top process / procnto-600-smp-instr

[Ahmed Erfan Mehdi]

Hello Dear,

When i execute top process command at 12000 core router, i got this output:   

251 processes; 1139 threads; 1006 timers, 5742 channels, 9696 fds

CPU states: 94.9% idle, 2.2% user, 2.8% kernel

Memory: 2048M total, 569M avail, page size 4K

      JID TIDS Chans  FDs Tmrs   MEM   HH:MM:SS   CPU  NAME

        1   12  256  170    1      0 7220:44:20  2.87% procnto-600-smp-instr

    65787    1    1    6    0     1M    0:00:00  0.67% ptop

    65564    7   15    4    3   101M    0:33:30  0.67% devb-eide-prp2

      388    7   32   44   13     7M    3:42:22  0.19% statsd_manager

       64   16   33   17    1   748K   15:06:23  0.09% mbus-prp-b

       57   10   11   41    2     1M   10:39:43  0.09% fabricq_prp_driver

      322   18   96  106    7     8M    2:51:21  0.09% netio

       86    7   10  182    0   700K    0:00:04  0.09% redfs_svr

      409   42  101  107   12     5M    4:24:39  0.09% tcp

      372   20   20   51    6     2M    0:03:07  0.09% sctp

this the 1st process ( procnto-600-smp-instr ) is taking high cpu usage, would you please clarify this matter ..

Regards,

Ahmed

[Martin Ermel]

The process you are refering to (procnto-600-smp-instr) is the mikrokernel of the IOS XR image running on the device. Have a look here for more details:

http://www.cisco.com/en/US/products/ps5763/products_tech_note09186a0080772675.shtml

Also, there have been bugs in the past with this process having a high cpu usage (>20%) on CRS routers (CSCta71485)

[Ahmed Erfan Mehdi]

Dear Martin,

thank you for your reply ... yes you are right ... in the past, many bugs was there ... TAC advice us to upgrade from 3.6.0 to 4.0.3 but till now we have same thing ...

my questions are :

- how did you that we have a bug in the past ?

-regarding to thid issue ( 2.87% procnto-600-smp-instr ) , is it normal ?

would you please advice us something to do