Mailing List Archive: BD 6808 MSM 64i

BD 6808 MSM 64i - High CPU tBGTask

Apr 19, 2014, 2:29 PM

Post #1 of 3 (2694 views)

Hello,

Does anyone remember or can shed some light on the older 6808s with MSM 64i
w/256MB?
BGP is running but only iBGP. There is no full routes period just internal
networks for a grand total of 28. There is also 5 BGP peers, again all iBGP
and only 28 networks/routes.

Out side of basic BGP there are some route-maps for TE and that's about it.
One weird thing was when ever I disabled BGP and just used static routing
the tBGTask was still high.

Issue is the switch keeps throwing packets and when you run "top" you see:

Total number of tasks: 96
Task Name Task Id Task PC Status % CPU Max % util
==========================================================================
tBGTask 8a56d3b0 80ed6f58 READY 97 98
tExcTask 824d0fc0 80ee82cc PEND 0 0
tLogTask 824c43b0 80ee82cc PEND 0 0
tSlowTimer 82521080 80ee82cc PEND 0 0
tFastTimer 82553340 80ee82cc PEND 0 0
tTimeout 82557600 80ee82cc PEND 0 0
tEMSOutput 824d9080 80ee82cc PEND 0 0
tEMSFilter 824de080 80ee82cc PEND+T 0 0
tlogpoll 824e1790 80ed7124 DELAY 0 0
tledPollTa 824e9020 80ee82cc PEND 0 0
tFdbAgeTas 84a589e0 80ee82cc PEND 0 0
tFdbMacLoc 84a5cca0 80ee82cc PEND 0 0
tipFdbAgeT 84a60f60 80ee82cc PEND 0 0
tipsubFdbA 84a65220 80ee82cc PEND 0 0
tFdbSyncTa 84a6a300 80ed6960 SUSPEND 0 4
tFdbScanTa 83619fb0 80ee82cc PEND 0 0
tTrxdiagTa 84a79230 80ee82cc PEND 0 0
tAsyncSave 84d9e4e0 80ee82cc PEND 0 0
tpifstate 86d796d0 80ee82cc PEND 0 0

Any help is appreciated!

Thanks!

Re: BD 6808 MSM 64i - High CPU tBGTask [ In reply to ]

swmike at swm

Apr 19, 2014, 11:26 PM

Post #2 of 3 (2600 views)

Permalink

On Sat, 19 Apr 2014, root net wrote:

> Hello,
>
> Does anyone remember or can shed some light on the older 6808s with MSM 64i
> w/256MB?
> BGP is running but only iBGP. There is no full routes period just internal
> networks for a grand total of 28. There is also 5 BGP peers, again all iBGP
> and only 28 networks/routes.
>
> Out side of basic BGP there are some route-maps for TE and that's about it.
> One weird thing was when ever I disabled BGP and just used static routing
> the tBGTask was still high.
>
> Issue is the switch keeps throwing packets and when you run "top" you see:
>
> Total number of tasks: 96
> Task Name Task Id Task PC Status % CPU Max % util
> ==========================================================================
> tBGTask 8a56d3b0 80ed6f58 READY 97 98

The BG in BGTask means "background". So the device is 97-98% idle when it
comes to CPU utilization. Whatever is making it drop packets doesn't have
anything to do with CPU usage according to the information you've
provided.

--
Mikael Abrahamsson email: swmike@swm.pp.se
_______________________________________________
extreme-nsp mailing list
extreme-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/extreme-nsp

Re: BD 6808 MSM 64i - High CPU tBGTask [ In reply to ]

rootnet08 at gmail

Apr 20, 2014, 1:31 AM

Post #3 of 3 (2594 views)

Permalink

Thank you so much for the reply. You are absolutely correct. Don't know why
I kept thinking it was tbgpTas. So, the tBGTask should be above 90% and is
correct. Once realized that found the actual problem. Thanks!

On Sun, Apr 20, 2014 at 1:26 AM, Mikael Abrahamsson <swmike@swm.pp.se>wrote:

> On Sat, 19 Apr 2014, root net wrote:
>
> Hello,
>>
>> Does anyone remember or can shed some light on the older 6808s with MSM
>> 64i
>> w/256MB?
>> BGP is running but only iBGP. There is no full routes period just internal
>> networks for a grand total of 28. There is also 5 BGP peers, again all
>> iBGP
>> and only 28 networks/routes.
>>
>> Out side of basic BGP there are some route-maps for TE and that's about
>> it.
>> One weird thing was when ever I disabled BGP and just used static routing
>> the tBGTask was still high.
>>
>> Issue is the switch keeps throwing packets and when you run "top" you see:
>>
>> Total number of tasks: 96
>> Task Name Task Id Task PC Status % CPU Max % util
>> ============================================================
>> ==============
>> tBGTask 8a56d3b0 80ed6f58 READY 97 98
>>
>
> The BG in BGTask means "background". So the device is 97-98% idle when it
> comes to CPU utilization. Whatever is making it drop packets doesn't have
> anything to do with CPU usage according to the information you've provided.
>
> --
> Mikael Abrahamsson email: swmike@swm.pp.se
>