== sanity test 398b: DIO and buffer IO race ============== 15:10:33 (1788203433) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.48222 s, 11.2 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=144688: Mon Aug 31 15:13:27 2026 read: IOPS=9, BW=38.7KiB/s (39.6kB/s)(5992KiB/154844msec) clat (usec): min=35, max=865970, avg=51645.01, stdev=42007.09 lat (usec): min=35, max=865972, avg=51654.36, stdev=42000.55 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 71], 10.00th=[ 510], 20.00th=[ 24511], | 30.00th=[ 31851], 40.00th=[ 38536], 50.00th=[ 45876], 60.00th=[ 53740], | 70.00th=[ 63177], 80.00th=[ 74974], 90.00th=[ 94897], 95.00th=[112722], | 99.00th=[175113], 99.50th=[206570], 99.90th=[350225], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 87, per=25.34%, avg=38.52, stdev=16.89, samples=302 iops : min= 1, max= 21, avg= 8.97, stdev= 4.27, samples=302 write: IOPS=10, BW=40.7KiB/s (41.6kB/s)(6296KiB/154844msec); 0 zone resets clat (usec): min=1016, max=426110, avg=48900.20, stdev=50428.11 lat (usec): min=1017, max=426112, avg=48906.75, stdev=50437.86 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1893], 20.00th=[ 5669], | 30.00th=[ 10552], 40.00th=[ 21890], 50.00th=[ 35914], 60.00th=[ 48497], | 70.00th=[ 63177], 80.00th=[ 85459], 90.00th=[114820], 95.00th=[147850], | 99.00th=[219153], 99.50th=[238027], 99.90th=[408945], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 7, max= 95, per=25.60%, avg=40.70, stdev=16.39, samples=300 iops : min= 1, max= 23, avg= 9.52, stdev= 4.12, samples=300 lat (usec) : 50=0.36%, 100=3.84%, 250=0.55%, 500=0.10%, 750=0.03% lat (msec) : 2=5.37%, 4=2.80%, 10=7.03%, 20=7.10%, 50=30.99% lat (msec) : 100=30.66%, 250=10.84%, 500=0.29%, 1000=0.03% cpu : usr=0.09%, sys=4.46%, ctx=6611, 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=144689: Mon Aug 31 15:13:27 2026 read: IOPS=9, BW=37.6KiB/s (38.5kB/s)(5940KiB/157806msec) clat (usec): min=41, max=639694, avg=50962.38, stdev=40275.83 lat (usec): min=41, max=639695, avg=50975.37, stdev=40288.75 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 75], 10.00th=[ 1827], 20.00th=[ 23462], | 30.00th=[ 30016], 40.00th=[ 36963], 50.00th=[ 43779], 60.00th=[ 52691], | 70.00th=[ 62129], 80.00th=[ 76022], 90.00th=[ 96994], 95.00th=[116917], | 99.00th=[164627], 99.50th=[210764], 99.90th=[371196], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 7, max= 87, per=24.60%, avg=37.40, stdev=16.70, samples=307 iops : min= 1, max= 21, avg= 8.68, stdev= 4.21, samples=307 write: IOPS=10, BW=40.2KiB/s (41.2kB/s)(6348KiB/157806msec); 0 zone resets clat (usec): min=1035, max=835584, avg=51420.16, stdev=53482.61 lat (usec): min=1056, max=835586, avg=51442.82, stdev=53473.26 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1450], 10.00th=[ 2245], 20.00th=[ 5800], | 30.00th=[ 12518], 40.00th=[ 26870], 50.00th=[ 39060], 60.00th=[ 51643], | 70.00th=[ 67634], 80.00th=[ 87557], 90.00th=[119014], 95.00th=[143655], | 99.00th=[219153], 99.50th=[242222], 99.90th=[362808], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 100, per=25.09%, avg=39.90, stdev=17.54, samples=307 iops : min= 1, max= 25, avg= 9.31, stdev= 4.43, samples=307 lat (usec) : 50=0.13%, 100=3.52%, 250=0.75%, 500=0.16%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=4.75%, 4=3.09%, 10=6.48%, 20=7.26%, 50=31.61% lat (msec) : 100=29.82%, 250=11.91%, 500=0.26%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=4.35%, ctx=6685, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144690: Mon Aug 31 15:13:27 2026 read: IOPS=9, BW=38.3KiB/s (39.3kB/s)(6028KiB/157203msec) clat (usec): min=35, max=612879, avg=51484.12, stdev=39923.92 lat (usec): min=36, max=612880, avg=51493.14, stdev=39920.26 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 72], 10.00th=[ 8586], 20.00th=[ 24249], | 30.00th=[ 30540], 40.00th=[ 35914], 50.00th=[ 43779], 60.00th=[ 52691], | 70.00th=[ 62653], 80.00th=[ 78119], 90.00th=[ 99091], 95.00th=[116917], | 99.00th=[164627], 99.50th=[198181], 99.90th=[354419], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 103, per=25.20%, avg=38.30, stdev=17.81, samples=306 iops : min= 1, max= 25, avg= 8.91, stdev= 4.48, samples=306 write: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6260KiB/157203msec); 0 zone resets clat (usec): min=1043, max=679494, avg=50579.62, stdev=53286.72 lat (usec): min=1045, max=679496, avg=50586.78, stdev=53285.48 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1450], 10.00th=[ 2540], 20.00th=[ 5932], | 30.00th=[ 11207], 40.00th=[ 24773], 50.00th=[ 37487], 60.00th=[ 51119], | 70.00th=[ 67634], 80.00th=[ 85459], 90.00th=[116917], 95.00th=[145753], | 99.00th=[221250], 99.50th=[278922], 99.90th=[442500], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 110, per=24.99%, avg=39.74, stdev=17.80, samples=306 iops : min= 1, max= 27, avg= 9.27, stdev= 4.48, samples=306 lat (usec) : 50=0.29%, 100=3.78%, 250=0.49%, 500=0.07% lat (msec) : 2=4.17%, 4=3.68%, 10=6.84%, 20=6.77%, 50=31.93% lat (msec) : 100=30.14%, 250=11.39%, 500=0.39%, 750=0.07% cpu : usr=0.09%, sys=4.30%, ctx=6674, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144691: Mon Aug 31 15:13:27 2026 read: IOPS=9, BW=39.3KiB/s (40.2kB/s)(6052KiB/154091msec) clat (usec): min=34, max=596805, avg=48752.36, stdev=38045.85 lat (usec): min=34, max=596807, avg=48755.32, stdev=38045.74 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 68], 10.00th=[ 110], 20.00th=[ 23462], | 30.00th=[ 28705], 40.00th=[ 34866], 50.00th=[ 41681], 60.00th=[ 49546], | 70.00th=[ 59507], 80.00th=[ 73925], 90.00th=[ 93848], 95.00th=[111674], | 99.00th=[160433], 99.50th=[185598], 99.90th=[367002], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 7, max= 87, per=25.92%, avg=39.40, stdev=17.20, samples=299 iops : min= 1, max= 21, avg= 9.19, stdev= 4.35, samples=299 write: IOPS=10, BW=40.5KiB/s (41.4kB/s)(6236KiB/154091msec); 0 zone resets clat (usec): min=1070, max=669447, avg=51235.59, stdev=53532.31 lat (usec): min=1071, max=669448, avg=51241.99, stdev=53532.34 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1434], 10.00th=[ 2040], 20.00th=[ 6456], | 30.00th=[ 12256], 40.00th=[ 26608], 50.00th=[ 39060], 60.00th=[ 51643], | 70.00th=[ 66847], 80.00th=[ 84411], 90.00th=[115868], 95.00th=[145753], | 99.00th=[221250], 99.50th=[256902], 99.90th=[442500], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 7, max= 110, per=25.26%, avg=40.17, stdev=17.95, samples=302 iops : min= 1, max= 27, avg= 9.38, stdev= 4.52, samples=302 lat (usec) : 50=0.59%, 100=4.23%, 250=0.29%, 500=0.13%, 1000=0.03% lat (msec) : 2=4.92%, 4=2.44%, 10=6.45%, 20=6.97%, 50=33.79% lat (msec) : 100=28.71%, 250=11.00%, 500=0.39%, 750=0.07% cpu : usr=0.07%, sys=4.29%, ctx=6573, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=152KiB/s (156kB/s), 37.6KiB/s-39.3KiB/s (38.5kB/s-40.2kB/s), io=23.4MiB (24.6MB), run=154091-157806msec WRITE: bw=159KiB/s (163kB/s), 39.8KiB/s-40.7KiB/s (40.8kB/s-41.6kB/s), io=24.6MiB (25.7MB), run=154091-157806msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144693: Mon Aug 31 15:16:01 2026 read: IOPS=4, BW=19.3KiB/s (19.8kB/s)(5992KiB/310393msec) clat (msec): min=6, max=859, avg=41.64, stdev=47.97 lat (msec): min=6, max=859, avg=41.64, stdev=47.97 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 58], 90.00th=[ 92], 95.00th=[ 125], | 99.00th=[ 226], 99.50th=[ 288], 99.90th=[ 405], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 88, per=29.12%, avg=22.42, stdev=15.54, samples=513 iops : min= 1, max= 22, avg= 4.92, stdev= 3.91, samples=513 write: IOPS=5, BW=20.3KiB/s (20.8kB/s)(6296KiB/310393msec); 0 zone resets clat (msec): min=43, max=484, avg=157.38, stdev=76.16 lat (msec): min=43, max=484, avg=157.39, stdev=76.17 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 71], 10.00th=[ 81], 20.00th=[ 96], | 30.00th=[ 111], 40.00th=[ 122], 50.00th=[ 136], 60.00th=[ 157], | 70.00th=[ 180], 80.00th=[ 211], 90.00th=[ 264], 95.00th=[ 313], | 99.00th=[ 414], 99.50th=[ 447], 99.90th=[ 468], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 7, max= 48, per=25.14%, avg=20.11, stdev= 9.60, samples=597 iops : min= 1, max= 12, avg= 4.34, stdev= 2.43, samples=597 lat (msec) : 10=1.73%, 20=15.40%, 50=20.54%, 100=18.95%, 250=36.88% lat (msec) : 500=6.48%, 1000=0.03% cpu : usr=0.05%, sys=1.05%, ctx=5011, 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=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=144694: Mon Aug 31 15:16:01 2026 read: IOPS=4, BW=19.1KiB/s (19.5kB/s)(5940KiB/311389msec) clat (msec): min=6, max=682, avg=41.24, stdev=47.16 lat (msec): min=6, max=682, avg=41.24, stdev=47.16 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 55], 90.00th=[ 94], 95.00th=[ 128], | 99.00th=[ 218], 99.50th=[ 284], 99.90th=[ 451], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 96, per=29.63%, avg=22.81, stdev=15.70, samples=499 iops : min= 1, max= 24, avg= 5.01, stdev= 3.96, samples=499 write: IOPS=5, BW=20.4KiB/s (20.9kB/s)(6348KiB/311389msec); 0 zone resets clat (msec): min=39, max=723, avg=157.44, stdev=79.07 lat (msec): min=39, max=723, avg=157.45, stdev=79.07 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 71], 10.00th=[ 82], 20.00th=[ 96], | 30.00th=[ 110], 40.00th=[ 124], 50.00th=[ 138], 60.00th=[ 155], | 70.00th=[ 178], 80.00th=[ 207], 90.00th=[ 262], 95.00th=[ 309], | 99.00th=[ 430], 99.50th=[ 472], 99.90th=[ 642], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 47, per=25.23%, avg=20.19, stdev= 9.55, samples=598 iops : min= 1, max= 11, avg= 4.35, stdev= 2.42, samples=598 lat (msec) : 10=1.56%, 20=15.72%, 50=21.22%, 100=17.29%, 250=37.86% lat (msec) : 500=6.15%, 750=0.20% cpu : usr=0.05%, sys=1.05%, ctx=5125, 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=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=144695: Mon Aug 31 15:16:01 2026 read: IOPS=4, BW=19.5KiB/s (19.9kB/s)(6028KiB/309394msec) clat (msec): min=7, max=414, avg=42.53, stdev=43.13 lat (msec): min=7, max=414, avg=42.53, stdev=43.13 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 61], 90.00th=[ 93], 95.00th=[ 128], | 99.00th=[ 220], 99.50th=[ 275], 99.90th=[ 342], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 