On 05/10/2010 04:10 PM, Bill Davidsen wrote: > Jatin K wrote: > >> On Monday 10 May 2010 08:29 PM, Bill Davidsen wrote: >> >>> Jatin K wrote: >>> >>> >>>> Dear All >>>> >>>> I've a new Dell Inspiton 1564 laptop with 1GB graphics card and 4GB DDR3 >>>> RAM, FC 12 64bit installed on it , but in system information tab it >>>> shows 3.7GB usable RAM. My Question is "what about the remaining RAM ??" >>>> is it shared with graphics card ? then what is the meaning of dedicated >>>> RAM of my graphics card ( if graphics card shares my installed ram module ) >>>> >>>> any idea ?? >>>> >>>> >>>> >>> Look at the start of /var/log/messages, /proc/mtrr, etc. See if your CPU has PAT >>> capability, etc. >>> >>> >>> >> Thnx Bill >> >> My processor is Intel i5 430 2.27Ghz ( turbo boost up to 2.53Ghz) >> >> and following is the output of cat /proc/mtrr >> --------------------------------------------------------------------------------------- >> reg00: base=0x0ffe00000 ( 4094MB), size= 2MB, count=1: write-protect >> reg01: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back >> reg02: base=0x080000000 ( 2048MB), size= 1024MB, count=1: write-back >> reg03: base=0x100000000 ( 4096MB), size= 1024MB, count=1: write-back >> reg04: base=0x138000000 ( 4992MB), size= 128MB, count=1: uncachable >> ----------------------------------------------------------------------------------------- >> >> can you have a look at it ..? is it explaining something ????? >> >> > It may explain, note that you have 3GB starting at zero, a hole, and 1GB > starting at 4GB. I'm surprised that the system did that well considering you > have 2x2GB DIMMs. > > There are two more things you can look at, /proc/meminfo will show what the > system views as usable memory, and the output of dmidecode will show tons of > stuff, but there will be one info block per DIMM which shows information on just > that DIMM. I suspect you are getting a few MB of RAM shared for video, or > something like that. The information in /var/log/messages will give more detail > about how the memory is being allocated, but it's unlikely to lead to recovering > more useful space. > > At least you have learned a lot about looking at your system, score one more for > "things I learned while looking for something else." > > Another thing you can do is check your BIOS. There is a setting where you can set up some parameters. This would probably be in the advanced chipset features. -- Jerry Feldman <gaf@xxxxxxx> Boston Linux and Unix PGP key id: 537C5846 PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB CA3B 4607 4319 537C 5846
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