== sanity test 398b: DIO and buffer IO race ============== 22:47:14 (1787712434) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.99609 s, 8.4 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=178932: Tue Aug 25 22:49:17 2026 read: IOPS=14, BW=58.6KiB/s (60.0kB/s)(5992KiB/102213msec) clat (usec): min=34, max=714681, avg=37219.98, stdev=28253.57 lat (usec): min=34, max=714683, avg=37224.61, stdev=28253.45 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 10159], 10.00th=[ 14615], 20.00th=[ 19792], | 30.00th=[ 23987], 40.00th=[ 27919], 50.00th=[ 32113], 60.00th=[ 38011], | 70.00th=[ 44303], 80.00th=[ 52167], 90.00th=[ 65274], 95.00th=[ 79168], | 99.00th=[104334], 99.50th=[120062], 99.90th=[179307], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 23, max= 119, per=25.50%, avg=58.39, stdev=19.48, samples=201 iops : min= 5, max= 29, avg=13.94, stdev= 4.89, samples=201 write: IOPS=15, BW=61.6KiB/s (63.1kB/s)(6296KiB/102213msec); 0 zone resets clat (usec): min=892, max=165386, avg=29417.53, stdev=28121.48 lat (usec): min=893, max=165388, avg=29419.52, stdev=28121.33 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1516], 10.00th=[ 2147], 20.00th=[ 4113], | 30.00th=[ 7570], 40.00th=[ 15270], 50.00th=[ 22414], 60.00th=[ 28967], | 70.00th=[ 37487], 80.00th=[ 50070], 90.00th=[ 70779], 95.00th=[ 86508], | 99.00th=[117965], 99.50th=[132645], 99.90th=[149947], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 15, max= 128, per=25.66%, avg=61.34, stdev=22.13, samples=201 iops : min= 3, max= 32, avg=14.69, stdev= 5.59, samples=201 lat (usec) : 50=0.16%, 100=1.24%, 250=0.29%, 500=0.20%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=4.46%, 4=5.60%, 10=7.78%, 20=13.77%, 50=45.44% lat (msec) : 100=19.01%, 250=1.92%, 750=0.03% cpu : usr=0.09%, sys=6.40%, ctx=7036, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178933: Tue Aug 25 22:49:17 2026 read: IOPS=14, BW=56.9KiB/s (58.2kB/s)(5940KiB/104427msec) clat (usec): min=43, max=802812, avg=38189.06, stdev=30408.68 lat (usec): min=45, max=802813, avg=38191.94, stdev=30408.30 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 11469], 10.00th=[ 15795], 20.00th=[ 20055], | 30.00th=[ 23987], 40.00th=[ 27919], 50.00th=[ 33162], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 66323], 95.00th=[ 78119], | 99.00th=[117965], 99.50th=[139461], 99.90th=[217056], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 112, per=24.73%, avg=56.62, stdev=19.76, samples=206 iops : min= 1, max= 28, avg=13.50, stdev= 4.99, samples=206 write: IOPS=15, BW=60.8KiB/s (62.2kB/s)(6348KiB/104427msec); 0 zone resets clat (usec): min=1001, max=223852, avg=29956.04, stdev=30008.94 lat (usec): min=1002, max=223854, avg=29970.26, stdev=30000.72 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1483], 10.00th=[ 2089], 20.00th=[ 4015], | 30.00th=[ 6783], 40.00th=[ 15270], 50.00th=[ 22152], 60.00th=[ 29754], | 70.00th=[ 39060], 80.00th=[ 51119], 90.00th=[ 68682], 95.00th=[ 88605], | 99.00th=[137364], 99.50th=[149947], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 7, max= 164, per=25.34%, avg=60.56, stdev=25.49, samples=206 iops : min= 1, max= 41, avg=14.49, stdev= 6.42, samples=206 lat (usec) : 50=0.16%, 100=0.88%, 250=0.20%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.75%, 4=5.53%, 10=8.37%, 20=13.41%, 50=44.50% lat (msec) : 100=19.47%, 250=2.60%, 1000=0.03% cpu : usr=0.09%, sys=6.45%, ctx=7180, 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=178934: Tue Aug 25 22:49:17 2026 read: IOPS=14, BW=57.9KiB/s (59.3kB/s)(6028KiB/104024msec) clat (usec): min=28, max=232448, avg=37633.65, stdev=24296.76 lat (usec): min=28, max=232450, avg=37636.46, stdev=24301.06 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 11076], 10.00th=[ 14877], 20.00th=[ 19792], | 30.00th=[ 23725], 40.00th=[ 27919], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 68682], 95.00th=[ 82314], | 99.00th=[120062], 99.50th=[141558], 99.90th=[221250], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 7, max= 112, per=25.30%, avg=57.94, stdev=19.68, samples=204 iops : min= 1, max= 28, avg=13.83, stdev= 4.96, samples=204 write: IOPS=15, BW=60.2KiB/s (61.6kB/s)(6260KiB/104024msec); 0 zone resets clat (usec): min=975, max=848700, avg=30147.65, stdev=35622.65 lat (usec): min=975, max=848702, avg=30149.89, stdev=35622.68 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1516], 10.00th=[ 2212], 20.00th=[ 4047], | 30.00th=[ 7046], 40.00th=[ 14615], 50.00th=[ 22676], 60.00th=[ 30016], | 70.00th=[ 38011], 80.00th=[ 51119], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[119014], 99.50th=[160433], 99.90th=[202376], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 