Hvis du bruker administrert drifting, gjelder ikke dette temaet deg.
Proper configuration of NFS is critical to Blackboard Learn's performance, scalability, and reliability. Blackboard recommends the following NFS optimizations.
noatime
Add noatime option in /etc/fstab.
Linux records information about when files were created and last modified as well as when it was last accessed. There is a cost associated with recording the last access time. The ext2 file system of Linux has an attribute that allows the super-user to mark individual files such that their last access time is not recorded. This may lead to significant performance improvements on often accessed frequently changing files.
net.ipv4.tcp_sack
Add net.ipv4.tcp_sack = 1 to /etc/sysctl.conf on the database server prior to the reboot (Default on RedHat).
Enabling sack coincides with a sharp decline in wait time on log file sync, as was reflected in the decreased number of log file messages.
