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Random Read/Writes – SYNC mode

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Mar 16th, 2020
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  1. 4K block size – 50% Reads/50% Writes
  2. fio --name=randrw --rw=randrw --direct=0 --ioengine=sync --bs=4k --numjobs=1 --size=1G --runtime=600
  3.  
  4. randrw: (groupid=0, jobs=1): err= 0: pid=10016: Mon Mar 16 08:10:09 2020
  5.   read : io=522756KB, bw=309323KB/s, iops=77330, runt=  1690msec
  6.     clat (usec): min=1, max=100063, avg= 4.22, stdev=276.83
  7.      lat (usec): min=1, max=100064, avg= 4.41, stdev=276.83
  8.     clat percentiles (usec):
  9.      |  1.00th=[    2],  5.00th=[    2], 10.00th=[    2], 20.00th=[    2],
  10.      | 30.00th=[    2], 40.00th=[    3], 50.00th=[    3], 60.00th=[    3],
  11.      | 70.00th=[    3], 80.00th=[    3], 90.00th=[    3], 95.00th=[    4],
  12.      | 99.00th=[   24], 99.50th=[   26], 99.90th=[   57], 99.95th=[   59],
  13.      | 99.99th=[   81]
  14.   write: io=525820KB, bw=311136KB/s, iops=77784, runt=  1690msec
  15.     clat (usec): min=4, max=295, avg= 6.44, stdev= 5.03
  16.      lat (usec): min=4, max=296, avg= 6.64, stdev= 5.03
  17.     clat percentiles (usec):
  18.      |  1.00th=[    4],  5.00th=[    5], 10.00th=[    5], 20.00th=[    5],
  19.      | 30.00th=[    5], 40.00th=[    5], 50.00th=[    6], 60.00th=[    6],
  20.      | 70.00th=[    6], 80.00th=[    6], 90.00th=[    7], 95.00th=[    8],
  21.      | 99.00th=[   28], 99.50th=[   32], 99.90th=[   63], 99.95th=[   68],
  22.      | 99.99th=[   84]
  23.     lat (usec) : 2=0.12%, 4=45.24%, 10=51.31%, 20=0.45%, 50=2.57%
  24.     lat (usec) : 100=0.29%, 250=0.01%, 500=0.01%, 1000=0.01%
  25.     lat (msec) : 250=0.01%
  26.   cpu          : usr=8.29%, sys=84.01%, ctx=1379, majf=0, minf=7
  27.   IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
  28.      submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  29.      complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  30.      issued    : total=r=130689/w=131455/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
  31.      latency   : target=0, window=0, percentile=100.00%, depth=1
  32.  
  33. Run status group 0 (all jobs):
  34.    READ: io=522756KB, aggrb=309323KB/s, minb=309323KB/s, maxb=309323KB/s, mint=1690msec, maxt=1690msec
  35.   WRITE: io=525820KB, aggrb=311136KB/s, minb=311136KB/s, maxb=311136KB/s, mint=1690msec, maxt=1690msec
  36.  
  37. ----------------------------------------------------------------------------------------------------
  38.  
  39. 8K block size – 50% Reads/50% Writes
  40. fio --name=randrw --rw=randrw --direct=0 --ioengine=sync --bs=8k --numjobs=1 --size=1G --runtime=600
  41.  
