Troubleshooting Slow Write Speeds on Arch Linux SSD (Crucial BX500)

Checking SSD Health

The first step is to check the health of your SSD using the smartmontools package. Install it with:

sudo pacman -S smartmontools

Then, run:

sudo smartctl -a /dev/sdX

Replace /dev/sdX with your SSD's device identifier. Look for any warning signs, such as:

• Reallocated sectors:
• Uncorrectable sectors:
• Short DRAM refresh cycle:

If you find any issues, consider replacing the SSD.

Updating Firmware

Outdated firmware can cause performance issues. To check for updates:

sudo pacman -S cruisetec-cli

Then:

sudo cruisetool scan --short

Identify your SSD model and check the manufacturer's website for firmware updates.

Disabling Write Caching

Disabling write caching can help improve write performance, but it comes with a trade-off: increased write times and potential data loss. To disable write caching:

sudo vim /etc/fstab

Locate the line with your SSD's mount point, e.g.,:

/dev/sdX1 /mnt/ssd ext4 defaults 0 0

Change it to:

/dev/sdX1 /mnt/ssd ext4 defaults,noatime,nodiratime,discard 0 0

Save and exit.

Tuning Swap Space

Insufficient swap space can lead to system freezing. To check your current swap space:

swapon --show

If necessary, create or expand a swap file:

sudo fallocate -l 1G /swapfile

sudo chmod 600 /swapfile

sudo mkswap /swapfile

sudo swapon /swapfile

Add the following line to /etc/fstab:

/swapfile swap swap defaults 0 0

In conclusion, slow write speeds on an Arch Linux SSD with a Crucial BX500 can be addressed by checking the SSD's health, updating firmware, disabling write caching, and tuning swap space. If none of these solutions work, consider contacting Crucial's support or seeking advice from Arch Linux forums.