== sanity test 398b: DIO and buffer IO race ============== 12:13:45 (1788884025) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.72451 s, 18.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=184618: Tue Sep 8 12:14:44 2026 read: IOPS=30, BW=123KiB/s (126kB/s)(5992KiB/48755msec) clat (usec): min=51, max=733204, avg=17396.96, stdev=20622.56 lat (usec): min=52, max=733205, avg=17397.63, stdev=20622.65 clat percentiles (usec): | 1.00th=[ 114], 5.00th=[ 7046], 10.00th=[ 8094], 20.00th=[ 9896], | 30.00th=[ 11469], 40.00th=[ 13173], 50.00th=[ 15008], 60.00th=[ 17171], | 70.00th=[ 19530], 80.00th=[ 22414], 90.00th=[ 28181], 95.00th=[ 34341], | 99.00th=[ 49546], 99.50th=[ 53216], 99.90th=[ 71828], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 13, max= 215, per=25.14%, avg=122.92, stdev=37.22, samples=97 iops : min= 3, max= 53, avg=30.35, stdev= 9.34, samples=97 write: IOPS=32, BW=129KiB/s (132kB/s)(6296KiB/48755msec); 0 zone resets clat (usec): min=579, max=90090, avg=14388.71, stdev=11116.29 lat (usec): min=580, max=90092, avg=14389.41, stdev=11116.34 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 2311], 10.00th=[ 2933], 20.00th=[ 4146], | 30.00th=[ 7242], 40.00th=[ 9503], 50.00th=[11863], 60.00th=[14746], | 70.00th=[17957], 80.00th=[22676], 90.00th=[29230], 95.00th=[34866], | 99.00th=[49546], 99.50th=[57410], 99.90th=[84411], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 55, max= 255, per=25.47%, avg=130.39, stdev=38.77, samples=96 iops : min= 13, max= 63, avg=32.22, stdev= 9.75, samples=96 lat (usec) : 100=0.33%, 250=0.55%, 500=0.03%, 750=0.29%, 1000=0.29% lat (msec) : 2=1.30%, 4=7.85%, 10=20.67%, 20=41.96%, 50=25.85% lat (msec) : 100=0.85%, 750=0.03% cpu : usr=0.09%, sys=26.06%, ctx=9277, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184619: Tue Sep 8 12:14:44 2026 read: IOPS=30, BW=123KiB/s (126kB/s)(5940KiB/48326msec) clat (usec): min=40, max=77379, avg=17441.87, stdev=9279.04 lat (usec): min=40, max=77380, avg=17442.42, stdev=9279.10 clat percentiles (usec): | 1.00th=[ 155], 5.00th=[ 7111], 10.00th=[ 7963], 20.00th=[ 9896], | 30.00th=[11600], 40.00th=[13829], 50.00th=[15926], 60.00th=[17695], | 70.00th=[20317], 80.00th=[23462], 90.00th=[28967], 95.00th=[35914], | 99.00th=[47449], 99.50th=[52691], 99.90th=[62653], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 6, max= 216, per=25.11%, avg=122.78, stdev=35.65, samples=96 iops : min= 1, max= 54, avg=30.32, stdev= 8.99, samples=96 write: IOPS=32, BW=131KiB/s (135kB/s)(6348KiB/48326msec); 0 zone resets clat (usec): min=648, max=728815, avg=14102.14, stdev=20814.69 lat (usec): min=649, max=728815, avg=14102.90, stdev=20814.73 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 2409], 10.00th=[ 2868], 20.00th=[ 3916], | 30.00th=[ 6587], 40.00th=[ 9241], 50.00th=[ 11076], 60.00th=[ 13698], | 70.00th=[ 16712], 80.00th=[ 21103], 90.00th=[ 28443], 95.00th=[ 34341], | 99.00th=[ 49546], 99.50th=[ 53216], 99.90th=[ 70779], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 6, max= 247, per=25.56%, avg=130.86, stdev=43.95, samples=96 iops : min= 1, max= 61, avg=32.34, stdev=11.03, samples=96 lat (usec) : 50=0.03%, 100=0.16%, 250=0.55%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.36% lat (msec) : 2=1.07%, 4=8.92%, 10=21.19%, 20=40.59%, 50=26.04% lat (msec) : 100=0.81%, 750=0.03% cpu : usr=0.09%, sys=26.31%, ctx=9237, 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=184620: Tue Sep 8 12:14:44 2026 read: IOPS=30, BW=123KiB/s (126kB/s)(6028KiB/49010msec) clat (usec): min=62, max=78821, avg=16973.97, stdev=9159.89 lat (usec): min=62, max=78821, avg=16974.55, stdev=9159.93 clat percentiles (usec): | 1.00th=[ 126], 5.00th=[ 6915], 10.00th=[ 8094], 20.00th=[ 9896], | 30.00th=[11338], 40.00th=[13304], 50.00th=[15270], 60.00th=[17433], | 70.00th=[19792], 80.00th=[22938], 90.00th=[28705], 95.00th=[34866], | 99.00th=[47973], 99.50th=[53216], 99.90th=[67634], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 23, max= 224, per=25.28%, avg=123.63, stdev=38.45, samples=96 iops : min= 5, max= 56, avg=30.53, stdev= 9.67, samples=96 write: IOPS=31, BW=128KiB/s (131kB/s)(6260KiB/49010msec); 0 zone resets clat (usec): min=572, max=753890, avg=14934.48, stdev=21538.50 lat (usec): min=573, max=753891, avg=14935.73, stdev=21538.65 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 2540], 10.00th=[ 2999], 20.00th=[ 4359], | 30.00th=[ 7373], 40.00th=[ 9896], 50.00th=[ 12387], 60.00th=[ 14877], | 70.00th=[ 18220], 80.00th=[ 22414], 90.00th=[ 29230], 95.00th=[ 34341], | 99.00th=[ 50594], 99.50th=[ 53740], 99.90th=[ 68682], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 47, max= 215, per=25.04%, avg=128.23, stdev=34.14, samples=96 iops : min= 11, max= 53, avg=31.68, stdev= 8.54, samples=96 lat (usec) : 100=0.23%, 250=0.85%, 500=0.03%, 750=0.07%, 1000=0.33% lat (msec) : 2=0.81%, 4=8.14%, 10=20.54%, 20=41.76%, 50=26.40% lat (msec) : 100=0.81%, 1000=0.03% cpu : usr=0.08%, sys=26.03%, ctx=9436, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184621: