Expose number of cores on ARM/Linux
1 file changed
tree: 79eca26401968e87210d69a24d0de196d73dc668
- include/
- jni/
- src/
- test/
- tools/
- .gitignore
- configure.py
- confu.yaml
- LICENSE
- README.md
README.md
CPU INFOrmation library
cpuinfo is a library to detect essential for performance optimization information about host CPU.
Exposed information:
- [x] Processor (SoC) name
- [x] Integrated GPU name (Android only)
- [x] Microarchitecture
- [x] Usable instruction sets
- [ ] CPU frequency
- [x] Cache
- [x] Size
- [x] Associativity
- [x] Line size
- [x] Number of partitions
- [x] Flags (unified, inclusive, complex hash function)
- [x] Topology (logical processors that share this cache level)
- [ ] TLB
- [ ] Number of entries
- [ ] Associativity
- [ ] Covered page types (instruction, data)
- [ ] Covered page sizes
- [x] Topology information
- [x] Logical processors
- [x] Cores
- [x] Packages (sockets)
Supported environments:
- [x] Android
- [x] x86 ABI
- [x] x86_64 ABI
- [x] armeabi ABI
- [x] armeabiv7-a ABI
- [x] arm64-v8a ABI
- [ ] mips ABI
- [ ] mips64 ABI
- [x] Linux
- [x] x86
- [x] x86-64
- [x] 32-bit ARM (ARMv5T and later)
- [x] ARM64
- [ ] PowerPC
- [ ] iOS
- [x] OS X
- [ ] Windows
- [ ] Native Client
- [ ] x86
- [x] x86-64
- [ ] ARMv7-A
- [ ] Portable Native Client
- [ ] Emscripten
Planned features:
- Processor (SoC) name detection
- [x] Using CPUID leaves 0x80000002–0x80000004 on x86/x86-64
- [x] Using
/proc/cpuinfo
on ARM - [ ] Using kernel log (
dmesg
) on ARM - [x] Using
ro.chipname
, ro.board.platform
, ro.product.board
properties (Android)
- Vendor and microarchitecture detection
- [x] Intel-designed x86/x86-64 cores (up to Kaby Lake, Airmont, and Knights Mill)
- [x] AMD-designed x86/x86-64 cores (up to Puma/Jaguar and Zen)
- [ ] VIA-designed x86/x86-64 cores
- [ ] Other x86 cores (DM&P, RDC, Transmeta, Cyrix, Rise)
- [x] ARM-designed ARM cores (up to Cortex-A17, Cortex-73)
- [x] Qualcomm-designed ARM cores (up to Kryo and Kryo-280)
- [x] nVidia-designed ARM cores (Denver)
- [x] Samsung-designed ARM cores (Mongoose)
- [x] Intel-designed ARM cores (XScale up to 3rd-gen)
- [ ] Apple-designed ARM cores (up to Hurricane)
- [x] Cavium-designed ARM cores (ThunderX)
- [ ] AppliedMicro-designed ARM cores
- Instruction set detection
- [x] Using CPUID (x86/x86-64)
- [x] Using dynamic code generation validator (Native Client/x86-64)
- [x] Using
/proc/cpuinfo
on 32-bit ARM EABI (Linux) - [x] Using microarchitecture heuristics on (32-bit ARM)
- [x] Using
FPSID
and WCID
registers (32-bit ARM) - [ ] Using
getauxval
or /proc/self/auxv
(Linux) - [ ] Using instruction probing on ARM (Linux)
- [ ] Using CPUID registers on ARM64 (Linux)
- Cache detection
- [x] Using CPUID leaf 0x00000002 (x86/x86-64)
- [x] Using CPUID leaf 0x00000004 (non-AMD x86/x86-64)
- [ ] Using CPUID leaves 0x80000005-0x80000006 (AMD x86/x86-64)
- [x] Using CPUID leaf 0x8000001D (AMD x86/x86-64)
- [x] Using
/proc/cpuinfo
(Linux/pre-ARMv7) - [x] Using microarchitecture heuristics (ARM)
- [x] Using chipset name (ARM)
- [x] Using
sysctlbyname
(Mach) - [x] Using sysfs
typology
directories (ARM/Linux) - [ ] Using sysfs
cache
directories (Linux) - [ ] Using
clGetDeviceInfo
with CL_DEVICE_GLOBAL_MEM_CACHE_SIZE
/CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE
parameters (Android)
- TLB detection
- [x] Using CPUID leaf 0x00000002 (x86/x86-64)
- [ ] Using CPUID leaves 0x80000005-0x80000006 and 0x80000019 (AMD x86/x86-64)
- [x] Using microarchitecture heuristics (ARM)
- Topology detection
- [x] Using CPUID leaf 0x00000001 on x86/x86-64 (legacy APIC ID)
- [x] Using CPUID leaf 0x0000000B on x86/x86-64 (Intel APIC ID)
- [ ] Using CPUID leaf 0x8000001E on x86/x86-64 (AMD APIC ID)
- [x] Using
host_info
(Mach) - [x] Using sysfs (Linux)
- [x] Using chipset name (ARM/Linux)