The default macOS VM configuration (
basic.sh) assumes some sane defaults, however this may not reflect the actual topology or peformance capabilities of the underlaying machine.
Here's some tunable parameters to get the most of out QEMU:
The following line controls memory allocation. The default is 2GB of RAM.
Increase this as needed (limited to the real amount of memory in your machine).
-m 2G \
The default configuration enables 4 threads, divided into CPUs with 2 cores each.
-smp 4,cores=2 \
The following example describes all possible topology flags:
-smp cores=4,threads=4,sockets=1 \