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glances/glances/cpu_percent.py

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#
# This file is part of Glances.
#
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <nicolas@nicolargo.com>
#
# SPDX-License-Identifier: LGPL-3.0-only
#
"""CPU percent stats shared between CPU and Quicklook plugins."""
import platform
from typing import TypedDict
import psutil
from glances.logger import logger
from glances.timer import Timer
__all__ = ["cpu_percent"]
CPU_IMPLEMENTERS = {
0x41: 'ARM Limited',
0x42: 'Broadcom',
0x43: 'Cavium',
0x44: 'DEC',
0x46: 'Fujitsu',
0x48: 'HiSilicon',
0x49: 'Infineon Technologies',
0x4D: 'Motorola/Freescale',
0x4E: 'NVIDIA',
0x50: 'Applied Micro (APM)',
0x51: 'Qualcomm',
0x53: 'Samsung',
0x56: 'Marvell',
0x61: 'Apple',
0x66: 'Faraday',
0x69: 'Intel',
0x6D: 'Microsoft',
0x70: 'Phytium',
0xC0: 'Ampere Computing',
}
CPU_PARTS = {
# ARM Limited (0x41)
0x41: {
0xD03: 'Cortex-A53',
0xD04: 'Cortex-A35',
0xD05: 'Cortex-A55',
0xD06: 'Cortex-A65',
0xD07: 'Cortex-A57',
0xD08: 'Cortex-A72',
0xD09: 'Cortex-A73',
0xD0A: 'Cortex-A75',
0xD0B: 'Cortex-A76',
0xD0C: 'Neoverse N1',
0xD0D: 'Cortex-A77',
0xD0E: 'Cortex-A76AE',
0xD13: 'Cortex-R52',
0xD20: 'Cortex-M23',
0xD21: 'Cortex-M33',
0xD40: 'Neoverse V1',
0xD41: 'Cortex-A78',
0xD42: 'Cortex-A78AE',
0xD43: 'Cortex-A65AE',
0xD44: 'Cortex-X1',
0xD46: 'Cortex-A510',
0xD47: 'Cortex-A710',
0xD48: 'Cortex-X2',
0xD49: 'Neoverse N2',
0xD4A: 'Neoverse E1',
0xD4B: 'Cortex-A78C',
0xD4C: 'Cortex-X1C',
0xD4D: 'Cortex-A715',
0xD4E: 'Cortex-X3',
0xD4F: 'Neoverse V2',
0xD80: 'Cortex-A520',
0xD81: 'Cortex-A720',
0xD82: 'Cortex-X4',
0xD84: 'Neoverse V3',
0xD85: 'Cortex-X925',
0xD87: 'Cortex-A725',
},
# Apple (0x61)
0x61: {
0x000: 'Swift',
0x001: 'Cyclone',
0x002: 'Typhoon',
0x003: 'Twister',
0x004: 'Hurricane',
0x005: 'Monsoon/Mistral',
0x006: 'Vortex/Tempest',
0x007: 'Lightning/Thunder',
0x008: 'Firestorm/Icestorm (M1)',
0x009: 'Avalanche/Blizzard (M2)',
0x00E: 'Everest/Sawtooth (M3)',
0x010: 'Blizzard/Avalanche (A16)',
0x011: 'Coll (M4)',
},
# Qualcomm (0x51)
0x51: {
0x00F: 'Scorpion',
0x02D: 'Scorpion',
0x04D: 'Krait',
0x06F: 'Krait',
0x201: 'Kryo',
0x205: 'Kryo',
0x211: 'Kryo',
0x800: 'Kryo 260/280 Gold (Cortex-A73)',
0x801: 'Kryo 260/280 Silver (Cortex-A53)',
0x802: 'Kryo 385 Gold (Cortex-A75)',
0x803: 'Kryo 385 Silver (Cortex-A55)',
0x804: 'Kryo 485 Gold (Cortex-A76)',
0x805: 'Kryo 485 Silver (Cortex-A55)',
0xC00: 'Falkor',
0xC01: 'Saphira',
},
# Samsung (0x53)
0x53: {
0x001: 'Exynos M1/M2',
0x002: 'Exynos M3',
