== sanity test 398b: DIO and buffer IO race ============== 21:48:56 (1786412936) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.3759 s, 7.9 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=178645: Mon Aug 10 21:51:28 2026 read: IOPS=11, BW=46.5KiB/s (47.7kB/s)(5992KiB/128722msec) clat (usec): min=33, max=309236, avg=46927.34, stdev=30933.59 lat (usec): min=34, max=309238, avg=46929.86, stdev=30933.18 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 12780], 10.00th=[ 18220], 20.00th=[ 24249], | 30.00th=[ 29754], 40.00th=[ 34866], 50.00th=[ 40109], 60.00th=[ 45876], | 70.00th=[ 54264], 80.00th=[ 65274], 90.00th=[ 85459], 95.00th=[100140], | 99.00th=[156238], 99.50th=[185598], 99.90th=[248513], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 95, per=25.50%, avg=46.41, stdev=18.70, samples=251 iops : min= 1, max= 23, avg=10.92, stdev= 4.72, samples=251 write: IOPS=12, BW=48.9KiB/s (50.1kB/s)(6296KiB/128722msec); 0 zone resets clat (usec): min=746, max=1267.2k, avg=36804.53, stdev=48064.72 lat (usec): min=747, max=1267.2k, avg=36806.44, stdev=48064.77 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1336], 10.00th=[ 1565], | 20.00th=[ 4359], 30.00th=[ 8455], 40.00th=[ 18220], | 50.00th=[ 26346], 60.00th=[ 35390], 70.00th=[ 46400], | 80.00th=[ 62129], 90.00th=[ 84411], 95.00th=[ 108528], | 99.00th=[ 154141], 99.50th=[ 191890], 99.90th=[ 329253], | 99.95th=[1266680], 99.99th=[1266680] bw ( KiB/s): min= 7, max= 125, per=25.40%, avg=48.51, stdev=22.11, samples=252 iops : min= 1, max= 31, avg=11.46, stdev= 5.55, samples=252 lat (usec) : 50=0.29%, 100=1.01%, 250=0.10%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=6.12%, 4=3.65%, 10=7.06%, 20=9.28%, 50=40.62% lat (msec) : 100=25.85%, 250=5.66%, 500=0.10%, 2000=0.03% cpu : usr=0.09%, sys=5.18%, ctx=6573, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178646: Mon Aug 10 21:51:28 2026 read: IOPS=11, BW=45.7KiB/s (46.8kB/s)(5940KiB/129931msec) clat (usec): min=43, max=276708, avg=48226.30, stdev=32624.81 lat (usec): min=44, max=276710, avg=48228.76, stdev=32624.33 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 12911], 10.00th=[ 18482], 20.00th=[ 25035], | 30.00th=[ 30016], 40.00th=[ 35390], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 55313], 80.00th=[ 66323], 90.00th=[ 85459], 95.00th=[105382], | 99.00th=[170918], 99.50th=[196084], 99.90th=[258999], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 15, max= 95, per=25.03%, avg=45.56, stdev=17.03, samples=253 iops : min= 3, max= 23, avg=10.72, stdev= 4.27, samples=253 write: IOPS=12, BW=48.9KiB/s (50.0kB/s)(6348KiB/129931msec); 0 zone resets clat (usec): min=863, max=1373.1k, avg=36417.85, stdev=50178.77 lat (usec): min=865, max=1373.1k, avg=36419.99, stdev=50179.49 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1336], 10.00th=[ 1680], | 20.00th=[ 4080], 30.00th=[ 8586], 40.00th=[ 15664], | 50.00th=[ 25560], 60.00th=[ 33817], 70.00th=[ 45351], | 80.00th=[ 61604], 90.00th=[ 86508], 95.00th=[ 112722], | 99.00th=[ 160433], 99.50th=[ 191890], 99.90th=[ 265290], | 99.95th=[1367344], 99.99th=[1367344] bw ( KiB/s): min= 7, max= 133, per=25.41%, avg=48.53, stdev=22.94, samples=253 iops : min= 1, max= 33, avg=11.47, stdev= 5.78, samples=253 lat (usec) : 50=0.16%, 100=1.30%, 250=0.07%, 1000=0.07% lat (msec) : 2=5.99%, 4=4.04%, 10=7.36%, 20=9.96%, 50=39.71% lat (msec) : 100=24.93%, 250=6.25%, 500=0.13%, 2000=0.03% cpu : usr=0.08%, sys=5.12%, ctx=6467, 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=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=178647: Mon Aug 10 21:51:28 2026 read: IOPS=11, BW=45.9KiB/s (46.0kB/s)(6028KiB/131342msec) clat (usec): min=40, max=210336, avg=47821.73, stdev=30371.90 lat (usec): min=42, max=210337, avg=47823.19, stdev=30371.93 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 12780], 10.00th=[ 17957], 20.00th=[ 23987], | 30.00th=[ 30016], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 57410], 80.00th=[ 68682], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[160433], 99.50th=[177210], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 7, max= 110, per=25.00%, avg=45.51, stdev=18.31, samples=257 iops : min= 1, max= 27, avg=10.70, stdev= 4.61, samples=257 write: IOPS=11, BW=47.7KiB/s (48.8kB/s)(6260KiB/131342msec); 0 zone resets clat (usec): min=886, max=1117.4k, avg=37545.19, stdev=46741.29 lat (usec): min=887, max=1117.4k, avg=37553.62, stdev=46747.64 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1385], 10.00th=[ 1876], | 20.00th=[ 4424], 30.00th=[ 8848], 40.00th=[ 17433], | 50.00th=[ 25560], 60.00th=[ 36439], 70.00th=[ 47449], | 80.00th=[ 63177], 90.00th=[ 87557], 95.00th=[ 110625], | 99.00th=[ 177210], 99.50th=[ 196084], 99.90th=[ 252707], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 