  42. randrw: (groupid=0, jobs=1): err= 0: pid=10739: Mon Mar 16 08:10:27 2020
  43.   read : io=521432KB, bw=400485KB/s, iops=50060, runt=  1302msec
  44.     clat (usec): min=2, max=4493, avg= 6.90, stdev=26.99
  45.      lat (usec): min=2, max=4494, avg= 7.09, stdev=27.00
  46.     clat percentiles (usec):
  47.      |  1.00th=[    2],  5.00th=[    2], 10.00th=[    3], 20.00th=[    3],
  48.      | 30.00th=[    3], 40.00th=[    3], 50.00th=[    3], 60.00th=[    4],
  49.      | 70.00th=[    4], 80.00th=[    4], 90.00th=[   22], 95.00th=[   24],
  50.      | 99.00th=[   48], 99.50th=[   56], 99.90th=[   78], 99.95th=[  109],
  51.      | 99.99th=[  868]
  52.   write: io=527144KB, bw=404873KB/s, iops=50609, runt=  1302msec
  53.     clat (usec): min=4, max=1052, avg=10.50, stdev=12.41
  54.      lat (usec): min=4, max=1052, avg=10.73, stdev=12.41
  55.     clat percentiles (usec):
  56.      |  1.00th=[    5],  5.00th=[    6], 10.00th=[    6], 20.00th=[    6],
  57.      | 30.00th=[    6], 40.00th=[    7], 50.00th=[    7], 60.00th=[    7],
  58.      | 70.00th=[    8], 80.00th=[    9], 90.00th=[   26], 95.00th=[   29],
  59.      | 99.00th=[   56], 99.50th=[   62], 99.90th=[   89], 99.95th=[  108],
  60.      | 99.99th=[  350]
  61.     lat (usec) : 4=24.97%, 10=59.53%, 20=1.68%, 50=12.68%, 100=1.07%
  62.     lat (usec) : 250=0.05%, 500=0.01%, 1000=0.01%
  63.     lat (msec) : 2=0.01%, 4=0.01%, 10=0.01%
  64.   cpu          : usr=10.76%, sys=84.32%, ctx=1916, majf=0, minf=24
  65.   IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
  66.      submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  67.      complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  68.      issued    : total=r=65179/w=65893/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
  69.      latency   : target=0, window=0, percentile=100.00%, depth=1
  70.  
  71. Run status group 0 (all jobs):
  72.    READ: io=521432KB, aggrb=400485KB/s, minb=400485KB/s, maxb=400485KB/s, mint=1302msec, maxt=1302msec
  73.   WRITE: io=527144KB, aggrb=404872KB/s, minb=404872KB/s, maxb=404872KB/s, mint=1302msec, maxt=1302msec
  74.  
  75.  
  76. ----------------------------------------------------------------------------------------------------
  77.  
  78. 16K block size – 50% Reads/50% Writes
  79. fio --name=randrw --rw=randrw --direct=0 --ioengine=sync --bs=16k --numjobs=1 --size=1G --runtime=600
  80.  
  81. randrw: (groupid=0, jobs=1): err= 0: pid=11290: Mon Mar 16 08:10:44 2020
  82.   read : io=523072KB, bw=564873KB/s, iops=35304, runt=   926msec
  83.     clat (usec): min=2, max=549, avg=10.63, stdev=13.09
  84.      lat (usec): min=2, max=549, avg=10.83, stdev=13.09
  85.     clat percentiles (usec):
  86.      |  1.00th=[    3],  5.00th=[    3], 10.00th=[    4], 20.00th=[    4],
  87.      | 30.00th=[    4], 40.00th=[    4], 50.00th=[    5], 60.00th=[    5],
  88.      | 70.00th=[    6], 80.00th=[   22], 90.00th=[   25], 95.00th=[   29],
  89.      | 99.00th=[   53], 99.50th=[   60], 99.90th=[   80], 99.95th=[   93],
  90.      | 99.99th=[  402]
  91.   write: io=525504KB, bw=567499KB/s, iops=35468, runt=   926msec
  92.     clat (usec): min=4, max=619, avg=14.93, stdev=13.89
  93.      lat (usec): min=5, max=619, avg=15.21, stdev=13.90
  94.     clat percentiles (usec):
  95.      |  1.00th=[    6],  5.00th=[    7], 10.00th=[    7], 20.00th=[    7],
  96.      | 30.00th=[    8], 40.00th=[    8], 50.00th=[    8], 60.00th=[    9],
  97.      | 70.00th=[   12], 80.00th=[   27], 90.00th=[   31], 95.00th=[   36],
  98.      | 99.00th=[   61], 99.50th=[   68], 99.90th=[   89], 99.95th=[  102],
  99.      | 99.99th=[  430]
  100.     lat (usec) : 4=4.29%, 10=63.29%, 20=5.39%, 50=25.28%, 100=1.71%
  101.     lat (usec) : 250=0.02%, 500=0.03%, 750=0.01%
  102.   cpu          : usr=6.81%, sys=88.65%, ctx=1606, majf=0, minf=9
  103.   IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
  104.      submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  105.      complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  106.      issued    : total=r=32692/w=32844/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
  107.      latency   : target=0, window=0, percentile=100.00%, depth=1
  108.  
  109. Run status group 0 (all jobs):
  110.    READ: io=523072KB, aggrb=564872KB/s, minb=564872KB/s, maxb=564872KB/s, mint=926msec, maxt=926msec
  111.   WRITE: io=525504KB, aggrb=567498KB/s, minb=567498KB/s, maxb=567498KB/s, mint=926msec, maxt=926msec
  112.  