7, max= 119, per=25.04%, avg=59.84, stdev=22.20, samples=205 iops : min= 1, max= 29, avg=14.31, stdev= 5.56, samples=205 lat (usec) : 50=0.16%, 100=1.40%, 250=0.36%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.26%, 4=5.86%, 10=7.71%, 20=14.00%, 50=44.08% lat (msec) : 100=19.66%, 250=2.34%, 1000=0.03% cpu : usr=0.07%, sys=6.42%, ctx=7125, 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=178935: Tue Aug 25 22:49:17 2026 read: IOPS=14, BW=57.8KiB/s (59.2kB/s)(6052KiB/104755msec) clat (usec): min=38, max=270449, avg=37658.14, stdev=25351.31 lat (usec): min=39, max=270450, avg=37665.75, stdev=25357.74 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 6915], 10.00th=[ 14746], 20.00th=[ 19268], | 30.00th=[ 23725], 40.00th=[ 27919], 50.00th=[ 32375], 60.00th=[ 38011], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 66847], 95.00th=[ 81265], | 99.00th=[119014], 99.50th=[149947], 99.90th=[252707], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 102, per=25.09%, avg=57.45, stdev=18.60, samples=206 iops : min= 1, max= 25, avg=13.70, stdev= 4.67, samples=206 write: IOPS=14, BW=59.5KiB/s (60.0kB/s)(6236KiB/104755msec); 0 zone resets clat (usec): min=940, max=823068, avg=30541.22, stdev=35707.60 lat (usec): min=942, max=823071, avg=30545.43, stdev=35707.30 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1516], 10.00th=[ 2073], 20.00th=[ 3556], | 30.00th=[ 6652], 40.00th=[ 13960], 50.00th=[ 22938], 60.00th=[ 30802], | 70.00th=[ 39584], 80.00th=[ 53740], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[128451], 99.50th=[147850], 99.90th=[202376], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 119, per=24.75%, avg=59.15, stdev=22.30, samples=206 iops : min= 1, max= 29, avg=14.13, stdev= 5.60, samples=206 lat (usec) : 50=0.23%, 100=1.66%, 250=0.36%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=4.65%, 4=6.35%, 10=8.11%, 20=12.57%, 50=43.42% lat (msec) : 100=19.73%, 250=2.64%, 500=0.07%, 1000=0.03% cpu : usr=0.10%, sys=6.21%, ctx=6990, 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=229KiB/s (235kB/s), 56.9KiB/s-58.6KiB/s (58.2kB/s-60.0kB/s), io=23.4MiB (24.6MB), run=102213-104755msec WRITE: bw=240KiB/s (246kB/s), 59.5KiB/s-61.6KiB/s (60.0kB/s-63.1kB/s), io=24.6MiB (25.7MB), run=102213-104755msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178927: Tue Aug 25 22:49:55 2026 read: IOPS=10, BW=41.9KiB/s (42.9kB/s)(5992KiB/142948msec) clat (msec): min=5, max=807, avg=38.72, stdev=39.42 lat (msec): min=5, max=807, avg=38.72, stdev=39.42 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 82], 95.00th=[ 110], | 99.00th=[ 182], 99.50th=[ 213], 99.90th=[ 296], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 143, per=25.14%, avg=41.98, stdev=26.36, samples=278 iops : min= 1, max= 35, avg= 9.86, stdev= 6.66, samples=278 write: IOPS=11, BW=44.0KiB/s (45.1kB/s)(6296KiB/142948msec); 0 zone resets clat (msec): min=10, max=299, avg=53.73, stdev=35.11 lat (msec): min=10, max=299, avg=53.73, stdev=35.11 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 52], | 70.00th=[ 63], 80.00th=[ 77], 90.00th=[ 101], 95.00th=[ 125], | 99.00th=[ 186], 99.50th=[ 209], 99.90th=[ 251], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 135, per=24.98%, avg=43.71, stdev=24.79, samples=281 iops : min= 1, max= 33, avg=10.29, stdev= 6.23, samples=281 lat (msec) : 10=2.54%, 20=17.25%, 50=48.21%, 100=23.93%, 250=7.91% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=2.25%, ctx=4897, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178928: Tue Aug 25 22:49:55 2026 read: IOPS=10, BW=41.7KiB/s (42.7kB/s)(5940KiB/142396msec) clat (msec): min=5, max=905, avg=36.64, stdev=37.89 lat (msec): min=5, max=905, avg=36.64, stdev=37.89 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 75], 95.00th=[ 95], | 99.00th=[ 169], 99.50th=[ 209], 99.90th=[ 241], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 151, per=25.20%, avg=42.08, stdev=26.98, samples=276 iops : min= 1, max= 37, avg= 9.88, stdev= 6.81, samples=276 write: IOPS=11, BW=44.6KiB/s (45.6kB/s)(6348KiB/142396msec); 0 zone resets clat (msec): min=9, max=338, avg=55.19, stdev=37.41 lat (msec): min=9, max=338, avg=55.19, stdev=37.42 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 81], 90.00th=[ 103], 95.00th=[ 129], | 99.00th=[ 188], 99.50th=[ 220], 99.90th=[ 288], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 7, max= 135, per=25.30%, avg=44.28, stdev=24.69, samples=280 iops : min= 1, max= 33, avg=10.43, stdev= 6.22, samples=280 lat (msec) : 10=2.31%, 20=17.29%, 50=49.02%, 100=23.73%, 250=7.52% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=2.29%, ctx=4985, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178929: Tue Aug 25 22:49:55 2026 read: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6028KiB/142927msec) clat (msec): min=4, max=293, avg=37.69, stdev=31.57 lat (msec): min=4, max=293, avg=37.69, stdev=31.57 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 83], 95.00th=[ 102], | 99.00th=[ 150], 99.50th=[ 176], 99.90th=[ 245], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 174, per=25.16%, avg=42.01, stdev=26.08, samples=280 iops : min= 1, max= 43, avg= 9.87, stdev= 6.56, samples=280 write: IOPS=10, BW=43.8KiB/s (44.8kB/s)(6260KiB/142927msec); 0 zone resets clat (msec): min=9, max=908, avg=54.78, stdev=41.33 lat (msec): min=9, max=908, avg=54.79, stdev=41.33 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 64], 80.00th=[ 79], 90.00th=[ 100], 95.00th=[ 125], | 99.00th=[ 192], 99.50th=[ 222], 99.90th=[ 257], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 151, per=24.83%, avg=43.46, stdev=25.57, samples=281 iops : min= 1, max= 37, avg=10.23, stdev= 6.44, samples=281 lat (msec) : 10=2.47%, 20=17.15%, 50=47.82%, 100=24.80%, 250=7.65% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=2.32%, ctx=4974, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178930: Tue Aug 25 22:49:55 2026 read: IOPS=10, BW=42.7KiB/s (43.8kB/s)(6052KiB/141604msec) clat (msec): min=5, max=233, avg=36.96, stdev=31.23 lat (msec): min=5, max=233, avg=36.96, stdev=31.23 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 81], 95.00th=[ 103], | 99.00th=[ 150], 99.50th=[ 176], 99.90th=[ 226], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 7, max= 160, per=25.82%, avg=43.12, stdev=27.15, samples=275 iops : min= 1, max= 40, avg=10.15, stdev= 6.83, samples=275 write: IOPS=11, BW=44.0KiB/s (45.1kB/s)(6236KiB/141604msec); 0 zone resets clat (msec): min=10, max=911, avg=54.72, stdev=41.45 lat (msec): min=10, max=911, avg=54.72, stdev=41.45 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 64], 80.00th=[ 80], 90.00th=[ 102], 95.00th=[ 123], | 99.00th=[ 180], 99.50th=[ 224], 99.90th=[ 334], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 120, per=25.03%, avg=43.80, stdev=24.78, samples=279 iops : min= 1, max= 30, avg=10.32, stdev= 6.24, samples=279 lat (msec) : 10=3.45%, 20=16.99%, 50=47.66%, 100=23.99%, 250=7.81% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=2.32%, ctx=4760, 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=168KiB/s (172kB/s), 41.7KiB/s-42.7KiB/s (42.7kB/s-43.8kB/s), io=23.4MiB (24.6MB), run=141604-142948msec WRITE: bw=176KiB/s (180kB/s), 43.8KiB/s-44.6KiB/s (44.8kB/s-45.6kB/s), io=24.6MiB (25.7MB), run=141604-142948msec 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=178979: Tue Aug 25 22:50:34 2026 read: IOPS=12, BW=206KiB/s (211kB/s)(5920KiB/28765msec) clat (usec): min=51, max=196355, avg=43202.20, stdev=28080.25 lat (usec): min=52, max=196356, avg=43203.55, stdev=28080.28 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 88], 10.00th=[ 15139], 20.00th=[ 22938], | 30.00th=[ 28181], 40.00th=[ 32900], 50.00th=[ 37487], 60.00th=[ 44827], | 70.00th=[ 52167], 80.00th=[ 60031], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[135267], 99.50th=[173016], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 62, max= 352, per=25.91%, avg=207.00, stdev=69.69, samples=56 iops : min= 3, max= 22, avg=12.14, stdev= 4.42, samples=56 write: IOPS=13, BW=221KiB/s (227kB/s)(6368KiB/28765msec); 0 zone resets clat (usec): min=1641, max=222199, avg=32002.38, stdev=30616.05 lat (usec): min=1643, max=222201, avg=32013.92, stdev=30612.57 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2540], 10.00th=[ 3949], 20.00th=[ 6718], | 30.00th=[ 10552], 40.00th=[ 17171], 50.00th=[ 23725], 60.00th=[ 30016], | 70.00th=[ 40633], 80.00th=[ 53216], 90.00th=[ 74974], 95.00th=[ 88605], | 99.00th=[143655], 99.50th=[166724], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 31, max= 412, per=26.47%, avg=222.32, stdev=81.42, samples=56 iops : min= 1, max= 25, avg=13.12, stdev= 5.12, samples=56 lat (usec) : 100=2.73%, 250=0.39%, 500=0.26% lat (msec) : 2=1.95%, 4=3.78%, 10=10.03%, 20=10.68%, 50=43.10% lat (msec) : 100=23.44%, 250=3.65% cpu : usr=0.09%, sys=6.25%, ctx=1783, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178980: Tue Aug 25 22:50:34 2026 read: IOPS=12, BW=192KiB/s (197kB/s)(5744KiB/29885msec) clat (usec): min=53, max=188530, avg=44384.37, stdev=26851.76 lat (usec): min=54, max=188531, avg=44385.87, stdev=26851.73 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 81], 10.00th=[ 17695], 20.00th=[ 25560], | 30.00th=[ 31327], 40.00th=[ 35914], 50.00th=[ 40109], 60.00th=[ 47449], | 70.00th=[ 53740], 80.00th=[ 