Tue Sep 8 12:14:44 2026 read: IOPS=31, BW=124KiB/s (127kB/s)(6052KiB/48793msec) clat (usec): min=30, max=82037, avg=17071.58, stdev=9522.95 lat (usec): min=30, max=82038, avg=17072.13, stdev=9522.99 clat percentiles (usec): | 1.00th=[ 110], 5.00th=[ 6521], 10.00th=[ 7832], 20.00th=[ 9634], | 30.00th=[11469], 40.00th=[13435], 50.00th=[15533], 60.00th=[17433], | 70.00th=[19792], 80.00th=[22938], 90.00th=[28181], 95.00th=[35390], | 99.00th=[50070], 99.50th=[57934], 99.90th=[69731], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 48, max= 232, per=25.59%, avg=125.12, stdev=35.36, samples=96 iops : min= 12, max= 58, avg=30.91, stdev= 8.91, samples=96 write: IOPS=31, BW=128KiB/s (131kB/s)(6236KiB/48793msec); 0 zone resets clat (usec): min=662, max=751997, avg=14691.57, stdev=21488.72 lat (usec): min=663, max=751999, avg=14692.32, stdev=21488.77 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 2507], 10.00th=[ 2900], 20.00th=[ 3949], | 30.00th=[ 6915], 40.00th=[ 9634], 50.00th=[ 12256], 60.00th=[ 14877], | 70.00th=[ 18220], 80.00th=[ 22152], 90.00th=[ 28705], 95.00th=[ 34866], | 99.00th=[ 48497], 99.50th=[ 53216], 99.90th=[ 69731], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 31, max= 224, per=25.16%, avg=128.81, stdev=40.32, samples=96 iops : min= 7, max= 56, avg=31.82, stdev=10.15, samples=96 lat (usec) : 50=0.07%, 100=0.39%, 250=0.75%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=0.81%, 4=9.11%, 10=20.44%, 20=40.40%, 50=26.73% lat (msec) : 100=0.85%, 1000=0.03% cpu : usr=0.10%, sys=25.93%, ctx=9314, 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=490KiB/s (502kB/s), 123KiB/s-124KiB/s (126kB/s-127kB/s), io=23.4MiB (24.6MB), run=48326-49010msec WRITE: bw=513KiB/s (525kB/s), 128KiB/s-131KiB/s (131kB/s-135kB/s), io=24.6MiB (25.7MB), run=48326-49010msec rand-rw: (groupid=0, jobs=1): err= 0: pid=184613: Tue Sep 8 12:14:49 2026 read: IOPS=27, BW=110KiB/s (112kB/s)(5992KiB/54663msec) clat (msec): min=2, max=741, avg=16.08, stdev=22.82 lat (msec): min=2, max=741, avg=16.08, stdev=22.82 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 7], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 18], 80.00th=[ 26], 90.00th=[ 36], 95.00th=[ 44], | 99.00th=[ 58], 99.50th=[ 63], 99.90th=[ 109], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 23, max= 432, per=24.79%, avg=108.84, stdev=83.46, samples=107 iops : min= 5, max= 108, avg=26.80, stdev=20.99, samples=107 write: IOPS=28, BW=115KiB/s (118kB/s)(6296KiB/54663msec); 0 zone resets clat (usec): min=3791, max=89182, avg=19308.95, stdev=14023.85 lat (usec): min=3792, max=89183, avg=19309.73, stdev=14023.96 clat percentiles (usec): | 1.00th=[ 4424], 5.00th=[ 5080], 10.00th=[ 5604], 20.00th=[ 6587], | 30.00th=[ 8455], 40.00th=[12256], 50.00th=[15795], 60.00th=[20055], | 70.00th=[24249], 80.00th=[30016], 90.00th=[36963], 95.00th=[46400], | 99.00th=[67634], 99.50th=[72877], 99.90th=[86508], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 23, max= 464, per=24.93%, avg=114.45, stdev=85.51, samples=107 iops : min= 5, max= 116, avg=28.21, stdev=21.49, samples=107 lat (msec) : 4=5.05%, 10=33.17%, 20=28.42%, 50=30.37%, 100=2.93% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.08%, sys=12.10%, ctx=5499, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184614: Tue Sep 8 12:14:49 2026 read: IOPS=27, BW=109KiB/s (112kB/s)(5940KiB/54286msec) clat (msec): min=2, max=739, avg=15.66, stdev=22.51 lat (msec): min=2, max=739, avg=15.67, stdev=22.51 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 7], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 34], 95.00th=[ 41], | 99.00th=[ 60], 99.50th=[ 64], 99.90th=[ 89], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 16, max= 480, per=25.12%, avg=110.26, stdev=86.37, samples=107 iops : min= 4, max= 120, avg=27.16, stdev=21.73, samples=107 write: IOPS=29, BW=117KiB/s (120kB/s)(6348KiB/54286msec); 0 zone resets clat (usec): min=3819, max=95822, avg=19433.25, stdev=14348.21 lat (usec): min=3819, max=95824, avg=19434.08, stdev=14348.25 clat percentiles (usec): | 1.00th=[ 4424], 5.00th=[ 5145], 10.00th=[ 5604], 20.00th=[ 6587], | 30.00th=[ 9241], 40.00th=[12518], 50.00th=[15401], 60.00th=[19530], | 70.00th=[24249], 80.00th=[30016], 90.00th=[38011], 95.00th=[47449], | 99.00th=[69731], 99.50th=[79168], 99.90th=[93848], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 39, max= 440, per=25.65%, avg=117.74, stdev=85.45, samples=107 iops : min= 9, max= 110, avg=29.03, stdev=21.48, samples=107 lat (msec) : 4=5.31%, 10=31.84%, 20=30.53%, 50=29.10%, 100=3.19% lat (msec) : 750=0.03% cpu : usr=0.10%, sys=12.19%, ctx=5421, 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=184615: Tue Sep 8 12:14:49 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(6028KiB/54632msec) clat (msec): min=2, max=130, avg=15.48, stdev=12.95 lat (msec): min=2, max=130, avg=15.48, stdev=12.95 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 5], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 19], 