<br><br><div class="gmail_quote">On Thu, Nov 24, 2011 at 3:10 AM, Dean S. Messing <span dir="ltr"><<a href="mailto:deanm@sharplabs.com">deanm@sharplabs.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On Thu, 24 Nov 2011, Soham Chakraborty wrote.<br>
> On Thu, Nov 24, 2011 at 2:11 AM, Dean S. Messing wrote:<br>
> > Do you know what this message actually means?<br>
> ><br>
><br>
> It basically means memory error checking on a memory module along with a<br>
> parity checking bit. It is calculated when one byte of memory is written<br>
> and then again when it is read. If the parity has changed, then the memory<br>
> has been changed.<br>
><br>
> Since you have a correctable error, it shouldn't be any problem with the<br>
> memory module.<br>
<br>
</div>Thanks! But now I'm curious: Is the edac module running an entire<br>
memory check each time it writes this error out? If not, how is it<br>
detecting this? Is the kernel simply doing this parity check on each<br>
r/w?<br>
<br>
Also, if it's not a problem with the memory module, what might it be a<br>
problem with? This just started happening night before last. The error<br>
messages don't appear in any previous "messages" files.<br></blockquote><div>I am really not sure about how internally it works. If no one answers, I will try to gather some information. Also, can you do a lsmod and grep with edac. </div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im"><br>
> Also, you can blacklist the edac module, afaik and let the<br>
> BIOS do the error detection and correction.<br>
<br>
</div>Good to know. Thanks. But I'd like to trace and fix whatever is causing<br>
the problem, if indeed there is one. </blockquote><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div><div></div><div class="h5"><br>
Dean<br>
<br>
--<br>
users mailing list<br>
<a href="mailto:users@lists.fedoraproject.org">users@lists.fedoraproject.org</a><br>
To unsubscribe or change subscription options:<br>
<a href="https://admin.fedoraproject.org/mailman/listinfo/users" target="_blank">https://admin.fedoraproject.org/mailman/listinfo/users</a><br>
Guidelines: <a href="http://fedoraproject.org/wiki/Mailing_list_guidelines" target="_blank">http://fedoraproject.org/wiki/Mailing_list_guidelines</a><br>
</div></div></blockquote></div><br><div>Thanks,</div><div>Soham</div>