== sanity test 398b: DIO and buffer IO race ============== 07:09:58 (1778843398) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.70292 s, 18.6 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=183239: Fri May 15 07:11:00 2026 read: IOPS=28, BW=115KiB/s (118kB/s)(5992KiB/52063msec) clat (usec): min=27, max=595433, avg=18750.54, stdev=17924.90 lat (usec): min=27, max=595434, avg=18751.38, stdev=17924.94 clat percentiles (usec): | 1.00th=[ 98], 5.00th=[ 6783], 10.00th=[ 8160], 20.00th=[ 10028], | 30.00th=[ 12256], 40.00th=[ 14615], 50.00th=[ 16909], 60.00th=[ 19268], | 70.00th=[ 21890], 80.00th=[ 25297], 90.00th=[ 31065], 95.00th=[ 36439], | 99.00th=[ 52691], 99.50th=[ 58983], 99.90th=[ 66847], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 6, max= 208, per=25.46%, avg=114.83, stdev=36.68, samples=103 iops : min= 1, max= 52, avg=28.29, stdev= 9.32, samples=103 write: IOPS=30, BW=121KiB/s (124kB/s)(6296KiB/52063msec); 0 zone resets clat (usec): min=724, max=81166, avg=15107.79, stdev=11738.59 lat (usec): min=725, max=81166, avg=15112.55, stdev=11740.74 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 2311], 10.00th=[ 2868], 20.00th=[ 4080], | 30.00th=[ 6980], 40.00th=[10159], 50.00th=[12649], 60.00th=[15401], | 70.00th=[19006], 80.00th=[24249], 90.00th=[31327], 95.00th=[38011], | 99.00th=[53216], 99.50th=[57410], 99.90th=[67634], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 40, max= 208, per=25.81%, avg=121.81, stdev=33.39, samples=102 iops : min= 10, max= 52, avg=30.05, stdev= 8.47, samples=102 lat (usec) : 50=0.07%, 100=0.42%, 250=0.85%, 750=0.16%, 1000=0.36% lat (msec) : 2=1.30%, 4=8.17%, 10=18.49%, 20=38.48%, 50=30.37% lat (msec) : 100=1.30%, 750=0.03% cpu : usr=0.09%, sys=25.77%, ctx=9034, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183240: Fri May 15 07:11:00 2026 read: IOPS=28, BW=113KiB/s (116kB/s)(5940KiB/52356msec) clat (usec): min=27, max=71111, avg=18767.85, stdev=9963.86 lat (usec): min=27, max=71112, avg=18778.74, stdev=9979.30 clat percentiles (usec): | 1.00th=[ 98], 5.00th=[ 7046], 10.00th=[ 8455], 20.00th=[10552], | 30.00th=[12649], 40.00th=[14877], 50.00th=[17433], 60.00th=[19530], | 70.00th=[21890], 80.00th=[25822], 90.00th=[31589], 95.00th=[37487], | 99.00th=[50594], 99.50th=[58459], 99.90th=[65274], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 6, max= 184, per=25.13%, avg=113.32, stdev=34.30, samples=104 iops : min= 1, max= 46, avg=27.91, stdev= 8.69, samples=104 write: IOPS=30, BW=121KiB/s (124kB/s)(6348KiB/52356msec); 0 zone resets clat (usec): min=663, max=595465, avg=15298.20, stdev=18923.72 lat (usec): min=664, max=595466, avg=15298.96, stdev=18923.76 clat percentiles (usec): | 1.00th=[ 832], 5.00th=[ 2114], 10.00th=[ 2704], 20.00th=[ 3949], | 30.00th=[ 6128], 40.00th=[ 9503], 50.00th=[ 12125], 60.00th=[ 15270], | 70.00th=[ 18744], 80.00th=[ 23987], 90.00th=[ 32113], 95.00th=[ 38536], | 99.00th=[ 53216], 99.50th=[ 61604], 99.90th=[ 87557], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 31, max= 255, per=25.84%, avg=121.95, stdev=37.99, samples=103 iops : min= 7, max= 63, avg=30.08, stdev= 9.59, samples=103 lat (usec) : 50=0.10%, 100=0.46%, 250=0.52%, 500=0.03%, 750=0.23% lat (usec) : 1000=0.52% lat (msec) : 2=1.50%, 4=8.27%, 10=18.26%, 20=37.96%, 50=30.99% lat (msec) : 100=1.14%, 750=0.03% cpu : usr=0.09%, sys=25.61%, ctx=8913, majf=0, minf=19 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=183241: Fri May 15 07:11:00 2026 read: IOPS=28, BW=113KiB/s (116kB/s)(6028KiB/53234msec) clat (usec): min=34, max=91848, avg=18485.25, stdev=10653.14 lat (usec): min=34, max=91848, avg=18485.95, stdev=10653.20 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 6915], 10.00th=[ 8160], 20.00th=[10028], | 30.00th=[11863], 40.00th=[14353], 50.00th=[16581], 60.00th=[19006], | 70.00th=[21627], 80.00th=[25297], 90.00th=[31589], 95.00th=[38536], | 99.00th=[55313], 99.50th=[63701], 99.90th=[87557], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 39, max= 216, per=25.20%, avg=113.65, stdev=32.88, samples=104 iops : min= 9, max= 54, avg=28.00, stdev= 8.32, samples=104 write: IOPS=29, BW=118KiB/s (120kB/s)(6260KiB/53234msec); 0 zone resets clat (usec): min=638, max=647247, avg=16090.87, stdev=19991.68 lat (usec): min=639, max=647249, avg=16092.81, stdev=19992.49 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 2212], 10.00th=[ 2802], 20.00th=[ 4555], | 30.00th=[ 7504], 40.00th=[ 10421], 50.00th=[ 12911], 60.00th=[ 15926], | 70.00th=[ 19792], 80.00th=[ 24773], 90.00th=[ 33162], 95.00th=[ 40109], | 99.00th=[ 52167], 99.50th=[ 56886], 99.90th=[ 66323], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 47, max= 224, per=24.92%, avg=117.64, stdev=38.93, samples=104 iops : min= 11, max= 56, avg=29.00, stdev= 9.88, samples=104 lat (usec) : 50=0.23%, 100=0.29%, 250=0.59%, 500=0.16%, 750=0.10% lat (usec) : 1000=0.36% lat (msec) : 2=1.33%, 4=7.19%, 10=18.95%, 20=38.28%, 50=31.05% lat (msec) : 100=1.43%, 750=0.03% cpu : usr=0.11%, sys=25.30%, ctx=9157, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183242: Fri May 15 07:11:00 2026 read: IOPS=28, BW=116KiB/s (118kB/s)(6052KiB/52321msec) clat (usec): min=27, max=82294, avg=18226.30, stdev=10444.69 lat (usec): min=28, max=82294, avg=18226.97, stdev=10444.77 clat percentiles (usec): | 1.00th=[ 85], 5.00th=[ 6128], 10.00th=[ 7963], 20.00th=[10028], | 30.00th=[11731], 40.00th=[14091], 50.00th=[16188], 60.00th=[18744], | 70.00th=[21365], 80.00th=[25560], 90.00th=[32113], 95.00th=[38011], | 99.00th=[51643], 99.50th=[62129], 99.90th=[67634], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 39, max= 232, per=25.86%, avg=116.62, stdev=35.45, samples=103 iops : min= 9, max= 58, avg=28.74, stdev= 8.96, samples=103 write: IOPS=29, BW=119KiB/s (122kB/s)(6236KiB/52321msec); 0 zone resets clat (usec): min=652, max=630363, avg=15750.05, stdev=19762.49 lat (usec): min=652, max=630363, avg=15750.91, stdev=19762.59 clat percentiles (usec): | 1.00th=[ 955], 5.00th=[ 2245], 10.00th=[ 2737], 20.00th=[ 3851], | 30.00th=[ 6456], 40.00th=[ 9765], 50.00th=[ 12387], 60.00th=[ 15401], | 70.00th=[ 20055], 80.00th=[ 25297], 90.00th=[ 32375], 95.00th=[ 39060], | 99.00th=[ 52167], 99.50th=[ 57934], 99.90th=[ 81265], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 20, max= 232, per=25.20%, avg=118.92, stdev=41.80, samples=104 iops : min= 5, max= 58, avg=29.32, stdev=10.57, samples=104 lat (usec) : 50=0.20%, 100=0.59%, 250=0.94%, 750=0.16%, 1000=0.39% lat (msec) : 2=1.11%, 4=9.11%, 10=17.90%, 20=37.14%, 50=31.12% lat (msec) : 100=1.30%, 750=0.03% cpu : usr=0.11%, sys=25.20%, ctx=8955, 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=451KiB/s (462kB/s), 113KiB/s-116KiB/s (116kB/s-118kB/s), io=23.4MiB (24.6MB), run=52063-53234msec WRITE: bw=472KiB/s (484kB/s), 118KiB/s-121KiB/s (120kB/s-124kB/s), io=24.6MiB (25.7MB), run=52063-53234msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183243: Fri May 15 07:11:06 2026 read: IOPS=25, BW=101KiB/s (103kB/s)(5992KiB/59313msec) clat (msec): min=2, max=604, avg=17.26, stdev=20.70 lat (msec): min=2, max=604, avg=17.26, stdev=20.70 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 39], 95.00th=[ 46], | 99.00th=[ 68], 99.50th=[ 73], 99.90th=[ 92], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 23, max= 440, per=25.17%, avg=101.68, stdev=81.86, samples=117 iops : min= 5, max= 110, avg=25.08, stdev=20.60, samples=117 write: IOPS=26, BW=106KiB/s (109kB/s)(6296KiB/59313msec); 0 zone resets clat (usec): min=3938, max=93411, avg=21157.11, stdev=15497.43 lat (usec): min=3938, max=93412, avg=21157.91, stdev=15497.48 clat percentiles (usec): | 1.00th=[ 4948], 5.00th=[ 5604], 10.00th=[ 6128], 20.00th=[ 7177], | 30.00th=[ 8717], 40.00th=[12780], 50.00th=[16909], 60.00th=[21890], | 70.00th=[27395], 80.00th=[33817], 90.00th=[41681], 95.00th=[50594], | 99.00th=[68682], 99.50th=[89654], 99.90th=[92799], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 24, max= 392, per=25.24%, avg=106.75, stdev=82.78, samples=117 iops : min= 6, max= 98, avg=26.34, stdev=20.82, samples=117 lat (msec) : 4=2.41%, 10=33.98%, 20=26.27%, 50=32.94%, 100=4.36% lat (msec) : 750=0.03% cpu : usr=0.12%, sys=13.11%, ctx=6044, 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=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=183244: Fri May 15 07:11:06 2026 read: IOPS=25, BW=100KiB/s (103kB/s)(5940KiB/59308msec) clat (msec): min=2, max=629, avg=17.42, stdev=21.70 lat (msec): min=2, max=629, avg=17.42, stdev=21.70 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 10], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 27], 90.00th=[ 39], 95.00th=[ 48], | 99.00th=[ 71], 99.50th=[ 79], 99.90th=[ 97], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 31, max= 408, per=24.97%, avg=100.86, stdev=81.83, samples=117 iops : min= 7, max= 102, avg=24.87, stdev=20.59, samples=117 write: IOPS=26, BW=107KiB/s (110kB/s)(6348KiB/59308msec); 0 zone resets clat (msec): min=4, max=108, avg=20.97, stdev=15.05 lat (msec): min=4, max=108, avg=20.97, stdev=15.05 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 34], 90.00th=[ 42], 95.00th=[ 51], | 99.00th=[ 67], 99.50th=[ 78], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 23, max= 400, per=25.45%, avg=107.63, stdev=82.15, samples=117 iops : min= 5, max= 100, avg=26.56, stdev=20.66, samples=117 lat (msec) : 4=2.80%, 10=34.31%, 20=26.60%, 50=31.54%, 100=4.65% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.08%, sys=13.12%, ctx=6057, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183245: Fri May 15 07:11:06 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(6028KiB/59223msec) clat (usec): min=2887, max=94517, avg=16557.77, stdev=13807.46 lat (usec): min=2888, max=94518, avg=16558.45, stdev=13807.51 clat percentiles (usec): | 1.00th=[ 3458], 5.00th=[ 4015], 10.00th=[ 4293], 20.00th=[ 5080], | 30.00th=[ 6652], 40.00th=[ 9896], 50.00th=[12387], 60.00th=[15139], | 70.00th=[19006], 80.00th=[25560], 90.00th=[35914], 95.00th=[44827], | 99.00th=[62653], 99.50th=[73925], 99.90th=[88605], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 16, max= 