I've been spending some time trying to determine some tuning issues w.r.t. moving to FreeBSD 5.*, and I've run into some frustrations. Perhaps the biggest one is that there is a severe lack of information on how to tune large systems in tuning(7) and/or the Handbook, parts of which seem to be direct from tuning(7). I've read numerous mailing list posts which say things like "See the tuning(7) man page and innumerable mailing lists posts" but the reality is that most of the mailing list posts do not serve as reasonable documentation. Let's take a small example of something like KVA_PAGES. Under 4.11, I read the "innumerable mailing lists posts" which suggested that the default of 256 could be bumped up to 384 or 512. Being conservative, I went to 384. The machine wouldn't boot. After much searching, I located *in* *the* *source* that if you're using PAE, KVA_PAGES needs to be multiplied by two. 768 got me what I needed. So, that brings me here: Is there someone around who is actually familiar with large system tuning and who might be willing to update the tuning info with a comprehensive set of items that are likely to need tweaking on larger servers? I'm not talking about "let's write a book." I'm talking more like "edit /sys/i386/conf/NOTES, fix KVA_PAGES to mention the PAE caveat, maybe elaborate just a tad more, and then stick a terse reference such as 'Changing the size of the kernel's virtual address space can be done via KVA_PAGES. See /sys/i386/conf/NOTES' into tuning(7)". Repeat for as many tunables as possible. Maybe add a few sentences about any common caveats or gotchas. I would just like to see the tunables all mentioned in tuning(7). A short paragraph about each would be heaven. I don't mind paying a qualified someone to do this if they can do a good job of it at a reasonable rate. Contact me off-list if interested. Thanks. ... JG -- Joe Greco - sol.net Network Services - Milwaukee, WI - http://www.sol.net "We call it the 'one bite at the apple' rule. Give me one chance [and] then I won't contact you again." - Direct Marketing Ass'n position on e-mail spam(CNN) With 24 million small businesses in the US alone, that's way too many apples.