Display Disk Settings2022/06/30 |
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Display Disk Settings information on your Computer.
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| [1] | Install required packages. For SCSI or SATA devices, Install [hdparm], For NVMe devices like M.2 SSD, Install [nvme-cli]. |
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[root@dlp ~]# dnf -y install hdparm nvme-cli
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| [2] | This is the basic usage for [hdparm]. |
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# display basic disk settings [root@dlp ~]# hdparm /dev/sdc /dev/sdc: multcount = 0 (off) IO_support = 1 (32-bit) readonly = 0 (off) readahead = 256 (on) geometry = 243201/255/63, sectors = 3907029168, start = 0 # display detailed disk info [root@dlp ~]# hdparm -I /dev/sdc
/dev/sdc:
ATA device, with non-removable media
Model Number: SanDisk SDSSDH32000G
Serial Number: 182501420154
Firmware Revision: X61170RL
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 0x005e)
Supported: 11 10 9 8 7 6 5
Likely used: 11
Configuration:
Logical max current
cylinders 16383 0
heads 16 0
sectors/track 63 0
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LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 3907029168
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 1907729 MBytes
device size with M = 1000*1000: 2000398 MBytes (2000 GB)
cache/buffer size = unknown
Form Factor: 2.5 inch
Nominal Media Rotation Rate: Solid State Device
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# run cached and buffered reads test [root@dlp ~]# hdparm -Tt /dev/sdc /dev/sdc: Timing cached reads: 24446 MB in 2.00 seconds = 12239.55 MB/sec Timing buffered disk reads: 768 MB in 3.00 seconds = 255.70 MB/sec |
| [3] | This is the basic usage for [nvme-cli]. |
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# display NVMe devices [root@dlp ~]# nvme list Node SN Model Namespace Usage Format FW Rev --------------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- /dev/nvme0n1 P02139500965 PLEXTOR PX-1TM10PY 1 1.02 TB / 1.02 TB 512 B + 0 B 1.01 /dev/nvme1n1 P02204400751 PLEXTOR PX-512M10PGN 1 512.11 GB / 512.11 GB 512 B + 0 B 1.03 # display device info [root@dlp ~]# nvme id-ctrl -H /dev/nvme0n1 NVME Identify Controller: vid : 0x1e95 ssvid : 0x1dbe sn : P02139500965 mn : PLEXTOR PX-1TM10PY fr : 1.01 rab : 2 ieee : 38f601 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 : 0x10400 rtd3r : 0x186a0 rtd3e : 0x1e8480 oaes : 0 ..... ..... # display SMART log [root@dlp ~]# nvme smart-log /dev/nvme0n1 Smart Log for NVME device:nvme0n1 namespace-id:ffffffff critical_warning : 0 temperature : 38 C (311 Kelvin) available_spare : 100% available_spare_threshold : 0% percentage_used : 0% endurance group critical warning summary: 0 data_units_read : 108,181 data_units_written : 2,171,940 host_read_commands : 798,902 host_write_commands : 14,460,425 controller_busy_time : 49 power_cycles : 17 power_on_hours : 931 unsafe_shutdowns : 4 media_errors : 0 num_err_log_entries : 0 Warning Temperature Time : 0 Critical Composite Temperature Time : 0 Temperature Sensor 1 : 38 C (311 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 # display error log [root@dlp ~]# nvme error-log /dev/nvme0n1 Error Log Entries for device:nvme0n1 entries:64 ................. Entry[ 0] ................. error_count : 0 sqid : 0 cmdid : 0 status_field : 0(SUCCESS: The command completed successfully) 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] | For benchmarking to any Disk, it's possible to do with [fio (Flexible I/O Tester)] tool. |
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[root@dlp ~]#
dnf -y install fio
# test sequential reads with 4K block size [root@dlp ~]# fio --bs=4k --size=1G --direct=1 --rw=read --numjobs=64 --runtime=10 --group_reporting --name=testjob4K1G --filename=/var/m2/testfile4K1G
testjob4K1G: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1
...
