== sanity test 398b: DIO and buffer IO race ============== 11:43:11 (1783352591) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.22284 s, 15.6 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=145652: Mon Jul 6 11:44:16 2026 read: IOPS=27, BW=109KiB/s (111kB/s)(5992KiB/55163msec) clat (usec): min=41, max=699970, avg=18951.59, stdev=21370.04 lat (usec): min=42, max=699971, avg=18952.84, stdev=21370.12 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 265], 10.00th=[ 8029], 20.00th=[ 9896], | 30.00th=[ 11731], 40.00th=[ 13829], 50.00th=[ 15926], 60.00th=[ 18744], | 70.00th=[ 21890], 80.00th=[ 26084], 90.00th=[ 32375], 95.00th=[ 39060], | 99.00th=[ 63177], 99.50th=[ 79168], 99.90th=[137364], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 6, max= 183, per=25.19%, avg=108.31, stdev=29.43, samples=109 iops : min= 1, max= 45, avg=26.69, stdev= 7.39, samples=109 write: IOPS=28, BW=114KiB/s (117kB/s)(6296KiB/55163msec); 0 zone resets clat (usec): min=972, max=134663, avg=16912.20, stdev=15235.72 lat (usec): min=973, max=134664, avg=16913.38, stdev=15235.72 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2245], 10.00th=[ 2933], 20.00th=[ 4080], | 30.00th=[ 6390], 40.00th=[ 9634], 50.00th=[ 13435], 60.00th=[ 17171], | 70.00th=[ 21627], 80.00th=[ 26608], 90.00th=[ 35390], 95.00th=[ 43254], | 99.00th=[ 73925], 99.50th=[ 90702], 99.90th=[114820], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 40, max= 191, per=25.52%, avg=114.82, stdev=29.41, samples=108 iops : min= 10, max= 47, avg=28.31, stdev= 7.40, samples=108 lat (usec) : 50=0.10%, 100=0.62%, 250=1.69%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=1.92%, 4=7.81%, 10=18.46%, 20=34.93%, 50=31.61% lat (msec) : 100=2.25%, 250=0.26%, 750=0.03% cpu : usr=0.12%, sys=25.02%, ctx=9232, 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=145653: Mon Jul 6 11:44:16 2026 read: IOPS=26, BW=107KiB/s (109kB/s)(5940KiB/55743msec) clat (usec): min=34, max=155193, avg=18865.40, stdev=13064.99 lat (usec): min=35, max=155194, avg=18870.65, stdev=13065.49 clat percentiles (usec): | 1.00th=[ 89], 5.00th=[ 5276], 10.00th=[ 7898], 20.00th=[ 10159], | 30.00th=[ 12125], 40.00th=[ 14353], 50.00th=[ 16450], 60.00th=[ 19006], | 70.00th=[ 21890], 80.00th=[ 25560], 90.00th=[ 31851], 95.00th=[ 38536], | 99.00th=[ 69731], 99.50th=[ 88605], 99.90th=[124257], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 6, max= 160, per=24.56%, avg=105.60, stdev=28.13, samples=110 iops : min= 1, max= 40, avg=26.01, stdev= 7.05, samples=110 write: IOPS=28, BW=114KiB/s (117kB/s)(6348KiB/55743msec); 0 zone resets clat (usec): min=921, max=714916, avg=17378.98, stdev=22754.11 lat (usec): min=922, max=714917, avg=17380.16, stdev=22754.12 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2311], 10.00th=[ 2933], 20.00th=[ 4359], | 30.00th=[ 6587], 40.00th=[ 9896], 50.00th=[ 13042], 60.00th=[ 17695], | 70.00th=[ 22414], 80.00th=[ 27395], 90.00th=[ 35390], 95.00th=[ 44827], | 99.00th=[ 65274], 99.50th=[ 79168], 99.90th=[135267], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 6, max= 208, per=24.88%, avg=111.97, stdev=32.95, samples=110 iops : min= 1, max= 52, avg=27.61, stdev= 8.30, samples=110 lat (usec) : 50=0.16%, 100=0.52%, 250=1.43%, 500=0.20%, 1000=0.13% lat (msec) : 2=1.73%, 4=7.49%, 10=18.59%, 20=34.64%, 50=32.49% lat (msec) : 100=2.31%, 250=0.29%, 750=0.03% cpu : usr=0.11%, sys=25.04%, ctx=9271, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145654: Mon Jul 6 11:44:16 2026 read: IOPS=27, BW=110KiB/s (112kB/s)(6028KiB/54884msec) clat (usec): min=39, max=734454, avg=18957.88, stdev=21792.60 lat (usec): min=40, max=734454, avg=18959.55, stdev=21792.32 clat percentiles (usec): | 1.00th=[ 77], 5.00th=[ 198], 10.00th=[ 8094], 20.00th=[ 10028], | 30.00th=[ 12256], 40.00th=[ 14091], 50.00th=[ 16319], 60.00th=[ 19006], | 70.00th=[ 21890], 80.00th=[ 25822], 90.00th=[ 32113], 95.00th=[ 39584], | 99.00th=[ 58459], 99.50th=[ 71828], 99.90th=[112722], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 48, max= 199, per=25.78%, avg=110.84, stdev=32.11, samples=108 iops : min= 12, max= 49, avg=27.31, stdev= 8.05, samples=108 write: IOPS=28, BW=114KiB/s (117kB/s)(6260KiB/54884msec); 0 zone resets clat (usec): min=786, max=102558, avg=16714.45, stdev=14393.20 lat (usec): min=787, max=102560, avg=16716.39, stdev=14393.50 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 2278], 10.00th=[ 2900], 20.00th=[ 4113], | 30.00th=[ 6390], 40.00th=[ 10028], 50.00th=[ 13173], 60.00th=[ 16581], | 70.00th=[ 21365], 80.00th=[ 26870], 90.00th=[ 35390], 95.00th=[ 42730], | 99.00th=[ 65274], 99.50th=[ 83362], 99.90th=[101188], 99.95th=[102237], | 99.99th=[102237] bw ( KiB/s): min= 19, max= 200, per=25.30%, avg=113.85, stdev=29.41, samples=109 iops : min= 4, max= 50, avg=28.07, stdev= 7.42, samples=109 lat (usec) : 50=0.16%, 100=0.65%, 250=1.92%, 500=0.13%, 1000=0.03% lat (msec) : 2=1.56%, 4=8.30%, 