80.00th=[ 25], 90.00th=[ 35], 95.00th=[ 41], | 99.00th=[ 58], 99.50th=[ 62], 99.90th=[ 73], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 31, max= 448, per=25.07%, avg=110.04, stdev=87.55, samples=107 iops : min= 7, max= 112, avg=27.10, stdev=22.02, samples=107 write: IOPS=28, BW=115KiB/s (117kB/s)(6260KiB/54632msec); 0 zone resets clat (msec): min=3, max=745, avg=19.89, stdev=23.44 lat (msec): min=3, max=745, avg=19.89, stdev=23.44 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 30], 90.00th=[ 39], 95.00th=[ 47], | 99.00th=[ 72], 99.50th=[ 77], 99.90th=[ 121], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 31, max= 408, per=24.89%, avg=114.22, stdev=84.78, samples=107 iops : min= 7, max= 102, avg=28.15, stdev=21.32, samples=107 lat (msec) : 4=5.01%, 10=33.79%, 20=28.22%, 50=29.79%, 100=3.09% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.10%, sys=12.13%, ctx=5489, 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=184616: Tue Sep 8 12:14:49 2026 read: IOPS=27, BW=111KiB/s (114kB/s)(6052KiB/54598msec) clat (msec): min=2, max=130, avg=15.38, stdev=13.02 lat (msec): min=2, max=130, avg=15.38, stdev=13.02 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 5], | 30.00th=[ 7], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 34], 95.00th=[ 42], | 99.00th=[ 61], 99.50th=[ 67], 99.90th=[ 80], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 23, max= 448, per=25.18%, avg=110.56, stdev=85.08, samples=107 iops : min= 5, max= 112, avg=27.23, stdev=21.39, samples=107 write: IOPS=28, BW=114KiB/s (117kB/s)(6236KiB/54598msec); 0 zone resets clat (msec): min=3, max=745, avg=19.98, stdev=23.27 lat (msec): min=3, max=745, avg=19.98, stdev=23.27 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 31], 90.00th=[ 39], 95.00th=[ 47], | 99.00th=[ 70], 99.50th=[ 77], 99.90th=[ 87], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 31, max= 440, per=24.90%, avg=114.30, stdev=86.15, samples=107 iops : min= 7, max= 110, avg=28.17, stdev=21.67, samples=107 lat (msec) : 4=4.79%, 10=33.53%, 20=28.74%, 50=29.69%, 100=3.19% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.09%, sys=12.12%, ctx=5531, 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=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=439KiB/s (450kB/s), 109KiB/s-111KiB/s (112kB/s-114kB/s), io=23.4MiB (24.6MB), run=54286-54663msec WRITE: bw=460KiB/s (471kB/s), 114KiB/s-117KiB/s (117kB/s-120kB/s), io=24.6MiB (25.7MB), run=54286-54663msec 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=184656: Tue Sep 8 12:15:07 2026 read: IOPS=28, BW=463KiB/s (474kB/s)(5920KiB/12797msec) clat (usec): min=69, max=60240, avg=17238.47, stdev=8689.34 lat (usec): min=69, max=60241, avg=17239.01, stdev=8689.38 clat percentiles (usec): | 1.00th=[ 83], 5.00th=[ 6783], 10.00th=[ 8717], 20.00th=[10945], | 30.00th=[12649], 40.00th=[14353], 50.00th=[16319], 60.00th=[17957], | 70.00th=[19792], 80.00th=[22152], 90.00th=[27919], 95.00th=[33817], | 99.00th=[48497], 99.50th=[53740], 99.90th=[60031], 99.95th=[60031], | 99.99th=[60031] bw ( KiB/s): min= 223, max= 734, per=25.22%, avg=462.04, stdev=119.38, samples=25 iops : min= 13, max= 45, avg=28.36, stdev= 7.39, samples=25 write: IOPS=31, BW=498KiB/s (510kB/s)(6368KiB/12797msec); 0 zone resets clat (usec): min=1162, max=56384, avg=15914.92, stdev=10422.10 lat (usec): min=1164, max=56385, avg=15915.99, stdev=10422.12 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 3982], 10.00th=[ 4686], 20.00th=[ 6390], | 30.00th=[ 9634], 40.00th=[11469], 50.00th=[13435], 60.00th=[16057], | 70.00th=[19530], 80.00th=[23987], 90.00th=[30540], 95.00th=[36439], | 99.00th=[52691], 99.50th=[55837], 99.90th=[56361], 99.95th=[56361], | 99.99th=[56361] bw ( KiB/s): min= 256, max= 701, per=25.94%, avg=500.04, stdev=112.10, samples=25 iops : min= 16, max= 43, avg=30.72, stdev= 7.03, samples=25 lat (usec) : 100=0.91%, 250=1.30% lat (msec) : 2=0.65%, 4=1.95%, 10=18.75%, 20=47.14%, 50=28.52% lat (msec) : 100=0.78% cpu : usr=0.10%, sys=27.49%, ctx=2839, 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=184658: Tue Sep 8 12:15:07 2026 read: IOPS=28, BW=464KiB/s (475kB/s)(5744KiB/12391msec) clat (usec): min=87, max=62620, avg=17349.16, stdev=8202.67 lat (usec): min=87, max=62621, avg=17349.71, stdev=8202.69 clat percentiles (usec): | 1.00th=[ 109], 5.00th=[ 7504], 10.00th=[ 9110], 20.00th=[10945], | 30.00th=[12256], 40.00th=[13829], 50.00th=[15795], 60.00th=[18744], | 70.00th=[21103], 80.00th=[23462], 90.00th=[27395], 95.00th=[31065], | 99.00th=[42730], 99.50th=[51643], 99.90th=[62653], 99.95th=[62653], | 99.99th=[62653] bw ( KiB/s): min= 287, max= 638, per=25.29%, avg=463.38, stdev=86.94, samples=24 iops : min= 17, max= 39, avg=28.46, stdev= 5.41, samples=24 write: IOPS=33, BW=528KiB/s (541kB/s)(6544KiB/12391msec); 0 zone resets clat (usec): min=984, max=54998, avg=14950.24, stdev=9844.85 lat (usec): min=985, max=54999, avg=14951.35, stdev=9844.84 clat percentiles (usec): | 1.00th=[ 2900], 5.00th=[ 4113], 10.00th=[ 4555], 20.00th=[ 