== sanity test 398b: DIO and buffer IO race ============== 18:13:42 (1718403222) /usr/bin/fio 12+0 records in 12+0 records out 12582912 bytes (13 MB) copied, 0.107023 s, 118 MB/s mix direct rw 12M to OST0 by fio with 4 jobs... mix buffer rw 12M to OST0 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.7 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.7 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=14005: Fri Jun 14 18:13:44 2024 read: IOPS=325, BW=1302KiB/s (1333kB/s)(1480KiB/1137msec) clat (usec): min=3, max=32131, avg=1797.33, stdev=2597.74 lat (usec): min=3, max=32132, avg=1797.99, stdev=2597.81 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 16], 40.00th=[ 889], 50.00th=[ 1483], 60.00th=[ 1991], | 70.00th=[ 2442], 80.00th=[ 2933], 90.00th=[ 3523], 95.00th=[ 4883], | 99.00th=[10683], 99.50th=[21890], 99.90th=[32113], 99.95th=[32113], | 99.99th=[32113] bw ( KiB/s): min= 960, max= 1552, per=25.36%, avg=1256.00, stdev=418.61, samples=2 iops : min= 240, max= 388, avg=314.00, stdev=104.65, samples=2 write: IOPS=350, BW=1400KiB/s (1434kB/s)(1592KiB/1137msec) clat (usec): min=90, max=14501, avg=1144.89, stdev=1552.99 lat (usec): min=90, max=14503, avg=1146.28, stdev=1553.08 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 104], 10.00th=[ 119], 20.00th=[ 147], | 30.00th=[ 172], 40.00th=[ 212], 50.00th=[ 717], 60.00th=[ 963], | 70.00th=[ 1303], 80.00th=[ 1926], 90.00th=[ 2868], 95.00th=[ 4178], | 99.00th=[ 7439], 99.50th=[ 9372], 99.90th=[14484], 99.95th=[14484], | 99.99th=[14484] bw ( KiB/s): min= 920, max= 1808, per=26.18%, avg=1364.00, stdev=627.91, samples=2 iops : min= 230, max= 452, avg=341.00, stdev=156.98, samples=2 lat (usec) : 4=0.52%, 10=8.33%, 20=7.16%, 50=1.04%, 100=1.82% lat (usec) : 250=20.57%, 500=3.52%, 750=1.82%, 1000=7.55% lat (msec) : 2=18.62%, 4=22.79%, 10=5.60%, 20=0.39%, 50=0.26% cpu : usr=0.18%, sys=18.75%, ctx=916, majf=0, minf=36 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=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=14006: Fri Jun 14 18:13:44 2024 read: IOPS=306, BW=1226KiB/s (1256kB/s)(1436KiB/1171msec) clat (usec): min=3, max=37516, avg=1904.43, stdev=3071.60 lat (usec): min=3, max=37517, avg=1905.50, stdev=3071.34 clat percentiles (usec): | 1.00th=[ 4], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 1037], 50.00th=[ 1565], 60.00th=[ 1991], | 70.00th=[ 2474], 80.00th=[ 2900], 90.00th=[ 3687], 95.00th=[ 4490], | 99.00th=[11207], 99.50th=[29230], 99.90th=[37487], 99.95th=[37487], | 99.99th=[37487] bw ( KiB/s): min= 728, max= 1472, per=22.21%, avg=1100.00, stdev=526.09, samples=2 iops : min= 182, max= 368, avg=275.00, stdev=131.52, samples=2 write: IOPS=349, BW=1397KiB/s (1431kB/s)(1636KiB/1171msec) clat (usec): min=90, max=28376, avg=1163.46, stdev=1938.27 lat (usec): min=90, max=28377, avg=1164.46, stdev=1938.21 clat percentiles (usec): | 1.00th=[ 95], 5.00th=[ 105], 10.00th=[ 117], 20.00th=[ 141], | 30.00th=[ 167], 40.00th=[ 223], 50.00th=[ 545], 60.00th=[ 881], | 70.00th=[ 1172], 80.00th=[ 1844], 90.00th=[ 3097], 95.00th=[ 4293], | 99.00th=[ 6259], 99.50th=[ 7242], 99.90th=[28443], 99.95th=[28443], | 99.99th=[28443] bw ( KiB/s): min= 816, max= 1592, per=23.11%, avg=1204.00, stdev=548.71, samples=2 iops : min= 204, max= 398, avg=301.00, stdev=137.18, samples=2 lat (usec) : 4=0.52%, 10=7.81%, 20=7.03%, 50=0.13%, 100=2.47% lat (usec) : 250=20.57%, 500=4.17%, 