Hello BallSportsGear@BIlltu,
This seems to be a common problem for eMMC devices, especially when they are used for multiple write cycles. Several factors can affect the eMMC write performance, such as the file system, the driver, the firmware, the cache, and the wear leveling.
Some possible solutions that you can try are:
- File System Optimization: Ensure your eMMC is using a file system optimized for fast writes, such as a journaled file system. You can also use tools like fstrim or discard to trim the unused blocks and free up space.
- Driver/Firmware Updates: Check for driver and firmware updates for your eMMC device. Updates might enhance performance, fix bugs, or enable new features. You can use the mmc-utils tool to query and update the eMMC firmware.
- Cache Management: Enable or disable the eMMC cache depending on your use case. The cache can improve the write speed by buffering the data, but it can also cause data loss or corruption if the power is interrupted. You can use the mmc cache command to control the cache.
- Wear Leveling: Avoid writing to the same blocks repeatedly, as this can degrade the eMMC lifespan and performance. You can use tools like badblocks or e2fsck to check and mark the bad blocks, and use the mmc extcsd command to monitor the eMMC health status.
I hope this helps you improve your eMMC write speed.
Best Regards
