== sanity test 398b: DIO and buffer IO race ============== 15:35:54 (1775763354) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.21984 s, 8.1 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=147311: Thu Apr 9 15:38:31 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5992KiB/136632msec) clat (usec): min=33, max=1058.3k, avg=45971.29, stdev=45905.71 lat (usec): min=34, max=1058.4k, avg=45984.11, stdev=45912.74 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 76], 10.00th=[ 14091], | 20.00th=[ 22414], 30.00th=[ 28443], 40.00th=[ 33162], | 50.00th=[ 38011], 60.00th=[ 45351], 70.00th=[ 53740], | 80.00th=[ 65274], 90.00th=[ 83362], 95.00th=[ 99091], | 99.00th=[ 149947], 99.50th=[ 231736], 99.90th=[ 658506], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 5, max= 118, per=25.22%, avg=43.88, stdev=19.43, samples=266 iops : min= 1, max= 29, avg=10.29, stdev= 4.88, samples=266 write: IOPS=11, BW=46.1KiB/s (47.2kB/s)(6296KiB/136632msec); 0 zone resets clat (usec): min=1157, max=433797, avg=42696.47, stdev=43633.69 lat (usec): min=1157, max=433799, avg=42702.78, stdev=43631.04 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1598], 10.00th=[ 2573], 20.00th=[ 6390], | 30.00th=[ 11469], 40.00th=[ 21365], 50.00th=[ 32113], 60.00th=[ 42730], | 70.00th=[ 55837], 80.00th=[ 71828], 90.00th=[ 95945], 95.00th=[120062], | 99.00th=[177210], 99.50th=[225444], 99.90th=[400557], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 7, max= 110, per=25.48%, avg=46.38, stdev=20.00, samples=264 iops : min= 1, max= 27, avg=10.93, stdev= 5.03, samples=264 lat (usec) : 50=0.29%, 100=2.93%, 250=0.46%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=4.20%, 4=3.35%, 10=7.06%, 20=9.31%, 50=37.73% lat (msec) : 100=27.70%, 250=6.32%, 500=0.39%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.59%, ctx=6866, 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=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=147312: Thu Apr 9 15:38:31 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5940KiB/137199msec) clat (usec): min=36, max=325005, avg=45656.91, stdev=31393.79 lat (usec): min=37, max=325006, avg=45659.01, stdev=31393.76 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 86], 10.00th=[ 16909], 20.00th=[ 23200], | 30.00th=[ 28705], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 54264], 80.00th=[ 65274], 90.00th=[ 83362], 95.00th=[ 99091], | 99.00th=[152044], 99.50th=[204473], 99.90th=[250610], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 5, max= 110, per=24.74%, avg=43.05, stdev=17.91, samples=267 iops : min= 1, max= 27, avg=10.09, stdev= 4.53, samples=267 write: IOPS=11, BW=46.3KiB/s (47.4kB/s)(6348KiB/137199msec); 0 zone resets clat (usec): min=1210, max=1190.7k, avg=43361.99, stdev=53608.16 lat (usec): min=1211, max=1190.7k, avg=43368.97, stdev=53608.02 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1663], 10.00th=[ 2802], | 20.00th=[ 6128], 30.00th=[ 11600], 40.00th=[ 21103], | 50.00th=[ 31851], 60.00th=[ 42206], 70.00th=[ 55313], | 80.00th=[ 71828], 90.00th=[ 94897], 95.00th=[ 120062], | 99.00th=[ 210764], 99.50th=[ 274727], 99.90th=[ 526386], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 5, max= 111, per=25.36%, avg=46.15, stdev=19.45, samples=266 iops : min= 1, max= 27, avg=10.86, stdev= 4.88, samples=266 lat (usec) : 50=0.23%, 100=2.44%, 250=0.33%, 500=0.10%, 750=0.07% lat (msec) : 2=4.17%, 4=3.16%, 10=7.10%, 20=9.64%, 50=37.86% lat (msec) : 100=28.09%, 250=6.38%, 500=0.39%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.62%, ctx=6971, 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=147315: Thu Apr 9 15:38:31 2026 read: IOPS=11, BW=44.1KiB/s (45.1kB/s)(6028KiB/136801msec) clat (usec): min=27, max=1212.2k, avg=46011.43, stdev=44729.58 lat (usec): min=28, max=1212.2k, avg=46013.81, stdev=44729.41 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 81], 10.00th=[ 15008], | 20.00th=[ 22676], 30.00th=[ 28967], 40.00th=[ 34341], | 50.00th=[ 39584], 60.00th=[ 46400], 70.00th=[ 53740], | 80.00th=[ 64750], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[ 152044], 99.50th=[ 198181], 99.90th=[ 509608], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 103, per=25.22%, avg=43.89, stdev=19.39, samples=267 iops : min= 1, max= 25, avg=10.30, stdev= 4.89, samples=267 write: IOPS=11, BW=45.8KiB/s (46.9kB/s)(6260KiB/136801msec); 0 zone resets clat (usec): min=1192, max=376372, avg=42842.61, stdev=43935.39 lat (usec): min=1194, max=376373, avg=42850.36, stdev=43933.50 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1647], 10.00th=[ 2671], 20.00th=[ 5800], | 30.00th=[ 11469], 40.00th=[ 21627], 50.00th=[ 31851], 60.00th=[ 41681], | 70.00th=[ 54789], 80.00th=[ 71828], 90.00th=[ 96994], 95.00th=[122160], | 99.00th=[191890], 99.50th=[267387], 99.90th=[346031], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 