== sanity test 398b: DIO and buffer IO race ============== 19:25:38 (1786404338) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.55553 s, 7.7 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=144120: Mon Aug 10 19:28:38 2026 read: IOPS=9, BW=39.2KiB/s (40.2kB/s)(5992KiB/152688msec) clat (usec): min=31, max=993910, avg=50476.14, stdev=42992.93 lat (usec): min=31, max=993911, avg=50477.84, stdev=42992.90 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 63], 10.00th=[ 1156], 20.00th=[ 23725], | 30.00th=[ 30802], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 52167], | 70.00th=[ 61604], 80.00th=[ 74974], 90.00th=[ 95945], 95.00th=[113771], | 99.00th=[168821], 99.50th=[191890], 99.90th=[274727], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 5, max= 103, per=26.12%, avg=39.44, stdev=18.08, samples=295 iops : min= 1, max= 25, avg= 9.21, stdev= 4.56, samples=295 write: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6296KiB/152688msec); 0 zone resets clat (usec): min=997, max=517667, avg=48640.85, stdev=50847.58 lat (usec): min=999, max=517671, avg=48643.81, stdev=50846.77 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1418], 10.00th=[ 1811], 20.00th=[ 5145], | 30.00th=[ 10421], 40.00th=[ 22938], 50.00th=[ 35914], 60.00th=[ 49021], | 70.00th=[ 62653], 80.00th=[ 84411], 90.00th=[114820], 95.00th=[143655], | 99.00th=[221250], 99.50th=[246416], 99.90th=[392168], 99.95th=[517997], | 99.99th=[517997] bw ( KiB/s): min= 7, max= 135, per=26.04%, avg=41.14, stdev=19.64, samples=297 iops : min= 1, max= 33, avg= 9.64, stdev= 4.95, samples=297 lat (usec) : 50=0.59%, 100=3.91%, 250=0.20%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.66%, 4=3.42%, 10=6.41%, 20=7.03%, 50=31.61% lat (msec) : 100=29.82%, 250=10.94%, 500=0.20%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.58%, ctx=6435, 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=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=144122: Mon Aug 10 19:28:38 2026 read: IOPS=9, BW=38.4KiB/s (39.4kB/s)(5940KiB/154548msec) clat (usec): min=28, max=1201.4k, avg=51325.89, stdev=48408.84 lat (usec): min=28, max=1201.4k, avg=51331.48, stdev=48412.90 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 10683], | 20.00th=[ 23200], 30.00th=[ 30278], 40.00th=[ 36439], | 50.00th=[ 42206], 60.00th=[ 51119], 70.00th=[ 60031], | 80.00th=[ 74974], 90.00th=[ 98042], 95.00th=[ 119014], | 99.00th=[ 187696], 99.50th=[ 214959], 99.90th=[ 392168], | 99.95th=[1199571], 99.99th=[1199571] bw ( KiB/s): min= 7, max= 119, per=25.61%, avg=38.66, stdev=18.56, samples=298 iops : min= 1, max= 29, avg= 9.02, stdev= 4.71, samples=298 write: IOPS=10, BW=41.1KiB/s (42.1kB/s)(6348KiB/154548msec); 0 zone resets clat (usec): min=1020, max=373137, avg=49000.78, stdev=50735.91 lat (usec): min=1021, max=373139, avg=49005.73, stdev=50739.11 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 1844], 20.00th=[ 5473], | 30.00th=[ 10028], 40.00th=[ 21890], 50.00th=[ 34341], 60.00th=[ 49021], | 70.00th=[ 64750], 80.00th=[ 85459], 90.00th=[119014], 95.00th=[147850], | 99.00th=[212861], 99.50th=[270533], 99.90th=[341836], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 7, max= 116, per=25.86%, avg=40.86, stdev=19.54, samples=302 iops : min= 1, max= 29, avg= 9.56, stdev= 4.94, samples=302 lat (usec) : 50=0.42%, 100=3.81%, 250=0.20%, 1000=0.03% lat (msec) : 2=5.66%, 4=2.70%, 10=7.23%, 20=7.75%, 50=31.97% lat (msec) : 100=28.13%, 250=11.69%, 500=0.39%, 2000=0.03% cpu : usr=0.08%, sys=4.55%, ctx=6619, 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=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=144124: Mon Aug 10 19:28:38 2026 read: IOPS=9, BW=38.3KiB/s (39.2kB/s)(6028KiB/157522msec) clat (usec): min=28, max=365743, avg=49729.60, stdev=39328.41 lat (usec): min=29, max=365744, avg=49736.42, stdev=39331.18 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 98], 20.00th=[ 21890], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 41681], 60.00th=[ 48497], | 70.00th=[ 61080], 80.00th=[ 74974], 90.00th=[ 99091], 95.00th=[121111], | 99.00th=[173016], 99.50th=[221250], 99.90th=[325059], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 94, per=25.59%, avg=38.64, stdev=19.03, samples=303 iops : min= 1, max= 23, avg= 9.01, stdev= 4.81, samples=303 write: IOPS=9, BW=39.7KiB/s (40.7kB/s)(6260KiB/157522msec); 0 zone resets clat (usec): min=1102, max=1406.0k, avg=52463.35, stdev=65180.20 lat (usec): min=1104, max=1406.0k, avg=52467.26, stdev=65180.16 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1434], 10.00th=[ 2245], | 20.00th=[ 5800], 30.00th=[ 11731], 40.00th=[ 25035], | 50.00th=[ 36439], 60.00th=[ 49546], 70.00th=[ 67634], | 80.00th=[ 86508], 90.00th=[ 121111], 95.00th=[ 156238], | 99.00th=[ 240124], 99.50th=[ 312476], 99.90th=[ 517997], | 99.95th=[1400898], 99.99th=[1400898] bw ( KiB/s): min= 7, max= 118, per=25.30%, avg=39.98, stdev=19.31, samples=304 iops : min= 1, max= 29, avg= 9.35, stdev= 4.86, samples=304 lat (usec) : 50=0.46%, 100=4.49%, 250=0.46%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=4.62%, 4=3.48%, 10=6.67%, 20=7.10%, 50=33.17% lat (msec) : 100=26.69%, 250=12.04%, 500=0.55%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.45%, ctx=6491, 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=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=144126: Mon Aug 10 19:28:38 2026 read: IOPS=9, BW=38.3KiB/s (39.2kB/s)(6052KiB/158169msec) clat (usec): min=32, max=387688, avg=50365.24, stdev=39957.29 lat (usec): min=32, max=387691, avg=50372.82, stdev=39956.31 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 88], 20.00th=[ 21627], | 30.00th=[ 28705], 40.00th=[ 35914], 50.00th=[ 42730], 60.00th=[ 51643], | 70.00th=[ 63177], 80.00th=[ 77071], 90.00th=[ 98042], 95.00th=[119014], | 99.00th=[175113], 99.50th=[221250], 99.90th=[358613], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 111, per=25.48%, avg=38.48, stdev=18.03, samples=305 iops : min= 1, max= 27, avg= 8.96, stdev= 4.56, samples=305 write: IOPS=9, BW=39.4KiB/s (40.4kB/s)(6236KiB/158169msec); 0 zone resets clat (usec): min=986, max=1272.8k, avg=52193.23, stdev=59331.87 lat (usec): min=988, max=1272.8k, avg=52197.85, stdev=59332.05 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1418], 10.00th=[ 1893], | 20.00th=[ 5604], 30.00th=[ 11600], 40.00th=[ 25560], | 50.00th=[ 40633], 60.00th=[ 54264], 70.00th=[ 69731], | 80.00th=[ 87557], 90.00th=[ 121111], 95.00th=[ 147850], | 99.00th=[ 217056], 99.50th=[ 256902], 99.90th=[ 421528], | 99.95th=[1266680], 99.99th=[1266680] bw ( KiB/s): min= 7, max= 111, per=24.83%, avg=39.23, stdev=18.90, samples=308 iops : min= 1, max= 27, avg= 9.16, stdev= 4.77, samples=308 lat (usec) : 50=0.72%, 100=4.39%, 250=0.36%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=5.27%, 4=2.83%, 10=6.22%, 20=7.19%, 50=30.40% lat (msec) : 100=29.69%, 250=12.17%, 500=0.42%, 2000=0.03% cpu : usr=0.08%, sys=4.57%, ctx=6726, 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=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=152KiB/s (155kB/s), 38.3KiB/s-39.2KiB/s (39.2kB/s-40.2kB/s), io=23.4MiB (24.6MB), run=152688-158169msec WRITE: bw=159KiB/s (163kB/s), 39.4KiB/s-41.2KiB/s (40.4kB/s-42.2kB/s), io=24.6MiB (25.7MB), run=152688-158169msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144121: Mon Aug 10 19:31:16 2026 read: IOPS=4, BW=18.0KiB/s (19.4kB/s)(5992KiB/316175msec) clat (msec): min=5, max=1038, avg=41.01, stdev=51.87 lat (msec): min=5, max=1038, avg=41.01, stdev=51.87 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 40], 80.00th=[ 56], 90.00th=[ 91], 95.00th=[ 129], | 99.00th=[ 213], 99.50th=[ 257], 99.90th=[ 676], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 96, per=29.96%, avg=22.47, stdev=15.16, samples=513 iops : min= 1, max= 24, avg= 4.98, stdev= 3.82, samples=513 write: IOPS=4, BW=19.9KiB/s (20.4kB/s)(6296KiB/316175msec); 0 zone resets clat (msec): min=36, max=555, avg=161.59, stdev=81.33 lat (msec): min=36, max=555, avg=161.60, stdev=81.33 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 94], | 30.00th=[ 109], 40.00th=[ 123], 50.00th=[ 144], 60.00th=[ 165], | 70.00th=[ 188], 80.00th=[ 222], 90.00th=[ 279], 95.00th=[ 321], | 99.00th=[ 422], 99.50th=[ 460], 99.90th=[ 542], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 55, per=24.96%, avg=19.72, stdev=10.15, samples=611 iops : min= 1, max= 13, avg= 4.29, stdev= 2.60, samples=611 lat (msec) : 10=3.03%, 20=15.66%, 50=19.53%, 100=19.14%, 250=35.09% lat (msec) : 500=7.36%, 750=0.16%, 2000=0.03% cpu : usr=0.04%, sys=1.09%, ctx=5167, 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=144123: Mon Aug 10 19:31:16 2026 read: IOPS=4, BW=18.8KiB/s (19.3kB/s)(5940KiB/315838msec) clat (msec): min=6, max=1284, avg=40.39, stdev=53.45 lat (msec): min=6, max=1284, avg=40.39, stdev=53.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 55], 90.00th=[ 90], 95.00th=[ 121], | 99.00th=[ 201], 99.50th=[ 262], 99.90th=[ 489], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 96, per=29.99%, avg=22.49, stdev=15.69, samples=508 iops : min= 1, max= 24, avg= 4.99, stdev= 3.98, samples=508 write: IOPS=5, BW=20.1KiB/s (20.6kB/s)(6348KiB/315838msec); 0 zone resets clat (msec): min=29, max=698, avg=160.99, stdev=80.61 lat (msec): min=29, max=698, avg=161.00, stdev=80.61 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 94], | 30.00th=[ 111], 40.00th=[ 127], 50.00th=[ 142], 60.00th=[ 163], | 70.00th=[ 190], 80.00th=[ 222], 90.00th=[ 268], 95.00th=[ 317], | 99.00th=[ 426], 99.50th=[ 468], 99.90th=[ 584], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 55, per=25.15%, avg=19.87, stdev=10.18, samples=611 iops : min= 