Performance increase with fresh install?

[qtpie]

I just did a fresh install of Qubes 4.0.1 to move to a larger ssd, and
then restored all qubes vms, except for sys-usb, sys-net and
sys-firewall. Before I was also running 4.0.1, that was upgraded from
3.1 via 3.2

I note that the startup time of both dom0 and vms is significantly
lower, and the system as a whole seems significantly more responsive.

I did not do any custom modifications on the old system.

I hesitated before writing this email because all of this is very
subjective, but the difference seems big enough to justify it.

Is there a reason that could explain this performance increase?

[awokd]

qtpie:

I've noticed this before too. It might be
https://github.com/QubesOS/qubes-issues/issues/4927#issuecomment-478128953.