126, per=25.06%, avg=45.61, stdev=19.44, samples=267 iops : min= 1, max= 31, avg=10.73, stdev= 4.88, samples=267 lat (usec) : 50=0.13%, 100=3.12%, 250=0.39%, 750=0.07%, 1000=0.03% lat (msec) : 2=4.00%, 4=3.22%, 10=7.29%, 20=8.82%, 50=38.96% lat (msec) : 100=27.28%, 250=6.25%, 500=0.36%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.61%, ctx=6892, 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=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=147317: Thu Apr 9 15:38:31 2026 read: IOPS=10, BW=43.9KiB/s (44.0kB/s)(6052KiB/137799msec) clat (usec): min=33, max=1246.5k, avg=46171.09, stdev=47559.18 lat (usec): min=34, max=1246.5k, avg=46175.86, stdev=47561.09 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 80], 10.00th=[ 13829], | 20.00th=[ 22152], 30.00th=[ 27395], 40.00th=[ 32637], | 50.00th=[ 38011], 60.00th=[ 44827], 70.00th=[ 53216], | 80.00th=[ 63701], 90.00th=[ 81265], 95.00th=[ 107480], | 99.00th=[ 175113], 99.50th=[ 242222], 99.90th=[ 387974], | 99.95th=[1249903], 99.99th=[1249903] bw ( KiB/s): min= 5, max= 95, per=25.18%, avg=43.81, stdev=19.26, samples=267 iops : min= 1, max= 23, avg=10.28, stdev= 4.86, samples=267 write: IOPS=11, BW=45.3KiB/s (46.3kB/s)(6236KiB/137799msec); 0 zone resets clat (usec): min=1243, max=393522, avg=43258.51, stdev=43760.72 lat (usec): min=1245, max=393524, avg=43264.42, stdev=43762.13 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1647], 10.00th=[ 2835], 20.00th=[ 6456], | 30.00th=[ 11600], 40.00th=[ 22152], 50.00th=[ 32375], 60.00th=[ 43779], | 70.00th=[ 54789], 80.00th=[ 72877], 90.00th=[ 99091], 95.00th=[121111], | 99.00th=[189793], 99.50th=[261096], 99.90th=[350225], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 7, max= 95, per=24.65%, avg=44.87, stdev=19.20, samples=269 iops : min= 1, max= 23, avg=10.54, stdev= 4.83, samples=269 lat (usec) : 50=0.20%, 100=2.86%, 250=0.75%, 500=0.20%, 1000=0.03% lat (msec) : 2=4.00%, 4=2.80%, 10=7.39%, 20=8.69%, 50=38.80% lat (msec) : 100=26.56%, 250=7.19%, 500=0.49%, 2000=0.03% cpu : usr=0.10%, sys=5.65%, ctx=6894, 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=174KiB/s (178kB/s), 43.3KiB/s-44.1KiB/s (44.3kB/s-45.1kB/s), io=23.4MiB (24.6MB), run=136632-137799msec WRITE: bw=182KiB/s (187kB/s), 45.3KiB/s-46.3KiB/s (46.3kB/s-47.4kB/s), io=24.6MiB (25.7MB), run=136632-137799msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147313: Thu Apr 9 15:40:36 2026 read: IOPS=5, BW=22.8KiB/s (23.4kB/s)(5992KiB/262752msec) clat (msec): min=5, max=1125, avg=34.89, stdev=45.73 lat (msec): min=5, max=1125, avg=34.89, stdev=45.73 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 44], 90.00th=[ 77], 95.00th=[ 108], | 99.00th=[ 199], 99.50th=[ 222], 99.90th=[ 326], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 88, per=28.12%, avg=25.59, stdev=17.56, samples=453 iops : min= 1, max= 22, avg= 5.77, stdev= 4.41, samples=453 write: IOPS=5, BW=23.0KiB/s (24.5kB/s)(6296KiB/262752msec); 0 zone resets clat (msec): min=40, max=596, avg=133.44, stdev=70.68 lat (msec): min=40, max=596, avg=133.45, stdev=70.68 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 70], 20.00th=[ 83], | 30.00th=[ 93], 40.00th=[ 102], 50.00th=[ 113], 60.00th=[ 127], | 70.00th=[ 144], 80.00th=[ 171], 90.00th=[ 218], 95.00th=[ 288], | 99.00th=[ 376], 99.50th=[ 418], 99.90th=[ 592], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 7, max= 48, per=25.19%, avg=23.93, stdev=10.99, samples=507 iops : min= 1, max= 12, avg= 5.35, stdev= 2.80, samples=507 lat (msec) : 10=2.47%, 20=19.34%, 50=18.95%, 100=24.97%, 250=30.31% lat (msec) : 500=3.78%, 750=0.16%, 2000=0.03% cpu : usr=0.05%, sys=1.46%, ctx=5485, majf=0, minf=16 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=147314: Thu Apr 9 15:40:36 2026 read: IOPS=5, BW=22.6KiB/s (23.2kB/s)(5940KiB/262430msec) clat (msec): min=6, max=1269, avg=34.34, stdev=47.08 lat (msec): min=6, max=1269, avg=34.35, stdev=47.08 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 46], 90.00th=[ 74], 95.00th=[ 100], | 99.00th=[ 176], 99.50th=[ 215], 99.90th=[ 468], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 102, per=27.93%, avg=25.42, stdev=17.42, samples=451 iops : min= 1, max= 25, avg= 5.73, stdev= 4.38, samples=451 write: IOPS=6, BW=24.2KiB/s (24.8kB/s)(6348KiB/262430msec); 0 zone resets clat (msec): min=35, max=663, avg=133.00, stdev=69.37 lat (msec): min=35, max=663, avg=133.01, stdev=69.38 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 85], | 30.00th=[ 94], 40.00th=[ 102], 50.00th=[ 114], 60.00th=[ 126], | 70.00th=[ 146], 80.00th=[ 174], 90.00th=[ 222], 95.00th=[ 268], | 99.00th=[ 376], 99.50th=[ 451], 99.90th=[ 651], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 48, per=25.29%, avg=24.03, stdev=11.01, samples=509 iops : min= 1, max= 12, avg= 5.37, stdev= 2.81, samples=509 lat (msec) : 10=2.51%, 20=19.66%, 50=18.20%, 100=25.07%, 