== sanity test 398b: DIO and buffer IO race ============== 11:51:35 (1788364295) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.7385 s, 18.4 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=183251: Wed Sep 2 11:52:41 2026 read: IOPS=26, BW=105KiB/s (108kB/s)(5992KiB/56981msec) clat (usec): min=32, max=658214, avg=20569.98, stdev=19606.63 lat (usec): min=32, max=658215, avg=20570.70, stdev=19606.66 clat percentiles (usec): | 1.00th=[ 113], 5.00th=[ 7963], 10.00th=[ 9634], 20.00th=[ 11731], | 30.00th=[ 13829], 40.00th=[ 16188], 50.00th=[ 18220], 60.00th=[ 20579], | 70.00th=[ 23462], 80.00th=[ 27395], 90.00th=[ 34341], 95.00th=[ 40633], | 99.00th=[ 54789], 99.50th=[ 61604], 99.90th=[ 83362], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 6, max= 183, per=25.06%, avg=104.76, stdev=32.10, samples=113 iops : min= 1, max= 45, avg=25.77, stdev= 8.07, samples=113 write: IOPS=27, BW=110KiB/s (113kB/s)(6296KiB/56981msec); 0 zone resets clat (usec): min=928, max=65155, avg=16486.44, stdev=12135.36 lat (usec): min=929, max=65157, avg=16487.39, stdev=12135.39 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2933], 10.00th=[ 3458], 20.00th=[ 4948], | 30.00th=[ 8160], 40.00th=[10945], 50.00th=[13829], 60.00th=[16909], | 70.00th=[20841], 80.00th=[26346], 90.00th=[34341], 95.00th=[41157], | 99.00th=[51643], 99.50th=[59507], 99.90th=[64750], 99.95th=[65274], | 99.99th=[65274] bw ( KiB/s): min= 40, max= 215, per=25.40%, avg=111.27, stdev=34.28, samples=112 iops : min= 10, max= 53, avg=27.40, stdev= 8.60, samples=112 lat (usec) : 50=0.07%, 100=0.26%, 250=0.94%, 500=0.07%, 1000=0.03% lat (msec) : 2=0.59%, 4=7.10%, 10=14.94%, 20=39.00%, 50=35.42% lat (msec) : 100=1.56%, 750=0.03% cpu : usr=0.12%, sys=25.72%, ctx=10312, 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=183252: Wed Sep 2 11:52:41 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(5940KiB/57325msec) clat (usec): min=35, max=90564, avg=20309.05, stdev=10944.79 lat (usec): min=35, max=90565, avg=20309.93, stdev=10944.80 clat percentiles (usec): | 1.00th=[ 113], 5.00th=[ 8291], 10.00th=[ 9503], 20.00th=[11600], | 30.00th=[13435], 40.00th=[15926], 50.00th=[18482], 60.00th=[20841], | 70.00th=[23987], 80.00th=[27919], 90.00th=[34341], 95.00th=[39584], | 99.00th=[54789], 99.50th=[57934], 99.90th=[87557], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 6, max= 183, per=24.74%, avg=103.39, stdev=31.44, samples=114 iops : min= 1, max= 45, avg=25.43, stdev= 7.91, samples=114 write: IOPS=27, BW=111KiB/s (113kB/s)(6348KiB/57325msec); 0 zone resets clat (usec): min=800, max=649360, avg=16969.79, stdev=20341.08 lat (usec): min=800, max=649361, avg=16971.54, stdev=20341.10 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 2868], 10.00th=[ 3458], 20.00th=[ 5014], | 30.00th=[ 7570], 40.00th=[ 10683], 50.00th=[ 13566], 60.00th=[ 16712], | 70.00th=[ 20841], 80.00th=[ 26608], 90.00th=[ 33817], 95.00th=[ 42730], | 99.00th=[ 55837], 99.50th=[ 58459], 99.90th=[107480], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 32, max= 262, per=25.47%, avg=111.54, stdev=37.19, samples=113 iops : min= 8, max= 65, avg=27.47, stdev= 9.32, samples=113 lat (usec) : 50=0.07%, 100=0.20%, 250=0.88%, 500=0.10%, 1000=0.16% lat (msec) : 2=0.78%, 4=6.61%, 10=16.34%, 20=37.11%, 50=35.84% lat (msec) : 100=1.86%, 250=0.03%, 750=0.03% cpu : usr=0.10%, sys=25.50%, ctx=10222, 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=183253: Wed Sep 2 11:52:41 2026 read: IOPS=26, BW=105KiB/s (108kB/s)(6028KiB/57360msec) clat (usec): min=38, max=92756, avg=20284.73, stdev=10960.99 lat (usec): min=38, max=92756, avg=20285.78, stdev=10960.81 clat percentiles (usec): | 1.00th=[ 123], 5.00th=[ 7832], 10.00th=[ 9241], 20.00th=[11863], | 30.00th=[13960], 40.00th=[16057], 50.00th=[18220], 60.00th=[20841], | 70.00th=[23725], 80.00th=[28181], 90.00th=[33817], 95.00th=[39584], | 99.00th=[54789], 99.50th=[64226], 99.90th=[90702], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 47, max= 175, per=25.32%, avg=105.83, stdev=29.21, samples=113 iops : min= 11, max= 43, avg=26.04, stdev= 7.33, samples=113 write: IOPS=27, BW=109KiB/s (112kB/s)(6260KiB/57360msec); 0 zone resets clat (usec): min=778, max=717019, avg=16980.66, stdev=21761.56 lat (usec): min=779, max=717021, avg=16981.63, stdev=21761.61 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 2737], 10.00th=[ 3294], 20.00th=[ 4686], | 30.00th=[ 7504], 40.00th=[ 10552], 50.00th=[ 13960], 60.00th=[ 17171], | 70.00th=[ 21103], 80.00th=[ 26346], 90.00th=[ 34341], 95.00th=[ 41157], | 99.00th=[ 53216], 99.50th=[ 62653], 99.90th=[ 93848], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 39, max= 200, per=25.08%, avg=109.86, stdev=35.32, samples=113 iops : min= 9, max= 50, avg=27.04, stdev= 8.86, samples=113 lat (usec) : 50=0.07%, 100=0.26%, 250=0.81%, 500=0.03%, 1000=0.10% lat (msec) : 