10=17.06%, 20=35.55%, 50=32.26% lat (msec) : 100=2.25%, 250=0.10%, 750=0.03% cpu : usr=0.14%, sys=24.86%, ctx=9189, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145655: Mon Jul 6 11:44:16 2026 read: IOPS=27, BW=110KiB/s (112kB/s)(6052KiB/55142msec) clat (usec): min=36, max=169060, avg=18381.42, stdev=12501.99 lat (usec): min=37, max=169061, avg=18382.40, stdev=12502.10 clat percentiles (usec): | 1.00th=[ 79], 5.00th=[ 202], 10.00th=[ 8029], 20.00th=[ 10028], | 30.00th=[ 11863], 40.00th=[ 13829], 50.00th=[ 15926], 60.00th=[ 18220], | 70.00th=[ 21365], 80.00th=[ 25560], 90.00th=[ 31589], 95.00th=[ 38536], | 99.00th=[ 60556], 99.50th=[ 72877], 99.90th=[130548], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 39, max= 184, per=25.57%, avg=109.95, stdev=27.75, samples=108 iops : min= 9, max= 46, avg=27.09, stdev= 7.03, samples=108 write: IOPS=28, BW=113KiB/s (116kB/s)(6236KiB/55142msec); 0 zone resets clat (usec): min=773, max=723249, avg=17440.65, stdev=22833.95 lat (usec): min=773, max=723250, avg=17441.88, stdev=22833.98 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 2147], 10.00th=[ 2868], 20.00th=[ 4146], | 30.00th=[ 6521], 40.00th=[ 10028], 50.00th=[ 13698], 60.00th=[ 17433], | 70.00th=[ 22414], 80.00th=[ 27395], 90.00th=[ 36963], 95.00th=[ 44827], | 99.00th=[ 60031], 99.50th=[ 76022], 99.90th=[100140], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 13, max= 190, per=25.03%, avg=112.62, stdev=28.70, samples=109 iops : min= 3, max= 47, avg=27.77, stdev= 7.18, samples=109 lat (usec) : 50=0.13%, 100=0.85%, 250=1.69%, 500=0.20%, 1000=0.20% lat (msec) : 2=1.89%, 4=7.65%, 10=17.64%, 20=35.68%, 50=31.51% lat (msec) : 100=2.41%, 250=0.13%, 750=0.03% cpu : usr=0.13%, sys=24.88%, ctx=9113, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=431KiB/s (441kB/s), 107KiB/s-110KiB/s (109kB/s-112kB/s), io=23.4MiB (24.6MB), run=54884-55743msec WRITE: bw=451KiB/s (462kB/s), 113KiB/s-114KiB/s (116kB/s-117kB/s), io=24.6MiB (25.7MB), run=54884-55743msec fio: pid=145647, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=145647: Mon Jul 6 11:44:49 2026 read: IOPS=12, BW=50.1KiB/s (51.3kB/s)(2956KiB/58990msec) clat (msec): min=3, max=713, avg=24.24, stdev=30.61 lat (msec): min=3, max=713, avg=24.24, stdev=30.61 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 28], 80.00th=[ 34], 90.00th=[ 46], 95.00th=[ 58], | 99.00th=[ 83], 99.50th=[ 111], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 8, max= 159, per=21.01%, avg=49.78, stdev=25.97, samples=116 iops : min= 2, max= 39, avg=12.03, stdev= 6.52, samples=116 write: IOPS=13, BW=52.1KiB/s (53.4kB/s)(3076KiB/58990msec); 0 zone resets clat (msec): min=19, max=175, avg=53.19, stdev=21.78 lat (msec): min=19, max=175, avg=53.19, stdev=21.78 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 45], 50.00th=[ 50], 60.00th=[ 55], | 70.00th=[ 60], 80.00th=[ 68], 90.00th=[ 80], 95.00th=[ 95], | 99.00th=[ 130], 99.50th=[ 150], 99.90th=[ 176], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 23, max= 128, per=21.02%, avg=52.13, stdev=17.53, samples=116 iops : min= 5, max= 32, avg=12.61, stdev= 4.43, samples=116 lat (msec) : 4=0.13%, 10=8.55%, 20=18.42%, 50=43.74%, 100=26.97% lat (msec) : 250=2.05%, 750=0.07% cpu : usr=0.06%, sys=8.43%, ctx=2907, 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=740,769,0,0 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=145648: Mon Jul 6 11:44:49 2026 read: IOPS=16, BW=67.3KiB/s (68.0kB/s)(5940KiB/88215msec) clat (msec): min=2, max=729, avg=16.71, stdev=23.91 lat (msec): min=2, max=729, avg=16.71, stdev=23.91 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 22], 90.00th=[ 33], 95.00th=[ 45], | 99.00th=[ 83], 99.50th=[ 105], 99.90th=[ 167], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 192, per=28.54%, avg=67.64, stdev=38.98, samples=173 iops : min= 1, max= 48, avg=16.55, stdev= 9.83, samples=173 write: IOPS=17, BW=71.0KiB/s (73.7kB/s)(6348KiB/88215msec); 0 zone resets clat (msec): min=12, max=175, avg=39.82, stdev=21.04 lat (msec): min=12, max=175, avg=39.82, stdev=21.04 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 54], 90.00th=[ 68], 95.00th=[ 80], | 99.00th=[ 118], 99.50th=[ 128], 99.90th=[ 169], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 15, max= 152, per=28.90%, avg=71.66, stdev=33.42, samples=174 iops : min= 3, max= 38, avg=17.56, stdev= 8.46, samples=174 lat (msec) : 4=0.59%, 10=19.34%, 20=20.93%, 50=45.15%, 100=12.83% lat (msec) : 250=1.14%, 750=0.03% cpu : usr=0.11%, sys=8.32%, ctx=6359, 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=145649: Mon Jul 6 11:44:49 2026 read: IOPS=17, BW=68.5KiB/s (70.1kB/s)(6028KiB/87995msec) clat (msec): min=3, max=151, avg=16.73, stdev=15.66 lat (msec): min=3, max=151, avg=16.73, stdev=15.66 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 18], 80.00th=[ 23], 90.00th=[ 35], 95.00th=[ 46], | 99.00th=[ 82], 99.50th=[ 107], 99.90th=[ 127], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 8, max= 176, per=28.94%, avg=68.58, stdev=38.79, samples=174 iops : min= 2, max= 44, avg=16.79, stdev= 9.78, samples=174 write: IOPS=17, BW=71.1KiB/s (72.8kB/s)(6260KiB/87995msec); 0 zone resets clat (msec): min=12, max=784, avg=39.99, stdev=27.62 lat (msec): min=12, max=784, avg=39.99, stdev=27.62 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 54], 90.00th=[ 66], 95.00th=[ 78], | 99.00th=[ 120], 99.50th=[ 132], 99.90th=[ 186], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 23, max= 144, per=28.71%, avg=71.20, stdev=33.51, samples=174 iops : min= 5, max= 36, avg=17.44, stdev= 8.49, samples=174 lat (msec) : 4=0.42%, 10=19.08%, 20=20.67%, 50=45.74%, 100=12.99% lat (msec) : 250=1.07%, 1000=0.03% cpu : usr=0.09%, sys=8.35%, ctx=6342, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145650: Mon Jul 6 11:44:49 2026 read: IOPS=17, BW=68.8KiB/s (70.4kB/s)(6052KiB/88029msec) clat (msec): min=3, max=167, avg=16.86, stdev=16.28 lat (msec): min=3, max=167, avg=16.87, stdev=16.28 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 36], 95.00th=[ 46], | 99.00th=[ 80], 99.50th=[ 105], 99.90th=[ 163], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 7, max= 184, per=29.22%, avg=69.26, stdev=39.88, samples=173 iops : min= 1, max= 46, avg=16.96, stdev=10.04, samples=173 write: IOPS=17, BW=70.8KiB/s (72.5kB/s)(6236KiB/88029msec); 0 zone resets clat (msec): min=12, max=759, avg=39.97, stdev=27.64 lat (msec): min=12, max=759, avg=39.97, stdev=27.64 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 45], 80.00th=[ 55], 90.00th=[ 67], 95.00th=[ 81], | 99.00th=[ 124], 99.50th=[ 133], 99.90th=[ 186], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 23, max= 151, per=28.52%, avg=70.74, stdev=33.63, samples=174 iops : min= 5, max= 37, avg=17.33, stdev= 8.51, samples=174 lat (msec) : 4=0.52%, 10=19.89%, 20=20.35%, 50=45.31%, 100=12.83% lat (msec) : 250=1.07%, 1000=0.03% cpu : usr=0.10%, sys=8.42%, ctx=6414, 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=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=238KiB/s (243kB/s), 50.1KiB/s-68.8KiB/s (51.3kB/s-70.4kB/s), io=20.5MiB (21.5MB), run=58990-88215msec WRITE: bw=248KiB/s (254kB/s), 52.1KiB/s-71.0KiB/s (53.4kB/s-73.7kB/s), io=21.4MiB (22.4MB), run=58990-88215msec 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=145684: Mon Jul 6 11:45:09 2026 read: IOPS=26, BW=419KiB/s (429kB/s)(5920KiB/14145msec) clat (usec): min=53, max=60896, avg=18731.43, stdev=11343.62 lat (usec): min=54, max=60897, avg=18732.31, stdev=11343.66 clat percentiles (usec): | 1.00th=[ 76], 5.00th=[ 118], 10.00th=[ 262], 20.00th=[10945], | 30.00th=[13304], 40.00th=[15795], 50.00th=[17695], 60.00th=[19792], | 70.00th=[22938], 80.00th=[26084], 90.00th=[30278], 95.00th=[39060], | 99.00th=[58459], 99.50th=[60556], 99.90th=[61080], 99.95th=[61080], | 99.99th=[61080] bw ( KiB/s): min= 286, max= 576, per=25.73%, avg=418.61, stdev=96.52, samples=28 iops : min= 17, max= 36, avg=25.68, stdev= 6.21, samples=28 write: IOPS=28, BW=450KiB/s (461kB/s)(6368KiB/14145msec); 0 zone resets clat (usec): min=1458, max=96348, avg=17981.04, stdev=13554.49 lat (usec): min=1460, max=96349, avg=17982.77, stdev=13554.69 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 3032], 10.00th=[ 4293], 20.00th=[ 6194], | 30.00th=[ 8717], 40.00th=[11207], 50.00th=[13829], 60.00th=[18744], | 70.00th=[23462], 80.00th=[27657], 90.00th=[36963], 95.00th=[43779], | 99.00th=[65274], 99.50th=[74974], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 208, max= 669, per=26.26%, avg=449.57, stdev=118.98, samples=28 iops : min= 13, max= 41, avg=27.64, stdev= 7.41, samples=28 lat (usec) : 100=1.30%, 250=3.39%, 500=0.39%, 750=0.13% lat (msec) : 2=1.43%, 4=3.26%, 10=15.89%, 20=36.46%, 50=35.68% lat (msec) : 100=2.08% cpu : usr=0.11%, sys=27.83%, ctx=2838, 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=145685: Mon Jul 6 11:45:09 2026 read: IOPS=24, BW=390KiB/s (400kB/s)(5744KiB/14716msec) clat (usec): min=55, max=130750, avg=19492.45, stdev=14585.77 lat (usec): min=56, max=130750, avg=19493.47, stdev=14585.76 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 115], 10.00th=[ 190], 20.00th=[ 10945], | 30.00th=[ 13566], 40.00th=[ 15926], 50.00th=[ 17433], 60.00th=[ 19792], | 70.00th=[ 22676], 80.00th=[ 27395], 90.00th=[ 33817], 95.00th=[ 41157], | 99.00th=[ 84411], 99.50th=[105382], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 60, max= 608, per=23.67%, avg=385.14, stdev=117.72, samples=29 iops : min= 3, max= 38, avg=23.59, stdev= 7.49, samples=29 write: IOPS=27, BW=445KiB/s (455kB/s)(6544KiB/14716msec); 0 zone resets clat (usec): min=1192, max=91440, avg=18660.60, stdev=14381.36 lat (usec): min=1193, max=91441, avg=18662.35, stdev=14381.76 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 3228], 10.00th=[ 4424], 20.00th=[ 6390], | 30.00th=[ 9241], 40.00th=[12256], 