1, max= 13, avg= 4.33, stdev= 2.61, samples=611 lat (msec) : 10=3.09%, 20=15.59%, 50=19.40%, 100=18.59%, 250=36.26% lat (msec) : 500=6.90%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.11%, ctx=5032, 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=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=144125: Mon Aug 10 19:31:16 2026 read: IOPS=4, BW=19.0KiB/s (19.5kB/s)(6028KiB/316434msec) clat (msec): min=6, max=509, avg=41.60, stdev=44.43 lat (msec): min=6, max=509, avg=41.60, stdev=44.43 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 59], 90.00th=[ 97], 95.00th=[ 127], | 99.00th=[ 218], 99.50th=[ 262], 99.90th=[ 485], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 7, max= 94, per=29.64%, avg=22.23, stdev=15.46, samples=521 iops : min= 1, max= 23, avg= 4.92, stdev= 3.90, samples=521 write: IOPS=4, BW=19.8KiB/s (20.3kB/s)(6260KiB/316434msec); 0 zone resets clat (msec): min=30, max=1392, avg=161.91, stdev=90.62 lat (msec): min=30, max=1392, avg=161.91, stdev=90.62 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 77], 20.00th=[ 92], | 30.00th=[ 107], 40.00th=[ 124], 50.00th=[ 142], 60.00th=[ 161], | 70.00th=[ 184], 80.00th=[ 222], 90.00th=[ 275], 95.00th=[ 326], | 99.00th=[ 451], 99.50th=[ 514], 99.90th=[ 693], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 56, per=25.06%, avg=19.80, stdev=10.48, samples=604 iops : min= 1, max= 14, avg= 4.31, stdev= 2.68, samples=604 lat (msec) : 10=2.57%, 20=15.46%, 50=19.89%, 100=19.30%, 250=35.45% lat (msec) : 500=6.97%, 750=0.33%, 2000=0.03% cpu : usr=0.04%, sys=1.10%, ctx=5130, 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=144127: Mon Aug 10 19:31:16 2026 read: IOPS=4, BW=19.3KiB/s (19.8kB/s)(6052KiB/313026msec) clat (msec): min=5, max=660, avg=40.59, stdev=45.45 lat (msec): min=5, max=660, avg=40.60, stdev=45.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 58], 90.00th=[ 96], 95.00th=[ 128], | 99.00th=[ 220], 99.50th=[ 264], 99.90th=[ 351], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 104, per=30.57%, avg=22.93, stdev=16.66, samples=508 iops : min= 1, max= 26, avg= 5.10, stdev= 4.21, samples=508 write: IOPS=4, BW=19.9KiB/s (20.4kB/s)(6236KiB/313026msec); 0 zone resets clat (msec): min=36, max=1312, avg=161.12, stdev=86.27 lat (msec): min=36, max=1312, avg=161.12, stdev=86.27 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 94], | 30.00th=[ 110], 40.00th=[ 127], 50.00th=[ 142], 60.00th=[ 159], | 70.00th=[ 184], 80.00th=[ 220], 90.00th=[ 268], 95.00th=[ 313], | 99.00th=[ 451], 99.50th=[ 485], 99.90th=[ 659], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 55, per=25.02%, avg=19.76, stdev=10.05, samples=603 iops : min= 1, max= 13, avg= 4.30, stdev= 2.57, samples=603 lat (msec) : 10=3.68%, 20=15.85%, 50=19.01%, 100=18.49%, 250=36.04% lat (msec) : 500=6.67%, 750=0.23%, 2000=0.03% cpu : usr=0.04%, sys=1.14%, ctx=5154, 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=75.9KiB/s (77.7kB/s), 18.8KiB/s-19.3KiB/s (19.3kB/s-19.8kB/s), io=23.4MiB (24.6MB), run=313026-316434msec WRITE: bw=79.4KiB/s (81.4kB/s), 19.8KiB/s-20.1KiB/s (20.3kB/s-20.6kB/s), io=24.6MiB (25.7MB), run=313026-316434msec 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=144190: Mon Aug 10 19:31:59 2026 read: IOPS=12, BW=198KiB/s (203kB/s)(5920KiB/29861msec) clat (usec): min=39, max=274907, avg=42865.74, stdev=36237.19 lat (usec): min=39, max=274909, avg=42887.26, stdev=36230.90 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 109], | 30.00th=[ 27657], 40.00th=[ 34341], 50.00th=[ 38536], 60.00th=[ 45876], | 70.00th=[ 52167], 80.00th=[ 65274], 90.00th=[ 84411], 95.00th=[106431], | 99.00th=[183501], 99.50th=[196084], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 406, per=26.47%, avg=199.05, stdev=80.11, samples=58 iops : min= 1, max= 25, avg=11.64, stdev= 5.08, samples=58 write: IOPS=13, BW=213KiB/s (218kB/s)(6368KiB/29861msec); 0 zone resets clat (usec): min=1580, max=190549, avg=34804.88, stdev=36076.37 lat (usec): min=1582, max=190554, avg=34807.09, stdev=36076.52 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1811], 10.00th=[ 2180], 20.00th=[ 4752], | 30.00th=[ 7832], 40.00th=[ 12256], 50.00th=[ 22938], 60.00th=[ 33162], | 70.00th=[ 46400], 80.00th=[ 60556], 90.00th=[ 87557], 95.00th=[114820], | 99.00th=[143655], 99.50th=[185598], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 63, max= 443, per=27.15%, avg=214.79, stdev=85.90, samples=58 iops : min= 3, max= 27, avg=12.62, stdev= 5.40, samples=58 lat (usec) : 50=1.17%, 100=8.33%, 250=0.52%, 500=0.39%, 750=0.13% lat (msec) : 2=4.30%, 4=4.82%, 10=9.11%, 20=7.16%, 50=33.33% lat (msec) : 100=23.83%, 250=6.77%, 500=0.13% cpu : usr=0.06%, sys=5.02%, ctx=1392, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144192: Mon Aug 10 19:31:59 2026 read: IOPS=11, BW=188KiB/s (193kB/s)(5744KiB/30515msec) clat (usec): min=34, max=275571, avg=42979.60, stdev=37672.77 lat (usec): min=34, max=275573, avg=42980.86, stdev=37672.84 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 133], | 30.00th=[ 22938], 40.00th=[ 30278], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 54789], 80.00th=[ 70779], 90.00th=[ 87557], 95.00th=[106431], | 99.00th=[179307], 99.50th=[208667], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 22, max= 351, per=25.93%, avg=194.96, stdev=79.58, samples=57 iops : min= 1, max= 21, avg=11.37, stdev= 5.00, samples=57 write: IOPS=13, BW=214KiB/s (220kB/s)(6544KiB/30515msec); 0 zone resets clat (usec): min=1213, max=337667, avg=35873.31, stdev=45716.02 lat (usec): min=1216, max=337669, avg=35877.10, stdev=45717.08 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1860], 10.00th=[ 2409], 20.00th=[ 4621], | 30.00th=[ 6783], 40.00th=[ 10683], 50.00th=[ 17433], 60.00th=[ 29230], | 70.00th=[ 45876], 80.00th=[ 61080], 90.00th=[ 86508], 95.00th=[113771], | 99.00th=[198181], 99.50th=[287310], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 22, max= 413, per=27.14%, avg=214.64, stdev=94.14, samples=59 iops : min= 1, max= 25, avg=12.61, stdev= 5.95, samples=59 lat (usec) : 50=1.56%, 100=7.55%, 250=0.52%, 500=0.13% lat (msec) : 2=4.04%, 4=5.73%, 10=11.98%, 20=9.77%, 50=28.13% lat (msec) : 100=23.57%, 250=6.51%, 500=0.52% cpu : usr=0.11%, sys=5.04%, ctx=1386, 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=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=144194: Mon Aug 10 19:31:59 2026 read: IOPS=12, BW=196KiB/s (201kB/s)(6256KiB/31849msec) clat (usec): min=27, max=227092, avg=40748.38, stdev=33552.07 lat (usec): min=28, max=227092, avg=40750.06, stdev=33552.07 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 93], | 30.00th=[ 23725], 40.00th=[ 32375], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 53740], 80.00th=[ 63701], 90.00th=[ 81265], 95.00th=[103285], | 99.00th=[158335], 99.50th=[168821], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 31, max= 443, per=26.79%, avg=201.48, stdev=80.72, samples=61 iops : min= 1, max= 27, avg=11.77, stdev= 5.09, samples=61 write: IOPS=11, BW=189KiB/s (194kB/s)(6032KiB/31849msec); 0 zone resets clat (usec): min=1273, max=407771, avg=40990.60, stdev=46752.64 lat (usec): min=1274, max=407772, avg=40995.01, stdev=46753.06 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1958], 10.00th=[ 2638], 20.00th=[ 5800], | 30.00th=[ 9896], 40.00th=[ 16909], 50.00th=[ 27395], 60.00th=[ 36439], | 70.00th=[ 49546], 80.00th=[ 66323], 90.00th=[104334], 95.00th=[124257], | 99.00th=[179307], 99.50th=[325059], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 31, max= 380, per=23.65%, avg=187.10, stdev=79.69, samples=62 iops : min= 1, max= 23, avg=10.87, stdev= 5.01, samples=62 lat (usec) : 50=1.30%, 100=9.11%, 250=0.52%, 500=0.39%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.99%, 4=4.17%, 10=7.81%, 20=7.55%, 50=33.98% lat (msec) : 100=23.57%, 250=8.07%, 500=0.26% cpu : usr=0.07%, sys=5.04%, ctx=1429, 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=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=144195: Mon Aug 10 19:31:59 2026 read: IOPS=12, BW=200KiB/s (205kB/s)(6032KiB/30175msec) clat (usec): min=33, max=222978, avg=39951.06, stdev=32705.05 lat (usec): min=34, max=222979, avg=39952.43, stdev=32705.02 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 147], | 30.00th=[ 23725], 40.00th=[ 30540], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 52167], 80.00th=[ 65274], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[129500], 99.50th=[137364], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 62, max= 352, per=26.94%, avg=202.62, stdev=81.41, samples=58 iops : min= 3, max= 22, avg=11.84, stdev= 5.17, samples=58 write: IOPS=12, BW=207KiB/s (212kB/s)(6256KiB/30175msec); 0 zone resets clat (usec): min=1588, max=259501, avg=37130.07, stdev=43837.95 lat (usec): min=1590, max=259501, avg=37134.57, stdev=43836.45 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1909], 10.00th=[ 2474], 20.00th=[ 4555], | 30.00th=[ 7177], 40.00th=[ 10421], 50.00th=[ 17957], 60.00th=[ 31327], | 70.00th=[ 45351], 80.00th=[ 67634], 90.00th=[ 95945], 95.00th=[125305], | 99.00th=[206570], 99.50th=[242222], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 22, max= 411, per=26.30%, avg=208.03, stdev=67.66, samples=59 iops : min= 1, max= 25, avg=12.20, stdev= 4.24, samples=59 lat (usec) : 50=1.30%, 100=8.07%, 250=0.78%, 500=0.39%, 1000=0.13% lat (msec) : 2=4.17%, 4=5.73%, 10=11.33%, 20=7.55%, 50=30.21% lat (msec) : 100=23.05%, 250=7.16%, 500=0.13% cpu : usr=0.06%, sys=5.17%, ctx=1403, 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=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=752KiB/s (770kB/s), 188KiB/s-200KiB/s (193kB/s-205kB/s), io=23.4MiB (24.5MB), run=29861-31849msec WRITE: bw=791KiB/s (810kB/s), 189KiB/s-214KiB/s (194kB/s-220kB/s), io=24.6MiB (25.8MB), run=29861-31849msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144188: Mon Aug 10 19:32:49 2026 read: IOPS=4, BW=74.8KiB/s (76.6kB/s)(5920KiB/79189msec) clat (msec): min=7, max=277, avg=42.67, stdev=34.95 lat (msec): min=7, max=277, avg=42.67, stdev=34.95 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 58], 90.00th=[ 89], 95.00th=[ 113], | 99.00th=[ 176], 99.50th=[ 234], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 30, max= 351, per=29.17%, avg=85.76, stdev=54.53, samples=135 iops : min= 1, max= 21, avg= 4.57, stdev= 3.48, samples=135 write: IOPS=5, BW=80.4KiB/s (82.3kB/s)(6368KiB/79189msec); 0 zone resets clat (msec): min=39, max=472, avg=158.78, stdev=78.43 lat (msec): min=39, max=472, avg=158.79, stdev=78.43 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 70], 10.00th=[ 81], 20.00th=[ 92], | 30.00th=[ 107], 40.00th=[ 123], 50.00th=[ 140], 60.00th=[ 157], | 70.00th=[ 182], 80.00th=[ 222], 90.00th=[ 275], 95.00th=[ 317], | 99.00th=[ 414], 99.50th=[ 456], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 21, max= 224, per=26.51%, avg=82.19, stdev=37.58, samples=152 iops : min= 1, max= 14, avg= 4.35, stdev= 2.45, samples=152 lat (msec) : 10=0.78%, 20=10.29%, 50=25.39%, 100=22.01%, 250=34.38% lat (msec) : 500=7.16% cpu : usr=0.04%, sys=1.29%, ctx=1365, 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=144189: Mon Aug 10 19:32:49 2026 read: IOPS=4, BW=70.7KiB/s (72.4kB/s)(5744KiB/81199msec) clat (msec): min=6, max=451, avg=46.60, stdev=48.25 lat (msec): min=6, max=451, avg=46.60, stdev=48.25 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 92], 95.00th=[ 130], | 99.00th=[ 271], 99.50th=[ 342], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 21, max= 312, per=29.62%, avg=87.07, stdev=58.67, samples=130 iops : min= 1, max= 19, avg= 4.66, stdev= 3.78, samples=130 write: IOPS=5, BW=80.6KiB/s (82.5kB/s)(6544KiB/81199msec); 0 zone resets clat (msec): min=38, max=431, avg=156.90, stdev=72.02 lat (msec): min=38, max=431, avg=156.90, stdev=72.02 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 66], 10.00th=[ 80], 20.00th=[ 93], | 30.00th=[ 108], 40.00th=[ 124], 50.00th=[ 144], 60.00th=[ 163], | 70.00th=[ 188], 80.00th=[ 211], 90.00th=[ 259], 95.00th=[ 296], | 99.00th=[ 372], 99.50th=[ 388], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 30, max= 192, per=26.52%, avg=82.22, stdev=38.85, samples=156 iops : min= 1, max= 12, avg= 4.35, stdev= 2.52, samples=156 lat (msec) : 10=0.91%, 20=11.85%, 50=20.96%, 100=22.40%, 250=37.50% lat (msec) : 500=6.38% cpu : usr=0.03%, sys=1.27%, ctx=1359, 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= 0: pid=144191: Mon Aug 10 19:32:49 2026 read: IOPS=5, BW=81.2KiB/s (83.1kB/s)(6256KiB/77059msec) clat (msec): min=7, max=344, avg=44.55, stdev=42.88 lat (msec): min=7, max=344, avg=44.55, stdev=42.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 58], 90.00th=[ 84], 95.00th=[ 133], | 99.00th=[ 279], 99.50th=[ 330], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 351, per=32.31%, avg=94.98, stdev=67.47, samples=130 iops : min= 1, max= 21, avg= 5.15, stdev= 4.28, samples=130 write: IOPS=4, BW=78.3KiB/s (80.2kB/s)(6032KiB/77059msec); 0 zone resets clat (msec): min=44, max=446, avg=158.01, stdev=74.57 lat (msec): min=44, max=446, avg=158.01, stdev=74.56 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 69], 10.00th=[ 80], 20.00th=[ 96], | 30.00th=[ 113], 40.00th=[ 128], 50.00th=[ 144], 60.00th=[ 161], | 70.00th=[ 182], 80.00th=[ 205], 90.00th=[ 264], 95.00th=[ 317], | 99.00th=[ 422], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 30, max= 192, per=25.37%, avg=78.64, stdev=37.35, samples=150 iops : min= 1, max= 12, avg= 4.13, stdev= 2.45, samples=150 lat (msec) : 10=1.30%, 20=10.16%, 50=27.86%, 100=20.05%, 250=34.38% lat (msec) : 500=6.25% cpu : usr=0.03%, sys=1.28%, ctx=1390, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144193: Mon Aug 10 19:32:49 2026 read: IOPS=4, BW=75.4KiB/s (77.2kB/s)(6032KiB/80050msec) clat (msec): min=8, max=280, avg=46.21, stdev=44.06 lat (msec): min=8, max=280, avg=46.21, stdev=44.06 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 91], 95.00th=[ 133], | 99.00th=[ 271], 99.50th=[ 275], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 30, max= 318, per=30.34%, avg=89.19, stdev=62.99, samples=133 iops : min= 1, max= 19, avg= 4.80, stdev= 3.98, samples=133 write: IOPS=4, BW=78.2KiB/s (80.0kB/s)(6256KiB/80050msec); 0 zone resets clat (msec): min=48, max=417, avg=159.48, stdev=69.93 lat (msec): min=48, max=417, avg=159.48, stdev=69.93 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 73], 10.00th=[ 81], 20.00th=[ 97], | 30.00th=[ 113], 40.00th=[ 128], 50.00th=[ 146], 60.00th=[ 