On 08/16/2018 08:21 PM, Kelly Dean wrote:
> 
> [email protected] writes:
> 
>> I also disabled mine in the AppVM's with no issues - although for some
>> reason it magically re-activates when I update which is aggravating and
>> I was wondering why that is if anyone can answer me.
> 
> How are you disabling it? Instead of editing /etc/sysctl.conf, just make a 
> new file, e.g. /etc/sysctl.d/noswap.conf, with:
> vm.swappiness = 1

I edit /etc/fstab to remove the swap partition, it sticks in dom0 but
doesn't stick in the VM's every time I update the template it re-enables.

> That will avoid losing your setting if sysctl.conf is overwritten during 
> system update.
> 
> Setting swappiness to 0 (to disable swapping) is a bad idea, since it will 
> subject you to the OOM killer, which is a result of the memory-overcommitment 
> brain damage (conflating allocation of virtual address space, physical 
> memory, and swap space) that Linux and its ecosystem inherited from Unix and 
> POSIX. The vm.overcommit_memory option can't fix that, but using 1 instead of 
> 0 for swappiness will swap only as much as necessary to avoid the OOM killer.
> 

If I have swap enabled I will ruin my SSD...so I will pass.

Like I said on a workstation with 64GB RAM there is absolutely zero
reason to have swap I have never even used half of that RAM and even on
my 8GB laptop I have never had any issues.

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