Tuesday, July 15, 2008

The great NUMA debate, part V

There was some questions whether I turned NUMA off or not one one of my previous tests. I repeated the test with similar results.

If I looked at my /proc/cmdline, I got:
ro root=LABEL=/ console=ttyS1 pci=nommconf elevator=deadline selinux=0 numa=off

Then, I looked at my boot messages and saw:
NUMA turned off

Lastly, my numactl --hardware showed:
available: 1 nodes (0-0)
node 0 size: 34815 MB
node 0 free: 31507 MB

I still couldn't start a 16GB SGA. Interestingly enough, I couldn't start a 4G SGA either! I had to go back to booting without numa=off. The saga continues...

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