mirror of
https://github.com/kuhyx/testsAndMisc.git
synced 2026-07-04 17:03:05 +02:00
Krzysztof kuhy Rudnicki
c8c727e9d5
Resource-usage report showed ~29 cores of average load coming from i3blocks helper scripts forking awk/tr/grep/bc/sensors/nvidia-smi every tick. Rewrite all five hot-path scripts to eliminate forks: - volume.sh: persist mode, blocks on 'pactl subscribe' event stream. No polling, no sleep, no fork per tick. - gpu_monitor.sh: persist mode, single long-lived 'nvidia-smi --loop=5' feeds a bash 'while read' loop. Falls back to /sys for amdgpu. - battery_status.sh: reads /sys/class/power_supply/BAT*/ directly. Zero forks; replaces 'acpi | awk' pipeline. - cpu_monitor.sh: reads /proc/loadavg and k10temp/coretemp /sys/class/hwmon. Zero forks; replaces 'sensors | awk | tr' + bc arithmetic. - motherboard_temp.sh: reads nct*/it*/f71* Super-I/O hwmon node directly. Zero forks. Configure volume + gpu_monitor with interval=persist so i3blocks keeps one long-lived producer each instead of forking per tick. Also add: - kill_stale_recorders.sh -- kill stray ffmpeg x11grab / dotnet-trace / dotnet-monitor processes left running after sessions. - monitors.slice -- resource-capped user slice (CPUQuota=50%, MemoryMax=512M, MemorySwapMax=0 for zram safety, TasksMax=256) to bound future monitoring regressions. - efficient-polling-scripts SKILL -- rules for writing status-bar and polling scripts without forks; fork-pipeline to bash-builtin translation table; verification checklist. Verified live: strace -c on cpu_monitor.sh shows 1 execve / 0 clones; persist producers (pactl subscribe, nvidia-smi --loop) show 0 CPU ticks over a 3s idle sample. Per-invocation timing 1.6-1.9 ms (was 30-80 ms).
61 lines
1.3 KiB
Bash
Executable File
61 lines
1.3 KiB
Bash
Executable File
#!/bin/bash
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# i3blocks CPU monitor, zero-fork per invocation.
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#
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# Reads /proc/loadavg and /sys/class/hwmon/*/temp*_input directly instead
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# of forking `sensors | awk | tr` and `echo | bc`. Pure bash builtins.
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set -u
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# Locate AMD k10temp or Intel coretemp hwmon node.
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hwmon=''
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for d in /sys/class/hwmon/hwmon*/; do
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[[ -r ${d}name ]] || continue
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read -r n < "${d}name"
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case $n in
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k10temp | coretemp)
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hwmon=$d
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break
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;;
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esac
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done
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temp='N/A'
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temp_int=-1
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if [[ -n $hwmon && -r ${hwmon}temp1_input ]]; then
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read -r milli < "${hwmon}temp1_input"
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temp_int=$((milli / 1000))
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temp=$temp_int
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fi
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load='N/A'
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load_x100=0
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if [[ -r /proc/loadavg ]]; then
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read -r one _ < /proc/loadavg
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load=$one
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# loadavg prints two decimals, e.g. "1.23" → 123, "0.05" → 5.
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load_digits=${one//./}
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load_digits=${load_digits##0}
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load_x100=$((10#${load_digits:-0}))
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fi
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color='#FFFFFF'
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if ((temp_int >= 0)); then
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if ((temp_int < 65)); then
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color='#50FA7B'
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elif ((temp_int < 85)); then
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color='#F1FA8C'
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else
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color='#FF5555'
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fi
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elif ((load_x100 > 0)); then
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if ((load_x100 < 100)); then
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color='#50FA7B'
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elif ((load_x100 < 200)); then
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color='#F1FA8C'
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else
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color='#FF5555'
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fi
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fi
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printf '<span color="%s"> %s°C, %s</span>\n' "$color" "$temp" "$load"
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