nexoniarz/SchOS
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SchOS/.claude/memory
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Filename Latest commit message Latest commit date
Nexoniarz 7b2d4037a4 Rebuild when RAMROOT is toggled, and add an opt-in KVM target 
`make ramroot` wiped the objects on the way in, and nothing wiped on the
way out. So a plain `make` afterwards kept every RAMDISK_ROOT object and
linked the 24 MB ramdisk back into a kernel that no longer used it: 25 MB
where a clean build is 836 KB. It still booted -- from the ramdisk -- and
the only outward symptom was stage2 having thirty times as much to load
through PIO, one sector at a time. That is the "booting got slower"
report this came from.

A stamp file records which setting the objects were built with, and the
tree is dropped when it changes in either direction.

qemu-kvm is opt-in and the default stays TCG, because the suite's timings
were established there. Measured with the guest timing itself,
`ls /bin | wc -l` goes 2.9s -> 1.1s. Boot does not improve and gets
slightly worse: every PIO port access in stage2 is a VM exit under KVM.

Retracts a claim from earlier today. The "2.2x speedup" attributed to the
region-based allocator was a measurement artifact -- the probe sent a
command, slept a fixed 50s on the host, then read /proc/uptime, so it
timed the sleep rather than the command, through a guest clock that drifts
under load. Bracketing the command inside one guest command line shows no
measurable difference. The e820 change is still correct; it is simply not
a performance change.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-09 22:46:00 +02:00
..
MEMORY.md memory: UEFI reaches userspace, and the ISO grows a hierarchy 2026-08-09 22:04:12 +02:00
nexoniarz-sharing-preference.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schfs-btree-phase1.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schfs-phase2-mount.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schfs-phase3-writes.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schfs-v2-and-ramdisk.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schos-boot-split.md memory: schinit and the BIOS/UEFI split 2026-08-09 16:36:54 +02:00
schos-bootcheck-trust.md Rebuild when RAMROOT is toggled, and add an opt-in KVM target 2026-08-09 22:46:00 +02:00
schos-cross-platform-build.md Rewrite run.ps1; it was five kinds of stale 2026-08-09 14:49:47 +02:00
schos-fedora-move-bugs.md Fix two bugs the Fedora move exposed 2026-08-09 19:29:21 +02:00
schos-linux-machine.md Fix two bugs the Fedora move exposed 2026-08-09 19:29:21 +02:00
schos-memory-sync.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schos-performance-and-init.md memory: performance, init signal safety, and trusting the harness 2026-08-09 15:55:11 +02:00
schos-rename-and-git.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schos-schinit.md memory: schinit and the BIOS/UEFI split 2026-08-09 16:36:54 +02:00
schos-uefi-loader.md Rebuild when RAMROOT is toggled, and add an opt-in KVM target 2026-08-09 22:46:00 +02:00
schunix-boot-splash-logo.md schinit: a launchd-shaped process 1 2026-08-09 16:36:13 +02:00
schunix-build-environment.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-build-speed.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-console-tty.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-crash-screen.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-devfs-procfs.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-device-model.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-dirsiz-14.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-doom-acceptance-test.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-driver-infrastructure.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-e1000-and-driver-layout.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-framebuffer-device.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-ioremap-and-bars.md memory: UEFI reaches userspace, and the ISO grows a hierarchy 2026-08-09 22:04:12 +02:00
schunix-iso-boot.md memory: the installer is scoped, and the live CD is off the list 2026-08-09 22:20:20 +02:00
schunix-layout-migration.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-licensing.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-linux-abi-decision.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-linux-open-flags.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-network-stack-choice.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-pci-drivers.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-qr-encoder.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-ramdisk-root-sizing.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-rewrite-priorities.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-roadmap-and-projects.md memory: the installer is scoped, and the live CD is off the list 2026-08-09 22:20:20 +02:00
schunix-schapi-direction.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-shm-and-mmap.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-smp-and-memory-bugs.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-sockets-and-evdev.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-syscall-single-table.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-text-rendering.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-ttf-rasteriser.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-tty-fg-pgrp-coupling.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-usb-ids.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-usb-xhci.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-verify-by-driving-shell.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-virtio-gpu.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00
schunix-wall-clock.md Carry project memory in the repo, with tools/memory-sync.sh 2026-08-09 14:27:22 +02:00