50.00th=[15008], 60.00th=[19006], | 70.00th=[22676], 80.00th=[28705], 90.00th=[38536], 95.00th=[46924], | 99.00th=[65799], 99.50th=[67634], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 159, max= 896, per=25.49%, avg=436.45, stdev=145.94, samples=29 iops : min= 9, max= 56, avg=26.83, stdev= 9.21, samples=29 lat (usec) : 100=0.65%, 250=4.56%, 500=0.26% lat (msec) : 2=1.43%, 4=2.86%, 10=15.76%, 20=36.33%, 50=35.16% lat (msec) : 100=2.73%, 250=0.26% cpu : usr=0.12%, sys=27.26%, ctx=2738, 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=145688: Mon Jul 6 11:45:09 2026 read: IOPS=27, BW=442KiB/s (452kB/s)(6256KiB/14160msec) clat (usec): min=58, max=84265, avg=19668.80, stdev=12001.08 lat (usec): min=60, max=84266, avg=19669.93, stdev=12000.90 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 129], 10.00th=[ 5932], 20.00th=[11600], | 30.00th=[13960], 40.00th=[15795], 50.00th=[18220], 60.00th=[20841], | 70.00th=[22938], 80.00th=[27132], 90.00th=[33162], 95.00th=[43254], | 99.00th=[58983], 99.50th=[72877], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 286, max= 637, per=27.26%, avg=443.50, stdev=95.92, samples=28 iops : min= 17, max= 39, avg=27.25, stdev= 6.06, samples=28 write: IOPS=26, BW=426KiB/s (436kB/s)(6032KiB/14160msec); 0 zone resets clat (usec): min=1348, max=103220, avg=16957.01, stdev=13973.86 lat (usec): min=1350, max=103222, avg=16958.80, stdev=13973.91 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 3425], 10.00th=[ 4555], 20.00th=[ 5866], | 30.00th=[ 8160], 40.00th=[ 10552], 50.00th=[ 13566], 60.00th=[ 16450], | 70.00th=[ 20055], 80.00th=[ 24773], 90.00th=[ 33817], 95.00th=[ 43254], | 99.00th=[ 73925], 99.50th=[ 79168], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 254, max= 736, per=24.78%, avg=424.18, stdev=120.60, samples=28 iops : min= 15, max= 46, avg=26.04, stdev= 7.56, samples=28 lat (usec) : 100=1.43%, 250=3.12%, 500=0.13% lat (msec) : 2=0.78%, 4=2.86%, 10=16.67%, 20=38.02%, 50=33.98% lat (msec) : 100=2.86%, 250=0.13% cpu : usr=0.13%, sys=28.10%, ctx=2763, 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=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=145689: Mon Jul 6 11:45:09 2026 read: IOPS=26, BW=431KiB/s (441kB/s)(6032KiB/13995msec) clat (usec): min=60, max=125124, avg=20249.54, stdev=13359.80 lat (usec): min=61, max=125126, avg=20252.48, stdev=13360.03 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 135], 10.00th=[ 255], 20.00th=[ 11863], | 30.00th=[ 14353], 40.00th=[ 16581], 50.00th=[ 18744], 60.00th=[ 21103], | 70.00th=[ 23987], 80.00th=[ 28181], 90.00th=[ 35390], 95.00th=[ 41681], | 99.00th=[ 65274], 99.50th=[ 84411], 99.90th=[125305], 99.95th=[125305], | 99.99th=[125305] bw ( KiB/s): min= 256, max= 608, per=26.38%, avg=429.19, stdev=88.41, samples=27 iops : min= 16, max= 38, avg=26.33, stdev= 5.62, samples=27 write: IOPS=27, BW=447KiB/s (458kB/s)(6256KiB/13995msec); 0 zone resets clat (usec): min=1006, max=91717, avg=16168.31, stdev=13041.93 lat (usec): min=1007, max=91719, avg=16170.54, stdev=13042.54 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 3720], 10.00th=[ 4621], 20.00th=[ 5276], | 30.00th=[ 6652], 40.00th=[ 9503], 50.00th=[12387], 60.00th=[16188], | 70.00th=[20579], 80.00th=[25560], 90.00th=[34341], 95.00th=[39060], | 99.00th=[60031], 99.50th=[87557], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 254, max= 800, per=26.22%, avg=448.89, stdev=119.78, samples=27 iops : min= 15, max= 50, avg=27.56, stdev= 7.52, samples=27 lat (usec) : 100=1.04%, 250=3.78%, 500=0.39%, 750=0.13% lat (msec) : 2=1.04%, 4=1.69%, 10=19.79%, 20=34.24%, 50=35.81% lat (msec) : 100=1.95%, 250=0.13% cpu : usr=0.11%, sys=28.91%, ctx=2739, 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=1628KiB/s (1667kB/s), 390KiB/s-442KiB/s (400kB/s-452kB/s), io=23.4MiB (24.5MB), run=13995-14716msec WRITE: bw=1712KiB/s (1754kB/s), 426KiB/s-450KiB/s (436kB/s-461kB/s), io=24.6MiB (25.8MB), run=13995-14716msec fio: pid=145686, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=145683: Mon Jul 6 11:45:17 2026 read: IOPS=16, BW=262KiB/s (268kB/s)(5920KiB/22600msec) clat (msec): min=3, max=100, avg=17.92, stdev=16.50 lat (msec): min=3, max=100, avg=17.92, stdev=16.50 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 37], 95.00th=[ 53], | 99.00th=[ 87], 99.50th=[ 92], 99.90th=[ 101], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 95, max= 768, per=25.42%, avg=252.68, stdev=141.48, samples=44 iops : min= 5, max= 48, avg=15.32, stdev= 8.97, samples=44 write: IOPS=17, BW=282KiB/s (289kB/s)(6368KiB/22600msec); 0 zone resets clat (msec): min=14, max=137, avg=40.03, stdev=20.96 lat (msec): min=14, max=137, avg=40.04, stdev=20.96 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 46], 80.00th=[ 53], 90.00th=[ 66], 95.00th=[ 85], | 99.00th=[ 116], 99.50th=[ 127], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 63, max= 544, per=26.58%, avg=274.59, stdev=129.90, samples=44 