Summary: Severe NFS Server performance loss when upgrading from 2.2.14-6.0.1 to 2.2.14-12. Details: We are running a RedHat 6.2-based NFS file server serving the following types of clients: Solaris 2.7, IRIX 6.2, HP-UX 11.0, AIX 3.4.3, Dec/Alpha OSF1 V4.0, and Redhat 6.1 and 6.2. After upgrading to kernel 2.2.14-12 we have had to revert back to kernel 2.2.14-6.0.1 due to significant NFS Server performance loss which disappeared immedately upon rebooting the 14-6 kernel and reappeared consistently when using 14-12. Nothing else other than the kernel was changed in the environment, so it would appear that the source is a change introduced in the 14.12 kernel. The RedHat 6.2 NFS file server is running on a Dell Dimension XPS T600 with 128MB of RAM. The network uses LinkSys 10/100 workgroup switches running full-duplex. Performance of other networking operations (such as FTP) was unaffected by the different kernels; only NFS was affected.
Opps. That should read AIX 4.3.3 (not 3.4.3!)...
Thanks for the bug report. However, Red Hat no longer maintains this version of the product. Please upgrade to the latest version and open a new bug if the problem persists. The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, and if you believe this bug is interesting to them, please report the problem in the bug tracker at: http://bugzilla.fedora.us/