Hi
Yesterday i upgraded an 1 year old System from 4x1GB (32Bit, No
Memory-Remap) to 4x2GB (64Bit, Memory-Remap)
Today i due to a lucky coincidence i discovered that i have a memory
corruption problem.
This problem happens only with at least 4GB RAM and Memory-Remap. It
happens with any 2 of the 4x2GB RAM-Modules and regardless of slot or
dual or single channel configuration.
After some trying i found a way to "catch" the error. I wrote a small
perl script to fill a tmpfs with 1MB zero-files. Then i MD5 all the
files and discard all with the MD5-sum of a 1MB zero-file.
Here is what hexdump says about the file-content of the "bad"-file when
it is called several times.
:/misc/badram> hexdump bad
000
*
00d50a0 84cf 1fff fd0f
00d50b0
*
00d90a0 161f 1fff 43ff
00d90b0
00d90c0 0001
00d90d0
*
010
:/misc/badram> hexdump bad
000
*
00d50a0 84cf 1fff fd0f
00d50b0
*
00d90a0 e59d 1fff 43bf
00d90b0
00d90c0 0001
00d90d0
*
010
:/misc/badram> hexdump bad
000
*
00d50a0 84cf 1fff fd0f
00d50b0
*
00d90a0 f7fb 1fff 43ff
00d90b0
00d90c0 0001
00d90d0
*
010
:/misc/badram> hexdump bad
000
*
00d50a0 84cf 1fff ff03
00d50b0
*
00d90a0 df3b 1fff 43ff
00d90b0
00d90c0 0001
00d90d0
*
010
Strange is that some parts are static and other parts change.
Kernel is 2.6.23.11.
Kernel is 64Bit/x86-64, Userspace is 32bit. I only need the RAM for a
huge ramdisk, so i don't need 64bit userspace.
Can anybody help me with this problem?
Bis denn
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