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Are there ways to keep this at a minimum or to limit it to only when necessary?

This is from powertop.

I suppose with Firefox there is not much that can be done unless history/cookies/cache/etc are set to never be saved.

The program 'firefox-bin' is writing to file 'webappsstore.sqlite' on /dev/sda6.
This prevents the disk from going to powersave mode.

What is this? I don't have a Web App Store addon of any kind.

The program 'firefox-bin' is writing to file 'cookies.sqlite' on /dev/sda6.
This prevents the disk from going to powersave mode.

The program firefox-bin' is writing to file 'places.sqlite-wal' on /dev/sda6.
This prevents the disk from going to powersave mode.

What about the other apps?

The program 'flush-8:0' is writing to file '_CACHE_003_' on /dev/sda6.
This prevents the disk from going to powersave mode.

The program 'dconf-service' is writing to file 'user.62VC1V' on /dev/sda6.
This prevents the disk from going to powersave mode.

The program 'unity-panel-ser' is writing to file 'user' on /dev/sda6.
This prevents the disk from going to powersave mode.
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2 Answers 2

Most disk activity in your case (except for the last two) is done by firefox, saving data and history in caches.

To reduce this you can

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Thanks, the Ramdisk is an interesting idea. :D –  Marky Sep 13 '11 at 22:05

I think if the app haven't got a option for this you only can remove them on your own I would recommend a logrotate script or did I understand your question wrong? With a logrotate script you could automate this. If I am wrong please correct me.

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Thanks. Logrotate, I believe, does not prevent apps from writing logs to disk. It only manages it by compressing and rotating logs after reaching a size or after a given time. –  Marky Sep 13 '11 at 22:11
    
You can remove logs with logrotate also but yes it doesn't prevent from writing logs. –  Sebastian Grebe Sep 14 '11 at 17:25

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