7, max= 159, per=24.72%, avg=47.21, stdev=22.88, samples=257 iops : min= 1, max= 39, avg=11.14, stdev= 5.76, samples=257 lat (usec) : 50=0.29%, 100=1.46%, 250=0.03%, 500=0.03%, 1000=0.03% lat (msec) : 2=5.37%, 4=4.13%, 10=7.00%, 20=9.60%, 50=38.93% lat (msec) : 100=26.76%, 250=6.28%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=5.04%, ctx=6486, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178648: Mon Aug 10 21:51:28 2026 read: IOPS=11, BW=46.5KiB/s (47.6kB/s)(6052KiB/130270msec) clat (usec): min=36, max=294948, avg=47541.66, stdev=33523.10 lat (usec): min=36, max=294950, avg=47543.89, stdev=33523.08 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11863], 10.00th=[ 16581], 20.00th=[ 22414], | 30.00th=[ 28181], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 55837], 80.00th=[ 67634], 90.00th=[ 88605], 95.00th=[107480], | 99.00th=[166724], 99.50th=[196084], 99.90th=[274727], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 126, per=25.54%, avg=46.48, stdev=18.78, samples=253 iops : min= 1, max= 31, avg=10.94, stdev= 4.73, samples=253 write: IOPS=11, BW=47.9KiB/s (49.0kB/s)(6236KiB/130270msec); 0 zone resets clat (usec): min=881, max=1365.9k, avg=37084.94, stdev=50637.83 lat (usec): min=883, max=1365.9k, avg=37092.48, stdev=50637.51 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1336], 10.00th=[ 1795], | 20.00th=[ 3949], 30.00th=[ 8717], 40.00th=[ 17695], | 50.00th=[ 25822], 60.00th=[ 34341], 70.00th=[ 45351], | 80.00th=[ 61080], 90.00th=[ 88605], 95.00th=[ 111674], | 99.00th=[ 168821], 99.50th=[ 191890], 99.90th=[ 256902], | 99.95th=[1367344], 99.99th=[1367344] bw ( KiB/s): min= 7, max= 135, per=24.96%, avg=47.68, stdev=22.36, samples=254 iops : min= 1, max= 33, avg=11.25, stdev= 5.63, samples=254 lat (usec) : 50=0.33%, 100=1.33%, 250=0.16%, 750=0.03%, 1000=0.13% lat (msec) : 2=5.70%, 4=4.52%, 10=6.15%, 20=11.26%, 50=38.64% lat (msec) : 100=24.61%, 250=7.00%, 500=0.10%, 2000=0.03% cpu : usr=0.07%, sys=5.09%, ctx=6560, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=183KiB/s (187kB/s), 45.7KiB/s-46.5KiB/s (46.8kB/s-47.7kB/s), io=23.4MiB (24.6MB), run=128722-131342msec WRITE: bw=191KiB/s (196kB/s), 47.7KiB/s-48.9KiB/s (48.8kB/s-50.1kB/s), io=24.6MiB (25.7MB), run=128722-131342msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178650: Mon Aug 10 21:52:14 2026 read: IOPS=8, BW=33.8KiB/s (34.6kB/s)(5992KiB/177322msec) clat (msec): min=4, max=1206, avg=46.83, stdev=49.05 lat (msec): min=4, max=1206, avg=46.84, stdev=49.05 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 67], 90.00th=[ 103], 95.00th=[ 130], | 99.00th=[ 188], 99.50th=[ 211], 99.90th=[ 317], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 128, per=25.16%, avg=33.96, stdev=22.71, samples=341 iops : min= 1, max= 32, avg= 7.81, stdev= 5.72, samples=341 write: IOPS=8, BW=35.5KiB/s (36.4kB/s)(6296KiB/177322msec); 0 zone resets clat (msec): min=8, max=543, avg=67.95, stdev=48.35 lat (msec): min=8, max=543, avg=67.95, stdev=48.35 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 64], | 70.00th=[ 79], 80.00th=[ 102], 90.00th=[ 132], 95.00th=[ 163], | 99.00th=[ 232], 99.50th=[ 266], 99.90th=[ 347], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 150, per=25.16%, avg=35.48, stdev=22.46, samples=343 iops : min= 1, max= 37, avg= 8.19, stdev= 5.65, samples=343 lat (msec) : 10=2.08%, 20=12.53%, 50=43.42%, 100=26.66%, 250=14.78% lat (msec) : 500=0.46%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=2.01%, ctx=4921, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178651: Mon Aug 10 21:52:14 2026 read: IOPS=8, BW=33.5KiB/s (34.3kB/s)(5940KiB/177197msec) clat (msec): min=4, max=1369, avg=46.11, stdev=52.49 lat (msec): min=4, max=1369, avg=46.11, stdev=52.49 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 49], 80.00th=[ 67], 90.00th=[ 101], 95.00th=[ 127], | 99.00th=[ 182], 99.50th=[ 201], 99.90th=[ 531], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 143, per=24.97%, avg=33.70, stdev=24.48, samples=341 iops : min= 1, max= 35, avg= 7.74, stdev= 6.16, samples=341 write: IOPS=8, BW=35.8KiB/s (36.7kB/s)(6348KiB/177197msec); 0 zone resets clat (msec): min=7, max=346, avg=68.39, stdev=47.82 lat (msec): min=7, max=346, avg=68.39, stdev=47.82 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 80], 80.00th=[ 99], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 245], 99.50th=[ 268], 99.90th=[ 338], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 136, per=25.19%, avg=35.52, stdev=21.66, samples=346 iops : min= 1, max= 34, avg= 8.20, stdev= 5.45, samples=346 lat (msec) : 10=2.31%, 20=13.12%, 50=42.12%, 100=27.73%, 250=14.13% lat (msec) : 500=0.52%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.96%, ctx=4894, 