== sanity test 398b: DIO and buffer IO race ============== 12:57:24 (1787849844) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.71483 s, 8.8 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=180485: Thu Aug 27 12:59:23 2026 read: IOPS=14, BW=58.1KiB/s (59.5kB/s)(5992KiB/103164msec) clat (usec): min=30, max=613746, avg=37439.29, stdev=29479.26 lat (usec): min=30, max=613747, avg=37442.51, stdev=29481.97 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9372], 10.00th=[ 14222], 20.00th=[ 19006], | 30.00th=[ 22938], 40.00th=[ 26608], 50.00th=[ 31065], 60.00th=[ 36439], | 70.00th=[ 44303], 80.00th=[ 52691], 90.00th=[ 65274], 95.00th=[ 81265], | 99.00th=[129500], 99.50th=[179307], 99.90th=[210764], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 10, max= 103, per=25.00%, avg=58.00, stdev=20.81, samples=203 iops : min= 2, max= 25, avg=13.85, stdev= 5.22, samples=203 write: IOPS=15, BW=61.0KiB/s (62.5kB/s)(6296KiB/103164msec); 0 zone resets clat (usec): min=929, max=201562, avg=29649.36, stdev=29018.14 lat (usec): min=930, max=201563, avg=29652.29, stdev=29020.22 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1827], 20.00th=[ 3818], | 30.00th=[ 7046], 40.00th=[ 15270], 50.00th=[ 22152], 60.00th=[ 29230], | 70.00th=[ 39060], 80.00th=[ 50594], 90.00th=[ 69731], 95.00th=[ 87557], | 99.00th=[120062], 99.50th=[141558], 99.90th=[179307], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 7, max= 127, per=25.10%, avg=60.99, stdev=23.71, samples=203 iops : min= 1, max= 31, avg=14.60, stdev= 5.93, samples=203 lat (usec) : 50=0.29%, 100=1.60%, 250=0.03%, 500=0.03%, 1000=0.13% lat (msec) : 2=5.50%, 4=5.05%, 10=7.49%, 20=15.23%, 50=42.71% lat (msec) : 100=19.08%, 250=2.83%, 750=0.03% cpu : usr=0.07%, sys=5.72%, ctx=6729, 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=180487: Thu Aug 27 12:59:23 2026 read: IOPS=14, BW=59.1KiB/s (60.5kB/s)(5940KiB/100587msec) clat (usec): min=38, max=160139, avg=36324.04, stdev=23957.89 lat (usec): min=39, max=160140, avg=36329.22, stdev=23958.73 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 6980], 10.00th=[ 13304], 20.00th=[ 18482], | 30.00th=[ 22414], 40.00th=[ 26608], 50.00th=[ 31327], 60.00th=[ 36963], | 70.00th=[ 42730], 80.00th=[ 51119], 90.00th=[ 65799], 95.00th=[ 82314], | 99.00th=[122160], 99.50th=[139461], 99.90th=[158335], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 5, max= 110, per=25.37%, avg=58.86, stdev=21.77, samples=197 iops : min= 1, max= 27, avg=14.07, stdev= 5.45, samples=197 write: IOPS=15, BW=63.1KiB/s (64.6kB/s)(6348KiB/100587msec); 0 zone resets clat (usec): min=969, max=464094, avg=29135.92, stdev=31340.11 lat (usec): min=969, max=464095, avg=29138.39, stdev=31339.10 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1205], 10.00th=[ 1729], 20.00th=[ 3228], | 30.00th=[ 6718], 40.00th=[ 13829], 50.00th=[ 21365], 60.00th=[ 28443], | 70.00th=[ 37487], 80.00th=[ 49546], 90.00th=[ 69731], 95.00th=[ 88605], | 99.00th=[129500], 99.50th=[149947], 99.90th=[225444], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 5, max= 128, per=25.69%, avg=62.42, stdev=24.05, samples=198 iops : min= 1, max= 32, avg=14.97, stdev= 6.05, samples=198 lat (usec) : 50=0.33%, 100=1.66%, 250=0.20%, 500=0.07%, 1000=0.07% lat (msec) : 2=6.25%, 4=5.83%, 10=7.29%, 20=14.52%, 50=43.65% lat (msec) : 100=17.48%, 250=2.64%, 500=0.03% cpu : usr=0.07%, sys=5.94%, ctx=6754, 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=180490: Thu Aug 27 12:59:23 2026 read: IOPS=14, BW=59.8KiB/s (61.3kB/s)(6028KiB/100732msec) clat (usec): min=36, max=461136, avg=37176.87, stdev=27094.64 lat (usec): min=36, max=461137, avg=37177.94, stdev=27094.62 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 363], 10.00th=[ 13698], 20.00th=[ 18482], | 30.00th=[ 22676], 40.00th=[ 26346], 50.00th=[ 31589], 60.00th=[ 38011], | 70.00th=[ 44303], 80.00th=[ 52691], 90.00th=[ 66323], 95.00th=[ 81265], | 99.00th=[124257], 99.50th=[149947], 99.90th=[229639], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 15, max= 119, per=25.60%, avg=59.39, stdev=19.56, samples=199 iops : min= 3, max= 29, avg=14.21, stdev= 4.87, samples=199 write: IOPS=15, BW=62.1KiB/s (63.6kB/s)(6260KiB/100732msec); 0 zone resets clat (usec): min=817, max=179875, avg=28327.31, stdev=28137.14 lat (usec): min=818, max=179876, avg=28329.88, stdev=28136.78 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1270], 10.00th=[ 1778], 20.00th=[ 3458], | 30.00th=[ 6587], 40.00th=[ 14484], 50.00th=[ 21365], 60.00th=[ 27919], | 70.00th=[ 36439], 80.00th=[ 47449], 90.00th=[ 67634], 95.00th=[ 84411], | 99.00th=[117965], 99.50th=[133694], 99.90th=[173016], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 7, max= 126, per=25.37%, avg=61.64, stdev=23.98, samples=199 