Run a memtest instead. If it fails, simply replace it.<br><br><div class="gmail_quote">On Tue, Oct 6, 2009 at 9:28 PM, Michael Schumacher <span dir="ltr"><<a href="mailto:michael.schumacher@pamas.de">michael.schumacher@pamas.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>
<br>
I updated a server yesterday from<br>
<br>
"kernel 2.6.18-128.7.1.el5xen" to "kernel 2.6.18-164.el5xen"<br>
<br>
After rebooting, my message log is flooded every second or so with this error messages:<br>
<br>
Oct 6 14:52:20 xenserver1 kernel: EDAC MC0: UE row 0, channel-a= 0 channel-b= 1 labels "-": NON-FATAL recoverable (Branch=0 DRAM-Bank=0 Buffer ID = 0 RDWR=Read RAS=0 CAS=0 NON-FATAL recovera<br>
ble Err=0x2000 (FB-DIMM Configuration Write error on first attempt))<br>
<br>
and<br>
<br>
Oct 6 15:17:23 xenserver1 kernel: EDAC MC0: CE row 0, channel 0, label "": Corrected error (Branch=0 DRAM-Bank=0 RDWR=Read RAS=0 CAS=0, CE Err=0x10000 (Correctable Non-Mirrored Demand Data E<br>
CC))<br>
<br>
The machine is a new Tyan S5397 mobo with 16GB Kingston RAM KVR667D2D4F5K2/8G<br>
<br>
Removing and replacing memory to different locations doesn't make any<br>
difference.<br>
<br>
After some digging, I noticed that the new kernel has added support<br>
for the i5400 chipset. I found some reference that the new kernel has<br>
this error reporting capability the old one hadn't.<br>
<br>
Question1: how many recoverable RAM errors are acceptable?<br>
Question2: The error appears always with the same id in the error<br>
message. Mobo problem?<br>
Question3: Are there any recommended BIOS settings to operate the RAM<br>
slower to see if the problem disappears?<br>
Question4: Any other proposals.<br>
<br>
Being located in Germany makes the "just return it to the dealer"<br>
proposal quite unattractive.<br>
<br>
<br>
best regards<br>
---<br>
Michael Schumacher<br>
PAMAS Partikelmess- und Analysesysteme GmbH<br>
Dieselstr.10, D-71277 Rutesheim<br>
Tel +49-7152-99630<br>
Fax +49-7152-996333<br>
Geschäftsführer: Gerhard Schreck<br>
Handelsregister B Stuttgart HRB 252024<br>
<br>
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</blockquote></div><br>