iops : min= 3, max= 34, avg=16.68, stdev= 8.34, samples=44 lat (msec) : 4=0.65%, 10=17.71%, 20=21.88%, 50=45.44%, 100=12.89% lat (msec) : 250=1.43% cpu : usr=0.10%, sys=9.59%, ctx=1718, 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=145686: Mon Jul 6 11:45:17 2026 read: IOPS=14, BW=226KiB/s (232kB/s)(4272KiB/18885msec) clat (msec): min=4, max=120, avg=18.90, stdev=15.44 lat (msec): min=4, max=120, avg=18.90, stdev=15.44 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 30], 90.00th=[ 43], 95.00th=[ 51], | 99.00th=[ 66], 99.50th=[ 67], 99.90th=[ 121], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 31, max= 672, per=22.79%, avg=226.54, stdev=140.38, samples=37 iops : min= 1, max= 42, avg=13.62, stdev= 9.01, samples=37 write: IOPS=15, BW=249KiB/s (255kB/s)(4704KiB/18885msec); 0 zone resets clat (msec): min=18, max=192, avg=46.76, stdev=22.33 lat (msec): min=18, max=192, avg=46.77, stdev=22.33 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 37], 50.00th=[ 41], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 61], 90.00th=[ 74], 95.00th=[ 94], | 99.00th=[ 128], 99.50th=[ 144], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 96, max= 448, per=23.65%, avg=244.27, stdev=82.44, samples=37 iops : min= 6, max= 28, avg=14.73, stdev= 5.34, samples=37 lat (msec) : 10=18.15%, 20=14.59%, 50=47.51%, 100=17.44%, 250=2.14% cpu : usr=0.09%, sys=9.45%, ctx=1267, 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=145687: Mon Jul 6 11:45:17 2026 read: IOPS=17, BW=278KiB/s (285kB/s)(6256KiB/22498msec) clat (usec): min=3611, max=95597, avg=17749.64, stdev=15450.40 lat (usec): min=3612, max=95599, avg=17750.78, stdev=15450.36 clat percentiles (usec): | 1.00th=[ 4228], 5.00th=[ 5342], 10.00th=[ 6063], 20.00th=[ 7373], | 30.00th=[ 8848], 40.00th=[10028], 50.00th=[11863], 60.00th=[14091], | 70.00th=[17171], 80.00th=[24511], 90.00th=[40109], 95.00th=[50594], | 99.00th=[78119], 99.50th=[89654], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 63, max= 734, per=27.84%, avg=276.73, stdev=166.96, samples=44 iops : min= 3, max= 45, avg=16.82, stdev=10.58, samples=44 write: IOPS=16, BW=268KiB/s (275kB/s)(6032KiB/22498msec); 0 zone resets clat (msec): min=13, max=177, avg=41.02, stdev=23.61 lat (msec): min=13, max=177, avg=41.02, stdev=23.61 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 45], 80.00th=[ 55], 90.00th=[ 71], 95.00th=[ 86], | 99.00th=[ 132], 99.50th=[ 140], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 95, max= 544, per=25.39%, avg=262.23, stdev=126.52, samples=44 iops : min= 5, max= 34, avg=15.91, stdev= 8.10, samples=44 lat (msec) : 4=0.13%, 10=19.79%, 20=22.79%, 50=42.97%, 100=12.76% lat (msec) : 250=1.56% cpu : usr=0.12%, sys=9.95%, ctx=1783, 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=145690: Mon Jul 6 11:45:17 2026 read: IOPS=16, BW=270KiB/s (277kB/s)(6032KiB/22304msec) clat (usec): min=3782, max=76037, avg=16289.78, stdev=12369.13 lat (usec): min=3783, max=76038, avg=16290.79, stdev=12369.10 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 5473], 10.00th=[ 6128], 20.00th=[ 7635], | 30.00th=[ 9372], 40.00th=[10683], 50.00th=[12387], 60.00th=[14222], | 70.00th=[17171], 80.00th=[22676], 90.00th=[31851], 95.00th=[42730], | 99.00th=[66847], 99.50th=[74974], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 63, max= 608, per=26.97%, avg=268.11, stdev=132.07, samples=44 iops : min= 3, max= 38, avg=16.27, stdev= 8.40, samples=44 write: IOPS=17, BW=280KiB/s (287kB/s)(6256KiB/22304msec); 0 zone resets clat (msec): min=15, max=189, avg=41.09, stdev=21.23 lat (msec): min=15, max=189, avg=41.09, stdev=21.23 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 55], 90.00th=[ 67], 95.00th=[ 84], | 99.00th=[ 112], 99.50th=[ 146], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 64, max= 544, per=27.07%, avg=279.59, stdev=121.52, samples=44 iops : min= 4, max= 34, avg=17.00, stdev= 7.79, samples=44 lat (msec) : 4=0.26%, 10=17.06%, 20=23.44%, 50=44.66%, 100=13.54% lat (msec) : 250=1.04% cpu : usr=0.09%, sys=9.80%, ctx=1735, 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=995KiB/s (1019kB/s), 226KiB/s-278KiB/s (232kB/s-285kB/s), io=21.0MiB (23.0MB), run=18885-22600msec WRITE: bw=1034KiB/s (1058kB/s), 249KiB/s-282KiB/s (255kB/s-289kB/s), io=22.8MiB (23.9MB), run=18885-22600msec 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=145697: Mon Jul 6 11:45:27 2026 read: IOPS=3, BW=3125KiB/s (3200kB/s)(7168KiB/2294msec) clat (msec): min=142, max=253, avg=172.96, stdev=37.34 lat (msec): min=142, max=253, avg=172.96, stdev=37.34 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 155], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 161], 60.00th=[ 165], | 70.00th=[ 165], 80.00th=[ 180], 90.00th=[ 253], 95.00th=[ 253], | 99.00th=[ 253], 99.50th=[ 253], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 2048, max= 