424, per=24.99%, avg=100.97, stdev=80.59, samples=116 iops : min= 4, max= 106, avg=24.90, stdev=20.27, samples=116 write: IOPS=26, BW=106KiB/s (108kB/s)(6260KiB/59223msec); 0 zone resets clat (msec): min=4, max=636, avg=21.80, stdev=22.06 lat (msec): min=4, max=636, avg=21.80, stdev=22.06 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 33], 90.00th=[ 44], 95.00th=[ 51], | 99.00th=[ 75], 99.50th=[ 90], 99.90th=[ 107], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 23, max= 384, per=24.74%, avg=104.63, stdev=78.96, samples=116 iops : min= 5, max= 96, avg=25.81, stdev=19.88, samples=116 lat (msec) : 4=2.28%, 10=34.02%, 20=26.95%, 50=32.29%, 100=4.36% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.08%, sys=13.20%, ctx=5967, 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=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=183246: Fri May 15 07:11:06 2026 read: IOPS=25, BW=102KiB/s (105kB/s)(6052KiB/59298msec) clat (usec): min=2454, max=92797, avg=17047.89, stdev=14119.37 lat (usec): min=2454, max=92797, avg=17048.53, stdev=14119.43 clat percentiles (usec): | 1.00th=[ 3195], 5.00th=[ 4080], 10.00th=[ 4424], 20.00th=[ 5211], | 30.00th=[ 6718], 40.00th=[ 9765], 50.00th=[12387], 60.00th=[15926], | 70.00th=[20317], 80.00th=[26870], 90.00th=[38536], 95.00th=[44827], | 99.00th=[60556], 99.50th=[71828], 99.90th=[91751], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 16, max= 400, per=25.46%, avg=102.85, stdev=80.27, samples=117 iops : min= 4, max= 100, avg=25.37, stdev=20.19, samples=117 write: IOPS=26, BW=105KiB/s (108kB/s)(6236KiB/59298msec); 0 zone resets clat (msec): min=4, max=633, avg=21.39, stdev=21.89 lat (msec): min=4, max=633, avg=21.39, stdev=21.89 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 28], 80.00th=[ 33], 90.00th=[ 42], 95.00th=[ 51], | 99.00th=[ 72], 99.50th=[ 89], 99.90th=[ 96], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 47, max= 392, per=25.03%, avg=105.86, stdev=81.16, samples=117 iops : min= 11, max= 98, avg=26.12, stdev=20.42, samples=117 lat (msec) : 4=2.28%, 10=35.16%, 20=25.59%, 50=32.65%, 100=4.30% lat (msec) : 750=0.03% cpu : usr=0.09%, sys=13.14%, ctx=5986, 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=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=405KiB/s (415kB/s), 100KiB/s-102KiB/s (103kB/s-105kB/s), io=23.4MiB (24.6MB), run=59223-59313msec WRITE: bw=424KiB/s (434kB/s), 105KiB/s-107KiB/s (108kB/s-110kB/s), io=24.6MiB (25.7MB), run=59223-59313msec 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=183266: Fri May 15 07:11:24 2026 read: IOPS=28, BW=462KiB/s (473kB/s)(5920KiB/12826msec) clat (usec): min=38, max=74773, avg=17339.36, stdev=9963.95 lat (usec): min=39, max=74774, avg=17340.12, stdev=9964.01 clat percentiles (usec): | 1.00th=[ 75], 5.00th=[ 151], 10.00th=[ 8848], 20.00th=[10945], | 30.00th=[12518], 40.00th=[13960], 50.00th=[15664], 60.00th=[17433], | 70.00th=[19530], 80.00th=[21890], 90.00th=[29230], 95.00th=[36963], | 99.00th=[56361], 99.50th=[59507], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 222, max= 672, per=24.33%, avg=454.24, stdev=129.07, samples=25 iops : min= 13, max= 42, avg=27.80, stdev= 8.13, samples=25 write: IOPS=31, BW=496KiB/s (508kB/s)(6368KiB/12826msec); 0 zone resets clat (usec): min=1071, max=62059, avg=15971.25, stdev=11785.97 lat (usec): min=1071, max=62061, avg=15972.62, stdev=11785.96 clat percentiles (usec): | 1.00th=[ 2114], 5.00th=[ 3687], 10.00th=[ 4080], 20.00th=[ 5014], | 30.00th=[ 7767], 40.00th=[10945], 50.00th=[13435], 60.00th=[15795], | 70.00th=[19792], 80.00th=[23987], 90.00th=[30802], 95.00th=[38011], | 99.00th=[58983], 99.50th=[61080], 99.90th=[62129], 99.95th=[62129], | 99.99th=[62129] bw ( KiB/s): min= 254, max= 798, per=25.20%, avg=494.96, stdev=123.48, samples=25 iops : min= 15, max= 49, avg=30.32, stdev= 7.73, samples=25 lat (usec) : 50=0.13%, 100=1.04%, 250=1.43% lat (msec) : 2=0.39%, 4=4.17%, 10=19.14%, 20=45.05%, 50=26.69% lat (msec) : 100=1.95% cpu : usr=0.11%, sys=27.31%, ctx=2646, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183267: Fri May 15 07:11:24 2026 read: IOPS=28, BW=452KiB/s (463kB/s)(5744KiB/12698msec) clat (usec): min=55, max=66305, avg=18741.78, stdev=10725.27 lat (usec): min=56, max=66306, avg=18742.55, stdev=10725.37 clat percentiles (usec): | 1.00th=[ 82], 5.00th=[ 490], 10.00th=[ 8848], 20.00th=[10945], | 30.00th=[13173], 40.00th=[15008], 50.00th=[17171], 60.00th=[19006], | 70.00th=[21365], 80.00th=[25035], 90.00th=[31065], 95.00th=[39584], | 99.00th=[59507], 99.50th=[65274], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 256, max= 672, per=24.19%, avg=451.72, stdev=131.73, samples=25 iops : min= 16, max= 42, avg=27.64, stdev= 8.15, samples=25 write: IOPS=32, BW=515KiB/s (528kB/s)(6544KiB/12698msec); 0 zone resets clat (usec): min=1169, max=59433, avg=14470.34, stdev=10332.10 lat (usec): min=1170, max=59434, avg=14471.65, stdev=10332.15 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 3458], 10.00th=[ 4228], 20.00th=[ 5473], | 30.00th=[ 6980], 40.00th=[ 9241], 50.00th=[11731], 