Northbridge errors

Northbridge errors to console and messages log file
If your console prints error messages similar to the message below then you probably have a memory problem on your web server. For me the messages appeared every few minutes and would even show whilst I was editing files with vim. The errors will also be in /var/log/messages.

The solution was to contact 1&1, who manage the server and after a rather dismal 15 hour delay, during which time I received not a single piece of feedback from them, they changed 15 gb of system memory. This resolved the problem.

Message from syslogd@s406085471 at Sep 1 13:08:48 ... kernel:[Hardware Error]: MC4_STATUS[Over|CE|MiscV|-|AddrV|CECC]: 0xdc6a4420011c017b $underscored_file_name =~ s{\s}{_}sg; Message from syslogd@s406085471 at Sep 1 13:08:48 ...e); kernel:[Hardware Error]: Northbridge Error (node 0): L3 ECC data cache error.        my $second_dir = ''; Message from syslogd@s406085471 at Sep  1 13:08:48 ... kernel:[Hardware Error]: cache level: L3/GEN, tx: GEN, mem-tx: EV 