== sanity test 398b: DIO and buffer IO race ============== 20:10:13 (1787703013) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.75779 s, 8.7 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=178543: Tue Aug 25 20:12:43 2026 read: IOPS=11, BW=45.8KiB/s (46.9kB/s)(5992KiB/130813msec) clat (usec): min=41, max=996843, avg=48498.76, stdev=40838.68 lat (usec): min=41, max=996844, avg=48501.68, stdev=40837.66 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11600], 10.00th=[ 16712], 20.00th=[ 23200], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 55837], 80.00th=[ 68682], 90.00th=[ 91751], 95.00th=[111674], | 99.00th=[154141], 99.50th=[191890], 99.90th=[320865], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 119, per=25.00%, avg=45.51, stdev=19.53, samples=257 iops : min= 1, max= 29, avg=10.70, stdev= 4.88, samples=257 write: IOPS=12, BW=48.1KiB/s (49.3kB/s)(6296KiB/130813msec); 0 zone resets clat (usec): min=962, max=287990, avg=36682.13, stdev=38992.75 lat (usec): min=963, max=287992, avg=36687.35, stdev=38992.85 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1205], 10.00th=[ 1663], 20.00th=[ 3687], | 30.00th=[ 7504], 40.00th=[ 15270], 50.00th=[ 26084], 60.00th=[ 34866], | 70.00th=[ 46924], 80.00th=[ 63701], 90.00th=[ 90702], 95.00th=[111674], | 99.00th=[164627], 99.50th=[193987], 99.90th=[248513], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 147, per=25.24%, avg=47.95, stdev=21.55, samples=256 iops : min= 1, max= 36, avg=11.32, stdev= 5.40, samples=256 lat (usec) : 50=0.29%, 100=1.24%, 250=0.16%, 500=0.03%, 1000=0.03% lat (msec) : 2=6.15%, 4=4.59%, 10=6.71%, 20=10.35%, 50=37.92% lat (msec) : 100=25.03%, 250=7.36%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=4.67%, ctx=6476, 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=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=178544: Tue Aug 25 20:12:43 2026 read: IOPS=11, BW=45.7KiB/s (46.8kB/s)(5940KiB/129944msec) clat (usec): min=44, max=244388, avg=48113.17, stdev=31352.47 lat (usec): min=44, max=244389, avg=48114.88, stdev=31352.30 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 13435], 10.00th=[ 18482], 20.00th=[ 23725], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 49021], | 70.00th=[ 57934], 80.00th=[ 67634], 90.00th=[ 87557], 95.00th=[108528], | 99.00th=[156238], 99.50th=[183501], 99.90th=[204473], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 7, max= 95, per=24.95%, avg=45.40, stdev=17.38, samples=254 iops : min= 1, max= 23, avg=10.68, stdev= 4.34, samples=254 write: IOPS=12, BW=48.9KiB/s (50.0kB/s)(6348KiB/129944msec); 0 zone resets clat (usec): min=839, max=976519, avg=36558.15, stdev=45104.59 lat (usec): min=840, max=976521, avg=36564.78, stdev=45101.69 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1434], 20.00th=[ 3654], | 30.00th=[ 6652], 40.00th=[ 14615], 50.00th=[ 25560], 60.00th=[ 33817], | 70.00th=[ 45351], 80.00th=[ 64226], 90.00th=[ 91751], 95.00th=[111674], | 99.00th=[168821], 99.50th=[183501], 99.90th=[320865], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 7, max= 142, per=25.50%, avg=48.45, stdev=22.18, samples=254 iops : min= 1, max= 35, avg=11.45, stdev= 5.59, samples=254 lat (usec) : 50=0.16%, 100=1.24%, 250=0.13%, 1000=0.10% lat (msec) : 2=6.97%, 4=4.07%, 10=7.45%, 20=9.15%, 50=37.96% lat (msec) : 100=25.81%, 250=6.87%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=4.46%, ctx=6360, 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=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=178545: Tue Aug 25 20:12:43 2026 read: IOPS=11, BW=45.9KiB/s (46.0kB/s)(6028KiB/131463msec) clat (usec): min=35, max=295883, avg=46266.22, stdev=32012.91 lat (usec): min=36, max=295883, avg=46267.47, stdev=32012.89 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 11863], 10.00th=[ 16909], 20.00th=[ 22414], | 30.00th=[ 27132], 40.00th=[ 33162], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 54264], 80.00th=[ 65799], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[149947], 99.50th=[212861], 99.90th=[291505], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 119, per=25.26%, avg=45.98, stdev=19.09, samples=255 iops : min= 1, max= 29, avg=10.82, stdev= 4.79, samples=255 write: IOPS=11, BW=47.6KiB/s (48.8kB/s)(6260KiB/131463msec); 0 zone resets clat (usec): min=989, max=1080.7k, avg=39174.61, stdev=48304.47 lat (usec): min=989, max=1080.7k, avg=39177.56, stdev=48303.51 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1450], | 20.00th=[ 3752], 30.00th=[ 8455], 40.00th=[ 17957], | 50.00th=[ 26608], 60.00th=[ 38011], 70.00th=[ 50070], | 80.00th=[ 66847], 90.00th=[ 88605], 95.00th=[ 117965], | 99.00th=[ 177210], 99.50th=[ 204473], 99.90th=[ 283116], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 119, per=25.00%, avg=47.50, stdev=20.65, samples=256 iops : min= 1, max= 29, avg=11.21, stdev= 5.19, samples=256 lat (usec) : 50=0.36%, 100=1.30%, 250=0.13%, 750=0.07%, 1000=0.10% lat (msec) : 2=6.54%, 4=3.78%, 10=6.12%, 20=10.32%, 50=38.41% lat (msec) : 100=26.20%, 250=6.38%, 500=0.26%, 2000=0.03% cpu : usr=0.06%, sys=4.63%, ctx=6485, 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=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=178546: Tue Aug 25 20:12:43 2026 read: IOPS=11, BW=45.9KiB/s (47.0kB/s)(6052KiB/131849msec) clat (usec): min=32, max=1026.9k, avg=48175.94, stdev=40308.32 lat (usec): min=32, max=1026.9k, avg=48177.87, stdev=40308.16 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10159], 10.00th=[ 15795], | 20.00th=[ 22152], 30.00th=[ 28705], 40.00th=[ 34341], | 50.00th=[ 40633], 60.00th=[ 48497], 70.00th=[ 57934], | 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[ 105382], | 99.00th=[ 156238], 99.50th=[ 175113], 99.90th=[ 217056], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 7, max= 119, per=24.99%, avg=45.49, stdev=18.36, samples=258 iops : min= 1, max= 29, avg=10.71, stdev= 4.61, samples=258 write: IOPS=11, BW=47.3KiB/s (48.4kB/s)(6236KiB/131849msec); 0 zone resets clat (usec): min=897, max=307475, avg=37500.01, stdev=39325.86 lat (usec): min=898, max=307477, avg=37517.17, stdev=39365.83 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1500], 20.00th=[ 3523], | 30.00th=[ 7308], 40.00th=[ 17171], 50.00th=[ 26346], 60.00th=[ 36963], | 70.00th=[ 49546], 80.00th=[ 65274], 90.00th=[ 91751], 95.00th=[112722], | 99.00th=[168821], 99.50th=[200279], 99.90th=[258999], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 127, per=24.59%, avg=46.73, stdev=22.80, samples=259 iops : min= 1, max= 31, avg=11.01, stdev= 5.74, samples=259 lat (usec) : 50=0.33%, 100=1.50%, 250=0.10%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=6.67%, 4=4.20%, 10=6.45%, 20=10.68%, 50=35.97% lat (msec) : 100=26.89%, 250=6.90%, 500=0.07%, 2000=0.03% cpu : usr=0.07%, sys=4.56%, ctx=6486, 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=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=182KiB/s (186kB/s), 45.7KiB/s-45.9KiB/s (46.8kB/s-47.0kB/s), io=23.4MiB (24.6MB), run=129944-131849msec WRITE: bw=191KiB/s (195kB/s), 47.3KiB/s-48.9KiB/s (48.4kB/s-50.0kB/s), io=24.6MiB (25.7MB), run=129944-131849msec fio: pid=178549, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=178547: Tue Aug 25 20:13:14 2026 read: IOPS=9, BW=36.7KiB/s (37.6kB/s)(5992KiB/163339msec) clat (msec): min=5, max=1019, avg=43.02, stdev=51.47 lat (msec): min=5, max=1019, avg=43.02, stdev=51.46 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 101], 95.00th=[ 140], | 99.00th=[ 228], 99.50th=[ 253], 99.90th=[ 368], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 151, per=28.95%, avg=37.64, stdev=30.28, samples=310 iops : min= 1, max= 37, avg= 8.77, stdev= 7.62, samples=310 write: IOPS=9, BW=38.5KiB/s (39.5kB/s)(6296KiB/163339msec); 0 zone resets clat (msec): min=10, max=349, avg=62.61, stdev=49.79 lat (msec): min=10, max=349, avg=62.62, stdev=49.80 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 44], 60.00th=[ 57], | 70.00th=[ 75], 80.00th=[ 101], 90.00th=[ 133], 95.00th=[ 163], | 99.00th=[ 228], 99.50th=[ 255], 99.90th=[ 347], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 143, per=28.33%, avg=38.53, stdev=29.26, samples=318 iops : min= 1, max= 35, avg= 8.99, stdev= 7.35, samples=318 lat (msec) : 10=4.33%, 20=19.79%, 50=41.02%, 100=19.73%, 250=14.62% lat (msec) : 500=0.49%, 2000=0.03% cpu : usr=0.06%, sys=1.60%, ctx=4862, 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=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=178548: Tue Aug 25 20:13:14 2026 read: IOPS=9, BW=36.6KiB/s (37.5kB/s)(5940KiB/162183msec) clat (msec): min=4, max=1034, avg=40.94, stdev=46.65 lat (msec): min=4, max=1034, avg=40.94, stdev=46.66 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 96], 95.00th=[ 124], | 99.00th=[ 194], 99.50th=[ 232], 99.90th=[ 300], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 128, per=28.96%, avg=37.65, stdev=29.09, samples=306 iops : min= 1, max= 32, avg= 8.77, stdev= 7.32, samples=306 write: IOPS=9, BW=39.1KiB/s (40.1kB/s)(6348KiB/162183msec); 0 zone resets clat (msec): min=8, max=348, avg=63.66, stdev=50.02 lat (msec): min=8, max=348, avg=63.66, stdev=50.02 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 36], 50.00th=[ 45], 60.00th=[ 58], | 70.00th=[ 78], 80.00th=[ 103], 90.00th=[ 133], 95.00th=[ 167], | 99.00th=[ 230], 99.50th=[ 249], 99.90th=[ 296], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 141, per=28.51%, avg=38.77, stdev=28.32, samples=317 iops : min= 1, max= 35, avg= 9.06, stdev= 7.13, samples=317 lat (msec) : 10=4.26%, 20=18.23%, 50=42.55%, 100=19.99%, 250=14.68% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.06%, sys=1.64%, ctx=4845, 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=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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=178549: Tue Aug 25 20:13:14 2026 read: IOPS=6, BW=25.6KiB/s (26.2kB/s)(3396KiB/132750msec) clat (msec): min=7, max=382, avg=65.79, stdev=52.43 lat (msec): min=7, max=382, avg=65.79, stdev=52.43 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 60], | 70.00th=[ 74], 80.00th=[ 99], 90.00th=[ 134], 95.00th=[ 176], | 99.00th=[ 271], 99.50th=[ 275], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 87, per=19.81%, avg=25.75, stdev=14.20, samples=254 iops : min= 1, max= 21, avg= 5.78, stdev= 3.58, samples=254 write: IOPS=6, BW=25.9KiB/s (26.6kB/s)(3444KiB/132750msec); 0 zone resets clat (msec): min=16, max=1053, avg=88.90, stdev=60.29 lat (msec): min=16, max=1053, avg=88.91, stdev=60.28 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 30], 10.00th=[ 36], 20.00th=[ 46], | 30.00th=[ 56], 40.00th=[ 67], 50.00th=[ 78], 60.00th=[ 89], | 70.00th=[ 105], 80.00th=[ 125], 90.00th=[ 155], 95.00th=[ 180], | 99.00th=[ 292], 99.50th=[ 313], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 7, max= 63, per=19.07%, avg=25.93, stdev=11.82, samples=255 iops : min= 1, max= 15, avg= 5.82, stdev= 2.98, samples=255 lat (msec) : 10=0.18%, 20=4.38%, 50=32.96%, 100=36.94%, 250=24.08% lat (msec) : 500=1.34%, 2000=0.06% cpu : usr=0.03%, sys=1.24%, ctx=2172, 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=850,861,0,0 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=178550: Tue Aug 25 20:13:14 2026 read: IOPS=9, BW=37.0KiB/s (37.9kB/s)(6052KiB/163567msec) clat (msec): min=4, max=339, avg=43.23, stdev=45.14 lat (msec): min=4, max=339, avg=43.23, stdev=45.14 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 64], 90.00th=[ 103], 95.00th=[ 140], | 99.00th=[ 213], 99.50th=[ 262], 99.90th=[ 321], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 160, per=29.53%, avg=38.39, stdev=30.12, samples=305 iops : min= 1, max= 40, avg= 8.97, stdev= 7.57, samples=305 write: IOPS=9, BW=38.1KiB/s (39.0kB/s)(6236KiB/163567msec); 0 zone resets clat (msec): min=8, max=1046, avg=62.77, stdev=56.59 lat (msec): min=8, max=1046, avg=62.77, stdev=56.59 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 56], | 70.00th=[ 72], 80.00th=[ 99], 90.00th=[ 134], 95.00th=[ 167], | 99.00th=[ 245], 99.50th=[ 292], 99.90th=[ 355], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 143, per=28.39%, avg=38.62, stdev=29.24, samples=313 iops : min= 1, max= 35, avg= 9.01, stdev= 7.35, samples=313 lat (msec) : 10=4.26%, 20=19.63%, 50=41.76%, 100=19.34%, 250=14.26% lat (msec) : 500=0.72%, 2000=0.03% cpu : usr=0.05%, sys=1.58%, ctx=4820, 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=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=131KiB/s (134kB/s), 25.6KiB/s-37.0KiB/s (26.2kB/s-37.9kB/s), io=20.9MiB (21.9MB), run=132750-163567msec WRITE: bw=136KiB/s (140kB/s), 25.9KiB/s-39.1KiB/s (26.6kB/s-40.1kB/s), io=21.8MiB (22.9MB), run=132750-163567msec 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=178592: Tue Aug 25 20:13:56 2026 read: IOPS=12, BW=205KiB/s (210kB/s)(5920KiB/28901msec) clat (usec): min=37, max=192954, avg=41988.79, stdev=27426.22 lat (usec): min=37, max=192955, avg=41994.17, stdev=27433.83 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 89], 20.00th=[ 22414], | 30.00th=[ 27919], 40.00th=[ 32113], 50.00th=[ 39060], 60.00th=[ 44827], | 70.00th=[ 52691], 80.00th=[ 59507], 90.00th=[ 72877], 95.00th=[ 92799], | 99.00th=[127402], 99.50th=[158335], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 89, max= 352, per=26.25%, avg=205.00, stdev=52.56, samples=57 iops : min= 5, max= 22, avg=12.05, stdev= 3.34, samples=57 write: IOPS=13, BW=220KiB/s (226kB/s)(6368KiB/28901msec); 0 zone resets clat (usec): min=1513, max=159654, avg=32672.08, stdev=32135.58 lat (usec): min=1515, max=159656, avg=32688.93, stdev=32125.98 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1876], 10.00th=[ 3064], 20.00th=[ 5604], | 30.00th=[ 7767], 40.00th=[ 13304], 50.00th=[ 21890], 60.00th=[ 30802], | 70.00th=[ 43254], 80.00th=[ 57410], 90.00th=[ 79168], 95.00th=[ 98042], | 99.00th=[143655], 99.50th=[147850], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 29, max= 402, per=26.76%, avg=219.98, stdev=87.10, samples=57 iops : min= 1, max= 25, avg=12.98, stdev= 5.49, samples=57 lat (usec) : 50=0.91%, 100=3.91%, 250=0.13%, 1000=0.13% lat (msec) : 2=3.52%, 4=3.91%, 10=10.29%, 20=9.51%, 50=37.89% lat (msec) : 100=25.91%, 250=3.91% cpu : usr=0.06%, sys=6.09%, ctx=1708, 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=178593: Tue Aug 25 20:13:56 2026 read: IOPS=11, BW=187KiB/s (192kB/s)(5744KiB/30648msec) clat (usec): min=40, max=243351, avg=45275.40, stdev=30140.51 lat (usec): min=40, max=243352, avg=45276.80, stdev=30140.52 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 100], 20.00th=[ 23987], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 