250=31.09% lat (msec) : 500=3.26%, 750=0.20%, 2000=0.03% cpu : usr=0.05%, sys=1.47%, ctx=5334, 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=147316: Thu Apr 9 15:40:36 2026 read: IOPS=5, BW=22.0KiB/s (23.5kB/s)(6028KiB/262286msec) clat (msec): min=5, max=486, avg=35.66, stdev=39.65 lat (msec): min=5, max=486, avg=35.67, stdev=39.67 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 47], 90.00th=[ 81], 95.00th=[ 107], | 99.00th=[ 192], 99.50th=[ 255], 99.90th=[ 481], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 7, max= 103, per=27.97%, avg=25.46, stdev=17.25, samples=458 iops : min= 1, max= 25, avg= 5.73, stdev= 4.32, samples=458 write: IOPS=5, BW=23.9KiB/s (24.4kB/s)(6260KiB/262286msec); 0 zone resets clat (msec): min=39, max=1438, avg=133.01, stdev=80.21 lat (msec): min=39, max=1438, avg=133.02, stdev=80.21 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 82], | 30.00th=[ 91], 40.00th=[ 101], 50.00th=[ 112], 60.00th=[ 125], | 70.00th=[ 144], 80.00th=[ 171], 90.00th=[ 222], 95.00th=[ 271], | 99.00th=[ 426], 99.50th=[ 550], 99.90th=[ 651], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 56, per=25.25%, avg=23.99, stdev=11.47, samples=503 iops : min= 1, max= 14, avg= 5.36, stdev= 2.93, samples=503 lat (msec) : 10=2.28%, 20=19.11%, 50=18.98%, 100=26.24%, 250=29.62% lat (msec) : 500=3.45%, 750=0.29%, 2000=0.03% cpu : usr=0.04%, sys=1.51%, ctx=5354, 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=147318: Thu Apr 9 15:40:36 2026 read: IOPS=5, BW=23.0KiB/s (23.6kB/s)(6052KiB/262997msec) clat (msec): min=5, max=487, avg=36.06, stdev=40.24 lat (msec): min=5, max=487, avg=36.07, stdev=40.24 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 47], 90.00th=[ 81], 95.00th=[ 113], | 99.00th=[ 192], 99.50th=[ 264], 99.90th=[ 368], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 7, max= 120, per=28.84%, avg=26.24, stdev=17.72, samples=445 iops : min= 1, max= 30, avg= 5.94, stdev= 4.49, samples=445 write: IOPS=5, BW=23.7KiB/s (24.3kB/s)(6236KiB/262997msec); 0 zone resets clat (msec): min=39, max=1440, avg=133.46, stdev=76.25 lat (msec): min=39, max=1440, avg=133.46, stdev=76.25 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 82], | 30.00th=[ 93], 40.00th=[ 103], 50.00th=[ 114], 60.00th=[ 128], | 70.00th=[ 146], 80.00th=[ 176], 90.00th=[ 222], 95.00th=[ 262], | 99.00th=[ 384], 99.50th=[ 439], 99.90th=[ 659], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 56, per=24.78%, avg=23.54, stdev=11.12, samples=509 iops : min= 1, max= 14, avg= 5.25, stdev= 2.83, samples=509 lat (msec) : 10=2.44%, 20=19.30%, 50=18.88%, 100=24.64%, 250=31.35% lat (msec) : 500=3.22%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.46%, ctx=5406, majf=0, minf=16 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=91.3KiB/s (93.5kB/s), 22.6KiB/s-23.0KiB/s (23.2kB/s-23.6kB/s), io=23.4MiB (24.6MB), run=262286-262997msec WRITE: bw=95.6KiB/s (97.9kB/s), 23.7KiB/s-24.2KiB/s (24.3kB/s-24.8kB/s), io=24.6MiB (25.7MB), run=262286-262997msec 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=147371: Thu Apr 9 15:41:18 2026 read: IOPS=11, BW=187KiB/s (191kB/s)(5920KiB/31741msec) clat (usec): min=43, max=386309, avg=46592.70, stdev=39277.03 lat (usec): min=44, max=386311, avg=46594.43, stdev=39277.13 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 71], 10.00th=[ 81], 20.00th=[ 23462], | 30.00th=[ 30278], 40.00th=[ 36963], 50.00th=[ 41157], 60.00th=[ 48497], | 70.00th=[ 56361], 80.00th=[ 66323], 90.00th=[ 80217], 95.00th=[104334], | 99.00th=[231736], 99.50th=[341836], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 31, max= 319, per=24.73%, avg=183.53, stdev=76.84, samples=62 iops : min= 1, max= 19, avg=10.69, stdev= 4.87, samples=62 write: IOPS=12, BW=201KiB/s (205kB/s)(6368KiB/31741msec); 0 zone resets clat (usec): min=1570, max=406345, avg=35930.74, stdev=42658.18 lat (usec): min=1572, max=406347, avg=35939.60, stdev=42654.37 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2245], 10.00th=[ 3490], 20.00th=[ 6063], | 30.00th=[ 8586], 40.00th=[ 12518], 50.00th=[ 20055], 60.00th=[ 28443], | 70.00th=[ 43779], 80.00th=[ 62653], 90.00th=[ 85459], 95.00th=[122160], | 99.00th=[187696], 99.50th=[204473], 99.90th=[404751], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 61, max= 542, per=26.31%, avg=205.50, stdev=90.51, samples=60 iops : min= 3, max= 33, avg=12.08, stdev= 5.69, samples=60 lat (usec) : 50=0.39%, 100=5.73%, 250=0.78% lat (msec) : 2=1.43%, 4=5.21%, 10=10.81%, 20=9.11%, 50=34.24% lat (msec) : 100=26.43%, 250=5.47%, 500=0.39% cpu : usr=0.10%, sys=6.12%, ctx=1608, majf=0, minf=16 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=147372: Thu Apr 9 15:41:18 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(5744KiB/31596msec) clat (usec): min=38, max=586681, avg=47715.78, stdev=42831.75 lat (usec): min=38, max=586682, avg=47717.44, stdev=42831.70 