95, per=28.51%, avg=21.95, stdev=15.56, samples=526 iops : min= 1, max= 23, avg= 4.80, stdev= 3.91, samples=526 write: IOPS=5, BW=20.2KiB/s (20.7kB/s)(6260KiB/309394msec); 0 zone resets clat (msec): min=42, max=854, avg=156.52, stdev=80.53 lat (msec): min=42, max=854, avg=156.53, stdev=80.53 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 72], 10.00th=[ 81], 20.00th=[ 95], | 30.00th=[ 108], 40.00th=[ 121], 50.00th=[ 136], 60.00th=[ 155], | 70.00th=[ 178], 80.00th=[ 205], 90.00th=[ 253], 95.00th=[ 317], | 99.00th=[ 430], 99.50th=[ 481], 99.90th=[ 776], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 47, per=25.15%, avg=20.12, stdev= 9.68, samples=593 iops : min= 1, max= 11, avg= 4.34, stdev= 2.46, samples=593 lat (msec) : 10=1.73%, 20=14.97%, 50=20.51%, 100=19.43%, 250=37.70% lat (msec) : 500=5.53%, 750=0.07%, 1000=0.07% cpu : usr=0.04%, sys=1.04%, ctx=5066, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144696: Mon Aug 31 15:16:01 2026 read: IOPS=4, BW=19.7KiB/s (20.2kB/s)(6052KiB/307113msec) clat (msec): min=6, max=485, avg=40.71, stdev=45.52 lat (msec): min=6, max=485, avg=40.72, stdev=45.52 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 54], 90.00th=[ 91], 95.00th=[ 120], | 99.00th=[ 232], 99.50th=[ 326], 99.90th=[ 447], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 7, max= 103, per=30.12%, avg=23.19, stdev=16.20, samples=501 iops : min= 1, max= 25, avg= 5.11, stdev= 4.07, samples=501 write: IOPS=5, BW=20.3KiB/s (20.8kB/s)(6236KiB/307113msec); 0 zone resets clat (msec): min=44, max=702, avg=157.24, stdev=80.07 lat (msec): min=44, max=702, avg=157.24, stdev=80.07 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 70], 10.00th=[ 80], 20.00th=[ 94], | 30.00th=[ 108], 40.00th=[ 121], 50.00th=[ 136], 60.00th=[ 155], | 70.00th=[ 180], 80.00th=[ 211], 90.00th=[ 257], 95.00th=[ 317], | 99.00th=[ 439], 99.50th=[ 481], 99.90th=[ 676], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 47, per=25.35%, avg=20.28, stdev= 9.72, samples=587 iops : min= 1, max= 11, avg= 4.38, stdev= 2.47, samples=587 lat (msec) : 10=1.79%, 20=16.11%, 50=20.64%, 100=18.78%, 250=36.52% lat (msec) : 500=5.96%, 750=0.20% cpu : usr=0.04%, sys=1.01%, ctx=4973, 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=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=77.1KiB/s (78.0kB/s), 19.1KiB/s-19.7KiB/s (19.5kB/s-20.2kB/s), io=23.4MiB (24.6MB), run=307113-311389msec WRITE: bw=80.7KiB/s (82.7kB/s), 20.2KiB/s-20.4KiB/s (20.7kB/s-20.9kB/s), io=24.6MiB (25.7MB), run=307113-311389msec 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=144753: Mon Aug 31 15:16:50 2026 read: IOPS=10, BW=173KiB/s (177kB/s)(5920KiB/34165msec) clat (usec): min=40, max=245087, avg=47805.57, stdev=40452.38 lat (usec): min=40, max=245089, avg=47807.08, stdev=40452.37 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 63], 10.00th=[ 74], 20.00th=[ 124], | 30.00th=[ 28181], 40.00th=[ 36963], 50.00th=[ 43779], 60.00th=[ 52167], | 70.00th=[ 60556], 80.00th=[ 76022], 90.00th=[ 95945], 95.00th=[125305], | 99.00th=[187696], 99.50th=[189793], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 31, max= 383, per=27.96%, avg=173.61, stdev=75.72, samples=67 iops : min= 1, max= 23, avg=10.06, stdev= 4.80, samples=67 write: IOPS=11, BW=186KiB/s (191kB/s)(6368KiB/34165msec); 0 zone resets clat (usec): min=1556, max=296966, avg=40472.67, stdev=43358.53 lat (usec): min=1610, max=296968, avg=40481.62, stdev=43355.12 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2008], 10.00th=[ 3392], 20.00th=[ 6849], | 30.00th=[ 10814], 40.00th=[ 14353], 50.00th=[ 24249], 60.00th=[ 34866], | 70.00th=[ 49021], 80.00th=[ 72877], 90.00th=[105382], 95.00th=[129500], | 99.00th=[175113], 99.50th=[200279], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 31, max= 415, per=28.55%, avg=186.43, stdev=88.03, samples=67 iops : min= 1, max= 25, avg=10.85, stdev= 5.55, samples=67 lat (usec) : 50=1.04%, 100=6.90%, 250=2.08%, 500=0.52%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.73%, 4=3.91%, 10=8.85%, 20=10.29%, 50=27.47% lat (msec) : 100=25.65%, 250=10.16%, 500=0.13% cpu : usr=0.09%, sys=4.98%, ctx=1518, 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=144754: Mon Aug 31 15:16:50 2026 read: IOPS=9, BW=149KiB/s (153kB/s)(5744KiB/38557msec) clat (usec): min=41, max=239722, avg=48277.04, stdev=38866.54 lat (usec): min=41, max=239723, avg=48282.01, stdev=38868.25 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 65], 10.00th=[ 72], 20.00th=[ 200], | 30.00th=[ 27395], 40.00th=[ 38011], 50.00th=[ 46400], 60.00th=[ 53216], | 70.00th=[ 65274], 80.00th=[ 74974], 90.00th=[ 96994], 95.00th=[112722], | 99.00th=[158335], 99.50th=[208667], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 30, max= 507, per=25.09%, avg=155.83, stdev=89.28, samples=71 iops : min= 1, max= 31, avg= 8.96, stdev= 5.63, samples=71 write: IOPS=10, BW=170KiB/s (174kB/s)(6544KiB/38557msec); 0 zone resets clat (usec): min=1579, max=563037, avg=51029.38, stdev=65033.58 lat (usec): min=1579, max=563042, avg=51043.93, stdev=65054.99 