[j-nsp] Juniper High CPU Process Kqread

[a. rahman isnaini rst / netsoft]

Thanks Kevin.
Here the last minute captured, no more high kqread CPU consumption.
I didn't do any of tuning, just fixing some routes &  moving one bgp 
session

   PID USERNAME PRI NICE  SIZE    RES STATE    TIME   WCPU    CPU COMMAND
  2540 root       2   0   223M   220M kqread 350:04  0.98%  0.98% rpd
36068 root      32   0 21736K   824K RUN      0:00  0.00%  0.00% top

rgs
a. r. isnaini rangkayo sutan

Kevin Oberman wrote:
>> Date: Fri, 15 Aug 2008 11:14:20 +0700
>> From: "a. rahman isnaini rst / netsoft" <risnaini at netsoft.net.id>
>> Sender: juniper-nsp-bounces at puck.nether.net
>>
>> Dear Juners,
>>
>>
>> Since limited documentation resources, anybody would like to suggest how 
>> can we tune the Engine to get kqread normal ?
>> And what might cause of this high cpu condition ?
>>
>> PID USERNAME PRI NICE  SIZE    RES STATE    TIME   WCPU    CPU COMMAND
>>   2540 root       2   0   223M   220M kqread 268:48 44.34% 44.34% rpd
> 
> While I can't supply any answer, the thing that is eating up the CPU is
> rpd, the main routing daemon. It is reading the kernel queue if it is in
> the kqread state.
> 
> To see the route processor using 44% of the CPU is rather high. Even on
> our core routers I generally  only see 3-5% CPU use by rpd. It runs much
> higher at time when there is routing instability.