2=0.81%, 4=7.13%, 10=16.67%, 20=37.14%, 50=35.16% lat (msec) : 100=1.79%, 750=0.03% cpu : usr=0.11%, sys=25.27%, ctx=10142, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183254: Wed Sep 2 11:52:41 2026 read: IOPS=26, BW=106KiB/s (109kB/s)(6052KiB/57064msec) clat (usec): min=28, max=700585, avg=20894.49, stdev=20670.34 lat (usec): min=29, max=700586, avg=20895.37, stdev=20670.38 clat percentiles (usec): | 1.00th=[ 115], 5.00th=[ 8225], 10.00th=[ 9634], 20.00th=[ 11863], | 30.00th=[ 13960], 40.00th=[ 15926], 50.00th=[ 17957], 60.00th=[ 20579], | 70.00th=[ 23987], 80.00th=[ 27919], 90.00th=[ 34341], 95.00th=[ 41157], | 99.00th=[ 57934], 99.50th=[ 71828], 99.90th=[101188], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 6, max= 176, per=25.21%, avg=105.39, stdev=30.73, samples=113 iops : min= 1, max= 44, avg=25.93, stdev= 7.74, samples=113 write: IOPS=27, BW=109KiB/s (112kB/s)(6236KiB/57064msec); 0 zone resets clat (usec): min=812, max=77654, avg=16189.65, stdev=12087.92 lat (usec): min=812, max=77655, avg=16190.62, stdev=12088.03 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 2868], 10.00th=[ 3392], 20.00th=[ 4883], | 30.00th=[ 7898], 40.00th=[10945], 50.00th=[13829], 60.00th=[17171], | 70.00th=[20841], 80.00th=[24773], 90.00th=[32375], 95.00th=[40109], | 99.00th=[55837], 99.50th=[60031], 99.90th=[76022], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 26, max= 240, per=24.84%, avg=108.81, stdev=36.92, samples=113 iops : min= 6, max= 60, avg=26.79, stdev= 9.28, samples=113 lat (usec) : 50=0.03%, 100=0.20%, 250=0.88%, 500=0.03%, 1000=0.13% lat (msec) : 2=0.78%, 4=6.84%, 10=15.89%, 20=38.18%, 50=35.25% lat (msec) : 100=1.73%, 250=0.03%, 750=0.03% cpu : usr=0.13%, sys=25.75%, ctx=10274, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=419KiB/s (429kB/s), 104KiB/s-106KiB/s (106kB/s-109kB/s), io=23.4MiB (24.6MB), run=56981-57360msec WRITE: bw=438KiB/s (449kB/s), 109KiB/s-111KiB/s (112kB/s-113kB/s), io=24.6MiB (25.7MB), run=56981-57360msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183256: Wed Sep 2 11:52:50 2026 read: IOPS=22, BW=90.4KiB/s (92.6kB/s)(5992KiB/66268msec) clat (msec): min=3, max=661, avg=18.99, stdev=21.81 lat (msec): min=3, max=661, avg=18.99, stdev=21.81 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 40], 95.00th=[ 48], | 99.00th=[ 70], 99.50th=[ 77], 99.90th=[ 101], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 24, max= 287, per=25.18%, avg=90.64, stdev=55.61, samples=130 iops : min= 6, max= 71, avg=22.28, stdev=13.99, samples=130 write: IOPS=23, BW=95.0KiB/s (97.3kB/s)(6296KiB/66268msec); 0 zone resets clat (msec): min=5, max=134, avg=23.92, stdev=15.60 lat (msec): min=5, max=134, avg=23.93, stdev=15.60 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 45], 95.00th=[ 54], | 99.00th=[ 75], 99.50th=[ 85], 99.90th=[ 129], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 23, max= 288, per=25.17%, avg=94.88, stdev=53.79, samples=130 iops : min= 5, max= 72, avg=23.35, stdev=13.53, samples=130 lat (msec) : 4=0.13%, 10=23.50%, 20=36.75%, 50=34.02%, 100=5.40% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.11%, sys=14.27%, ctx=6770, 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=183257: Wed Sep 2 11:52:50 2026 read: IOPS=22, BW=89.4KiB/s (91.5kB/s)(5940KiB/66450msec) clat (msec): min=3, max=701, avg=19.32, stdev=22.89 lat (msec): min=3, max=701, avg=19.32, stdev=22.89 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 39], 95.00th=[ 50], | 99.00th=[ 70], 99.50th=[ 78], 99.90th=[ 118], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 16, max= 288, per=24.93%, avg=89.76, stdev=57.29, samples=131 iops : min= 4, max= 72, avg=22.07, stdev=14.41, samples=131 write: IOPS=23, BW=95.5KiB/s (97.8kB/s)(6348KiB/66450msec); 0 zone resets clat (msec): min=5, max=133, avg=23.69, stdev=15.73 lat (msec): min=5, max=133, avg=23.69, stdev=15.73 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 54], | 99.00th=[ 74], 99.50th=[ 89], 99.90th=[ 109], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 24, max= 288, per=25.40%, avg=95.75, stdev=56.17, samples=131 iops : min= 6, max= 72, avg=23.56, stdev=14.12, samples=131 lat (msec) : 4=0.26%, 10=24.64%, 20=34.57%, 50=34.51%, 100=5.83% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.12%, sys=14.02%, ctx=6707, 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=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=183258: Wed Sep 2 11:52:50 2026 read: IOPS=22, BW=91.1KiB/s (93.3kB/s)(6028KiB/66170msec) clat (msec): min=3, max=108, avg=18.86, stdev=14.50 lat (msec): min=3, max=108, avg=18.86, stdev=14.50 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 39], 95.00th=[ 50], | 99.00th=[ 69], 99.50th=[ 78], 99.90th=[ 102], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 32, max= 296, per=25.37%, avg=91.32, stdev=57.35, samples=130 iops : min= 8, max= 74, avg=22.45, stdev=14.42, samples=130 write: IOPS=23, BW=94.6KiB/s (96.9kB/s)(6260KiB/66170msec); 0 zone resets clat (msec): min=5, max=707, avg=24.01, stdev=22.96 lat (msec): min=5, max=707, avg=24.02, stdev=22.96 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 53], | 99.00th=[ 73], 99.50th=[ 82], 99.90th=[ 130], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 24, max= 280, per=25.08%, avg=94.57, stdev=55.21, samples=130 iops : min= 6, max= 70, avg=23.27, stdev=13.89, samples=130 lat (msec) : 4=0.23%, 10=24.93%, 20=34.64%, 50=34.83%, 100=5.18% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.11%, sys=14.11%, ctx=6710, 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=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=183259: Wed Sep 2 11:52:50 2026 read: IOPS=22, BW=90.0KiB/s (93.2kB/s)(6052KiB/66516msec) clat (usec): min=2815, max=89291, avg=18795.25, stdev=14317.95 lat (usec): min=2816, max=89291, avg=18796.38, stdev=14317.83 clat percentiles (usec): | 1.00th=[ 3884], 5.00th=[ 5276], 10.00th=[ 6194], 20.00th=[ 7635], | 30.00th=[ 8979], 40.00th=[11207], 50.00th=[14484], 60.00th=[17171], | 70.00th=[21103], 80.00th=[28705], 90.00th=[39584], 95.00th=[49021], | 99.00th=[66323], 99.50th=[72877], 99.90th=[79168], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 7, max= 304, per=25.19%, avg=90.68, stdev=56.67, samples=131 iops : min= 1, max= 76, avg=22.30, stdev=14.26, samples=131 write: IOPS=23, BW=93.8KiB/s (96.0kB/s)(6236KiB/66516msec); 0 zone resets clat (msec): min=4, max=706, avg=24.32, stdev=23.53 lat (msec): min=4, max=706, avg=24.32, stdev=23.53 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 47], 95.00th=[ 55], | 99.00th=[ 72], 99.50th=[ 89], 99.90th=[ 136], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 32, max= 296, per=24.86%, avg=93.73, stdev=57.50, samples=131 iops : min= 8, max= 74, avg=23.06, stdev=14.45, samples=131 lat (msec) : 4=0.62%, 10=25.49%, 20=33.43%, 50=34.28%, 100=6.05% lat (msec) : 250=0.10%, 750=0.03% cpu : usr=0.10%, sys=14.02%, ctx=6717, 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=361KiB/s (370kB/s), 89.4KiB/s-91.1KiB/s (91.5kB/s-93.3kB/s), io=23.4MiB (24.6MB), run=66170-66516msec WRITE: bw=378KiB/s (387kB/s), 93.8KiB/s-95.5KiB/s (96.0kB/s-97.8kB/s), io=24.6MiB (25.7MB), run=66170-66516msec 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=183282: Wed Sep 2 11:53:11 2026 read: IOPS=25, BW=411KiB/s (421kB/s)(5920KiB/14408msec) clat (usec): min=49, max=66561, avg=20336.61, stdev=10151.39 lat (usec): min=49, max=66561, avg=20337.37, stdev=10151.40 clat percentiles (usec): | 1.00th=[ 96], 5.00th=[ 3851], 10.00th=[10290], 20.00th=[12649], | 30.00th=[14615], 40.00th=[16450], 50.00th=[19006], 60.00th=[21365], | 70.00th=[24773], 80.00th=[27395], 90.00th=[33162], 95.00th=[38536], | 99.00th=[49546], 99.50th=[58459], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 223, max= 631, per=24.60%, avg=407.43, stdev=94.19, samples=28 iops : min= 13, max= 39, avg=24.96, stdev= 6.08, samples=28 write: IOPS=27, BW=442KiB/s (453kB/s)(6368KiB/14408msec); 0 zone resets clat (usec): min=1403, max=68257, avg=17174.79, stdev=12321.20 lat (usec): min=1404, max=68259, avg=17176.71, stdev=12321.22 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 4228], 10.00th=[ 5014], 20.00th=[ 6587], | 30.00th=[ 9110], 40.00th=[11469], 50.00th=[14222], 60.00th=[16909], | 70.00th=[21365], 80.00th=[25822], 90.00th=[33817], 95.00th=[39584], | 99.00th=[63177], 99.50th=[68682], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 126, max= 608, per=25.38%, avg=442.39, stdev=106.86, samples=28 iops : min= 7, max= 38, avg=27.14, stdev= 6.73, samples=28 lat (usec) : 50=0.13%, 100=0.39%, 250=1.69%, 500=0.13% lat (msec) : 2=0.91%, 4=1.04%, 10=17.97%, 20=38.41%, 50=37.50% lat (msec) : 100=1.82% cpu : usr=0.08%, sys=27.73%, ctx=3182, 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=183283: Wed Sep 2 11:53:11 2026 read: IOPS=25, BW=406KiB/s (416kB/s)(5744KiB/14132msec) clat (usec): min=103, max=83249, avg=20873.22, stdev=11023.22 lat (usec): min=104, max=83249, avg=20873.98, stdev=11023.30 clat percentiles (usec): | 1.00th=[ 115], 5.00th=[ 9241], 10.00th=[10814], 20.00th=[12649], | 30.00th=[14746], 40.00th=[16450], 50.00th=[18744], 60.00th=[20841], | 70.00th=[23462], 80.00th=[27395], 90.00th=[34866], 95.00th=[43254], | 99.00th=[58459], 99.50th=[64750], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 254, max= 704, per=24.58%, avg=407.00, stdev=102.54, samples=27 iops : min= 15, max= 44, avg=24.89, stdev= 6.43, samples=27 write: IOPS=28, BW=463KiB/s (474kB/s)(6544KiB/14132msec); 0 zone resets clat (usec): min=2048, max=67730, avg=16113.07, stdev=11027.80 lat (usec): min=2049, max=67730, avg=16115.79, stdev=11027.13 clat percentiles (usec): | 1.00th=[ 3621], 5.00th=[ 4359], 10.00th=[ 4883], 20.00th=[ 