iops : min= 1, max= 31, avg=14.77, stdev= 6.04, samples=199 lat (usec) : 50=0.36%, 100=1.79%, 250=0.29%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.86%, 4=5.63%, 10=6.77%, 20=15.23%, 50=43.16% lat (msec) : 100=18.29%, 250=2.44%, 500=0.03% cpu : usr=0.08%, sys=5.98%, ctx=6674, 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=180492: Thu Aug 27 12:59:23 2026 read: IOPS=14, BW=58.7KiB/s (60.1kB/s)(6052KiB/103048msec) clat (usec): min=42, max=475938, avg=38587.44, stdev=27968.23 lat (usec): min=42, max=475938, avg=38588.47, stdev=27968.29 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 9110], 10.00th=[ 14353], 20.00th=[ 18744], | 30.00th=[ 22938], 40.00th=[ 27657], 50.00th=[ 33424], 60.00th=[ 39060], | 70.00th=[ 45876], 80.00th=[ 54264], 90.00th=[ 66847], 95.00th=[ 84411], | 99.00th=[130548], 99.50th=[164627], 99.90th=[193987], 99.95th=[476054], | 99.99th=[476054] bw ( KiB/s): min= 5, max= 119, per=25.07%, avg=58.16, stdev=20.26, samples=203 iops : min= 1, max= 29, avg=13.90, stdev= 5.06, samples=203 write: IOPS=15, BW=60.5KiB/s (61.0kB/s)(6236KiB/103048msec); 0 zone resets clat (usec): min=1010, max=234504, avg=28386.99, stdev=29428.80 lat (usec): min=1011, max=234505, avg=28388.48, stdev=29428.64 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1237], 10.00th=[ 1549], 20.00th=[ 3032], | 30.00th=[ 5866], 40.00th=[ 13566], 50.00th=[ 20317], 60.00th=[ 27132], | 70.00th=[ 36963], 80.00th=[ 49021], 90.00th=[ 69731], 95.00th=[ 85459], | 99.00th=[128451], 99.50th=[149947], 99.90th=[210764], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 7, max= 135, per=24.66%, avg=59.93, stdev=25.18, samples=203 iops : min= 1, max= 33, avg=14.33, stdev= 6.31, samples=203 lat (usec) : 50=0.26%, 100=1.46%, 250=0.20%, 500=0.07% lat (msec) : 2=7.10%, 4=5.21%, 10=7.00%, 20=14.78%, 50=41.89% lat (msec) : 100=19.34%, 250=2.67%, 500=0.03% cpu : usr=0.08%, sys=5.89%, ctx=6763, 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=233KiB/s (238kB/s), 58.1KiB/s-59.8KiB/s (59.5kB/s-61.3kB/s), io=23.4MiB (24.6MB), run=100587-103164msec WRITE: bw=244KiB/s (250kB/s), 60.5KiB/s-63.1KiB/s (61.0kB/s-64.6kB/s), io=24.6MiB (25.7MB), run=100587-103164msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180486: Thu Aug 27 13:00:03 2026 read: IOPS=10, BW=42.1KiB/s (43.2kB/s)(5992KiB/142180msec) clat (msec): min=5, max=619, avg=37.43, stdev=34.65 lat (msec): min=5, max=619, avg=37.43, stdev=34.65 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 79], 95.00th=[ 105], | 99.00th=[ 153], 99.50th=[ 176], 99.90th=[ 292], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 7, max= 160, per=25.10%, avg=41.92, stdev=26.22, samples=279 iops : min= 1, max= 40, avg= 9.84, stdev= 6.60, samples=279 write: IOPS=11, BW=44.3KiB/s (45.3kB/s)(6296KiB/142180msec); 0 zone resets clat (msec): min=11, max=235, avg=54.45, stdev=33.82 lat (msec): min=11, max=235, avg=54.46, stdev=33.82 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 62], 80.00th=[ 78], 90.00th=[ 100], 95.00th=[ 123], | 99.00th=[ 182], 99.50th=[ 203], 99.90th=[ 222], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 7, max= 126, per=25.10%, avg=43.92, stdev=22.76, samples=280 iops : min= 1, max= 31, avg=10.34, stdev= 5.74, samples=280 lat (msec) : 10=2.34%, 20=16.70%, 50=48.73%, 100=24.54%, 250=7.62% lat (msec) : 500=0.03%, 750=0.03% cpu : usr=0.06%, sys=2.06%, ctx=4655, 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=180488: Thu Aug 27 13:00:03 2026 read: IOPS=10, BW=41.8KiB/s (42.8kB/s)(5940KiB/142018msec) clat (msec): min=4, max=488, avg=37.13, stdev=32.86 lat (msec): min=4, max=488, avg=37.14, stdev=32.86 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 52], 90.00th=[ 75], 95.00th=[ 96], | 99.00th=[ 153], 99.50th=[ 188], 99.90th=[ 296], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 7, max= 144, per=24.92%, avg=41.62, stdev=24.39, samples=279 iops : min= 1, max= 36, avg= 9.77, stdev= 6.13, samples=279 write: IOPS=11, BW=44.7KiB/s (45.8kB/s)(6348KiB/142018msec); 0 zone resets clat (msec): min=7, max=340, avg=54.50, stdev=35.32 lat (msec): min=7, max=340, avg=54.51, stdev=35.32 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 63], 80.00th=[ 79], 90.00th=[ 101], 95.00th=[ 117], | 99.00th=[ 182], 99.50th=[ 215], 99.90th=[ 271], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 144, per=25.55%, avg=44.71, stdev=23.08, samples=278 iops : min= 1, max= 36, avg=10.54, stdev= 5.80, samples=278 lat (msec) : 10=2.38%, 20=16.24%, 50=49.45%, 100=24.54%, 250=7.19% lat (msec) : 500=0.20% cpu : usr=0.06%, sys=2.07%, ctx=4847, 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=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=180489: Thu Aug 27 13:00:03 2026 