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=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=178652: Mon Aug 10 21:52:14 2026 read: IOPS=8, BW=34.3KiB/s (35.1kB/s)(6028KiB/175745msec) clat (msec): min=4, max=300, avg=45.59, stdev=40.09 lat (msec): min=4, max=300, avg=45.59, stdev=40.09 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 104], 95.00th=[ 132], | 99.00th=[ 184], 99.50th=[ 207], 99.90th=[ 292], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 159, per=25.80%, avg=34.82, stdev=24.92, samples=335 iops : min= 1, max= 39, avg= 8.01, stdev= 6.26, samples=335 write: IOPS=8, BW=35.6KiB/s (36.5kB/s)(6260KiB/175745msec); 0 zone resets clat (msec): min=8, max=1363, avg=68.25, stdev=56.53 lat (msec): min=8, max=1363, avg=68.26, stdev=56.53 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 25], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 56], 60.00th=[ 65], | 70.00th=[ 77], 80.00th=[ 97], 90.00th=[ 130], 95.00th=[ 161], | 99.00th=[ 232], 99.50th=[ 271], 99.90th=[ 305], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 135, per=25.26%, avg=35.62, stdev=21.84, samples=340 iops : min= 1, max= 33, avg= 8.22, stdev= 5.51, samples=340 lat (msec) : 10=2.93%, 20=13.02%, 50=41.31%, 100=27.93%, 250=14.29% lat (msec) : 500=0.49%, 2000=0.03% cpu : usr=0.05%, sys=2.04%, ctx=4996, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178653: Mon Aug 10 21:52:14 2026 read: IOPS=8, BW=34.4KiB/s (35.3kB/s)(6052KiB/175685msec) clat (msec): min=3, max=298, avg=46.49, stdev=41.57 lat (msec): min=3, max=298, avg=46.49, stdev=41.57 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 104], 95.00th=[ 138], | 99.00th=[ 197], 99.50th=[ 218], 99.90th=[ 284], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 151, per=26.26%, avg=35.46, stdev=24.29, samples=331 iops : min= 1, max= 37, avg= 8.18, stdev= 6.11, samples=331 write: IOPS=8, BW=35.5KiB/s (36.3kB/s)(6236KiB/175685msec); 0 zone resets clat (msec): min=10, max=1408, avg=67.46, stdev=57.57 lat (msec): min=10, max=1408, avg=67.47, stdev=57.57 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 63], | 70.00th=[ 79], 80.00th=[ 96], 90.00th=[ 131], 95.00th=[ 157], | 99.00th=[ 232], 99.50th=[ 268], 99.90th=[ 527], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 135, per=25.06%, avg=35.33, stdev=22.10, samples=342 iops : min= 1, max= 33, avg= 8.15, stdev= 5.56, samples=342 lat (msec) : 4=0.03%, 10=3.16%, 20=12.27%, 50=42.61%, 100=27.54% lat (msec) : 250=13.80%, 500=0.52%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.92%, ctx=4825, 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=135KiB/s (139kB/s), 33.5KiB/s-34.4KiB/s (34.3kB/s-35.3kB/s), io=23.4MiB (24.6MB), run=175685-177322msec WRITE: bw=142KiB/s (145kB/s), 35.5KiB/s-35.8KiB/s (36.3kB/s-36.7kB/s), io=24.6MiB (25.7MB), run=175685-177322msec 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=178695: Mon Aug 10 21:52:56 2026 read: IOPS=12, BW=194KiB/s (198kB/s)(5920KiB/30589msec) clat (usec): min=39, max=155458, avg=42819.37, stdev=25683.40 lat (usec): min=40, max=155459, avg=42829.91, stdev=25678.43 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 68], 10.00th=[ 16712], 20.00th=[ 22938], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 39060], 60.00th=[ 43254], | 70.00th=[ 52167], 80.00th=[ 60031], 90.00th=[ 73925], 95.00th=[ 93848], | 99.00th=[117965], 99.50th=[152044], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 31, max= 477, per=24.92%, avg=194.12, stdev=78.70, samples=60 iops : min= 1, max= 29, avg=11.30, stdev= 4.93, samples=60 write: IOPS=13, BW=208KiB/s (213kB/s)(6368KiB/30589msec); 0 zone resets clat (usec): min=1498, max=205476, avg=36262.29, stdev=34264.66 lat (usec): min=1500, max=205477, avg=36273.50, stdev=34270.10 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2180], 10.00th=[ 3195], 20.00th=[ 6915], | 30.00th=[ 11600], 40.00th=[ 18220], 50.00th=[ 24773], 60.00th=[ 35390], | 70.00th=[ 49546], 80.00th=[ 61604], 90.00th=[ 84411], 95.00th=[100140], | 99.00th=[158335], 99.50th=[187696], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 21, max= 510, per=25.47%, avg=208.82, stdev=87.10, samples=60 iops : min= 1, max= 31, avg=12.25, stdev= 5.47, samples=60 lat (usec) : 50=0.52%, 100=2.99%, 250=0.13% lat (msec) : 2=1.95%, 4=4.30%, 10=7.03%, 20=11.46%, 50=40.23% lat (msec) : 100=27.08%, 250=4.30% cpu : usr=0.07%, sys=6.13%, ctx=1765, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178696: Mon Aug 10 21:52:56 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(5744KiB/30047msec) clat (usec): min=46, max=190150, avg=44604.45, stdev=31029.52 lat (usec): min=46, max=190152, avg=44624.77, stdev=31035.94 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 67], 10.00th=[ 17171], 20.00th=[ 23200], | 30.00th=[ 28181], 40.00th=[ 32113], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 