On Fri, 2004-10-22 at 16:26 +0530, Micheal Mukherji wrote: > Buffer is a logical cache maintained by the operating system in the > main memory while cache is actually a physical hardware that the cpu > uses to decrease the effective memory access time. > > Buffer cache is used to store the most recently accessed data from > disk(or what so ever), so that they dont have to be fetched again from > the disk. Its an optimization feature provided by the operating > system. The Cache does similar thing but it sits between the cpu and > the main memory and contains the most recently accessed data and > instructions from the main memory so that in case they are accessed > again, they need not be fetched again, thus improving the performance. > > Does that clear your doubt?? No, because Linux doesn't see the CPU cache. I'd bet my last kopek that Paul is talking about: $ cat /proc/meminfo MemTotal: 1003760 kB MemFree: 89652 kB Buffers: 138752 kB <<<<<<<<<<<<<<< Cached: 326116 kB <<<<<<<<<<<<<<< SwapCached: 7260 kB Active: 542748 kB Inactive: 157536 kB HighTotal: 98240 kB HighFree: 240 kB LowTotal: 905520 kB LowFree: 89412 kB SwapTotal: 2097136 kB SwapFree: 2072328 kB Dirty: 4 kB Writeback: 0 kB Mapped: 300828 kB Slab: 203148 kB Committed_AS: 673336 kB PageTables: 2156 kB VmallocTotal: 114680 kB VmallocUsed: 4172 kB VmallocChunk: 110468 kB -- ----------------------------------------------------------------- Ron Johnson, Jr. Jefferson, LA USA PGP Key ID 8834C06B "For me and windows it became a matter of easy to start with, and becoming increasingly difficult to be productive as time went on, and if something went wrong very difficult to fix, compared to linux's large over head setting up and learning the system with ease of use and the increase in productivity becoming larger the longer I use the system." Rohan Nicholls , The Netherlands
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