read: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6028KiB/143108msec) clat (msec): min=4, max=219, avg=38.11, stdev=31.20 lat (msec): min=4, max=219, avg=38.11, stdev=31.20 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 78], 95.00th=[ 103], | 99.00th=[ 155], 99.50th=[ 186], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 7, max= 143, per=25.27%, avg=42.20, stdev=25.41, samples=279 iops : min= 1, max= 35, avg= 9.91, stdev= 6.38, samples=279 write: IOPS=10, BW=43.7KiB/s (44.8kB/s)(6260KiB/143108msec); 0 zone resets clat (msec): min=10, max=491, avg=54.50, stdev=36.47 lat (msec): min=10, max=491, avg=54.50, stdev=36.47 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 52], | 70.00th=[ 62], 80.00th=[ 77], 90.00th=[ 101], 95.00th=[ 125], | 99.00th=[ 184], 99.50th=[ 203], 99.90th=[ 253], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 7, max= 135, per=24.77%, avg=43.35, stdev=23.34, samples=282 iops : min= 1, max= 33, avg=10.20, stdev= 5.88, samples=282 lat (msec) : 10=2.38%, 20=16.31%, 50=48.50%, 100=25.13%, 250=7.62% lat (msec) : 500=0.07% cpu : usr=0.06%, sys=2.03%, ctx=4797, 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=180491: Thu Aug 27 13:00:03 2026 read: IOPS=10, BW=42.4KiB/s (43.4kB/s)(6052KiB/142884msec) clat (msec): min=5, max=256, avg=37.51, stdev=30.52 lat (msec): min=5, max=256, avg=37.51, stdev=30.52 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 78], 95.00th=[ 103], | 99.00th=[ 150], 99.50th=[ 165], 99.90th=[ 222], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 7, max= 143, per=25.74%, avg=42.98, stdev=24.07, samples=274 iops : min= 1, max= 35, avg=10.11, stdev= 6.05, samples=274 write: IOPS=10, BW=43.6KiB/s (44.7kB/s)(6236KiB/142884msec); 0 zone resets clat (msec): min=10, max=502, avg=55.00, stdev=37.84 lat (msec): min=10, max=502, avg=55.00, stdev=37.84 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 44], 60.00th=[ 52], | 70.00th=[ 63], 80.00th=[ 77], 90.00th=[ 101], 95.00th=[ 128], | 99.00th=[ 190], 99.50th=[ 205], 99.90th=[ 338], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7, max= 134, per=24.87%, avg=43.52, stdev=22.57, samples=279 iops : min= 1, max= 33, avg=10.24, stdev= 5.68, samples=279 lat (msec) : 10=2.34%, 20=16.73%, 50=48.63%, 100=24.54%, 250=7.62% lat (msec) : 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=1.99%, ctx=4704, 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=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), 41.8KiB/s-42.4KiB/s (42.8kB/s-43.4kB/s), io=23.4MiB (24.6MB), run=142018-143108msec WRITE: bw=176KiB/s (180kB/s), 43.6KiB/s-44.7KiB/s (44.7kB/s-45.8kB/s), io=24.6MiB (25.7MB), run=142018-143108msec 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=180536: Thu Aug 27 13:00:40 2026 read: IOPS=14, BW=237KiB/s (243kB/s)(5920KiB/24973msec) clat (usec): min=36, max=212798, avg=35877.77, stdev=25393.91 lat (usec): min=36, max=212800, avg=35878.94, stdev=25393.92 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 578], 20.00th=[ 19268], | 30.00th=[ 22938], 40.00th=[ 27395], 50.00th=[ 31589], 60.00th=[ 36963], | 70.00th=[ 44827], 80.00th=[ 51119], 90.00th=[ 62653], 95.00th=[ 81265], | 99.00th=[124257], 99.50th=[139461], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 95, max= 383, per=25.99%, avg=236.51, stdev=72.89, samples=49 iops : min= 5, max= 23, avg=14.00, stdev= 4.60, samples=49 write: IOPS=15, BW=255KiB/s (261kB/s)(6368KiB/24973msec); 0 zone resets clat (usec): min=1422, max=160845, avg=29345.98, stdev=26811.32 lat (usec): min=1424, max=160847, avg=29349.18, stdev=26810.88 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2147], 10.00th=[ 3294], 20.00th=[ 5473], | 30.00th=[ 9896], 40.00th=[ 17171], 50.00th=[ 23200], 60.00th=[ 28967], | 70.00th=[ 39060], 80.00th=[ 49021], 90.00th=[ 61080], 95.00th=[ 81265], | 99.00th=[121111], 99.50th=[139461], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 63, max= 447, per=26.60%, avg=254.53, stdev=76.48, samples=49 iops : min= 3, max= 27, avg=15.14, stdev= 4.79, samples=49 lat (usec) : 50=0.39%, 100=3.78%, 250=0.52%, 750=0.26% lat (msec) : 2=1.82%, 4=5.08%, 10=9.38%, 20=12.76%, 50=46.09% lat (msec) : 100=16.93%, 250=2.99% cpu : usr=0.07%, sys=6.90%, ctx=1729, 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=180537: Thu Aug 27 13:00:40 2026 read: IOPS=13, BW=219KiB/s (224kB/s)(5744KiB/26224msec) clat (usec): min=48, max=202890, avg=36767.20, stdev=24672.89 lat (usec): min=50, max=202891, avg=36768.38, stdev=24672.88 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 67], 10.00th=[ 13042], 20.00th=[ 19006], | 30.00th=[ 24511], 40.00th=[ 29492], 50.00th=[ 33162], 60.00th=[ 36963], | 70.00th=[ 44827], 80.00th=[ 52167], 90.00th=[ 67634], 95.00th=[ 77071], | 