5932], | 30.00th=[ 8848], 40.00th=[10552], 50.00th=[12256], 60.00th=[14877], | 70.00th=[17957], 80.00th=[22938], 90.00th=[28967], 95.00th=[34866], | 99.00th=[45351], 99.50th=[51119], 99.90th=[54789], 99.95th=[54789], | 99.99th=[54789] bw ( KiB/s): min= 351, max= 798, per=26.92%, avg=519.04, stdev=129.90, samples=24 iops : min= 21, max= 49, avg=31.96, stdev= 8.12, samples=24 lat (usec) : 100=0.39%, 250=0.78%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.13%, 4=1.82%, 10=23.05%, 20=43.88%, 50=29.04% lat (msec) : 100=0.65% cpu : usr=0.13%, sys=28.49%, ctx=2784, 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=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=184659: Tue Sep 8 12:15:07 2026 read: IOPS=29, BW=479KiB/s (490kB/s)(6256KiB/13068msec) clat (usec): min=29, max=83170, avg=17295.87, stdev=9676.09 lat (usec): min=30, max=83170, avg=17296.47, stdev=9676.12 clat percentiles (usec): | 1.00th=[ 70], 5.00th=[ 465], 10.00th=[ 8848], 20.00th=[10814], | 30.00th=[12649], 40.00th=[14353], 50.00th=[16057], 60.00th=[17695], | 70.00th=[19530], 80.00th=[22938], 90.00th=[27919], 95.00th=[33424], | 99.00th=[53216], 99.50th=[66847], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 256, max= 704, per=26.34%, avg=482.64, stdev=121.64, samples=25 iops : min= 16, max= 44, avg=29.64, stdev= 7.56, samples=25 write: IOPS=28, BW=462KiB/s (473kB/s)(6032KiB/13068msec); 0 zone resets clat (usec): min=874, max=64883, avg=16676.33, stdev=10778.96 lat (usec): min=875, max=64885, avg=16677.72, stdev=10779.07 clat percentiles (usec): | 1.00th=[ 2114], 5.00th=[ 3818], 10.00th=[ 4555], 20.00th=[ 7373], | 30.00th=[ 9765], 40.00th=[11863], 50.00th=[14091], 60.00th=[16581], | 70.00th=[20841], 80.00th=[26084], 90.00th=[31589], 95.00th=[36963], | 99.00th=[47449], 99.50th=[55313], 99.90th=[64750], 99.95th=[64750], | 99.99th=[64750] bw ( KiB/s): min= 255, max= 576, per=23.45%, avg=452.16, stdev=94.31, samples=25 iops : min= 15, max= 36, avg=27.76, stdev= 5.99, samples=25 lat (usec) : 50=0.26%, 100=0.65%, 250=1.56%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.26%, 4=3.12%, 10=17.19%, 20=46.61%, 50=29.17% lat (msec) : 100=0.91% cpu : usr=0.08%, sys=27.30%, ctx=2871, 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=184660: Tue Sep 8 12:15:07 2026 read: IOPS=30, BW=484KiB/s (495kB/s)(6032KiB/12466msec) clat (usec): min=49, max=57927, avg=17088.45, stdev=8951.30 lat (usec): min=49, max=57927, avg=17089.05, stdev=8951.33 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 125], 10.00th=[ 8717], 20.00th=[10945], | 30.00th=[12780], 40.00th=[14091], 50.00th=[16057], 60.00th=[18220], | 70.00th=[20055], 80.00th=[23200], 90.00th=[28705], 95.00th=[33162], | 99.00th=[45876], 99.50th=[47973], 99.90th=[57934], 99.95th=[57934], | 99.99th=[57934] bw ( KiB/s): min= 223, max= 608, per=26.09%, avg=478.00, stdev=105.18, samples=24 iops : min= 13, max= 38, avg=29.38, stdev= 6.57, samples=24 write: IOPS=31, BW=502KiB/s (514kB/s)(6256KiB/12466msec); 0 zone resets clat (usec): min=1093, max=68134, avg=15259.37, stdev=10227.82 lat (usec): min=1094, max=68135, avg=15260.54, stdev=10227.86 clat percentiles (usec): | 1.00th=[ 2442], 5.00th=[ 3720], 10.00th=[ 4424], 20.00th=[ 5604], | 30.00th=[ 8848], 40.00th=[10814], 50.00th=[12780], 60.00th=[15533], | 70.00th=[19268], 80.00th=[23725], 90.00th=[29230], 95.00th=[34866], | 99.00th=[44303], 99.50th=[52691], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 288, max= 702, per=26.09%, avg=503.04, stdev=127.39, samples=24 iops : min= 18, max= 43, avg=30.96, stdev= 7.98, samples=24 lat (usec) : 50=0.13%, 100=0.52%, 250=2.60%, 750=0.26% lat (msec) : 2=0.39%, 4=3.39%, 10=18.10%, 20=45.31%, 50=28.78% lat (msec) : 100=0.52% cpu : usr=0.12%, sys=27.70%, ctx=2769, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1833KiB/s (1877kB/s), 463KiB/s-484KiB/s (474kB/s-495kB/s), io=23.4MiB (24.5MB), run=12391-13068msec WRITE: bw=1928KiB/s (1975kB/s), 462KiB/s-528KiB/s (473kB/s-541kB/s), io=24.6MiB (25.8MB), run=12391-13068msec fio: pid=184654, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=184653: Tue Sep 8 12:15:09 2026 read: IOPS=25, BW=411KiB/s (421kB/s)(5920KiB/14395msec) clat (usec): min=3355, max=71790, avg=16294.70, stdev=11899.90 lat (usec): min=3356, max=71791, avg=16295.32, stdev=11899.89 clat percentiles (usec): | 1.00th=[ 4113], 5.00th=[ 5604], 10.00th=[ 6718], 20.00th=[ 8094], | 30.00th=[ 9241], 40.00th=[10421], 50.00th=[12125], 60.00th=[14222], | 70.00th=[16712], 80.00th=[21103], 90.00th=[32113], 95.00th=[42206], | 99.00th=[61080], 99.50th=[67634], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 190, max= 928, per=24.61%, avg=395.93, stdev=146.36, samples=28 iops : min= 11, max= 58, avg=24.36, stdev= 9.24, samples=28 write: IOPS=27, BW=442KiB/s (453kB/s)(6368KiB/14395msec); 0 zone resets clat (usec): min=3814, max=68698, avg=20842.89, stdev=12309.97 lat (usec): min=3814, max=68700, avg=20844.41, stdev=12309.88 clat percentiles (usec): | 1.00th=[ 5407], 5.00th=[ 7308], 10.00th=[ 8455], 