5866], | 30.00th=[ 8291], 40.00th=[11207], 50.00th=[13435], 60.00th=[16712], | 70.00th=[20055], 80.00th=[24511], 90.00th=[31327], 95.00th=[37487], | 99.00th=[49546], 99.50th=[53740], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 255, max= 708, per=26.18%, avg=456.26, stdev=110.33, samples=27 iops : min= 15, max= 44, avg=28.00, stdev= 6.93, samples=27 lat (usec) : 250=1.04% lat (msec) : 4=1.56%, 10=20.18%, 20=40.23%, 50=35.42%, 100=1.56% cpu : usr=0.11%, sys=28.73%, ctx=2997, 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=183284: Wed Sep 2 11:53:11 2026 read: IOPS=27, BW=433KiB/s (443kB/s)(6256KiB/14457msec) clat (usec): min=79, max=61407, avg=20161.31, stdev=11017.06 lat (usec): min=79, max=61408, avg=20162.09, stdev=11017.09 clat percentiles (usec): | 1.00th=[ 97], 5.00th=[ 141], 10.00th=[ 9503], 20.00th=[12387], | 30.00th=[14222], 40.00th=[16188], 50.00th=[18220], 60.00th=[20579], | 70.00th=[23462], 80.00th=[27919], 90.00th=[33817], 95.00th=[41157], | 99.00th=[55837], 99.50th=[58459], 99.90th=[61604], 99.95th=[61604], | 99.99th=[61604] bw ( KiB/s): min= 191, max= 574, per=26.31%, avg=435.75, stdev=93.88, samples=28 iops : min= 11, max= 35, avg=26.71, stdev= 5.89, samples=28 write: IOPS=26, BW=417KiB/s (427kB/s)(6032KiB/14457msec); 0 zone resets clat (usec): min=1541, max=90660, avg=17257.04, stdev=11902.86 lat (usec): min=1542, max=90660, avg=17275.72, stdev=11899.84 clat percentiles (usec): | 1.00th=[ 2606], 5.00th=[ 4621], 10.00th=[ 5145], 20.00th=[ 6718], | 30.00th=[ 9503], 40.00th=[11731], 50.00th=[14877], 60.00th=[17171], | 70.00th=[20579], 80.00th=[25822], 90.00th=[34341], 95.00th=[39584], | 99.00th=[52691], 99.50th=[57934], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 191, max= 577, per=23.74%, avg=413.82, stdev=111.90, samples=28 iops : min= 11, max= 36, avg=25.36, stdev= 7.19, samples=28 lat (usec) : 100=0.78%, 250=2.21%, 500=0.13% lat (msec) : 2=0.39%, 4=0.65%, 10=16.93%, 20=42.06%, 50=34.90% lat (msec) : 100=1.95% cpu : usr=0.08%, sys=27.91%, ctx=2943, 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=183285: Wed Sep 2 11:53:11 2026 read: IOPS=27, BW=433KiB/s (444kB/s)(6032KiB/13918msec) clat (usec): min=72, max=90879, avg=19835.57, stdev=11087.25 lat (usec): min=72, max=90880, avg=19836.25, stdev=11087.35 clat percentiles (usec): | 1.00th=[ 82], 5.00th=[ 124], 10.00th=[ 9110], 20.00th=[11863], | 30.00th=[14484], 40.00th=[16319], 50.00th=[18744], 60.00th=[21103], | 70.00th=[23462], 80.00th=[27657], 90.00th=[33162], 95.00th=[38011], | 99.00th=[55837], 99.50th=[60556], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 319, max= 568, per=25.79%, avg=427.11, stdev=74.81, samples=27 iops : min= 19, max= 35, avg=26.15, stdev= 4.77, samples=27 write: IOPS=28, BW=449KiB/s (460kB/s)(6256KiB/13918msec); 0 zone resets clat (usec): min=2086, max=77433, avg=16394.66, stdev=11531.66 lat (usec): min=2087, max=77434, avg=16396.09, stdev=11531.68 clat percentiles (usec): | 1.00th=[ 2671], 5.00th=[ 4555], 10.00th=[ 5080], 20.00th=[ 6259], | 30.00th=[ 8979], 40.00th=[10945], 50.00th=[12911], 60.00th=[15270], | 70.00th=[19792], 80.00th=[26346], 90.00th=[31851], 95.00th=[38011], | 99.00th=[50070], 99.50th=[66847], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 256, max= 672, per=25.55%, avg=445.30, stdev=111.18, samples=27 iops : min= 16, max= 42, avg=27.30, stdev= 7.09, samples=27 lat (usec) : 100=1.17%, 250=2.60% lat (msec) : 4=1.82%, 10=17.71%, 20=40.36%, 50=35.16%, 100=1.17% cpu : usr=0.11%, sys=28.39%, ctx=2914, 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=1657KiB/s (1697kB/s), 406KiB/s-433KiB/s (416kB/s-444kB/s), io=23.4MiB (24.5MB), run=13918-14457msec WRITE: bw=1743KiB/s (1785kB/s), 417KiB/s-463KiB/s (427kB/s-474kB/s), io=24.6MiB (25.8MB), run=13918-14457msec fio: pid=183288, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=183287: Wed Sep 2 11:53:13 2026 read: IOPS=22, BW=356KiB/s (365kB/s)(5920KiB/16631msec) clat (usec): min=3109, max=96407, avg=18828.49, stdev=14985.38 lat (usec): min=3111, max=96408, avg=18829.32, stdev=14985.36 clat percentiles (usec): | 1.00th=[ 4047], 5.00th=[ 5145], 10.00th=[ 5735], 20.00th=[ 8094], | 30.00th=[10159], 40.00th=[11469], 50.00th=[13566], 60.00th=[15926], | 70.00th=[20317], 80.00th=[27395], 90.00th=[39584], 95.00th=[49021], | 99.00th=[77071], 99.50th=[89654], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 96, max= 928, per=25.27%, avg=341.34, stdev=202.02, samples=32 iops : min= 6, max= 58, avg=21.00, stdev=12.79, samples=32 write: IOPS=23, BW=383KiB/s (392kB/s)(6368KiB/16631msec); 0 zone resets clat (msec): min=5, max=107, avg=24.01, stdev=16.42 lat (msec): min=5, max=107, avg=24.01, stdev=16.42 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 39], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 79], 99.50th=[ 91], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 