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 72], 10.00th=[ 155], 20.00th=[ 24511], | 30.00th=[ 31327], 40.00th=[ 36439], 50.00th=[ 41681], 60.00th=[ 48497], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 82314], 95.00th=[103285], | 99.00th=[154141], 99.50th=[258999], 99.90th=[583009], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 62, max= 351, per=25.27%, avg=187.47, stdev=64.20, samples=60 iops : min= 3, max= 21, avg=10.95, stdev= 4.05, samples=60 write: IOPS=12, BW=207KiB/s (212kB/s)(6544KiB/31596msec); 0 zone resets clat (usec): min=1592, max=204837, avg=35082.78, stdev=37162.10 lat (usec): min=1595, max=204840, avg=35114.37, stdev=37144.07 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2212], 10.00th=[ 3621], 20.00th=[ 6128], | 30.00th=[ 9241], 40.00th=[ 13566], 50.00th=[ 21365], 60.00th=[ 28705], | 70.00th=[ 44827], 80.00th=[ 60031], 90.00th=[ 89654], 95.00th=[108528], | 99.00th=[168821], 99.50th=[187696], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 509, per=26.48%, avg=206.79, stdev=94.39, samples=62 iops : min= 1, max= 31, avg=12.16, stdev= 5.93, samples=62 lat (usec) : 50=0.26%, 100=4.04%, 250=0.78%, 750=0.13% lat (msec) : 2=1.95%, 4=4.43%, 10=11.59%, 20=10.03%, 50=35.55% lat (msec) : 100=24.87%, 250=6.12%, 500=0.13%, 750=0.13% cpu : usr=0.13%, sys=6.36%, ctx=1610, 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=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=147373: Thu Apr 9 15:41:18 2026 read: IOPS=12, BW=194KiB/s (199kB/s)(6256KiB/32249msec) clat (usec): min=42, max=354031, avg=47265.65, stdev=39897.66 lat (usec): min=42, max=354033, avg=47272.00, stdev=39895.35 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 80], 20.00th=[ 21103], | 30.00th=[ 27657], 40.00th=[ 35390], 50.00th=[ 42206], 60.00th=[ 49021], | 70.00th=[ 58983], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[110625], | 99.00th=[202376], 99.50th=[274727], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 31, max= 447, per=26.23%, avg=194.60, stdev=82.56, samples=63 iops : min= 1, max= 27, avg=11.40, stdev= 5.21, samples=63 write: IOPS=11, BW=187KiB/s (192kB/s)(6032KiB/32249msec); 0 zone resets clat (usec): min=1612, max=303286, avg=35955.19, stdev=39109.26 lat (usec): min=1615, max=303286, avg=35963.48, stdev=39111.54 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2147], 10.00th=[ 3589], 20.00th=[ 5932], | 30.00th=[ 9110], 40.00th=[ 13566], 50.00th=[ 21103], 60.00th=[ 32637], | 70.00th=[ 44827], 80.00th=[ 64750], 90.00th=[ 87557], 95.00th=[109577], | 99.00th=[173016], 99.50th=[196084], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 31, max= 447, per=23.55%, avg=183.95, stdev=83.06, samples=63 iops : min= 1, max= 27, avg=10.73, stdev= 5.22, samples=63 lat (usec) : 50=0.26%, 100=6.25%, 250=0.65%, 500=0.26%, 750=0.39% lat (usec) : 1000=0.13% lat (msec) : 2=1.56%, 4=4.30%, 10=10.68%, 20=8.46%, 50=34.77% lat (msec) : 100=25.13%, 250=6.77%, 500=0.39% cpu : usr=0.09%, sys=6.19%, ctx=1592, majf=0, minf=16 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=147374: Thu Apr 9 15:41:18 2026 read: IOPS=12, BW=198KiB/s (203kB/s)(6032KiB/30492msec) clat (usec): min=37, max=294494, avg=45386.98, stdev=38654.53 lat (usec): min=37, max=294495, avg=45388.60, stdev=38654.45 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 64], 10.00th=[ 73], 20.00th=[ 18220], | 30.00th=[ 26870], 40.00th=[ 32900], 50.00th=[ 38536], 60.00th=[ 46924], | 70.00th=[ 54264], 80.00th=[ 71828], 90.00th=[ 90702], 95.00th=[105382], | 99.00th=[189793], 99.50th=[238027], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 32, max= 411, per=27.52%, avg=204.22, stdev=74.64, samples=58 iops : min= 2, max= 25, avg=12.02, stdev= 4.64, samples=58 write: IOPS=12, BW=205KiB/s (210kB/s)(6256KiB/30492msec); 0 zone resets clat (usec): min=1558, max=467025, avg=33895.05, stdev=41615.97 lat (usec): min=1559, max=467030, avg=33899.00, stdev=41616.38 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2073], 10.00th=[ 3064], 20.00th=[ 5014], | 30.00th=[ 9241], 40.00th=[ 13304], 50.00th=[ 19268], 60.00th=[ 29230], | 70.00th=[ 41681], 80.00th=[ 53216], 90.00th=[ 86508], 95.00th=[115868], | 99.00th=[152044], 99.50th=[229639], 99.90th=[467665], 99.95th=[467665], | 99.99th=[467665] bw ( KiB/s): min= 31, max= 477, per=26.33%, avg=205.60, stdev=97.02, samples=60 iops : min= 1, max= 29, avg=12.08, stdev= 6.06, samples=60 lat (usec) : 50=0.52%, 100=7.55%, 250=0.78%, 500=0.13%, 1000=0.13% lat (msec) : 2=2.08%, 4=6.51%, 10=8.46%, 20=10.16%, 50=35.29% lat (msec) : 100=21.35%, 250=6.77%, 500=0.26% cpu : usr=0.11%, sys=6.48%, ctx=1558, 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=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=743KiB/s (761kB/s), 182KiB/s-198KiB/s (186kB/s-203kB/s), io=23.4MiB (24.5MB), run=30492-32249msec WRITE: bw=781KiB/s (800kB/s), 