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Forum Discussion

Renato_166638's avatar
Renato_166638
Icon for Nimbostratus rankNimbostratus
Nov 27, 2015

Cache size, configured vs observed

Hi, I was observing the web-acceleration profile I've configured and I noted an huge difference between the cache size configured and the observed. Here go some examples: Configured parameter: "...
application delivery
BIG-IP
LTM
Renato's avatar
Renato
Icon for Altostratus rankAltostratus
Dec 01, 2015

Well, theCook, this is a great point! I really forgot to consider this hypothesis. A lot of information are really stored per TMM instance in order to avoid concurrency and locking between processes on memory access. In this case the costumer asked me to enable cache for one transaction that receives random parameters, it reaches a huge cardinality and the cache hit ratio is not that high.

 

I don't know if the increase of memory usage was really related to those TMM crashes we observed, but they happened just after enabling the web acceleration profiles and the device was under a high load. The profiles are still enabled and the device is working properly, but we are not facing that high load anymore.