128, max= 928, per=26.32%, avg=369.56, stdev=189.75, samples=32 iops : min= 8, max= 58, avg=22.78, stdev=11.97, samples=32 lat (msec) : 4=0.39%, 10=23.31%, 20=38.28%, 50=32.03%, 100=5.86% lat (msec) : 250=0.13% cpu : usr=0.11%, sys=13.57%, ctx=1825, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=183288: Wed Sep 2 11:53:13 2026 read: IOPS=18, BW=291KiB/s (297kB/s)(4272KiB/14705msec) clat (usec): min=4021, max=78344, avg=22366.56, stdev=14910.12 lat (usec): min=4022, max=78344, avg=22367.32, stdev=14910.13 clat percentiles (usec): | 1.00th=[ 4686], 5.00th=[ 7832], 10.00th=[ 8979], 20.00th=[11076], | 30.00th=[12387], 40.00th=[13829], 50.00th=[16581], 60.00th=[20055], | 70.00th=[25297], 80.00th=[34341], 90.00th=[47449], 95.00th=[52691], | 99.00th=[70779], 99.50th=[73925], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 128, max= 768, per=21.67%, avg=292.79, stdev=132.62, samples=29 iops : min= 8, max= 48, avg=17.93, stdev= 8.39, samples=29 write: IOPS=19, BW=320KiB/s (328kB/s)(4704KiB/14705msec); 0 zone resets clat (msec): min=5, max=106, avg=29.32, stdev=15.89 lat (msec): min=5, max=106, avg=29.32, stdev=15.89 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 35], 80.00th=[ 40], 90.00th=[ 51], 95.00th=[ 58], | 99.00th=[ 87], 99.50th=[ 87], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 191, max= 576, per=22.39%, avg=314.38, stdev=81.30, samples=29 iops : min= 11, max= 36, avg=19.31, stdev= 5.26, samples=29 lat (msec) : 10=9.43%, 20=36.48%, 50=45.20%, 100=8.54%, 250=0.18% cpu : usr=0.09%, sys=13.00%, ctx=1220, 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=268,294,0,0 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=183289: Wed Sep 2 11:53:13 2026 read: IOPS=23, BW=377KiB/s (386kB/s)(6256KiB/16612msec) clat (msec): min=3, max=100, avg=19.42, stdev=16.23 lat (msec): min=3, max=100, avg=19.42, stdev=16.23 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 29], 90.00th=[ 42], 95.00th=[ 52], | 99.00th=[ 91], 99.50th=[ 100], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 159, max= 1152, per=27.48%, avg=371.25, stdev=228.09, samples=32 iops : min= 9, max= 72, avg=22.88, stdev=14.40, samples=32 write: IOPS=22, BW=363KiB/s (372kB/s)(6032KiB/16612msec); 0 zone resets clat (usec): min=5558, max=79538, avg=23631.82, stdev=15009.57 lat (usec): min=5559, max=79540, avg=23634.32, stdev=15010.15 clat percentiles (usec): | 1.00th=[ 5997], 5.00th=[ 7308], 10.00th=[ 8225], 20.00th=[10945], | 30.00th=[13173], 40.00th=[15401], 50.00th=[19530], 60.00th=[23200], | 70.00th=[28705], 80.00th=[34866], 90.00th=[45351], 95.00th=[55313], | 99.00th=[70779], 99.50th=[74974], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 127, max= 1120, per=24.74%, avg=347.41, stdev=201.75, samples=32 iops : min= 7, max= 70, avg=21.41, stdev=12.67, samples=32 lat (msec) : 4=0.13%, 10=22.01%, 20=38.67%, 50=32.55%, 100=6.51% lat (msec) : 250=0.13% cpu : usr=0.11%, sys=13.58%, ctx=1813, 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=183290: Wed Sep 2 11:53:13 2026 read: IOPS=22, BW=364KiB/s (372kB/s)(6032KiB/16589msec) clat (msec): min=4, max=102, avg=19.76, stdev=15.29 lat (msec): min=4, max=102, avg=19.76, stdev=15.29 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 30], 90.00th=[ 42], 95.00th=[ 51], | 99.00th=[ 78], 99.50th=[ 99], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 184, max= 1056, per=25.77%, avg=348.22, stdev=197.21, samples=32 iops : min= 11, max= 66, avg=21.44, stdev=12.46, samples=32 write: IOPS=23, BW=377KiB/s (386kB/s)(6256KiB/16589msec); 0 zone resets clat (usec): min=5853, max=91200, avg=23083.55, stdev=14786.59 lat (usec): min=5855, max=91202, avg=23085.19, stdev=14786.69 clat percentiles (usec): | 1.00th=[ 6194], 5.00th=[ 7111], 10.00th=[ 8094], 20.00th=[ 9765], | 30.00th=[12387], 40.00th=[15401], 50.00th=[18220], 60.00th=[23462], | 70.00th=[28967], 80.00th=[35914], 90.00th=[44303], 95.00th=[51643], | 99.00th=[66323], 99.50th=[77071], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 127, max= 992, per=26.12%, avg=366.75, stdev=207.76, samples=32 iops : min= 7, max= 62, avg=22.59, stdev=13.12, samples=32 lat (msec) : 10=25.39%, 20=34.90%, 50=34.11%, 100=5.47%, 250=0.13% cpu : usr=0.13%, sys=13.67%, ctx=1850, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1352KiB/s (1384kB/s), 291KiB/s-377KiB/s (297kB/s-386kB/s), io=21.0MiB (23.0MB), run=14705-16631msec WRITE: bw=1405KiB/s (1438kB/s), 320KiB/s-383KiB/s (328kB/s-392kB/s), io=22.8MiB (23.9MB), run=14705-16631msec 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=183302: Wed Sep 2 11:53:21 2026 read: IOPS=2, BW=2714KiB/s (2779kB/s)(7168KiB/2641msec) clat (usec): min=452, max=471883, avg=170152.10, stdev=146393.09 lat (usec): min=453, max=471884, avg=170153.28, stdev=146392.95 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[121111], | 