169], | 70.00th=[ 190], 80.00th=[ 215], 90.00th=[ 255], 95.00th=[ 292], | 99.00th=[ 380], 99.50th=[ 409], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 21, max= 192, per=25.66%, avg=79.54, stdev=35.92, samples=155 iops : min= 1, max= 12, avg= 4.18, stdev= 2.34, samples=155 lat (msec) : 10=1.04%, 20=10.81%, 50=23.70%, 100=20.83%, 250=37.76% lat (msec) : 500=5.86% cpu : usr=0.04%, sys=1.25%, ctx=1423, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=295KiB/s (302kB/s), 70.7KiB/s-81.2KiB/s (72.4kB/s-83.1kB/s), io=23.4MiB (24.5MB), run=77059-81199msec WRITE: bw=310KiB/s (318kB/s), 78.2KiB/s-80.6KiB/s (80.0kB/s-82.5kB/s), io=24.6MiB (25.8MB), run=77059-81199msec 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=144221: Mon Aug 10 19:33:02 2026 read: IOPS=1, BW=1751KiB/s (1793kB/s)(7168KiB/4093msec) clat (msec): min=189, max=509, avg=312.37, stdev=98.74 lat (msec): min=189, max=509, avg=312.37, stdev=98.74 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 257], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 305], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 330], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 1855, max= 3093, per=52.48%, avg=2181.80, stdev=512.66, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1251KiB/s (1281kB/s)(5120KiB/4093msec); 0 zone resets clat (msec): min=248, max=625, avg=378.83, stdev=143.82 lat (msec): min=250, max=625, avg=380.49, stdev=143.07 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1855, max= 2031, per=33.71%, avg=1961.75, stdev=75.29, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=16.67%, 500=66.67%, 750=16.67% cpu : usr=0.00%, sys=13.59%, ctx=373, 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=144222: Mon Aug 10 19:33:02 2026 read: IOPS=0, BW=416KiB/s (426kB/s)(2048KiB/4926msec) clat (msec): min=341, max=465, avg=403.90, stdev=87.59 lat (msec): min=341, max=465, avg=403.90, stdev=87.59 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=[ 468], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1467, max= 1988, per=41.56%, avg=1727.50, stdev=368.40, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2079KiB/s (2129kB/s)(10.0MiB/4926msec); 0 zone resets clat (msec): min=175, max=838, avg=411.50, stdev=221.35 lat (msec): min=175, max=839, avg=411.70, stdev=221.38 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 178], | 30.00th=[ 180], 40.00th=[ 275], 50.00th=[ 397], 60.00th=[ 456], | 70.00th=[ 460], 80.00th=[ 493], 90.00th=[ 667], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1855, max= 4000, per=38.58%, avg=2245.50, stdev=711.67, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 250=25.00%, 500=58.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=13.20%, 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=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=144223: Mon Aug 10 19:33:02 2026 read: IOPS=1, BW=1393KiB/s (1427kB/s)(6144KiB/4410msec) clat (usec): min=527, max=447947, avg=168237.31, stdev=210116.62 lat (usec): min=529, max=447948, avg=168238.66, stdev=210116.58 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 627], 50.00th=[ 627], 60.00th=[152044], | 70.00th=[408945], 80.00th=[408945], 90.00th=[446694], 95.00th=[446694], | 99.00th=[446694], 99.50th=[446694], 99.90th=[446694], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 1988, max= 3946, per=60.24%, avg=2504.00, stdev=961.66, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1393KiB/s (1427kB/s)(6144KiB/4410msec); 0 zone resets clat (msec): min=103, max=1275, avg=566.57, stdev=410.27 lat (msec): min=103, max=1275, avg=566.63, stdev=410.29 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 472], | 70.00th=[ 785], 80.00th=[ 785], 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= 1641, max= 2039, per=32.78%, avg=1907.80, stdev=166.29, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=25.00% lat (msec) : 250=16.67%, 500=41.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=8.12%, ctx=100, 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=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=144224: Mon Aug 10 19:33:02 2026 read: IOPS=1, BW=1182KiB/s (1210kB/s)(5120KiB/4332msec) clat (usec): min=596, max=299146, avg=67674.11, stdev=129908.76 lat (usec): min=597, max=299148, avg=67675.59, stdev=129908.78 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 594], | 30.00th=[ 3064], 40.00th=[ 3064], 50.00th=[ 6063], 60.00th=[ 6063], | 70.00th=[ 29492], 80.00th=[ 29492], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 1988, max= 6131, per=97.65%, avg=4059.50, stdev=2929.54, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1655KiB/s (1694kB/s)(7168KiB/4332msec); 0 zone resets clat (msec): min=173, max=1287, avg=570.28, stdev=374.74 lat (msec): min=174, max=1287, avg=570.36, stdev=374.76 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 222], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 550], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 751], 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= 1490, max= 4079, per=39.82%, avg=2317.60, stdev=1009.84, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 10=8.33%, 50=8.33%, 250=16.67%, 500=16.67% lat (msec) : 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=7.25%, ctx=188, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4158KiB/s (4257kB/s), 416KiB/s-1751KiB/s (426kB/s-1793kB/s), io=20.0MiB (20.0MB), run=4093-4926msec WRITE: bw=5821KiB/s (5960kB/s), 1251KiB/s-2079KiB/s (1281kB/s-2129kB/s), io=28.0MiB (29.4MB), run=4093-4926msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144216: Mon Aug 10 19:33:02 2026 read: IOPS=1, BW=1624KiB/s (1663kB/s)(7168KiB/4414msec) clat (msec): min=63, max=732, avg=254.30, stdev=239.92 lat (msec): min=63, max=732, avg=254.30, stdev=239.92 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 88], | 30.00th=[ 115], 40.00th=[ 115], 50.00th=[ 123], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 372], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1805, max= 6131, per=83.44%, avg=3001.50, stdev=2089.16, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=1, BW=1160KiB/s (1188kB/s)(5120KiB/4414msec); 0 zone resets clat (msec): min=277, max=744, avg=510.00, stdev=174.55 lat (msec): min=277, max=749, avg=511.04, stdev=176.17 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1805, max= 2043, per=39.05%, avg=1966.80, stdev=100.91, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=16.67%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=3.63%, ctx=59, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144217: Mon Aug 10 19:33:02 2026 read: IOPS=0, BW=433KiB/s (443kB/s)(2048KiB/4732msec) clat (msec): min=106, max=219, avg=162.90, stdev=80.11 lat (msec): min=106, max=219, avg=162.90, stdev=80.11 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 107], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 107], 60.00th=[ 220], | 70.00th=[ 220], 80.00th=[ 220], 90.00th=[ 220], 95.00th=[ 220], | 99.00th=[ 220], 99.50th=[ 220], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 1458, max= 1928, per=47.07%, avg=1693.00, stdev=332.34, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2164KiB/s (2216kB/s)(10.0MiB/4732msec); 0 zone resets clat (msec): min=187, max=916, avg=432.13, stdev=244.72 lat (msec): min=187, max=916, avg=432.46, stdev=244.61 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 201], | 30.00th=[ 239], 40.00th=[ 262], 50.00th=[ 326], 60.00th=[ 388], | 70.00th=[ 518], 80.00th=[ 558], 90.00th=[ 726], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1805, max= 4063, per=48.75%, avg=2455.00, stdev=883.72, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.06%, sys=3.74%, ctx=76, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144218: Mon Aug 10 19:33:02 2026 read: IOPS=1, BW=1079KiB/s (1105kB/s)(6144KiB/5693msec) clat (msec): min=69, max=943, avg=427.67, stdev=363.92 lat (msec): min=69, max=944, avg=427.72, stdev=364.00 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 105], | 30.00th=[ 105], 40.00th=[ 167], 50.00th=[ 167], 60.00th=[ 600], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1805, max= 4079, per=68.66%, avg=2469.75, stdev=1076.67, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1079KiB/s (1105kB/s)(6144KiB/5693msec); 0 zone resets clat (msec): min=204, max=1003, avg=510.13, stdev=380.40 lat (msec): min=204, max=1003, avg=510.23, stdev=380.39 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 401], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1928, max= 2972, per=44.30%, avg=2230.75, stdev=495.99, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=8.33%, 750=16.67%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=2.25%, ctx=58, 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=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=144219: Mon Aug 10 19:33:02 2026 read: IOPS=1, BW=1032KiB/s (1057kB/s)(5120KiB/4959msec) clat (msec): min=131, max=617, avg=278.28, stdev=201.53 lat (msec): min=131, max=617, avg=278.28, stdev=201.53 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1899, max= 4087, per=73.34%, avg=2638.00, stdev=1254.95, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1445KiB/s (1480kB/s)(7168KiB/4959msec); 0 zone resets clat (msec): min=249, max=1084, avg=494.99, stdev=308.03 lat (msec): min=249, max=1084, avg=495.71, stdev=307.50 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 259], | 30.00th=[ 266], 40.00th=[ 266], 50.00th=[ 397], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 701], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1899, max= 