== sanity test 398b: DIO and buffer IO race ============== 21:11:51 (1787101911) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.04497 s, 16.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 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-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145766: Tue Aug 18 21:13:01 2026 read: IOPS=25, BW=101KiB/s (104kB/s)(5992KiB/59173msec) clat (usec): min=30, max=728364, avg=20458.34, stdev=22882.26 lat (usec): min=30, max=728364, avg=20459.40, stdev=22882.26 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 108], 10.00th=[ 7832], 20.00th=[ 10814], | 30.00th=[ 12780], 40.00th=[ 15139], 50.00th=[ 17433], 60.00th=[ 20055], | 70.00th=[ 23462], 80.00th=[ 27919], 90.00th=[ 34866], 95.00th=[ 43779], | 99.00th=[ 66323], 99.50th=[ 99091], 99.90th=[139461], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 13, max= 232, per=24.85%, avg=100.40, stdev=30.26, samples=117 iops : min= 3, max= 58, avg=24.62, stdev= 7.58, samples=117 write: IOPS=26, BW=106KiB/s (109kB/s)(6296KiB/59173msec); 0 zone resets clat (usec): min=835, max=136564, avg=17973.17, stdev=15917.98 lat (usec): min=836, max=136565, avg=17979.28, stdev=15928.74 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1516], 10.00th=[ 2245], 20.00th=[ 3589], | 30.00th=[ 5997], 40.00th=[ 11207], 50.00th=[ 14484], 60.00th=[ 17957], | 70.00th=[ 22938], 80.00th=[ 29754], 90.00th=[ 39584], 95.00th=[ 47973], | 99.00th=[ 71828], 99.50th=[ 81265], 99.90th=[108528], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 39, max= 175, per=25.04%, avg=105.91, stdev=29.59, samples=116 iops : min= 9, max= 43, avg=26.00, stdev= 7.37, samples=116 lat (usec) : 50=0.29%, 100=1.86%, 250=1.17%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.26% lat (msec) : 2=3.91%, 4=7.42%, 10=12.27%, 20=34.60%, 50=34.38% lat (msec) : 100=3.48%, 250=0.26%, 750=0.03% cpu : usr=0.11%, sys=16.38%, ctx=7848, majf=0, minf=18 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=1498,1574,0,0 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=145767: Tue Aug 18 21:13:01 2026 read: IOPS=24, BW=99.0KiB/s (102kB/s)(5940KiB/59423msec) clat (usec): min=25, max=100935, avg=19437.73, stdev=12049.66 lat (usec): min=25, max=100936, avg=19439.93, stdev=12050.66 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 235], 10.00th=[ 8717], 20.00th=[ 10814], | 30.00th=[ 12649], 40.00th=[ 14877], 50.00th=[ 16909], 60.00th=[ 19530], | 70.00th=[ 22676], 80.00th=[ 27132], 90.00th=[ 33817], 95.00th=[ 39584], | 99.00th=[ 58459], 99.50th=[ 73925], 99.90th=[ 96994], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 6, max= 176, per=24.60%, avg=99.36, stdev=32.09, samples=118 iops : min= 1, max= 44, avg=24.36, stdev= 8.12, samples=118 write: IOPS=26, BW=107KiB/s (109kB/s)(6348KiB/59423msec); 0 zone resets clat (usec): min=784, max=703555, avg=19109.74, stdev=24796.39 lat (usec): min=784, max=703557, avg=19111.05, stdev=24796.42 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1549], 10.00th=[ 2147], 20.00th=[ 3294], | 30.00th=[ 5866], 40.00th=[ 10552], 50.00th=[ 15008], 60.00th=[ 19006], | 70.00th=[ 23725], 80.00th=[ 30540], 90.00th=[ 40109], 95.00th=[ 50594], | 99.00th=[ 83362], 99.50th=[ 95945], 99.90th=[175113], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 13, max= 296, per=25.07%, avg=106.05, stdev=36.34, samples=118 iops : min= 3, max= 74, avg=26.04, stdev= 9.08, samples=118 lat (usec) : 50=0.36%, 100=1.30%, 250=0.81%, 500=0.16%, 750=0.10% lat (usec) : 1000=0.52% lat (msec) : 2=4.04%, 4=7.94%, 10=11.91%, 20=34.83%, 50=34.24% lat (msec) : 100=3.52%, 250=0.23%, 750=0.03% cpu : usr=0.13%, sys=16.35%, ctx=7727, majf=0, minf=18 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=1485,1587,0,0 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=145768: Tue Aug 18 21:13:01 2026 read: IOPS=25, BW=102KiB/s (105kB/s)(6028KiB/59043msec) clat (usec): min=32, max=191271, avg=19836.98, stdev=13477.02 lat (usec): min=33, max=191272, avg=19839.27, stdev=13477.76 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 110], 10.00th=[ 7963], 20.00th=[ 10945], | 30.00th=[ 12911], 40.00th=[ 14877], 50.00th=[ 17171], 60.00th=[ 20317], | 70.00th=[ 23725], 80.00th=[ 28181], 90.00th=[ 35390], 95.00th=[ 40633], | 99.00th=[ 57410], 99.50th=[ 77071], 99.90th=[158335], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 13, max= 174, per=25.19%, avg=101.76, stdev=30.70, samples=117 iops : min= 3, max= 43, avg=24.97, stdev= 7.66, samples=117 write: IOPS=26, BW=106KiB/s (109kB/s)(6260KiB/59043msec); 0 zone resets clat (usec): min=796, max=720064, avg=18486.79, stdev=24893.04 lat (usec): min=797, max=720064, avg=18489.35, stdev=24892.91 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1532], 10.00th=[ 2245], 20.00th=[ 3425], | 30.00th=[ 5997], 40.00th=[ 10159], 50.00th=[ 13960], 60.00th=[ 17957], | 70.00th=[ 22676], 80.00th=[ 28967], 90.00th=[ 39060], 95.00th=[ 49546], | 99.00th=[ 72877], 99.50th=[107480], 99.90th=[179307], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 20, max= 