63177], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[170918], 99.50th=[189793], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 31, max= 411, per=24.58%, avg=191.48, stdev=74.91, samples=58 iops : min= 1, max= 25, avg=11.14, stdev= 4.71, samples=58 write: IOPS=13, BW=218KiB/s (223kB/s)(6544KiB/30047msec); 0 zone resets clat (usec): min=1432, max=214637, avg=33755.55, stdev=35117.28 lat (usec): min=1434, max=214640, avg=33765.02, stdev=35112.47 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2024], 10.00th=[ 3359], 20.00th=[ 5866], | 30.00th=[ 9241], 40.00th=[ 15926], 50.00th=[ 22676], 60.00th=[ 29492], | 70.00th=[ 39060], 80.00th=[ 57410], 90.00th=[ 83362], 95.00th=[108528], | 99.00th=[149947], 99.50th=[173016], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 63, max= 444, per=26.34%, avg=215.95, stdev=89.92, samples=58 iops : min= 3, max= 27, avg=12.69, stdev= 5.70, samples=58 lat (usec) : 50=0.13%, 100=3.26%, 250=0.13%, 500=0.13% lat (msec) : 2=2.47%, 4=3.78%, 10=10.55%, 20=11.07%, 50=39.84% lat (msec) : 100=22.79%, 250=5.86% cpu : usr=0.08%, sys=6.21%, ctx=1659, 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=178698: Mon Aug 10 21:52:56 2026 read: IOPS=12, BW=204KiB/s (209kB/s)(6256KiB/30723msec) clat (usec): min=47, max=214582, avg=44357.78, stdev=29828.27 lat (usec): min=48, max=214584, avg=44359.38, stdev=29828.30 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 73], 10.00th=[ 14484], 20.00th=[ 23200], | 30.00th=[ 27919], 40.00th=[ 33817], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 63177], 90.00th=[ 72877], 95.00th=[100140], | 99.00th=[158335], 99.50th=[170918], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 381, per=26.35%, avg=205.28, stdev=74.61, samples=60 iops : min= 1, max= 23, avg=12.02, stdev= 4.67, samples=60 write: IOPS=12, BW=196KiB/s (201kB/s)(6032KiB/30723msec); 0 zone resets clat (usec): min=1590, max=191339, avg=35172.75, stdev=32888.47 lat (usec): min=1592, max=191342, avg=35190.03, stdev=32889.30 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2245], 10.00th=[ 3490], 20.00th=[ 7308], | 30.00th=[ 12911], 40.00th=[ 19268], 50.00th=[ 26346], 60.00th=[ 34341], | 70.00th=[ 42730], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[101188], | 99.00th=[141558], 99.50th=[177210], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 63, max= 405, per=23.83%, avg=195.42, stdev=78.54, samples=60 iops : min= 3, max= 25, avg=11.40, stdev= 4.96, samples=60 lat (usec) : 50=0.52%, 100=2.60%, 250=0.26%, 750=0.13%, 1000=0.13% lat (msec) : 2=2.21%, 4=3.52%, 10=7.29%, 20=11.46%, 50=41.93% lat (msec) : 100=24.74%, 250=5.21% cpu : usr=0.06%, sys=5.93%, ctx=1744, 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=178699: Mon Aug 10 21:52:56 2026 read: IOPS=12, BW=203KiB/s (208kB/s)(6032KiB/29652msec) clat (usec): min=40, max=260048, avg=44021.81, stdev=30290.34 lat (usec): min=41, max=260050, avg=44066.58, stdev=30285.64 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 22938], | 30.00th=[ 28705], 40.00th=[ 35390], 50.00th=[ 42206], 60.00th=[ 48497], | 70.00th=[ 54789], 80.00th=[ 62653], 90.00th=[ 80217], 95.00th=[ 92799], | 99.00th=[135267], 99.50th=[175113], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 85, max= 380, per=26.07%, avg=203.07, stdev=67.07, samples=58 iops : min= 5, max= 23, avg=11.88, stdev= 4.21, samples=58 write: IOPS=13, BW=211KiB/s (216kB/s)(6256KiB/29652msec); 0 zone resets clat (usec): min=1588, max=201221, avg=32746.23, stdev=32904.58 lat (usec): min=1589, max=201224, avg=32748.46, stdev=32904.58 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2311], 10.00th=[ 3294], 20.00th=[ 6390], | 30.00th=[ 10028], 40.00th=[ 15139], 50.00th=[ 23987], 60.00th=[ 30540], | 70.00th=[ 39584], 80.00th=[ 53740], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[166724], 99.50th=[193987], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 31, max= 573, per=25.88%, avg=212.22, stdev=98.94, samples=58 iops : min= 1, max= 35, avg=12.45, stdev= 6.18, samples=58 lat (usec) : 50=0.65%, 100=4.95%, 250=0.52%, 500=0.26% lat (msec) : 2=1.30%, 4=5.73%, 10=8.33%, 20=10.16%, 50=37.89% lat (msec) : 100=26.17%, 250=3.91%, 500=0.13% cpu : usr=0.09%, sys=6.43%, ctx=1749, 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=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=780KiB/s (798kB/s), 191KiB/s-204KiB/s (196kB/s-209kB/s), io=23.4MiB (24.5MB), run=29652-30723msec WRITE: bw=820KiB/s (840kB/s), 196KiB/s-218KiB/s (201kB/s-223kB/s), io=24.6MiB (25.8MB), run=29652-30723msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178700: Mon Aug 10 21:53:09 2026 read: IOPS=8, BW=136KiB/s (140kB/s)(5920KiB/43382msec) clat (msec): min=6, max=237, avg=44.67, stdev=36.67 lat (msec): min=6, max=237, avg=44.67, stdev=36.67 