20.00th=[10421], | 30.00th=[12125], 40.00th=[14484], 50.00th=[17957], 60.00th=[20579], | 70.00th=[24773], 80.00th=[31065], 90.00th=[38011], 95.00th=[45351], | 99.00th=[62653], 99.50th=[65799], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 256, max= 832, per=25.26%, avg=425.61, stdev=141.51, samples=28 iops : min= 16, max= 52, avg=26.21, stdev= 8.93, samples=28 lat (msec) : 4=0.26%, 10=25.78%, 20=41.28%, 50=29.30%, 100=3.39% cpu : usr=0.08%, sys=12.87%, ctx=1460, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=184654: Tue Sep 8 12:15:09 2026 read: IOPS=22, BW=365KiB/s (374kB/s)(5072KiB/13895msec) clat (usec): min=4191, max=73634, avg=18251.29, stdev=11856.84 lat (usec): min=4191, max=73635, avg=18251.93, stdev=11856.86 clat percentiles (usec): | 1.00th=[ 5932], 5.00th=[ 7439], 10.00th=[ 8455], 20.00th=[ 9372], | 30.00th=[10421], 40.00th=[11863], 50.00th=[13304], 60.00th=[16319], | 70.00th=[20579], 80.00th=[26346], 90.00th=[38011], 95.00th=[42730], | 99.00th=[51643], 99.50th=[65274], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 159, max= 512, per=22.18%, avg=356.85, stdev=99.98, samples=27 iops : min= 9, max= 32, avg=21.89, stdev= 6.25, samples=27 write: IOPS=25, BW=412KiB/s (422kB/s)(5728KiB/13895msec); 0 zone resets clat (usec): min=5596, max=83065, avg=22550.85, stdev=13002.61 lat (usec): min=5598, max=83066, avg=22552.37, stdev=13002.75 clat percentiles (usec): | 1.00th=[ 7504], 5.00th=[ 8979], 10.00th=[ 9765], 20.00th=[11600], | 30.00th=[13435], 40.00th=[16450], 50.00th=[19268], 60.00th=[22152], | 70.00th=[26346], 80.00th=[33162], 90.00th=[39584], 95.00th=[47973], | 99.00th=[66323], 99.50th=[74974], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 158, max= 960, per=23.99%, avg=404.22, stdev=144.70, samples=27 iops : min= 9, max= 60, avg=24.85, stdev= 9.15, samples=27 lat (msec) : 10=17.60%, 20=42.90%, 50=36.24%, 100=3.11% cpu : usr=0.10%, sys=12.11%, ctx=1178, 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=318,358,0,0 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=184655: Tue Sep 8 12:15:09 2026 read: IOPS=27, BW=433KiB/s (444kB/s)(6256KiB/14444msec) clat (usec): min=2881, max=58770, avg=16384.34, stdev=11400.82 lat (usec): min=2882, max=58771, avg=16385.15, stdev=11400.94 clat percentiles (usec): | 1.00th=[ 3556], 5.00th=[ 4883], 10.00th=[ 5866], 20.00th=[ 8094], | 30.00th=[ 9241], 40.00th=[10552], 50.00th=[12125], 60.00th=[14222], | 70.00th=[18744], 80.00th=[24511], 90.00th=[34866], 95.00th=[41157], | 99.00th=[52167], 99.50th=[57410], 99.90th=[58983], 99.95th=[58983], | 99.99th=[58983] bw ( KiB/s): min= 190, max= 1280, per=26.11%, avg=420.04, stdev=211.46, samples=28 iops : min= 11, max= 80, avg=25.86, stdev=13.32, samples=28 write: IOPS=26, BW=418KiB/s (428kB/s)(6032KiB/14444msec); 0 zone resets clat (usec): min=4042, max=83678, avg=21103.92, stdev=13002.26 lat (usec): min=4043, max=83679, avg=21105.36, stdev=13002.24 clat percentiles (usec): | 1.00th=[ 4621], 5.00th=[ 6849], 10.00th=[ 8291], 20.00th=[10159], | 30.00th=[11600], 40.00th=[15008], 50.00th=[17433], 60.00th=[21890], | 70.00th=[25822], 80.00th=[30278], 90.00th=[38011], 95.00th=[49021], | 99.00th=[61080], 99.50th=[69731], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 255, max= 704, per=23.34%, avg=393.25, stdev=107.99, samples=28 iops : min= 15, max= 44, avg=24.18, stdev= 6.87, samples=28 lat (msec) : 4=0.78%, 10=26.69%, 20=37.50%, 50=31.77%, 100=3.26% cpu : usr=0.12%, sys=12.81%, ctx=1411, 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=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=184657: Tue Sep 8 12:15:09 2026 read: IOPS=26, BW=417KiB/s (427kB/s)(6032KiB/14464msec) clat (usec): min=2493, max=59597, avg=16274.32, stdev=11109.62 lat (usec): min=2494, max=59598, avg=16275.03, stdev=11109.61 clat percentiles (usec): | 1.00th=[ 2704], 5.00th=[ 5014], 10.00th=[ 5997], 20.00th=[ 8094], | 30.00th=[ 9372], 40.00th=[10421], 50.00th=[12125], 60.00th=[14353], | 70.00th=[17957], 80.00th=[25822], 90.00th=[33817], 95.00th=[39584], | 99.00th=[53740], 99.50th=[57934], 99.90th=[59507], 99.95th=[59507], | 99.99th=[59507] bw ( KiB/s): min= 127, max= 928, per=24.47%, avg=393.75, stdev=168.81, samples=28 iops : min= 7, max= 58, avg=24.21, stdev=10.64, samples=28 write: IOPS=27, BW=433KiB/s (443kB/s)(6256KiB/14464msec); 0 zone resets clat (usec): min=4432, max=82153, avg=21156.24, stdev=12339.01 lat (usec): min=4432, max=82154, avg=21157.82, stdev=12338.96 clat percentiles (usec): | 1.00th=[ 4817], 5.00th=[ 6980], 10.00th=[ 8160], 20.00th=[10552], | 30.00th=[12780], 40.00th=[15139], 50.00th=[18220], 60.00th=[21890], | 70.00th=[25560], 80.00th=[31065], 90.00th=[38536], 95.00th=[44303], | 99.00th=[61080], 99.50th=[72877], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 223, max= 992, per=24.57%, avg=413.93, stdev=146.39, samples=28 iops : min= 13, max= 62, avg=25.46, stdev= 9.25, samples=28 lat (msec) : 4=1.43%, 10=25.52%, 20=36.98%, 50=34.38%, 100=1.69% cpu : usr=0.11%, sys=12.65%, ctx=1440, 