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CSM performance predictions for L7

Unanswered Question
Jan 25th, 2006
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Hi,

Is there any way to predict the performance of a CSM balancing multiple VIPs/servers with different SLB requirements? For instance, a mix of L4, L7 and DSR?


I've found various papers showing rough estimates of performance for L7 etc., but nothing particularly useful.


Also, I'd be interested in how the performance of the CSM can be monitored for spare capacity. There appears to be resource usage commands in later versions, but I'm not sure what this actually provides and how it can be used to predict spare capacity on the CSM.


Thanks in advance,

Tony

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Gilles Dufour Wed, 02/01/2006 - 05:59
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  • Cisco Employee,

there is no way to "predict" the performance.

If you really want to know before deploying, you will need to put your csm config under stress in a lab.


Information to monitor are

'sho mod csm X tech util'

Check IXP CPU utilisation and available memory.


Also, get a 'sho mod csm X stats' and make sure the number of "Connections Current" is lower than the max 1 million.


Gilles.

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