testsAndMisc/linux_configuration/i3blocks/gpu_monitor.sh
Krzysztof kuhy Rudnicki 08aac8d7d1 Flatten i3-configuration and misc/testsAndMisc-bash
i3 config was filed under periodic_background, which it never was. It is
now linux_configuration/i3/ (config + installer) and
linux_configuration/i3blocks/ (the status scripts), both at depth 2.

misc/testsAndMisc-bash/ was a directory named after the repo it already
lived in, so its contents moved up to misc/. Its stray .gitignore came
along, keeping the media rules working from the new location; its
.vscode/tasks.json did not, because it invoked Bash/transcribe.sh, a path
this repo dropped long ago.

Most of this commit is the references the previous flatten missed. Its
regex skipped anything with a variable prefix, which left 16 files --
including check_and_enable_services.sh and install_core_system.sh, the
orchestrators -- still naming $CONFIG_DIR/scripts/periodic_background/...
It had also rewritten three i3 paths into scripts/i3blocks/, a directory
that has never existed; the i3blocks suites caught that by failing.

13 more symlinks broke on the i3 move. Repointed, and cpu_monitor/volume/
disk were run again to confirm the bar still reports.

Depth 139 -> 104. Roughly 47 of the remainder sit in digital_wellbeing
and hosts, still deferred. The rest encode real structure -- a C project,
Python package directories, artgate's routes/styles, systemd unit dirs --
so flattening them further would destroy information rather than
taxonomy.

Verified: 1798 tests at 100%, both i3blocks suites pass, the shell
coverage gate is clean, and the relocated media rules still ignore what
they should while test_fw.srt stays tracked.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PJrqKERAo5QUeEHWS5Asgp
2026-08-23 19:02:18 +02:00

94 lines
2.4 KiB
Bash
Executable File

#!/bin/bash
# i3blocks GPU monitor, persist mode.
#
# Keeps a single long-lived `nvidia-smi --loop=5` (or reads amdgpu sysfs
# in a blocking-read loop) instead of forking nvidia-smi/lspci/awk/tr/bc
# every interval. No sleep, no polling loop in bash — nvidia-smi's own
# periodic emitter drives updates and we block on `read`.
#
# Configure with `interval=persist` and `markup=pango` in the i3blocks
# config. In persist mode each newline is a separate status update, so
# we emit exactly ONE line (with inline pango markup for color).
set -u
SCRIPT_DIR=${BASH_SOURCE[0]%/*}
[[ $SCRIPT_DIR == "${BASH_SOURCE[0]}" ]] && SCRIPT_DIR='.'
# shellcheck source=persist_common.sh
source "$SCRIPT_DIR/persist_common.sh"
# Nerd Font glyph: display / desktop icon (U+F108).
ICON='🎮'
emit() {
local temp=$1 load=$2 color
if [[ $load == 'N/A' ]]; then
color='#FFFFFF'
elif ((load < 50)); then
color='#50FA7B'
elif ((load < 75)); then
color='#F1FA8C'
else
color='#FF5555'
fi
printf '<span color="%s">%s %s°C, %s%%</span>\n' \
"$color" "$ICON" "$temp" "$load"
}
emit_if_changed() {
local temp=$1 load=$2
if ! i3blocks_update_if_changed_key "gpu_metric" "$temp|$load"; then
return 0
fi
emit "$temp" "$load"
}
# Prefer NVIDIA if present (persist via --loop).
if command -v nvidia-smi >/dev/null 2>&1; then
# One child process for the lifetime of i3blocks; emits CSV every 5s.
nvidia-smi \
--query-gpu=temperature.gpu,utilization.gpu \
--format=csv,noheader,nounits \
--loop=5 2>/dev/null |
while IFS=',' read -r temp load; do
# Strip leading/trailing whitespace using parameter expansion.
temp=${temp## }
temp=${temp%% }
load=${load## }
load=${load%% }
[[ -z $temp || -z $load ]] && continue
emit_if_changed "$temp" "$load"
done
exit 0
fi
# AMD fallback: read sysfs directly; emit once (i3blocks restarts on exit).
amdgpu=''
for d in /sys/class/hwmon/hwmon*/; do
[[ -r ${d}name ]] || continue
read -r n <"${d}name"
[[ $n == amdgpu ]] && {
amdgpu=$d
break
}
done
if [[ -n $amdgpu ]]; then
temp='N/A'
if [[ -r ${amdgpu}temp1_input ]]; then
read -r milli <"${amdgpu}temp1_input"
temp=$((milli / 1000))
fi
load='N/A'
# drm card matching the amdgpu hwmon exposes gpu_busy_percent.
for card in /sys/class/drm/card*/device/gpu_busy_percent; do
[[ -r $card ]] && {
read -r load <"$card"
break
}
done
emit_if_changed "$temp" "$load"
exit 0
fi
printf '<span color="#FF5555">%s No supported GPU</span>\n' "$ICON"