42730], 60.00th=[ 48497], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 81265], 95.00th=[ 92799], | 99.00th=[137364], 99.50th=[166724], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 30, max= 382, per=24.27%, avg=189.53, stdev=79.47, samples=59 iops : min= 1, max= 23, avg=11.07, stdev= 4.99, samples=59 write: IOPS=13, BW=214KiB/s (219kB/s)(6544KiB/30648msec); 0 zone resets clat (usec): min=1477, max=164575, avg=34483.20, stdev=34445.52 lat (usec): min=1478, max=164577, avg=34485.45, stdev=34445.39 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2114], 10.00th=[ 3130], 20.00th=[ 5211], | 30.00th=[ 8094], 40.00th=[ 14353], 50.00th=[ 23725], 60.00th=[ 33817], | 70.00th=[ 44303], 80.00th=[ 60031], 90.00th=[ 84411], 95.00th=[112722], | 99.00th=[145753], 99.50th=[152044], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 30, max= 384, per=25.84%, avg=212.40, stdev=83.43, samples=60 iops : min= 1, max= 24, avg=12.50, stdev= 5.29, samples=60 lat (usec) : 50=0.52%, 100=4.17%, 250=0.13%, 500=0.13% lat (msec) : 2=2.34%, 4=5.47%, 10=9.90%, 20=9.24%, 50=36.33% lat (msec) : 100=27.34%, 250=4.43% cpu : usr=0.06%, sys=5.43%, ctx=1693, 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=178594: Tue Aug 25 20:13:56 2026 read: IOPS=12, BW=204KiB/s (209kB/s)(6256KiB/30622msec) clat (usec): min=45, max=190693, avg=45453.93, stdev=30152.16 lat (usec): min=45, max=190694, avg=45458.87, stdev=30154.68 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 58], 10.00th=[ 11076], 20.00th=[ 23200], | 30.00th=[ 28967], 40.00th=[ 33817], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 57410], 80.00th=[ 65274], 90.00th=[ 82314], 95.00th=[100140], | 99.00th=[143655], 99.50th=[181404], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 90, max= 382, per=26.22%, avg=204.77, stdev=58.16, samples=60 iops : min= 5, max= 23, avg=12.03, stdev= 3.64, samples=60 write: IOPS=12, BW=197KiB/s (202kB/s)(6032KiB/30622msec); 0 zone resets clat (usec): min=1453, max=165352, avg=33767.91, stdev=29592.56 lat (usec): min=1455, max=165354, avg=33771.26, stdev=29595.98 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2073], 10.00th=[ 3589], 20.00th=[ 6063], | 30.00th=[ 11076], 40.00th=[ 19006], 50.00th=[ 28967], 60.00th=[ 36963], | 70.00th=[ 44827], 80.00th=[ 56886], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[133694], 99.50th=[156238], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 63, max= 478, per=23.56%, avg=193.68, stdev=83.90, samples=60 iops : min= 3, max= 29, avg=11.33, stdev= 5.29, samples=60 lat (usec) : 50=0.52%, 100=4.17%, 250=0.39% lat (msec) : 2=2.08%, 4=4.17%, 10=7.81%, 20=8.59%, 50=40.76% lat (msec) : 100=27.21%, 250=4.30% cpu : usr=0.05%, sys=5.82%, ctx=1777, 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=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=178595: Tue Aug 25 20:13:56 2026 read: IOPS=12, BW=201KiB/s (205kB/s)(6032KiB/30069msec) clat (usec): min=43, max=187737, avg=42902.18, stdev=31285.87 lat (usec): min=44, max=187738, avg=42903.42, stdev=31285.96 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 81], 20.00th=[ 20579], | 30.00th=[ 27657], 40.00th=[ 33424], 50.00th=[ 38536], 60.00th=[ 43779], | 70.00th=[ 52167], 80.00th=[ 63177], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[154141], 99.50th=[170918], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 63, max= 318, per=25.93%, avg=202.52, stdev=59.05, samples=58 iops : min= 3, max= 19, avg=11.90, stdev= 3.73, samples=58 write: IOPS=13, BW=208KiB/s (213kB/s)(6256KiB/30069msec); 0 zone resets clat (usec): min=1552, max=257701, avg=34528.91, stdev=33042.33 lat (usec): min=1553, max=257703, avg=34535.04, stdev=33040.68 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2442], 10.00th=[ 4178], 20.00th=[ 6718], | 30.00th=[ 9372], 40.00th=[ 15139], 50.00th=[ 25822], 60.00th=[ 34341], | 70.00th=[ 46924], 80.00th=[ 59507], 90.00th=[ 79168], 95.00th=[ 98042], | 99.00th=[126354], 99.50th=[168821], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 60, max= 541, per=25.34%, avg=208.29, stdev=85.62, samples=59 iops : min= 3, max= 33, avg=12.25, stdev= 5.40, samples=59 lat (usec) : 50=0.52%, 100=5.47%, 250=0.65%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.95%, 4=2.86%, 10=11.33%, 20=8.85%, 50=38.54% lat (msec) : 100=24.35%, 250=4.95%, 500=0.13% cpu : usr=0.08%, sys=5.67%, ctx=1701, 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=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=782KiB/s (800kB/s), 187KiB/s-205KiB/s (192kB/s-210kB/s), io=23.4MiB (24.5MB), run=28901-30648msec WRITE: bw=822KiB/s (842kB/s), 197KiB/s-220KiB/s (202kB/s-226kB/s), io=24.6MiB (25.8MB), run=28901-30648msec fio: pid=178590, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=178587: Tue Aug 25 20:14:06 2026 read: IOPS=9, BW=144KiB/s (148kB/s)(5920KiB/41091msec) clat (msec): min=7, max=261, avg=40.18, stdev=34.61 