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 64], 90.00th=[ 100], 95.00th=[ 117], | 99.00th=[ 192], 99.50th=[ 222], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 28, max= 448, per=24.88%, avg=137.35, stdev=75.30, samples=83 iops : min= 1, max= 28, avg= 7.82, stdev= 4.83, samples=83 write: IOPS=9, BW=147KiB/s (150kB/s)(6368KiB/43382msec); 0 zone resets clat (msec): min=14, max=228, avg=66.34, stdev=38.19 lat (msec): min=14, max=228, avg=66.35, stdev=38.19 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 80], 80.00th=[ 96], 90.00th=[ 120], 95.00th=[ 148], | 99.00th=[ 207], 99.50th=[ 228], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 319, per=25.37%, avg=147.14, stdev=69.68, samples=84 iops : min= 1, max= 19, avg= 8.43, stdev= 4.43, samples=84 lat (msec) : 10=0.65%, 20=10.16%, 50=48.31%, 100=27.21%, 250=13.67% cpu : usr=0.06%, sys=2.14%, ctx=1214, 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=178701: Mon Aug 10 21:53:09 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(5744KiB/43256msec) clat (msec): min=7, max=181, avg=43.86, stdev=32.30 lat (msec): min=7, max=181, avg=43.87, stdev=32.30 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 61], 90.00th=[ 91], 95.00th=[ 117], | 99.00th=[ 161], 99.50th=[ 165], 99.90th=[ 182], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 28, max= 384, per=24.79%, avg=136.84, stdev=80.15, samples=82 iops : min= 1, max= 24, avg= 7.77, stdev= 5.15, samples=82 write: IOPS=9, BW=151KiB/s (155kB/s)(6544KiB/43256msec); 0 zone resets clat (msec): min=19, max=248, avg=66.89, stdev=40.48 lat (msec): min=19, max=248, avg=66.89, stdev=40.48 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 62], | 70.00th=[ 73], 80.00th=[ 97], 90.00th=[ 130], 95.00th=[ 155], | 99.00th=[ 194], 99.50th=[ 205], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 347, per=25.87%, avg=150.04, stdev=76.06, samples=85 iops : min= 1, max= 21, avg= 8.62, stdev= 4.83, samples=85 lat (msec) : 10=0.39%, 20=8.46%, 50=48.18%, 100=29.30%, 250=13.67% cpu : usr=0.05%, sys=2.24%, ctx=1232, 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=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=178702: Mon Aug 10 21:53:09 2026 read: IOPS=9, BW=146KiB/s (149kB/s)(6256KiB/42922msec) clat (msec): min=7, max=198, avg=44.69, stdev=35.01 lat (msec): min=7, max=198, avg=44.69, stdev=35.01 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 66], 90.00th=[ 95], 95.00th=[ 124], | 99.00th=[ 178], 99.50th=[ 194], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 416, per=26.82%, avg=148.06, stdev=90.22, samples=83 iops : min= 1, max= 26, avg= 8.49, stdev= 5.73, samples=83 write: IOPS=8, BW=141KiB/s (144kB/s)(6032KiB/42922msec); 0 zone resets clat (msec): min=16, max=255, avg=66.20, stdev=38.23 lat (msec): min=16, max=255, avg=66.20, stdev=38.23 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 65], | 70.00th=[ 75], 80.00th=[ 94], 90.00th=[ 113], 95.00th=[ 144], | 99.00th=[ 205], 99.50th=[ 228], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 28, max= 288, per=23.91%, avg=138.68, stdev=64.43, samples=84 iops : min= 1, max= 18, avg= 7.90, stdev= 4.18, samples=84 lat (msec) : 10=0.52%, 20=11.20%, 50=45.18%, 100=30.86%, 250=12.11% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=2.21%, ctx=1262, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178703: Mon Aug 10 21:53:09 2026 read: IOPS=8, BW=139KiB/s (142kB/s)(6032KiB/43374msec) clat (msec): min=6, max=232, avg=46.64, stdev=39.80 lat (msec): min=6, max=232, avg=46.64, stdev=39.80 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 63], 90.00th=[ 104], 95.00th=[ 140], | 99.00th=[ 197], 99.50th=[ 220], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 349, per=25.45%, avg=140.46, stdev=78.05, samples=83 iops : min= 1, max= 21, avg= 8.01, stdev= 4.97, samples=83 write: IOPS=9, BW=144KiB/s (148kB/s)(6256KiB/43374msec); 0 zone resets clat (msec): min=12, max=229, avg=65.05, stdev=40.01 lat (msec): min=12, max=229, avg=65.06, stdev=40.01 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 51], 60.00th=[ 62], | 70.00th=[ 77], 80.00th=[ 94], 90.00th=[ 116], 95.00th=[ 144], | 99.00th=[ 211], 99.50th=[ 228], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 30, max= 347, per=24.48%, avg=141.98, stdev=75.10, samples=85 iops : min= 1, max= 21, avg= 8.11, stdev= 4.81, samples=85 lat (msec) : 10=0.91%, 20=8.59%, 50=51.17%, 100=25.78%, 250=13.54% cpu : usr=0.06%, sys=2.15%, ctx=1208, 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=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=552KiB/s (565kB/s), 133KiB/s-146KiB/s (136kB/s-149kB/s), io=23.4MiB (24.5MB), run=42922-43382msec WRITE: bw=581KiB/s (595kB/s), 141KiB/s-151KiB/s (144kB/s-155kB/s), io=24.6MiB (25.8MB), run=42922-43382msec 