0x003: 'Exynos M4',
0x004: 'Exynos M5',
},
# NVIDIA (0x4e)
0x4E: {
0x000: 'Denver',
0x003: 'Denver 2',
0x004: 'Carmel',
},
# Marvell (0x56)
0x56: {
0x131: 'Feroceon 88FR131',
0x581: 'PJ4/PJ4b',
0x584: 'PJ4B-MP',
},
# Cavium (0x43)
0x43: {
0x0A0: 'ThunderX',
0x0A1: 'ThunderX 88XX',
0x0A2: 'ThunderX 81XX',
0x0A3: 'ThunderX 83XX',
0x0AF: 'ThunderX2 99xx',
0x0B0: 'OcteonTX2',
0x0B1: 'OcteonTX2 T98',
0x0B2: 'OcteonTX2 T96',
0x0B3: 'OcteonTX2 F95',
0x0B4: 'OcteonTX2 F95N',
0x0B5: 'OcteonTX2 F95MM',
},
# Broadcom (0x42)
0x42: {
0x00F: 'Brahma B15',
0x100: 'Brahma B53',
0x516: 'Vulcan',
},
# HiSilicon (0x48)
0x48: {
0xD01: 'Kunpeng-920',
0xD40: 'Cortex-A76 (Kirin)',
},
# Ampere (0xc0)
0xC0: {
0xAC3: 'Ampere-1',
0xAC4: 'Ampere-1a',
},
# Fujitsu (0x46)
0x46: {
0x001: 'A64FX',
},
# Intel (0x69) - ARM-based chips
0x69: {
0x200: 'i80200',
0x210: 'PXA250A',
0x212: 'PXA210A',
0x242: 'i80321-400',
0x243: 'i80321-600',
0x290: 'PXA250B/PXA26x',
0x292: 'PXA210B',
0x2C2: 'i80321-400-B0',
0x2C3: 'i80321-600-B0',
0x2D0: 'PXA250C/PXA255/PXA26x',
0x2D2: 'PXA210C',
0x411: 'PXA27x',
0x41C: 'IPX425-533',
0x41D: 'IPX425-400',
0x41F: 'IPX425-266',
0x682: 'PXA32x',
0x683: 'PXA930/PXA935',
0x688: 'PXA30x',
0x689: 'PXA31x',
},
}
class CpuInfo(TypedDict):
cpu_name: str
cpu_hz: float | None
cpu_hz_current: float | None
class PerCpuPercentInfo(TypedDict):
key: str
cpu_number: int
total: float
user: float
system: float
idle: float
nice: float | None
iowait: float | None
irq: float | None
softirq: float | None
steal: float | None
guest: float | None
guest_nice: float | None
dpc: float | None
interrupt: float | None
class CpuPercent:
"""Get and store the CPU percent."""
def __init__(self, cached_timer_cpu: int = 2):
# cached_timer_cpu is the minimum time interval between stats updates
# since last update is passed (will retrieve old cached info instead)
self.cached_timer_cpu = cached_timer_cpu
# psutil.cpu_freq() consumes lots of CPU
# So refresh CPU frequency stats every refresh * 2
self.cached_timer_cpu_info = cached_timer_cpu * 2
# Get CPU name
self.timer_cpu_info = Timer(0)
self.cpu_info: CpuInfo = {'cpu_name': self.__get_cpu_name(), 'cpu_hz_current': None, 'cpu_hz': None}
# Warning from PsUtil documentation
# The first time this function is called with interval = 0.0 or None
# it will return a meaningless 0.0 value which you are supposed to ignore.
self.timer_cpu = Timer(0)
self.cpu_percent = self._compute_cpu()
self.timer_percpu = Timer(0)
self.percpu_percent = self._compute_percpu()
def get_key(self):
"""Return the key of the per CPU list."""