187KiB/s-207KiB/s (192kB/s-212kB/s), io=24.6MiB (25.8MB), run=30492-32249msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147376: Thu Apr 9 15:42:00 2026 read: IOPS=5, BW=80.9KiB/s (82.8kB/s)(5920KiB/73199msec) clat (msec): min=8, max=230, avg=40.49, stdev=35.52 lat (msec): min=8, max=230, avg=40.49, stdev=35.52 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 74], 95.00th=[ 116], | 99.00th=[ 190], 99.50th=[ 218], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 30, max= 288, per=28.78%, avg=92.68, stdev=58.76, samples=125 iops : min= 1, max= 18, avg= 4.98, stdev= 3.72, samples=125 write: IOPS=5, BW=86.0KiB/s (89.1kB/s)(6368KiB/73199msec); 0 zone resets clat (msec): min=38, max=667, avg=146.03, stdev=76.12 lat (msec): min=38, max=667, avg=146.03, stdev=76.12 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 75], 20.00th=[ 90], | 30.00th=[ 101], 40.00th=[ 109], 50.00th=[ 125], 60.00th=[ 142], | 70.00th=[ 167], 80.00th=[ 192], 90.00th=[ 251], 95.00th=[ 296], | 99.00th=[ 422], 99.50th=[ 481], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 22, max= 191, per=25.93%, avg=87.89, stdev=40.28, samples=142 iops : min= 1, max= 11, avg= 4.69, stdev= 2.54, samples=142 lat (msec) : 10=0.52%, 20=11.98%, 50=25.00%, 100=22.79%, 250=34.51% lat (msec) : 500=5.08%, 750=0.13% cpu : usr=0.06%, sys=1.63%, ctx=1398, 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=147377: Thu Apr 9 15:42:00 2026 read: IOPS=4, BW=77.4KiB/s (79.3kB/s)(5744KiB/74210msec) clat (msec): min=8, max=259, avg=43.27, stdev=43.45 lat (msec): min=8, max=259, avg=43.27, stdev=43.45 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 58], 90.00th=[ 104], 95.00th=[ 153], | 99.00th=[ 222], 99.50th=[ 259], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 22, max= 255, per=28.40%, avg=91.46, stdev=57.35, samples=123 iops : min= 1, max= 15, avg= 4.90, stdev= 3.61, samples=123 write: IOPS=5, BW=88.2KiB/s (90.3kB/s)(6544KiB/74210msec); 0 zone resets clat (msec): min=41, max=667, avg=143.20, stdev=73.47 lat (msec): min=41, max=667, avg=143.20, stdev=73.47 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 75], 20.00th=[ 85], | 30.00th=[ 96], 40.00th=[ 108], 50.00th=[ 125], 60.00th=[ 140], | 70.00th=[ 163], 80.00th=[ 194], 90.00th=[ 236], 95.00th=[ 279], | 99.00th=[ 372], 99.50th=[ 397], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 30, max= 191, per=26.45%, avg=89.65, stdev=40.44, samples=143 iops : min= 1, max= 11, avg= 4.80, stdev= 2.54, samples=143 lat (msec) : 10=1.17%, 20=13.54%, 50=21.74%, 100=22.92%, 250=36.07% lat (msec) : 500=4.43%, 750=0.13% cpu : usr=0.05%, sys=1.55%, ctx=1495, 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=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=147378: Thu Apr 9 15:42:00 2026 read: IOPS=5, BW=87.1KiB/s (89.2kB/s)(6256KiB/71854msec) clat (msec): min=7, max=252, avg=39.14, stdev=35.96 lat (msec): min=7, max=252, avg=39.14, stdev=35.96 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 24], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 81], 95.00th=[ 121], | 99.00th=[ 194], 99.50th=[ 209], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 23, max= 288, per=30.66%, avg=98.72, stdev=64.98, samples=125 iops : min= 1, max= 18, avg= 5.34, stdev= 4.12, samples=125 write: IOPS=5, BW=83.9KiB/s (85.0kB/s)(6032KiB/71854msec); 0 zone resets clat (msec): min=51, max=588, avg=149.77, stdev=77.96 lat (msec): min=51, max=588, avg=149.78, stdev=77.97 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 65], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 104], 40.00th=[ 116], 50.00th=[ 129], 60.00th=[ 146], | 70.00th=[ 167], 80.00th=[ 203], 90.00th=[ 255], 95.00th=[ 292], | 99.00th=[ 401], 99.50th=[ 575], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 30, max= 191, per=25.04%, avg=84.90, stdev=38.62, samples=139 iops : min= 1, max= 11, avg= 4.50, stdev= 2.45, samples=139 lat (msec) : 10=0.52%, 20=12.76%, 50=27.73%, 100=20.05%, 250=33.59% lat (msec) : 500=5.08%, 750=0.26% cpu : usr=0.03%, sys=1.62%, ctx=1418, 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=147379: Thu Apr 9 15:42:00 2026 read: IOPS=5, BW=82.4KiB/s (84.4kB/s)(6032KiB/73167msec) clat (msec): min=7, max=311, avg=40.49, stdev=37.31 lat (msec): min=7, max=311, avg=40.49, stdev=37.31 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 85], 95.00th=[ 114], | 99.00th=[ 190], 99.50th=[ 296], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 287, per=29.71%, avg=95.65, stdev=61.10, samples=123 iops : min= 1, max= 17, avg= 5.19, stdev= 3.83, samples=123 write: IOPS=5, BW=85.5KiB/s (87.6kB/s)(6256KiB/73167msec); 0 zone resets clat (msec): min=48, max=569, avg=147.85, stdev=76.88 lat (msec): min=48, max=569, avg=147.86, stdev=76.88 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 77], 20.00th=[ 89], | 30.00th=[ 100], 40.00th=[ 111], 50.00th=[ 126], 60.00th=[ 