5215, per=68.67%, avg=3786.33, stdev=1606.05, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2232KiB/s (2285kB/s)(5120KiB/2294msec); 0 zone resets clat (msec): min=128, max=427, avg=209.34, stdev=124.95 lat (msec): min=128, max=427, avg=209.44, stdev=124.94 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 129], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 153], 60.00th=[ 153], | 70.00th=[ 201], 80.00th=[ 201], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 2043, max= 4096, per=35.35%, avg=2729.00, stdev=1183.86, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 250=83.33%, 500=16.67% cpu : usr=0.04%, sys=53.16%, ctx=915, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145698: Mon Jul 6 11:45:27 2026 read: IOPS=0, BW=551KiB/s (565kB/s)(2048KiB/3714msec) clat (msec): min=42, max=143, avg=93.26, stdev=71.23 lat (msec): min=42, max=143, avg=93.27, stdev=71.23 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 43], 10.00th=[ 43], 20.00th=[ 43], | 30.00th=[ 43], 40.00th=[ 43], 50.00th=[ 43], 60.00th=[ 144], | 70.00th=[ 144], 80.00th=[ 144], 90.00th=[ 144], 95.00th=[ 144], | 99.00th=[ 144], 99.50th=[ 144], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 1744, max= 1935, per=33.36%, avg=1839.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2757KiB/s (2823kB/s)(10.0MiB/3714msec); 0 zone resets clat (msec): min=147, max=610, avg=348.61, stdev=155.65 lat (msec): min=147, max=610, avg=348.71, stdev=155.63 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 190], | 30.00th=[ 205], 40.00th=[ 207], 50.00th=[ 338], 60.00th=[ 405], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 481], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 2048, max= 4096, per=47.15%, avg=3639.60, stdev=894.92, samples=5 iops : min= 2, max= 4, avg= 3.20, stdev= 0.84, samples=5 lat (msec) : 50=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=38.62%, ctx=353, 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=145699: Mon Jul 6 11:45:27 2026 read: IOPS=1, BW=1999KiB/s (2047kB/s)(6144KiB/3073msec) clat (msec): min=106, max=402, avg=215.74, stdev=106.64 lat (msec): min=106, max=402, avg=215.74, stdev=106.64 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 226], | 70.00th=[ 257], 80.00th=[ 257], 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= 1935, max= 4096, per=45.89%, avg=2530.50, stdev=1044.97, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1999KiB/s (2047kB/s)(6144KiB/3073msec); 0 zone resets clat (msec): min=132, max=511, avg=288.86, stdev=159.95 lat (msec): min=132, max=511, avg=288.92, stdev=159.96 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 257], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 1935, max= 3488, per=30.81%, avg=2378.50, stdev=741.50, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=58.33%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=41.67%, ctx=745, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145700: Mon Jul 6 11:45:27 2026 read: IOPS=1, BW=1688KiB/s (1729kB/s)(5120KiB/3033msec) clat (usec): min=597, max=233690, avg=146581.51, stdev=88202.18 lat (usec): min=632, max=233691, avg=146589.25, stdev=88188.42 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 594], | 30.00th=[145753], 40.00th=[145753], 50.00th=[160433], 60.00th=[160433], | 70.00th=[191890], 80.00th=[191890], 90.00th=[233833], 95.00th=[233833], | 99.00th=[233833], 99.50th=[233833], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 2043, max= 6144, per=74.24%, avg=4093.50, stdev=2899.84, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2363KiB/s (2420kB/s)(7168KiB/3033msec); 0 zone resets clat (msec): min=173, max=456, avg=326.87, stdev=120.50 lat (msec): min=173, max=456, avg=326.98, stdev=120.51 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 178], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 347], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 435], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1750, max= 4096, per=31.82%, avg=2456.00, stdev=1100.01, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=42.84%, ctx=765, 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=5514KiB/s (5647kB/s), 551KiB/s-3125KiB/s (565kB/s-3200kB/s), io=20.0MiB (20.0MB), run=2294-3714msec WRITE: bw=7720KiB/s (7905kB/s), 1999KiB/s-2757KiB/s (2047kB/s-2823kB/s), io=28.0MiB (29.4MB), run=2294-3714msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145702: Mon Jul 6 11:45:27 2026 read: IOPS=2, BW=2314KiB/s (2369kB/s)(7168KiB/3098msec) clat (msec): min=60, max=687, avg=203.78, stdev=233.98 lat (msec): min=60, max=687, avg=203.79, stdev=233.98 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 65], | 30.00th=[ 70], 40.00th=[ 70], 50.00th=[ 70], 60.00th=[ 146], | 70.00th=[ 146], 80.00th=[ 330], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1954, max= 3953, per=42.93%, avg=2394.40, stdev=871.87, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1653KiB/s (1692kB/s)(5120KiB/3098msec); 