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This is the comment you were replying to, attached to the article A couple of minor ext3 performance tweaks:

#19 Re: A couple of minor ext3 performance tweaks Posted by Anonymous (194.42.xx.xx) on Thu 17 Jul 2008 at 12:35 You can further improve Ext3 performance by keeping the file system’s journal on another device. An external log improves performance because the log updates are saved to a different partition than the log for the corresponding file system. This reduces the number of hard disk seeks. To create an external Ext3 log, run the mkfs utility on the journal device, making sure that the block size of the external journal is the same block size as the Ext3 file system. For example, the commands… $ mkfs.ext3 –b 4096 –O journal_dev /dev/hda1 $ mkfs.ext3 –b 4096 –J device=/dev/hda1 /dev/hdb1 … /dev/hda1 is used as the external log for the Ext3 file system on /dev/hdb1. Today I felt like sharing my toys with the other children ;)

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