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=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=1610KiB/s (1648kB/s), 365KiB/s-433KiB/s (374kB/s-444kB/s), io=22.7MiB (23.8MB), run=13895-14464msec WRITE: bw=1686KiB/s (1726kB/s), 412KiB/s-442KiB/s (422kB/s-453kB/s), io=23.8MiB (24.0MB), run=13895-14464msec 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=184666: Tue Sep 8 12:15:18 2026 read: IOPS=2, BW=3032KiB/s (3105kB/s)(7168KiB/2364msec) clat (msec): min=127, max=234, avg=174.58, stdev=40.31 lat (msec): min=127, max=234, avg=174.58, stdev=40.31 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 140], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 157], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 213], 90.00th=[ 234], 95.00th=[ 234], | 99.00th=[ 234], 99.50th=[ 234], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 1796, max= 5180, per=43.89%, avg=2764.50, stdev=1614.47, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=2, BW=2166KiB/s (2218kB/s)(5120KiB/2364msec); 0 zone resets clat (msec): min=141, max=338, avg=220.20, stdev=82.89 lat (msec): min=141, max=338, avg=220.25, stdev=82.90 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 190], 60.00th=[ 190], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 2039, max= 5389, per=35.80%, avg=3157.00, stdev=1932.97, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 250=83.33%, 500=16.67% cpu : usr=0.04%, sys=57.09%, ctx=646, 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=184667: Tue Sep 8 12:15:18 2026 read: IOPS=0, BW=630KiB/s (645kB/s)(2048KiB/3251msec) clat (msec): min=117, max=140, avg=128.77, stdev=16.21 lat (msec): min=117, max=140, avg=128.77, stdev=16.21 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 117], 60.00th=[ 140], | 70.00th=[ 140], 80.00th=[ 140], 90.00th=[ 140], 95.00th=[ 140], | 99.00th=[ 140], 99.50th=[ 140], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 1726, max= 2048, per=29.96%, avg=1887.00, stdev=227.69, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3150KiB/s (3225kB/s)(10.0MiB/3251msec); 0 zone resets clat (msec): min=92, max=675, avg=296.37, stdev=205.32 lat (msec): min=92, max=675, avg=296.43, stdev=205.31 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 106], | 30.00th=[ 130], 40.00th=[ 157], 50.00th=[ 213], 60.00th=[ 259], | 70.00th=[ 305], 80.00th=[ 460], 90.00th=[ 575], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1796, max= 6144, per=41.18%, avg=3631.60, stdev=1776.31, samples=5 iops : min= 1, max= 6, avg= 3.00, stdev= 2.12, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=44.00%, ctx=86, 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=184668: Tue Sep 8 12:15:18 2026 read: IOPS=2, BW=2657KiB/s (2721kB/s)(6144KiB/2312msec) clat (usec): min=388, max=163339, avg=71154.51, stdev=74416.03 lat (usec): min=388, max=163340, avg=71155.29, stdev=74416.29 clat percentiles (usec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 474], | 30.00th=[ 474], 40.00th=[ 33424], 50.00th=[ 33424], 60.00th=[ 69731], | 70.00th=[158335], 80.00th=[158335], 90.00th=[162530], 95.00th=[162530], | 99.00th=[162530], 99.50th=[162530], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 2043, max= 7185, per=73.25%, avg=4614.00, stdev=3635.94, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 write: IOPS=2, BW=2657KiB/s (2721kB/s)(6144KiB/2312msec); 0 zone resets clat (msec): min=142, max=730, avg=308.13, stdev=216.69 lat (msec): min=142, max=730, avg=308.18, stdev=216.69 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 253], 50.00th=[ 253], 60.00th=[ 279], | 70.00th=[ 296], 80.00th=[ 296], 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= 3447, max= 4087, per=42.05%, avg=3708.67, stdev=335.57, samples=3 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=3 lat (usec) : 500=16.67% lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=47.30%, ctx=354, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184669: Tue Sep 8 12:15:18 2026 read: IOPS=2, BW=2115KiB/s (2166kB/s)(5120KiB/2421msec) clat (usec): min=372, max=226892, avg=163465.93, stdev=93105.71 lat (usec): min=374, max=226893, avg=163466.96, stdev=93105.55 clat percentiles (usec): | 1.00th=[ 371], 5.00th=[ 371], 10.00th=[ 371], 20.00th=[ 371], | 30.00th=[177210], 40.00th=[177210], 50.00th=[198181], 60.00th=[198181], | 70.00th=[214959], 80.00th=[214959], 90.00th=[227541], 95.00th=[227541], | 99.00th=[227541], 99.50th=[227541], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 3592, max= 4087, per=60.95%, avg=3839.50, stdev=350.02, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2961KiB/s (3032kB/s)(7168KiB/2421msec); 0 zone resets clat (msec): min=137, max=488, avg=227.13, stdev=123.26 lat (msec): min=137, max=488, avg=227.19, stdev=123.26 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 148], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 190], 60.00th=[ 218], | 70.00th=[ 218], 80.00th=[ 257], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 1723, max= 