Mailing List Archive: AS5300 NAS high CPU utilisation

AS5300 NAS high CPU utilisation

Mar 28, 2006, 8:05 PM

Post #1 of 3 (3406 views)

Dear All,

I got very high CPU utilisation on AS5300 NAS while only 10 users are online. The process that uses 94% of CPU is TTY Background as below:

PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
1 0 1 0 0.00% 0.00% 0.00% 0 Chunk Manager
2 741616 5218495 142 0.00% 0.00% 0.00% 0 Load Meter
3 11629672 1851679 6280 0.00% 0.08% 0.01% 0 PPP auth
4 65427436 4125682 15858 0.00% 0.36% 0.30% 0 Check heaps
5 0 9 0 0.00% 0.00% 0.00% 0 Chunk Manager
6 103368 169450 610 0.00% 0.00% 0.00% 0 Pool Manager
7 0 2 0 0.00% 0.00% 0.00% 0 Timers
8 87464 5030762 17 0.00% 0.00% 0.00% 0 ALARM_TRIGGER_SC
9 237396 249020 953 0.00% 0.00% 0.00% 0 Serial Backgroun
10 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
11 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
12 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
13 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
14 0 2 0 0.00% 0.00% 0.00% 0 CAS Process
15 1248236 2614131 477 0.00% 0.00% 0.00% 0 ARP Input
16 365476 6342439 57 0.00% 0.00% 0.00% 0 HC Counter Timer
17 65124 513573 126 0.00% 0.00% 0.00% 0 DDR Timers
18 0 2 0 0.00% 0.00% 0.00% 0 Dialer event
19 4 2 2000 0.00% 0.00% 0.00% 0 Entity MIB API
20 0 1 0 0.00% 0.00% 0.00% 0 SERIAL A'detect
21 0 2 0 0.00% 0.00% 0.00% 0 Critical Bkgnd
22 20308172 10414340 1950 0.00% 0.08% 0.07% 0 Net Background
23 153652 1724628 89 0.00% 0.00% 0.00% 0 Logger
24 1377289684 39898572 34520 97.96% 94.87% 94.02% 0 TTY Background

Anyone has any idea, please suggest.

Regards,
Souphonh

Re: AS5300 NAS high CPU utilisation [ In reply to ]

Aaron at cisco

Mar 29, 2006, 8:12 AM

Post #2 of 3 (3282 views)

Permalink

Souphonh,

I don't see below what IOS version you're running, but here are some
likely candidate bugs involving high CPU in TTY Background:

CSCdm01508: TTY Background hold 30% CPU Process
Version: 012.000
Integrated-releases: 012.000(004.001) 11.3(09.02)AA 12.0(04.02)S
12.0(04.00.03)PI05 12.0(04.00.04)PI05 12.0(04.03)T 12.0(04.02)PI05
12.0(04)XJ 12.0(04.06)W05(11.00.09)

CSCdy01705: High cpu at process TTY Background
Version: 12.2(10A)
Integrated-releases: 12.2(18)SXE 12.2(15)BC02e 12.2(18)S06 12.2(20)S05
12.1(21.04)EC 12.3(07)XI 12.1(21.03)E04 12.2(21.07)S 12.2(21.05)S
012.002(021.006) 012.002(021) 12.3(02.03)B 12.2(11)T09 12.3(01.06)T
012.003(001.006)

CSCed16920: Constant high CPU in TTY background
Version: 12.2S 12.3(03a)
Integrated-releases: 12.2(18)SXE 12.0(28)S02 12.0(30.01)S 12.2(18)EW02
12.3(02)T09 12.3(04)T09 12.2(20)SE03 12.1(22)E03 012.002(026)
012.002(026.005) 012.003(005.014) 12.0(29.04)S01 12.1(22.04)E
12.2(18)S06 12.2(18)SXD 12.2(20)S05 12.2(22)S02 12.2(23c) 12.2(24.08)S02
12.2(25.04)S 12.3(06.01)T 12.3(07)XI