3938, per=50.53%, avg=2544.60, stdev=867.46, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=33.33%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=2.62%, ctx=59, 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=3597KiB/s (3684kB/s), 433KiB/s-1624KiB/s (443kB/s-1663kB/s), io=20.0MiB (20.0MB), run=4414-5693msec WRITE: bw=5036KiB/s (5157kB/s), 1079KiB/s-2164KiB/s (1105kB/s-2216kB/s), io=28.0MiB (29.4MB), run=4414-5693msec 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=144230: Mon Aug 10 19:33:15 2026 read: IOPS=1, BW=5118KiB/s (5241kB/s)(12.0MiB/2401msec) clat (msec): min=728, max=756, avg=739.39, stdev=14.75 lat (msec): min=728, max=756, avg=739.39, stdev=14.75 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.12%, sys=13.96%, ctx=250, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144231: Mon Aug 10 19:33:15 2026 read: IOPS=0, BW=1527KiB/s (1564kB/s)(4096KiB/2682msec) clat (nsec): min=741473k, max=741473k, avg=741473242.00, stdev= 0.00 lat (nsec): min=741478k, max=741478k, avg=741478239.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3054KiB/s (3128kB/s)(8192KiB/2682msec); 0 zone resets clat (msec): min=570, max=1152, avg=861.80, stdev=411.57 lat (msec): min=571, max=1153, avg=862.52, stdev=411.35 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8094, max= 8094, per=70.99%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.69%, ctx=128, 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=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=144232: Mon Aug 10 19:33:15 2026 write: IOPS=1, BW=4276KiB/s (4378kB/s)(12.0MiB/2874msec); 0 zone resets clat (msec): min=491, max=1151, avg=885.84, stdev=348.42 lat (msec): min=492, max=1156, avg=887.86, stdev=349.44 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8094, max= 8175, per=71.35%, avg=8134.50, stdev=57.28, 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=6.37%, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=144233: Mon Aug 10 19:33:15 2026 write: IOPS=1, BW=5791KiB/s (5930kB/s)(12.0MiB/2122msec); 0 zone resets clat (msec): min=395, max=1158, avg=655.80, stdev=435.15 lat (msec): min=395, max=1158, avg=656.17, stdev=435.12 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 5603, max= 8110, per=60.14%, avg=6856.50, stdev=1772.72, 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=5.52%, ctx=45, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6109KiB/s (6255kB/s), 1527KiB/s-5118KiB/s (1564kB/s-5241kB/s), io=16.0MiB (16.8MB), run=2401-2682msec WRITE: bw=11.1MiB/s (11.7MB/s), 3054KiB/s-5791KiB/s (3128kB/s-5930kB/s), io=32.0MiB (33.6MB), run=2122-2874msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144236: Mon Aug 10 19:33:16 2026 read: IOPS=1, BW=4815KiB/s (4931kB/s)(12.0MiB/2552msec) clat (msec): min=345, max=1263, avg=847.56, stdev=465.40 lat (msec): min=345, max=1263, avg=847.56, stdev=465.40 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.57%, ctx=52, 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=144237: Mon Aug 10 19:33:16 2026 read: IOPS=0, BW=1546KiB/s (1583kB/s)(4096KiB/2650msec) clat (nsec): min=781267k, max=781267k, avg=781266622.00, stdev= 0.00 lat (nsec): min=781270k, max=781270k, avg=781269802.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3091KiB/s (3166kB/s)(8192KiB/2650msec); 0 zone resets clat (msec): min=850, max=955, avg=902.93, stdev=74.52 lat (msec): min=850, max=955, avg=903.21, stdev=74.45 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 953], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 8126, max= 8126, per=65.72%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=100.00% cpu : usr=0.34%, sys=5.44%, ctx=65, 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=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=144238: Mon Aug 10 19:33:16 2026 write: IOPS=1, BW=5466KiB/s (5597kB/s)(12.0MiB/2248msec); 0 zone resets clat (msec): min=279, max=1314, avg=740.94, stdev=526.35 lat (msec): min=279, max=1314, avg=741.85, stdev=526.23 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 6234, max= 8159, per=58.20%, avg=7196.50, stdev=1361.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.98%, ctx=37, 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=144239: Mon Aug 10 19:33:16 2026 write: IOPS=1, BW=6927KiB/s (7093kB/s)(12.0MiB/1774msec); 0 zone resets clat (msec): min=320, max=744, avg=576.22, stdev=225.43 lat (msec): min=320, max=745, avg=576.64, stdev=225.42 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7488, max= 8094, per=63.01%, avg=7791.00, stdev=428.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=7.67%, ctx=38, 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 Run status group 0 (all jobs): READ: bw=6183KiB/s (6331kB/s), 1546KiB/s-4815KiB/s (1583kB/s-4931kB/s), io=16.0MiB (16.8MB), run=2552-2650msec WRITE: bw=12.1MiB/s (12.7MB/s), 3091KiB/s-6927KiB/s (3166kB/s-7093kB/s), io=32.0MiB (33.6MB), run=1774-2650msec