30.00th=[122160], 40.00th=[122160], 50.00th=[123208], 60.00th=[147850], | 70.00th=[147850], 80.00th=[204473], 90.00th=[471860], 95.00th=[471860], | 99.00th=[471860], 99.50th=[471860], 99.90th=[471860], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 1921, max= 5189, per=44.41%, avg=3052.67, stdev=1851.21, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1939KiB/s (1985kB/s)(5120KiB/2641msec); 0 zone resets clat (msec): min=169, max=457, avg=278.44, stdev=119.60 lat (msec): min=169, max=457, avg=278.54, stdev=119.61 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 330], 80.00th=[ 330], 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= 2048, max= 4015, per=31.50%, avg=3031.50, stdev=1390.88, samples=2 iops : min= 2, max= 3, avg= 2.50, stdev= 0.71, samples=2 lat (usec) : 500=8.33% lat (msec) : 250=58.33%, 500=33.33% cpu : usr=0.00%, sys=47.42%, ctx=1047, 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=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=183303: Wed Sep 2 11:53:21 2026 read: IOPS=0, BW=687KiB/s (704kB/s)(2048KiB/2979msec) clat (usec): min=525, max=142925, avg=71725.46, stdev=100692.25 lat (usec): min=526, max=142927, avg=71726.84, stdev=100692.88 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 529], 60.00th=[143655], | 70.00th=[143655], 80.00th=[143655], 90.00th=[143655], 95.00th=[143655], | 99.00th=[143655], 99.50th=[143655], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 1698, max= 2007, per=26.95%, avg=1852.50, stdev=218.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3437KiB/s (3520kB/s)(10.0MiB/2979msec); 0 zone resets clat (msec): min=194, max=577, avg=281.29, stdev=117.24 lat (msec): min=194, max=578, avg=281.35, stdev=117.25 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 201], | 30.00th=[ 215], 40.00th=[ 222], 50.00th=[ 230], 60.00th=[ 255], | 70.00th=[ 264], 80.00th=[ 279], 90.00th=[ 380], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1698, max= 4096, per=32.77%, avg=3153.80, stdev=1230.05, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.34, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.07%, sys=48.86%, ctx=358, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183304: Wed Sep 2 11:53:21 2026 read: IOPS=2, BW=2344KiB/s (2400kB/s)(6144KiB/2621msec) clat (usec): min=382, max=329070, avg=114715.48, stdev=146109.07 lat (usec): min=382, max=329071, avg=114716.37, stdev=146109.11 clat percentiles (usec): | 1.00th=[ 383], 5.00th=[ 383], 10.00th=[ 383], 20.00th=[ 445], | 30.00th=[ 445], 40.00th=[ 545], 50.00th=[ 545], 60.00th=[ 96994], | 70.00th=[261096], 80.00th=[261096], 90.00th=[329253], 95.00th=[329253], | 99.00th=[329253], 99.50th=[329253], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 1921, max= 6023, per=57.78%, avg=3972.00, stdev=2900.55, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2344KiB/s (2400kB/s)(6144KiB/2621msec); 0 zone resets clat (msec): min=165, max=457, avg=308.17, stdev=107.17 lat (msec): min=165, max=457, avg=308.23, stdev=107.15 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 342], | 70.00th=[ 363], 80.00th=[ 363], 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= 1729, max= 2048, per=20.02%, avg=1926.25, stdev=141.75, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 100=8.33%, 250=16.67%, 500=50.00% cpu : usr=0.00%, sys=37.14%, ctx=420, 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=183305: Wed Sep 2 11:53:21 2026 read: IOPS=1, BW=1988KiB/s (2035kB/s)(5120KiB/2576msec) clat (usec): min=553, max=314088, avg=136309.28, stdev=163371.60 lat (usec): min=555, max=314090, avg=136310.58, stdev=163371.72 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 553], | 30.00th=[ 562], 40.00th=[ 562], 50.00th=[ 53216], 60.00th=[ 53216], | 70.00th=[312476], 80.00th=[312476], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 1921, max= 6023, per=57.78%, avg=3972.00, stdev=2900.55, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2783KiB/s (2849kB/s)(7168KiB/2576msec); 0 zone resets clat (msec): min=149, max=375, avg=257.51, stdev=74.42 lat (msec): min=149, max=375, avg=257.57, stdev=74.41 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 207], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 247], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 321], 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= 1721, max= 4096, per=26.80%, avg=2579.33, stdev=1317.27, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=33.33%, 500=41.67% cpu : usr=0.00%, sys=47.11%, ctx=212, 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=6875KiB/s (7040kB/s), 687KiB/s-2714KiB/s (704kB/s-2779kB/s), io=20.0MiB (20.0MB), run=2576-2979msec WRITE: bw=9625KiB/s (9856kB/s), 1939KiB/s-3437KiB/s (1985kB/s-3520kB/s), io=28.0MiB (29.4MB), run=2576-2979msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183297: Wed Sep 2 11:53:22 2026 