vault backup: 2026-01-05 13:03:55

01_Projects/Infrastructure/Systems/Opensuse startup time.md

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+
+🎉 **Success!**  
+Your boot time improved from **39 seconds → 9 seconds** — that’s a **~77% speed increase**. 🚀
+
+Great work applying the fix correctly!
+
+---
+
+### ⏱ Boot Profile Now
+
+|Phase|Before|After|Improvement|
+|---|---|---|---|
+|Userspace|~36s|~5.5s|🔥 -30.5s|
+|Total|~39.4s|~9.0s|👍 -30.4s|
+
+The system is now performing like a modern openSUSE should.
+
+---
+
+### 📌 Next: Confirm SSH Starts Early
+
+Optional but recommended:
+
+```bash
+systemctl status sshd.service
+```
+
+It should start **right after network.target**, not waiting for full online connection.
+
+If SSH still waits too long for DNS, you can also apply:
+
+```bash
+sudo sed -i 's/#UseDNS yes/UseDNS no/' /etc/ssh/sshd_config
+sudo systemctl restart sshd
+```
+
+---
+
+### 🧽 Optional Cleanup
+
+To remove the leftover serial devices delay (3 seconds earlier):
+
+```bash
+sudo systemctl mask serial-getty@ttyS0.service
+sudo systemctl mask serial-getty@ttyS1.service
+sudo systemctl mask serial-getty@ttyS2.service
+sudo systemctl mask serial-getty@ttyS3.service
+```
+
+If you **don’t** use serial consoles, this is safe and saves another ~3s.
+
+---
+
+### 🚀 Want even faster boot?
+
+I can help optimize:
+
+- ZRAM for faster paging
+    
+- Disable unnecessary services (Snapper timers, Avahi if not needed)
+    
+- Enable fast boot in GRUB (skip detecting other OS)
+    
+- Parallelize or lazy-load more services
+    
+
+Just share:
+
+```bash
+systemctl --failed
+systemd-analyze blame | head -n 10
+```
+
+and I’ll provide a tailored further optimization plan.
+
+---
+
+If you'd like, I can also help optimize:
+
+🟢 Startup applications  
+🟢 Linux network stack speed  
+🟢 SSD mount tuning (discard, noatime)  
+🟢 bootloader timeout & fast initrd
+
+Would you like a **one-click optimization script** for openSUSE?