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=178718: Mon Aug 10 21:53:26 2026 read: IOPS=3, BW=3685KiB/s (3774kB/s)(7168KiB/1945msec) clat (usec): min=581, max=335353, avg=187912.23, stdev=104836.53 lat (usec): min=582, max=335355, avg=187913.73, stdev=104836.83 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[132645], | 30.00th=[181404], 40.00th=[181404], 50.00th=[193987], 60.00th=[210764], | 70.00th=[210764], 80.00th=[261096], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2035, max= 4087, per=63.98%, avg=3125.67, stdev=1032.10, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=2, BW=2632KiB/s (2696kB/s)(5120KiB/1945msec); 0 zone resets clat (msec): min=78, max=194, avg=111.63, stdev=47.36 lat (msec): min=78, max=195, avg=111.75, stdev=47.45 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 90], 40.00th=[ 90], 50.00th=[ 92], 60.00th=[ 92], | 70.00th=[ 104], 80.00th=[ 104], 90.00th=[ 194], 95.00th=[ 194], | 99.00th=[ 194], 99.50th=[ 194], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 2035, max= 4087, per=44.76%, avg=3061.00, stdev=1450.98, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (usec) : 750=8.33% lat (msec) : 100=25.00%, 250=50.00%, 500=16.67% cpu : usr=0.15%, sys=21.55%, ctx=215, 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=178720: Mon Aug 10 21:53:26 2026 read: IOPS=0, BW=489KiB/s (500kB/s)(2048KiB/4192msec) clat (msec): min=169, max=232, avg=201.05, stdev=44.10 lat (msec): min=169, max=232, avg=201.05, stdev=44.10 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 232], | 70.00th=[ 232], 80.00th=[ 232], 90.00th=[ 232], 95.00th=[ 232], | 99.00th=[ 232], 99.50th=[ 232], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 1809, max= 2031, per=39.30%, avg=1920.00, stdev=156.98, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2443KiB/s (2501kB/s)(10.0MiB/4192msec); 0 zone resets clat (msec): min=97, max=842, avg=361.62, stdev=262.90 lat (msec): min=97, max=842, avg=361.72, stdev=262.91 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 127], | 30.00th=[ 155], 40.00th=[ 171], 50.00th=[ 222], 60.00th=[ 355], | 70.00th=[ 426], 80.00th=[ 477], 90.00th=[ 751], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 2007, max= 6131, per=53.53%, avg=3660.60, stdev=2238.79, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 2.19, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=13.48%, ctx=166, 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=178722: Mon Aug 10 21:53:26 2026 read: IOPS=1, BW=1757KiB/s (1800kB/s)(6144KiB/3496msec) clat (usec): min=673, max=243359, avg=91728.12, stdev=104575.35 lat (usec): min=674, max=243359, avg=91729.22, stdev=104575.17 clat percentiles (usec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 1598], | 30.00th=[ 1598], 40.00th=[ 1696], 50.00th=[ 1696], 60.00th=[147850], | 70.00th=[154141], 80.00th=[154141], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 4079, max= 6023, per=100.00%, avg=5051.00, stdev=1374.62, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1757KiB/s (1800kB/s)(6144KiB/3496msec); 0 zone resets clat (msec): min=194, max=1358, avg=429.22, stdev=458.31 lat (msec): min=194, max=1358, avg=429.30, stdev=458.30 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 213], 60.00th=[ 255], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 2039, max= 4071, per=49.35%, avg=3375.00, stdev=1157.35, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 2=16.67%, 250=50.00%, 500=16.67%, 2000=8.33% cpu : usr=0.00%, sys=12.27%, ctx=128, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178724: Mon Aug 10 21:53:26 2026 read: IOPS=1, BW=1316KiB/s (1347kB/s)(5120KiB/3892msec) clat (usec): min=493, max=257578, avg=62167.01, stdev=111163.79 lat (usec): min=494, max=257579, avg=62168.03, stdev=111163.45 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[ 494], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 3130], 60.00th=[ 3130], | 70.00th=[ 49021], 80.00th=[ 49021], 90.00th=[256902], 95.00th=[256902], | 99.00th=[256902], 99.50th=[256902], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1842KiB/s (1886kB/s)(7168KiB/3892msec); 0 zone resets clat (msec): min=103, max=1225, avg=498.40, stdev=446.24 lat (msec): min=103, max=1225, avg=498.48, stdev=446.25 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 128], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 305], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 936], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 2035, max= 6095, per=44.63%, avg=3052.00, stdev=2028.67, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 4=8.33%, 50=8.33%, 250=25.00%, 500=16.67%, 750=8.33% lat (msec) : 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=10.36%, ctx=132, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4885KiB/s (5003kB/s), 489KiB/s-3685KiB/s (500kB/s-3774kB/s), io=20.0MiB (20.0MB), run=1945-4192msec WRITE: bw=6840KiB/s (7004kB/s), 1757KiB/s-2632KiB/s (1800kB/s-2696kB/s), io=28.0MiB (29.4MB), run=1945-4192msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178719: Mon Aug 10 21:53:26 2026 read: IOPS=1, BW=1684KiB/s (1725kB/s)(7168KiB/4256msec) clat (msec): min=43, max=1206, avg=335.84, stdev=391.58 lat (msec): min=43, max=1206, avg=335.85, stdev=391.58 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 142], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 232], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 266], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1992, max= 4071, per=50.63%, avg=2436.20, stdev=914.14, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1203KiB/s (1232kB/s)(5120KiB/4256msec); 0 zone resets clat (msec): min=52, max=732, avg=299.40, stdev=280.08 lat (msec): min=52, max=732, avg=299.50, stdev=280.10 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 53], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 167], 60.00th=[ 167], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1992, max= 6131, per=60.30%, avg=4061.50, stdev=2926.71, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 50=8.33%, 100=8.33%, 250=50.00%, 500=16.67%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=3.69%, ctx=75, 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=178721: Mon Aug 10 21:53:26 2026 read: IOPS=0, BW=502KiB/s (514kB/s)(2048KiB/4082msec) clat (msec): min=158, max=206, avg=182.38, stdev=34.30 lat (msec): min=158, max=206, avg=182.38, stdev=34.30 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 207], | 70.00th=[ 207], 80.00th=[ 207], 90.00th=[ 207], 95.00th=[ 207], | 99.00th=[ 207], 99.50th=[ 207], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 1597, max= 1992, per=37.29%, avg=1794.50, stdev=279.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2509KiB/s (2569kB/s)(10.0MiB/4082msec); 0 zone resets clat (msec): min=124, max=759, avg=366.93, stdev=233.24 lat (msec): min=124, max=759, avg=367.04, stdev=233.25 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 171], 50.00th=[ 355], 60.00th=[ 388], | 70.00th=[ 414], 80.00th=[ 460], 90.00th=[ 718], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1992, max= 4096, per=42.20%, avg=2842.60, stdev=1132.91, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.07%, sys=5.71%, ctx=102, 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=178723: Mon Aug 10 21:53:26 2026 read: IOPS=1, BW=1888KiB/s (1933kB/s)(6144KiB/3255msec) clat (msec): min=64, max=506, avg=296.34, stdev=153.62 lat (msec): min=64, max=506, avg=296.34, stdev=153.62 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 284], | 70.00th=[ 422], 80.00th=[ 422], 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= 2035, max= 4071, per=70.39%, avg=3387.00, stdev=1170.89, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1888KiB/s (1933kB/s)(6144KiB/3255msec); 0 zone resets clat (msec): min=79, max=456, avg=230.01, stdev=135.49 lat (msec): min=79, max=457, avg=230.71, stdev=135.59 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 110], | 30.00th=[ 110], 40.00th=[ 220], 50.00th=[ 220], 60.00th=[ 232], | 70.00th=[ 284], 80.00th=[ 284], 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= 1735, max= 4055, per=35.17%, avg=2368.80, stdev=950.68, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=4.03%, ctx=59, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178725: Mon Aug 10 21:53:26 2026 read: IOPS=1, BW=1345KiB/s (1378kB/s)(5120KiB/3806msec) clat (msec): min=81, max=514, avg=257.08, stdev=172.62 lat (msec): min=81, max=514, avg=257.09, stdev=172.62 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 83], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 3984, max= 4055, per=83.53%, avg=4019.50, stdev=50.20, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1883KiB/s (1929kB/s)(7168KiB/3806msec); 0 zone resets clat (msec): min=108, max=828, avg=343.68, stdev=251.01 lat (msec): min=108, max=828, avg=343.79, stdev=251.00 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 125], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 300], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 460], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 2027, max= 6144, per=52.99%, avg=3569.25, stdev=1967.53, samples=4 iops : min= 1, max= 6, avg= 2.75, stdev= 2.36, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.13%, sys=5.17%, ctx=79, 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=4812KiB/s (4928kB/s), 502KiB/s-1888KiB/s (514kB/s-1933kB/s), io=20.0MiB (20.0MB), run=3255-4256msec WRITE: bw=6737KiB/s (6899kB/s), 1203KiB/s-2509KiB/s (1232kB/s-2569kB/s), io=28.0MiB (29.4MB), run=3255-4256msec 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=178731: Mon Aug 10 21:53:40 2026 read: IOPS=1, BW=5080KiB/s (5202kB/s)(12.0MiB/2419msec) clat (msec): min=191, max=1396, avg=753.36, stdev=606.67 lat (msec): min=191, max=1396, avg=753.36, stdev=606.67 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.01%, ctx=40, 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=178733: Mon Aug 10 21:53:40 2026 read: IOPS=0, BW=3213KiB/s (3290kB/s)(4096KiB/1275msec) clat (nsec): min=345507k, max=345507k, avg=345506605.00, stdev= 0.00 lat (nsec): min=345509k, max=345509k, avg=345509125.