iRule RAM CACHE odd behaviour

I will see if I can get command line access and try this out. in terms of the GUI the profiles that are assigned have the same RAM CACHE details applied.

you are right, it hasnt been assigned! RAM Cache Cache Size (in Bytes) 0 Total Cached Items 0 Total Evicted Items 0 Inter-Stripe Size (in Bytes) 0 Inter-Stripe Cached Items 0 Inter-Stripe Evicted Items 0 RAM Cache Hits/Misses Count Bytes Hits 11 5.4K Misses (Cacheable) 48 11.1K Misses (Total) 49 56.9G Inter-Stripe Hits 3 1.8K Inter-Stripe Misses 1.8M - Remote Hits 3 1.8K Remote Misses 1.8M -

This is one that is working: RAM Cache Cache Size (in Bytes) 17.9M Total Cached Items 1.9K Total Evicted Items 12.5M Inter-Stripe Size (in Bytes) 3.0M Inter-Stripe Cached Items 393 Inter-Stripe Evicted Items 14.3M RAM Cache Hits/Misses Count Bytes Hits 142.5M 968.4G Misses (Cacheable) 13.8M 387.7G Misses (Total) 15.3M 1.8T Inter-Stripe Hits 92.0M 540.7G Inter-Stripe Misses 85.2M - Remote Hits 14.9M 186.0G Remote Misses 67.1M -

GLOBAL HTTP STATISTICS | requests (total, max in conn, GET, POST) = (6.476G, 1.789M, 6.000G, 171.3M) | requests (v0.9, v1.0, v1.1) = (9375, 96.36M, 6.380G) | responses (v0.9, v1.0, v1.1) = (1983, 736752, 6.322G) | responses (2xx, 3xx, 4xx, 5xx) = (5.515G, 693.2M, 108.2M, 5.657M) | response size ( <1k, 1-4k, 4-16k, 16-32k, 32-64k, 64-128k, 128-512k, 512k-2M, >2M) | (1.937G, 1.354G, 1.632G, 592.3M, 366.1M, 229.5M, 168.7M, 24.13M, 14.48M) | Set-Cookie header insertions = 2 | RAM cache (entries, size, evict) = (17195, 363.9M, 12.54M) | RAM cache hit count (hits, misses, misses all) = (143.7M, 13.86M, 15.40M) | RAM cache byte count (hits, misses, misses all) = (978.0G, 388.6G, 1.941T) | Inter-stripe cache (entries, size, evict) = (17390, 162.2M, 14.37M) | Inter-stripe cache hit count (hits, misses, hit bytes) = (92.94M, 88.34M, 547.3G) | Remote cache hit count (hits, misses, hit bytes) = (14.96M, 70.06M, 186.7G)

I've posted our RAM availability below as well. I'm really confused as i expect to be able to utilise a lot more RAM for the cache as there is about 4GB free and we can use 50% of it for RAM CACHE. if there are 4 tmm's running then each should have 500MB. we are not close to the limits so why won't it cache? I am now more confused than i was before getting SSH access to the machine :)

here is the Free RAM stats from the machine:- [bijan@LMIC-BIGIP01:Active] ~ free total used free shared buffers cached Mem: 8187088 8120224 66864 0 77500 707412 -/+ buffers/cache: 7335312 851776 Swap: 1048568 850336 198232