142], | 70.00th=[ 169], 80.00th=[ 199], 90.00th=[ 251], 95.00th=[ 300], | 99.00th=[ 401], 99.50th=[ 531], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 30, max= 190, per=25.72%, avg=87.18, stdev=40.23, samples=141 iops : min= 1, max= 11, avg= 4.64, stdev= 2.53, samples=141 lat (msec) : 10=1.30%, 20=12.24%, 50=24.09%, 100=24.74%, 250=32.29% lat (msec) : 500=5.08%, 750=0.26% cpu : usr=0.04%, sys=1.47%, ctx=1357, 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=323KiB/s (331kB/s), 77.4KiB/s-87.1KiB/s (79.3kB/s-89.2kB/s), io=23.4MiB (24.5MB), run=71854-74210msec WRITE: bw=340KiB/s (348kB/s), 83.9KiB/s-88.2KiB/s (85.0kB/s-90.3kB/s), io=24.6MiB (25.8MB), run=71854-74210msec 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=147402: Thu Apr 9 15:42:16 2026 read: IOPS=1, BW=1989KiB/s (2037kB/s)(7168KiB/3604msec) clat (msec): min=119, max=362, avg=229.83, stdev=86.88 lat (msec): min=119, max=362, avg=229.83, stdev=86.88 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 150], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 203], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 305], 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= 1988, max= 4112, per=65.61%, avg=2532.50, stdev=1053.08, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1421KiB/s (1455kB/s)(5120KiB/3604msec); 0 zone resets clat (msec): min=179, max=540, avg=397.97, stdev=165.38 lat (msec): min=179, max=540, avg=398.71, stdev=165.87 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1928, max= 2015, per=36.62%, avg=1978.75, stdev=36.53, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=41.67%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=14.18%, ctx=183, 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=147403: Thu Apr 9 15:42:16 2026 read: IOPS=0, BW=386KiB/s (395kB/s)(2048KiB/5305msec) clat (msec): min=185, max=481, avg=333.22, stdev=209.10 lat (msec): min=185, max=481, avg=333.22, stdev=209.10 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 2007, max= 2043, per=52.46%, avg=2025.00, stdev=25.46, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1930KiB/s (1977kB/s)(10.0MiB/5305msec); 0 zone resets clat (msec): min=176, max=1046, avg=463.37, stdev=266.37 lat (msec): min=176, max=1046, avg=463.60, stdev=266.39 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 218], | 30.00th=[ 313], 40.00th=[ 317], 50.00th=[ 388], 60.00th=[ 409], | 70.00th=[ 426], 80.00th=[ 575], 90.00th=[ 760], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1924, max= 4087, per=41.89%, avg=2264.00, stdev=737.60, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.04%, sys=10.88%, ctx=178, 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=147404: Thu Apr 9 15:42:16 2026 read: IOPS=1, BW=1608KiB/s (1646kB/s)(6144KiB/3822msec) clat (usec): min=640, max=485784, avg=213826.37, stdev=193766.47 lat (usec): min=641, max=485786, avg=213827.73, stdev=193766.35 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 914], | 30.00th=[ 914], 40.00th=[168821], 50.00th=[168821], 60.00th=[287310], | 70.00th=[337642], 80.00th=[337642], 90.00th=[484443], 95.00th=[484443], | 99.00th=[484443], 99.50th=[484443], 99.90th=[484443], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 2015, max= 4031, per=86.48%, avg=3338.00, stdev=1146.18, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1608KiB/s (1646kB/s)(6144KiB/3822msec); 0 zone resets clat (msec): min=144, max=728, avg=422.82, stdev=216.51 lat (msec): min=144, max=728, avg=422.90, stdev=216.51 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 472], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1928, max= 2925, per=40.29%, avg=2177.40, stdev=419.76, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=11.04%, ctx=148, 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=147405: Thu Apr 9 15:42:16 2026 read: IOPS=1, BW=1290KiB/s (1321kB/s)(5120KiB/3968msec) clat (usec): min=1625, max=277674, avg=100513.73, stdev=124151.64 lat (usec): min=1626, max=277676, avg=100515.16, stdev=124151.78 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1631], 10.00th=[ 1631], 20.00th=[ 1631], | 30.00th=[ 5080], 40.00th=[ 5080], 50.00th=[ 34341], 60.00th=[ 34341], | 70.00th=[183501], 80.00th=[183501], 90.00th=[278922], 95.00th=[278922], | 99.00th=[278922], 99.50th=[278922], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 1928, max= 5953, per=100.00%, avg=3940.50, stdev=2846.10, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1806KiB/s (1850kB/s)(7168KiB/3968msec); 0 zone resets clat (msec): min=125, max=960, avg=494.79, stdev=315.87 lat (msec): min=125, max=961, avg=494.89, stdev=315.89 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 201], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 451], 60.00th=[ 456], | 70.00th=[ 456], 80.00th=[ 877], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1376, max= 