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LinuxJournal: Linux Maximus, Part 2: the RAW Facts on Filesystems

Feb 26, 2002, 03:18 (0 Talkback[s])
(Other stories by Bert Scalzo)
The goal of this series on maximizing the performance of Linux systems is to offer some relatively simple yet highly effective tuning ideas. Moreover, all such suggestions must adhere to the KISS (keep it simple, stupid) ideal. All tuning techniques must be both easily implemented and easily measured. Our ideal technique must fit this model: perform a baseline benchmark, implement the proposed change, perform a comparative benchmark and end with a big smile.

In part one of this series, we discussed enterprise-level performance with databases like Oracle, and we obtained over a 1000% improvement in database load times and a 50% improvement in the number of transactions per second. Although some of the techniques discussed in part one are overly basic in nature (i.e., DBA 101 and Linux System Admin 101), it was necessary to start at the beginning so as not to miss any low-hanging fruits along the way. With the foundation in place, it's now time to tackle slightly more interesting and challenging tuning concepts.

This time we'll examine Linux multi-devices (RAID), logical volume managers (LVM), cooked versus raw filesystems and regular versus journalized filesystems. I guarantee that some of the enclosed benchmark results and conclusions will surprise you.

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