Example analysis of size differences of rom content between PR/master/compiled versions (size.txt diff analysis)

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> Size comparison.
>
> Master's 4af780864fcca6364afc8ec038787541193326f4 vs this PR's 9b69f1b66a29ea90045eabe1d679994810beb17a
>
> ```
> wget https://output.circle-artifacts.com/output/job/03a0d0db-3e56-48e3-93d5-a23fa112e7a0/artifacts/0/build/x86/x230-hotp-maximized/sizes.txt -O master.txt
> wget https://output.circle-artifacts.com/output/job/97f89967-bb86-4a38-8d43-1f196e5be39d/artifacts/0/build/x86/x230-hotp-maximized/sizes.txt -O 1384.txt
> diff -u master.txt 1384.txt
> [...]
> --- master.txt 2024-02-16 13:57:39.000000000 -0500
> +++ 1384.txt 2024-02-21 14:18:12.000000000 -0500
> @@ -1,6 +1,6 @@
> -2024-02-16 13:46:15-05:00 95f9636a1adb26fc061228443ec6910ffe39c02b clean
> - 2488800:/root/project/build/x86/x230-hotp-maximized/bzImage
> - 685056:/root/project/build/x86/x230-hotp-maximized/modules.cpio
> +2024-02-21 14:04:48-05:00 9b69f1b66a29ea90045eabe1d679994810beb17a clean
> + 2489216:/root/project/build/x86/x230-hotp-maximized/bzImage
> + 813056:/root/project/build/x86/x230-hotp-maximized/modules.cpio
> -----
> 304040:./lib/modules/e1000e.ko
> 63272:./lib/modules/ehci-hcd.ko
> @@ -8,6 +8,11 @@
> 165024:./lib/modules/xhci-hcd.ko
> 11544:./lib/modules/xhci-pci.ko
> 128632:./lib/modules/usb-storage.ko
> + 12776:./lib/modules/mii.ko
> + 48808:./lib/modules/usbnet.ko
> + 19024:./lib/modules/cdc_ether.ko
> + 38016:./lib/modules/cdc_ncm.ko
> + 9048:./lib/modules/cdc_eem.ko
> -----
> 12572160:/root/project/build/x86/x230-hotp-maximized/tools.cpio
> -----
> @@ -71,7 +76,7 @@
> 35432:./bin/cbmem
> 741:./etc/config
> -----
> - 389120:/root/project/build/x86/x230-hotp-maximized/heads.cpio
> + 391680:/root/project/build/x86/x230-hotp-maximized/heads.cpio
> -----
> 1585:./.ash_history
> 73:./.gnupg/gpg-agent.conf
> @@ -104,7 +109,7 @@
> 2132:./bin/lock_chip
> 2836:./bin/media-scan
> 6013:./bin/mount-usb
> - 1609:./bin/network-init-recovery
> + 4204:./bin/network-init-recovery
> 745:./bin/nitropad-shutdown.sh
> 53851:./bin/oem-factory-reset
> 2316:./bin/oem-system-info-xx30
> @@ -152,5 +157,5 @@
> 924:./sbin/config-dhcp.sh
> 1271:./sbin/insmod
> -----
> - 4666368:build/x86/x230-hotp-maximized/initrd.cpio.xz
> - 8388608:/root/project/build/x86/x230-hotp-maximized/heads-x230-hotp-maximized-v0.2.0-2024-g95f9636-bottom.rom
> + 4691968:build/x86/x230-hotp-maximized/initrd.cpio.xz
> + 8388608:/root/project/build/x86/x230-hotp-maximized/heads-x230-hotp-maximized-v0.2.0-2026-g9b69f1b-bottom.rom
> ```
>
> Analysis:
> ```
> - 4666368:build/x86/x230-hotp-maximized/initrd.cpio.xz
> + 4691968:build/x86/x230-hotp-maximized/initrd.cpio.xz
> - 2488800:/root/project/build/x86/x230-hotp-maximized/bzImage
> + 2489216:/root/project/build/x86/x230-hotp-maximized/bzImage
>
> ```
> Additional ROM consumed compressed space: **(4691968-4666368)+(2489216-2488800)= 26016 bytes (~25Kb)**
>
>

_Originally posted by @tlaurion in https://github.com/linuxboot/heads/issues/1384#issuecomment-1826828059_

Start with the size.txt comparison commands and the referenced issue 1384 discussion; the payload does not identify a target documentation file. Determine where this analysis belongs, then document the comparison and its reported compressed-size difference, with the commands and result preserved as the completion check.

Written by the indexing model from the issue text.