lat (msec): min=7, max=261, avg=40.18, stdev=34.61 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 91], 95.00th=[ 118], | 99.00th=[ 159], 99.50th=[ 176], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 447, per=26.77%, avg=143.74, stdev=94.11, samples=80 iops : min= 1, max= 27, avg= 8.22, stdev= 5.91, samples=80 write: IOPS=9, BW=155KiB/s (159kB/s)(6368KiB/41091msec); 0 zone resets clat (msec): min=14, max=274, avg=65.70, stdev=44.91 lat (msec): min=14, max=274, avg=65.70, stdev=44.91 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 65], | 70.00th=[ 81], 80.00th=[ 101], 90.00th=[ 129], 95.00th=[ 153], | 99.00th=[ 234], 99.50th=[ 236], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 414, per=27.02%, avg=153.73, stdev=93.29, samples=81 iops : min= 1, max= 25, avg= 8.85, stdev= 5.88, samples=81 lat (msec) : 10=1.82%, 20=16.28%, 50=44.40%, 100=22.92%, 250=14.32% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.58%, ctx=1165, 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=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=178588: Tue Aug 25 20:14:06 2026 read: IOPS=8, BW=141KiB/s (144kB/s)(5744KiB/40818msec) clat (msec): min=6, max=238, avg=41.81, stdev=36.45 lat (msec): min=6, max=238, avg=41.81, stdev=36.45 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 91], 95.00th=[ 126], | 99.00th=[ 180], 99.50th=[ 203], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 446, per=26.97%, avg=144.83, stdev=93.95, samples=77 iops : min= 1, max= 27, avg= 8.30, stdev= 5.96, samples=77 write: IOPS=10, BW=160KiB/s (164kB/s)(6544KiB/40818msec); 0 zone resets clat (msec): min=13, max=268, avg=62.03, stdev=43.39 lat (msec): min=13, max=268, avg=62.03, stdev=43.39 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 61], | 70.00th=[ 71], 80.00th=[ 89], 90.00th=[ 123], 95.00th=[ 146], | 99.00th=[ 211], 99.50th=[ 243], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 542, per=28.04%, avg=159.57, stdev=94.38, samples=79 iops : min= 1, max= 33, avg= 9.23, stdev= 5.94, samples=79 lat (msec) : 10=1.30%, 20=14.58%, 50=47.53%, 100=24.61%, 250=11.72% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.84%, ctx=1246, 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=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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=178590: Tue Aug 25 20:14:06 2026 read: IOPS=7, BW=126KiB/s (130kB/s)(4384KiB/34662msec) clat (msec): min=7, max=262, avg=51.97, stdev=42.19 lat (msec): min=7, max=262, avg=51.97, stdev=42.19 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 47], | 70.00th=[ 58], 80.00th=[ 81], 90.00th=[ 110], 95.00th=[ 142], | 99.00th=[ 201], 99.50th=[ 232], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 30, max= 414, per=23.02%, avg=123.62, stdev=76.69, samples=68 iops : min= 1, max= 25, avg= 6.94, stdev= 4.80, samples=68 write: IOPS=7, BW=122KiB/s (125kB/s)(4240KiB/34662msec); 0 zone resets clat (msec): min=16, max=245, avg=75.85, stdev=42.39 lat (msec): min=16, max=245, avg=75.86, stdev=42.40 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 30], 20.00th=[ 38], | 30.00th=[ 51], 40.00th=[ 59], 50.00th=[ 71], 60.00th=[ 80], | 70.00th=[ 89], 80.00th=[ 103], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 218], 99.50th=[ 241], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 376, per=21.39%, avg=121.72, stdev=63.49, samples=68 iops : min= 1, max= 23, avg= 6.82, stdev= 4.00, samples=68 lat (msec) : 10=0.19%, 20=10.74%, 50=36.11%, 100=35.93%, 250=16.67% lat (msec) : 500=0.19% cpu : usr=0.03%, sys=1.53%, ctx=722, 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=275,265,0,0 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=178591: Tue Aug 25 20:14:06 2026 read: IOPS=9, BW=147KiB/s (151kB/s)(6032KiB/40943msec) clat (msec): min=6, max=225, avg=41.77, stdev=36.09 lat (msec): min=6, max=225, avg=41.77, stdev=36.09 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 94], 95.00th=[ 123], | 99.00th=[ 167], 99.50th=[ 211], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 31, max= 447, per=27.51%, avg=147.71, stdev=95.70, samples=80 iops : min= 1, max= 27, avg= 8.47, stdev= 6.05, samples=80 write: IOPS=9, BW=153KiB/s (156kB/s)(6256KiB/40943msec); 0 zone resets clat (msec): min=16, max=246, avg=63.67, stdev=45.06 lat (msec): min=16, max=246, avg=63.67, stdev=45.06 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 46], 60.00th=[ 59], | 70.00th=[ 73], 80.00th=[ 93], 90.00th=[ 125], 95.00th=[ 153], | 99.00th=[ 232], 99.50th=[ 241], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 382, per=26.75%, avg=152.22, stdev=95.56, samples=81 iops : min= 1, max= 23, avg= 8.75, stdev= 6.03, samples=81 lat (msec) : 10=1.95%, 20=15.10%, 50=46.74%, 100=22.92%, 250=13.28% cpu : usr=0.05%, sys=1.66%, ctx=1249, 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=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=537KiB/s (550kB/s), 126KiB/s-147KiB/s (130kB/s-151kB/s), io=21.6MiB (22.6MB), run=34662-41091msec WRITE: bw=570KiB/s (583kB/s), 122KiB/s-160KiB/s (125kB/s-164kB/s), io=22.9MiB (23.0MB), run=34662-41091msec 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=178608: Tue Aug 25 20:14:24 2026 read: IOPS=1, BW=1250KiB/s (1280kB/s)(7168KiB/5734msec) clat (msec): min=83, max=2281, avg=506.75, stdev=794.89 lat (msec): min=83, max=2281, avg=506.75, stdev=794.89 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 97], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 234], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 472], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 1582, max= 4079, per=97.08%, avg=2923.00, stdev=1330.77, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=893KiB/s (914kB/s)(5120KiB/5734msec); 0 zone resets clat (msec): min=241, max=664, avg=397.81, stdev=163.70 lat (msec): min=241, max=664, avg=397.89, stdev=163.71 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1973, max= 2043, per=47.72%, avg=2011.60, stdev=34.39, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=25.00%, 250=16.67%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.27%, ctx=143, 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=178609: Tue Aug 25 20:14:24 2026 read: IOPS=0, BW=308KiB/s (315kB/s)(2048KiB/6655msec) clat (msec): min=105, max=364, avg=234.95, stdev=183.36 lat (msec): min=105, max=364, avg=234.95, stdev=183.36 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 106], | 30.00th=[ 106], 40.00th=[ 106], 50.00th=[ 106], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1590, max= 2043, per=60.33%, avg=1816.50, stdev=320.32, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1539KiB/s (1576kB/s)(10.0MiB/6655msec); 0 zone resets clat (msec): min=121, max=3612, avg=613.62, stdev=1063.42 lat (msec): min=125, max=3612, avg=614.05, stdev=1063.32 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 130], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 309], 80.00th=[ 502], 90.00th=[ 542], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1992, max= 6119, per=77.02%, avg=3246.40, stdev=1827.54, samples=5 iops : min= 1, max= 5, avg= 2.20, stdev= 1.79, samples=5 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=3.07%, ctx=81, 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=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=178612: Tue Aug 25 20:14:24 2026 read: IOPS=0, BW=923KiB/s (946kB/s)(6144KiB/6654msec) clat (msec): min=137, max=268, avg=217.68, stdev=49.71 lat (msec): min=137, max=268, avg=217.68, stdev=49.71 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 213], 50.00th=[ 213], 60.00th=[ 236], | 70.00th=[ 264], 80.00th=[ 264], 90.00th=[ 271], 95.00th=[ 271], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 1992, max= 3946, per=83.03%, avg=2500.00, stdev=964.23, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=923KiB/s (946kB/s)(6144KiB/6654msec); 0 zone resets clat (msec): min=288, max=2920, avg=857.42, stdev=1029.97 lat (msec): min=288, max=2920, avg=857.51, stdev=1029.96 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 542], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 1563, max= 2039, per=45.49%, avg=1917.20, stdev=199.60, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.06%, ctx=121, 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=178615: Tue Aug 25 20:14:24 2026 read: IOPS=0, BW=753KiB/s (771kB/s)(5120KiB/6801msec) clat (msec): min=62, max=336, avg=200.96, stdev=115.77 lat (msec): min=62, max=336, avg=200.96, stdev=115.77 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 63], | 30.00th=[ 120], 40.00th=[ 120], 50.00th=[ 190], 60.00th=[ 190], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 2043, max= 6059, per=100.00%, avg=4051.00, stdev=2839.74, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1054KiB/s (1079kB/s)(7168KiB/6801msec); 0 zone resets clat (msec): min=88, max=3659, avg=800.64, stdev=1280.81 lat (msec): min=88, max=3659, avg=800.76, stdev=1280.90 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 105], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 321], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 768], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 1976, max= 4023, per=57.29%, avg=2414.60, stdev=899.59, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=41.