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On 12/30/2011 12:34 AM, Claudio Roberto França Pereira wrote: |
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> Anyway, for the last days, my machine has been really slow, with mouse |
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> lag, input delay, and other things. I imediately associated it to the |
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> lack of free RAM, but I always rushed to check the RAM usage with htop |
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> and it were never really high. So today I decided to turn my swap |
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> partition off. And the system is FLYING. I mean, it's pratically a new |
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> machine, now it's usable and reliable. |
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> [...] |
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Usable, yes. Reliable, no ;-) Once RAM runs out, random processes get |
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killed. Possible data loss due to that. |
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> So, should I ban swap partitions entirely from my life? Is that ok? |
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No. You simply tweak swappiness. In your /etc/sysctl.conf, add this: |
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vm.swappiness = 20 |
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The default value is 60. Which makes the system use swap very early on. |
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With 20, you pretty much will swap only when really needed. I've read |
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somewhere that values lower than 20 are not recommended, but I don't |
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remember where or why. |
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