John R Pierce wrote: > Hemraj S wrote: >> Hi, >> >> I m currently running my production servers on RHEL 4.6 & would like >> to migrate to Centos4.6 as it has more benefits & advantages. I looked >> at the Centos release notes available at >> http://mirror.centos.org/centos/4.6/os/i386/RELEASE-NOTES-en.html and >> understood that the basic difference between RHEL & Centos >> are look/feel related & binaries,functionalities are almost same. But >> when i compared the sysctl values of RHEL4.6 with Centos4.6, i found >> that there are lot of differences in the parameter values. Now my >> question is: >> >> 1) Just like sysctl difference, is there any other difference between >> RHEL & Centos which could vary the performance & needs to be taken >> care during migration. >> 2) When the Centos packages are built, are they built with the same >> configuration as in RHEL or is there any difference. > > the defaults for sysctl should be identical if both systems are running > the same kernel revision on similar hardware. do a `uname -a` on > both. did your rhel4.6 system have anything in /etc/sysctl.conf ? > CentOS is built directly from the SRPM's for the AS configuration of > RHEL, using the exact same options. the precise versions of the > compilers and tools used may vary in some cases as upstream doesn't > fully document their build process (RHEL version X is apparently not > built on a stock RHEL version X development platform, using the supplied > tools). As posted above, the default values should be the same IF the same package sets are installed. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 251 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20080623/05a55227/attachment-0005.sig>