4031, per=42.01%, avg=2270.00, stdev=1019.34, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 2=8.33%, 10=8.33%, 50=8.33%, 250=25.00%, 500=33.33% lat (msec) : 1000=16.67% cpu : usr=0.00%, sys=11.80%, ctx=109, 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=3861KiB/s (3953kB/s), 386KiB/s-1989KiB/s (395kB/s-2037kB/s), io=20.0MiB (20.0MB), run=3604-5305msec WRITE: bw=5405KiB/s (5534kB/s), 1421KiB/s-1930KiB/s (1455kB/s-1977kB/s), io=28.0MiB (29.4MB), run=3604-5305msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147397: Thu Apr 9 15:42:16 2026 read: IOPS=1, BW=1936KiB/s (1983kB/s)(7168KiB/3702msec) clat (msec): min=104, max=335, avg=195.37, stdev=69.86 lat (msec): min=104, max=335, avg=195.37, stdev=69.86 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 176], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 180], 60.00th=[ 184], | 70.00th=[ 184], 80.00th=[ 211], 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= 2011, max= 4087, per=80.99%, avg=2965.75, stdev=1108.71, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1383KiB/s (1416kB/s)(5120KiB/3702msec); 0 zone resets clat (msec): min=234, max=750, avg=438.81, stdev=209.75 lat (msec): min=234, max=750, avg=438.93, stdev=209.74 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1988, max= 4047, per=49.06%, avg=2515.25, stdev=1021.24, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=4.65%, ctx=76, 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=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=147398: Thu Apr 9 15:42:16 2026 read: IOPS=0, BW=366KiB/s (375kB/s)(2048KiB/5592msec) clat (msec): min=180, max=390, avg=285.44, stdev=147.88 lat (msec): min=180, max=390, avg=285.44, stdev=147.88 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1924, max= 1988, per=53.41%, avg=1956.00, stdev=45.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1831KiB/s (1875kB/s)(10.0MiB/5592msec); 0 zone resets clat (msec): min=254, max=867, avg=489.46, stdev=175.18 lat (msec): min=256, max=867, avg=489.82, stdev=174.85 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 284], | 30.00th=[ 376], 40.00th=[ 477], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 502], 80.00th=[ 506], 90.00th=[ 634], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 2011, max= 4031, per=44.49%, avg=2281.12, stdev=707.17, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 250=8.33%, 500=58.33%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=4.65%, ctx=93, 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=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=147399: Thu Apr 9 15:42:16 2026 read: IOPS=1, BW=1143KiB/s (1171kB/s)(6144KiB/5373msec) clat (msec): min=65, max=1053, avg=445.84, stdev=356.33 lat (msec): min=65, max=1053, avg=445.84, stdev=356.33 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 443], | 70.00th=[ 609], 80.00th=[ 609], 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= 2015, max= 2048, per=55.49%, avg=2032.00, stdev=13.08, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=1, BW=1143KiB/s (1171kB/s)(6144KiB/5373msec); 0 zone resets clat (msec): min=229, max=908, avg=441.56, stdev=244.26 lat (msec): min=229, max=908, avg=441.65, stdev=244.25 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 414], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1875, max= 2048, per=38.87%, avg=1993.00, stdev=70.35, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=16.67%, 500=50.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=3.46%, ctx=73, 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=147400: Thu Apr 9 15:42:16 2026 read: IOPS=1, BW=1150KiB/s (1177kB/s)(5120KiB/4454msec) clat (msec): min=72, max=330, avg=216.05, stdev=102.24 lat (msec): min=72, max=330, avg=216.05, stdev=102.24 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 232], 60.00th=[ 232], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 4047, max= 4087, per=100.00%, avg=4067.00, stdev=28.28, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1609KiB/s (1648kB/s)(7168KiB/4454msec); 0 zone resets clat (msec): min=258, max=1115, avg=462.22, stdev=292.46 lat (msec): min=258, max=1115, avg=462.33, stdev=292.46 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 313], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 380], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 401], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1872, max= 4087, per=46.89%, avg=2404.00, stdev=943.06, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=16.67%, 500=66.67%, 2000=8.33% cpu : usr=0.00%, sys=3.10%, ctx=60, 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=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=3662KiB/s (3750kB/s), 366KiB/s-1936KiB/s (375kB/s-1983kB/s), io=20.0MiB (20.0MB), run=3702-5592msec WRITE: bw=5127KiB/s (5250kB/s), 1143KiB/s-1831KiB/s (1171kB/s-1875kB/s), io=28.0MiB (29.4MB), run=3702-5592msec 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=147411: Thu Apr 9 15:42:30 2026 read: IOPS=0, BW=3599KiB/s (3686kB/s)(12.0MiB/3414msec) clat (msec): min=329, max=1493, avg=1074.91, stdev=647.43 lat (msec): min=329, max=1493, avg=1074.91, stdev=647.43 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7728, max= 8143, per=100.00%, avg=7935.50, stdev=293.45, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.22%, ctx=42, 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=147412: Thu Apr 9 15:42:30 2026 read: IOPS=0, BW=2218KiB/s (2271kB/s)(4096KiB/1847msec) clat (nsec): min=375707k, max=375707k, avg=375707459.00, stdev= 0.00 lat (nsec): min=375710k, max=375710k, avg=375709851.