December 13, 20241 yr I have built an Orange Pi 5 Plus systems. I have a 256gb eMMC card which seems to run as speed would expect. Yet when I test the NVMe drive I get slow speeds compared to what is suggested to get. I have seen other people posts that suggest they are getting at least 4gb/s using NVME drives. I have searched for other issues but there is no errors in the logs just can't get the speeds I was expecting. I have the following which suggests at least 5gb/s KINGSTON SNV3S500G I have formatted it using Ext4. root@orangepi5-plus:/boot# hdparm -Tt /dev/nvme0n1 /dev/nvme0n1: Timing cached reads: 2804 MB in 2.00 seconds = 1404.10 MB/sec Timing buffered disk reads: 1394 MB in 3.00 seconds = 464.64 MB/sec
December 13, 20241 yr 8x 1404.10 MB/sec = 11232.8 Mbit/sec = 11.2328 Gbit/sec I don't know if you mix bits and Bytes. If not, how many lanes and at what speed are used ?
December 13, 20241 yr Author This is the speed that I should be getting from the drive. 500GB – 5,000/3,000MB/s Even benchmark sites are showing the following. Sequential Read - 4,334 MBytes/Sec Sequential Write - 3,478 MBytes/Sec Random Seek Read Write (IOPS 32KQD20) - 2,226 MBytes/Sec IOPS 4KQD163 MBytes/Sec
December 14, 20241 yr https://www.bjonnh.net/article/20210721_nvme4k may offer some improvements. What kernel are you using? Edited December 14, 20241 yr by ozacas
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