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Hi,
As I understand it meta-data is cached in the buffer cache and file data is cached in the page
cache. Is this assertion correct? I've noticed that if I "cat /proc/meminfo" on one of my standard
user systems the "page cache" is always larger than the "buffer cache." For instance:
total: used: free: shared: buffers: cached:
Mem: 64864256 60985344 3878912 59654144 1679360 15728640
Swap: 131567616 958464 130609152
MemTotal: 63344 kB
MemFree: 3788 kB
MemShared: 58256 kB
Buffers: 1640 kB
Cached: 15360 kB
SwapTotal: 128484 kB
SwapFree: 127548 kB
However, on my dedicated squid based proxy servers the "buffer cache" seems to always be larger
than the "page cache." For instance:
total: used: free: shared: buffers: cached:
Mem: 131137536 129204224 1933312 7274496 72957952 3850240
Swap: 131084288 18731008 112353280
MemTotal: 128064 kB
MemFree: 1888 kB
MemShared: 7104 kB
Buffers: 71248 kB
Cached: 3760 kB
SwapTotal: 128012 kB
SwapFree: 109720 kB
Why? Is the Linux memory management architecture similar to the SVR4 VM
architecture?
Thanks,
Scott Gray
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