62129], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[127402], 99.50th=[183501], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 47, max= 349, per=23.83%, avg=190.40, stdev=70.65, samples=58 iops : min= 2, max= 21, avg=11.10, stdev= 4.46, samples=58 write: IOPS=13, BW=219KiB/s (224kB/s)(6544KiB/29885msec); 0 zone resets clat (usec): min=1623, max=232306, avg=33914.37, stdev=32381.07 lat (usec): min=1625, max=232307, avg=33924.86, stdev=32378.14 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2900], 10.00th=[ 3589], 20.00th=[ 6325], | 30.00th=[ 10814], 40.00th=[ 16319], 50.00th=[ 23987], 60.00th=[ 33817], | 70.00th=[ 44827], 80.00th=[ 58459], 90.00th=[ 78119], 95.00th=[ 96994], | 99.00th=[139461], 99.50th=[152044], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 62, max= 414, per=25.61%, avg=215.09, stdev=88.40, samples=58 iops : min= 3, max= 25, avg=12.67, stdev= 5.55, samples=58 lat (usec) : 100=3.12%, 250=0.39%, 500=0.13% lat (msec) : 2=0.78%, 4=5.08%, 10=9.51%, 20=10.68%, 50=40.36% lat (msec) : 100=25.78%, 250=4.17% cpu : usr=0.11%, sys=6.25%, ctx=1822, 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=178981: Tue Aug 25 22:50:34 2026 read: IOPS=13, BW=209KiB/s (214kB/s)(6256KiB/29974msec) clat (usec): min=36, max=178368, avg=44418.67, stdev=27916.46 lat (usec): min=37, max=178369, avg=44421.23, stdev=27916.39 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 78], 10.00th=[ 13435], 20.00th=[ 24249], | 30.00th=[ 29492], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 46400], | 70.00th=[ 55313], 80.00th=[ 65274], 90.00th=[ 78119], 95.00th=[ 87557], | 99.00th=[145753], 99.50th=[156238], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 63, max= 349, per=25.76%, avg=205.84, stdev=59.51, samples=58 iops : min= 3, max= 21, avg=12.09, stdev= 3.75, samples=58 write: IOPS=12, BW=201KiB/s (206kB/s)(6032KiB/29974msec); 0 zone resets clat (usec): min=1730, max=167668, avg=33366.76, stdev=30427.35 lat (usec): min=1734, max=167670, avg=33376.67, stdev=30432.14 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2409], 10.00th=[ 3294], 20.00th=[ 6325], | 30.00th=[ 8979], 40.00th=[ 16909], 50.00th=[ 24249], 60.00th=[ 33817], | 70.00th=[ 45351], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[120062], 99.50th=[133694], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 62, max= 414, per=23.05%, avg=193.62, stdev=79.32, samples=58 iops : min= 3, max= 25, avg=11.33, stdev= 4.99, samples=58 lat (usec) : 50=0.13%, 100=3.39%, 250=0.78%, 750=0.26% lat (msec) : 2=0.91%, 4=5.73%, 10=9.51%, 20=8.59%, 50=39.45% lat (msec) : 100=27.86%, 250=3.39% cpu : usr=0.07%, sys=6.16%, ctx=1896, 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=178982: Tue Aug 25 22:50:34 2026 read: IOPS=13, BW=211KiB/s (216kB/s)(6032KiB/28601msec) clat (usec): min=43, max=157606, avg=39893.38, stdev=25151.64 lat (usec): min=43, max=157606, avg=39895.71, stdev=25151.92 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 75], 10.00th=[ 169], 20.00th=[ 21627], | 30.00th=[ 26870], 40.00th=[ 31851], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 49546], 80.00th=[ 58459], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[108528], 99.50th=[128451], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 62, max= 382, per=26.28%, avg=210.00, stdev=75.26, samples=56 iops : min= 3, max= 23, avg=12.36, stdev= 4.76, samples=56 write: IOPS=13, BW=219KiB/s (224kB/s)(6256KiB/28601msec); 0 zone resets clat (usec): min=1404, max=182914, avg=34591.27, stdev=31817.71 lat (usec): min=1406, max=182917, avg=34598.34, stdev=31826.06 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2769], 10.00th=[ 3916], 20.00th=[ 6128], | 30.00th=[ 9765], 40.00th=[ 18744], 50.00th=[ 26084], 60.00th=[ 34866], | 70.00th=[ 45876], 80.00th=[ 60031], 90.00th=[ 80217], 95.00th=[ 92799], | 99.00th=[156238], 99.50th=[181404], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 93, max= 446, per=26.14%, avg=219.55, stdev=83.05, samples=56 iops : min= 5, max= 27, avg=12.96, stdev= 5.24, samples=56 lat (usec) : 50=0.39%, 100=3.65%, 250=1.04%, 750=0.13% lat (msec) : 2=1.43%, 4=4.82%, 10=9.77%, 20=8.33%, 50=41.93% lat (msec) : 100=26.43%, 250=2.08% cpu : usr=0.06%, sys=6.39%, ctx=1798, 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=799KiB/s (818kB/s), 192KiB/s-211KiB/s (197kB/s-216kB/s), io=23.4MiB (24.5MB), run=28601-29974msec WRITE: bw=841KiB/s (861kB/s), 201KiB/s-221KiB/s (206kB/s-227kB/s), io=24.6MiB (25.8MB), run=28601-29974msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178974: Tue Aug 25 22:50:45 2026 read: IOPS=9, BW=146KiB/s (149kB/s)(5920KiB/40679msec) clat (msec): min=8, max=234, avg=43.86, stdev=35.46 lat (msec): min=8, max=234, avg=43.88, stdev=35.46 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 90], 95.00th=[ 115], | 99.00th=[ 186], 99.50th=[ 209], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 440, per=24.93%, avg=145.62, stdev=87.17, samples=79 iops : min= 1, max= 27, avg= 8.32, stdev= 5.53, samples=79 write: IOPS=9, BW=157KiB/s (160kB/s)(6368KiB/40679msec); 0 zone resets clat (msec): min=13, max=204, avg=61.15, stdev=37.77 lat (msec): min=13, max=204, avg=61.15, stdev=37.78 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 74], 80.00th=[ 91], 90.00th=[ 115], 95.00th=[ 136], | 99.00th=[ 182], 99.50th=[ 188], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 31, max= 382, per=25.36%, avg=155.72, stdev=89.39, samples=80 iops : min= 1, max= 23, avg= 8.95, stdev= 5.58, samples=80 lat (msec) : 10=0.65%, 20=12.63%, 50=48.31%, 100=26.30%, 250=12.11% cpu : usr=0.06%, sys=1.87%, ctx=1226, 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=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=178975: Tue Aug 25 22:50:45 2026 read: IOPS=8, BW=141KiB/s (144kB/s)(5744KiB/40873msec) clat (msec): min=6, max=235, avg=42.27, stdev=33.95 lat (msec): min=6, max=235, avg=42.27, stdev=33.95 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 45], 80.00th=[ 56], 90.00th=[ 89], 95.00th=[ 118], | 99.00th=[ 180], 99.50th=[ 226], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 30, max= 379, per=24.42%, avg=142.60, stdev=85.63, samples=78 iops : min= 1, max= 23, avg= 8.13, stdev= 5.42, samples=78 write: IOPS=10, BW=160KiB/s (164kB/s)(6544KiB/40873msec); 0 zone resets clat (msec): min=14, max=260, avg=62.66, stdev=42.88 lat (msec): min=14, max=260, avg=62.67, stdev=42.87 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 97], 90.00th=[ 126], 95.00th=[ 155], | 99.00th=[ 194], 99.50th=[ 226], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 479, per=25.61%, avg=157.24, stdev=89.63, samples=80 iops : min= 1, max= 29, avg= 9.05, stdev= 5.60, samples=80 lat (msec) : 10=1.04%, 20=10.94%, 50=52.99%, 100=22.01%, 250=12.89% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.98%, ctx=1277, 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=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=178976: Tue Aug 25 22:50:45 2026 read: IOPS=9, BW=156KiB/s (159kB/s)(6256KiB/40225msec) clat (msec): min=7, max=202, avg=41.94, stdev=33.93 lat (msec): min=7, max=202, avg=41.94, stdev=33.93 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 57], 90.00th=[ 89], 95.00th=[ 115], | 99.00th=[ 171], 99.50th=[ 188], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 30, max= 440, per=27.07%, avg=158.10, stdev=94.70, samples=78 iops : min= 1, max= 27, avg= 9.10, stdev= 5.95, samples=78 write: IOPS=9, BW=150KiB/s (154kB/s)(6032KiB/40225msec); 0 zone resets clat (msec): min=14, max=265, avg=62.82, stdev=38.45 lat (msec): min=14, max=265, avg=62.83, stdev=38.45 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 60], | 70.00th=[ 72], 80.00th=[ 91], 90.00th=[ 117], 95.00th=[ 146], | 99.00th=[ 171], 99.50th=[ 199], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 31, max= 407, per=24.39%, avg=149.73, stdev=81.86, samples=78 iops : min= 1, max= 25, avg= 8.58, stdev= 5.18, samples=78 lat (msec) : 10=0.91%, 20=13.93%, 50=48.18%, 100=24.87%, 250=11.98% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.01%, ctx=1192, 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=178977: Tue Aug 25 22:50:45 2026 read: IOPS=9, BW=147KiB/s (151kB/s)(6032KiB/40980msec) clat (msec): min=6, max=208, avg=43.42, stdev=35.33 lat (msec): min=6, max=208, avg=43.43, stdev=35.32 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 67], 90.00th=[ 97], 95.00th=[ 120], | 99.00th=[ 182], 99.50th=[ 184], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 31, max= 438, per=25.32%, avg=147.85, stdev=93.13, samples=80 iops : min= 1, max= 27, avg= 8.45, stdev= 5.85, samples=80 write: IOPS=9, BW=153KiB/s (156kB/s)(6256KiB/40980msec); 0 zone resets clat (msec): min=9, max=199, avg=62.61, stdev=39.72 lat (msec): min=9, max=199, avg=62.61, stdev=39.72 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 51], 60.00th=[ 58], | 70.00th=[ 72], 80.00th=[ 92], 90.00th=[ 129], 95.00th=[ 150], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 413, per=24.86%, avg=152.65, stdev=91.84, samples=81 iops : min= 1, max= 25, avg= 8.75, stdev= 5.76, samples=81 lat (msec) : 10=0.78%, 20=13.54%, 50=46.74%, 100=25.91%, 250=13.02% cpu : usr=0.05%, sys=2.08%, ctx=1220, 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=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=584KiB/s (599kB/s), 141KiB/s-156KiB/s (144kB/s-159kB/s), io=23.4MiB (24.5MB), run=40225-40980msec WRITE: bw=615KiB/s (630kB/s), 150KiB/s-160KiB/s (154kB/s-164kB/s), io=24.6MiB (25.8MB), run=40225-40980msec 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=178996: Tue Aug 25 22:51:01 2026 read: IOPS=1, BW=1272KiB/s (1303kB/s)(7168KiB/5634msec) clat (msec): min=175, max=2548, avg=567.51, stdev=875.58 lat (msec): min=175, max=2548, avg=567.52, stdev=875.58 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 182], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 239], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 363], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 1868, max= 4071, per=89.56%, avg=2704.75, stdev=1016.73, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=909KiB/s (931kB/s)(5120KiB/5634msec); 0 zone resets clat (msec): min=171, max=605, avg=313.21, stdev=176.02 lat (msec): min=171, max=605, avg=313.31, stdev=175.99 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1996, max= 4055, per=63.75%, avg=2695.33, stdev=1177.67, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=16.51%, ctx=753, 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=178997: Tue Aug 25 22:51:01 2026 read: IOPS=0, BW=302KiB/s (309kB/s)(2048KiB/6780msec) clat (msec): min=135, max=227, avg=181.79, stdev=65.09 lat (msec): min=135, max=227, avg=181.80, stdev=65.09 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 228], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 228], 95.00th=[ 228], | 99.00th=[ 228], 99.50th=[ 228], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 1875, max= 1939, per=63.15%, avg=1907.00, stdev=45.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1510KiB/s (1547kB/s)(10.0MiB/6780msec); 0 zone resets clat (msec): min=108, max=3066, avg=635.96, stdev=880.82 lat (msec): min=108, max=3066, avg=636.27, stdev=880.82 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 127], | 30.00th=[ 169], 40.00th=[ 259], 50.00th=[ 292], 60.00th=[ 498], | 70.00th=[ 514], 80.00th=[ 558], 90.00th=[ 768], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 1946, max= 6144, per=72.00%, avg=3044.33, stdev=1727.70, samples=6 iops : min= 1, max= 6, avg= 2.17, stdev= 2.04, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=12.63%, ctx=241, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178998: Tue Aug 25 22:51:01 2026 read: IOPS=1, BW=1071KiB/s (1096kB/s)(6144KiB/5738msec) clat (usec): min=878, max=341101, avg=210656.82, stdev=127013.19 lat (usec): min=880, max=341103, avg=210658.34, stdev=127013.37 clat percentiles (usec): | 1.00th=[ 881], 5.00th=[ 881], 10.00th=[ 881], 20.00th=[168821], | 30.00th=[168821], 40.00th=[181404], 50.00th=[181404], 60.00th=[231736], | 70.00th=[337642], 80.00th=[337642], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 2027, max= 3737, per=81.41%, avg=2458.50, stdev=852.34, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1071KiB/s (1096kB/s)(6144KiB/5738msec); 0 zone resets clat (msec): min=193, max=2857, avg=721.26, stdev=1051.79 lat (msec): min=193, max=2858, avg=721.36, stdev=1051.80 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 249], 50.00th=[ 249], 60.00th=[ 342], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1868, max= 2913, per=52.34%, avg=2212.75, stdev=473.42, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 1000=8.33% lat (msec) : 250=50.00%, 500=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=13.74%, ctx=295, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178999: Tue Aug 25 22:51:01 2026 read: IOPS=0, BW=773KiB/s (792kB/s)(5120KiB/6622msec) clat (usec): min=778, max=836401, avg=250979.37, stdev=347225.02 lat (usec): min=780, max=836403, avg=250981.24, stdev=347225.18 clat percentiles (usec): | 1.00th=[ 783], 5.00th=[ 783], 10.00th=[ 783], 20.00th=[ 783], | 30.00th=[ 2409], 40.00th=[ 2409], 50.00th=[132645], 60.00th=[132645], | 70.00th=[283116], 80.00th=[283116], 90.00th=[834667], 95.00th=[834667], | 99.00th=[834667], 99.50th=[834667], 99.90th=[834667], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 3750, max= 4071, per=100.00%, avg=3910.50, stdev=226.98, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1082KiB/s (1108kB/s)(7168KiB/6622msec); 0 zone resets clat (msec): min=202, max=2905, avg=752.38, stdev=958.95 lat (msec): min=202, max=2905, avg=752.49, stdev=958.93 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 300], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 409], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 617], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1921, max= 2035, per=47.44%, avg=2005.80, stdev=49.39, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 250=16.67%, 