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 347], 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= 6330, max= 6330, per=93.46%, avg=6330.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=6425KiB/s (6579kB/s)(8192KiB/1275msec); 0 zone resets clat (msec): min=278, max=507, avg=392.71, stdev=161.68 lat (msec): min=278, max=507, avg=393.13, stdev=161.66 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 279], 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= 8175, max= 8175, per=56.04%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=8.01%, ctx=41, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178734: Mon Aug 10 21:53:40 2026 write: IOPS=1, BW=5471KiB/s (5602kB/s)(12.0MiB/2246msec); 0 zone resets clat (msec): min=475, max=867, avg=697.90, stdev=201.23 lat (msec): min=475, max=869, avg=698.65, stdev=201.73 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8110, max= 8175, per=55.81%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=4.19%, ctx=43, 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=178735: Mon Aug 10 21:53:40 2026 write: IOPS=1, BW=6350KiB/s (6503kB/s)(12.0MiB/1935msec); 0 zone resets clat (msec): min=304, max=1246, avg=623.76, stdev=539.76 lat (msec): min=307, max=1247, avg=624.75, stdev=539.19 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 321], | 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= 7173, max= 8175, per=52.60%, avg=7674.00, stdev=708.52, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.36%, ctx=44, 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=6773KiB/s (6936kB/s), 3213KiB/s-5080KiB/s (3290kB/s-5202kB/s), io=16.0MiB (16.8MB), run=1275-2419msec WRITE: bw=14.2MiB/s (14.9MB/s), 5471KiB/s-6425KiB/s (5602kB/s-6579kB/s), io=32.0MiB (33.6MB), run=1275-2246msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178736: Mon Aug 10 21:53:41 2026 read: IOPS=1, BW=5758KiB/s (5896kB/s)(12.0MiB/2134msec) clat (msec): min=563, max=914, avg=709.99, stdev=182.55 lat (msec): min=563, max=914, avg=709.99, stdev=182.55 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 6253, max= 7861, per=100.00%, avg=7057.00, stdev=1137.03, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=14.11%, ctx=353, 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=178737: Mon Aug 10 21:53:41 2026 read: IOPS=0, BW=1572KiB/s (1610kB/s)(4096KiB/2605msec) clat (nsec): min=799515k, max=799515k, avg=799514543.00, stdev= 0.00 lat (nsec): min=799517k, max=799517k, avg=799516942.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7937, max= 7937, per=100.00%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3145KiB/s (3220kB/s)(8192KiB/2605msec); 0 zone resets clat (msec): min=521, max=1278, avg=900.30, stdev=535.29 lat (msec): min=522, max=1279, avg=900.60, stdev=535.30 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7861, max= 7861, per=66.98%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.18%, ctx=216, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178738: Mon Aug 10 21:53:41 2026 write: IOPS=1, BW=4401KiB/s (4507kB/s)(12.0MiB/2792msec); 0 zone resets clat (msec): min=175, max=1491, avg=926.44, stdev=677.45 lat (msec): min=175, max=1498, avg=928.86, stdev=679.99 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 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= 7861, max= 8159, per=68.25%, avg=8010.00, stdev=210.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.47%, ctx=39, 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=178739: Mon Aug 10 21:53:41 2026 write: IOPS=1, BW=4733KiB/s (4847kB/s)(12.0MiB/2596msec); 0 zone resets clat (msec): min=427, max=1489, avg=863.64, stdev=555.50 lat (msec): min=428, max=1489, avg=864.27, stdev=555.07 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 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= 7937, max= 8159, per=68.58%, avg=8048.00, stdev=156.98, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.15%, sys=3.78%, ctx=70, 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=6289KiB/s (6440kB/s), 1572KiB/s-5758KiB/s (1610kB/s-5896kB/s), io=16.0MiB (16.8MB), run=2134-2605msec WRITE: bw=11.5MiB/s (12.0MB/s), 3145KiB/s-4733KiB/s (3220kB/s-4847kB/s), io=32.0MiB (33.6MB), run=2596-2792msec