184, per=24.95%, avg=105.53, stdev=30.50, samples=117 iops : min= 5, max= 46, avg=25.91, stdev= 7.66, samples=117 lat (usec) : 50=0.49%, 100=1.69%, 250=1.17%, 500=0.03%, 1000=0.42% lat (msec) : 2=3.74%, 4=7.65%, 10=13.25%, 20=33.30%, 50=34.73% lat (msec) : 100=3.12%, 250=0.36%, 750=0.03% cpu : usr=0.11%, sys=16.25%, ctx=7544, majf=0, minf=17 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=1507,1565,0,0 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=145769: Tue Aug 18 21:13:01 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(6052KiB/58256msec) clat (usec): min=35, max=742316, avg=19552.38, stdev=22097.21 lat (usec): min=36, max=742317, avg=19553.47, stdev=22097.18 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 108], 10.00th=[ 7832], 20.00th=[ 10552], | 30.00th=[ 12780], 40.00th=[ 14615], 50.00th=[ 17171], 60.00th=[ 19792], | 70.00th=[ 22938], 80.00th=[ 26870], 90.00th=[ 33162], 95.00th=[ 39060], | 99.00th=[ 61080], 99.50th=[ 72877], 99.90th=[119014], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 20, max= 207, per=25.66%, avg=103.68, stdev=30.46, samples=115 iops : min= 5, max= 51, avg=25.44, stdev= 7.66, samples=115 write: IOPS=26, BW=107KiB/s (110kB/s)(6236KiB/58256msec); 0 zone resets clat (usec): min=747, max=116789, avg=18244.18, stdev=16356.91 lat (usec): min=748, max=116790, avg=18246.08, stdev=16356.53 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1598], 10.00th=[ 2278], 20.00th=[ 3425], | 30.00th=[ 5276], 40.00th=[ 10552], 50.00th=[ 14615], 60.00th=[ 19006], | 70.00th=[ 23462], 80.00th=[ 31065], 90.00th=[ 39584], 95.00th=[ 48497], | 99.00th=[ 68682], 99.50th=[ 90702], 99.90th=[110625], 99.95th=[116917], | 99.99th=[116917] bw ( KiB/s): min= 27, max= 191, per=25.25%, avg=106.81, stdev=34.54, samples=115 iops : min= 6, max= 47, avg=26.22, stdev= 8.62, samples=115 lat (usec) : 50=0.52%, 100=1.76%, 250=1.04%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.36% lat (msec) : 2=3.58%, 4=8.04%, 10=12.92%, 20=33.11%, 50=35.29% lat (msec) : 100=3.09%, 250=0.13%, 750=0.03% cpu : usr=0.14%, sys=16.26%, ctx=7567, majf=0, minf=17 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=1513,1559,0,0 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=404KiB/s (414kB/s), 99.0KiB/s-104KiB/s (102kB/s-106kB/s), io=23.4MiB (24.6MB), run=58256-59423msec WRITE: bw=423KiB/s (433kB/s), 106KiB/s-107KiB/s (109kB/s-110kB/s), io=24.6MiB (25.7MB), run=58256-59423msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145771: Tue Aug 18 21:13:47 2026 read: IOPS=14, BW=56.7KiB/s (58.1kB/s)(5992KiB/105621msec) clat (msec): min=3, max=751, avg=17.58, stdev=24.64 lat (msec): min=3, max=751, avg=17.58, stdev=24.64 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 15], | 70.00th=[ 17], 80.00th=[ 22], 90.00th=[ 34], 95.00th=[ 45], | 99.00th=[ 84], 99.50th=[ 115], 99.90th=[ 161], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 144, per=25.22%, avg=57.00, stdev=32.30, samples=208 iops : min= 1, max= 36, avg=13.85, stdev= 8.12, samples=208 write: IOPS=14, BW=59.6KiB/s (61.0kB/s)(6296KiB/105621msec); 0 zone resets clat (msec): min=17, max=284, avg=50.30, stdev=25.83 lat (msec): min=17, max=284, avg=50.30, stdev=25.83 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 31], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 44], 60.00th=[ 50], | 70.00th=[ 58], 80.00th=[ 68], 90.00th=[ 84], 95.00th=[ 101], | 99.00th=[ 131], 99.50th=[ 165], 99.90th=[ 201], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 128, per=25.13%, avg=59.56, stdev=26.34, samples=209 iops : min= 1, max= 32, avg=14.49, stdev= 6.65, samples=209 lat (msec) : 4=0.03%, 10=17.81%, 20=20.41%, 50=39.94%, 100=18.98% lat (msec) : 250=2.77%, 500=0.03%, 1000=0.03% cpu : usr=0.09%, sys=4.73%, ctx=5774, majf=0, minf=12 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=1498,1574,0,0 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=145772: Tue Aug 18 21:13:47 2026 read: IOPS=14, BW=56.2KiB/s (57.6kB/s)(5940KiB/105673msec) clat (msec): min=3, max=747, avg=17.68, stdev=24.90 lat (msec): min=3, max=747, avg=17.69, stdev=24.90 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 35], 95.00th=[ 47], | 99.00th=[ 75], 99.50th=[ 96], 99.90th=[ 224], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 160, per=25.23%, avg=57.01, stdev=33.71, samples=206 iops : min= 1, max= 40, avg=13.86, stdev= 8.49, samples=206 write: IOPS=15, BW=60.1KiB/s (61.5kB/s)(6348KiB/105673msec); 0 zone resets clat (msec): min=15, max=217, avg=49.94, stdev=24.76 lat (msec): min=15, max=217, avg=49.95, stdev=24.76 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 31], | 30.00th=[ 34], 40.00th=[ 38], 50.00th=[ 43], 60.00th=[ 48], | 70.00th=[ 56], 80.00th=[ 68], 90.00th=[ 85], 95.00th=[ 100], | 99.00th=[ 128], 99.50th=[ 148], 99.90th=[ 199], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 7, max= 120, per=25.34%, avg=60.05, stdev=26.09, samples=209 iops : min= 1, max= 30, avg=14.62, stdev= 6.57, samples=209 lat (msec) : 4=0.10%, 10=18.26%, 20=18.49%, 50=41.83%, 100=18.78% lat (msec) : 250=2.51%, 750=0.03% cpu : usr=0.07%, sys=4.69%, ctx=5769, majf=0, minf=11 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=1485,1587,0,0 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=145773: Tue Aug 18 21:13:47 2026 read: IOPS=14, BW=56.9KiB/s (58.3kB/s)(6028KiB/105903msec) clat (msec): min=3, max=172, avg=18.02, stdev=15.61 lat (msec): min=3, max=172, avg=18.02, stdev=15.61 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 19], 80.00th=[ 26], 90.00th=[ 37], 95.00th=[ 49], | 99.00th=[ 85], 99.50th=[ 90], 99.90th=[ 153], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 7, max= 160, per=25.15%, avg=56.84, stdev=32.47, samples=209 iops : min= 1, max= 40, avg=13.81, stdev= 8.16, samples=209 write: IOPS=14, BW=59.1KiB/s (60.5kB/s)(6260KiB/105903msec); 0 zone resets clat (msec): min=17, max=779, avg=50.22, stdev=31.27 lat (msec): min=17, max=779, avg=50.22, stdev=31.27 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 43], 60.00th=[ 48], | 70.00th=[ 56], 80.00th=[ 68], 90.00th=[ 85], 95.00th=[ 101], | 99.00th=[ 133], 99.50th=[ 161], 99.90th=[ 194], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 15, max= 136, per=24.85%, avg=58.90, stdev=27.45, samples=209 iops : min= 3, max= 34, avg=14.33, stdev= 6.94, samples=209 lat (msec) : 4=0.03%, 10=16.96%, 20=19.34%, 50=43.29%, 100=17.64% lat (msec) : 250=2.70%, 1000=0.03% cpu : usr=0.08%, sys=4.76%, ctx=5884, majf=0, minf=11 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=1507,1565,0,0 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=145774: Tue Aug 18 21:13:47 2026 read: IOPS=14, BW=57.3KiB/s (58.7kB/s)(6052KiB/105602msec) clat (msec): min=3, max=158, avg=17.80, stdev=15.97 lat (msec): min=3, max=158, avg=17.80, stdev=15.97 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 19], 80.00th=[ 25], 90.00th=[ 36], 95.00th=[ 51], | 99.00th=[ 84], 99.50th=[ 97], 99.90th=[ 148], 99.95th=[ 159], | 99.99th=[ 159] bw ( KiB/s): min= 7, max= 200, per=25.47%, avg=57.57, stdev=32.57, samples=208 iops : min= 1, max= 50, avg=14.00, stdev= 8.19, samples=208 write: IOPS=14, BW=59.1KiB/s (60.5kB/s)(6236KiB/105602msec); 0 zone resets clat (msec): min=17, max=790, avg=50.38, stdev=31.91 lat (msec): min=17, max=790, avg=50.39, stdev=31.91 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 34], 40.00th=[ 38], 50.00th=[ 43], 60.00th=[ 48], | 70.00th=[ 56], 80.00th=[ 68], 90.00th=[ 85], 95.00th=[ 101], | 99.00th=[ 136], 99.50th=[ 159], 99.90th=[ 284], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 15, max= 127, per=24.89%, avg=58.99, stdev=26.61, samples=209 iops : min= 3, max= 31, avg=14.35, stdev= 6.72, samples=209 lat (msec) : 4=0.10%, 10=18.07%, 20=18.72%, 50=42.22%, 100=18.10% lat (msec) : 250=2.73%, 500=0.03%, 1000=0.03% cpu : usr=0.07%, sys=4.76%, ctx=5758, majf=0, minf=13 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=1513,1559,0,0 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=227KiB/s (232kB/s), 56.2KiB/s-57.3KiB/s (57.6kB/s-58.7kB/s), io=23.4MiB (24.6MB), run=105602-105903msec WRITE: bw=237KiB/s (243kB/s), 59.1KiB/s-60.1KiB/s (60.5kB/s-61.5kB/s), io=24.6MiB (25.7MB), run=105602-105903msec mix direct rw 16384 by fio with 4 jobs... mix buffer rw 16384 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145809: Tue Aug 18 21:14:07 2026 read: IOPS=28, BW=451KiB/s (462kB/s)(5920KiB/13126msec) clat (usec): min=40, max=96091, avg=18166.50, stdev=11217.00 lat (usec): min=41, max=96092, avg=18167.41, stdev=11217.04 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 101], 10.00th=[ 6194], 20.00th=[10945], | 30.00th=[12911], 40.00th=[14615], 50.00th=[16581], 60.00th=[19006], | 70.00th=[21365], 80.00th=[24249], 90.00th=[31327], 95.00th=[36439], | 99.00th=[55313], 99.50th=[63177], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 223, max= 766, per=25.64%, avg=442.08, stdev=132.48, samples=25 iops : min= 13, max= 47, avg=27.00, stdev= 8.22, samples=25 write: IOPS=30, BW=485KiB/s (497kB/s)(6368KiB/13126msec); 0 zone resets clat (usec): min=1246, max=109238, avg=15859.88, stdev=14296.09 lat (usec): min=1248, max=109240, avg=15868.50, stdev=14291.83 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 2540], 10.00th=[ 3195], 20.00th=[ 4490], | 30.00th=[ 5997], 40.00th=[ 8848], 50.00th=[ 11338], 60.00th=[ 15270], | 70.00th=[ 20579], 80.00th=[ 24511], 90.00th=[ 34341], 95.00th=[ 43779], | 99.00th=[ 60031], 99.50th=[107480], 99.90th=[109577], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 255, max= 670, per=26.66%, avg=483.36, stdev=105.86, samples=25 iops : min= 15, max= 41, avg=29.60, stdev= 6.56, samples=25 lat (usec) : 50=0.26%, 100=1.95%, 250=2.21%, 500=0.13% lat (msec) : 2=1.69%, 4=6.12%, 10=19.66%, 20=35.42%, 50=30.47% lat (msec) : 100=1.82%, 250=0.26% cpu : usr=0.08%, sys=21.94%, ctx=2085, majf=0, minf=14 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=145810: Tue Aug 18 21:14:07 2026 read: IOPS=25, BW=413KiB/s (423kB/s)(5744KiB/13893msec) clat (usec): min=37, max=72325, avg=19662.04, stdev=11593.15 lat (usec): min=38, max=72325, avg=19662.97, stdev=11593.13 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 