According dmidecode this cpu have: L1 - 64KiB - not true in my opinion because (L1 Instruction cache: 32KB and L1 Data cache: 32KB) per core - L1 should be 128KiB L2 - 6Mib - true
dmidecode --type 4,7 # dmidecode 2.10 SMBIOS 2.4 present.
Handle 0x0004, DMI type 4, 35 bytes Processor Information Socket Designation: U10 Type: Central Processor Family: Pentium M Manufacturer: Intel(R) ID: 76 06 01 00 FF FB EB BF Signature: Type 0, Family 6, Model 23, Stepping 6 Flags: FPU (Floating-point unit on-chip) VME (Virtual mode extension) DE (Debugging extension) PSE (Page size extension) TSC (Time stamp counter) MSR (Model specific registers) PAE (Physical address extension) MCE (Machine check exception) CX8 (CMPXCHG8 instruction supported) APIC (On-chip APIC hardware supported) SEP (Fast system call) MTRR (Memory type range registers) PGE (Page global enable) MCA (Machine check architecture) CMOV (Conditional move instruction supported) PAT (Page attribute table) PSE-36 (36-bit page size extension) CLFSH (CLFLUSH instruction supported) DS (Debug store) ACPI (ACPI supported) MMX (MMX technology supported) FXSR (Fast floating-point save and restore) SSE (Streaming SIMD extensions) SSE2 (Streaming SIMD extensions 2) SS (Self-snoop) HTT (Hyper-threading technology) TM (Thermal monitor supported) PBE (Pending break enabled) Version: Intel(R) Core(TM)2 Duo CPU T9300 @ 2.50GHz Voltage: 1.1 V External Clock: 200 MHz Max Speed: 2500 MHz Current Speed: 2500 MHz Status: Populated, Enabled Upgrade: None L1 Cache Handle: 0x0005 L2 Cache Handle: 0x0006 L3 Cache Handle: Not Provided Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified
Handle 0x0005, DMI type 7, 19 bytes Cache Information Socket Designation: Internal L1 Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Back Location: Internal Installed Size: 64 kB Maximum Size: 64 kB Supported SRAM Types: Burst Installed SRAM Type: Burst Speed: Unknown Error Correction Type: Unknown System Type: Unified Associativity: 4-way Set-associative
Handle 0x0006, DMI type 7, 19 bytes Cache Information Socket Designation: Internal L2 Cache Configuration: Enabled, Not Socketed, Level 2 Operational Mode: Write Back Location: External Installed Size: 6144 kB Maximum Size: 6144 kB Supported SRAM Types: Burst Installed SRAM Type: Burst Speed: Unknown Error Correction Type: None System Type: Unified Associativity: 4-way Set-associative
On Mon, Jun 27, 2011 at 1:00 PM, William L. Maltby <CentOS4Bill@triad.rr.com
wrote:
On Mon, 2011-06-27 at 12:25 +0200, clibup clibup wrote:
Hi
Could anybody explain me how to check how many L1/L2 cache my cpu have. I'm using CentOS 5.6
On my workstation, type 4 is cpu, 7 is cache. W/no params list everything.
# dmidecode --type 4,7
<snip>
Bill
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