 17 8 5 11
Host Learning 67315739 0 0 0 0
L3 Fwd Low 346689615 73 23 14 13
L2 Fwd Low 5336180603 1180 1129 831 804
L3 Rx Low 2287913 0 0 0 0
RPF Failure 7510829 1 0 0 0
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Jul 19, 2011
i have cisco 7600 router , here is show run : Gateway7600#sh run Building configuration...
Current configuration : 4787 bytes
!
! Last configuration change at 09:08:04 UTC Sat Apr 20 2013 by xxxx
!
version 15.2
service timestamps debug datetime msec
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May 15, 2012
I'm having issue with one stubborn process that is consuming nearly all the CPU on all of my switches. I tried googling it, but had no luck. The process is "hulc nrgyz PD di"
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Mar 20, 2012
We have two c6509 budled in VSS. I have noticed randomly high usage of CPU, sometimes up to 99% in peaks. I have found that it can be generated by SNMP engine. So I unconfigure all SNMP things. But situation is the same. I would like to know if this state is OK or not. CPU shows are enclosed in file.
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Feb 3, 2013
I have a one question. I am using Cat3750x-48 switch. Suddenly it has occurred following high CPU log message in Cat3750x-48 switch.
%SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU Utilization(Total/Intr): 62%/0%, Top 3 processes(Pid/Util): 162/40%, 156/10%, 74/1%
What is meaning of PID 162 ?
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Jan 31, 2012
We are facing high CPU Utilization on Cisco 3750X-48P-L without any traffic on it. find the attached log files for 2 separate 3750's stack, we have upgraded the IOS of SW2 from "c3750e-universalk9-mz.122-55.SE3.bin" to "c3750e-universalk9-mz.122-55.SE4.bin" but still we found the same issue with CPU utilization.
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Dec 3, 2012
Seeing very high CPU on one of our 3750X stacks. Usally its around 30% but recently its 70, 80, 90 or maxed at 100% during the main day.IOS version c3750e-universalk9-mz.122-55.SE1.bin.Has a ten gig uplink connected to a nexus 7k and another ten gig connected to another 7k. Running Layer 3 and EIGRP on the 3750X.Is this normal for the CPU?
#sh processes cpu history
5555555554444455555555555555588888666669999888885555577777
8888000001111111111222227777755555666662222222229999977777
100
90 ***** ****
80 ***** ********* *****
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Oct 9, 2012
We have just purchased Cisco 3750X 24 S switches (QTY 2), last week we put them in prodcution in simple Layer 2 mode. No Core, just act as Access switch in order to only check the performace and availibility of switches.
But strange thing I have noticed the highest cpu utilization, cpu sits on 13 to 14% and from historical logs it hit above 60%. I am confused what is happening. Remember to terminate copper connection we have inserted Copper SFP Modules on both switches.
Both switches connected on Layer 2 mode via trunk, in LAN environment we have here 7 3Com 2824 Management switches which are terminated on Copper SFP modules at Cisco 3750X 24 S. All 3Comm Switches uplink are terminated on Cisco 3750 Switch 1, another switch is idle. Whole setup is running on VLAN1 .
Also refer no port in TCP and UDP packets in show ip traffic. any abnormal condition you predict..basically, In near days we plan to make these switches as Core layer and run intervlan routing, HSRP/VRRP and OSPF. But in this cpu usage how we can go ahead until this resolved..
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Feb 25, 2013
i am seeing very high utilization on a random basis on the stack. and the logs indicate me that there is a pattern where there is a stack power cable shows inserted (which was never unplugged) followed by sudden spike in the utilization.
001018: *Mar 6 16:21:22.138: %PLATFORM_STACKPOWER-6-CABLE_EVENT: Switch 4 stack power cable 1 inserted
001019: *Mar 6 18:18:37.982: %SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU
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Jun 11, 2013
We had a stack of 4 qty 3750g running IP base on ver 12.2.32, then installed a 3750x to the stack and upgraded the whole stack to 15.0.2 SE3. In doing so, we noticed that the memory utilization jumped from 60-70% to 83-84%.
We had the same issue occur when upgrading to 15.0.2 SE3 on another stack that was 6 qty 3750g running ip-services, but this one jumped to 90%. On the 6 qty stack, we downgraded to 12.2.55 and the memory util went back down to 60-70%.
On the mixed stack, we replaced the 3750x with another 3750g and downgraded the whole stack to 12.2.55, however, the memory utilization did not drop down. As far as I can tell, no config changes have changed from the original IOS.
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Mar 13, 2011
I am in the process of installing a 3750x (IOS 12.2 (53r) SE2 IP Base) Cisco Catalyst switch in a new network of just 2 PC's (2 hosts, OS windows7 64Bits). I have enabled SVI interfaces with the both hosts installed in 2 different network segments. We then start connectivity test. The response time for the PING command between both hosts remain below 1 millisecond, whereas the response time between the hosts and their correspondent SVI interface is variable, and at all time is higher than 1 millisecond, sometimes it reaches 17 milliseconds. (Note that the switch CPU usage is only 8% at the time of testing) We have performed this same connectivity test changing the 3750x switches and in two different locations obtaining the same results.
