[j-nsp] transfer between 2 ns2000's is slow

[Tim Eberhard]

Can you debug the traffic and send me the output?

'debug tag info' is sufficient.


On Wed, Feb 11, 2009 at 5:20 PM, Leslie <leslie at craigslist.org> wrote:

> It's always the flow cpu that spikes up
>
> Tim Eberhard wrote:
>
>> Leslie,
>>
>> please issue the "get perf cpu all detail" command to see if which CPU is
>> going up. I suspect you're hitting an ALG or this is going to CPU for some
>> odd reason.
>>
>> -Tim Eberhard
>>
>> On Tue, Feb 10, 2009 at 1:46 PM, Leslie <leslie at craigslist.org <mailto:
>> leslie at craigslist.org>> wrote:
>>
>>    I'm having a strange problem that I haven't been able to fix after
>>    much studying --
>>
>>    Basically my setup is host 1 - fw1 - dedicated 1gige link (~25ms
>>    lag) - router2 - fw2 - host 2
>>
>>    I can blast udp across this pipe without a problem, but tcp traffic
>>    seems to be limited to about 3 mbyte/s -- I can make multiple
>>    sessions that are all transferring at this speed, but no individual
>>    session will go over that "limit"
>>
>>    Another thing that makes me extremely suspicious is occasionally
>>    when I start a transfer I'll see a brief cpu spike -- like shown below
>>
>>     get perf cpu detail
>>    Average System Utilization: 21%
>>    Last 60 seconds:
>>    59: 37    58: 34    57: 38    56: 27    55: 39    54: 38
>>    53: 81**  52: 76**  51: 81**  50: 77**  49: 82**  48: 62*
>>    47: 36    46: 37    45: 35    44: 36    43: 36    42: 35
>>    41: 32    40: 37    39: 33    38: 37    37: 34    36: 39
>>    35: 33    34: 38    33: 33    32: 39    31: 33    30: 39
>>    29: 31    28: 40    27: 29    26: 42    25: 35    24: 41
>>    23: 35    22: 38    21: 31    20: 35    19: 32    18: 41
>>    17: 35    16: 38    15: 34    14: 39    13: 35    12: 40
>>    11: 33    10: 40     9: 32     8: 39     7: 45     6: 39
>>     5: 34     4: 40     3: 35     2: 42     1: 36     0: 39
>>
>>
>>    I've obviously spent hours and hours on the phone/email with tac
>>    without much help.  Does anyone have any ideas of what could be
>>    doing this?  Any troubleshooting tips?
>>
>>    Thank you
>>
>>    Leslie
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>>