99.00th=[117965], 99.50th=[158335], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 31, max= 407, per=23.95%, avg=217.98, stdev=82.14, samples=51 iops : min= 1, max= 25, avg=12.84, stdev= 5.20, samples=51 write: IOPS=15, BW=250KiB/s (256kB/s)(6544KiB/26224msec); 0 zone resets clat (usec): min=1533, max=142742, avg=31758.75, stdev=29614.37 lat (usec): min=1536, max=142743, avg=31760.92, stdev=29614.54 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2343], 10.00th=[ 3195], 20.00th=[ 5669], | 30.00th=[ 10159], 40.00th=[ 16319], 50.00th=[ 22152], 60.00th=[ 30278], | 70.00th=[ 41157], 80.00th=[ 55313], 90.00th=[ 72877], 95.00th=[ 90702], | 99.00th=[125305], 99.50th=[128451], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 63, max= 446, per=25.93%, avg=248.12, stdev=89.68, samples=51 iops : min= 3, max= 27, avg=14.71, stdev= 5.68, samples=51 lat (usec) : 50=0.39%, 100=2.99%, 250=0.26%, 500=0.26% lat (msec) : 2=1.82%, 4=4.95%, 10=9.24%, 20=14.45%, 50=42.19% lat (msec) : 100=20.44%, 250=2.99% cpu : usr=0.09%, sys=6.90%, ctx=1793, 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=180538: Thu Aug 27 13:00:40 2026 read: IOPS=14, BW=238KiB/s (243kB/s)(6256KiB/26309msec) clat (usec): min=41, max=155631, avg=37579.43, stdev=23357.77 lat (usec): min=41, max=155631, avg=37580.64, stdev=23357.77 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 72], 10.00th=[ 13829], 20.00th=[ 20841], | 30.00th=[ 25297], 40.00th=[ 29492], 50.00th=[ 33424], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 55313], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[109577], 99.50th=[137364], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 95, max= 446, per=26.24%, avg=238.80, stdev=71.25, samples=51 iops : min= 5, max= 27, avg=14.16, stdev= 4.53, samples=51 write: IOPS=14, BW=229KiB/s (235kB/s)(6032KiB/26309msec); 0 zone resets clat (usec): min=1418, max=201355, avg=30716.69, stdev=29224.81 lat (usec): min=1420, max=201357, avg=30720.56, stdev=29227.35 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 2024], 10.00th=[ 2769], 20.00th=[ 5080], | 30.00th=[ 9765], 40.00th=[ 14746], 50.00th=[ 22676], 60.00th=[ 30802], | 70.00th=[ 40633], 80.00th=[ 53740], 90.00th=[ 69731], 95.00th=[ 85459], | 99.00th=[126354], 99.50th=[162530], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 63, max= 478, per=23.66%, avg=226.39, stdev=82.51, samples=51 iops : min= 3, max= 29, avg=13.35, stdev= 5.16, samples=51 lat (usec) : 50=0.39%, 100=3.12%, 250=0.39%, 500=0.13%, 1000=0.13% lat (msec) : 2=2.21%, 4=5.60%, 10=7.29%, 20=12.11%, 50=45.18% lat (msec) : 100=21.22%, 250=2.21% cpu : usr=0.07%, sys=6.88%, ctx=1839, 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=180539: Thu Aug 27 13:00:40 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(6032KiB/24431msec) clat (usec): min=48, max=222128, avg=35651.24, stdev=24999.96 lat (usec): min=49, max=222129, avg=35653.03, stdev=25000.39 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 13173], 20.00th=[ 19006], | 30.00th=[ 22938], 40.00th=[ 27132], 50.00th=[ 31851], 60.00th=[ 36963], | 70.00th=[ 43779], 80.00th=[ 49546], 90.00th=[ 63177], 95.00th=[ 77071], | 99.00th=[122160], 99.50th=[168821], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 63, max= 448, per=27.13%, avg=246.87, stdev=81.65, samples=48 iops : min= 3, max= 28, avg=14.67, stdev= 5.17, samples=48 write: IOPS=16, BW=256KiB/s (262kB/s)(6256KiB/24431msec); 0 zone resets clat (usec): min=1593, max=150237, avg=27992.31, stdev=26422.98 lat (usec): min=1594, max=150238, avg=28009.39, stdev=26419.08 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2114], 10.00th=[ 3261], 20.00th=[ 5014], | 30.00th=[ 8094], 40.00th=[ 12780], 50.00th=[ 20841], 60.00th=[ 28181], | 70.00th=[ 35914], 80.00th=[ 47449], 90.00th=[ 66323], 95.00th=[ 83362], | 99.00th=[114820], 99.50th=[126354], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 95, max= 384, per=26.78%, avg=256.31, stdev=86.97, samples=48 iops : min= 5, max= 24, avg=15.25, stdev= 5.48, samples=48 lat (usec) : 50=0.13%, 100=3.12%, 250=0.91%, 750=0.26% lat (msec) : 2=2.08%, 4=4.43%, 10=12.11%, 20=12.50%, 50=45.44% lat (msec) : 100=17.45%, 250=1.56% cpu : usr=0.05%, sys=6.95%, ctx=1663, 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=910KiB/s (932kB/s), 219KiB/s-247KiB/s (224kB/s-253kB/s), io=23.4MiB (24.5MB), run=24431-26309msec WRITE: bw=958KiB/s (981kB/s), 229KiB/s-256KiB/s (235kB/s-262kB/s), io=24.6MiB (25.8MB), run=24431-26309msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180531: Thu Aug 27 13:00:49 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5920KiB/35046msec) clat (msec): min=6, max=205, avg=37.59, stdev=31.08 lat (msec): min=6, max=205, avg=37.59, stdev=31.08 