[c-nsp] High CPU usage on 6500/12.2(18)SXF5

[Robert Hass]

Hi

I have two Catalyst 6500/Sup32 running OSPF+EIGRP+Full BGP. First one
is running 12.2(18)SXF4 and second one is running SXF5. On SXF5 we
have much bigger CPU usage and when we're using CLI (via telnet) it's
feels much slower (delays) comparing to 6500/SXF4. Both 6500 have
512MB RAM.

MRTG of CPU usage shows much more CPU usage on SXF5:

SXF5      Max                 Average             Current
(%) CPU   80.0 CPU Usage (%)  37.0 CPU Usage (%)  41.0 CPU Usage (%)
(%) CPU   80.0 CPU Usage (%)  37.0 CPU Usage (%)  41.0 CPU Usage (%)

SXF4      Max                 Average             Current
(%) CPU   60.0 CPU Usage (%)  13.0 CPU Usage (%)  7.0 CPU Usage (%)
(%) CPU   60.0 CPU Usage (%)  13.0 CPU Usage (%)  7.0 CPU Usage (%)

'show proce cpu sorted' show this too, please see 'one minute' and
'five minutes' CPU usage:

SXF4
CPU utilization for five seconds: 52%/2%; one minute: 13%; five minutes: 13%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 299   768170988   4603681     166861 47.35%  7.35%  6.50%   0 BGP Scanner
 119   3029317402639663528          0  1.73%  2.12%  2.26%   0 IP Input
 298     9164324  25100568        365  0.07%  0.06%  0.07%   0 BGP I/O
 175      222792  15791676         14  0.07%  0.00%  0.00%   0 L3 Manager
   5   132654320   6709641      19770  0.00%  0.84%  0.99%   0 Check heaps
  37     5246672    215377      24360  0.00%  0.03%  0.00%   0 Per-minute Jobs
 158    28928532    228344     126688  0.00%  0.19%  0.19%   0 IP Background
 172     4478984  19376157        231  0.00%  0.03%  0.02%   0 CEF process
 262     6862848  47466955        144  0.00%  0.05%  0.05%   0 Port manager per
 290    17100452  70093424        243  0.00%  0.06%  0.09%   0 BGP Router

SXF5
CPU utilization for five seconds: 0%/0%; one minute: 19%; five minutes: 27%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 272      964328   6033826        159  0.15%  0.03%  0.00%   0 Port manager per
 121      463552   2680554        172  0.07%  0.01%  0.00%   0 IP Input
   5    17475452    868566      20120  0.00%  0.48%  0.54%   0 Check heaps
  37     1211256     50500      23985  0.00%  0.02%  0.00%   0 Per-minute Jobs
 142    80982224  18963845       4270  0.00%  1.09%  1.39%   0 CEF RP IPC Backg
 161     3320696     55422      59916  0.00%  0.04%  0.07%   0 IP Background
 162   361476828   1951479     185243  0.00%  5.76%  8.43%   0 IP RIB Update
 164   196200188  10419375      18830  0.00%  3.47%  5.61%   0 BGP Router
 176   114318408    702071     162835  0.00%  2.51%  3.55%   0 BGP Scanner
 177    63183664   3577551      17661  0.00%  1.71%  2.21%   0 CEF process
 179    11893656   4281986       2777  0.00%  0.18%  0.22%   0 L3 Manager

My questions:
1) Is it normal for SXF5 ?
2) What about upgrade to SXF6, release-notes not metion about higher
CPU usage ? Maybe we should look at 12.2 SRA release ?
3) 6500/SXF5 puts into syslog messages like: Oct  2 18:12:50.979:
%AAAA-3-NOREG: authentication method 12 has no registry! -Traceback= .
Is it normal ? (we're using local and tacacs as AAA).

Thanks,
Robert