750=2.08%, 1000=8.20% lat (msec) : 2=18.75%, 4=21.22%, 10=6.25%, 20=0.39%, 50=0.39% cpu : usr=0.43%, sys=18.46%, ctx=943, majf=0, minf=33 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=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=14007: Fri Jun 14 18:13:44 2024 read: IOPS=323, BW=1294KiB/s (1325kB/s)(1564KiB/1209msec) clat (usec): min=3, max=17603, avg=1647.13, stdev=1912.54 lat (usec): min=3, max=17604, avg=1647.78, stdev=1912.55 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 1074], 50.00th=[ 1582], 60.00th=[ 1942], | 70.00th=[ 2311], 80.00th=[ 2769], 90.00th=[ 3326], 95.00th=[ 4490], | 99.00th=[ 7504], 99.50th=[17171], 99.90th=[17695], 99.95th=[17695], | 99.99th=[17695] bw ( KiB/s): min= 832, max= 1440, per=22.94%, avg=1136.00, stdev=429.92, samples=2 iops : min= 208, max= 360, avg=284.00, stdev=107.48, samples=2 write: IOPS=311, BW=1247KiB/s (1277kB/s)(1508KiB/1209msec) clat (usec): min=85, max=32601, avg=1451.66, stdev=2317.70 lat (usec): min=86, max=32602, avg=1452.37, stdev=2317.75 clat percentiles (usec): | 1.00th=[ 97], 5.00th=[ 110], 10.00th=[ 123], 20.00th=[ 163], | 30.00th=[ 229], 40.00th=[ 529], 50.00th=[ 898], 60.00th=[ 1156], | 70.00th=[ 1647], 80.00th=[ 2180], 90.00th=[ 3523], 95.00th=[ 4555], | 99.00th=[ 8455], 99.50th=[16188], 99.90th=[32637], 99.95th=[32637], | 99.99th=[32637] bw ( KiB/s): min= 896, max= 1312, per=21.19%, avg=1104.00, stdev=294.16, samples=2 iops : min= 224, max= 328, avg=276.00, stdev=73.54, samples=2 lat (usec) : 4=0.26%, 10=8.20%, 20=8.59%, 50=0.39%, 100=1.30% lat (usec) : 250=15.49%, 500=3.91%, 750=2.47%, 1000=6.64% lat (msec) : 2=21.74%, 4=23.70%, 10=6.77%, 20=0.39%, 50=0.13% cpu : usr=0.41%, sys=17.55%, ctx=949, majf=0, minf=35 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=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=14008: Fri Jun 14 18:13:44 2024 read: IOPS=334, BW=1337KiB/s (1369kB/s)(1508KiB/1128msec) clat (usec): min=3, max=12717, avg=1667.67, stdev=1852.93 lat (usec): min=3, max=12718, avg=1668.51, stdev=1853.06 clat percentiles (usec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 791], 50.00th=[ 1483], 60.00th=[ 1844], | 70.00th=[ 2376], 80.00th=[ 2835], 90.00th=[ 3621], 95.00th=[ 5080], | 99.00th=[ 9372], 99.50th=[10945], 99.90th=[12780], 99.95th=[12780], | 99.99th=[12780] bw ( KiB/s): min= 896, max= 1552, per=24.72%, avg=1224.00, stdev=463.86, samples=2 iops : min= 224, max= 388, avg=306.00, stdev=115.97, samples=2 write: IOPS=346, BW=1387KiB/s (1420kB/s)(1564KiB/1128msec) clat (usec): min=83, max=31230, avg=1224.43, stdev=2109.52 lat (usec): min=83, max=31231, avg=1226.39, stdev=2109.70 clat percentiles (usec): | 1.00th=[ 89], 5.00th=[ 108], 10.00th=[ 122], 20.00th=[ 149], | 30.00th=[ 186], 40.00th=[ 289], 50.00th=[ 775], 60.00th=[ 1057], | 70.00th=[ 1401], 80.00th=[ 1926], 90.00th=[ 2737], 95.00th=[ 3654], | 99.00th=[ 6783], 99.50th=[16450], 99.90th=[31327], 99.95th=[31327], | 99.99th=[31327] bw ( KiB/s): min= 928, max= 1664, per=24.88%, avg=1296.00, stdev=520.43, samples=2 iops : min= 232, max= 416, avg=324.00, stdev=130.11, samples=2 lat (usec) : 4=0.26%, 10=8.46%, 20=7.16%, 50=1.04%, 100=2.21% lat (usec) : 250=17.97%, 500=4.17%, 750=2.73%, 1000=5.60% lat (msec) : 2=22.92%, 4=21.87%, 10=5.08%, 20=0.39%, 50=0.13% cpu : usr=0.44%, sys=16.95%, ctx=956, majf=0, minf=35 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=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4953KiB/s (5072kB/s), 1226KiB/s-1337KiB/s (1256kB/s-1369kB/s), io=5988KiB (6132kB), run=1128-1209msec WRITE: bw=5211KiB/s (5336kB/s), 1247KiB/s-1400KiB/s (1277kB/s-1434kB/s), io=6300KiB (6451kB), run=1128-1209msec rand-rw: (groupid=0, jobs=1): err= 0: pid=14009: Fri Jun 14 18:13:45 2024 read: IOPS=213, BW=855KiB/s (876kB/s)(1480KiB/1731msec) clat (usec): min=559, max=58523, avg=1685.39, stdev=3357.17 lat (usec): min=559, max=58525, avg=1686.01, stdev=3357.24 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 660], 10.00th=[ 701], 20.00th=[ 766], | 30.00th=[ 807], 40.00th=[ 873], 50.00th=[ 963], 60.00th=[ 1045], | 70.00th=[ 1319], 80.00th=[ 1926], 90.00th=[ 3163], 95.00th=[ 4490], | 99.00th=[ 9896], 99.50th=[14746], 99.90th=[58459], 99.95th=[58459], | 99.99th=[58459] bw ( KiB/s): min= 456, max= 1064, per=22.39%, avg=767.33, stdev=304.27, samples=3 iops : min= 114, max= 266, avg=191.67, stdev=76.05, samples=3 write: IOPS=229, BW=920KiB/s (942kB/s)(1592KiB/1731msec) clat (usec): min=1072, max=9091, avg=2758.91, stdev=1515.59 lat (usec): min=1073, max=9091, avg=2759.72, stdev=1515.60 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1450], 10.00th=[ 1598], 20.00th=[ 1729], | 30.00th=[ 1827], 40.00th=[ 1958], 50.00th=[ 2114], 60.00th=[ 2376], | 70.00th=[ 2966], 80.00th=[ 3687], 90.00th=[ 4948], 95.00th=[ 6194], | 99.00th=[ 8029], 99.50th=[ 8586], 99.90th=[ 9110], 99.95th=[ 9110], | 99.99th=[ 9110] bw ( KiB/s): min= 496, max= 1232, per=22.98%, avg=828.67, stdev=373.05, samples=3 iops : min= 124, max= 308, avg=207.00, stdev=93.31, samples=3 lat (usec) : 750=8.46%, 1000=17.45% lat (msec) : 2=35.03%, 4=27.21%, 10=11.46%, 20=0.26%, 100=0.13% cpu : usr=0.46%, sys=5.72%, ctx=818, majf=0, minf=32 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=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=14010: Fri Jun 14 18:13:45 2024 read: IOPS=205, BW=822KiB/s (842kB/s)(1436KiB/1747msec) clat (usec): min=535, max=57724, avg=1610.55, stdev=3255.33 lat (usec): min=536, max=57726, avg=1611.39, stdev=3255.32 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 644], 10.00th=[ 676], 20.00th=[ 734], | 30.00th=[ 766], 40.00th=[ 824], 50.00th=[ 873], 60.00th=[ 971], | 70.00th=[ 1205], 80.00th=[ 1811], 90.00th=[ 3523], 95.00th=[ 4490], | 99.00th=[ 7570], 99.50th=[ 8979], 99.90th=[57934], 99.95th=[57934], | 99.99th=[57934] bw ( KiB/s): min= 440, max= 1248, per=22.02%, avg=754.67, stdev=432.62, samples=3 iops : min= 110, max= 312, avg=188.67, stdev=108.15, samples=3 write: IOPS=234, BW=936KiB/s (959kB/s)(1636KiB/1747msec) clat (usec): min=1022, max=24883, avg=2837.56, stdev=2046.43 lat (usec): min=1022, max=24884, avg=2838.35, stdev=2046.50 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1319], 10.00th=[ 1516], 20.00th=[ 1680], | 30.00th=[ 1827], 40.00th=[ 1958], 50.00th=[ 2089], 60.00th=[ 2376], | 70.00th=[ 2966], 80.00th=[ 3752], 90.00th=[ 5014], 95.00th=[ 5932], | 99.00th=[10421], 99.50th=[12387], 99.90th=[24773], 99.95th=[24773], | 99.99th=[24773] bw ( KiB/s): min= 488, max= 1176, per=22.56%, avg=813.33, stdev=345.52, samples=3 iops : min= 122, max= 294, avg=203.33, stdev=86.38, samples=3 lat (usec) : 750=12.11%, 1000=16.41% lat (msec) : 2=33.07%, 4=24.74%, 10=12.89%, 20=0.52%, 50=0.13% lat (msec) : 100=0.13% cpu : usr=0.46%, sys=5.44%, ctx=816, majf=0, minf=34 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=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=14011: Fri Jun 14 18:13:45 2024 read: IOPS=230, BW=921KiB/s (943kB/s)(1564KiB/1698msec) clat (usec): min=536, max=10135, avg=1518.30, stdev=1428.35 lat (usec): min=537, max=10137, avg=1518.95, stdev=1428.39 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 627], 10.00th=[ 676], 20.00th=[ 725], | 30.00th=[ 775], 40.00th=[ 824], 50.00th=[ 914], 60.00th=[ 988], | 70.00th=[ 1303], 80.00th=[ 1975], 90.00th=[ 3687], 95.00th=[ 4621], | 99.00th=[ 7177], 99.50th=[ 8848], 99.90th=[10159], 99.95th=[10159], | 99.99th=[10159] bw ( KiB/s): min= 432, max= 1232, per=24.04%, avg=824.00, stdev=400.24, samples=3 iops : min= 108, max= 308, avg=206.00, stdev=100.06, samples=3 write: IOPS=222, BW=888KiB/s (909kB/s)(1508KiB/1698msec) clat (usec): min=1136, max=56796, avg=2908.39, stdev=3264.69 lat (usec): min=1137, max=56798, avg=2909.12, stdev=3264.76 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1319], 10.00th=[ 1549], 20.00th=[ 1696], | 30.00th=[ 1795], 40.00th=[ 1909], 50.00th=[ 2114], 60.00th=[ 2409], | 70.00th=[ 2835], 80.00th=[ 3556], 90.00th=[ 4948], 95.00th=[ 6718], | 99.00th=[ 9765], 99.50th=[15008], 99.90th=[56886], 99.95th=[56886], | 99.99th=[56886] bw ( KiB/s): min= 504, max= 1272, per=22.63%, avg=816.00, stdev=403.74, samples=3 iops : min= 126, max= 318, avg=204.00, stdev=100.94, samples=3 lat (usec) : 750=12.63%, 1000=18.49% lat (msec) : 2=31.64%, 4=25.26%, 10=11.46%, 20=0.39%, 100=0.13% cpu : usr=0.29%, sys=6.07%, ctx=820, majf=0, minf=34 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=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=14012: Fri Jun 14 18:13:45 2024 read: IOPS=218, BW=875KiB/s (896kB/s)(1508KiB/1723msec) clat (usec): min=507, max=7164, avg=1524.85, stdev=1269.19 lat (usec): min=508, max=7164, avg=1525.54, stdev=1269.22 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 627], 10.00th=[ 685], 20.00th=[ 734], | 30.00th=[ 783], 40.00th=[ 840], 50.00th=[ 930], 60.00th=[ 1090], | 70.00th=[ 1467], 80.00th=[ 2008], 90.00th=[ 3720], 95.00th=[ 4359], | 99.00th=[ 6128], 99.50th=[ 7046], 99.90th=[ 7177], 99.95th=[ 7177], | 99.99th=[ 7177] bw ( KiB/s): min= 472, max= 1040, per=22.18%, avg=760.00, stdev=284.08, samples=3 iops : min= 118, max= 260, avg=190.00, stdev=71.02, samples=3 write: IOPS=226, BW=908KiB/s (930kB/s)(1564KiB/1723msec) clat (usec): min=1125, max=38738, avg=2917.63, stdev=2582.51 lat (usec): min=1126, max=38740, avg=2918.52, stdev=2582.66 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1434], 10.00th=[ 1582], 20.00th=[ 1745], | 30.00th=[ 1827], 40.00th=[ 1958], 50.00th=[ 2147], 60.00th=[ 2442], | 70.00th=[ 2966], 80.00th=[ 3654], 90.00th=[ 4948], 95.00th=[ 6456], | 99.00th=[12780], 99.50th=[17957], 99.90th=[38536], 99.95th=[38536], | 99.99th=[38536] bw ( KiB/s): min= 536, max= 1240, per=22.92%, avg=826.67, stdev=367.68, samples=3 iops : min= 134, max= 310, avg=206.67, stdev=91.92, samples=3 lat (usec) : 750=11.46%, 1000=15.62% lat (msec) : 2=33.46%, 4=27.73%, 10=11.07%, 20=0.52%, 50=0.13% cpu : usr=0.41%, sys=5.63%, ctx=819, majf=0, minf=32 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=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3428KiB/s (3510kB/s), 822KiB/s-921KiB/s (842kB/s-943kB/s), io=5988KiB (6132kB), run=1698-1747msec WRITE: bw=3606KiB/s (3693kB/s), 888KiB/s-936KiB/s (909kB/s-959kB/s), io=6300KiB (6451kB), run=1698-1747msec