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 80], 95.00th=[ 100], | 99.00th=[ 155], 99.50th=[ 199], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 31, max= 448, per=24.67%, avg=167.04, stdev=102.01, samples=69 iops : min= 1, max= 28, avg= 9.72, stdev= 6.50, samples=69 write: IOPS=11, BW=182KiB/s (186kB/s)(6368KiB/35046msec); 0 zone resets clat (msec): min=13, max=200, avg=52.93, stdev=34.24 lat (msec): min=13, max=200, avg=52.93, stdev=34.24 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 50], | 70.00th=[ 62], 80.00th=[ 78], 90.00th=[ 96], 95.00th=[ 125], | 99.00th=[ 188], 99.50th=[ 192], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 31, max= 446, per=25.42%, avg=181.01, stdev=92.52, samples=69 iops : min= 1, max= 27, avg=10.59, stdev= 5.87, samples=69 lat (msec) : 10=2.34%, 20=17.97%, 50=48.05%, 100=25.13%, 250=6.51% cpu : usr=0.06%, sys=2.23%, ctx=1176, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180532: Thu Aug 27 13:00:49 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(5744KiB/34680msec) clat (msec): min=7, max=195, avg=36.55, stdev=29.08 lat (msec): min=7, max=195, avg=36.56, stdev=29.09 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 78], 95.00th=[ 101], | 99.00th=[ 142], 99.50th=[ 171], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 31, max= 416, per=24.67%, avg=167.03, stdev=98.60, samples=67 iops : min= 1, max= 26, avg= 9.72, stdev= 6.22, samples=67 write: IOPS=11, BW=189KiB/s (193kB/s)(6544KiB/34680msec); 0 zone resets clat (msec): min=14, max=179, avg=52.34, stdev=31.39 lat (msec): min=14, max=179, avg=52.34, stdev=31.39 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 51], | 70.00th=[ 63], 80.00th=[ 75], 90.00th=[ 94], 95.00th=[ 123], | 99.00th=[ 150], 99.50th=[ 157], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 62, max= 446, per=26.33%, avg=187.46, stdev=93.03, samples=68 iops : min= 3, max= 27, avg=11.00, stdev= 5.96, samples=68 lat (msec) : 10=1.56%, 20=15.49%, 50=52.08%, 100=24.09%, 250=6.77% cpu : usr=0.07%, sys=2.16%, ctx=1149, 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=180533: Thu Aug 27 13:00:49 2026 read: IOPS=11, BW=179KiB/s (183kB/s)(6256KiB/35001msec) clat (msec): min=6, max=184, avg=36.19, stdev=29.68 lat (msec): min=6, max=184, avg=36.19, stdev=29.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 39], 80.00th=[ 55], 90.00th=[ 81], 95.00th=[ 102], | 99.00th=[ 157], 99.50th=[ 169], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 32, max= 629, per=26.47%, avg=179.22, stdev=116.18, samples=69 iops : min= 2, max= 39, avg=10.49, stdev= 7.34, samples=69 write: IOPS=10, BW=172KiB/s (176kB/s)(6032KiB/35001msec); 0 zone resets clat (msec): min=10, max=280, avg=54.98, stdev=35.34 lat (msec): min=10, max=280, avg=54.98, stdev=35.34 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 62], 80.00th=[ 80], 90.00th=[ 105], 95.00th=[ 123], | 99.00th=[ 182], 99.50th=[ 192], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 478, per=24.01%, avg=170.96, stdev=89.85, samples=69 iops : min= 1, max= 29, avg= 9.97, stdev= 5.71, samples=69 lat (msec) : 10=2.08%, 20=17.71%, 50=47.66%, 100=24.35%, 250=8.07% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.09%, ctx=1150, 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=180534: Thu Aug 27 13:00:49 2026 read: IOPS=10, BW=171KiB/s (175kB/s)(6032KiB/35367msec) clat (msec): min=6, max=205, avg=38.78, stdev=32.47 lat (msec): min=6, max=205, avg=38.78, stdev=32.47 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 54], 90.00th=[ 84], 95.00th=[ 109], | 99.00th=[ 163], 99.50th=[ 199], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 31, max= 479, per=25.33%, avg=171.46, stdev=99.09, samples=69 iops : min= 1, max= 29, avg=10.00, stdev= 6.27, samples=69 write: IOPS=11, BW=177KiB/s (181kB/s)(6256KiB/35367msec); 0 zone resets clat (msec): min=11, max=267, avg=52.67, stdev=34.70 lat (msec): min=11, max=267, avg=52.67, stdev=34.70 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 50], | 70.00th=[ 61], 80.00th=[ 78], 90.00th=[ 101], 95.00th=[ 122], | 99.00th=[ 178], 99.50th=[ 197], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 416, per=25.20%, avg=179.41, stdev=97.18, samples=69 iops : min= 1, max= 26, avg=10.49, stdev= 6.18, samples=69 lat (msec) : 10=1.43%, 20=18.23%, 50=49.22%, 100=22.79%, 250=8.20% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=2.00%, ctx=1188, 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=677KiB/s (693kB/s), 166KiB/s-179KiB/s (170kB/s-183kB/s), io=23.4MiB (24.5MB), run=34680-35367msec WRITE: bw=713KiB/s (730kB/s), 172KiB/s-189KiB/s (176kB/s-193kB/s), io=24.6MiB (25.8MB), run=34680-35367msec 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=180557: Thu Aug 27 13:01:06 2026 read: IOPS=1, BW=1073KiB/s (1098kB/s)(7168KiB/6682msec) clat (msec): min=92, max=1092, avg=277.84, stdev=362.44 lat (msec): min=92, max=1092, avg=277.84, stdev=362.44 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 107], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 138], | 70.00th=[ 138], 80.00th=[ 245], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1602, max= 3849, per=81.62%, avg=2378.50, stdev=1001.11, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=766KiB/s (785kB/s)(5120KiB/6682msec); 0 zone resets clat (msec): min=259, max=2944, avg=903.31, stdev=1145.97 lat (msec): min=259, max=2944, avg=903.39, stdev=1145.97 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 2015, max= 4079, per=66.52%, avg=2714.00, stdev=1182.24, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.65%, ctx=91, 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=180558: Thu Aug 27 13:01:06 2026 read: IOPS=0, BW=348KiB/s (357kB/s)(2048KiB/5882msec) clat (msec): min=369, max=2199, avg=1284.27, stdev=1293.99 lat (msec): min=369, max=2199, avg=1284.27, stdev=1293.99 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 2198], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 1563, max= 2015, per=61.39%, avg=1789.00, stdev=319.61, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1741KiB/s (1783kB/s)(10.0MiB/5882msec); 0 zone resets clat (msec): min=85, max=896, avg=323.63, stdev=267.75 lat (msec): min=85, max=896, avg=323.77, stdev=267.75 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 112], | 30.00th=[ 120], 40.00th=[ 123], 50.00th=[ 232], 60.00th=[ 249], | 70.00th=[ 330], 80.00th=[ 447], 90.00th=[ 642], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1924, max= 5953, per=73.87%, avg=3014.00, stdev=1664.98, samples=6 iops : min= 1, max= 5, avg= 2.50, stdev= 1.64, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.35%, ctx=92, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180559: Thu Aug 27 13:01:06 2026 read: IOPS=0, BW=918KiB/s (940kB/s)(6144KiB/6695msec) clat (msec): min=65, max=3451, avg=707.00, stdev=1347.50 lat (msec): min=65, max=3451, avg=707.00, stdev=1347.50 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 88], | 30.00th=[ 88], 40.00th=[ 110], 50.00th=[ 110], 60.00th=[ 239], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 2043, max= 4079, per=93.46%, avg=2723.33, stdev=1174.04, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=918KiB/s (940kB/s)(6144KiB/6695msec); 0 zone resets clat (msec): min=109, max=1234, avg=371.23, stdev=428.51 lat (msec): min=109, max=1234, avg=371.30, stdev=428.50 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 236], | 70.00th=[ 309], 80.00th=[ 309], 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= 2043, max= 3185, per=59.44%, avg=2425.33, stdev=657.90, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.96%, ctx=88, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180560: Thu Aug 27 13:01:06 2026 read: IOPS=0, BW=729KiB/s (746kB/s)(5120KiB/7026msec) clat (msec): min=92, max=266, avg=172.57, stdev=77.23 lat (msec): min=92, max=266, avg=172.57, stdev=77.23 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 176], 60.00th=[ 176], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 268], 95.00th=[ 268], | 99.00th=[ 268], 99.50th=[ 268], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 4079, max= 4096, per=100.00%, avg=4087.50, stdev=12.02, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=0, BW=1020KiB/s (1045kB/s)(7168KiB/7026msec); 0 zone resets clat (msec): min=78, max=3657, avg=869.88, stdev=1287.37 lat (msec): min=78, max=3657, avg=869.98, stdev=1287.37 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 90], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 493], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 1150], 90.00th=[ 3641], 95.00th=[ 3641], | 99.00th=[ 3641], 99.50th=[ 3641], 99.90th=[ 3641], 99.95th=[ 3641], | 99.99th=[ 3641] bw ( KiB/s): min= 1481, max= 2048, per=46.76%, avg=1908.00, stdev=244.41, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 100=33.33%, 250=25.00%, 500=16.67%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=2.18%, ctx=83, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2915KiB/s (2985kB/s), 348KiB/s-1073KiB/s (357kB/s-1098kB/s), io=20.0MiB (20.0MB), run=5882-7026msec WRITE: bw=4081KiB/s (4179kB/s), 766KiB/s-1741KiB/s (785kB/s-1783kB/s), io=28.0MiB (29.4MB), run=5882-7026msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180553: Thu Aug 27 13:01:06 2026 read: IOPS=3, BW=3591KiB/s (3677kB/s)(7168KiB/1996msec) clat (usec): min=675, max=182923, avg=125592.03, stdev=59996.76 lat (usec): min=677, max=182925, avg=125593.65, stdev=59996.79 clat percentiles (usec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[106431], | 30.00th=[128451], 40.00th=[128451], 50.00th=[152044], 60.00th=[152044], | 70.00th=[152044], 80.00th=[156238], 90.00th=[183501], 95.00th=[183501], | 99.00th=[183501], 99.50th=[183501], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 2027, max= 4190, per=100.00%, avg=3434.67, stdev=1220.16, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2565KiB/s (2627kB/s)(5120KiB/1996msec); 0 zone resets clat (msec): min=137, max=215, avg=174.38, stdev=37.62 lat (msec): min=137, max=216, avg=174.90, stdev=37.49 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 159], 60.00th=[ 159], | 70.00th=[ 215], 80.00th=[ 215], 90.00th=[ 215], 95.00th=[ 215], | 99.00th=[ 215], 99.50th=[ 215], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 2043, max= 6083, per=100.00%, avg=4063.00, stdev=2856.71, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (usec) : 750=8.33% lat (msec) : 250=91.67% cpu : usr=0.10%, sys=23.96%, ctx=152, 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=180554: Thu Aug 27 13:01:06 2026 read: IOPS=0, BW=331KiB/s (339kB/s)(2048KiB/6182msec) clat (msec): min=123, max=323, avg=223.80, stdev=141.70 lat (msec): min=123, max=324, avg=223.80, stdev=141.70 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 1406, max= 2039, per=60.82%, avg=1722.50, stdev=447.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1656KiB/s (1696kB/s)(10.0MiB/6182msec); 0 zone resets clat (msec): min=151, max=3102, avg=541.66, stdev=906.51 lat (msec): min=151, max=3102, avg=541.77, stdev=906.51 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 171], | 30.00th=[ 190], 40.00th=[ 209], 50.00th=[ 226], 60.00th=[ 234], | 70.00th=[ 247], 80.00th=[ 359], 90.00th=[ 531], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 2007, max= 6059, per=100.00%, avg=4058.00, stdev=1654.48, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 1.63, samples=4 lat (msec) : 250=66.67%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=10.48%, ctx=182, 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=180555: Thu Aug 27 13:01:06 2026 read: IOPS=1, BW=1244KiB/s (1274kB/s)(6144KiB/4939msec) clat (usec): min=686, max=2650.8k, avg=538829.94, stdev=1039583.11 lat (usec): min=687, max=2650.8k, avg=538831.43, stdev=1039583.13 clat percentiles (usec): | 1.00th=[ 685], 5.00th=[ 685], 10.00th=[ 685], | 20.00th=[ 2540], 30.00th=[ 2540], 40.00th=[ 133694], | 50.00th=[ 133694], 60.00th=[ 191890], 70.00th=[ 252707], | 80.00th=[ 252707], 90.00th=[2667578], 95.00th=[2667578], | 99.00th=[2667578], 99.50th=[2667578], 99.90th=[2667578], | 99.95th=[2667578], 99.99th=[2667578] bw ( KiB/s): min= 2027, max= 5941, per=100.00%, avg=3337.00, stdev=2255.14, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1244KiB/s (1274kB/s)(6144KiB/4939msec); 0 zone resets clat (msec): min=149, max=631, avg=274.11, stdev=184.45 lat (msec): min=149, max=631, avg=274.18, stdev=184.44 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 186], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 2027, max= 3961, per=68.15%, avg=2702.25, stdev=909.35, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=10.55%, ctx=531, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180556: Thu Aug 27 13:01:06 2026 read: IOPS=0, BW=708KiB/s (725kB/s)(5120KiB/7230msec) clat (msec): min=110, max=210, avg=156.41, stdev=41.52 lat (msec): min=110, max=210, avg=156.42, stdev=41.52 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 111], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 186], 80.00th=[ 186], 90.00th=[ 211], 95.00th=[ 211], | 99.00th=[ 211], 99.50th=[ 211], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 7831, max= 7831, per=100.00%, avg=7831.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=0, BW=991KiB/s (1015kB/s)(7168KiB/7230msec); 0 zone resets clat (msec): min=84, max=3510, avg=886.31, stdev=1242.06 lat (msec): min=84, max=3510, avg=886.38, stdev=1242.05 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 86], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 464], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 1385], 90.00th=[ 3507], 95.00th=[ 3507], | 99.00th=[ 3507], 99.50th=[ 3507], 99.90th=[ 3507], 99.95th=[ 3507], | 99.99th=[ 3507] bw ( KiB/s): min= 2007, max= 2043, per=51.05%, avg=2024.00, stdev=15.10, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=7.22%, ctx=144, 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=2833KiB/s (2901kB/s), 331KiB/s-3591KiB/s (339kB/s-3677kB/s), io=20.0MiB (20.0MB), run=1996-7230msec WRITE: bw=3966KiB/s (4061kB/s), 991KiB/s-2565KiB/s (1015kB/s-2627kB/s), io=28.0MiB (29.4MB), run=1996-7230msec 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=180585: Thu Aug 27 13:01:20 2026 read: IOPS=1, BW=4280KiB/s (4383kB/s)(12.0MiB/2871msec) clat (msec): min=299, max=1427, avg=956.67, stdev=586.84 lat (msec): min=299, max=1427, avg=956.67, stdev=586.84 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.72%, ctx=52, 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=180586: Thu Aug 27 13:01:20 2026 read: IOPS=0, BW=1381KiB/s (1414kB/s)(4096KiB/2967msec) clat (nsec): min=1803.7M, max=1803.7M, avg=1803733722.00, stdev= 0.00 lat (nsec): min=1803.7M, max=1803.7M, avg=1803734787.