I have nw6.5 with SP6 and now I have problem with too much free
memory. Acording to my setting shoud NSS cache use 85% of free memory,
but use only 50%.

After server restart is all ok, but after first hour I obtain on
console message "NSS releases 376829 cache pages upon request", and NSS
allocate back only about 200000 pages and 200MB of memory leave
fragmented and about 800MB is free. I do not know who ask for cache
release and why NSS do not corretly use all available memory for good
caching performace. We have 6GB of RAM, two Xeon P4 and 1.5TB FC disk array.

May anybody help me explain and solve this issue?