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

[Rafal Grzeskowiak]

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.

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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