fio-3.27
Starting 64 processes
testjob4K1G: Laying out IO file (1 file / 1024MiB)
Jobs: 64 (f=64): [R(64)][100.0%][r=2537MiB/s][r=650k IOPS][eta 00m:00s]
testjob4K1G: (groupid=0, jobs=64): err= 0: pid=561094: Tue Oct 25 10:10:42 2022
read: IOPS=638k, BW=2493MiB/s (2614MB/s)(24.3GiB/10002msec)
clat (usec): min=5, max=10869, avg=99.88, stdev=73.97
lat (usec): min=5, max=10870, avg=99.92, stdev=73.97
clat percentiles (usec):
| 1.00th=[ 60], 5.00th=[ 64], 10.00th=[ 66], 20.00th=[ 71],
| 30.00th=[ 77], 40.00th=[ 84], 50.00th=[ 92], 60.00th=[ 98],
| 70.00th=[ 105], 80.00th=[ 114], 90.00th=[ 137], 95.00th=[ 161],
| 99.00th=[ 281], 99.50th=[ 351], 99.90th=[ 693], 99.95th=[ 1090],
| 99.99th=[ 2245]
bw ( MiB/s): min= 1932, max= 2608, per=99.96%, avg=2491.64, stdev= 2.24, samples=1216
iops : min=494718, max=667718, avg=637860.53, stdev=572.26, samples=1216
lat (usec) : 10=0.06%, 20=0.02%, 50=0.01%, 100=62.63%, 250=35.85%
lat (usec) : 500=1.28%, 750=0.08%, 1000=0.04%
lat (msec) : 2=0.04%, 4=0.01%, 10=0.01%, 20=0.01%
cpu : usr=0.82%, sys=2.21%, ctx=6382319, majf=2, minf=1188
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=6382170,0,0,0 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=2493MiB/s (2614MB/s), 2493MiB/s-2493MiB/s (2614MB/s-2614MB/s), io=24.3GiB (26.1GB), run=10002-10002msec
Disk stats (read/write):
nvme0n1: ios=6325926/8, merge=0/1, ticks=612577/122, in_queue=612711, util=98.89%
# test sequential reads with 512K block size [root@dlp ~]# fio --bs=512k --size=1G --direct=1 --rw=read --numjobs=64 --runtime=10 --group_reporting --name=testjob512K1G --filename=/var/m2/testfile512K1G
testjob512K1G: (g=0): rw=read, bs=(R) 512KiB-512KiB, (W) 512KiB-512KiB, (T) 512KiB-512KiB, ioengine=psync, iodepth=1
...
fio-3.27
Starting 64 processes
testjob512K1G: Laying out IO file (1 file / 1024MiB)
Jobs: 64 (f=64): [R(64)][100.0%][r=5937MiB/s][r=11.9k IOPS][eta 00m:00s]
testjob512K1G: (groupid=0, jobs=64): err= 0: pid=561243: Tue Oct 25 10:14:28 2022
read: IOPS=11.7k, BW=5865MiB/s (6150MB/s)(57.3GiB/10005msec)
clat (usec): min=617, max=14179, avg=5453.70, stdev=612.95
lat (usec): min=618, max=14179, avg=5453.73, stdev=612.95
clat percentiles (usec):
| 1.00th=[ 4752], 5.00th=[ 4883], 10.00th=[ 5014], 20.00th=[ 5145],
| 30.00th=[ 5211], 40.00th=[ 5276], 50.00th=[ 5407], 60.00th=[ 5473],
| 70.00th=[ 5538], 80.00th=[ 5669], 90.00th=[ 5800], 95.00th=[ 5997],
| 99.00th=[ 8848], 99.50th=[ 9765], 99.90th=[11338], 99.95th=[11994],
| 99.99th=[13435]
bw ( MiB/s): min= 4198, max= 6037, per=99.98%, avg=5864.22, stdev= 6.15, samples=1235
iops : min= 8396, max=12074, avg=11728.44, stdev=12.31, samples=1235
lat (usec) : 750=0.01%
lat (msec) : 2=0.01%, 4=0.02%, 10=99.58%, 20=0.39%
cpu : usr=0.02%, sys=0.23%, ctx=117506, majf=0, minf=9104
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=117365,0,0,0 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=5865MiB/s (6150MB/s), 5865MiB/s-5865MiB/s (6150MB/s-6150MB/s), io=57.3GiB (61.5GB), run=10005-10005msec
Disk stats (read/write):
nvme0n1: ios=465684/0, merge=0/0, ticks=2375008/0, in_queue=2375007, util=98.86%
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