[j-nsp] j-series high cpu after upgrade

[Maciej Jan Broniarz]

On 11-03-09 15:11, Rafal Grzeskowiak wrote:

Hi,

> I experienced similar problems after upgrading 9.x to 10.x on J4350
> (with BGP and flowd as well). The JTAC was helpless with this case.
> Since I had 90+ percent of memory utilization, I decided to upgrade RAM
> from 1 to 2GB and it solved the issue (CPU load has decreased).
> New JUNOS (10.x) consumes much more resources than the previous versions.
>

We had a similar issue with J6350 after switching to 10.x.
There was a memory issue, resulting in random loss of ARP data and BGP 
routes. JTAC was unable to provide us with a solution other, than adding 
another 1gb of ram.

All best,
mjb


> BR,
> r.
>
>
>> Hi,
>>
>> I upgraded our J2320 from 9.5 to 10.2 this week - the box is now crawling
>> with CPU consistently 90%. As far as I can see we're still well within
>> the
>> spec of the box though - aggregate traffic is< 100Mb/s; no. of flow
>> sessions is between 10k-20k. It is not doing anything
>> overly-complicated -
>> firewalling between 5 zones, a handful of bgp sessions exchanging only a
>> small number of routes. "Top" shows that it is flowd that is consuming
>> the
>> CPU but that doesn't really tell me anything useful:
>>
>>> show chassis routing-engine
>> Routing Engine status:
>> Temperature 35 degrees C / 95 degrees F
>> CPU temperature 44 degrees C / 111 degrees F
>> Total memory 512 MB Max 451 MB used ( 88 percent)
>> Control plane memory 298 MB Max 271 MB used ( 91 percent)
>> Data plane memory 214 MB Max 180 MB used ( 84 percent)
>> CPU utilization:
>> User 9 percent
>> Real-time threads 91 percent
>> Kernel 0 percent
>> Idle 0 percent
>> Model RE-J2320-2000
>> Serial ID VH6168
>> Start time 2011-03-08 22:56:09 GMT
>> Uptime 14 hours, 40 minutes, 31 seconds
>> Last reboot reason 0x2:watchdog
>> Load averages: 1 minute 5 minute 15 minute
>> 1.69 1.60 1.48
>>
>>> show chassis forwarding
>> FWDD status:
>> State Online
>> Microkernel CPU utilization 11 percent
>> Real-time threads CPU utilization 87 percent
>> Heap utilization 84 percent
>> Buffer utilization 0 percent
>> Uptime: 3 hours, 25 minutes, 2 seconds
>>
>> Anyone any thoughts before I roll back?
>>
>> regards
>> Liam.
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>>
>>
>
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