Bug#1099675: systemd: Poor performance of systemctl commands on arm64

[Kirill Buksha]

Package: systemd
Version: 252.33-1~deb12u1
Severity: normal
Tags: patch
X-Debbugs-Cc: kirbuk200 at gmail.com

Dear Maintainer,

there is a known problem with poor performance of particular systemctl commands on ARM CPUs that has already been fixed in v255 of systemd:
- link to the issue: https://github.com/systemd/systemd/issues/26950
- the exact commit that fixes the problem: https://github.com/systemd/systemd/commit/f96a32c7f06995bd17daa311f491682f524e48a6

In my case this patch significantly improves the performance of these commands:
- `systemctl daemon-reload`: ~13 seconds with 252.33-1~deb12u1 and ~6 seconds when mentioned fix is applied;
- `systemctl enable/disable <service>`:  ~50 seconds with 252.33-1~deb12u1 and ~20 seconds when mentioned fix is applied;

With systemd v254.22-1~bpo12+1 I got the same problem.

Could you please include the specified commit as a patch in the systemd Bookworm distribution?

Best regards,
Kirill Buksha.