6119, per=45.09%, avg=3976.33, stdev=2200.09, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=75.00%, 500=16.67% cpu : usr=0.00%, sys=55.62%, ctx=361, 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=6300KiB/s (6451kB/s), 630KiB/s-3032KiB/s (645kB/s-3105kB/s), io=20.0MiB (20.0MB), run=2312-3251msec WRITE: bw=8819KiB/s (9031kB/s), 2166KiB/s-3150KiB/s (2218kB/s-3225kB/s), io=28.0MiB (29.4MB), run=2312-3251msec rand-rw: (groupid=0, jobs=1): err= 0: pid=184671: Tue Sep 8 12:15:18 2026 read: IOPS=2, BW=2538KiB/s (2599kB/s)(7168KiB/2824msec) clat (msec): min=48, max=509, avg=217.45, stdev=178.41 lat (msec): min=48, max=509, avg=217.45, stdev=178.41 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 54], | 30.00th=[ 83], 40.00th=[ 83], 50.00th=[ 180], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 388], 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= 1747, max= 4096, per=42.31%, avg=2482.50, stdev=1084.72, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1813KiB/s (1857kB/s)(5120KiB/2824msec); 0 zone resets clat (msec): min=67, max=565, avg=234.12, stdev=195.48 lat (msec): min=67, max=565, avg=234.20, stdev=195.49 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 68], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 184], 60.00th=[ 184], | 70.00th=[ 232], 80.00th=[ 232], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 2019, max= 4079, per=37.12%, avg=3049.00, stdev=1456.64, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 50=8.33%, 100=25.00%, 250=33.33%, 500=16.67%, 750=16.67% cpu : usr=0.04%, sys=23.38%, ctx=144, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=184672: Tue Sep 8 12:15:18 2026 read: IOPS=0, BW=595KiB/s (609kB/s)(2048KiB/3442msec) clat (msec): min=46, max=348, avg=197.37, stdev=213.58 lat (msec): min=46, max=348, avg=197.37, stdev=213.58 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 47], | 30.00th=[ 47], 40.00th=[ 47], 50.00th=[ 47], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 351], 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= 1753, max= 2048, per=32.39%, avg=1900.50, stdev=208.60, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2975KiB/s (3046kB/s)(10.0MiB/3442msec); 0 zone resets clat (msec): min=48, max=1085, avg=291.76, stdev=352.27 lat (msec): min=48, max=1085, avg=291.83, stdev=352.27 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 56], | 30.00th=[ 57], 40.00th=[ 106], 50.00th=[ 140], 60.00th=[ 142], | 70.00th=[ 171], 80.00th=[ 359], 90.00th=[ 760], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2019, max= 8192, per=49.71%, avg=4083.33, stdev=3558.22, samples=3 iops : min= 1, max= 8, avg= 3.33, stdev= 4.04, samples=3 lat (msec) : 50=16.67%, 100=16.67%, 250=33.33%, 500=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.03%, sys=18.11%, ctx=131, 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=184673: Tue Sep 8 12:15:18 2026 read: IOPS=1, BW=1769KiB/s (1812kB/s)(6144KiB/3473msec) clat (msec): min=43, max=432, avg=226.20, stdev=181.45 lat (msec): min=43, max=432, avg=226.20, stdev=181.45 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 50], | 30.00th=[ 50], 40.00th=[ 107], 50.00th=[ 107], 60.00th=[ 309], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 2039, max= 4096, per=52.28%, avg=3067.50, stdev=1454.52, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1769KiB/s (1812kB/s)(6144KiB/3473msec); 0 zone resets clat (msec): min=61, max=1350, avg=346.92, stdev=516.28 lat (msec): min=61, max=1351, avg=346.99, stdev=516.28 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 69], | 30.00th=[ 69], 40.00th=[ 69], 50.00th=[ 69], 60.00th=[ 72], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 2048, max= 3379, per=30.33%, avg=2491.67, stdev=768.45, samples=3 iops : min= 2, max= 3, avg= 2.33, stdev= 0.58, samples=3 lat (msec) : 50=16.67%, 100=33.33%, 250=8.33%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=11.38%, ctx=331, 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=184674: Tue Sep 8 12:15:18 2026 read: IOPS=1, BW=1467KiB/s (1502kB/s)(5120KiB/3490msec) clat (msec): min=24, max=332, avg=121.94, stdev=121.22 lat (msec): min=24, max=332, avg=121.94, stdev=121.22 clat percentiles (msec): | 1.00th=[ 25], 5.00th=[ 25], 10.00th=[ 25], 20.00th=[ 25], | 30.00th=[ 72], 40.00th=[ 72], 50.00th=[ 78], 60.00th=[ 78], | 70.00th=[ 105], 80.00th=[ 105], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 4096, max= 4096, per=69.80%, avg=4096.