programmes divers de tests

bruno — 2026-07-21T10:33:39Z

apt-get install collectd-core rasdaemon edac-utils
– collectd - démon de surveillance et de collecte de statistiques
– mcelog (souvent obsolète selon systèmes récents) : erreurs correctibles/uncorrectibles.
– rasdaemon / outils RAS : collecte d'erreurs matérielles (fonctionne surtout sur systèmes qui exposent bien la télémétrie).
- edac-utils (si supporté) : remonte certains événements liés à la mémoire (plus dépendant du matériel/chipset).

tests mémoire/ ( memory / ram )

bruno — 2026-07-21T10:25:40Z

MemTest86 au démarrage

apt-get install memtest86+
Choisir memtest86 dans le grub, faire 2 passages ( 2 "passes" )

stress-ng

apt-get install stress-ng
stress-ng --vm 2 --vm-bytes 50% --timeout 10m --metrics-brief

stress-ng --vm 2 --vm-bytes 90% --timeout 10m --metrics-brief

tests cpu

bruno — 2026-07-21T10:12:33Z

Gestion de la performance

apt-get install linux-cpupower

lscpu | egrep -i 'MHz'

multiplication des MHz du/des CPU(s) : 22% Vitesse maximale du processeur en MHz : 3600,0000 Vitesse minimale du processeur en MHz : 800,0000

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor 2>/dev/null | head sort -u

powersave

cpupower frequency-info

analyse du CPU 6 : driver: intel_pstate CPUs which run at the same hardware frequency: 6 CPUs which need to have their frequency coordinated by software: 6 maximum transition latency: Cannot determine or is not supported. limitation matÃ©rielle : 800 MHz - 3.60 GHz rÃ©gulateurs disponibles : performance powersave tactique actuelle : la frÃ©quence doit Ãªtre comprise entre 800 MHz et 3.60 GHz. Le rÃ©gulateur "powersave" est libre de choisir la vitesse dans cette plage de frÃ©quences. current CPU frequency: Unable to call hardware current CPU frequency: 800 MHz (asserted by call to kernel) boost state support: Supported: no Active: no

cpupower idle-info

CPUidle driver: intel_idle CPUidle governor: menu analyse du CPU 7 : Number of idle states: 7 Available idle states: POLL C1 C1E C3 C6 C7s C8 POLL: Flags/Description: CPUIDLE CORE POLL IDLE Latency: 0 Residency: 0 Usage: 2388 Duration: 22736 C1: Flags/Description: MWAIT 0x00 Latency: 2 Residency: 2 Usage: 28037 Duration: 5401413 C1E: Flags/Description: MWAIT 0x01 Latency: 10 Residency: 20 Usage: 100192 Duration: 17409102 C3: Flags/Description: MWAIT 0x10 Latency: 70 Residency: 100 Usage: 34473 Duration: 6603725 C6: Flags/Description: MWAIT 0x20 Latency: 85 Residency: 200 Usage: 131383 Duration: 68119449 C7s: Flags/Description: MWAIT 0x33 Latency: 124 Residency: 800 Usage: 0 Duration: 0 C8: Flags/Description: MWAIT 0x40 Latency: 200 Residency: 800 Usage: 732009 Duration: 5874726622

cpupower powercap-info

Driver: intel-rapl Powercap domain hierarchy: Zone: package-0 (enabled) Power can be monitored in micro Watts Zone: core (disabled) Power can be monitored in micro Watts Zone: dram (disabled) Power can be monitored in micro Watts

cpupower monitor

intel-rapl/intel-rapl:0 0 intel-rapl/intel-rapl:0/intel-rapl:0:0 0 intel-rapl/intel-rapl:0/intel-rapl:0:1 0 | Nehalem || Mperf || RAPL || Idle_Stats | CPU| C3 | C6 | PC3 | PC6 || C0 | Cx | Freq || pack | core | dram || POLL | C1 | C1E | C3 | C6 | C7s | C8 | | 0| 0,20| 3,18| 0,00| 0,00|| 5,07| 94,93| 800||2568231|1209897|1366513|| 0,00| 0,00| 1,26| 0,30| 3,96| 0,00| 89,71| | 4| 0,20| 3,17| 0,00| 0,00|| 4,77| 95,23| 799||2568231|1209897|1366513|| 0,00| 0,00| 0,01| 0,05| 0,30| 0,00| 94,99| | 1| 0,03| 1,30| 0,00| 0,00|| 3,54| 96,46| 800||2568231|1209897|1366513|| 0,00| 0,00| 0,42| 0,04| 0,90| 0,00| 95,32| | 5| 0,03| 1,30| 0,00| 0,00|| 2,57| 97,43| 800||2568231|1209897|1366513|| 0,00| 0,01| 0,09| 0,03| 0,56| 0,00| 96,81| | 2| 0,08| 2,47| 0,00| 0,00|| 3,77| 96,23| 800||2568231|1209897|1366513|| 0,00| 0,00| 0,08| 0,08| 1,36| 0,00| 94,81| | 6| 0,08| 2,45| 0,00| 0,00|| 2,69| 97,31| 799||2568231|1209897|1366513|| 0,00| 0,00| 0,02| 0,02| 1,66| 0,00| 95,70| | 3| 0,00| 4,27| 0,00| 0,00|| 4,07| 95,93| 799||2568231|1209897|1366513|| 0,00| 0,00| 0,03| 0,06| 0,34| 0,00| 95,67| | 7| 0,00| 4,27| 0,00| 0,00|| 3,19| 96,81| 799||2568231|1209897|1366513|| 0,00| 0,40| 0,91| 0,00| 4,84| 0,00| 90,82|