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Speedup UTM Shared Directories MacOS

Speedup UTM Shared Directories MacOS

 Steve       2 minutes
UTM on macOS uses Virtio-9p for directory sharing, which is a network-based filesystem emulation. This can introduce latency, making file operations (e.g., copying, listing directories) feel slow compared to native macOS storage. Performance varies based on VM configuration, host load, and shared folder size.

Tune Virtio-9p Mount Options in the Guest The default mount can be conservative; tweaking parameters reduces latency for read/write ops.

Mount manually 
sudo mount -t 9p -o trans=virtio,version=9p2000.L,cache=loose,msize=262144 share /mnt/share
Setup in /etc/fstab 
share  /mnt/share  9p  trans=virtio,version=9p2000.L,cache=loose,msize=262144,rw,noauto,x-systemd.automount  0  0

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  Published on 11 Oct 2016
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