Posting for non-java development?

Greetings,
I'm not having much luck with the forum and I was thinking it may be my selection of forum area to post in. I'm currently developing in C on an E25K running Solaris 10. I'm trying to write high-performance code to take advantage of my environment and I need to know where I can post questions about topics such as threading, memory use, the vm system, disk subsystem, etc..
I'm not looking for answers to questions like "how do I make a thread?", but more along the lines of "when does the vm system start to discard pages of a mmap'd file that was advised of sequential access?"
Thanks for the help, any pointing in the right direction would be greatly appreciated.
Matthew

Well, I do try to write good posts, but I suppose that is subjective. Also, sometimes the problem is complex and will take an iterative conversation to come to a resolution or useful information.
I do a lot of RTFM'ing and can usually find solutions to specific problems (2 + 2 == 4, etc..) ;-) However, recently I find myself needing to understand some things that would require a bit of low-level knowledge of the kernel or disk layer, etc.. Yes, the Solaris code is open and I could read it, but time is a factor, as well as the ability to actually understand such code as the VM paging system, for example. I think I'm a good programmer, but not that good, yet...
I see a lot of unanswered posts in the forums so maybe the community is simply too small for the topic? Or does everyone pay for their support, thus making the forums less of a resource? I was surprised (in a good way) that Sun sells developer support for only $500 a year; IMHO that makes it available to many software developers. However, in my situation I'm not willing to pay out of pocket when the company I work for could easily have such a contract with Sun (but they don't). Thus, I'm trying my only other option, these forums.
Thanks for the feedback. I'll try to write better posts.
Matthew

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