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  1. #1

    Is it acceptable performance of NVMe?

    I have bought a server with NVMe. I tested its speed as follows and confused about its performance.

    Is it ok?


    [root@server ~]# hdparm -tT /dev/nvme0n1p1
    /dev/nvme0n1p1:
    Timing cached reads: 19620 MB in 1.93 seconds = 10144.70 MB/sec
    Timing buffered disk reads: 4096 MB in 1.51 seconds = 2712.62 MB/sec


    [root@server ~]# hdparm -tT /dev/nvme1n1

    /dev/nvme1n1:
    Timing cached reads: 18822 MB in 1.94 seconds = 9718.28 MB/sec
    Timing buffered disk reads: 8010 MB in 3.00 seconds = 2670.00 MB/sec

    Code:
    [root@server fio-2.0.9]# ./fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=                                                                                        test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixre                                                                                        ad=75
    : (g=0): rw=randrw, bs=4K-4K/4K-4K, ioengine=libaio, iodepth=64
    fio: option <$> outside of [] job section
    fio-2.0.9
    Starting 1 process
    Jobs: 1 (f=1): [w] [100.0% done] [0K/225.4M /s] [0 /57.7K iops] [eta 00m:00s]
    : (groupid=0, jobs=1): err= 0: pid=11631: Fri Jan 12 03:42:40 2018
      write: io=4096.0MB, bw=230938KB/s, iops=57734 , runt= 18162msec
      cpu          : usr=11.49%, sys=88.46%, ctx=1842, majf=0, minf=436
      IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
         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=0.1%, >=64=0.0%
         issued    : total=r=0/w=1048576/d=0, short=r=0/w=0/d=0
    
    Run status group 0 (all jobs):
      WRITE: io=4096.0MB, aggrb=230938KB/s, minb=230938KB/s, maxb=230938KB/s, mint=18162msec, maxt=18162msec
    
    Disk stats (read/write):
      nvme0n1: ios=0/1034200, merge=0/3, ticks=0/18059, in_queue=17493, util=92.95%

  2. #2
    Join Date
    Mar 2003
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    That is definitely a good speed!

    Congrats!

    Specially 4 U
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  3. #3
    What are you using for SSD? Samsung 960?
    SolaDrive - Enterprise Managed Server Solutions
    Specializing in Managed NVMe VPS & Dedicated Servers in US & UK
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  4. #4
    Join Date
    Sep 2013
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    Canada
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    Between 2G-3G/s is pretty much on spot for non raid 0/10 nvme setup
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  5. #5
    Quote Originally Posted by Julien@Hostabulous View Post
    Between 2G-3G/s is pretty much on spot for non raid 0/10 nvme setup
    Yes its non-raid setup

  6. #6
    Join Date
    Dec 2007
    Location
    Indiana, USA
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    19,178
    Quote Originally Posted by noderise View Post
    Yes its non-raid setup
    Hope it doesn't die on you.
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  7. #7
    Quote Originally Posted by SolaDrive - John View Post
    What are you using for SSD? Samsung 960?
    Its SAMSUNG MZQLW960HMJP-00003

  8. #8
    Join Date
    Apr 2017
    Location
    Dallas, TX
    Posts
    16
    Looks like normal super slow NVMe speeds... (in case it is not detected, this is entirely sarcasm).

    In all seriousness, it looks about right for what you have being non RAID and all. You should look into RAID 1 or 10 for redundancy but I'm not your mom, do what you will.

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