60.00th=[14746], | 70.00th=[18220], 80.00th=[22938], 90.00th=[28705], 95.00th=[33424], | 99.00th=[47973], 99.50th=[55837], 99.90th=[59507], 99.95th=[59507], | 99.99th=[59507] bw ( KiB/s): min= 222, max= 768, per=26.23%, avg=515.12, stdev=136.79, samples=25 iops : min= 13, max= 48, avg=31.60, stdev= 8.68, samples=25 lat (usec) : 100=0.78%, 250=1.43%, 500=0.13% lat (msec) : 2=1.04%, 4=3.52%, 10=21.88%, 20=40.76%, 50=28.91% lat (msec) : 100=1.56% cpu : usr=0.09%, sys=27.70%, ctx=2684, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183268: Fri May 15 07:11:24 2026 read: IOPS=30, BW=491KiB/s (503kB/s)(6256KiB/12748msec) clat (usec): min=63, max=65522, avg=17343.94, stdev=9362.46 lat (usec): min=65, max=65523, avg=17344.80, stdev=9362.53 clat percentiles (usec): | 1.00th=[ 78], 5.00th=[ 129], 10.00th=[ 8979], 20.00th=[10945], | 30.00th=[12387], 40.00th=[13698], 50.00th=[16057], 60.00th=[17957], | 70.00th=[20317], 80.00th=[23725], 90.00th=[27657], 95.00th=[33817], | 99.00th=[49546], 99.50th=[59507], 99.90th=[65274], 99.95th=[65274], | 99.99th=[65274] bw ( KiB/s): min= 254, max= 702, per=26.35%, avg=492.04, stdev=123.65, samples=25 iops : min= 15, max= 43, avg=30.16, stdev= 7.80, samples=25 write: IOPS=29, BW=473KiB/s (485kB/s)(6032KiB/12748msec); 0 zone resets clat (usec): min=1255, max=93095, avg=15688.99, stdev=12306.29 lat (usec): min=1257, max=93097, avg=15690.34, stdev=12306.35 clat percentiles (usec): | 1.00th=[ 2245], 5.00th=[ 3687], 10.00th=[ 4080], 20.00th=[ 5080], | 30.00th=[ 8094], 40.00th=[10683], 50.00th=[12911], 60.00th=[15270], | 70.00th=[17957], 80.00th=[22676], 90.00th=[31327], 95.00th=[38536], | 99.00th=[60031], 99.50th=[70779], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 254, max= 733, per=23.67%, avg=464.92, stdev=138.91, samples=25 iops : min= 15, max= 45, avg=28.48, stdev= 8.77, samples=25 lat (usec) : 100=1.30%, 250=1.30%, 1000=0.13% lat (msec) : 2=0.26%, 4=4.43%, 10=17.97%, 20=45.57%, 50=27.34% lat (msec) : 100=1.69% cpu : usr=0.07%, sys=27.43%, ctx=2642, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183269: Fri May 15 07:11:24 2026 read: IOPS=29, BW=477KiB/s (489kB/s)(6032KiB/12642msec) clat (usec): min=23, max=78923, avg=18358.83, stdev=10807.09 lat (usec): min=23, max=78923, avg=18359.61, stdev=10807.16 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 123], 10.00th=[ 8586], 20.00th=[10945], | 30.00th=[12780], 40.00th=[14615], 50.00th=[16909], 60.00th=[19530], | 70.00th=[22152], 80.00th=[24511], 90.00th=[30016], 95.00th=[34866], | 99.00th=[64226], 99.50th=[78119], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 223, max= 672, per=25.37%, avg=473.75, stdev=109.89, samples=24 iops : min= 13, max= 42, avg=29.04, stdev= 6.85, samples=24 write: IOPS=30, BW=495KiB/s (507kB/s)(6256KiB/12642msec); 0 zone resets clat (usec): min=1004, max=57815, avg=14584.40, stdev=10096.52 lat (usec): min=1006, max=57818, avg=14585.94, stdev=10096.43 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 3425], 10.00th=[ 4113], 20.00th=[ 5145], | 30.00th=[ 7308], 40.00th=[10159], 50.00th=[12387], 60.00th=[15401], | 70.00th=[18744], 80.00th=[22676], 90.00th=[28443], 95.00th=[33817], | 99.00th=[45876], 99.50th=[50594], 99.90th=[57934], 99.95th=[57934], | 99.99th=[57934] bw ( KiB/s): min= 255, max= 670, per=25.16%, avg=494.08, stdev=112.12, samples=24 iops : min= 15, max= 41, avg=30.29, stdev= 7.06, samples=24 lat (usec) : 50=0.39%, 100=1.30%, 250=1.30% lat (msec) : 2=0.65%, 4=4.17%, 10=20.70%, 20=39.71%, 50=30.73% lat (msec) : 100=1.04% cpu : usr=0.13%, sys=27.66%, ctx=2569, 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=1867KiB/s (1912kB/s), 452KiB/s-491KiB/s (463kB/s-503kB/s), io=23.4MiB (24.5MB), run=12642-12826msec WRITE: bw=1965KiB/s (2012kB/s), 473KiB/s-515KiB/s (485kB/s-528kB/s), io=24.6MiB (25.8MB), run=12642-12826msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183271: Fri May 15 07:11:26 2026 read: IOPS=25, BW=404KiB/s (413kB/s)(5920KiB/14662msec) clat (usec): min=3346, max=81838, avg=17167.22, stdev=12581.66 lat (usec): min=3347, max=81839, avg=17167.88, stdev=12581.72 clat percentiles (usec): | 1.00th=[ 4293], 5.00th=[ 4948], 10.00th=[ 5932], 20.00th=[ 7832], | 30.00th=[10159], 40.00th=[11469], 50.00th=[12911], 60.00th=[15139], | 70.00th=[18744], 80.00th=[25297], 90.00th=[33817], 95.00th=[41681], | 99.00th=[63701], 99.50th=[81265], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 190, max= 928, per=24.72%, avg=401.17, stdev=207.22, samples=29 iops : min= 11, max= 58, avg=24.76, stdev=13.02, samples=29 write: IOPS=27, BW=434KiB/s (445kB/s)(6368KiB/14662msec); 0 zone resets clat (usec): min=5143, max=84823, avg=20743.74, stdev=13676.28 lat (usec): min=5144, max=84824, avg=20745.25, stdev=13676.32 clat percentiles (usec): | 1.00th=[ 5473], 5.00th=[ 6718], 10.00th=[ 7898], 20.00th=[10028], | 30.00th=[12256], 40.00th=[13960], 50.00th=[15926], 60.00th=[19268], | 70.00th=[24249], 80.00th=[31851], 90.00th=[39584], 95.00th=[47973], | 99.00th=[69731], 99.50th=[84411], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 204, max= 