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2040], 10.00th=[ 3490], 20.00th=[ 7111], | 30.00th=[ 10159], 40.00th=[ 16581], 50.00th=[ 26870], 60.00th=[ 41157], | 70.00th=[ 58983], 80.00th=[ 87557], 90.00th=[122160], 95.00th=[175113], | 99.00th=[304088], 99.50th=[333448], 99.90th=[566232], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 31, max= 477, per=25.83%, avg=168.64, stdev=93.71, samples=75 iops : min= 1, max= 29, avg= 9.77, stdev= 5.91, samples=75 lat (usec) : 50=0.78%, 100=7.68%, 250=0.91%, 500=0.26%, 750=0.13% lat (msec) : 2=2.60%, 4=4.43%, 10=9.24%, 20=8.72%, 50=26.30% lat (msec) : 100=26.69%, 250=11.20%, 500=0.91%, 750=0.13% cpu : usr=0.09%, sys=4.53%, ctx=1532, 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=144755: Mon Aug 31 15:16:50 2026 read: IOPS=11, BW=178KiB/s (183kB/s)(6256KiB/35069msec) clat (usec): min=31, max=197642, avg=47883.22, stdev=41274.61 lat (usec): min=32, max=197643, avg=47884.65, stdev=41274.59 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 121], | 30.00th=[ 21103], 40.00th=[ 36963], 50.00th=[ 45876], 60.00th=[ 54264], | 70.00th=[ 65274], 80.00th=[ 76022], 90.00th=[105382], 95.00th=[125305], | 99.00th=[183501], 99.50th=[193987], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 444, per=28.74%, avg=178.48, stdev=74.50, samples=69 iops : min= 1, max= 27, avg=10.38, stdev= 4.68, samples=69 write: IOPS=10, BW=172KiB/s (176kB/s)(6032KiB/35069msec); 0 zone resets clat (usec): min=1481, max=222776, avg=43116.46, stdev=44560.03 lat (usec): min=1481, max=222779, avg=43119.09, stdev=44559.89 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2073], 10.00th=[ 3490], 20.00th=[ 6783], | 30.00th=[ 10159], 40.00th=[ 15926], 50.00th=[ 25560], 60.00th=[ 41157], | 70.00th=[ 58983], 80.00th=[ 77071], 90.00th=[106431], 95.00th=[135267], | 99.00th=[204473], 99.50th=[221250], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 319, per=26.11%, avg=170.49, stdev=73.90, samples=69 iops : min= 1, max= 19, avg= 9.86, stdev= 4.66, samples=69 lat (usec) : 50=0.65%, 100=8.46%, 250=2.73%, 500=0.78%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.86%, 4=3.12%, 10=9.51%, 20=8.98%, 50=22.79% lat (msec) : 100=28.65%, 250=11.20% cpu : usr=0.07%, sys=4.75%, ctx=1463, 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=144756: Mon Aug 31 15:16:50 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34708msec) clat (usec): min=38, max=246115, avg=50939.13, stdev=44129.02 lat (usec): min=38, max=246117, avg=50945.02, stdev=44129.54 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 64], 10.00th=[ 75], 20.00th=[ 122], | 30.00th=[ 29230], 40.00th=[ 36963], 50.00th=[ 44303], 60.00th=[ 54789], | 70.00th=[ 64750], 80.00th=[ 78119], 90.00th=[112722], 95.00th=[137364], | 99.00th=[202376], 99.50th=[212861], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 30, max= 380, per=27.81%, avg=172.69, stdev=70.86, samples=68 iops : min= 1, max= 23, avg=10.01, stdev= 4.45, samples=68 write: IOPS=11, BW=180KiB/s (185kB/s)(6256KiB/34708msec); 0 zone resets clat (usec): min=1518, max=262950, avg=39031.49, stdev=42815.28 lat (usec): min=1521, max=262951, avg=39034.41, stdev=42815.25 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2089], 10.00th=[ 3556], 20.00th=[ 6063], | 30.00th=[ 8717], 40.00th=[ 12256], 50.00th=[ 21103], 60.00th=[ 34866], | 70.00th=[ 50070], 80.00th=[ 69731], 90.00th=[103285], 95.00th=[128451], | 99.00th=[177210], 99.50th=[202376], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 31, max= 349, per=27.72%, avg=181.01, stdev=78.18, samples=68 iops : min= 1, max= 21, avg=10.53, stdev= 4.95, samples=68 lat (usec) : 50=0.91%, 100=8.46%, 250=1.04%, 500=0.39%, 750=0.13% lat (msec) : 2=2.21%, 4=4.17%, 10=11.07%, 20=8.85%, 50=25.91% lat (msec) : 100=24.48%, 250=12.24%, 500=0.13% cpu : usr=0.07%, sys=5.22%, ctx=1475, 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=621KiB/s (636kB/s), 149KiB/s-178KiB/s (153kB/s-183kB/s), io=23.4MiB (24.5MB), run=34165-38557msec WRITE: bw=654KiB/s (669kB/s), 170KiB/s-186KiB/s (174kB/s-191kB/s), io=24.6MiB (25.8MB), run=34165-38557msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144757: Mon Aug 31 15:17:40 2026 read: IOPS=4, BW=67.5KiB/s (69.1kB/s)(5920KiB/87712msec) clat (msec): min=6, max=319, avg=55.20, stdev=46.19 lat (msec): min=6, max=319, avg=55.20, stdev=46.19 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 51], | 70.00th=[ 59], 80.00th=[ 71], 90.00th=[ 106], 95.00th=[ 163], | 99.00th=[ 262], 99.50th=[ 264], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 30, max= 221, per=29.26%, avg=79.59, stdev=46.03, samples=146 iops : min= 1, max= 13, avg= 4.14, stdev= 2.93, samples=146 write: IOPS=4, BW=72.6KiB/s (74.3kB/s)(6368KiB/87712msec); 0 zone resets clat (msec): min=61, max=458, avg=168.13, stdev=75.42 lat (msec): min=61, max=458, avg=168.15, stdev=75.43 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 79], 10.00th=[ 91], 20.00th=[ 108], | 30.00th=[ 122], 40.00th=[ 138], 50.00th=[ 150], 60.00th=[ 165], | 70.00th=[ 190], 80.00th=[ 226], 90.00th=[ 284], 95.00th=[ 330], | 99.00th=[ 