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 5665, max= 5665, per=100.00%, avg=5665.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4435KiB/s (4542kB/s)(8192KiB/1847msec); 0 zone resets clat (msec): min=468, max=827, avg=647.93, stdev=253.26 lat (msec): min=471, max=827, avg=649.56, stdev=251.53 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 827], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7816, max= 7816, per=60.57%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.05%, sys=8.99%, ctx=67, 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=147413: Thu Apr 9 15:42:30 2026 write: IOPS=1, BW=6610KiB/s (6769kB/s)(12.0MiB/1859msec); 0 zone resets clat (msec): min=424, max=817, avg=580.25, stdev=208.43 lat (msec): min=424, max=817, avg=580.72, stdev=208.43 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7728, max= 7816, per=60.22%, avg=7772.00, stdev=62.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=5.87%, ctx=67, 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=147414: Thu Apr 9 15:42:30 2026 write: IOPS=1, BW=4840KiB/s (4956kB/s)(12.0MiB/2539msec); 0 zone resets clat (msec): min=393, max=1595, avg=813.17, stdev=678.12 lat (msec): min=394, max=1595, avg=813.53, stdev=678.06 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 1603], 80.00th=[ 1603], 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= 6390, max= 7816, per=55.04%, avg=7103.00, stdev=1008.33, 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=5.40%, ctx=60, 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=4799KiB/s (4914kB/s), 2218KiB/s-3599KiB/s (2271kB/s-3686kB/s), io=16.0MiB (16.8MB), run=1847-3414msec WRITE: bw=12.6MiB/s (13.2MB/s), 4435KiB/s-6610KiB/s (4542kB/s-6769kB/s), io=32.0MiB (33.6MB), run=1847-2539msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147416: Thu Apr 9 15:42:30 2026 read: IOPS=1, BW=4565KiB/s (4674kB/s)(12.0MiB/2692msec) clat (msec): min=735, max=1022, avg=896.80, stdev=146.94 lat (msec): min=735, max=1022, avg=896.80, stdev=146.94 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7787, max= 8110, per=100.00%, avg=7948.50, stdev=228.40, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.79%, ctx=241, 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=147417: Thu Apr 9 15:42:30 2026 read: IOPS=0, BW=1274KiB/s (1305kB/s)(4096KiB/3215msec) clat (nsec): min=899262k, max=899262k, avg=899261703.00, stdev= 0.00 lat (nsec): min=899263k, max=899263k, avg=899262523.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7787, max= 7787, per=100.00%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2548KiB/s (2609kB/s)(8192KiB/3215msec); 0 zone resets clat (msec): min=805, max=1508, avg=1156.75, stdev=497.26 lat (msec): min=805, max=1509, avg=1157.38, stdev=497.50 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 1502], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8031, max= 8031, per=79.73%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.29%, ctx=160, 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=147418: Thu Apr 9 15:42:30 2026 write: IOPS=0, BW=3777KiB/s (3868kB/s)(12.0MiB/3253msec); 0 zone resets clat (msec): min=324, max=1701, avg=1081.62, stdev=698.61 lat (msec): min=325, max=1702, avg=1082.81, stdev=698.95 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8031, max= 8192, per=80.53%, avg=8111.50, stdev=113.84, 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=0.12%, sys=5.29%, ctx=64, 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=147419: Thu Apr 9 15:42:30 2026 write: IOPS=1, BW=4575KiB/s (4685kB/s)(12.0MiB/2686msec); 0 zone resets clat (msec): min=500, max=1353, avg=894.05, stdev=430.09 lat (msec): min=501, max=1353, avg=894.85, stdev=429.90 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7787, max= 8110, per=78.91%, avg=7948.50, stdev=228.40, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.04%, ctx=62, 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=5096KiB/s (5218kB/s), 1274KiB/s-4565KiB/s (1305kB/s-4674kB/s), io=16.0MiB (16.8MB), run=2692-3215msec WRITE: bw=9.84MiB/s (10.3MB/s), 2548KiB/s-4575KiB/s (2609kB/s-4685kB/s), io=32.0MiB (33.6MB), run=2686-3253msec