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1804], 5.00th=[ 1804], 10.00th=[ 1804], 20.00th=[ 1804], | 30.00th=[ 1804], 40.00th=[ 1804], 50.00th=[ 1804], 60.00th=[ 1804], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2761KiB/s (2827kB/s)(8192KiB/2967msec); 0 zone resets clat (msec): min=408, max=749, avg=578.94, stdev=241.06 lat (msec): min=408, max=749, avg=579.19, stdev=240.96 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8126, max= 8126, per=73.58%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.03%, sys=3.24%, ctx=45, 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=180587: Thu Aug 27 13:01:20 2026 write: IOPS=1, BW=4746KiB/s (4860kB/s)(12.0MiB/2589msec); 0 zone resets clat (msec): min=301, max=1237, avg=849.40, stdev=488.02 lat (msec): min=301, max=1237, avg=849.69, stdev=488.02 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1234], 80.00th=[ 1234], 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= 7984, max= 8159, per=73.08%, avg=8071.50, stdev=123.74, 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=0.00%, sys=3.59%, ctx=35, 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=180588: Thu Aug 27 13:01:20 2026 write: IOPS=1, BW=4483KiB/s (4591kB/s)(12.0MiB/2741msec); 0 zone resets clat (msec): min=586, max=1293, avg=912.42, stdev=356.70 lat (msec): min=586, max=1293, avg=912.80, stdev=356.83 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 5777, max= 8110, per=62.87%, avg=6943.50, stdev=1649.68, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.83%, ctx=37, 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=5522KiB/s (5655kB/s), 1381KiB/s-4280KiB/s (1414kB/s-4383kB/s), io=16.0MiB (16.8MB), run=2871-2967msec WRITE: bw=10.8MiB/s (11.3MB/s), 2761KiB/s-4746KiB/s (2827kB/s-4860kB/s), io=32.0MiB (33.6MB), run=2589-2967msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180580: Thu Aug 27 13:01:20 2026 read: IOPS=1, BW=4732KiB/s (4845kB/s)(12.0MiB/2597msec) clat (msec): min=759, max=879, avg=829.80, stdev=62.32 lat (msec): min=760, max=879, avg=829.80, stdev=62.32 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7953, max= 8143, per=100.00%, avg=8048.00, stdev=134.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.15%, sys=13.29%, ctx=192, 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=180581: Thu Aug 27 13:01:20 2026 read: IOPS=0, BW=1661KiB/s (1701kB/s)(4096KiB/2466msec) clat (nsec): min=880044k, max=880044k, avg=880043621.00, stdev= 0.00 lat (nsec): min=880045k, max=880045k, avg=880045328.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7953, max= 7953, per=100.00%, avg=7953.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3322KiB/s (3402kB/s)(8192KiB/2466msec); 0 zone resets clat (msec): min=652, max=813, avg=732.96, stdev=114.42 lat (msec): min=652, max=814, avg=733.26, stdev=114.37 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 8143, max= 8143, per=89.77%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=5.60%, ctx=77, 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=180582: Thu Aug 27 13:01:20 2026 write: IOPS=0, BW=3402KiB/s (3484kB/s)(12.0MiB/3612msec); 0 zone resets clat (msec): min=211, max=2697, avg=1164.04, stdev=1341.17 lat (msec): min=214, max=2698, avg=1165.48, stdev=1340.03 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 2702], 80.00th=[ 2702], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 8159, max= 8159, per=89.95%, avg=8159.00, 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=3.71%, ctx=56, 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=180583: Thu Aug 27 13:01:20 2026 write: IOPS=0, BW=3975KiB/s (4071kB/s)(12.0MiB/3091msec); 0 zone resets clat (msec): min=231, max=1878, avg=982.73, stdev=833.10 lat (msec): min=231, max=1881, avg=983.88, stdev=834.43 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 5595, max= 7953, per=74.68%, avg=6774.00, stdev=1667.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.79%, ctx=66, 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=6309KiB/s (6460kB/s), 1661KiB/s-4732KiB/s (1701kB/s-4845kB/s), io=16.0MiB (16.8MB), run=2466-2597msec WRITE: bw=9072KiB/s (9290kB/s), 3322KiB/s-3975KiB/s (3402kB/s-4071kB/s), io=32.0MiB (33.6MB), run=2466-3612msec