1056, per=25.39%, avg=433.45, stdev=205.72, samples=29 iops : min= 12, max= 66, avg=26.76, stdev=13.01, samples=29 lat (msec) : 4=0.26%, 10=24.22%, 20=42.84%, 50=29.30%, 100=3.39% cpu : usr=0.09%, sys=13.31%, ctx=1541, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183272: Fri May 15 07:11:26 2026 read: IOPS=24, BW=389KiB/s (399kB/s)(5744KiB/14748msec) clat (usec): min=3880, max=71548, avg=16334.08, stdev=12233.55 lat (usec): min=3880, max=71550, avg=16334.74, stdev=12233.60 clat percentiles (usec): | 1.00th=[ 4293], 5.00th=[ 5014], 10.00th=[ 5669], 20.00th=[ 7046], | 30.00th=[ 9241], 40.00th=[10683], 50.00th=[12256], 60.00th=[13698], | 70.00th=[16909], 80.00th=[22152], 90.00th=[34866], 95.00th=[42730], | 99.00th=[60556], 99.50th=[62653], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 159, max= 1088, per=23.86%, avg=387.24, stdev=207.01, samples=29 iops : min= 9, max= 68, avg=23.86, stdev=13.08, samples=29 write: IOPS=27, BW=444KiB/s (454kB/s)(6544KiB/14748msec); 0 zone resets clat (usec): min=5699, max=81598, avg=21598.27, stdev=13592.80 lat (usec): min=5700, max=81599, avg=21599.66, stdev=13592.90 clat percentiles (usec): | 1.00th=[ 6063], 5.00th=[ 6915], 10.00th=[ 7898], 20.00th=[10159], | 30.00th=[12387], 40.00th=[14353], 50.00th=[17695], 60.00th=[20579], | 70.00th=[27395], 80.00th=[32900], 90.00th=[39584], 95.00th=[49021], | 99.00th=[63177], 99.50th=[66847], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 192, max= 1056, per=25.55%, avg=436.21, stdev=223.36, samples=29 iops : min= 12, max= 66, avg=26.93, stdev=14.10, samples=29 lat (msec) : 4=0.13%, 10=27.34%, 20=38.15%, 50=30.47%, 100=3.91% cpu : usr=0.08%, sys=12.98%, ctx=1515, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183273: Fri May 15 07:11:26 2026 read: IOPS=26, BW=425KiB/s (435kB/s)(6256KiB/14736msec) clat (usec): min=3291, max=71838, avg=16567.14, stdev=11936.25 lat (usec): min=3291, max=71839, avg=16567.97, stdev=11936.35 clat percentiles (usec): | 1.00th=[ 4113], 5.00th=[ 5407], 10.00th=[ 6128], 20.00th=[ 7767], | 30.00th=[ 9372], 40.00th=[10552], 50.00th=[11994], 60.00th=[14615], | 70.00th=[17433], 80.00th=[23462], 90.00th=[35390], 95.00th=[41681], | 99.00th=[57934], 99.50th=[63701], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 127, max= 1088, per=26.09%, avg=423.45, stdev=234.17, samples=29 iops : min= 7, max= 68, avg=26.14, stdev=14.74, samples=29 write: IOPS=25, BW=409KiB/s (419kB/s)(6032KiB/14736msec); 0 zone resets clat (usec): min=4651, max=93126, avg=21845.50, stdev=14793.44 lat (usec): min=4652, max=93128, avg=21846.89, stdev=14793.61 clat percentiles (usec): | 1.00th=[ 5735], 5.00th=[ 6849], 10.00th=[ 7439], 20.00th=[ 9634], | 30.00th=[11994], 40.00th=[14091], 50.00th=[17433], 60.00th=[21890], | 70.00th=[26346], 80.00th=[32637], 90.00th=[41681], 95.00th=[51119], | 99.00th=[76022], 99.50th=[78119], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 223, max= 1024, per=23.51%, avg=401.24, stdev=190.14, samples=29 iops : min= 13, max= 64, avg=24.76, stdev=12.03, samples=29 lat (msec) : 4=0.39%, 10=28.39%, 20=36.20%, 50=31.25%, 100=3.78% cpu : usr=0.09%, sys=13.12%, ctx=1566, 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=183274: Fri May 15 07:11:26 2026 read: IOPS=25, BW=409KiB/s (419kB/s)(6032KiB/14755msec) clat (usec): min=2722, max=84084, avg=17494.45, stdev=13820.20 lat (usec): min=2724, max=84085, avg=17495.20, stdev=13820.28 clat percentiles (usec): | 1.00th=[ 3425], 5.00th=[ 4817], 10.00th=[ 5538], 20.00th=[ 7635], | 30.00th=[ 9503], 40.00th=[10945], 50.00th=[12387], 60.00th=[13960], | 70.00th=[18220], 80.00th=[26608], 90.00th=[37487], 95.00th=[47973], | 99.00th=[69731], 99.50th=[73925], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 191, max= 1056, per=24.80%, avg=402.52, stdev=207.71, samples=29 iops : min= 11, max= 66, avg=24.83, stdev=13.09, samples=29 write: IOPS=26, BW=424KiB/s (434kB/s)(6256KiB/14755msec); 0 zone resets clat (usec): min=5224, max=88528, avg=20729.22, stdev=13304.56 lat (usec): min=5225, max=88529, avg=20730.96, stdev=13304.74 clat percentiles (usec): | 1.00th=[ 5800], 5.00th=[ 6783], 10.00th=[ 8291], 20.00th=[10290], | 30.00th=[12649], 40.00th=[14746], 50.00th=[16909], 60.00th=[20055], | 70.00th=[24249], 80.00th=[28443], 90.00th=[37487], 95.00th=[45876], | 99.00th=[76022], 99.50th=[78119], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 190, max= 1152, per=24.55%, avg=419.07, stdev=215.49, samples=29 iops : min= 11, max= 72, avg=25.86, stdev=13.62, samples=29 lat (msec) : 4=0.65%, 10=25.52%, 20=39.58%, 50=30.47%, 100=3.78% cpu : usr=0.07%, sys=12.97%, ctx=1563, 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=1623KiB/s (1662kB/s), 389KiB/s-425KiB/s (399kB/s-435kB/s), io=23.4MiB (24.5MB), run=14662-14755msec WRITE: bw=1708KiB/s (1749kB/s), 409KiB/s-444KiB/s (419kB/s-454kB/s), io=24.6MiB (25.8MB), run=14662-14755msec 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=183287: Fri May 15 07:11:34 2026 read: IOPS=3, BW=4091KiB/s (4190kB/s)(7168KiB/1752msec) clat (usec): min=517, max=378883, avg=125789.82, stdev=125450.14 