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.00%, ctx=131, 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=3011KiB/s (3084kB/s), 308KiB/s-1250KiB/s (315kB/s-1280kB/s), io=20.0MiB (20.0MB), run=5734-6801msec WRITE: bw=4216KiB/s (4317kB/s), 893KiB/s-1539KiB/s (914kB/s-1576kB/s), io=28.0MiB (29.4MB), run=5734-6801msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178610: Tue Aug 25 20:14:24 2026 read: IOPS=1, BW=1900KiB/s (1946kB/s)(7168KiB/3772msec) clat (usec): min=447, max=2293.1k, avg=419086.96, stdev=830215.97 lat (usec): min=448, max=2293.1k, avg=419088.47, stdev=830215.84 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 449], 10.00th=[ 449], | 20.00th=[ 1012], 30.00th=[ 123208], 40.00th=[ 123208], | 50.00th=[ 129500], 60.00th=[ 181404], 70.00th=[ 181404], | 80.00th=[ 204473], 90.00th=[2298479], 95.00th=[2298479], | 99.00th=[2298479], 99.50th=[2298479], 99.90th=[2298479], | 99.95th=[2298479], 99.99th=[2298479] bw ( KiB/s): min= 1928, max= 4096, per=92.12%, avg=2793.00, stdev=1021.71, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1357KiB/s (1390kB/s)(5120KiB/3772msec); 0 zone resets clat (msec): min=110, max=195, avg=162.76, stdev=34.64 lat (msec): min=110, max=195, avg=162.84, stdev=34.62 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 111], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 163], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 197], 95.00th=[ 197], | 99.00th=[ 197], 99.50th=[ 197], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 2048, max= 5785, per=92.26%, avg=3916.50, stdev=2642.46, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (usec) : 500=8.33% lat (msec) : 2=8.33%, 250=75.00%, >=2000=8.33% cpu : usr=0.00%, sys=14.56%, ctx=483, 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=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=178611: Tue Aug 25 20:14:24 2026 read: IOPS=0, BW=303KiB/s (311kB/s)(2048KiB/6753msec) clat (msec): min=159, max=228, avg=194.06, stdev=49.06 lat (msec): min=159, max=228, avg=194.07, stdev=49.06 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 230], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 230], 95.00th=[ 230], | 99.00th=[ 230], 99.50th=[ 230], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 1617, max= 2019, per=59.96%, avg=1818.00, stdev=284.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1516KiB/s (1553kB/s)(10.0MiB/6753msec); 0 zone resets clat (msec): min=149, max=3780, avg=620.56, stdev=1118.01 lat (msec): min=149, max=3780, avg=620.67, stdev=1118.00 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 157], | 30.00th=[ 159], 40.00th=[ 199], 50.00th=[ 234], 60.00th=[ 262], | 70.00th=[ 266], 80.00th=[ 485], 90.00th=[ 514], 95.00th=[ 3775], | 99.00th=[ 3775], 99.50th=[ 3775], 99.90th=[ 3775], 99.95th=[ 3775], | 99.99th=[ 3775] bw ( KiB/s): min= 2019, max= 4079, per=67.05%, avg=2846.40, stdev=1110.71, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=10.37%, ctx=184, 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=178613: Tue Aug 25 20:14:24 2026 read: IOPS=1, BW=1083KiB/s (1109kB/s)(6144KiB/5675msec) clat (usec): min=485, max=265583, avg=114839.95, stdev=126882.76 lat (usec): min=486, max=265584, avg=114840.93, stdev=126882.68 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 537], | 30.00th=[ 537], 40.00th=[ 635], 50.00th=[ 635], 60.00th=[202376], | 70.00th=[219153], 80.00th=[219153], 90.00th=[265290], 95.00th=[265290], | 99.00th=[265290], 99.50th=[265290], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 2039, max= 4007, per=100.00%, avg=3279.33, stdev=1079.53, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1083KiB/s (1109kB/s)(6144KiB/5675msec); 0 zone resets clat (msec): min=157, max=3080, avg=796.73, stdev=1130.50 lat (msec): min=158, max=3080, avg=796.99, stdev=1130.38 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 493], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 1896, max= 4079, per=58.99%, avg=2504.25, stdev=1051.59, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 250=33.33%, 500=25.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.39%, ctx=159, 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=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=178614: Tue Aug 25 20:14:24 2026 read: IOPS=0, BW=977KiB/s (1000kB/s)(5120KiB/5242msec) clat (usec): min=606, max=336918, avg=126028.86, stdev=170579.56 lat (usec): min=607, max=336919, avg=126030.02, stdev=170579.71 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[ 611], | 30.00th=[ 947], 40.00th=[ 947], 50.00th=[ 4883], 60.00th=[ 4883], | 70.00th=[287310], 80.00th=[287310], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1367KiB/s (1400kB/s)(7168KiB/5242msec); 0 zone resets clat (msec): min=143, max=2627, avg=627.92, stdev=889.70 lat (msec): min=143, max=2627, avg=628.00, stdev=889.71 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 188], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 292], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 498], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 1526, max= 3856, per=65.82%, avg=2794.25, stdev=1205.18, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 10=8.33%, 250=16.67%, 500=50.00%, >=2000=8.33% cpu : usr=0.00%, sys=11.07%, ctx=256, 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=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=3033KiB/s (3106kB/s), 303KiB/s-1900KiB/s (311kB/s-1946kB/s), io=20.0MiB (20.0MB), run=3772-6753msec WRITE: bw=4246KiB/s (4348kB/s), 1083KiB/s-1516KiB/s (1109kB/s-1553kB/s), io=28.0MiB (29.4MB), run=3772-6753msec 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=178622: Tue Aug 25 20:14:38 2026 read: IOPS=1, BW=5486KiB/s (5617kB/s)(12.0MiB/2240msec) clat (msec): min=255, max=1211, avg=743.38, stdev=478.28 lat (msec): min=255, max=1211, avg=743.38, stdev=478.28 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7772, max= 8159, per=100.00%, avg=7965.50, stdev=273.