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Those kernel parameters won't affect performance. They will simply affect how much shared memory, messages and semaphores are configured in the kernel. This may affect whether a particular TimesTen datastore can be loaded into memory or not but if it loads then they have no real effect on performance.
The difference in performance is due to this:
model name : Intel(R) Xeon(R) CPU E7540 @ *2.00GHz*
stepping : 6
cpu MHz : *1064.000*
cache size : 18432 KB
cpu cores : 6
model name : Intel(R) Xeon(R) CPU E5620 @ *2.40GHz*
stepping : 2
cpu MHz : *2400.000*
cache size : 12288 KB
cpu cores : 4
The second machine has a significantly faster CPU...
Edited by: ChrisJenkins on Nov 12, 2012 12:01 PM
Hi Karan,1 person found this helpful
The OS kernel parameters don't really have an impact on performance, they are more around OS memory resources management.
TimesTen is very 'lightweight' in terms of the CPU cycles used to access data. Therefore as a generalisation on a single thread we typically see the faster the CPU the faster TimesTen will go. As below Server B has a faster CPU, so would expect a single thread to be faster here than on Server A.
Thanks Chris/Tim ..