0 zone resets clat (msec): min=123, max=598, avg=288.73, stdev=194.72 lat (msec): min=123, max=598, avg=288.82, stdev=194.71 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 184], 60.00th=[ 184], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 1946, max= 4079, per=32.09%, avg=2506.00, stdev=1049.15, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=33.33%, 250=33.33%, 500=16.67%, 750=16.67% cpu : usr=0.03%, sys=14.40%, ctx=317, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145703: Mon Jul 6 11:45:27 2026 read: IOPS=0, BW=558KiB/s (571kB/s)(2048KiB/3671msec) clat (usec): min=63167, max=72876, avg=68022.37, stdev=6865.48 lat (usec): min=63170, max=72878, avg=68024.29, stdev=6864.54 clat percentiles (usec): | 1.00th=[63177], 5.00th=[63177], 10.00th=[63177], 20.00th=[63177], | 30.00th=[63177], 40.00th=[63177], 50.00th=[63177], 60.00th=[72877], | 70.00th=[72877], 80.00th=[72877], 90.00th=[72877], 95.00th=[72877], | 99.00th=[72877], 99.50th=[72877], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 2035, max= 2039, per=36.52%, avg=2037.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2789KiB/s (2856kB/s)(10.0MiB/3671msec); 0 zone resets clat (msec): min=46, max=667, avg=332.31, stdev=201.13 lat (msec): min=46, max=667, avg=332.43, stdev=201.14 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 74], | 30.00th=[ 215], 40.00th=[ 245], 50.00th=[ 279], 60.00th=[ 368], | 70.00th=[ 426], 80.00th=[ 430], 90.00th=[ 575], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1946, max= 4096, per=34.30%, avg=2679.00, stdev=1091.36, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.33, samples=6 lat (msec) : 50=8.33%, 100=25.00%, 250=16.67%, 500=33.33%, 750=16.67% cpu : usr=0.05%, sys=19.16%, 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=145704: Mon Jul 6 11:45:27 2026 read: IOPS=1, BW=1800KiB/s (1843kB/s)(6144KiB/3414msec) clat (msec): min=59, max=430, avg=250.66, stdev=145.58 lat (msec): min=59, max=430, avg=250.66, stdev=145.58 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 114], | 30.00th=[ 114], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 296], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1946, max= 2039, per=35.78%, avg=1996.00, stdev=42.73, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1800KiB/s (1843kB/s)(6144KiB/3414msec); 0 zone resets clat (msec): min=95, max=505, avg=282.36, stdev=161.36 lat (msec): min=95, max=505, avg=282.46, stdev=161.33 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 109], | 30.00th=[ 109], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 305], | 70.00th=[ 405], 80.00th=[ 405], 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= 1946, max= 2023, per=25.27%, avg=1973.60, stdev=30.05, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=15.50%, ctx=142, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145705: Mon Jul 6 11:45:27 2026 read: IOPS=1, BW=1417KiB/s (1451kB/s)(5120KiB/3614msec) clat (msec): min=35, max=499, avg=287.71, stdev=170.03 lat (msec): min=35, max=499, avg=287.71, stdev=170.03 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 36], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 1976, max= 3893, per=47.26%, avg=2636.00, stdev=1089.05, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1983KiB/s (2031kB/s)(7168KiB/3614msec); 0 zone resets clat (msec): min=79, max=749, avg=278.91, stdev=237.81 lat (msec): min=79, max=749, avg=279.08, stdev=237.76 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 100], | 30.00th=[ 110], 40.00th=[ 110], 50.00th=[ 245], 60.00th=[ 268], | 70.00th=[ 268], 80.00th=[ 405], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1976, max= 6144, per=45.31%, avg=3538.75, stdev=1991.03, samples=4 iops : min= 1, max= 6, avg= 2.75, stdev= 2.36, samples=4 lat (msec) : 50=8.33%, 100=16.67%, 250=16.67%, 500=50.00%, 750=8.33% cpu : usr=0.03%, sys=12.95%, ctx=121, 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=5579KiB/s (5713kB/s), 558KiB/s-2314KiB/s (571kB/s-2369kB/s), io=20.0MiB (20.0MB), run=3098-3671msec WRITE: bw=7810KiB/s (7998kB/s), 1653KiB/s-2789KiB/s (1692kB/s-2856kB/s), io=28.0MiB (29.4MB), run=3098-3671msec 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=145714: Mon Jul 6 11:45:36 2026 read: IOPS=1, BW=6861KiB/s (7026kB/s)(12.0MiB/1791msec) clat (msec): min=541, max=626, avg=590.27, stdev=43.59 lat (msec): min=541, max=626, avg=590.27, stdev=43.59 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 5626, max= 8078, per=100.00%, avg=6852.00, stdev=1733.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=14.86%, ctx=76, 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=145717: Mon Jul 6 11:45:36 2026 read: IOPS=0, BW=1612KiB/s (1651kB/s)(4096KiB/2541msec) clat (nsec): min=1111.1M, max=1111.1M, avg=1111074120.00, stdev= 0.00 lat (nsec): min=1111.1M, max=1111.1M, avg=1111074897.