110], 10.00th=[ 225], 20.00th=[11863], | 30.00th=[14091], 40.00th=[16057], 50.00th=[18482], 60.00th=[21365], | 70.00th=[24249], 80.00th=[27657], 90.00th=[33162], 95.00th=[39584], | 99.00th=[57410], 99.50th=[66847], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 235, max= 638, per=23.84%, avg=411.04, stdev=104.12, samples=27 iops : min= 14, max= 39, avg=25.07, stdev= 6.47, samples=27 write: IOPS=29, BW=471KiB/s (482kB/s)(6544KiB/13893msec); 0 zone resets clat (usec): min=1407, max=86936, avg=16638.36, stdev=14127.84 lat (usec): min=1408, max=86938, avg=16640.38, stdev=14127.55 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2245], 10.00th=[ 3458], 20.00th=[ 4621], | 30.00th=[ 6325], 40.00th=[ 9110], 50.00th=[12387], 60.00th=[16319], | 70.00th=[20841], 80.00th=[27657], 90.00th=[35914], 95.00th=[42206], | 99.00th=[67634], 99.50th=[71828], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 223, max= 734, per=25.45%, avg=461.33, stdev=121.23, samples=27 iops : min= 13, max= 45, avg=28.22, stdev= 7.67, samples=27 lat (usec) : 50=0.26%, 100=1.82%, 250=2.60% lat (msec) : 2=1.43%, 4=7.16%, 10=15.49%, 20=33.59%, 50=34.77% lat (msec) : 100=2.86% cpu : usr=0.10%, sys=21.65%, ctx=2106, majf=0, minf=14 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=145811: Tue Aug 18 21:14:07 2026 read: IOPS=28, BW=460KiB/s (471kB/s)(6256KiB/13612msec) clat (usec): min=36, max=129233, avg=18683.36, stdev=13615.51 lat (usec): min=37, max=129234, avg=18684.39, stdev=13615.51 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 84], 10.00th=[ 116], 20.00th=[ 11076], | 30.00th=[ 12911], 40.00th=[ 15270], 50.00th=[ 16909], 60.00th=[ 19792], | 70.00th=[ 22414], 80.00th=[ 27395], 90.00th=[ 32113], 95.00th=[ 39584], | 99.00th=[ 78119], 99.50th=[ 84411], 99.90th=[129500], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 191, max= 736, per=26.67%, avg=459.77, stdev=135.72, samples=26 iops : min= 11, max= 46, avg=28.15, stdev= 8.45, samples=26 write: IOPS=27, BW=443KiB/s (454kB/s)(6032KiB/13612msec); 0 zone resets clat (usec): min=1152, max=91215, avg=16542.53, stdev=13939.70 lat (usec): min=1154, max=91216, avg=16544.46, stdev=13940.19 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2933], 10.00th=[ 3720], 20.00th=[ 4752], | 30.00th=[ 6783], 40.00th=[ 9896], 50.00th=[12780], 60.00th=[15795], | 70.00th=[20579], 80.00th=[26346], 90.00th=[33817], 95.00th=[41681], | 99.00th=[69731], 99.50th=[85459], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 159, max= 667, per=23.60%, avg=427.81, stdev=120.81, samples=26 iops : min= 9, max= 41, avg=26.15, stdev= 7.59, samples=26 lat (usec) : 50=0.13%, 100=3.91%, 250=2.86%, 500=0.13%, 750=0.26% lat (msec) : 2=1.17%, 4=4.95%, 10=15.36%, 20=36.33%, 50=32.55% lat (msec) : 100=2.21%, 250=0.13% cpu : usr=0.11%, sys=21.01%, ctx=2187, majf=0, minf=13 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=145812: Tue Aug 18 21:14:07 2026 read: IOPS=28, BW=453KiB/s (464kB/s)(6032KiB/13321msec) clat (usec): min=30, max=144251, avg=18862.43, stdev=13680.60 lat (usec): min=31, max=144252, avg=18878.59, stdev=13684.75 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 69], 10.00th=[ 121], 20.00th=[ 10683], | 30.00th=[ 13173], 40.00th=[ 15270], 50.00th=[ 17695], 60.00th=[ 20579], | 70.00th=[ 23725], 80.00th=[ 27132], 90.00th=[ 32637], 95.00th=[ 39060], | 99.00th=[ 60556], 99.50th=[ 72877], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 223, max= 638, per=26.06%, avg=449.31, stdev=102.26, samples=26 iops : min= 13, max= 39, avg=27.50, stdev= 6.45, samples=26 write: IOPS=29, BW=470KiB/s (481kB/s)(6256KiB/13321msec); 0 zone resets clat (usec): min=1056, max=87430, avg=15575.76, stdev=12890.67 lat (usec): min=1056, max=87432, avg=15577.71, stdev=12890.70 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 2671], 10.00th=[ 3556], 20.00th=[ 4621], | 30.00th=[ 6128], 40.00th=[ 8291], 50.00th=[12387], 60.00th=[16188], | 70.00th=[19792], 80.00th=[25822], 90.00th=[33162], 95.00th=[39060], | 99.00th=[59507], 99.50th=[77071], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 284, max= 825, per=25.68%, avg=465.62, stdev=140.07, samples=26 iops : min= 17, max= 51, avg=28.54, stdev= 8.78, samples=26 lat (usec) : 50=0.65%, 100=2.60%, 250=3.78% lat (msec) : 2=1.43%, 4=6.25%, 10=17.32%, 20=32.81%, 50=33.20% lat (msec) : 100=1.82%, 250=0.13% cpu : usr=0.16%, sys=21.50%, ctx=2104, majf=0, minf=14 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=1724KiB/s (1765kB/s), 413KiB/s-460KiB/s (423kB/s-471kB/s), io=23.4MiB (24.5MB), run=13126-13893msec WRITE: bw=1814KiB/s (1857kB/s), 443KiB/s-485KiB/s (454kB/s-497kB/s), io=24.6MiB (25.8MB), run=13126-13893msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145804: Tue Aug 18 21:14:20 2026 read: IOPS=13, BW=220KiB/s (225kB/s)(5920KiB/26892msec) clat (msec): min=4, max=137, avg=18.70, stdev=17.37 lat (msec): min=4, max=137, avg=18.70, stdev=17.37 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 40], 95.00th=[ 55], | 99.00th=[ 91], 99.50th=[ 104], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 