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Emulab FAQ: Testbed Operations: How to boot an existing FreeBSD kernel with a different HZ.
Emulab FAQ: Testbed Operations: How to boot an existing FreeBSD kernel with a different HZ.
At the pxeboot prompt, there is a "setenv" command to set loader environment variables. Type:
setenv:kern.hz=2000 loader:disk1s1a:/kernel.jail