64GB RAM Problem
Mark Clarkson
mark.clarkson at smorg.co.uk
Wed Dec 17 09:34:31 UTC 2008
Hi,
I'm having problems with a Dell R900 with 64 GB RAM.
I can't create a 40GB file without Out Of Memory errors,
usually followed by a system hang (due to killing init).
This only happens with 32bit RHEL, which is what I need,
64bit is okay. The file stops growing at 22GB when the
cache memory reaches 22.5GB. This problem doesnt happen
with 32GB RAM.
Has anyone been able to create a big file on 32bit RHEL
on different hardware with 64GB RAM?
I used:
dd if=/dev/zero of=bigfile.delme bs=1k count=$((24*1024*1024))
Cheers
Mark.
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