Output interpreter

Unanswered Question
Aug 24th, 2007

Hi,

There is a tools "Output interpreter" tools can display the potential issue but it is for "register customer" only. The link is following:

javascript:openChildWindow('https://www.cisco.com/cgi-bin/Support/OutputInterpreter/home.pl?style=small&ref_url=http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a00800a70f2.shtml','oi')

Could someone help me to put it and find any potential issue?

Currently, we had two routers, one is in HK and another is in US. We find that the cpu loading in US is below 10%; the CPU loading in HK is over 30%. How do we trace the issue? both of them config are 80% similar. Could you guide me how to locate the issue. thanks

Best regards

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Edison Ortiz Fri, 08/24/2007 - 18:29

SHOW MEMORY NOTIFICATIONS (if any)

INFO: Processor memory utilization is 20.29747%.

INFO: Processor memory or main memory stores the running configuration and routing

tables. The Cisco IOS software executes from main memory.

INFO: The amount of processor memory required by the router is affected by the Cisco

IOS version used, the size of the network and by the access list configurations.

Ensure that an optimal IOS version has been chosen.

INFO: The smallest amount of free processor memory used since the last boot is 95583396

byte(s).

INFO: The size of largest amount of processor memory free block currently available

is 79198900 byte(s).

INFO: For detailed memory analysis with respect to specific processes, consider

pasting "show processes memory" output to Output Interpreter.

INFO: If you are trying to determine the amount of installed memory on your device,

paste the output of "show version" to Output Interpreter.

REFERENCE: For more information see Troubleshooting Memory Problems

Back to top

SHOW PROCESS CPU NOTIFICATIONS (if any)

INFO: Total CPU Utilization is comprised of process and interrupt percentages.

Total CPU Utilization: 28%

Process Utilization: 1%

Interrupt Utilization: 27%

These values are found on the first line of the output:

CPU utilization for five seconds: x%/y%; one minute: a%; five minutes: b%

Total CPU Utilization: x%

Process Utilization: (x - y)%

Interrupt Utilization: y%

Process Utilization is the difference between the Total and Interrupt (x and y).

The one and five minute utilizations are exponentially decayed averages (rather

than an arithmetic average), therefore recent values have more influence on the

calculated average.

INFO: Total CPU Utilization is 28% for the past 5 seconds.

INFO: Total CPU Utilization is 27% for the past 5 minutes.

NOTE: This is an exponentially decayed average rather than an arithmetic average,

therefore recent events have a greater effect than past events.

Compare this CPU value to the baseline or average utilization. If a baseline is

not available, create one by collecting 'show process cpu' outputs during the course

of several days. If available, use the 'show process cpu history' command (available

in IOS 12.2 and higher).

The following processes are causing excessive CPU usage:

PID CPU Time Process

ERROR: No Processes were found having a CPU utilization greater than 10%

NOTE: If there are processes with a utilization greater than 10%, ensure that

there is no line wrapping as this will interfere with the analysis.

REFERENCE: For troubleshooting information, please visit Troubleshooting High

CPU Utilization on Cisco Routers

REFERENCE: For more information, see

High CPU Utilization on Catalyst 2900XL/3500XL Switches

Troubleshooting High CPU Utilization due to Processes

leungcm Fri, 08/24/2007 - 19:20

Hi,

yes, of course. I cannot find your personal email from the "top netpros". Could you give me your email address so that we can send it to you separately. Thanks for your great help.

Best regards

Joseph W. Doherty Fri, 08/24/2007 - 19:19

It's possible the difference in load you're seeing is normal for some of the following reasons:

Are the routers you're comparing identical models? (Different models even in the same series, often vary in the performance. I.e. same work on one router might show 30% load but on a faster router, 10%.)

Are the routers you're comparing running the same traffic load? (Often the primary driver of CPU when you see "interrupt" % nearly the same as the overall load.)

You note the configs are 80% similar, but certain config features can impact overall load. (E.g., differences such as ACL usage, fancy queuing, CEF, etc.)

The information Edison asked for would help with the models (sh ver) and features in use (sh conf), but it might also be helpful if you can also post the stats from all active interfaces while the routers are normally busy.

leungcm Fri, 08/24/2007 - 19:54

Hi,

some question regarding the outpout

---

Total CPU Utilization: x%

Process Utilization: (x - y)%

Interrupt Utilization: y%

---

"Total CPU Utilization" is overall cpu loading, including everything.

"Process Utilization", no any idea, is it ad ho task / job?

"Interrupt Utilization", no any idea

could you have an example for it?

