Re: swapiness

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Author: Michael
Date:  
To: Main PLUG discussion list
Subject: Re: swapiness
What am i doing incorrectly?

$ sudo cat /proc/sys/vm/swappiness
60
bmike1@MikesBeast ~ $ sudo cat 30>> /proc/sys/vm/swappiness
bash: /proc/sys/vm/swappiness: Permission denied
bmike1@MikesBeast ~ $ sudo gedit
bmike1@MikesBeast ~ $ sudo gedit /proc/sys/vm/swappiness

** (gedit:10639): WARNING **: Hit unhandled case 13 (Error writing to file:
Invalid argument) in parse_error.

** (gedit:10639): WARNING **: Hit unhandled case 13 (Error writing to file:
Invalid argument) in parse_error.
bmike1@MikesBeast ~ $ sudo cat >> /proc/sys/vm/swappiness<<eof
> 1
> eof

bash: /proc/sys/vm/swappiness: Permission denied
bmike1@MikesBeast ~ $ sudo cat >> /proc/sys/vm/swappiness<<eof
1
eof
^C
bmike1@MikesBeast ~ $ sudo cat /proc/sys/vm/swappiness
1

WHATEVER! lol

On Tue, Mar 1, 2016 at 12:43 AM, Michael <> wrote:

> have a desktop. in any case I searched google this swapiness question and
> here is what it says:
>
> "
> After rebooting the swappiness is set to 10. This can be checked by
> running the following command in a terminal: sudo cat
> /proc/sys/vm/swappiness.
> The swap tendency can have a value of 0 (fully off) to 100 (swap is
> constantly used).
> A workable and practical rule for changing the swappiness can be:
> 1 GB or more RAM: 10
> Less than 1 GB of RAM: 1
> *Tip:*
> Your computer has less than 512 MB ​​of RAM? Try to change the
> swap tendency to 0 (zero). With lower amount of memory installed, this
> might even give a better result then changing the swap tendency to 1.
> "
>
> Why is 0 better than 1?
>
> On Tue, Mar 1, 2016 at 12:38 AM, Kevin Fries <> wrote:
>
>> Linux is not Windows. Linux can, and will run without using swap if it
>> can. Linux will remain RAM resident unless it has to. So, what they are
>> telling you is this... If you don't need swap, don't define it.
>>
>> There is one exception to this rule, since you are using a laptop. There
>> are two instant on technologies, sleep and hibernate. One of the will
>> stash the state to RAM, the other to swap. I forget which is which. But
>> if it needs to go to swap, you will need a swap file equal to RAM if you
>> use that feature.
>>
>> Kevin
>> On Feb 29, 2016 10:32 PM, "Michael" <> wrote:
>>
>>> swapiness=..... 0? Remember; I am computer-illiterate!
>>>
>>> On Mon, Feb 29, 2016 at 11:47 PM, Todd Millecam <>
>>> wrote:
>>>
>>>> Disable swap. Never activate it on boot. If you start reaching oom
>>>> conditions, turn it back on.
>>>>
>>>> On Mon, Feb 29, 2016 at 9:38 PM, Michael <> wrote:
>>>>
>>>>> What do you recommend you reduce swapiness to for machines that have
>>>>> plenty of memory that will probably never be filled?
>>>>>
>>>>> --
>>>>> :-)~MIKE~(-:
>>>>>
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>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Todd Millecam
>>>>
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>>>
>>>
>>>
>>> --
>>> :-)~MIKE~(-:
>>>
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>>
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>
>
>
> --
> :-)~MIKE~(-:
>




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