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Jul 18, 2012
I am trying to stack a 3750g with a 3750x. At the moment they will not stack with their current IOS as the hardware version is mismatched.
According to various posts this is possible as long as the same IOS is in use. The following IOS are currently in use:
3750g - c3750-ipbaselmk9-tar.122-55.SE5
3750x - c3750e-ipbasek9-mz.150-1.SE3
I have tried to downgrade the IOS on the 'X' to 122-55.SE5 however, i get errors regarding firmware incompatibility.
I am unable to upgrade the IOS on the 'G' to 150-1.SE3, as the size of the IOS image is larger than the available flash (Version 15 IOS for the 3750G (c3750-ipbasek9-mz.150-1.SE3.bin) is 16,074,189 bytes whereas the 3750G has 16MB of flash memory or 15,998,976 bytes total which mean the IOS will not fit).
Has not actually stacked these devices successfully? I understand there may be license implications of upgrading to 15 but at the moment I just want them to stack!
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Jan 14, 2013
I have a customer with a stack of two switches C2960S-24TS-L that are running 12.2(58)SE2 universal K9, we see that the CPU load increase over time, to 95% and stays there reload solves the problem.the process that akes a lot of CPU is also the SNMP ENGINE, I see that it is running 30 minutes on 95% and then 10 minutes on 35%, this is the only stack were we see this problem. Is there also a SNMP bug in this version ?
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Jan 25, 2013
When a physical switchport/routed port has high usage, you can move the link to a higher capacity port, upgrade the port, bond links, etc. What exactly do you do when an SVI has high usage? I guess you could remove some servers from the VLAN, but that doesn't seem like a reasonable solution. What dictates the capacity of an SVI? The backplane of the switch?
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May 29, 2012
I have a 1841 router plugged into a 100M Comcast ethernet connection. My router cpu is really high and users download speed isn't as high as before. Can a 1841 handle 100M circuit with 100 users on it? What would cause the router's cpu to be high? I don't think there are any viruses or malware on the lan.
#sh proc cpu his
r2.leaguecity-toy-startoy 06:06:26 PM Wednesday May 30 2012 PST
111 1 1 1 111 24 1 1 1 1
400369232222544222330359645223283294332688334452308404382236
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Mar 4, 2012
I have a lot of cisco 7206 vxr deviceses. I have a high cpu problem.I have a 7206 vxr g2. I used to use ebgp for three upstream carrier. I used to bgp full route table method. I have about 800 Mbps active traffics and behing the router about 1600 active customers.
How can I trouble shoot this high cpu problem?
#sh int gigabitEthernet 0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is MV64460 Internal MAC, address is 000c.cf1d.d01b (bia 000c.cf1d.d01b)
Description: ***** GW Interface *****
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Jan 29, 2012
I have a Cisco 1921 router and it uses 99% of CPU and i cant seem to spot wich process that is taking up the cpu. I have an interface with several sub-interfaces and i am moving data between two of those subnets, i tried the "ip route-cache same-interface"-command on giga bit ethernet 0/1 with all the sub-interfaces like gigabitethernet 0/1.18 and so on. That did not work.
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Mar 11, 2013
Received this notice from ISP. Does this make sense:We have noticed we are getting a huge number of queries from X.X.X.X and it is showing to be about 98% of the DNS traffic hitting our name servers. It appears that the data consists of reverse lookups to 10.1.0.0 network. It needs to be remediated as soon as possible because it could cause a service interruption.It almost seems as if my router is acting as a DNS server. The isp data consists of reverse lookups to 10.1.0.0 network which would be the internal.
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Jan 31, 2011
I've got a problem with a core 6509E and the multicast.A client has a system with cams for the physical security and they are connected to a vlan with this config:
interface VlanXip address 172.20.167.1 255.255.255.128ip helper-address 172.20.32.7ip pim version 1ip pim sparse-modeendThe thing is that we know that one server that shows the cams at the security office is flooding the network and the CPU CORE is over 95% always:
CPU utilization for five seconds: 99%/39%; one minute: 99%; five minutes: 99%
263 644650276 567873287 1135 51.99% 55.06% 55.35% 0 IP Input
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Jul 12, 2012
I'm seeing very high CPU usage on my new 3560CG-8-PC switch. It's at 61%. How to chase down what's causing it?
I'm seeing a lot of rpf-fail drops. What causes them? How to prevent?
Supervisor TxQueue Drop Statistics
Queue 0: 0
Queue 1: 0
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Jan 8, 2011
I am getting high cpu on 6500 swich running with SUP2 . Below is process cpu output .