414], 99.50th=[ 456], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 29, max= 160, per=26.13%, avg=74.72, stdev=32.01, samples=167 iops : min= 1, max= 10, avg= 3.83, stdev= 2.05, samples=167 lat (msec) : 10=0.52%, 20=5.86%, 50=22.27%, 100=22.66%, 250=41.02% lat (msec) : 500=7.68% cpu : usr=0.04%, sys=1.15%, ctx=1342, 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=144758: Mon Aug 31 15:17:40 2026 read: IOPS=4, BW=65.4KiB/s (66.9kB/s)(5744KiB/87880msec) clat (msec): min=8, max=356, avg=55.29, stdev=50.14 lat (msec): min=8, max=356, avg=55.30, stdev=50.14 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 41], 60.00th=[ 47], | 70.00th=[ 59], 80.00th=[ 72], 90.00th=[ 115], 95.00th=[ 157], | 99.00th=[ 284], 99.50th=[ 313], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 344, per=29.06%, avg=79.06, stdev=54.54, samples=141 iops : min= 1, max= 21, avg= 4.12, stdev= 3.46, samples=141 write: IOPS=4, BW=74.5KiB/s (76.3kB/s)(6544KiB/87880msec); 0 zone resets clat (msec): min=53, max=467, avg=166.04, stdev=79.52 lat (msec): min=53, max=467, avg=166.04, stdev=79.52 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 80], 10.00th=[ 87], 20.00th=[ 102], | 30.00th=[ 114], 40.00th=[ 126], 50.00th=[ 142], 60.00th=[ 167], | 70.00th=[ 192], 80.00th=[ 224], 90.00th=[ 279], 95.00th=[ 330], | 99.00th=[ 409], 99.50th=[ 426], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 29, max= 159, per=26.63%, avg=76.17, stdev=33.97, samples=168 iops : min= 1, max= 9, avg= 3.92, stdev= 2.15, samples=168 lat (msec) : 10=0.26%, 20=6.51%, 50=24.09%, 100=20.96%, 250=39.45% lat (msec) : 500=8.72% cpu : usr=0.06%, sys=1.22%, ctx=1372, 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=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=144759: Mon Aug 31 15:17:40 2026 read: IOPS=4, BW=73.3KiB/s (75.1kB/s)(6256KiB/85308msec) clat (msec): min=8, max=267, avg=53.90, stdev=45.66 lat (msec): min=8, max=267, avg=53.90, stdev=45.66 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 57], 80.00th=[ 72], 90.00th=[ 102], 95.00th=[ 165], | 99.00th=[ 245], 99.50th=[ 262], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 29, max= 311, per=31.89%, avg=86.74, stdev=56.00, samples=142 iops : min= 1, max= 19, avg= 4.60, stdev= 3.52, samples=142 write: IOPS=4, BW=70.7KiB/s (72.4kB/s)(6032KiB/85308msec); 0 zone resets clat (msec): min=56, max=497, avg=169.48, stdev=75.03 lat (msec): min=56, max=497, avg=169.48, stdev=75.03 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 82], 10.00th=[ 91], 20.00th=[ 107], | 30.00th=[ 121], 40.00th=[ 140], 50.00th=[ 155], 60.00th=[ 171], | 70.00th=[ 194], 80.00th=[ 220], 90.00th=[ 266], 95.00th=[ 321], | 99.00th=[ 435], 99.50th=[ 464], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 29, max= 157, per=25.21%, avg=72.10, stdev=29.72, samples=163 iops : min= 1, max= 9, avg= 3.67, stdev= 1.90, samples=163 lat (msec) : 10=0.39%, 20=6.25%, 50=25.13%, 100=21.48%, 250=40.62% lat (msec) : 500=6.12% cpu : usr=0.04%, sys=1.22%, ctx=1383, 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=144760: Mon Aug 31 15:17:40 2026 read: IOPS=4, BW=68.9KiB/s (70.6kB/s)(6032KiB/87539msec) clat (msec): min=9, max=339, avg=53.26, stdev=45.80 lat (msec): min=9, max=339, avg=53.26, stdev=45.81 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 56], 80.00th=[ 73], 90.00th=[ 102], 95.00th=[ 140], | 99.00th=[ 268], 99.50th=[ 279], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 29, max= 253, per=31.00%, avg=84.31, stdev=53.48, samples=139 iops : min= 1, max= 15, avg= 4.43, stdev= 3.42, samples=139 write: IOPS=4, BW=71.5KiB/s (73.2kB/s)(6256KiB/87539msec); 0 zone resets clat (msec): min=54, max=469, avg=171.75, stdev=73.78 lat (msec): min=54, max=469, avg=171.75, stdev=73.78 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 84], 10.00th=[ 96], 20.00th=[ 114], | 30.00th=[ 126], 40.00th=[ 136], 50.00th=[ 153], 60.00th=[ 171], | 70.00th=[ 194], 80.00th=[ 228], 90.00th=[ 279], 95.00th=[ 326], | 99.00th=[ 393], 99.50th=[ 447], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 29, max= 159, per=25.15%, avg=71.93, stdev=32.26, samples=170 iops : min= 1, max= 9, avg= 3.65, stdev= 2.04, samples=170 lat (msec) : 10=0.13%, 20=6.38%, 50=24.61%, 100=18.75%, 250=42.06% lat (msec) : 500=8.07% cpu : usr=0.05%, sys=1.19%, ctx=1376, 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=273KiB/s (279kB/s), 65.4KiB/s-73.3KiB/s (66.9kB/s-75.1kB/s), io=23.4MiB (24.5MB), run=85308-87880msec WRITE: bw=287KiB/s (294kB/s), 70.7KiB/s-74.5KiB/s (72.4kB/s-76.3kB/s), io=24.6MiB (25.8MB), run=85308-87880msec 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=144781: Mon Aug 31 15:17:56 2026 read: IOPS=1, BW=1628KiB/s (1667kB/s)(7168KiB/4402msec) clat (usec): min=773, max=515930, avg=257967.00, stdev=155785.06 lat (usec): min=774, max=515931, avg=257968.82, stdev=155785.48 clat percentiles (usec): | 1.00th=[ 775], 5.00th=[ 775], 10.00th=[ 775], 20.00th=[181404], | 30.00th=[229639], 40.00th=[229639], 50.00th=[250610], 60.00th=[304088], | 70.00th=[304088], 80.00th=[325059], 90.00th=[517997], 