  113. ----------------------------------------------------------------------------------------------------
  114.  
  115. 32K block size – 50% Reads/50% Writes
  116. fio --name=randrw --rw=randrw --direct=0 --ioengine=sync --bs=32k --numjobs=1 --size=1G --runtime=600
  117.  
  118. randrw: (groupid=0, jobs=1): err= 0: pid=11755: Mon Mar 16 08:10:55 2020
  119.   read : io=523456KB, bw=774343KB/s, iops=24198, runt=   676msec
  120.     clat (usec): min=3, max=654, avg=16.43, stdev=14.14
  121.      lat (usec): min=3, max=654, avg=16.63, stdev=14.14
  122.     clat percentiles (usec):
  123.      |  1.00th=[    3],  5.00th=[    5], 10.00th=[    5], 20.00th=[    6],
  124.      | 30.00th=[    6], 40.00th=[    7], 50.00th=[    8], 60.00th=[   22],
  125.      | 70.00th=[   24], 80.00th=[   25], 90.00th=[   28], 95.00th=[   35],
  126.      | 99.00th=[   62], 99.50th=[   71], 99.90th=[   95], 99.95th=[  101],
  127.      | 99.99th=[  378]
  128.   write: io=525120KB, bw=776805KB/s, iops=24275, runt=   676msec
  129.     clat (usec): min=6, max=1834, avg=22.03, stdev=20.87
  130.      lat (usec): min=6, max=1835, avg=22.42, stdev=20.88
  131.     clat percentiles (usec):
  132.      |  1.00th=[    7],  5.00th=[    9], 10.00th=[    9], 20.00th=[   10],
  133.      | 30.00th=[   10], 40.00th=[   11], 50.00th=[   14], 60.00th=[   28],
  134.      | 70.00th=[   29], 80.00th=[   31], 90.00th=[   34], 95.00th=[   48],
  135.      | 99.00th=[   71], 99.50th=[   78], 99.90th=[  104], 99.95th=[  127],
  136.      | 99.99th=[  572]
  137.     lat (usec) : 4=0.57%, 10=33.15%, 20=17.88%, 50=44.77%, 100=3.52%
  138.     lat (usec) : 250=0.10%, 500=0.01%, 750=0.01%
  139.     lat (msec) : 2=0.01%
  140.   cpu          : usr=4.15%, sys=91.11%, ctx=1303, majf=0, minf=7
  141.   IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
  142.      submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  143.      complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  144.      issued    : total=r=16358/w=16410/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
  145.      latency   : target=0, window=0, percentile=100.00%, depth=1
  146.  
  147. Run status group 0 (all jobs):
  148.    READ: io=523456KB, aggrb=774343KB/s, minb=774343KB/s, maxb=774343KB/s, mint=676msec, maxt=676msec
  149.   WRITE: io=525120KB, aggrb=776804KB/s, minb=776804KB/s, maxb=776804KB/s, mint=676msec, maxt=676msec
  150.  
  151. ----------------------------------------------------------------------------------------------------
  152.  
  153. 64K block size – 50% Reads/50% Writes
  154. fio --name=randrw --rw=randrw --direct=0 --ioengine=sync --bs=64k --numjobs=1 --size=1G --runtime=600
  155.  
  156. randrw: (groupid=0, jobs=1): err= 0: pid=12280: Mon Mar 16 08:11:05 2020
  157.   read : io=528384KB, bw=1178.9MB/s, iops=18849, runt=   438msec
  158.     clat (usec): min=3, max=8002, avg=22.73, stdev=90.42
  159.      lat (usec): min=3, max=8002, avg=22.95, stdev=90.42
  160.     clat percentiles (usec):
  161.      |  1.00th=[    5],  5.00th=[    6], 10.00th=[    7], 20.00th=[    9],
  162.      | 30.00th=[   10], 40.00th=[   21], 50.00th=[   23], 60.00th=[   24],
  163.      | 70.00th=[   25], 80.00th=[   27], 90.00th=[   32], 95.00th=[   42],
  164.      | 99.00th=[   68], 99.50th=[   76], 99.90th=[  101], 99.95th=[  243],
  165.      | 99.99th=[ 8032]
  166.   write: io=520192KB, bw=1159.9MB/s, iops=18557, runt=   438msec
  167.     clat (usec): min=7, max=1493, avg=27.69, stdev=23.31
  168.      lat (usec): min=7, max=1493, avg=28.27, stdev=23.33
  169.     clat percentiles (usec):
  170.      |  1.00th=[    9],  5.00th=[   11], 10.00th=[   12], 20.00th=[   13],
  171.      | 30.00th=[   21], 40.00th=[   27], 50.00th=[   28], 60.00th=[   30],
  172.      | 70.00th=[   31], 80.00th=[   33], 90.00th=[   40], 95.00th=[   51],
  173.      | 99.00th=[   76], 99.50th=[   85], 99.90th=[  111], 99.95th=[  247],
  174.      | 99.99th=[ 1496]
  175.     lat (usec) : 4=0.07%, 10=14.61%, 20=16.95%, 50=63.81%, 100=4.40%
  176.     lat (usec) : 250=0.11%, 500=0.02%, 750=0.01%
  177.     lat (msec) : 2=0.01%, 10=0.01%
  178.   cpu          : usr=0.00%, sys=93.59%, ctx=652, majf=0, minf=8
  179.   IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
  180.      submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  181.      complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  182.      issued    : total=r=8256/w=8128/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
  183.      latency   : target=0, window=0, percentile=100.00%, depth=1
  184.  