read: IOPS=2, BW=2979KiB/s (3051kB/s)(7168KiB/2406msec) clat (msec): min=56, max=568, avg=155.05, stdev=185.23 lat (msec): min=56, max=568, avg=155.05, stdev=185.23 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 60], | 30.00th=[ 69], 40.00th=[ 69], 50.00th=[ 74], 60.00th=[ 112], | 70.00th=[ 112], 80.00th=[ 148], 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= 1988, max= 5069, per=42.65%, avg=2787.00, stdev=1521.58, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=2, BW=2128KiB/s (2179kB/s)(5120KiB/2406msec); 0 zone resets clat (msec): min=137, max=394, avg=251.93, stdev=109.52 lat (msec): min=137, max=394, avg=252.02, stdev=109.51 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2048, max= 6131, per=44.70%, avg=4089.50, stdev=2887.12, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (msec) : 100=33.33%, 250=41.67%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=18.59%, ctx=314, 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=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=183298: Wed Sep 2 11:53:22 2026 read: IOPS=0, BW=653KiB/s (669kB/s)(2048KiB/3134msec) clat (msec): min=95, max=176, avg=136.40, stdev=57.13 lat (msec): min=96, max=176, avg=136.40, stdev=57.13 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 96], 40.00th=[ 96], 50.00th=[ 96], 60.00th=[ 178], | 70.00th=[ 178], 80.00th=[ 178], 90.00th=[ 178], 95.00th=[ 178], | 99.00th=[ 178], 99.50th=[ 178], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 1695, max= 2000, per=28.28%, avg=1847.50, stdev=215.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3267KiB/s (3346kB/s)(10.0MiB/3134msec); 0 zone resets clat (msec): min=48, max=716, avg=278.26, stdev=226.59 lat (msec): min=48, max=716, avg=278.33, stdev=226.60 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 58], | 30.00th=[ 77], 40.00th=[ 186], 50.00th=[ 222], 60.00th=[ 249], | 70.00th=[ 262], 80.00th=[ 359], 90.00th=[ 609], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1988, max= 6000, per=33.01%, avg=3019.75, stdev=1987.02, samples=4 iops : min= 1, max= 5, avg= 2.25, stdev= 1.89, samples=4 lat (msec) : 50=8.33%, 100=25.00%, 250=33.33%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=25.34%, ctx=149, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183299: Wed Sep 2 11:53:22 2026 read: IOPS=1, BW=2007KiB/s (2055kB/s)(6144KiB/3062msec) clat (msec): min=53, max=566, avg=225.69, stdev=217.63 lat (msec): min=53, max=566, avg=225.69, stdev=217.63 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 58], | 30.00th=[ 58], 40.00th=[ 68], 50.00th=[ 68], 60.00th=[ 192], | 70.00th=[ 418], 80.00th=[ 418], 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= 1988, max= 4000, per=40.97%, avg=2677.00, stdev=1146.08, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=2007KiB/s (2055kB/s)(6144KiB/3062msec); 0 zone resets clat (msec): min=94, max=443, avg=275.79, stdev=134.29 lat (msec): min=94, max=443, avg=275.85, stdev=134.29 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 305], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 2000, max= 3379, per=27.06%, avg=2475.67, stdev=782.68, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=33.33%, 250=25.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=16.73%, ctx=152, 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=183300: Wed Sep 2 11:53:22 2026 read: IOPS=2, BW=2166KiB/s (2218kB/s)(5120KiB/2364msec) clat (msec): min=82, max=618, avg=239.36, stdev=216.32 lat (msec): min=82, max=618, avg=239.36, stdev=216.32 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 83], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 153], 60.00th=[ 153], | 70.00th=[ 207], 80.00th=[ 207], 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= 2043, max= 5965, per=61.28%, avg=4004.00, stdev=2773.27, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=3032KiB/s (3105kB/s)(7168KiB/2364msec); 0 zone resets clat (msec): min=36, max=345, avg=164.91, stdev=128.44 lat (msec): min=36, max=346, avg=164.98, stdev=128.46 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 56], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 123], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 338], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 2043, max= 5086, per=33.44%, avg=3059.00, stdev=1755.44, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 250=41.67%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=17.39%, ctx=95, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6535KiB/s (6692kB/s), 653KiB/s-2979KiB/s (669kB/s-3051kB/s), io=20.0MiB (20.0MB), run=2364-3134msec WRITE: bw=9149KiB/s (9368kB/s), 2007KiB/s-3267KiB/s (2055kB/s-3346kB/s), io=28.0MiB (29.4MB), run=2364-3134msec 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=183316: Wed Sep 2 11:53:30 2026 read: IOPS=2, BW=10.2MiB/s (10.7MB/s)(12.0MiB/1179msec) clat (msec): min=367, max=404, avg=392.43, stdev=21.48 lat (msec): min=367, max=404, avg=392.43, stdev=21.48 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 6113, max= 8192, per=72.82%, avg=7152.50, stdev=1470.07, 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=58.49%, ctx=2806, 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=183317: Wed Sep 2 11:53:30 2026 read: IOPS=0, BW=2456KiB/s (2515kB/s)(4096KiB/1668msec) clat (nsec): min=395726k, max=395726k, avg=395725731.00, stdev= 0.00 lat (nsec): min=395729k, max=395729k, avg=395728501.