95.00th=[517997], | 99.00th=[517997], 99.50th=[517997], 99.90th=[517997], 99.95th=[517997], | 99.99th=[517997] bw ( KiB/s): min= 1492, max= 4039, per=63.35%, avg=2357.75, stdev=1142.67, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1163KiB/s (1191kB/s)(5120KiB/4402msec); 0 zone resets clat (msec): min=295, max=641, avg=466.08, stdev=149.74 lat (msec): min=296, max=642, avg=466.31, stdev=149.62 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1768, max= 1980, per=36.35%, avg=1894.00, stdev=92.65, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=25.00% cpu : usr=0.00%, sys=13.04%, ctx=377, 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=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=144783: Mon Aug 31 15:17:56 2026 read: IOPS=0, BW=372KiB/s (381kB/s)(2048KiB/5502msec) clat (msec): min=3, max=377, avg=190.23, stdev=264.63 lat (msec): min=3, max=377, avg=190.24, stdev=264.63 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 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= 1484, max= 1768, per=43.69%, avg=1626.00, stdev=200.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1861KiB/s (1906kB/s)(10.0MiB/5502msec); 0 zone resets clat (msec): min=127, max=1525, avg=483.80, stdev=405.70 lat (msec): min=127, max=1525, avg=484.16, stdev=405.61 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 222], | 30.00th=[ 230], 40.00th=[ 249], 50.00th=[ 330], 60.00th=[ 409], | 70.00th=[ 464], 80.00th=[ 609], 90.00th=[ 676], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 1768, max= 5657, per=55.41%, avg=2887.67, stdev=1619.28, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 4=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.04%, sys=10.98%, ctx=151, 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=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=144785: Mon Aug 31 15:17:56 2026 read: IOPS=1, BW=1174KiB/s (1202kB/s)(6144KiB/5235msec) clat (usec): min=783, max=423508, avg=135728.09, stdev=197780.48 lat (usec): min=784, max=423511, avg=135730.02, stdev=197780.78 clat percentiles (usec): | 1.00th=[ 783], 5.00th=[ 783], 10.00th=[ 783], 20.00th=[ 947], | 30.00th=[ 947], 40.00th=[ 2376], 50.00th=[ 2376], 60.00th=[ 32113], | 70.00th=[354419], 80.00th=[354419], 90.00th=[421528], 95.00th=[421528], | 99.00th=[421528], 99.50th=[421528], 99.90th=[421528], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 2043, max= 3886, per=84.78%, avg=3155.33, stdev=978.99, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1174KiB/s (1202kB/s)(6144KiB/5235msec); 0 zone resets clat (msec): min=207, max=1661, avg=684.61, stdev=580.83 lat (msec): min=207, max=1661, avg=700.69, stdev=595.32 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 592], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 1424, max= 4087, per=43.14%, avg=2248.20, stdev=1053.18, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 1000=16.67% lat (msec) : 4=8.33%, 50=8.33%, 250=8.33%, 500=33.33%, 750=8.33% lat (msec) : 2000=16.67% cpu : usr=0.00%, sys=6.76%, ctx=154, 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=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=144788: Mon Aug 31 15:17:56 2026 read: IOPS=1, BW=1184KiB/s (1213kB/s)(5120KiB/4324msec) clat (usec): min=1011, max=414107, avg=227044.75, stdev=207455.00 lat (usec): min=1012, max=414109, avg=227046.83, stdev=207455.25 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1012], 10.00th=[ 1012], 20.00th=[ 1012], | 30.00th=[ 2024], 40.00th=[ 2024], 50.00th=[341836], 60.00th=[341836], | 70.00th=[375391], 80.00th=[375391], 90.00th=[413139], 95.00th=[413139], | 99.00th=[413139], 99.50th=[413139], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 1943, max= 5941, per=100.00%, avg=3942.00, stdev=2827.01, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1658KiB/s (1698kB/s)(7168KiB/4324msec); 0 zone resets clat (msec): min=153, max=1117, avg=446.81, stdev=312.62 lat (msec): min=154, max=1118, avg=447.34, stdev=312.47 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 305], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 351], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 498], 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= 1432, max= 4031, per=43.73%, avg=2279.00, stdev=1183.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 2=8.33%, 4=8.33%, 250=8.33%, 500=66.67%, 2000=8.33% cpu : usr=0.00%, sys=13.95%, ctx=246, 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=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=3722KiB/s (3812kB/s), 372KiB/s-1628KiB/s (381kB/s-1667kB/s), io=20.0MiB (20.0MB), run=4324-5502msec WRITE: bw=5211KiB/s (5336kB/s), 1163KiB/s-1861KiB/s (1191kB/s-1906kB/s), io=28.0MiB (29.4MB), run=4324-5502msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144782: Mon Aug 31 15:17:57 2026 read: IOPS=1, BW=1165KiB/s (1193kB/s)(7168KiB/6153msec) clat (msec): min=140, max=1336, avg=385.18, stdev=426.56 lat (msec): min=140, max=1336, avg=385.18, stdev=426.56 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 150], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 234], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 363], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 1805, max= 3953, per=75.91%, avg=2376.80, stdev=887.09, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=832KiB/s (852kB/s)(5120KiB/6153msec); 0 zone resets clat (msec): min=220, max=968, avg=625.00, stdev=286.48 lat (msec): min=220, max=968, avg=625.16, stdev=286.47 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 518], 40.00th=[ 518], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1872, max= 2048, per=45.27%, avg=1984.75, stdev=82.02, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=41.67%, 500=16.67%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=2.42%, ctx=128, 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=144784: Mon Aug 31 15:17:57 2026 read: IOPS=0, BW=321KiB/s (328kB/s)(2048KiB/6385msec) clat (msec): min=292, max=815, avg=553.91, stdev=369.71 lat (msec): min=292, max=815, avg=553.91, stdev=369.71 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 818], | 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= 2003, max= 2035, per=64.48%, avg=2019.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1604KiB/s (1642kB/s)(10.0MiB/6385msec); 0 zone resets clat (msec): min=153, max=992, avg=513.89, stdev=275.95 lat (msec): min=153, max=992, avg=515.04, stdev=275.16 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 199], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 376], 60.00th=[ 584], | 70.00th=[ 701], 80.00th=[ 709], 90.00th=[ 768], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1805, max= 4087, per=50.96%, avg=2234.25, stdev=753.81, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 250=16.67%, 500=33.33%, 750=25.00%, 1000=25.00% cpu : usr=0.03%, sys=3.90%, ctx=98, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144786: Mon Aug 31 15:17:57 2026 read: IOPS=0, BW=981KiB/s (1005kB/s)(6144KiB/6262msec) clat (msec): min=95, max=351, avg=204.90, stdev=97.20 lat (msec): min=95, max=351, avg=204.90, stdev=97.20 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 103], | 30.00th=[ 103], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 1872, max= 4087, per=84.73%, avg=2653.00, stdev=1243.53, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=981KiB/s (1005kB/s)(6144KiB/6262msec); 0 zone resets clat (msec): min=242, max=1642, avg=783.87, stdev=465.52 lat (msec): min=242, max=1642, avg=783.99, stdev=465.51 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 735], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 1928, max= 2035, per=45.43%, avg=1991.50, stdev=45.20, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=25.00%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.03%, sys=2.83%, ctx=109, 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=144787: Mon Aug 31 15:17:57 2026 read: IOPS=0, BW=783KiB/s (802kB/s)(5120KiB/6540msec) clat (msec): min=81, max=932, avg=445.85, stdev=345.54 lat (msec): min=81, max=932, avg=445.85, stdev=345.54 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1872, max= 4087, per=85.19%, avg=2667.33, stdev=1232.44, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1096KiB/s (1122kB/s)(7168KiB/6540msec); 0 zone resets clat (msec): min=155, max=1397, avg=579.03, stdev=431.47 lat (msec): min=156, max=1397, avg=579.17, stdev=431.44 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 199], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 609], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 743], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1805, max= 4087, per=54.30%, avg=2380.60, stdev=958.01, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=16.67%, 750=33.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=2.34%, ctx=86, 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=3131KiB/s (3207kB/s), 321KiB/s-1165KiB/s (328kB/s-1193kB/s), io=20.0MiB (20.0MB), run=6153-6540msec WRITE: bw=4384KiB/s (4489kB/s), 832KiB/s-1604KiB/s (852kB/s-1642kB/s), io=28.0MiB (29.4MB), run=6153-6540msec 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=144795: Mon Aug 31 15:18:15 2026 read: IOPS=0, BW=2129KiB/s (2180kB/s)(12.0MiB/5771msec) clat (msec): min=570, max=2910, avg=1871.26, stdev=1191.88 lat (msec): min=570, max=2910, avg=1871.26, stdev=1191.88 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 2140], 50.00th=[ 2140], 60.00th=[ 2140], | 70.00th=[ 2903], 80.00th=[ 2903], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 7474, max= 8159, per=100.00%, avg=7816.50, stdev=484.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.77%, ctx=57, 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=144796: Mon Aug 31 15:18:15 2026 read: IOPS=0, BW=731KiB/s (749kB/s)(4096KiB/5603msec) clat (nsec): min=1887.0M, max=1887.0M, avg=1887975707.00, stdev= 0.00 lat (nsec): min=1887.0M, max=1887.0M, avg=1887980692.