500=41.67%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=10.65%, ctx=249, 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=3021KiB/s (3093kB/s), 302KiB/s-1272KiB/s (309kB/s-1303kB/s), io=20.0MiB (20.0MB), run=5634-6780msec WRITE: bw=4229KiB/s (4330kB/s), 909KiB/s-1510KiB/s (931kB/s-1547kB/s), io=28.0MiB (29.4MB), run=5634-6780msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179000: Tue Aug 25 22:51:02 2026 read: IOPS=1, BW=1129KiB/s (1156kB/s)(7168KiB/6351msec) clat (msec): min=152, max=2505, avg=540.08, stdev=867.98 lat (msec): min=152, max=2505, avg=540.09, stdev=867.98 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 157], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 255], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 271], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 1954, max= 3716, per=85.13%, avg=2350.40, stdev=764.24, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=806KiB/s (826kB/s)(5120KiB/6351msec); 0 zone resets clat (msec): min=212, max=840, avg=477.78, stdev=260.38 lat (msec): min=212, max=840, avg=478.17, stdev=260.48 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1858, max= 4071, per=64.19%, avg=2481.50, stdev=1062.36, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.23%, ctx=160, 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=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=179001: Tue Aug 25 22:51:02 2026 read: IOPS=0, BW=292KiB/s (299kB/s)(2048KiB/7022msec) clat (msec): min=302, max=440, avg=371.82, stdev=97.46 lat (msec): min=302, max=440, avg=371.82, stdev=97.46 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 2039, max= 2043, per=73.92%, avg=2041.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1458KiB/s (1493kB/s)(10.0MiB/7022msec); 0 zone resets clat (msec): min=96, max=3991, avg=604.14, stdev=1194.98 lat (msec): min=97, max=3993, avg=604.37, stdev=1195.36 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 122], | 30.00th=[ 167], 40.00th=[ 171], 50.00th=[ 178], 60.00th=[ 215], | 70.00th=[ 334], 80.00th=[ 363], 90.00th=[ 405], 95.00th=[ 3977], | 99.00th=[ 3977], 99.50th=[ 3977], 99.90th=[ 3977], 99.95th=[ 3977], | 99.99th=[ 3977] bw ( KiB/s): min= 1954, max= 6131, per=94.27%, avg=3644.40, stdev=1727.17, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=41.67%, >=2000=8.33% cpu : usr=0.00%, sys=5.24%, ctx=123, 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=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=179002: Tue Aug 25 22:51:02 2026 read: IOPS=0, BW=890KiB/s (912kB/s)(6144KiB/6901msec) clat (msec): min=94, max=604, avg=288.47, stdev=211.48 lat (msec): min=94, max=604, avg=288.48, stdev=211.48 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 220], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1612, max= 2043, per=68.60%, avg=1894.00, stdev=172.12, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=890KiB/s (912kB/s)(6144KiB/6901msec); 0 zone resets clat (msec): min=84, max=2902, avg=828.43, stdev=1046.57 lat (msec): min=86, max=2902, avg=828.90, stdev=1046.24 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 584], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1858, max= 4079, per=77.46%, avg=2994.75, stdev=1212.93, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 750=41.67%, >=2000=8.33% cpu : usr=0.04%, sys=4.41%, ctx=165, 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=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=179003: Tue Aug 25 22:51:02 2026 read: IOPS=0, BW=690KiB/s (707kB/s)(5120KiB/7416msec) clat (msec): min=57, max=440, avg=185.21, stdev=148.87 lat (msec): min=57, max=440, avg=185.21, stdev=148.87 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 58], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 134], 60.00th=[ 134], | 70.00th=[ 178], 80.00th=[ 178], 90.00th=[ 439], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 2043, max= 4007, per=97.71%, avg=2697.67, stdev=1133.92, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=967KiB/s (990kB/s)(7168KiB/7416msec); 0 zone resets clat (msec): min=89, max=3104, avg=919.24, stdev=1060.87 lat (msec): min=89, max=3104, avg=919.41, stdev=1060.87 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 174], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 718], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 1301], 90.00th=[ 3104], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 1858, max= 4087, per=61.98%, avg=2396.20, stdev=948.20, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.17%, ctx=122, 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=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=2762KiB/s (2828kB/s), 292KiB/s-1129KiB/s (299kB/s-1156kB/s), io=20.0MiB (20.0MB), run=6351-7416msec WRITE: bw=3866KiB/s (3959kB/s), 806KiB/s-1458KiB/s (826kB/s-1493kB/s), io=28.0MiB (29.4MB), run=6351-7416msec 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=179013: Tue Aug 25 22:51:14 2026 read: IOPS=1, BW=5560KiB/s (5694kB/s)(12.0MiB/2210msec) clat (msec): min=632, max=864, avg=717.65, stdev=127.33 lat (msec): min=632, max=864, avg=717.65, stdev=127.33 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 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=100.00%, avg=8142.50, stdev=45.96, 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=18.02%, ctx=368, 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=179014: Tue Aug 25 22:51:14 2026 read: IOPS=0, BW=1578KiB/s (1616kB/s)(4096KiB/2596msec) clat (nsec): min=543305k, max=543305k, avg=543304546.00, stdev= 0.00 lat (nsec): min=543307k, max=543307k, avg=543306906.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3156KiB/s (3231kB/s)(8192KiB/2596msec); 0 zone resets clat (msec): min=787, max=1088, avg=938.00, stdev=212.53 lat (msec): min=790, max=1088, avg=939.62, stdev=210.79 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8110, max= 8110, per=64.25%, avg=8110.00, 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=4.74%, ctx=130, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179016: Tue Aug 25 22:51:14 2026 write: IOPS=1, BW=4763KiB/s (4877kB/s)(12.0MiB/2580msec); 0 zone resets clat (msec): min=314, max=1164, avg=814.76, stdev=444.59 lat (msec): min=314, max=1164, avg=815.32, stdev=444.69 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8175, max= 8175, per=64.77%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.27%, ctx=73, 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=179018: Tue Aug 25 22:51:14 2026 write: IOPS=1, BW=5854KiB/s (5995kB/s)(12.0MiB/2099msec); 0 zone resets clat (msec): min=187, max=1201, avg=653.47, stdev=512.14 lat (msec): min=191, max=1202, avg=655.18, stdev=510.36 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 1200], 80.00th=[ 1200], 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=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.53%, ctx=53, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6311KiB/s (6463kB/s), 1578KiB/s-5560KiB/s (1616kB/s-5694kB/s), io=16.0MiB (16.8MB), run=2210-2596msec WRITE: bw=12.3MiB/s (12.9MB/s), 3156KiB/s-5854KiB/s (3231kB/s-5995kB/s), io=32.0MiB (33.6MB), run=2099-2596msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179011: Tue Aug 25 22:51:14 2026 read: IOPS=2, BW=8834KiB/s (9046kB/s)(12.0MiB/1391msec) clat (msec): min=320, max=682, avg=451.79, stdev=200.20 lat (msec): min=320, max=682, avg=451.79, stdev=200.20 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 684], 80.00th=[ 684], 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= 6942, max= 8159, per=100.00%, avg=7550.50, stdev=860.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=8.35%, ctx=55, 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=179012: Tue Aug 25 22:51:14 2026 read: IOPS=0, BW=1342KiB/s (1374kB/s)(4096KiB/3053msec) clat (nsec): min=811820k, max=811820k, avg=811820113.00, stdev= 0.00 lat (nsec): min=811823k, max=811823k, avg=811822554.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2683KiB/s (2748kB/s)(8192KiB/3053msec); 0 zone resets clat (msec): min=1011, max=1153, avg=1082.67, stdev=100.25 lat (msec): min=1013, max=1153, avg=1083.76, stdev=99.19 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8143, max= 8143, per=80.72%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.57%, ctx=55, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179015: Tue Aug 25 22:51:14 2026 write: IOPS=0, BW=3783KiB/s (3874kB/s)(12.0MiB/3248msec); 0 zone resets clat (msec): min=280, max=1757, avg=1043.61, stdev=739.58 lat (msec): min=281, max=1761, avg=1045.05, stdev=741.20 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8078, max= 8175, per=80.56%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.03%, sys=4.09%, ctx=102, 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=179017: Tue Aug 25 22:51:14 2026 write: IOPS=1, BW=4806KiB/s (4921kB/s)(12.0MiB/2557msec); 0 zone resets clat (msec): min=679, max=999, avg=815.72, stdev=164.94 lat (msec): min=680, max=1003, avg=817.55, stdev=167.24 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8143, max= 8143, per=80.72%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.04%, sys=5.24%, ctx=80, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5367KiB/s (5495kB/s), 1342KiB/s-8834KiB/s (1374kB/s-9046kB/s), io=16.0MiB (16.8MB), run=1391-3053msec WRITE: bw=9.85MiB/s (10.3MB/s), 2683KiB/s-4806KiB/s (2748kB/s-4921kB/s), io=32.0MiB (33.6MB), run=2557-3248msec