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NVMe slow Write speed in Linux than Windows
Mahfuz_SS_EHL
Host Rep, Veteran
in Help
Hello,
I had a previous post for the same issue but this time I'm confirmed about the issue. Prior, I thought the problem is only with me but now, I can see there are discussions globally.
Using a Samsung EVO+ 970 1TB, I'm getting 1.1GB/s Write in CentOS 7 but in Windows 10, it's 2.5GB/s+.
Upon digging more, I found there are quite a few topics around:
https://www.py4u.net/discuss/1131425
The issue is same alike that is described in the askubuntu.com. You can see the user posted is getting 500-600 MB in first screenshot but in Windows he's getting 1GB/s & later on Linux Mint, he's getting 2GB/s.
When I install windows, the difference is clearly noticable. Any guess ??
Regards.
Comments
Caching
btw. keep in mind, that there two revisions of 970 EVO Plus (old one in horizontal box, and new one in vertical box) with performance differences, so take it in to consideration if comparing your scores with results from internet
https://arstechnica.com/gadgets/2021/08/samsung-seemingly-caught-swapping-components-in-its-970-evo-plus-ssds/
of course, it does not matter if you are running (exactly the same) tests in both environments (Linux and Windows) on your specific piece
You dont mention what filesystem you are using on linux. Is it the same exact drive using NTFS with both filesystems? if you are using NTFS3g to write it is a FUSE based filesystem (runs in userspace) and it is slow. The newest kernels are putting in kernel native NTFS in them which is much faster.
should be 'both operating systems'
Could be related to sector size, partitioning, and/or a combination of caching and mount configuration.
Filesystem in Linux is xfs. Windows is NTFS.