Gentoo Archives: gentoo-amd64

From: Wil Reichert <wil.reichert@×××××.com>
To: gentoo-amd64@l.g.o
Subject: Re: [gentoo-amd64] I can use only 3GB aout of install 6GB
Date: Wed, 06 May 2009 13:34:11
Message-Id: 7a329d910905060634l28fe75a3qac43a70706458ed9@mail.gmail.com
In Reply to: [gentoo-amd64] I can use only 3GB aout of install 6GB by Nadav Horesh
1 2009/5/6 Nadav Horesh <nadavh@×××××××××××.com>:
2 >
3 > I recently added 4GB to the existing 2GB I had. The BIOS and lshw recognize the memory configuration (2 dimm of 1G and 2 of 2G), but /prc/meminfo and a test program I ran recognize 3.2GB.
4 >
5 > My system configuration:
6 > cpu: core2 6600
7 > chipset:  DP965LT (Intel's motherboard)
8 >
9 > $ uname -a
10 > Linux nadav 2.6.27-gentoo-r8 #1 SMP PREEMPT Wed May 6 16:53:07 IDT 2009 x86_64 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz GenuineIntel GNU/Linux
11 >
12 > c$ cat /proc/meminfo
13 >
14 > MemTotal:      3347392 kB
15 > MemFree:       2687760 kB
16 > Buffers:         22912 kB
17 > Cached:         350868 kB
18 > SwapCached:          0 kB
19 > Active:         315244 kB
20 > Inactive:       268072 kB
21 > SwapTotal:     2008116 kB
22 > SwapFree:      2008116 kB
23 > Dirty:              24 kB
24 > Writeback:           0 kB
25 > AnonPages:      209536 kB
26 > Mapped:          75700 kB
27 > Slab:            30152 kB
28 > SReclaimable:    17292 kB
29 > SUnreclaim:      12860 kB
30 > PageTables:      11760 kB
31 > NFS_Unstable:        0 kB
32 > Bounce:              0 kB
33 > WritebackTmp:        0 kB
34 > CommitLimit:   3681812 kB
35 > Committed_AS:   473288 kB
36 > VmallocTotal: 34359738367 kB
37 > VmallocUsed:    176468 kB
38 > VmallocChunk: 34359561723 kB
39 > DirectMap4k:     15360 kB
40 > DirectMap2M:   3391488 kB
41 >
42 >
43 > Memory report out of lshw:
44 >
45 >
46 >     *-memory
47 >          description: System Memory
48 >          physical id: 17
49 >          slot: System board or motherboard
50 >          size: 6GiB
51 >        *-bank:0
52 >             description: DIMM Synchronous 667 MHz (1.5 ns)
53 >             product: 0x202020202020202020202020202020202020
54 >             vendor: 0x7F98000000000000
55 >             physical id: 0
56 >             serial: 0xD1CCDFF7
57 >             slot: J6H1
58 >             size: 2GiB
59 >             width: 64 bits
60 >             clock: 667MHz (1.5ns)
61 >        *-bank:1
62 >             description: DIMM Synchronous 667 MHz (1.5 ns)
63 >             product: 0x000000000000000000000000000000000000
64 >             vendor: 0x7F98000000000000
65 >             physical id: 1
66 >             serial: 0x6C06E0E5
67 >             slot: J6H2
68 >             size: 1GiB
69 >             width: 64 bits
70 >             clock: 667MHz (1.5ns)
71 >        *-bank:2
72 >             description: DIMM Synchronous 667 MHz (1.5 ns)
73 >             product: 0x202020202020202020202020202020202020
74 >             vendor: 0x7F98000000000000
75 >             physical id: 2
76 >             serial: 0xD1CCFFF7
77 >             slot: J6J1
78 >             size: 2GiB
79 >             width: 64 bits
80 >             clock: 667MHz (1.5ns)
81 >        *-bank:3
82 >             description: DIMM Synchronous 667 MHz (1.5 ns)
83 >             product: 0x000000000000000000000000000000000000
84 >             vendor: 0x7F98000000000000
85 >             physical id: 3
86 >             serial: 0x660663BC
87 >             slot: J6J2
88 >             size: 1GiB
89 >             width: 64 bits
90 >             clock: 667MHz (1.5ns)
91 >
92 >  Any idea?
93 >
94 >    Nadav
95 >
96 >
97
98 What kind of RAM did you use? Intel motherboard are extremely picky
99 about RAM - CAS 5 1.8V stuff only. I think they mandate the PCB is
100 green as well =). Still tho, odd lshw is picking up all the DIMMS are
101 installed but OS can't see it. +1 on memtest.