return 'cpu_number'
def get_info(self) -> CpuInfo:
"""Get additional information about the CPU"""
# Never update more than 1 time per cached_timer_cpu_info
if self.timer_cpu_info.finished() and hasattr(psutil, 'cpu_freq'):
# Get the CPU freq current/max
try:
cpu_freq = psutil.cpu_freq()
except Exception as e:
logger.debug(f'Can not grab CPU information ({e})')
else:
if hasattr(cpu_freq, 'current'):
self.cpu_info['cpu_hz_current'] = cpu_freq.current
else:
self.cpu_info['cpu_hz_current'] = None
if hasattr(cpu_freq, 'max') and cpu_freq.max != 0.0:
self.cpu_info['cpu_hz'] = cpu_freq.max
else:
self.cpu_info['cpu_hz'] = None
# Reset timer for cache
self.timer_cpu_info.reset(duration=self.cached_timer_cpu_info)
return self.cpu_info
@staticmethod
def __get_cpu_name() -> str:
# Get the CPU name once from the /proc/cpuinfo file
# Read the first line with the "model name" ("Model" for Raspberry Pi)
ret = f'CPU {platform.processor()}'
try:
cpuinfo_lines = open('/proc/cpuinfo').readlines()
except (FileNotFoundError, PermissionError):
logger.debug("No permission to read '/proc/cpuinfo'")
return ret
cpu_implementer = None
for line in cpuinfo_lines:
# Look for the CPU name
if line.startswith('model name') or line.startswith('Model') or line.startswith('cpu model'):
return line.split(':')[1].strip()
# Look for the CPU name on ARM architecture (see #3127)
if line.startswith('CPU implementer'):
cpu_implementer = CPU_IMPLEMENTERS.get(int(line.split(':')[1].strip(), 16), ret)
ret = cpu_implementer
if line.startswith('CPU part') and cpu_implementer in CPU_PARTS:
cpu_part = CPU_PARTS[cpu_implementer].get(int(line.split(':')[1].strip(), 16), 'Unknown')
ret = f'{cpu_implementer} {cpu_part}'
return ret
def get_cpu(self) -> float:
"""Update and/or return the CPU using the psutil library."""
# Never update more than 1 time per cached_timer_cpu
if self.timer_cpu.finished():
# Reset timer for cache
self.timer_cpu.reset(duration=self.cached_timer_cpu)
# Update the stats
self.cpu_percent = self._compute_cpu()
return self.cpu_percent
@staticmethod
def _compute_cpu() -> float:
return psutil.cpu_percent(interval=0.0)
def get_percpu(self) -> list[PerCpuPercentInfo]:
"""Update and/or return the per CPU list using the psutil library."""
# Never update more than 1 time per cached_timer_cpu
if self.timer_percpu.finished():
# Reset timer for cache
self.timer_percpu.reset(duration=self.cached_timer_cpu)
# Update stats
self.percpu_percent = self._compute_percpu()
return self.percpu_percent
def _compute_percpu(self) -> list[PerCpuPercentInfo]:
psutil_percpu = enumerate(psutil.cpu_times_percent(interval=0.0, percpu=True))
return [
{
'key': self.get_key(),
'cpu_number': cpu_number,
'total': round(100 - cpu_times.idle, 1),
'user': cpu_times.user,
'system': cpu_times.system,
'idle': cpu_times.idle,
'nice': cpu_times.nice if hasattr(cpu_times, 'nice') else None,
'iowait': cpu_times.iowait if hasattr(cpu_times, 'iowait') else None,
'irq': cpu_times.irq if hasattr(cpu_times, 'irq') else None,
'softirq': cpu_times.softirq if hasattr(cpu_times, 'softirq') else None,
'steal': cpu_times.steal if hasattr(cpu_times, 'steal') else None,
'guest': cpu_times.guest if hasattr(cpu_times, 'guest') else None,
'guest_nice': cpu_times.steal if hasattr(cpu_times, 'guest_nice') else None,
'dpc': cpu_times.dpc if hasattr(cpu_times, 'dpc') else None,
'interrupt': cpu_times.interrupt if hasattr(cpu_times, 'interrupt') else None,
}
for cpu_number, cpu_times in psutil_percpu
]
# CpuPercent instance shared between plugins
cpu_percent = CpuPercent()
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