****************** show proc cpu ******************
CPU utilization for five seconds: 97.03% one minute: 97.08% five minutes: 97.02%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process--- ----------- ---------- -------- ------- ------- ------- --- ---------------1 335581512 0 0 2.97% 2.92% 2.98% -2 Kernel and Idle2 6 128 1000 0.00% 0.00% 0.00% -2 Flash MIB Updat3 10468247 8763359 192000 0.98% 0.00% 0.00% -2 SynConfig 4 1694917 1210299 3000 0.57% 0.00% 0.00% -2 Statuspoll 5 341501 2798181 2000 0.19% 0.00% 0.00% -2
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Feb 8, 2012
I am having a customer suffering from a vairours RIP problems and i can see these loggs (what do they mean and what to do to aviod that?):
RMS-PE3#show logg | i RIP
Feb 9 14:51:16: %SCHED-3-STUCKMTMR: Sleep with expired managed timer 56528110, time 0x6CBFD5EB5 (00:00:00 ago). -Process= "RIP Router", ipl= 5, pid= 480
.Feb 9 14:53:52: %SCHED-3-STUCKMTMR: Sleep with expired managed timer 4AE46A24, time 0x6CBFFC104 (00:00:00 ago). -Process= "RIP Router", ipl= 5, pid= 480
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Aug 18, 2011
I have an Ironport S370 who is serving 30 users. The actual RAM usage is 78%, how should I check what processes are consuming the RAM?
I think this is the cause that the managemente console is much slower than some weeks before.
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Sep 13, 2011
i keep getting messages from AVG saying they have detected a very high internet usage, first it was with google and then with firefox..they recommended to shut down and restart..anyone could explain what's going on? I'm not downloadin anything..just checking my mail!
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Jan 22, 2012
Recently got a mobile broadband dongle for my laptop, shows 7.2 Mbps speed in the status window and under activity the received bytes is shooting up, as I write this is has went from 25,000,000 to 35,000,000, that's about 10 mg for a few seconds, it does this even when I have no page open, I can't see anything in task manager, I don't know why it's downloading so fast when there's nothing there, also because of this it is slowing my browsing down,
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Mar 22, 2011
I have an issue with 7600 router where CPU goes up to 60-70% and memory is also high. Both due to BGP Router process. URL We are seeing this issue since ISP has upgraded their router 20 days ago. Router also seen following error.I have not reset the BGP session with ISP yet. Is there any way I can supress BGP updates coming from ISP and see if CPU and memory USAGE reduces. IOS version 12.2(33)SRD and RSP720 with PFC 3cXL
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Sep 12, 2012
I have an issue with 7600 router where CPU goes up to 60-70% and memory is also high. Both due to BGP Router process. [URL] According to our baseline it should not be more than 40% at any given time. We see high CPU uptp 70% consistently.
CPU utilization for five seconds: 99%/0%; one minute: 57%; five minutes: 55%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
442 66173704 90234125 733 96.86% 46.09% 46.30% 0 BGP Router
7 509291060 26330202 19342 1.17% 3.90% 2.99% 0 Check heaps
Router has 1 eBGP session with ISP from where it downloads whole IPv4 internet routing table and two IBGP session with other two rotuer. When I look at BGP summary table I see many updates received from ISP and sent out to IBGP neighbors. Also did debug BGP updates to confirm it.
We are seeing this issue since ISP has upgraded their router 20 days ago. Router also seen following error.
%BGP-6-BIGCHUNK: Big chunk pool request 628 for community. Replenishing with malloc
I have not reset the BGP session with ISP yet. Is there any way I can supress BGP updates coming from ISP and see if CPU and memory USAGE reduces. IOS version 12.2(33)SRD and RSP720 with PFC 3cXL
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May 18, 2011
My CAT 4510 switch is showing 99.9% CPU usage almost through out the day. After some analysis i saw that the “Cat4k Mgmt LoPri” process is having 86% CPU utilization. This process is a package that is including multiple process.
Within this package, two processes have been identified which are causing this shock which are “K5L3Unicast Adj Tabl” and “K5 L2 Hardware Addre” .
This indicates that some heavy activity is going on CEF adjacency table and RP MAC Address Table. My current IOS version is 12.2(53)SG
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Jan 28, 2013
I have configured an ASA 5510 and 2960S 48 port switch in a lab environment. I have two laptops connected to seperate subinterfaces with server 2003 as dhcp server for one network. Everything has been working fine as we have been testing the ASA while also testing the csc smm module. When we came in today we noticed the csc module cpu is running at 100% constantly and http traffic is extremely slow. I have not yet received my smartnet contracts from the vendor or I would open a TAC case and I have read on the net that this is a common problem.
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Jan 20, 2013
I recently reboot my asa 5520, I was trying to remove webvpn listening from my outside nic, even though it wasn't configured. [code]I was planning to do another reload without the fast reload option.
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