Swapiness for Jaunty on AAO 110L

Hi

what is the best swapiness setup for AAO 110l witth 512RAM on Jaunty? Default Jaunty swapiness is 60 but on powersaving tweaks is 1...

 

bump...

 

With 512mb RAM, maybe it's best to leave it at 60?
http://www.a2b-net.com/ubuntu/swappiness

 

Why do you say that?...

 

I think its best to leave it at about 60 unless you are rocking an SSD - in which case writing swap files to the SSD really slows things down - i've got my Swappiness set at 10.

 

Yes my AAO have 8gb SSD, so do you tink swappiness=10 is the best setup?

 

I have happily been using a swappiness of 10 (on an SSD) for quite some time. I don't really know if this is optimal but it certainly works well for me.

 

Why even use a swap at all on a SSD model? Unless you have 512 ram or something that is.. There's always compcache to swap in ram, I dont even use a swap outside of compcache on my HDD model.

 

I would think so, yes. You want to avoid writing to the SSD at all costs, so swappiness=10 seems the best idea IMHO. I was even running without swap at one time, but the darn thing kept running out of memory lol!

 

what is your idea about the swapiness on my A110L (8GB SSD) with 1.5GB RAM ?

 

You dont need a swap partition if you have 1.5GB. I have the same spec and Jaunty runs great. I am also using OpenDNS which speeds up internet browsing for me.

 

<128Mt, 60
256Mt, 50
512Mt, 30
1Gt, 10
>1Gt, 1 (or 0)


i think you should put 30 or 20
just edit gksudo gedit /etc/sysctl.conf
add those lines end

Code:

vm.swappiness=20
vm.vfs_cache_pressure=50

 

Thanks for that post.

Could you please explain why a swappiness value of 30 is best for a machine with 512MB of memory please, and also what the following code line does as i wish to understand further:

Code:

vm.vfs_cache_pressure=50

Thank you.

 

Sysctl's setting vm.swappiness of it, how easily used swap, The smaller value, less swap is used. If the value placed is 0, swap is not used at all.. there are no right values about that.. only orientation if you have central memory.
like
<128Mt, 60
256Mt, 50
512Mt, 30
1Gt, 10
>1Gt, 1 (tai 0)
vm.swappiness default value is 60.

The exception is laptop computers. If you wish, that their harddrive is running as little as possible, you should put the value of not more than 20.. but memory limited old computers its no good to do that.

 

While many people don't even use a swap file, one reason to include one is if you want to use the hibernate function. In this case, your swap needs to be as big as your ram.

 

No point in having a swap-partition at all when you have 1.5GB RAM.
I have a A110L with 1.5GB RAM and I don't use swap at all. Most of the time I use less than 25% of the available RAM anyways.