Sun Fire v20z Server Not seeing more than 2 Gig memory
Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
Kernel HighMem issue. There's the normal 1Gb limit that a default kernel comes with, then a 4Gb limit that is any given distro's usual HighMem kernel, and then 64Gb limit that runs slowly on machines with less then 4. Check to see if RH has a 64Gb kernel, I'm certain they do. Offhand I don't have any of the RH licenses, but hey man, you're paying for that support, smack 'em around a bit until they give you the right sized kernel.
BIOS limitations? Or rather a BIOS clip on RAM? I'm not familiar with the Sun x86 boxes, but that's all I can figure. If the kernel supports it and the box's bios does a full count on boot then there's something wonky going on between bios and kernel.... but its definately one of the two.
Damn, this is one of those times I really wish I could poke the thing you know?
Distribution: RHEL5/6, Solaris 10/11, NetBSD, OpenBSD, FreeBSD, MacOS
I thought I'd post a quick message on here, as if you're using Red Hat AS3, I assume that you've splashed the cash and have bought it along with support from Red Hat.
On a Linux SysAdmin course my work sent me on in August, run by a Red Hat certified systems engineer (at least I think that's the right qualification?), he warned us that Red Hat, even though they supply it, don't actually support the HugeMem (64GB) kernel, even though they supply it! Which seems arse to me but still. So might be worth being a bit cagey if you give them a call. A don't know if this is still the situation, and where I work we haven't any support contract with Red Hat, so can't really advise further.
Just thought I'd let you know what we were told though.