ディスクの設定情報を表示する2023/07/17 |
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コンピューターに搭載されたディスクの設定等の情報を表示します。
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| [1] | 必要なパッケージをインストールします。 SCSI や SATA 接続のデバイスについては [hdparm]、NVMe 接続の M.2 SSD 等のデバイスについては [nvme-cli] をインストールします。 |
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root@dlp:~# apt -y install hdparm nvme-cli
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| [2] | [hdparm] の基本的な操作です。当例では設定情報の表示のみを例示します。 |
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# ディスクの設定情報を表示 root@dlp:~# hdparm /dev/sda /dev/sda: multcount = 0 (off) IO_support = 1 (32-bit) readonly = 0 (off) readahead = 256 (on) geometry = 116737/255/63, sectors = 1875385008, start = 0 # ディスクの詳細な情報を表示 root@dlp:~# hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: SanDisk Ultra II 960GB
Serial Number: 165261422001
Firmware Revision: X41200RL
Media Serial Num:
Media Manufacturer:
Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
Used: unknown (minor revision code 0x0110)
Supported: 9 8 7 6 5
Likely used: 9
Configuration:
Logical max current
cylinders 16383 0
heads 16 0
sectors/track 63 0
--
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 1875385008
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 915715 MBytes
device size with M = 1000*1000: 960197 MBytes (960 GB)
cache/buffer size = unknown
Form Factor: 2.5 inch
Nominal Media Rotation Rate: Solid State Device
.....
.....
# デバイスとキャッシュの読み出し性能をテストする root@dlp:~# hdparm -Tt /dev/sda /dev/sda: Timing cached reads: 22604 MB in 1.99 seconds = 11359.30 MB/sec Timing buffered disk reads: 1584 MB in 3.00 seconds = 527.44 MB/sec |
| [3] | [nvme-cli] の基本的な操作です。当例では設定情報の表示のみを例示します。 |
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# NVMe デバイスを表示する root@dlp:~# nvme list Node SN Model Namespace Usage Format FW Rev --------------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- /dev/nvme0n1 P02724117355 PLEXTOR PX-1TM8SeY 1 1.02 TB / 1.02 TB 512 B + 0 B 1.00 # デバイス情報を表示する root@dlp:~# nvme id-ctrl -H /dev/nvme0n1 NVME Identify Controller: vid : 0x14a4 ssvid : 0x1b4b sn : P02724117355 mn : PLEXTOR PX-1TM8SeY fr : 1.00 rab : 0 ieee : 002303 cmic : 0 [3:3] : 0 ANA not supported [2:2] : 0 PCI [1:1] : 0 Single Controller [0:0] : 0 Single Port mdts : 5 cntlid : 0x1 ver : 0x10200 rtd3r : 0xf4240 rtd3e : 0x1e8480 oaes : 0 [31:31] : 0 Discovery Log Change Notice Not Supported [27:27] : 0 Zone Descriptor Changed Notices Not Supported [15:15] : 0 Normal NSS Shutdown Event Not Supported ..... ..... # SMART ログを表示する root@dlp:~# nvme smart-log /dev/nvme0n1 Smart Log for NVME device:nvme0n1 namespace-id:ffffffff critical_warning : 0 temperature : 31 C (304 Kelvin) available_spare : 100% available_spare_threshold : 0% percentage_used : 2% endurance group critical warning summary: 0 data_units_read : 18,178,170 data_units_written : 111,692,722 host_read_commands : 128,243,567 host_write_commands : 632,121,321 controller_busy_time : 71,720 power_cycles : 14 power_on_hours : 40,516 unsafe_shutdowns : 3 media_errors : 0 num_err_log_entries : 0 Warning Temperature Time : 0 Critical Composite Temperature Time : 0 Temperature Sensor 1 : 31 C (304 Kelvin) Thermal Management T1 Trans Count : 0 Thermal Management T2 Trans Count : 0 Thermal Management T1 Total Time : 0 Thermal Management T2 Total Time : 0 # エラーログを表示する root@dlp:~# nvme error-log /dev/nvme0n1 Error Log Entries for device:nvme0n1 entries:64 ..... ..... ................. Entry[63] ................. error_count : 0 sqid : 0 cmdid : 0 status_field : 0(SUCCESS: The command completed successfully) phase_tag : 0 parm_err_loc : 0 lba : 0 nsid : 0 vs : 0 trtype : The transport type is not indicated or the error is not transport related. cs : 0 trtype_spec_info: 0 ................. |
| [4] | 接続方式に関係なく使用可能なベンチマークツール [fio (Flexible I/O Tester)] コマンドでのディスク性能のテストです。 |
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root@dlp:~#
root@dev:~# apt -y install fio
df -h /mnt Filesystem Size Used Avail Use% Mounted on /dev/nvme0n1p1 954G 354G 600G 38% /mnt # ブロックサイズ 4K でのシーケンシャルリード性能をテストする root@dlp:~# fio --bs=4k --size=1G --direct=1 --rw=read --numjobs=64 --runtime=10 --group_reporting --name=testjob4K1G --filename=/mnt/testfile4K1G
testjob4K1G: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1
...