32, max= 442, per=24.53%, avg=217.81, stdev=95.25, samples=53 iops : min= 2, max= 27, avg=13.08, stdev= 5.97, samples=53 write: IOPS=14, BW=237KiB/s (242kB/s)(6368KiB/26892msec); 0 zone resets clat (msec): min=20, max=159, avg=50.06, stdev=20.26 lat (msec): min=20, max=159, avg=50.06, stdev=20.26 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 28], 10.00th=[ 31], 20.00th=[ 35], | 30.00th=[ 38], 40.00th=[ 43], 50.00th=[ 45], 60.00th=[ 51], | 70.00th=[ 56], 80.00th=[ 63], 90.00th=[ 74], 95.00th=[ 86], | 99.00th=[ 131], 99.50th=[ 146], 99.90th=[ 159], 99.95th=[ 159], | 99.99th=[ 159] bw ( KiB/s): min= 94, max= 384, per=25.19%, avg=235.57, stdev=85.66, samples=53 iops : min= 5, max= 24, avg=14.19, stdev= 5.39, samples=53 lat (msec) : 10=16.41%, 20=19.53%, 50=38.67%, 100=23.70%, 250=1.69% cpu : usr=0.09%, sys=5.76%, ctx=1515, majf=0, minf=15 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=145805: Tue Aug 18 21:14:20 2026 read: IOPS=13, BW=213KiB/s (218kB/s)(5744KiB/26946msec) clat (msec): min=4, max=101, avg=17.47, stdev=15.38 lat (msec): min=4, max=101, avg=17.47, stdev=15.38 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 22], 90.00th=[ 38], 95.00th=[ 52], | 99.00th=[ 88], 99.50th=[ 96], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 63, max= 512, per=24.29%, avg=215.69, stdev=107.48, samples=52 iops : min= 3, max= 32, avg=12.96, stdev= 6.71, samples=52 write: IOPS=15, BW=243KiB/s (249kB/s)(6544KiB/26946msec); 0 zone resets clat (msec): min=18, max=130, avg=50.38, stdev=18.92 lat (msec): min=18, max=130, avg=50.39, stdev=18.92 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 28], 10.00th=[ 31], 20.00th=[ 35], | 30.00th=[ 39], 40.00th=[ 43], 50.00th=[ 47], 60.00th=[ 51], | 70.00th=[ 57], 80.00th=[ 65], 90.00th=[ 78], 95.00th=[ 89], | 99.00th=[ 107], 99.50th=[ 113], 99.90th=[ 131], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 94, max= 384, per=25.74%, avg=240.66, stdev=70.17, samples=53 iops : min= 5, max= 24, avg=14.51, stdev= 4.41, samples=53 lat (msec) : 10=16.41%, 20=19.79%, 50=38.80%, 100=23.57%, 250=1.43% cpu : usr=0.06%, sys=5.82%, ctx=1572, majf=0, minf=10 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=145806: Tue Aug 18 21:14:20 2026 read: IOPS=14, BW=238KiB/s (244kB/s)(6256KiB/26269msec) clat (msec): min=4, max=111, avg=17.51, stdev=15.18 lat (msec): min=4, max=111, avg=17.52, stdev=15.18 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 38], 95.00th=[ 53], | 99.00th=[ 78], 99.50th=[ 111], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 95, max= 573, per=26.91%, avg=239.00, stdev=114.71, samples=52 iops : min= 5, max= 35, avg=14.38, stdev= 7.27, samples=52 write: IOPS=14, BW=230KiB/s (235kB/s)(6032KiB/26269msec); 0 zone resets clat (msec): min=20, max=191, avg=51.41, stdev=20.09 lat (msec): min=20, max=191, avg=51.41, stdev=20.09 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 29], 10.00th=[ 32], 20.00th=[ 37], | 30.00th=[ 40], 40.00th=[ 44], 50.00th=[ 48], 60.00th=[ 52], | 70.00th=[ 56], 80.00th=[ 65], 90.00th=[ 77], 95.00th=[ 87], | 99.00th=[ 130], 99.50th=[ 138], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 95, max= 352, per=24.48%, avg=228.87, stdev=71.14, samples=52 iops : min= 5, max= 22, avg=13.75, stdev= 4.38, samples=52 lat (msec) : 10=17.97%, 20=20.96%, 50=37.24%, 100=22.53%, 250=1.30% cpu : usr=0.09%, sys=5.72%, ctx=1490, majf=0, minf=11 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=145807: Tue Aug 18 21:14:20 2026 read: IOPS=14, BW=226KiB/s (232kB/s)(6032KiB/26660msec) clat (msec): min=4, max=110, avg=17.04, stdev=14.64 lat (msec): min=4, max=110, avg=17.04, stdev=14.64 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 23], 90.00th=[ 36], 95.00th=[ 49], | 99.00th=[ 82], 99.50th=[ 104], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 32, max= 448, per=25.17%, avg=223.54, stdev=96.96, samples=52 iops : min= 2, max= 28, avg=13.42, stdev= 6.00, samples=52 write: IOPS=14, BW=235KiB/s (240kB/s)(6256KiB/26660msec); 0 zone resets clat (msec): min=21, max=194, avg=51.61, stdev=23.08 lat (msec): min=21, max=194, avg=51.62, stdev=23.08 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 43], 50.00th=[ 47], 60.00th=[ 51], | 70.00th=[ 57], 80.00th=[ 65], 90.00th=[ 83], 95.00th=[ 99], | 99.00th=[ 136], 99.50th=[ 159], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 96, max= 384, per=24.95%, avg=233.27, stdev=80.53, samples=52 iops : min= 6, max= 24, avg=14.04, stdev= 5.05, samples=52 lat (msec) : 10=18.75%, 20=19.01%, 50=39.19%, 100=20.70%, 250=2.34% cpu : usr=0.07%, sys=5.51%, ctx=1503, majf=0, minf=12 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=889KiB/s (910kB/s), 213KiB/s-238KiB/s (218kB/s-244kB/s), io=23.4MiB (24.5MB), run=26269-26946msec WRITE: bw=935KiB/s (958kB/s), 230KiB/s-243KiB/s (235kB/s-249kB/s), io=24.6MiB (25.8MB), run=26269-26946msec mix direct rw 1048576 by fio with 4 jobs... mix buffer rw 1048576 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145828: Tue Aug 18 21:14:29 2026 read: IOPS=1, BW=2042KiB/s (2091kB/s)(7168KiB/3510msec) clat (msec): min=48, max=1311, avg=320.66, stdev=462.21 lat (msec): min=48, max=1311, avg=320.66, stdev=462.21 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 65], | 30.00th=[ 79], 40.00th=[ 79], 50.00th=[ 92], 60.00th=[ 167], | 70.00th=[ 167], 80.00th=[ 481], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 2043, max= 5380, per=79.51%, avg=3820.67, stdev=1679.18, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1459KiB/s (1494kB/s)(5120KiB/3510msec); 0 zone resets clat (msec): min=161, max=321, avg=249.07, stdev=71.92 lat (msec): min=161, max=321, avg=249.24, stdev=71.80 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 1793, max= 4096, per=49.43%, avg=3325.33, stdev=1327.05, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 250=33.33%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=7.44%, ctx=94, majf=0, minf=11 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=7,5,0,0 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=145829: Tue Aug 18 21:14:29 2026 read: IOPS=0, BW=481KiB/s (492kB/s)(2048KiB/4262msec) clat (msec): min=58, max=517, avg=287.90, stdev=325.03 lat (msec): min=58, max=517, avg=287.90, stdev=325.03 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 58], | 30.00th=[ 58], 40.00th=[ 58], 50.00th=[ 58], 60.00th=[ 518], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1793, max= 2043, per=39.92%, avg=1918.00, stdev=176.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2403KiB/s (2460kB/s)(10.0MiB/4262msec); 0 zone resets clat (msec): min=151, max=1324, avg=358.89, stdev=357.38 lat (msec): min=151, max=1324, avg=358.98, stdev=357.38 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 155], | 30.00th=[ 178], 40.00th=[ 203], 50.00th=[ 218], 60.00th=[ 243], | 70.00th=[ 257], 80.00th=[ 334], 90.00th=[ 531], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 1793, max= 6119, per=38.45%, avg=2586.86, stdev=1560.26, samples=7 iops : min= 1, max= 5, avg= 1.71, stdev= 1.50, samples=7 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67%, 2000=8.33% cpu : usr=0.05%, sys=10.91%, ctx=114, majf=0, minf=13 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=2,10,0,0 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=145830: Tue Aug 18 21:14:29 2026 read: IOPS=1, BW=1448KiB/s (1482kB/s)(6144KiB/4244msec) clat (msec): min=67, max=484, avg=223.99, stdev=139.67 lat (msec): min=67, max=484, avg=223.99, stdev=139.67 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 201], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 2039, max= 4096, per=70.91%, avg=3407.33, stdev=1185.02, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1448KiB/s (1482kB/s)(6144KiB/4244msec); 0 zone resets clat (msec): min=106, max=1604, avg=475.12, stdev=569.29 lat (msec): min=106, max=1604, avg=475.22, stdev=569.29 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 176], 50.00th=[ 176], 60.00th=[ 342], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 2019, max= 4079, per=43.77%, avg=2944.50, stdev=1070.19, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, 2000=8.33% cpu : usr=0.02%, sys=7.26%, ctx=126, majf=0, minf=10 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=6,6,0,0 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=145831: Tue Aug 18 21:14:29 2026 read: IOPS=1, BW=1513KiB/s (1550kB/s)(5120KiB/3383msec) clat (msec): min=84, max=395, avg=168.46, stdev=128.99 lat (msec): min=84, max=395, avg=168.46, stdev=128.99 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 85], | 30.00th=[ 92], 40.00th=[ 92], 50.00th=[ 134], 60.00th=[ 134], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2019, max= 4087, per=56.57%, avg=2718.00, stdev=1185.68, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=2, BW=2119KiB/s (2170kB/s)(7168KiB/3383msec); 0 zone resets clat (msec): min=134, max=1298, avg=352.02, stdev=420.50 lat (msec): min=134, max=1298, avg=352.09, stdev=420.50 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 155], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 199], 60.00th=[ 211], | 70.00th=[ 211], 80.00th=[ 292], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 2019, max= 4087, per=43.95%, avg=2956.25, stdev=1081.53, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=16.67%, 250=58.33%, 500=16.67%, 2000=8.33% cpu : usr=0.00%, sys=9.52%, ctx=84, majf=0, minf=12 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=5,7,0,0 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=4805KiB/s (4921kB/s), 481KiB/s-2042KiB/s (492kB/s-2091kB/s), io=20.0MiB (20.0MB), run=3383-4262msec WRITE: bw=6727KiB/s (6889kB/s), 1448KiB/s-2403KiB/s (1482kB/s-2460kB/s), io=28.0MiB (29.4MB), run=3383-4262msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145833: Tue Aug 18 21:14:30 2026 read: IOPS=1, BW=2015KiB/s (2064kB/s)(7168KiB/3557msec) clat (usec): min=508, max=1304.8k, avg=306782.40, stdev=445772.97 lat (usec): min=509, max=1304.8k, avg=306783.56, stdev=445772.65 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], | 20.00th=[ 108528], 30.00th=[ 149947], 40.00th=[ 149947], | 50.00th=[ 