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1888], 5.00th=[ 1888], 10.00th=[ 1888], 20.00th=[ 1888], | 30.00th=[ 1888], 40.00th=[ 1888], 50.00th=[ 1888], 60.00th=[ 1888], | 70.00th=[ 1888], 80.00th=[ 1888], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1462KiB/s (1497kB/s)(8192KiB/5603msec); 0 zone resets clat (msec): min=1313, max=2316, avg=1815.07, stdev=709.45 lat (msec): min=1314, max=2317, avg=1815.77, stdev=709.38 clat percentiles (msec): | 1.00th=[ 1318], 5.00th=[ 1318], 10.00th=[ 1318], 20.00th=[ 1318], | 30.00th=[ 1318], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 2333], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7984, max= 7984, per=100.00%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.04%, sys=2.39%, ctx=63, 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=144797: Mon Aug 31 15:18:15 2026 write: IOPS=0, BW=2248KiB/s (2302kB/s)(12.0MiB/5465msec); 0 zone resets clat (msec): min=602, max=2623, avg=1794.42, stdev=1058.17 lat (msec): min=608, max=2624, avg=1796.76, stdev=1055.26 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 2165], 50.00th=[ 2165], 60.00th=[ 2165], | 70.00th=[ 2635], 80.00th=[ 2635], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 7474, max= 8047, per=100.00%, avg=7760.50, stdev=405.17, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, >=2000=66.67% cpu : usr=0.02%, sys=3.00%, ctx=68, 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=144798: Mon Aug 31 15:18:15 2026 write: IOPS=0, BW=2959KiB/s (3030kB/s)(12.0MiB/4153msec); 0 zone resets clat (msec): min=440, max=2115, avg=1337.26, stdev=843.57 lat (msec): min=442, max=2117, avg=1338.70, stdev=843.47 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 1452], 50.00th=[ 1452], 60.00th=[ 1452], | 70.00th=[ 2123], 80.00th=[ 2123], 90.00th=[ 2123], 95.00th=[ 2123], | 99.00th=[ 2123], 99.50th=[ 2123], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min=16062, max=16062, per=100.00%, avg=16062.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.14%, sys=2.34%, ctx=56, 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=2839KiB/s (2907kB/s), 731KiB/s-2129KiB/s (749kB/s-2180kB/s), io=16.0MiB (16.8MB), run=5603-5771msec WRITE: bw=5848KiB/s (5989kB/s), 1462KiB/s-2959KiB/s (1497kB/s-3030kB/s), io=32.0MiB (33.6MB), run=4153-5603msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144799: Mon Aug 31 15:18:15 2026 read: IOPS=0, BW=2634KiB/s (2697kB/s)(12.0MiB/4665msec) clat (msec): min=1192, max=1719, avg=1521.21, stdev=286.55 lat (msec): min=1192, max=1719, avg=1521.21, stdev=286.55 clat percentiles (msec): | 1.00th=[ 1200], 5.00th=[ 1200], 10.00th=[ 1200], 20.00th=[ 1200], | 30.00th=[ 1200], 40.00th=[ 1653], 50.00th=[ 1653], 60.00th=[ 1653], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7801, max= 8000, per=100.00%, avg=7900.50, stdev=140.71, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.04%, sys=9.86%, ctx=377, majf=0, minf=7 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=144800: Mon Aug 31 15:18:15 2026 read: IOPS=0, BW=924KiB/s (946kB/s)(4096KiB/4434msec) clat (nsec): min=1530.2M, max=1530.2M, avg=1530173207.00, stdev= 0.00 lat (nsec): min=1530.2M, max=1530.2M, avg=1530176425.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1536], 5.00th=[ 1536], 10.00th=[ 1536], 20.00th=[ 1536], | 30.00th=[ 1536], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7801, max= 7801, per=100.00%, avg=7801.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1848KiB/s (1892kB/s)(8192KiB/4434msec); 0 zone resets clat (msec): min=807, max=1902, avg=1354.99, stdev=774.81 lat (msec): min=807, max=1903, avg=1355.39, stdev=774.66 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 1905], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 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 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.05%, sys=3.23%, ctx=133, 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=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=144801: Mon Aug 31 15:18:15 2026 write: IOPS=0, BW=1950KiB/s (1997kB/s)(12.0MiB/6301msec); 0 zone resets clat (msec): min=356, max=3412, avg=2048.98, stdev=1554.23 lat (msec): min=357, max=3412, avg=2049.63, stdev=1554.25 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 2366], 50.00th=[ 2366], 60.00th=[ 2366], | 70.00th=[ 3406], 80.00th=[ 3406], 90.00th=[ 3406], 95.00th=[ 3406], | 99.00th=[ 3406], 99.50th=[ 3406], 99.90th=[ 3406], 99.95th=[ 3406], | 99.99th=[ 3406] 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%, >=2000=66.67% cpu : usr=0.00%, sys=1.83%, ctx=44, majf=0, minf=7 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=144802: Mon Aug 31 15:18:15 2026 write: IOPS=0, BW=2720KiB/s (2786kB/s)(12.0MiB/4517msec); 0 zone resets clat (msec): min=794, max=1806, avg=1441.78, stdev=561.96 lat (msec): min=794, max=1807, avg=1442.64, stdev=562.37 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7801, max= 8126, per=100.00%, avg=7963.50, stdev=229.81, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.95%, ctx=86, majf=0, minf=7 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=3512KiB/s (3596kB/s), 924KiB/s-2634KiB/s (946kB/s-2697kB/s), io=16.0MiB (16.8MB), run=4434-4665msec WRITE: bw=5200KiB/s (5325kB/s), 1848KiB/s-2720KiB/s (1892kB/s-2786kB/s), io=32.0MiB (33.6MB), run=4434-6301msec