sandisk sn520的测试结果
sandisk sn520的测试结果
硬盘型号 sandisk sn520，容量 512G, m2 接口 nvme 协议， pcie 3.0 x4。
技嘉x99 + 10G M2
在技嘉 x99 ud4 主板上，m2 接口为 10G 带宽。
物理机安装 ubuntu 20.04 系统， 5.4 内核。
基本信息
$ lspci | grep disk
05:00.0 Non-Volatile memory controller: Sandisk Corp WD Black 2018/PC SN520 NVMe SSD (rev 01)
磁盘数据：
Disk /dev/nvme0n1: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: WDC WDS500G1B0C-00S6U0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: AB8D3D88-0124-404E-B1BC-658E567C569D
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 1050623 1048576 512M EFI System
/dev/nvme0n1p2 1050624 839911423 838860800 400G Linux filesystem
/dev/nvme0n1p3 839911424 976771071 136859648 65.3G Linux filesystem
分区信息：
sudo hdparm /dev/nvme0n1p3
/dev/nvme0n1p3:
HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
readonly = 0 (off)
readahead = 256 (on)
HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
geometry = 66826/64/32, sectors = 136859648, start = 839911424
速度测试
读取速度测试：
sudo hdparm -t /dev/nvme0n1p3
/dev/nvme0n1p3:
HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
Timing buffered disk reads: 2294 MB in 3.00 seconds = 764.43 MB/sec
缓存读取速度测试：
sudo hdparm -T /dev/nvme0n1p3
/dev/nvme0n1p3:
Timing cached reads: 20412 MB in 1.99 seconds = 10261.23 MB/sec