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2054KiB/s (2103kB/s)(7168KiB/3490msec); 0 zone resets clat (msec): min=60, max=1033, avg=392.12, stdev=361.86 lat (msec): min=60, max=1033, avg=392.18, stdev=361.87 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 64], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 351], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 651], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1732, max= 2048, per=23.85%, avg=1959.50, stdev=152.15, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 50=8.33%, 100=33.33%, 250=16.67%, 500=25.00%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=16.25%, ctx=169, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5868KiB/s (6009kB/s), 595KiB/s-2538KiB/s (609kB/s-2599kB/s), io=20.0MiB (20.0MB), run=2824-3490msec WRITE: bw=8215KiB/s (8413kB/s), 1769KiB/s-2975KiB/s (1812kB/s-3046kB/s), io=28.0MiB (29.4MB), run=2824-3490msec 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=184680: Tue Sep 8 12:15:27 2026 read: IOPS=1, BW=8063KiB/s (8257kB/s)(12.0MiB/1524msec) clat (msec): min=384, max=632, avg=500.45, stdev=124.85 lat (msec): min=384, max=632, avg=500.45, stdev=124.85 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 485], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=20.09%, ctx=60, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=184681: Tue Sep 8 12:15:27 2026 read: IOPS=0, BW=1857KiB/s (1901kB/s)(4096KiB/2206msec) clat (nsec): min=1111.7M, max=1111.7M, avg=1111681807.00, stdev= 0.00 lat (nsec): min=1111.7M, max=1111.7M, avg=1111684315.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 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= 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=3714KiB/s (3803kB/s)(8192KiB/2206msec); 0 zone resets clat (msec): min=443, max=612, avg=528.01, stdev=119.95 lat (msec): min=443, max=613, avg=528.28, stdev=119.96 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 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= 8192, max= 8192, per=55.15%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.24%, ctx=62, 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=184682: Tue Sep 8 12:15:27 2026 write: IOPS=1, BW=6257KiB/s (6407kB/s)(12.0MiB/1964msec); 0 zone resets clat (msec): min=166, max=1257, avg=651.57, stdev=555.60 lat (msec): min=167, max=1258, avg=651.96, stdev=555.50 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7406, max= 8192, per=52.50%, avg=7799.00, stdev=555.79, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.05%, sys=18.24%, ctx=97, 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=184683: Tue Sep 8 12:15:27 2026 write: IOPS=1, BW=6178KiB/s (6326kB/s)(12.0MiB/1989msec); 0 zone resets clat (msec): min=159, max=1622, avg=658.07, stdev=835.67 lat (msec): min=159, max=1623, avg=658.38, stdev=835.74 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 192], 50.00th=[ 192], 60.00th=[ 192], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7515, max= 7515, per=50.59%, avg=7515.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=15.09%, ctx=74, 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=7427KiB/s (7605kB/s), 1857KiB/s-8063KiB/s (1901kB/s-8257kB/s), io=16.0MiB (16.8MB), run=1524-2206msec WRITE: bw=14.5MiB/s (15.2MB/s), 3714KiB/s-6257KiB/s (3803kB/s-6407kB/s), io=32.0MiB (33.6MB), run=1964-2206msec rand-rw: (groupid=0, jobs=1): err= 0: pid=184685: Tue Sep 8 12:15:27 2026 read: IOPS=2, BW=9630KiB/s (9861kB/s)(12.0MiB/1276msec) clat (msec): min=382, max=458, avg=421.53, stdev=37.93 lat (msec): min=382, max=458, avg=421.53, stdev=37.93 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 7876, max= 8192, per=89.40%, avg=8034.00, stdev=223.45, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=62.23%, ctx=3027, 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=184686: Tue Sep 8 12:15:27 2026 read: IOPS=0, BW=2247KiB/s (2301kB/s)(4096KiB/1823msec) clat (nsec): min=402077k, max=402077k, avg=402077087.00, stdev= 0.00 lat (nsec): min=402078k, max=402078k, avg=402078177.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7968, max= 7968, per=88.66%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4494KiB/s (4602kB/s)(8192KiB/1823msec); 0 zone resets clat (msec): min=548, max=845, avg=696.65, stdev=210.11 lat (msec): min=548, max=845, avg=696.93, stdev=210.13 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8192, max= 8192, per=50.65%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=16.08%, ctx=1071, 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=184687: Tue Sep 8 12:15:27 2026 write: IOPS=1, BW=6065KiB/s (6211kB/s)(12.0MiB/2026msec); 0 zone resets clat (msec): min=134, max=1365, avg=668.79, stdev=631.31 lat (msec): min=134, max=1365, avg=669.08, stdev=631.31 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8110, max= 8192, per=50.40%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.84%, ctx=49, 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=184688: Tue Sep 8 12:15:27 2026 write: IOPS=1, BW=7618KiB/s (7801kB/s)(12.0MiB/1613msec); 0 zone resets clat (msec): min=224, max=833, avg=533.24, stdev=304.56 lat (msec): min=224, max=833, avg=533.59, stdev=304.52 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 8192, max= 8192, per=50.65%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=19.98%, ctx=61, 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=8987KiB/s (9203kB/s), 2247KiB/s-9630KiB/s (2301kB/s-9861kB/s), io=16.0MiB (16.8MB), run=1276-1823msec WRITE: bw=15.8MiB/s (16.6MB/s), 4494KiB/s-7618KiB/s (4602kB/s-7801kB/s), io=32.0MiB (33.6MB), run=1613-2026msec