173016], 60.00th=[ 198181], 70.00th=[ 198181], | 80.00th=[ 212861], 90.00th=[1300235], 95.00th=[1300235], | 99.00th=[1300235], 99.50th=[1300235], 99.90th=[1300235], | 99.95th=[1300235], 99.99th=[1300235] bw ( KiB/s): min= 1721, max= 3946, per=65.52%, avg=3177.00, stdev=1261.60, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1439KiB/s (1474kB/s)(5120KiB/3557msec); 0 zone resets clat (msec): min=183, max=346, avg=243.10, stdev=67.76 lat (msec): min=183, max=346, avg=243.18, stdev=67.77 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 209], 60.00th=[ 209], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1932, max= 1996, per=28.97%, avg=1967.00, stdev=32.42, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 500=16.67%, 2000=8.33% cpu : usr=0.06%, sys=28.71%, ctx=655, majf=0, minf=12 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=7,5,0,0 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=145834: Tue Aug 18 21:14:30 2026 read: IOPS=0, BW=485KiB/s (497kB/s)(2048KiB/4223msec) clat (msec): min=242, max=253, avg=247.95, stdev= 8.14 lat (msec): min=242, max=253, avg=247.95, stdev= 8.14 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 253], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 253], 95.00th=[ 253], | 99.00th=[ 253], 99.50th=[ 253], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 1700, max= 2048, per=38.65%, avg=1874.00, stdev=246.07, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2425KiB/s (2483kB/s)(10.0MiB/4223msec); 0 zone resets clat (msec): min=77, max=1411, avg=347.76, stdev=398.78 lat (msec): min=77, max=1411, avg=347.84, stdev=398.78 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 80], | 30.00th=[ 140], 40.00th=[ 201], 50.00th=[ 205], 60.00th=[ 230], | 70.00th=[ 262], 80.00th=[ 313], 90.00th=[ 558], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 1973, max= 6144, per=53.09%, avg=3604.20, stdev=1713.99, samples=5 iops : min= 1, max= 6, avg= 3.00, stdev= 1.87, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=24.18%, ctx=450, majf=0, minf=11 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=2,10,0,0 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=145835: Tue Aug 18 21:14:30 2026 read: IOPS=1, BW=1649KiB/s (1688kB/s)(6144KiB/3727msec) clat (usec): min=495, max=384276, avg=91069.41, stdev=148767.46 lat (usec): min=496, max=384276, avg=91070.56, stdev=148767.11 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[ 627], | 30.00th=[ 627], 40.00th=[ 1909], 50.00th=[ 1909], 60.00th=[ 72877], | 70.00th=[ 86508], 80.00th=[ 86508], 90.00th=[383779], 95.00th=[383779], | 99.00th=[383779], 99.50th=[383779], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 1996, max= 4096, per=68.44%, avg=3318.67, stdev=1151.32, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1649KiB/s (1688kB/s)(6144KiB/3727msec); 0 zone resets clat (msec): min=142, max=1909, avg=526.11, stdev=690.62 lat (msec): min=142, max=1909, avg=526.16, stdev=690.62 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 211], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 1932, max= 4096, per=41.95%, avg=2848.00, stdev=1063.46, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 100=16.67%, 250=33.33%, 500=8.33%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=19.11%, ctx=591, majf=0, minf=12 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=6,6,0,0 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=145836: Tue Aug 18 21:14:30 2026 read: IOPS=1, BW=1243KiB/s (1273kB/s)(5120KiB/4120msec) clat (usec): min=479, max=371410, avg=149727.27, stdev=155498.11 lat (usec): min=495, max=371411, avg=149731.36, stdev=155494.68 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 482], 10.00th=[ 482], 20.00th=[ 482], | 30.00th=[ 603], 40.00th=[ 603], 50.00th=[179307], 60.00th=[179307], | 70.00th=[196084], 80.00th=[196084], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 1996, max= 6144, per=83.93%, avg=4070.00, stdev=2933.08, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1740KiB/s (1782kB/s)(7168KiB/4120msec); 0 zone resets clat (msec): min=135, max=1802, avg=464.01, stdev=603.85 lat (msec): min=136, max=1802, avg=464.08, stdev=603.85 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 159], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 167], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 481], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 1726, max= 1996, per=28.09%, avg=1906.75, stdev=123.37, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=50.00%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=18.50%, ctx=182, majf=0, minf=13 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=5,7,0,0 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=4850KiB/s (4966kB/s), 485KiB/s-2015KiB/s (497kB/s-2064kB/s), io=20.0MiB (20.0MB), run=3557-4223msec WRITE: bw=6789KiB/s (6952kB/s), 1439KiB/s-2425KiB/s (1474kB/s-2483kB/s), io=28.0MiB (29.4MB), run=3557-4223msec mix direct rw 4194304 by fio with 4 jobs... mix buffer rw 4194304 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145844: Tue Aug 18 21:14:36 2026 read: IOPS=1, BW=6269KiB/s (6420kB/s)(12.0MiB/1960msec) clat (msec): min=207, max=936, avg=630.35, stdev=378.49 lat (msec): min=207, max=936, avg=630.36, stdev=378.49 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.05%, sys=10.31%, ctx=52, majf=0, minf=12 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=3,0,0,0 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=145846: Tue Aug 18 21:14:36 2026 read: IOPS=0, BW=1928KiB/s (1975kB/s)(4096KiB/2124msec) clat (nsec): min=1151.1M, max=1151.1M, avg=1151097685.00, stdev= 0.00 lat (nsec): min=1151.1M, max=1151.1M, avg=1151100555.