Re: 2.6.32-rc3: low mem - only 378MB on x86_32 with 64GB. Why?

From: Daniel J Blueman
Date: Mon Oct 05 2009 - 16:18:07 EST


On Oct 5, 5:10 pm, Jeff Chua <jeff.chua.li...@xxxxxxxxx> wrote:
> I've 3 systems with 4GB, 16GB and 64GB all running 32bit with these set:
[snip]
> Question is ... is there anyway to increase "low mem" without resorting to
> migrating to 64bit? (Look... it only has 378MB total low mem vs 850MB on
> the 4GB system). I've oracle installed on the 64GB system and it keeps
> getting OOMs!

Whilst linux may be able to address all 64GB of memory (running 32 or
64-bit), every 32-bit process will be limited to ~3GB virtual address
space, which may be the limiting factor for your out-of-memory issue
with Oracle. The only solution is to run 64-bit Oracle, alas.

Daniel
--
Daniel J Blueman
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