Messages in this thread |  | | Date | 6 Sep 2002 20:50:26 -0000 | From | jeff@AmeriCom ... | Subject | Re: Linux SMP kernel bug with > 512M ram |
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I don't think its chipset or memory, the machines that crash have different brand motherboards with different chipsets, I ran docmem for 24 hours on each stick of ram and found no errors. The ram worked fine in my WindowsXP machine, and it works fine when I use the non-smp kernel, and/or when I take the ram down to 2 sticks (512 meg). I'm posting here because I believe I have narrowed it down to a bug in the kernel.
> On Fri, 2002-09-06 at 17:55, jeff@AmeriCom.com wrote: > > I've been having problems with a few of our servers and I can't seem to find this > > problem mentioned anywhere else. All of the dual processor machines will not operate > > with greater than 512 megs of ram with the newer SMP kernels (2.4.7-10enterprise #1 > > 2.4.7 is hardly "new". Red Hat has issued errata kernels going up to > 2.4.9. > > > SMP). Two of the dual P3 1ghz machines crash after a few minutes, when the memory > > usage gets high enough, I presume. The errors they spit out vary, but its only when > > I go over 512megs of ram, and only on dual processor machines. I had a slightly > > Chipset or memory hardware problems seem the most likely cause if the > errors seem random or weird > > > different problem when I tried to set it up on a dual p2 266 machine, when I go over > > 512 megs there, the system takes an hour to boot up, and everything crawls from > > Thats BIOS. Thats a well known BIOS problem where the BIOS doesnt > configure the mtrr registers properly. You can work around that one by > tweaking the settings by hand or probably by getting a newer BIOS > > >
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