Platform-specific limits

Limit x86 ARMv7
System RAM 32 GBa 4 GBa
Physical addressing 36-bit 32-bit
CPUsb 32c 4
Virtual address spaced 3.5 GB 2 GB

a You need to enable extended addressing by specifying the startup's -x option.

b The hardware might further limit the number of CPUs.

c If you plan to use more than 8 CPUs on an x86 platform, you must use the 6.5 or later version of procnto-smp with startup-bios or startup-apic.

d These are the absolute maximum limits for the virtual address space; you can reduce them by setting the RLIMIT_AS resource with setrlimit().