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1150], 5.00th=[ 1150], 10.00th=[ 1150], 20.00th=[ 1150], | 30.00th=[ 1150], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3857KiB/s (3949kB/s)(8192KiB/2124msec); 0 zone resets clat (msec): min=293, max=600, avg=447.00, stdev=217.68 lat (msec): min=293, max=601, avg=447.31, stdev=217.68 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.79%, ctx=109, majf=0, minf=15 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=1,2,0,0 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=145848: Tue Aug 18 21:14:36 2026 write: IOPS=1, BW=7006KiB/s (7174kB/s)(12.0MiB/1754msec); 0 zone resets clat (msec): min=460, max=648, avg=566.13, stdev=96.22 lat (msec): min=460, max=649, avg=566.44, stdev=96.28 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 8143, max= 8192, per=52.94%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.11%, sys=12.15%, ctx=85, majf=0, minf=12 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=0,3,0,0 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=145849: Tue Aug 18 21:14:36 2026 write: IOPS=1, BW=7857KiB/s (8045kB/s)(12.0MiB/1564msec); 0 zone resets clat (msec): min=131, max=1178, avg=510.29, stdev=580.13 lat (msec): min=132, max=1178, avg=510.77, stdev=580.14 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 222], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min=12583, max=12583, per=81.56%, avg=12583.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.06%, sys=14.91%, ctx=62, majf=0, minf=13 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=0,3,0,0 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=7714KiB/s (7899kB/s), 1928KiB/s-6269KiB/s (1975kB/s-6420kB/s), io=16.0MiB (16.8MB), run=1960-2124msec WRITE: bw=15.1MiB/s (15.8MB/s), 3857KiB/s-7857KiB/s (3949kB/s-8045kB/s), io=32.0MiB (33.6MB), run=1564-2124msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145842: Tue Aug 18 21:14:36 2026 read: IOPS=2, BW=8291KiB/s (8490kB/s)(12.0MiB/1482msec) clat (msec): min=446, max=469, avg=459.23, stdev=11.46 lat (msec): min=446, max=469, avg=459.23, stdev=11.46 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 6059, max= 8175, per=71.90%, avg=7117.00, stdev=1496.24, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=43.89%, ctx=2089, majf=0, minf=10 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=3,0,0,0 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=145843: Tue Aug 18 21:14:36 2026 read: IOPS=0, BW=2475KiB/s (2534kB/s)(4096KiB/1655msec) clat (nsec): min=465118k, max=465118k, avg=465118156.00, stdev= 0.00 lat (nsec): min=465119k, max=465119k, avg=465119472.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 6050, max= 6050, per=61.12%, avg=6050.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4950KiB/s (5069kB/s)(8192KiB/1655msec); 0 zone resets clat (msec): min=205, max=873, avg=539.53, stdev=472.64 lat (msec): min=205, max=874, avg=539.87, stdev=472.61 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8175, max= 8175, per=53.69%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=19.95%, ctx=555, majf=0, minf=13 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=1,2,0,0 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=145845: Tue Aug 18 21:14:36 2026 write: IOPS=1, BW=5710KiB/s (5847kB/s)(12.0MiB/2152msec); 0 zone resets clat (msec): min=167, max=1612, avg=700.38, stdev=793.99 lat (msec): min=167, max=1613, avg=700.79, stdev=793.88 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=17.02%, ctx=84, majf=0, minf=10 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=0,3,0,0 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=145847: Tue Aug 18 21:14:36 2026 write: IOPS=1, BW=6478KiB/s (6633kB/s)(12.0MiB/1897msec); 0 zone resets clat (msec): min=362, max=1046, avg=617.79, stdev=373.88 lat (msec): min=363, max=1047, avg=618.16, stdev=373.86 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 443], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 6660, max= 8175, per=48.72%, avg=7417.50, stdev=1071.27, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.05%, sys=12.24%, ctx=68, majf=0, minf=11 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=0,3,0,0 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=9900KiB/s (10.1MB/s), 2475KiB/s-8291KiB/s (2534kB/s-8490kB/s), io=16.0MiB (16.8MB), run=1482-1655msec WRITE: bw=14.9MiB/s (15.6MB/s), 4950KiB/s-6478KiB/s (5069kB/s-6633kB/s), io=32.0MiB (33.6MB), run=1655-2152msec