lat (usec): min=518, max=378884, avg=125790.80, stdev=125450.08 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 4817], | 30.00th=[121111], 40.00th=[121111], 50.00th=[122160], 60.00th=[125305], | 70.00th=[125305], 80.00th=[127402], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 3424, max= 5885, per=56.19%, avg=4654.50, stdev=1740.19, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2922KiB/s (2993kB/s)(5120KiB/1752msec); 0 zone resets clat (msec): min=81, max=346, avg=164.71, stdev=104.77 lat (msec): min=81, max=346, avg=164.76, stdev=104.77 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 129], 60.00th=[ 129], | 70.00th=[ 150], 80.00th=[ 150], 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= 1961, max= 6144, per=34.94%, avg=4052.50, stdev=2957.83, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 100=8.33%, 250=58.33%, 500=16.67% cpu : usr=0.00%, sys=50.20%, ctx=515, 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=183288: Fri May 15 07:11:34 2026 read: IOPS=0, BW=828KiB/s (848kB/s)(2048KiB/2472msec) clat (msec): min=3, max=131, avg=67.50, stdev=90.91 lat (msec): min=3, max=131, avg=67.50, stdev=90.91 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 132], | 70.00th=[ 132], 80.00th=[ 132], 90.00th=[ 132], 95.00th=[ 132], | 99.00th=[ 132], 99.50th=[ 132], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 1735, max= 2048, per=22.83%, avg=1891.50, stdev=221.32, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=4, BW=4142KiB/s (4242kB/s)(10.0MiB/2472msec); 0 zone resets clat (msec): min=52, max=769, avg=230.64, stdev=233.42 lat (msec): min=52, max=769, avg=230.70, stdev=233.41 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 56], | 30.00th=[ 59], 40.00th=[ 73], 50.00th=[ 144], 60.00th=[ 155], | 70.00th=[ 230], 80.00th=[ 279], 90.00th=[ 489], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1961, max= 5206, per=28.69%, avg=3327.75, stdev=1594.13, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 1.83, samples=4 lat (msec) : 4=8.33%, 100=33.33%, 250=33.33%, 500=16.67%, 1000=8.33% cpu : usr=0.00%, sys=36.22%, ctx=103, 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=183289: Fri May 15 07:11:34 2026 read: IOPS=3, BW=3481KiB/s (3565kB/s)(6144KiB/1765msec) clat (usec): min=411, max=173490, avg=66324.45, stdev=77169.92 lat (usec): min=412, max=173490, avg=66325.32, stdev=77169.89 clat percentiles (usec): | 1.00th=[ 412], 5.00th=[ 412], 10.00th=[ 412], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 515], 50.00th=[ 515], 60.00th=[ 86508], | 70.00th=[135267], 80.00th=[135267], 90.00th=[173016], 95.00th=[173016], | 99.00th=[173016], 99.50th=[173016], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 3923, max= 4096, per=48.40%, avg=4009.50, stdev=122.33, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3481KiB/s (3565kB/s)(6144KiB/1765msec); 0 zone resets clat (msec): min=112, max=643, avg=220.00, stdev=208.17 lat (msec): min=112, max=643, avg=220.04, stdev=208.17 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 169], 80.00th=[ 169], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1961, max= 4096, per=27.18%, avg=3152.67, stdev=1088.95, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 100=8.33%, 250=58.33%, 750=8.33% cpu : usr=0.06%, sys=44.33%, ctx=560, 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=183290: Fri May 15 07:11:34 2026 read: IOPS=2, BW=2136KiB/s (2187kB/s)(5120KiB/2397msec) clat (usec): min=434, max=178045, avg=77032.04, stdev=77146.13 lat (usec): min=434, max=178046, avg=77032.71, stdev=77146.30 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 437], 10.00th=[ 437], 20.00th=[ 437], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 86508], 60.00th=[ 86508], | 70.00th=[119014], 80.00th=[119014], 90.00th=[177210], 95.00th=[177210], | 99.00th=[177210], 99.50th=[177210], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 8192, max= 8192, per=98.89%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2990KiB/s (3062kB/s)(7168KiB/2397msec); 0 zone resets clat (msec): min=131, max=613, avg=285.57, stdev=178.63 lat (msec): min=131, max=613, avg=285.63, stdev=178.62 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 213], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 451], 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= 1692, max= 3923, per=20.93%, avg=2427.75, stdev=1010.86, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 750=8.33% cpu : usr=0.00%, sys=38.61%, ctx=437, 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=8285KiB/s (8484kB/s), 828KiB/s-4091KiB/s (848kB/s-4190kB/s), io=20.0MiB (20.0MB), run=1752-2472msec WRITE: bw=11.3MiB/s (11.9MB/s), 2922KiB/s-4142KiB/s (2993kB/s-4242kB/s), io=28.0MiB (29.4MB), run=1752-2472msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183282: Fri May 15 07:11:34 2026 read: IOPS=4, BW=4115KiB/s (4214kB/s)(7168KiB/1742msec) clat (msec): min=48, max=390, avg=159.07, stdev=122.85 lat (msec): min=48, max=390, avg=159.07, stdev=122.85 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 