I installed Samsung nvme 960 ssd on my laptop a few days ago which has max write speed up to 1500MB/s. Performance improved greatly but writing speed max at 600MB/s when I test benchmark with Disk software.
First I thought reason of slow write speed might be driver issue with linux or my hardware. But could not shake it, so tested with Ubuntu 17.10 live and found the same result. Then just to be sure I tested benchmark on live Linux Mint 18.2 and found write speed maxed at 1550MB/s! I have attached screenshots of both tests.
I was hoping if anyone can help me fix this slow write speed on Ubuntu. My laptop is Asus N552VX (i5 6300HQ, 8GB ram, 4GB Nvidia 950 gfx, Ubuntu 17.10).
After some feedback from other users on facebook, I did live testing again using old Ubuntu and latest Mint. Here is the result:
- Ubuntu 16.04.0 (kernel 4.4) = write speed 1.3 GB/s and read 2.0 GB/s.
- Mint 18.3 (kernel 4.10) = write speed 510 MB/s and read 3.0 GB/s.
So it seems latest kernel or updated latest distro is not efficient with resource usage. Though I am not sure if the new kernel is the reason or some other updated software. Hopefully in future, there will be some fix or improvement.