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Accepted
Evan Carroll
Asked: 2018-04-25 06:05:23 +0800 CST

当 memtester 的输出显示内存不好时，我该怎么办？

  • 772

Memtester 已输出以下响应，

memtester version 4.3.0 (64-bit)
Copyright (C) 2001-2012 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffffffffffff000
want 10240MB (10737418240 bytes)
got  10240MB (10737418240 bytes), trying mlock ...locked.
Loop 1/1:
  Stuck Address       : testing   1FAILURE: possible bad address line at offset 0x12325b7a8.
Skipping to next test...
  Random Value        : ok
FAILURE: 0xa003776ad640ac0c != 0xe003776ad640ac0c at offset 0x7a4f2680.
  Compare XOR         : FAILURE: 0xe7139f89d94112c0 != 0x27139f89d94112c0 at offset 0x7a4f2680.
FAILURE: 0x4e53ee3a9704bdf5 != 0x4a53ee3a9704bdf5 at offset 0x950b4930.
  Compare SUB         : FAILURE: 0x96ecab120464e9c0 != 0xd6ecab120464e9c0 at offset 0x7a4f2680.
FAILURE: 0x7f67022cef637b99 != 0x2b67022cef637b99 at offset 0x950b4930.
FAILURE: 0x96c38c9f6e6dd229 != 0xd6c38c9f6e6dd229 at offset 0xe40d2b50.
  Compare MUL         : FAILURE: 0x00000001 != 0x00000002 at offset 0x69394a08.
FAILURE: 0x00000001 != 0x00000000 at offset 0x950b4930.
FAILURE: 0x400000000000001 != 0x00000001 at offset 0xea6b07a8.
FAILURE: 0x400000000000000 != 0x00000000 at offset 0xfb853610.
FAILURE: 0x00000000 != 0x800000000000000 at offset 0x12bf3ed10.
  Compare DIV         : FAILURE: 0x777fd9f1ddc6c1cd != 0x777fd9f1ddc6c1cf at offset 0x69394a08.
FAILURE: 0x777fd9f1ddc6c1cd != 0x7f7fd9f1ddc6c1cd at offset 0x12bf3ed10.
  Compare OR          : FAILURE: 0x367600d19dc6c040 != 0x367600d19dc6c042 at offset 0x69394a08.
FAILURE: 0x367600d19dc6c040 != 0x767600d19dc6c040 at offset 0x7a4f2680.
FAILURE: 0x367600d19dc6c040 != 0x3e7600d19dc6c040 at offset 0x12bf3ed10.
  Compare AND         :   Sequential Increment: ok
  Solid Bits          : testing   0FAILURE: 0x4000000000000000 != 0x00000000 at offset 0x12325b7a8.
  Block Sequential    : testing   0FAILURE: 0x400000000000000 != 0x00000000 at offset 0xfb853610.
  Checkerboard        : testing   1FAILURE: 0xaaaaaaaaaaaaaaaa != 0xeaaaaaaaaaaaaaaa at offset 0x7a4f2680.
  Bit Spread          : testing   1FAILURE: 0xdffffffffffffff5 != 0xfffffffffffffff5 at offset 0x102e353e8.
  Bit Flip            : testing   0FAILURE: 0x4000000000000001 != 0x00000001 at offset 0x12325b7a8.
  Walking Ones        : testing  40FAILURE: 0xdffffeffffffffff != 0xfffffeffffffffff at offset 0x102e353e8.
  Walking Zeroes      : testing   0FAILURE: 0x400000000000001 != 0x00000001 at offset 0xea6b07a8.
FAILURE: 0x400000000000001 != 0x00000001 at offset 0xfb853610.
  8-bit Writes        : -FAILURE: 0xfeefa0a577dfa825 != 0xdeefa0a577dfa825 at offset 0x4bd600e8.
  16-bit Writes       : -FAILURE: 0xf3dfa5fff79e950b != 0xf7dfa5fff79e950b at offset 0x2b04cca8.
FAILURE: 0x3ffb3fc56e7532c1 != 0x7ffb3fc56e7532c1 at offset 0xe40d2b50.

Done.

很明显，这表明记性不好。是否可以在内核或管理程序中将此内存标记为坏并继续使用它？还是将其放入文件 13 并购买替换？

memory ram

2 个回答

  1. Best Answer

    除非您可以合理快速地检测到错误，例如使用 ECC 内存或使用 定期重新启动，memtest否则最好更换模块。您冒着无声数据损坏的风险。

    memmap您可以使用以下选项告诉内核通过保留它来忽略内存（有关详细信息，请参阅内核文档）：

    memmap=nn[KMG]$ss[KMG]

    [KNL,ACPI] 将特定内存标记为保留。要保留的内存区域是 fromss到ss+nn。

    示例：从 0x18690000-0x1869ffff 排除内存

    memmap=64K$0x18690000

    或者

    memmap=0x10000$0x18690000

    某些引导加载程序可能需要在“$”之前使用转义字符，例如 Grub2，否则会吃掉“$”和后面的数字。

    这里的困难部分是弄清楚要保留哪些地址范围；memtester为您提供来自其虚拟地址空间的地址，这些地址与memmap.

    最简单的方法是使用 启动memtest，您会看到类似这样的内容

    4c494e5558726c7a bad mem addr 0x000000012f9eaa78 - 0x000000012f9eaa80 reserved
4c494e5558726c7a bad mem addr 0x00000001b86fe928 - 0x00000001b86fe930 reserved
0x000000012f9eaa80 - 0x00000001b86fe928 pattern 4c494e5558726c7a

    然后内核将停用它检测到的错误范围。您可以使用 继续引导memtest，或者使用保留的地址范围来构造memmap参数。

    • 5

  2. 您可以使用BadRAM补丁。但我非常建议更改模块。内存可能会变得更糟，无声数据损坏在这里是一个非常严重的问题。特别是如果运行数据库或加密，这可能很快就会致命......

    • 2

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