Hi all,
I just bought a laptop with a T4400. On Linux, looking through lshw output turned up the following for the L2 cache:
[cpp] *-cache:1
description: L2 cache
physical id: 6
slot: L2 Cache
size: 1MiB # <--- SIZE
capacity: 4MiB # <--- CAPACITY
capabilities: burst internal write-back unified[/cpp]
I'm curious as to why the size (1Mib) and capacity (4MiB) are different. Surely it can't be possible to stick something on the CPU to increase the L2 cache size, right?? So what does this mean?
I'm running 64-bit Ubuntu Linux. The kernel config says CONFIG_X86_L1_CACHE_BYTES=64 but I found nothing about the L2 cache.
Any idea what this is about? Can I somehow unlock more cache to get a 4MiB L2 cache for free?
Thanks,
GR
I just bought a laptop with a T4400. On Linux, looking through lshw output turned up the following for the L2 cache:
[cpp] *-cache:1
description: L2 cache
physical id: 6
slot: L2 Cache
size: 1MiB # <--- SIZE
capacity: 4MiB # <--- CAPACITY
capabilities: burst internal write-back unified[/cpp]
I'm curious as to why the size (1Mib) and capacity (4MiB) are different. Surely it can't be possible to stick something on the CPU to increase the L2 cache size, right?? So what does this mean?
I'm running 64-bit Ubuntu Linux. The kernel config says CONFIG_X86_L1_CACHE_BYTES=64 but I found nothing about the L2 cache.
Any idea what this is about? Can I somehow unlock more cache to get a 4MiB L2 cache for free?
Thanks,
GR