4f94ebcb2c
- grub.cfg + isolinux/live.cfg.in: add pcie_aspm=off, intel_idle.max_cstate=1 and processor.max_cstate=1 to all non-failsafe boot entries - bee-hpc-tuning: new script that sets all CPU cores to performance governor via sysfs and logs THP state at boot - bee-hpc-tuning.service: runs before bee-nvidia and bee-audit - 9000-bee-setup.hook.chroot: enable service and mark script executable Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
42 lines
1.7 KiB
Bash
42 lines
1.7 KiB
Bash
#!/bin/sh
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# bee-hpc-tuning — apply HPC tuning for deterministic benchmarking
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# Called by bee-hpc-tuning.service at boot.
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log() { echo "[bee-hpc-tuning] $*"; }
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# ── CPU governor ────────────────────────────────────────────────────────────
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# Set all CPU cores to performance governor via sysfs.
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# cpupower is not available; write directly to scaling_governor.
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governor_ok=0
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governor_fail=0
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for gov_path in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
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[ -f "$gov_path" ] || continue
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if echo performance > "$gov_path" 2>/dev/null; then
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governor_ok=$((governor_ok + 1))
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else
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governor_fail=$((governor_fail + 1))
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fi
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done
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if [ "$governor_ok" -gt 0 ] && [ "$governor_fail" -eq 0 ]; then
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log "CPU governor set to performance on ${governor_ok} core(s)"
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elif [ "$governor_ok" -gt 0 ]; then
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log "WARN: CPU governor: ${governor_ok} OK, ${governor_fail} failed"
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elif [ "$governor_fail" -gt 0 ]; then
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log "WARN: failed to set CPU governor on ${governor_fail} core(s)"
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else
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log "WARN: no cpufreq scaling_governor paths found (C-state governor or HW-controlled)"
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fi
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# ── Transparent Huge Pages ───────────────────────────────────────────────────
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# Kernel cmdline sets transparent_hugepage=always at boot, but confirm and log.
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thp_path=/sys/kernel/mm/transparent_hugepage/enabled
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if [ -f "$thp_path" ]; then
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current=$(cat "$thp_path" 2>/dev/null)
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log "transparent_hugepage: ${current}"
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else
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log "WARN: transparent_hugepage sysfs path not found"
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fi
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log "done"
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