Hi folks,
We've got a RHEL 5.2 32 bit server with 64GB of RAM. We had to use 32 bit Redhat due to the application. Were using 2.6.18-92.1.10.el5PAE kernel and the OS can see all 64GB, we can also stress the server and it will use all 64GB. The problem is oom-killer is going ballistic, killing processes all over the place. I've logged a call with Dell about this and they say we cannot use > 16GB of RAM on a 32 bit kernel. RHEL 5 doesn't have a Hugemem kernel hence the PAE kernel. I got the following info from here http://en.wikipedia.org/wiki/Physical_Address_Extension "The x86 processor hardware is augmented with additional address lines used to select the additional memory, so physical address size is increased from 32 bits to 36 bits. This increases maximum physical memory size from 4 GB to 64 GB." So can anyone confirm that we 'cannot' use 64GB RAM on a 32 bit system with the PAE kernel, or offer any other advice please ? Kind Regards Nick Lunt Managed Services and O/S Analyst Patech Solutions Limited Tel: 01543 444 707 Fax: 01543 444 709 Tame House, Fradley Park, Lichfield, Staffordshire, WS13 8RZ www.patech-solutions.com <http://www.patech-solutions.com/home.htm>
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