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3224KiB/s (3301kB/s)(8192KiB/2541msec); 0 zone resets clat (msec): min=439, max=935, avg=687.65, stdev=350.31 lat (msec): min=440, max=936, avg=688.23, stdev=350.48 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8192, max= 8192, per=63.53%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=12.28%, ctx=73, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145718: Mon Jul 6 11:45:36 2026 write: IOPS=1, BW=5114KiB/s (5236kB/s)(12.0MiB/2403msec); 0 zone resets clat (msec): min=261, max=1479, avg=783.15, stdev=627.15 lat (msec): min=262, max=1479, avg=783.59, stdev=627.21 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8175, max= 8192, per=63.46%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.08%, sys=16.69%, ctx=80, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145719: Mon Jul 6 11:45:36 2026 rand-rw: (groupid=0, jobs=1): err= 0: pid=145712: Mon Jul 6 11:45:36 2026 read: IOPS=1, BW=7095KiB/s (7265kB/s)(12.0MiB/1732msec) clat (msec): min=556, max=584, avg=571.53, stdev=13.82 lat (msec): min=556, max=584, avg=571.53, stdev=13.82 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 8159, max= 8192, per=91.02%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=47.02%, ctx=1949, 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=145713: Mon Jul 6 11:45:36 2026 read: IOPS=0, BW=2246KiB/s (2300kB/s)(4096KiB/1824msec) clat (nsec): min=453118k, max=453118k, avg=453117562.00, stdev= 0.00 lat (nsec): min=453121k, max=453121k, avg=453120923.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 5997, max= 5997, per=66.77%, avg=5997.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4491KiB/s (4599kB/s)(8192KiB/1824msec); 0 zone resets clat (msec): min=609, max=718, avg=664.08, stdev=77.54 lat (msec): min=609, max=719, avg=664.34, stdev=77.62 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 718], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 8159, max= 8159, per=64.19%, 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%, 750=66.67% cpu : usr=0.00%, sys=24.25%, ctx=595, 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=145715: Mon Jul 6 11:45:36 2026 write: IOPS=1, BW=4766KiB/s (4881kB/s)(12.0MiB/2578msec); 0 zone resets clat (msec): min=162, max=1934, avg=849.43, stdev=950.64 lat (msec): min=163, max=1935, avg=849.98, stdev=950.67 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 1938], 80.00th=[ 1938], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 8192, max= 8192, per=64.45%, 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%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=14.78%, ctx=64, majf=0, minf=7 IO d write: IOPS=1, BW=5668KiB/s (5804kB/s)(12.0MiB/2168msec); 0 zone resets epths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% clat (msec): min=277, max=1150, avg=709.50, stdev=436.27 submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% lat (msec): min=278, max=1151, avg=710.16, stdev=436.52 complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% clat percentiles (msec): issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], latency : target=0, window=0, percentile=100.00%, depth=16 | 30.00th=[ 279], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], rand-rw: (groupid=0, jobs=1): err= 0: pid=145716: Mon Jul 6 11:45:36 2026 | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], write: IOPS=1, BW=6752KiB/s (6914kB/s)(12.0MiB/1820msec); 0 zone resets | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], clat (msec): min=354, max=949, avg=594.46, stdev=313.46 | 99.99th=[ 1150] lat (msec): min=355, max=950, avg=595.10, stdev=313.79 bw ( KiB/s): min= 8078, max= 8078, per=62.64%, avg=8078.00, stdev= 0.00, samples=1 clat percentiles (msec): iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% | 30.00th=[ 355], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], cpu : usr=0.09%, sys=16.98%, ctx=193, majf=0, minf=10 | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% | 99.99th=[ 953] complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% bw ( KiB/s): min=16318, max=16318, per=100.00%, avg=16318.00, stdev= 0.00, samples=1 issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 latency : target=0, window=0, percentile=100.00%, depth=16 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.11%, sys=15.89%, ctx=74, majf=0, minf=8 Run status group 0 (all jobs): IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% READ: bw=6448KiB/s (6603kB/s), 1612KiB/s-6861KiB/s (1651kB/s-7026kB/s), io=16.0MiB (16.8MB), run=1791-2541msec submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% WRITE: bw=12.6MiB/s (13.2MB/s), 3224KiB/s-5668KiB/s (3301kB/s-5804kB/s), io=32.0MiB (33.6MB), run=2168-2541msec 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=8982KiB/s (9198kB/s), 2246KiB/s-7095KiB/s (2300kB/s-7265kB/s), io=16.0MiB (16.8MB), run=1732-1824msec WRITE: bw=12.4MiB/s (13.0MB/s), 4491KiB/s-6752KiB/s (4599kB/s-6914kB/s), io=32.0MiB (33.6MB), run=1820-2578msec