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 5760, max= 5760, per=58.64%, avg=5760.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4911KiB/s (5029kB/s)(8192KiB/1668msec); 0 zone resets clat (msec): min=519, max=729, avg=624.35, stdev=148.71 lat (msec): min=528, max=729, avg=629.31, stdev=141.89 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 8192, max= 8192, per=46.68%, 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=66.67% cpu : usr=0.00%, sys=22.92%, ctx=1078, 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=183318: Wed Sep 2 11:53:30 2026 write: IOPS=1, BW=6582KiB/s (6740kB/s)(12.0MiB/1867msec); 0 zone resets clat (msec): min=119, max=1119, avg=615.73, stdev=500.39 lat (msec): min=119, max=1120, avg=616.09, stdev=500.42 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 120], | 30.00th=[ 120], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 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= 8192, max= 8192, per=46.68%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.05%, sys=12.06%, ctx=50, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183319: Wed Sep 2 11:53:30 2026 write: IOPS=1, BW=7493KiB/s (7673kB/s)(12.0MiB/1640msec); 0 zone resets clat (msec): min=248, max=888, avg=545.87, stdev=321.97 lat (msec): min=249, max=888, avg=546.27, stdev=321.93 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 5927, max= 5927, per=33.77%, avg=5927.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.12%, sys=22.00%, ctx=50, 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=9823KiB/s (10.1MB/s), 2456KiB/s-10.2MiB/s (2515kB/s-10.7MB/s), io=16.0MiB (16.8MB), run=1179-1668msec WRITE: bw=17.1MiB/s (17.0MB/s), 4911KiB/s-7493KiB/s (5029kB/s-7673kB/s), io=32.0MiB (33.6MB), run=1640-1867msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183311: Wed Sep 2 11:53:30 2026 read: IOPS=2, BW=8280KiB/s (8479kB/s)(12.0MiB/1484msec) clat (msec): min=132, max=676, avg=481.24, stdev=302.77 lat (msec): min=132, max=676, avg=481.24, stdev=302.77 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7861, max= 7984, per=99.48%, avg=7922.50, stdev=86.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=66.67% cpu : usr=0.00%, sys=17.94%, ctx=104, 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=183312: Wed Sep 2 11:53:30 2026 read: IOPS=0, BW=1991KiB/s (2039kB/s)(4096KiB/2057msec) clat (nsec): min=832758k, max=832758k, avg=832758361.00, stdev= 0.00 lat (nsec): min=832759k, max=832759k, avg=832759106.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 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= 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 write: IOPS=0, BW=3982KiB/s (4078kB/s)(8192KiB/2057msec); 0 zone resets clat (msec): min=420, max=762, avg=591.40, stdev=241.77 lat (msec): min=420, max=762, avg=591.73, stdev=241.74 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8159, max= 8159, per=51.22%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=12.31%, 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=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=183313: Wed Sep 2 11:53:30 2026 write: IOPS=1, BW=6471KiB/s (6626kB/s)(12.0MiB/1899msec); 0 zone resets clat (msec): min=454, max=844, avg=619.90, stdev=201.83 lat (msec): min=454, max=845, avg=620.18, stdev=201.83 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 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= 7892, max= 8110, per=50.23%, avg=8001.00, stdev=154.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.11%, sys=17.07%, ctx=63, 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=183314: Wed Sep 2 11:53:30 2026 write: IOPS=1, BW=7656KiB/s (7840kB/s)(12.0MiB/1605msec); 0 zone resets clat (msec): min=125, max=1091, avg=519.37, stdev=506.90 lat (msec): min=126, max=1091, avg=519.73, stdev=506.81 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 127], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min=15574, max=15574, per=97.77%, avg=15574.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.06%, sys=17.52%, ctx=74, 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=7965KiB/s (8156kB/s), 1991KiB/s-8280KiB/s (2039kB/s-8479kB/s), io=16.0MiB (16.8MB), run=1484-2057msec WRITE: bw=15.6MiB/s (16.3MB/s), 3982KiB/s-7656KiB/s (4078kB/s-7840kB/s), io=32.0MiB (33.6MB), run=1605-2057msec