Cheers,

Aaron

------------------------------------------------------------------------

> Dear All,
>
> I got very high CPU utilisation on AS5300 NAS while only 10 users are online. The process that uses 94% of CPU is TTY Background as below:
>
> PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
> 1 0 1 0 0.00% 0.00% 0.00% 0 Chunk Manager
> 2 741616 5218495 142 0.00% 0.00% 0.00% 0 Load Meter
> 3 11629672 1851679 6280 0.00% 0.08% 0.01% 0 PPP auth
> 4 65427436 4125682 15858 0.00% 0.36% 0.30% 0 Check heaps
> 5 0 9 0 0.00% 0.00% 0.00% 0 Chunk Manager
> 6 103368 169450 610 0.00% 0.00% 0.00% 0 Pool Manager
> 7 0 2 0 0.00% 0.00% 0.00% 0 Timers
> 8 87464 5030762 17 0.00% 0.00% 0.00% 0 ALARM_TRIGGER_SC
> 9 237396 249020 953 0.00% 0.00% 0.00% 0 Serial Backgroun
> 10 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
> 11 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
> 12 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
> 13 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
> 14 0 2 0 0.00% 0.00% 0.00% 0 CAS Process
> 15 1248236 2614131 477 0.00% 0.00% 0.00% 0 ARP Input
> 16 365476 6342439 57 0.00% 0.00% 0.00% 0 HC Counter Timer
> 17 65124 513573 126 0.00% 0.00% 0.00% 0 DDR Timers
> 18 0 2 0 0.00% 0.00% 0.00% 0 Dialer event
> 19 4 2 2000 0.00% 0.00% 0.00% 0 Entity MIB API
> 20 0 1 0 0.00% 0.00% 0.00% 0 SERIAL A'detect
> 21 0 2 0 0.00% 0.00% 0.00% 0 Critical Bkgnd
> 22 20308172 10414340 1950 0.00% 0.08% 0.07% 0 Net Background
> 23 153652 1724628 89 0.00% 0.00% 0.00% 0 Logger
> 24 1377289684 39898572 34520 97.96% 94.87% 94.02% 0 TTY Background
>
> Anyone has any idea, please suggest.
>
> Regards,
> Souphonh
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> cisco-nas mailing list
> cisco-nas@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nas
>

_______________________________________________
cisco-nas mailing list
cisco-nas@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nas

Re: AS5300 NAS high CPU utilisation [ In reply to ]

mounir.mohamed at gmail

Mar 29, 2006, 8:51 AM

Post #3 of 3 (3254 views)

Permalink

If this process takes high CPU utilization, check whether "logging
synchronous" is configured under "line con 0".

Please check the below URL
http://www.cisco.com/warp/public/63/highcpu_processes.html#tty

Best Regards,
Mounir Mohamed

On 3/29/06, Souphonh Phounsavath <souphonh@laopdr.com> wrote:
>
> Dear All,
>
> I got very high CPU utilisation on AS5300 NAS while only 10 users are
> online. The process that uses 94% of CPU is TTY Background as below:
>
> PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
> 1 0 1 0 0.00% 0.00% 0.00% 0 Chunk
> Manager
> 2 741616 5218495 142 0.00% 0.00% 0.00% 0 Load Meter
> 3 11629672 1851679 6280 0.00% 0.08% 0.01% 0 PPP auth
> 4 65427436 4125682 15858 0.00% 0.36% 0.30% 0 Check heaps
> 5 0 9 0 0.00% 0.00% 0.00% 0 Chunk
> Manager
> 6 103368 169450 610 0.00% 0.00% 0.00% 0 Pool
> Manager
> 7 0 2 0 0.00% 0.00% 0.00% 0 Timers
> 8 87464 5030762 17 0.00% 0.00% 0.00% 0
> ALARM_TRIGGER_SC
> 9 237396 249020 953 0.00% 0.00% 0.00% 0 Serial
> Backgroun
> 10 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
> 11 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
> 12 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
> 13 0 1 0 0.00% 0.00% 0.00% 0 RM PROCESS
> 14 0 2 0 0.00% 0.00% 0.00% 0 CAS Process
> 15 1248236 2614131 477 0.00% 0.00% 0.00% 0 ARP Input
> 16 365476 6342439 57 0.00% 0.00% 0.00% 0 HC Counter
> Timer
> 17 65124 513573 126 0.00% 0.00% 0.00% 0 DDR Timers
> 18 0 2 0 0.00% 0.00% 0.00% 0 Dialer
> event
> 19 4 2 2000 0.00% 0.00% 0.00% 0 Entity MIB
> API
> 20 0 1 0 0.00% 0.00% 0.00% 0 SERIAL
> A'detect
> 21 0 2 0 0.00% 0.00% 0.00% 0 Critical
> Bkgnd
> 22 20308172 10414340 1950 0.00% 0.08% 0.07% 0 Net
> Background
> 23 153652 1724628 89 0.00% 0.00% 0.00% 0 Logger
> * 24 1377289684 39898572 34520 97.96% 94.87% 94.02% 0 TTY
> Background
> *
> Anyone has any idea, please suggest.
>
> Regards,
> Souphonh
>
> _______________________________________________
> cisco-nas mailing list
> cisco-nas@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nas
>
>
>

--
Best Reagrds,
Mounir Mohamed