Optional Preparation

Speed up compilation using RAM Disk & SAWP File.

Note

You can execute these steps manually or run automated scripts AFTER reading them: Link To Automated Scripts

REMEMBER: This part is done via the root account of the host.

This part is optional but higly recommended.

Mounting A RAM Disk

One way to reduce disk access and prolonging the life of the disk as well as to speed up compilation in many cases, is by using a RAM Disk.

Note you need a decent amount of ram that is dynamically used (this won't be used when you are not building a package). Recommended are 4 GiB or more.

Mounting '/pkgmk' as type: tmpfs

Set size=80% or a defined number e.g. size=3G

mount -v -t tmpfs -o defaults,noatime,size=80%  pkgmk /pkgmk

Hint

This is only temporar, in case you reboot the host during the following steps: you must re-do this.

NOTE for later: since you are now compiling in memory there is no point in keeping a compiler flag -pipe as this will decrease performance.

Verify 'pkgmk' tmpfs Is Enabled

df -h

Creating A SWAP-File

Example uses 6GiB

fallocate -l 6G /lfs.swap

If fallocate fails or is not installed, use the dd command to create the file.

Formating The SWAP-File

mkswap /lfs.swap

Optional 'chmod' The SWAP-File

chmod 600 /lfs.swap

Enable The SWAP-File

swapon /lfs.swap

Verify iThe SWAP-File Is Enabled

free -h

Useful Commands

One can run this in another terminal during compilation.

To Check RAM/SWAP Usage

free -h

Automated Scripts

If you did not manually execute these steps, you can run the automated scripts from the root account of the host.

03_optional_preparation.sh

See also Helper Scripts