Richard Purdie wrote: > On Mon, 2011-07-04 at 13:35 +0800, Cui, Dexuan wrote: >> In meta/recipes-core/initrdscripts/files/init-install.sh, we have >> >> # 5% for the swap >> swap_ratio=5 # dexuan: this variable is not used at >> all! ... >> swap_size=$((disk_size*5/100)) >> >> This algorithm seems too wasty -- e.g., for a CrownBay box with a >> 160GB disk, we would create a 8GB swap partition while the box has >> only 1GB memory. >> >> What's the proper swap size? >> This link http://www.cyberciti.biz/tips/linux-swap-space.html >> discussed this and I think the below algorithm seems suitable for >> us: >> >> Systems with 2GB of ram or less require the same size of swap space >> Systems with 2GB to 4GB of ram require a minimum of 2GB of swap space >> Systems with 4GB to 16GB of ram require a minimum of 4GB of swap >> space >> Systems with 16GB to 64GB of ram require a minimum of 8GB of swap >> space >> Systems with 64GB to 256GB of ram require a minimum of 16GB of swap >> space >> >> Any comment? > > Looks like a much better idea to me, I'll take patches :) Ok, I'll try to make a patch for this algorithm.
> For reference if you want to do suspend to disk (swap) you need a lot > of swap space btw. Still no where near that much though! Does (or should )Yocto Linux support suspend-to-disk? I'm not sure about this. BTW: Linux can alse use a regular file as swap area. So in case the swap size is not enough (e.g., for suspend-to-disk), I think a user could create a big enough file to meet the need (I didn't test this with Linux yet). Thanks, -- Dexuan _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core