  185. Run status group 0 (all jobs):
  186.    READ: io=528384KB, aggrb=1178.9MB/s, minb=1178.9MB/s, maxb=1178.9MB/s, mint=438msec, maxt=438msec
  187.   WRITE: io=520192KB, aggrb=1159.9MB/s, minb=1159.9MB/s, maxb=1159.9MB/s, mint=438msec, maxt=438msec
  188.  
  189.  
  190. ----------------------------------------------------------------------------------------------------
  191.  
  192. 128K block size – 50% Reads/50% Writes
  193. fio --name=randrw --rw=randrw --direct=0 --ioengine=sync --bs=128k --numjobs=1 --size=1G --runtime=600
  194.  
  195. randrw: (groupid=0, jobs=1): err= 0: pid=12910: Mon Mar 16 08:11:20 2020
  196.   read : io=523648KB, bw=2053.8MB/s, iops=16429, runt=   249msec
  197.     clat (usec): min=12, max=100, avg=30.47, stdev= 8.13
  198.      lat (usec): min=12, max=100, avg=30.66, stdev= 8.14
  199.     clat percentiles (usec):
  200.      |  1.00th=[   20],  5.00th=[   22], 10.00th=[   24], 20.00th=[   25],
  201.      | 30.00th=[   26], 40.00th=[   28], 50.00th=[   29], 60.00th=[   30],
  202.      | 70.00th=[   31], 80.00th=[   33], 90.00th=[   37], 95.00th=[   50],
  203.      | 99.00th=[   61], 99.50th=[   64], 99.90th=[   78], 99.95th=[   81],
  204.      | 99.99th=[  100]
  205.   write: io=524928KB, bw=2058.8MB/s, iops=16469, runt=   249msec
  206.     clat (usec): min=17, max=7074, avg=26.67, stdev=110.46
  207.      lat (usec): min=17, max=7075, avg=27.86, stdev=110.47
  208.     clat percentiles (usec):
  209.      |  1.00th=[   18],  5.00th=[   19], 10.00th=[   20], 20.00th=[   21],
  210.      | 30.00th=[   22], 40.00th=[   22], 50.00th=[   23], 60.00th=[   24],
  211.      | 70.00th=[   24], 80.00th=[   25], 90.00th=[   28], 95.00th=[   43],
  212.      | 99.00th=[   59], 99.50th=[   65], 99.90th=[  141], 99.95th=[  199],
  213.      | 99.99th=[ 7072]
  214.     lat (usec) : 20=3.21%, 50=92.48%, 100=4.21%, 250=0.09%
  215.     lat (msec) : 10=0.01%
  216.   cpu          : usr=0.00%, sys=94.35%, ctx=255, majf=0, minf=8
  217.   IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
  218.      submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  219.      complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
  220.      issued    : total=r=4091/w=4101/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
  221.      latency   : target=0, window=0, percentile=100.00%, depth=1
  222.  
  223. Run status group 0 (all jobs):
  224.    READ: io=523648KB, aggrb=2053.8MB/s, minb=2053.8MB/s, maxb=2053.8MB/s, mint=249msec, maxt=249msec
  225.   WRITE: io=524928KB, aggrb=2058.8MB/s, minb=2058.8MB/s, maxb=2058.8MB/s, mint=249msec, maxt=249msec
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