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Linux Kernel

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by fixerupper

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Linux Drops to 10% or less of working speed with more than 2GB of RAM.
Red Hat Variants (Cent OS)
8 GB RAM
2.8 Pentium D
SATA devices
Intel 965 MB

If I install with 2GB or less of ram the system works great.
If I install 4GB or more the system runs like a 386. Incredibly slow, but still functional.
If I install with 2GB and then upgrade the ram after the initial installation, everything is fine, however, this is not a practical solution.

All 8 GB of RAM are seen.

OpenSUSE, Solaris and WinX64 runs fine??? Don't Know Why.

This problem also occurs on an ASUS P4 Motherboard with 4GB or RAM.

Suggestions?

2 replies

by sajchurchey

Check with your distribution, there is a kernel configuration option some call "bigmem" that will optimize your kernel to work w/ 4GB or more of memory.

Check with your distribution to see if the stock kernel (the kernel that came with the distro) supports this. If not, you may need to download a version of the kernel that will or compile your own.

That's the only thing I can think of that may be causing this problem. Maybe someone else has some other ideas.

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