fio-3.28
Starting 64 processes
testjob4K1G: Laying out IO file (1 file / 1024MiB)
Jobs: 64 (f=64): [R(64)][100.0%][r=1164MiB/s][r=298k IOPS][eta 00m:00s]
testjob4K1G: (groupid=0, jobs=64): err= 0: pid=1847: Thu Sep 22 05:26:23 2022
read: IOPS=298k, BW=1166MiB/s (1222MB/s)(11.4GiB/10002msec)
clat (usec): min=30, max=2538, avg=213.52, stdev=22.74
lat (usec): min=30, max=2538, avg=213.60, stdev=22.74
clat percentiles (usec):
| 1.00th=[ 180], 5.00th=[ 194], 10.00th=[ 200], 20.00th=[ 204],
| 30.00th=[ 206], 40.00th=[ 210], 50.00th=[ 212], 60.00th=[ 215],
| 70.00th=[ 217], 80.00th=[ 223], 90.00th=[ 231], 95.00th=[ 239],
| 99.00th=[ 260], 99.50th=[ 269], 99.90th=[ 486], 99.95th=[ 529],
| 99.99th=[ 857]
bw ( MiB/s): min= 1131, max= 1189, per=100.00%, avg=1166.69, stdev= 0.20, samples=1216
iops : min=289784, max=304574, avg=298673.32, stdev=51.36, samples=1216
lat (usec) : 50=0.01%, 100=0.02%, 250=98.05%, 500=1.84%, 750=0.07%
lat (usec) : 1000=0.01%
lat (msec) : 2=0.01%, 4=0.01%
cpu : usr=1.24%, sys=3.11%, ctx=2985315, majf=0, minf=918
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=2985023,0,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=1
Run status group 0 (all jobs):
READ: bw=1166MiB/s (1222MB/s), 1166MiB/s-1166MiB/s (1222MB/s-1222MB/s), io=11.4GiB (12.2GB), run=10002-10002msec
Disk stats (read/write):
nvme0n1: ios=2984198/0, merge=0/0, ticks=618777/0, in_queue=618777, util=98.78%
# ブロックサイズ 512K でのシーケンシャルリード性能をテストする root@dlp:~# fio --bs=512k --size=1G --direct=1 --rw=read --numjobs=64 --runtime=10 --group_reporting --name=testjob512K1G --filename=/mnt/testfile512K1G
testjob512K1G: (g=0): rw=read, bs=(R) 512KiB-512KiB, (W) 512KiB-512KiB, (T) 512KiB-512KiB, ioengine=psync, iodepth=1
...
fio-3.28
Starting 64 processes
testjob512K1G: Laying out IO file (1 file / 1024MiB)
Jobs: 64 (f=64): [R(64)][100.0%][r=2223MiB/s][r=4445 IOPS][eta 00m:00s]
testjob512K1G: (groupid=0, jobs=64): err= 0: pid=1935: Thu Sep 22 05:27:49 2022
read: IOPS=4411, BW=2206MiB/s (2313MB/s)(21.6GiB/10036msec)
clat (usec): min=853, max=36694, avg=14474.51, stdev=5347.40
lat (usec): min=853, max=36694, avg=14474.92, stdev=5347.41
clat percentiles (usec):
| 1.00th=[12911], 5.00th=[12911], 10.00th=[12911], 20.00th=[12911],
| 30.00th=[12911], 40.00th=[12911], 50.00th=[12911], 60.00th=[12911],
| 70.00th=[12911], 80.00th=[12911], 90.00th=[13173], 95.00th=[33162],
| 99.00th=[36439], 99.50th=[36439], 99.90th=[36439], 99.95th=[36439],
| 99.99th=[36439]
bw ( MiB/s): min= 1938, max= 2501, per=100.00%, avg=2210.82, stdev= 3.52, samples=1260
iops : min= 3876, max= 5002, avg=4421.65, stdev= 7.04, samples=1260
lat (usec) : 1000=0.01%
lat (msec) : 2=0.02%, 4=0.03%, 10=0.07%, 20=92.42%, 50=7.46%
cpu : usr=0.06%, sys=0.65%, ctx=44441, majf=0, minf=9014
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=44274,0,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=1
Run status group 0 (all jobs):
READ: bw=2206MiB/s (2313MB/s), 2206MiB/s-2206MiB/s (2313MB/s-2313MB/s), io=21.6GiB (23.2GB), run=10036-10036msec
Disk stats (read/write):
nvme0n1: ios=174942/7, merge=0/2, ticks=2497973/128, in_queue=2498127, util=98.83%
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