---

Process Utilization is the difference between the Total and Interrupt (x and y).

The one and five minute utilizations are exponentially decayed averages (rather

than an arithmetic average), therefore recent values have more influence on the

calculated average.

----

what does it want to say? is the route normal

or is loading normal?

It would be grateful that you give me the email., we can send you two routers config. R1 is in hk, cpu loading is 30%, R2 is in US, cpu loading is 6%. we compare the config, IOS, model,...etc. the major different is that R1 is 256M and R2 is 512M. Does it cause the CPU loading different? pls advice

Thanks

Best regards

leungcm Fri, 08/24/2007 - 20:00

Hi,

following is the sh ver info. Sorry, they have the same mem size, 256M.

---

--R1 (HK) sh ver ---

Cisco IOS Software, 7301 Software (C7301-JK9S-M), Version 12.4(12), RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2006 by Cisco Systems, Inc.

Compiled Fri 17-Nov-06 18:58 by prod_rel_team

ROM: System Bootstrap, Version 12.3(4r)T4, RELEASE SOFTWARE (fc1)

BOOTLDR: Cisco IOS Software, 7301 Software (C7301-BOOT-M), Version 12.4(5a), RELEASE SOFTWARE (fc3)

hkco7301-01 uptime is 15 weeks, 3 days, 8 hours, 16 minutes

System returned to ROM by power-on

System restarted at 03:39:52 HK Wed May 9 2007

System image file is "disk0:c7301-jk9s-mz.124-12.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

[email protected].

Cisco 7301 (NPE) processor (revision E) with 229376K/32768K bytes of memory.

Processor board ID 74835553

SB-1 CPU at 700MHz, Implementation 1025, Rev 0.2, 512KB L2 Cache

1 slot midplane, Version 2.0

Last reset from power-on

3 Gigabit Ethernet interfaces

1 Serial interface

509K bytes of NVRAM.

62720K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).

32768K bytes of Flash internal SIMM (Sector size 256K).

Configuration register is 0x2102

--R2 (US) sh ver---

Cisco IOS Software, 7301 Software (C7301-JK9S-M), Version 12.4(12), RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2006 by Cisco Systems, Inc.

Compiled Fri 17-Nov-06 18:58 by prod_rel_team

ROM: System Bootstrap, Version 12.3(4r)T4, RELEASE SOFTWARE (fc1)

BOOTLDR: Cisco IOS Software, 7301 Software (C7301-BOOT-M), Version 12.4(5a), RELEASE SOFTWARE (fc3)

hkco7301-01 uptime is 15 weeks, 3 days, 8 hours, 17 minutes

System returned to ROM by power-on

System restarted at 03:39:52 HK Wed May 9 2007

System image file is "disk0:c7301-jk9s-mz.124-12.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

[email protected].

Cisco 7301 (NPE) processor (revision E) with 229376K/32768K bytes of memory.

Processor board ID 74835553

SB-1 CPU at 700MHz, Implementation 1025, Rev 0.2, 512KB L2 Cache

1 slot midplane, Version 2.0

Last reset from power-on

3 Gigabit Ethernet interfaces

1 Serial interface

509K bytes of NVRAM.

62720K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).

32768K bytes of Flash internal SIMM (Sector size 256K).

Configuration register is 0x2102

leungcm Fri, 08/24/2007 - 20:09

Hi,

can we find the cpu loading distribution? if no, how do we trace which processes consume the cpu loading?

Best regards

Joseph W. Doherty Fri, 08/24/2007 - 21:05

For your 3 prior posts:

"could you have an example for it? "

From your sample:

CPU utilization for five seconds: 28%/27%; one minute: 28%; five minutes: 27%

The first % and first 28% (from 28%/27%) is overall CPU load = everything the CPU is doing.

The next % and first 27% (from 28%/27%) is interrupt CPU load = CPU managing the hardware while forwarding packets.

You can not get an additional breakdown (that I'm aware of).

The difference, 1% (28 - 27) is CPU load from software processes. The sum of the 5Sec column, approximately

.96% from your sample or approximately 1%

"is the route normal or is loading normal? "

Insufficient information, but interrupt % in your sample being near total % is usually good.

"It would be grateful that you give me the email"

You may use email address attached to my profile.

Need sh ver, sh conf, and sh int of all active interfaces (when routers busy)

The two sh vers you provided appear from the same router, hkco7301-01?

"can we find the cpu loading distribution?"

Except for software process, believe you can not.

"if no, how do we trace which processes consume the cpu loading?"

You can not, again except for software process (also again, not that I'm aware of)

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