Build server setup

System

• CPU: 48 x Intel(R) Xeon(R) Gold 5412U (1 Socket) speed: 2100 MHz - 3900 MHz
• Mem: 256 GB
• Storage: 36 TiB (~4 TiB on SSD)

Location

• Germany (Frankfurt am Main)

Setup

• Ubuntu 22.04 VM running on Proxmox VE
• no public access (access is granted via a VPN connection + SSH pubkey-only)

Proxmox VE setup

• Full Disk Encryption via LUKS on all partitions
• Secure Boot enforced (LUKS unlock on boot is NOT handled using TPM! i.e. an unlock must happen manually for enhanced security)
• no public access (access is granted via a VPN connection + SSH pubkey-only)

Build time averages

some examples (last updated: 2024-11-18) for AXP.OS builds which are covering the following specs:

• clean builds (i.e. emptied out/)
• using fast SSD storage for Android sources and out/

Android version	Pure build time (^1)	Full build run (^2)
Android 9	~18-22 minutes	N/A
Android 10	~25-35 minutes	~42 minutes
Android 11	~20-25 minutes	~36 minutes
Android 12	N/A	N/A
Android 13	~35-45 minutes	~60-80 minutes
Android 14	no current results. previously(^3) : ~60-90 minutes	N/A

• (^1): Pure build time: calculated only build time (i.e. w/o preparation like git reset/sync etc and w/o post-tasks like release, git push etc)
• (^2): Full build run: calculated whole build run (i.e. with preparation like git reset/sync etc and with all post-tasks like release, git push etc)
• (^3): old server setup with less cores, RAM and slower storage