52], | 30.00th=[ 101], 40.00th=[ 101], 50.00th=[ 109], 60.00th=[ 171], | 70.00th=[ 171], 80.00th=[ 243], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2048, max= 5137, per=48.22%, avg=3760.33, stdev=1571.62, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2939KiB/s (3010kB/s)(5120KiB/1742msec); 0 zone resets clat (msec): min=79, max=213, avg=121.38, stdev=53.13 lat (msec): min=79, max=213, avg=121.45, stdev=53.14 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 104], 60.00th=[ 104], | 70.00th=[ 116], 80.00th=[ 116], 90.00th=[ 213], 95.00th=[ 213], | 99.00th=[ 213], 99.50th=[ 213], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 1712, max= 6144, per=35.98%, avg=3928.00, stdev=3133.90, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (msec) : 50=8.33%, 100=33.33%, 250=50.00%, 500=8.33% cpu : usr=0.00%, sys=18.61%, ctx=124, 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=183283: Fri May 15 07:11:34 2026 read: IOPS=0, BW=832KiB/s (851kB/s)(2048KiB/2463msec) clat (msec): min=45, max=151, avg=98.58, stdev=75.22 lat (msec): min=45, max=151, avg=98.58, stdev=75.22 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 46], | 30.00th=[ 46], 40.00th=[ 46], 50.00th=[ 46], 60.00th=[ 153], | 70.00th=[ 153], 80.00th=[ 153], 90.00th=[ 153], 95.00th=[ 153], | 99.00th=[ 153], 99.50th=[ 153], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 1706, max= 2048, per=24.07%, avg=1877.00, stdev=241.83, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=4, BW=4158KiB/s (4257kB/s)(10.0MiB/2463msec); 0 zone resets clat (msec): min=41, max=736, avg=222.51, stdev=210.82 lat (msec): min=41, max=736, avg=222.58, stdev=210.81 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 48], | 30.00th=[ 55], 40.00th=[ 124], 50.00th=[ 161], 60.00th=[ 178], | 70.00th=[ 203], 80.00th=[ 326], 90.00th=[ 355], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 2048, max= 6826, per=39.60%, avg=4323.33, stdev=2397.10, samples=3 iops : min= 2, max= 6, avg= 4.00, stdev= 2.00, samples=3 lat (msec) : 50=25.00%, 100=8.33%, 250=41.67%, 500=16.67%, 750=8.33% cpu : usr=0.04%, sys=19.01%, ctx=101, 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=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=183284: Fri May 15 07:11:34 2026 read: IOPS=2, BW=2340KiB/s (2396kB/s)(6144KiB/2626msec) clat (msec): min=25, max=246, avg=131.36, stdev=82.50 lat (msec): min=25, max=246, avg=131.36, stdev=82.49 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 26], 10.00th=[ 26], 20.00th=[ 81], | 30.00th=[ 81], 40.00th=[ 82], 50.00th=[ 82], 60.00th=[ 176], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 247], 95.00th=[ 247], | 99.00th=[ 247], 99.50th=[ 247], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 4096, max= 6144, per=65.66%, avg=5120.00, stdev=1448.15, samples=2 iops : min= 4, max= 6, avg= 5.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2340KiB/s (2396kB/s)(6144KiB/2626msec); 0 zone resets clat (msec): min=28, max=1019, avg=301.66, stdev=379.17 lat (msec): min=28, max=1019, avg=301.73, stdev=379.17 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 29], 10.00th=[ 29], 20.00th=[ 40], | 30.00th=[ 40], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 209], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 2048, max= 4096, per=26.61%, avg=2905.50, stdev=1026.81, samples=4 iops : min= 2, max= 4, avg= 2.75, stdev= 0.96, samples=4 lat (msec) : 50=25.00%, 100=16.67%, 250=41.67%, 500=8.33%, 2000=8.33% cpu : usr=0.00%, sys=16.19%, ctx=118, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183285: Fri May 15 07:11:34 2026 read: IOPS=2, BW=2294KiB/s (2349kB/s)(5120KiB/2232msec) clat (msec): min=49, max=398, avg=160.74, stdev=141.75 lat (msec): min=49, max=398, avg=160.74, stdev=141.75 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 79], 40.00th=[ 79], 50.00th=[ 96], 60.00th=[ 96], | 70.00th=[ 182], 80.00th=[ 182], 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= 2048, max= 6144, per=52.53%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 write: IOPS=3, BW=3211KiB/s (3289kB/s)(7168KiB/2232msec); 0 zone resets clat (msec): min=46, max=488, avg=202.88, stdev=169.83 lat (msec): min=46, max=488, avg=202.92, stdev=169.82 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 52], | 30.00th=[ 53], 40.00th=[ 53], 50.00th=[ 190], 60.00th=[ 253], | 70.00th=[ 253], 80.00th=[ 342], 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= 2048, max= 5145, per=28.21%, avg=3080.33, stdev=1788.05, samples=3 iops : min= 2, max= 5, avg= 3.00, stdev= 1.73, samples=3 lat (msec) : 50=16.67%, 100=33.33%, 250=16.67%, 500=33.33% cpu : usr=0.00%, sys=17.44%, ctx=80, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7799KiB/s (7986kB/s), 832KiB/s-4115KiB/s (851kB/s-4214kB/s), io=20.0MiB (20.0MB), run=1742-2626msec WRITE: bw=10.7MiB/s (11.2MB/s), 2340KiB/s-4158KiB/s (2396kB/s-4257kB/s), io=28.0MiB (29.4MB), run=1742-2626msec 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=183296: Fri May 15 07:11:45 2026 read: IOPS=0, BW=4025KiB/s (4121kB/s)(12.0MiB/3053msec) clat (msec): min=297, max=1800, avg=976.82, stdev=762.04 lat (msec): min=297, max=1800, avg=976.82, stdev=762.04 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 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 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.47%, ctx=100, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183297: Fri May 15 07:11:45 2026 read: IOPS=0, BW=1206KiB/s (1235kB/s)(4096KiB/3395msec) clat (nsec): min=2407.8M, max=2407.8M, avg=2407845775.00, stdev= 0.00 lat (nsec): min=2407.8M, max=2407.8M, avg=2407847091.