SSD Perform Problem

When use orin NX,which has a M.2 GEN4*4 Interface for SSD, so this interface max IO performance should be 8GB/s, but when I use a GEN4 M.2 SSD with this interface , the performance only reached 3.8GB/s. The same SSD can reach 7GB/s on normal PC platform.

Hi wugj,

Are you using the devkit or custom board for Orin NX?
What’s your Jetpack version in use?

Could you enable Jetson Clock before the test?

$ sudo jetson_clocks

Please also share the test steps in your side so that we could verify it locally.

Hi Kevin,

After I run ‘sudo jsetson_clocks’, the performance reached 4.3GB/s, but only half of 8GB/s.

This is my platforam.

My Steps as follows:
1 . Format this SSD;
2. Run fio script :
"sudo fio --ioengine=libaio --randrepeat=0 --norandommap --thread --direct=1 --stonewall --group_reporting --name=mytest --ramp_time=1 --runtime=60 --time_based --numjobs=4 --percentile_list=99:99.9:99.99:99.999:99.9999 --iodepth=32 --filename=/dev/nvme0n1 --rw=write --bs=16384k --output=1024K_seqW.log --log_avg_msec=1000 -write_bw_log=128K_seqW_bw.log --write_iops_log=128K_seqW_iops.log --write_lat_log=128K_seqW_lat.log
"

Hi, do you have any process on this case?