To do: data=journal in ext3

Note to self: Try out the data=journal option for ext3 and see if it has any effect on performance in desktop systems. This link, while old, suggests heavy read-write loads might see an improvement for read access times.

I have my doubts, personally. It sounds like that was a possibility seven years ago under the 2.4 kernel, and probably with server loads on server machines. I just don’t expect a 550Mhz Celeron running a lightweight desktop to see an improvement in start and performance times by adding to the filesystem load.

Thanks to issueperson just the same, for pointing it out here.

3 thoughts on “To do: data=journal in ext3

  1. reacocard

    It does in fact improve interactive performance, I’ve tried it myself on both arch and ubuntu with a recent computer (core 2, 2GB). However, as you expect raw I/O performance is NOT increased, instead it is drastically decreased, to around 1/2 of its normal value. However, for most tasks this difference is overshadowed by the interactive benefit obtained. I didn’t notice any significant change in boot times, maybe 1-2 seconds, but file copying was much slower. On the other hand, no matter how much file activity was going on applications remained completely responsive, unlike with normal ext3. Its worth a try if you don’t frequently need to work with large files.

  2. K.Mandla Post author

    That’s good to know. I’ll give it a try this weekend and see what happens. It might be oversimplifying things, but personally I’m only interested in desktop performance, for simple things like starting up and opening a browser. If the benefits appear only at particular times or during particular workloads, I’m not as interested.

  3. Pingback: ext3 with data=journal results « Motho ke motho ka botho

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