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https://github.com/Dichgrem/dotfiles.git
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70 lines
2.0 KiB
Bash
Executable File
70 lines
2.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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need() { command -v "$1" >/dev/null 2>&1; }
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OUTDIR="kernel-bench-$(uname -r)-$(date +%F-%H%M%S)"
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mkdir -p "$OUTDIR"
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log() { echo "== $1 ==" | tee -a "$OUTDIR/summary.txt"; }
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echo "Kernel benchmark started at $(date)" | tee "$OUTDIR/summary.txt"
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log "KERNEL INFO"
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uname -a | tee "$OUTDIR/kernel.txt"
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cat /proc/cmdline | tee "$OUTDIR/cmdline.txt"
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log "CPU GOVERNOR / FREQ"
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if need cpupower; then
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cpupower frequency-info | tee "$OUTDIR/cpufreq.txt"
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else
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echo "cpupower not found (add nixpkgs#linuxPackages.cpupower)" | tee "$OUTDIR/cpufreq.txt"
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fi
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log "KCONFIG (LTO / AMD_PSTATE)"
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if [ -e /proc/config.gz ]; then
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zgrep -E "LTO|THINLTO|AMD_PSTATE" /proc/config.gz |
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tee "$OUTDIR/kconfig.txt" || true
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else
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echo "No /proc/config.gz found" | tee "$OUTDIR/kconfig.txt"
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fi
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log "CYCLICTEST (LATENCY TAIL)"
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if need cyclictest; then
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cyclictest -p95 -m -Sp90 -i200 -l100000 | tee "$OUTDIR/cyclictest.txt"
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else
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echo "cyclictest not found (add nixpkgs#rt-tests)" | tee "$OUTDIR/cyclictest.txt"
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fi
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log "SCHEDULER LATENCY UNDER LOAD"
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if need stress-ng && need perf; then
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stress-ng --cpu "$(nproc)" --cpu-method matrix &
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STRESS_PID=$!
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sleep 2
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perf sched record -- sleep 10
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perf sched latency | tee "$OUTDIR/perf-sched.txt"
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kill "$STRESS_PID" || true
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else
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echo "missing stress-ng and/or perf (add nixpkgs#stress-ng nixpkgs#linuxPackages.perf)" |
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tee "$OUTDIR/perf-sched.txt"
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fi
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log "SYSCALL / BRANCH BEHAVIOR"
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if need perf; then
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perf stat -e cycles,instructions,branches,branch-misses \
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ls -R /usr >/dev/null 2>"$OUTDIR/perf-stat.txt"
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else
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echo "perf not found (add nixpkgs#linuxPackages.perf)" | tee "$OUTDIR/perf-stat.txt"
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fi
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log "POWER / FREQ SNAPSHOT (turbostat)"
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if need turbostat; then
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turbostat --Summary --interval 1 --num_iterations 5 | tee "$OUTDIR/turbostat.txt"
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else
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echo "turbostat not found (OK to skip). If you want it, try nixpkgs#linuxPackages.turbostat" |
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tee "$OUTDIR/turbostat.txt"
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fi
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log "DONE"
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echo "Results saved in $OUTDIR" | tee -a "$OUTDIR/summary.txt"
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