Hi All, We have installed CentOS 5.3 x86_64 in an HP DL585 server with AMD Opteron 64 bit processor and 16 GB RAM. The kernel version is 2.6.18-128.el5 . Now this has thrown an error message in /var/log/message, Jul 3 21:41:11 db1 kernel: EDAC k8 MC0: general bus error: participating processor(local node origin), time-out(no timeout) memory transaction type(generic read), mem or i/o(mem access), cache level(generic) Jul 3 21:41:11 db1 kernel: EDAC MC0: CE page 0x65bc7, offset 0x6a0, grain 8, syndrome 0x6e1a, row 0, channel 0, label "": k8_edac Jul 3 21:41:11 db1 kernel: EDAC k8 MC0: extended error code: ECC chipkill x4 error Jul 3 22:00:00 db1 ntpdate[3813]: step time server 120.88.46.10 offset -4.375417 sec Jul 3 22:12:57 db1 kernel: EDAC k8 MC0: general bus error: participating processor(local node origin), time-out(no timeout) memory transaction type(generic read), mem or i/o(mem access), cache level(generic) Jul 3 22:12:57 db1 kernel: EDAC MC0: CE page 0x65bc7, offset 0x6a0, grain 8, syndrome 0x6e1a, row 0, channel 0, label "": k8_edac Jul 3 22:12:57 db1 kernel: EDAC k8 MC0: extended error code: ECC chipkill x4 error I understand this is an error message from Error Detection And Control module and just wanna confirm that this is not a kernel or software related issue. If Hardware related is it confined only to the Physical memory stick installed or processor related? Any hint on this?? Regards, Kurian Thayil. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090704/ab749883/attachment-0004.html>