Recycling Swap | Wizworks

▤ Summary

Now and then, heavily used systems may need to have their swap usage cycled (reset) to increase performance. There are many occasions where even though a system has enough RAM, there may still be a growing swap usage. The steps I outline here are safe to run on a production host to reduce swap usage and return swap contents to RAM. We now want to force the system to move swap contents back to RAM where it belongs. It should be easy to write a cron job to check swap usage and periodically do this when swap usage goes above an acceptable threshold.

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