Rule 1: Special flags for your mounts
For all SSD devices in your system remove ‘relatime’ if present and add ‘noatime’ so it looks something like this:/dev/sdaX / ext4 defaults,noatime,errors=remount-ro 0 1
/dev/sdaY /home ext4 defaults,noatime,errors=remount-ro 0 2
Rule 2: If it’s temporary move it to RAM
Every day applications generat a lot of log files so to reduce unnecessary writes to the SSD move the temp directories into a ram disk using the ‘tmpfs’ filesystem, which dynamically expands and shrinks as needed.In your /etc/fstab, add the following:
tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/spool tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/tmp tmpfs defaults,noatime,mode=1777 0 0
On the following example the size of the filesystem is 512 megabyte, if you use "defaults" it's 50% of the RAM.
tmpfs /tmp tmpfs size=512m,noatime,mode=1777 0 0
tmpfs /var/spool tmpfs size=512m,noatime,mode=1777 0 0
tmpfs /var/tmp tmpfs size=512m,noatime,mode=1777 0 0
Rule 3: Perform TRIM cleanups periodically
Trim by “Batched Discard” is very simple. This can be manually with the following command in a terminal with root privileges or, for example, regularly via cron job to perform.
sudo fstrim -v /
If you want to let a Batched Discard regularly run automatically so that a straight editor with root privileges , the file /etc/cron.weekly/batched_discard (weekly) or /etc/cron.daily/batched_discard (daily) with the following content:
#!/bin/sh
# call fstrim to trim all mounted file systems which support it
set -e
# call fstrim to trim all mounted file systems which support it
set -e
LOG = /var/log/batched_discard.log
echo "*** $(date -R) ***" >> $LOG
exec /usr/sbin/fstrim -v / >> $LOG
chmod +x batched_discard
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chmod +x batched_discard
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crond.service is enabled by default in Fedora, but doesn't hurt to check.systemctl status crond.service 