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2400], 5.00th=[ 2400], 10.00th=[ 2400], 20.00th=[ 2400], | 30.00th=[ 2400], 40.00th=[ 2400], 50.00th=[ 2400], 60.00th=[ 2400], | 70.00th=[ 2400], 80.00th=[ 2400], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] 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 write: IOPS=0, BW=2413KiB/s (2471kB/s)(8192KiB/3395msec); 0 zone resets clat (msec): min=329, max=504, avg=417.18, stdev=123.84 lat (msec): min=329, max=505, avg=417.47, stdev=123.84 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 8192, max= 8192, per=84.88%, 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=8.81%, ctx=67, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183298: Fri May 15 07:11:45 2026 write: IOPS=0, BW=3858KiB/s (3951kB/s)(12.0MiB/3185msec); 0 zone resets clat (msec): min=240, max=1594, avg=1021.32, stdev=700.55 lat (msec): min=240, max=1594, avg=1022.06, stdev=700.77 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8143, max= 8143, per=84.37%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.03%, sys=14.26%, ctx=101, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183299: Fri May 15 07:11:45 2026 write: IOPS=1, BW=4295KiB/s (4398kB/s)(12.0MiB/2861msec); 0 zone resets clat (msec): min=533, max=1244, avg=911.96, stdev=357.83 lat (msec): min=533, max=1244, avg=912.26, stdev=357.92 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 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= 8143, max= 8192, per=84.63%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=19.20%, ctx=291, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4826KiB/s (4942kB/s), 1206KiB/s-4025KiB/s (1235kB/s-4121kB/s), io=16.0MiB (16.8MB), run=3053-3395msec WRITE: bw=9652KiB/s (9883kB/s), 2413KiB/s-4295KiB/s (2471kB/s-4398kB/s), io=32.0MiB (33.6MB), run=2861-3395msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183300: Fri May 15 07:11:45 2026 read: IOPS=1, BW=4609KiB/s (4720kB/s)(12.0MiB/2666msec) clat (msec): min=454, max=1497, avg=861.02, stdev=558.10 lat (msec): min=454, max=1497, avg=861.02, stdev=558.10 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 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=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=49.38%, ctx=3041, 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=183301: Fri May 15 07:11:45 2026 read: IOPS=0, BW=1330KiB/s (1362kB/s)(4096KiB/3080msec) clat (nsec): min=1664.8M, max=1664.8M, avg=1664846635.00, stdev= 0.00 lat (nsec): min=1664.8M, max=1664.8M, avg=1664848409.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1670], 5.00th=[ 1670], 10.00th=[ 1670], 20.00th=[ 1670], | 30.00th=[ 1670], 40.00th=[ 1670], 50.00th=[ 1670], 60.00th=[ 1670], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 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 write: IOPS=0, BW=2660KiB/s (2724kB/s)(8192KiB/3080msec); 0 zone resets clat (msec): min=592, max=674, avg=633.09, stdev=58.00 lat (msec): min=592, max=674, avg=633.39, stdev=57.99 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 676], | 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= 8192, max= 8192, per=85.35%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.03%, sys=24.07%, ctx=817, 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=183302: Fri May 15 07:11:45 2026 write: IOPS=0, BW=3599KiB/s (3686kB/s)(12.0MiB/3414msec); 0 zone resets clat (msec): min=124, max=2855, avg=1086.62, stdev=1533.67 lat (msec): min=124, max=2855, avg=1086.91, stdev=1533.65 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 125], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8078, max= 8078, per=84.16%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=9.20%, ctx=88, 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=183303: Fri May 15 07:11:45 2026 write: IOPS=0, BW=3784KiB/s (3875kB/s)(12.0MiB/3247msec); 0 zone resets clat (msec): min=120, max=1664, avg=1051.56, stdev=819.73 lat (msec): min=120, max=1664, avg=1051.95, stdev=819.83 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 1368], 50.00th=[ 1368], 60.00th=[ 1368], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8078, max= 8192, per=84.76%, avg=8135.00, stdev=80.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=11.52%, ctx=319, 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=5319KiB/s (5447kB/s), 1330KiB/s-4609KiB/s (1362kB/s-4720kB/s), io=16.0MiB (16.8MB), run=2666-3080msec WRITE: bw=9598KiB/s (9828kB/s), 2660KiB/s-3784KiB/s (2724kB/s-3875kB/s), io=32.0MiB (33.6MB), run=3080-3414msec