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.12%, ctx=75, majf=0, minf=8 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=178623: Tue Aug 25 20:14:38 2026 read: IOPS=0, BW=3105KiB/s (3180kB/s)(4096KiB/1319msec) clat (nsec): min=341974k, max=341974k, avg=341973528.00, stdev= 0.00 lat (nsec): min=341976k, max=341976k, avg=341975968.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 6872, max= 6872, per=93.96%, avg=6872.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=6211KiB/s (6360kB/s)(8192KiB/1319msec); 0 zone resets clat (msec): min=270, max=660, avg=465.62, stdev=275.38 lat (msec): min=271, max=660, avg=465.95, stdev=275.35 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 8159, max= 8159, per=58.24%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=9.26%, ctx=62, 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=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=178624: Tue Aug 25 20:14:38 2026 write: IOPS=2, BW=8891KiB/s (9105kB/s)(12.0MiB/1382msec); 0 zone resets clat (msec): min=185, max=891, avg=425.48, stdev=403.98 lat (msec): min=185, max=892, avg=425.89, stdev=403.89 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min=12172, max=12172, per=86.89%, avg=12172.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 1000=33.33% cpu : usr=0.00%, sys=9.78%, ctx=55, majf=0, minf=8 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=178625: Tue Aug 25 20:14:38 2026 write: IOPS=1, BW=5254KiB/s (5380kB/s)(12.0MiB/2339msec); 0 zone resets clat (msec): min=284, max=1581, avg=772.54, stdev=705.71 lat (msec): min=294, max=1582, avg=776.71, stdev=702.02 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7098, max= 8159, per=54.45%, avg=7628.50, stdev=750.24, 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=0.00%, sys=5.77%, ctx=58, majf=0, minf=9 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=7314KiB/s (7490kB/s), 3105KiB/s-5486KiB/s (3180kB/s-5617kB/s), io=16.0MiB (16.8MB), run=1319-2240msec WRITE: bw=13.7MiB/s (14.3MB/s), 5254KiB/s-8891KiB/s (5380kB/s-9105kB/s), io=32.0MiB (33.6MB), run=1319-2339msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178627: Tue Aug 25 20:14:39 2026 read: IOPS=1, BW=5278KiB/s (5405kB/s)(12.0MiB/2328msec) clat (msec): min=731, max=839, avg=771.57, stdev=59.24 lat (msec): min=731, max=839, avg=771.57, stdev=59.24 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=16.37%, ctx=361, majf=0, minf=9 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=178628: Tue Aug 25 20:14:39 2026 read: IOPS=0, BW=1592KiB/s (1630kB/s)(4096KiB/2573msec) clat (nsec): min=776817k, max=776817k, avg=776816572.00, stdev= 0.00 lat (nsec): min=776818k, max=776818k, avg=776818188.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3184KiB/s (3260kB/s)(8192KiB/2573msec); 0 zone resets clat (msec): min=500, max=1288, avg=894.22, stdev=557.40 lat (msec): min=500, max=1292, avg=896.75, stdev=560.38 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8192, max= 8192, per=65.53%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.69%, ctx=84, 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=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=178629: Tue Aug 25 20:14:39 2026 write: IOPS=1, BW=4688KiB/s (4801kB/s)(12.0MiB/2621msec); 0 zone resets clat (msec): min=440, max=1100, avg=872.29, stdev=373.92 lat (msec): min=441, max=1101, avg=872.93, stdev=374.21 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8110, max= 8192, per=65.20%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.92%, ctx=54, majf=0, minf=9 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=178630: Tue Aug 25 20:14:39 2026 write: IOPS=1, BW=5456KiB/s (5587kB/s)(12.0MiB/2252msec); 0 zone resets clat (msec): min=381, max=1050, avg=749.67, stdev=339.93 lat (msec): min=381, max=1050, avg=750.01, stdev=339.91 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 8110, max= 8192, per=65.20%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.60%, ctx=72, 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 Run status group 0 (all jobs): READ: bw=6368KiB/s (6520kB/s), 1592KiB/s-5278KiB/s (1630kB/s-5405kB/s), io=16.0MiB (16.8MB), run=2328-2573msec WRITE: bw=12.2MiB/s (12.8MB/s), 3184KiB/s-5456KiB/s (3260kB/s-5587kB/s), io=32.0MiB (33.6MB), run=2252-2621msec