== sanity test 398b: DIO and buffer IO race ============== 22:23:32 (1767324212) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.30906 s, 15.2 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=186827: Thu Jan 1 22:24:57 2026 read: IOPS=20, BW=81.3KiB/s (83.2kB/s)(5992KiB/73733msec) clat (usec): min=89, max=139146, avg=27032.21, stdev=16674.36 lat (usec): min=90, max=139148, avg=27034.54, stdev=16674.45 clat percentiles (usec): | 1.00th=[ 172], 5.00th=[ 8455], 10.00th=[ 11076], 20.00th=[ 14353], | 30.00th=[ 17171], 40.00th=[ 19792], 50.00th=[ 23462], 60.00th=[ 27919], | 70.00th=[ 32637], 80.00th=[ 38536], 90.00th=[ 46924], 95.00th=[ 55837], | 99.00th=[ 84411], 99.50th=[102237], 99.90th=[121111], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 31, max= 151, per=24.87%, avg=80.83, stdev=22.99, samples=146 iops : min= 7, max= 37, avg=19.66, stdev= 5.77, samples=146 write: IOPS=21, BW=85.4KiB/s (87.4kB/s)(6296KiB/73733msec); 0 zone resets clat (usec): min=710, max=698499, avg=20924.70, stdev=25979.99 lat (usec): min=711, max=698500, avg=20926.65, stdev=25979.83 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1303], 10.00th=[ 1762], 20.00th=[ 3064], | 30.00th=[ 5211], 40.00th=[ 11207], 50.00th=[ 15795], 60.00th=[ 20579], | 70.00th=[ 26084], 80.00th=[ 34866], 90.00th=[ 47449], 95.00th=[ 59507], | 99.00th=[ 84411], 99.50th=[ 99091], 99.90th=[143655], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 21, max= 190, per=24.98%, avg=84.95, stdev=29.74, samples=146 iops : min= 5, max= 47, avg=20.68, stdev= 7.46, samples=146 lat (usec) : 100=0.03%, 250=0.98%, 500=0.59%, 750=0.13%, 1000=0.55% lat (msec) : 2=6.18%, 4=6.25%, 10=8.82%, 20=26.33%, 50=41.67% lat (msec) : 100=7.98%, 250=0.46%, 750=0.03% cpu : usr=0.13%, sys=10.41%, ctx=7237, 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=186828: Thu Jan 1 22:24:57 2026 read: IOPS=20, BW=80.6KiB/s (82.5kB/s)(5940KiB/73698msec) clat (usec): min=85, max=110514, avg=26797.12, stdev=15111.33 lat (usec): min=86, max=110514, avg=26798.57, stdev=15111.42 clat percentiles (usec): | 1.00th=[ 169], 5.00th=[ 8848], 10.00th=[ 11338], 20.00th=[ 14353], | 30.00th=[ 17171], 40.00th=[ 20317], 50.00th=[ 23987], 60.00th=[ 28181], | 70.00th=[ 32375], 80.00th=[ 36963], 90.00th=[ 46400], 95.00th=[ 56361], | 99.00th=[ 71828], 99.50th=[ 81265], 99.90th=[102237], 99.95th=[110625], | 99.99th=[110625] bw ( KiB/s): min= 24, max= 151, per=24.71%, avg=80.30, stdev=21.65, samples=146 iops : min= 6, max= 37, avg=19.53, stdev= 5.44, samples=146 write: IOPS=21, BW=86.1KiB/s (88.2kB/s)(6348KiB/73698msec); 0 zone resets clat (usec): min=668, max=805889, avg=21164.35, stdev=28157.90 lat (usec): min=668, max=805891, avg=21166.49, stdev=28157.78 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1319], 10.00th=[ 1795], 20.00th=[ 2966], | 30.00th=[ 5080], 40.00th=[ 10945], 50.00th=[ 16057], 60.00th=[ 20579], | 70.00th=[ 26084], 80.00th=[ 34341], 90.00th=[ 47449], 95.00th=[ 58983], | 99.00th=[ 92799], 99.50th=[109577], 99.90th=[126354], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 23, max= 216, per=25.17%, avg=85.59, stdev=31.88, samples=146 iops : min= 5, max= 54, avg=20.86, stdev= 8.01, samples=146 lat (usec) : 100=0.07%, 250=0.75%, 500=0.33%, 750=0.10%, 1000=0.46% lat (msec) : 2=5.92%, 4=6.77%, 10=8.92%, 20=25.72%, 50=42.64% lat (msec) : 100=7.88%, 250=0.42%, 1000=0.03% cpu : usr=0.12%, sys=10.47%, ctx=7436, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=186829: Thu Jan 1 22:24:57 2026 read: IOPS=20, BW=82.7KiB/s (84.7kB/s)(6028KiB/72897msec) clat (usec): min=100, max=153014, avg=26575.50, stdev=16230.71 lat (usec): min=101, max=153016, avg=26576.97, stdev=16230.71 clat percentiles (usec): | 1.00th=[ 172], 5.00th=[ 7701], 10.00th=[ 11338], 20.00th=[ 14484], | 30.00th=[ 17171], 40.00th=[ 20055], 50.00th=[ 23462], 60.00th=[ 27132], | 70.00th=[ 31065], 80.00th=[ 37487], 90.00th=[ 46400], 95.00th=[ 55837], | 99.00th=[ 80217], 99.50th=[ 85459], 99.90th=[127402], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 16, max= 152, per=25.34%, avg=82.34, stdev=26.41, samples=144 iops : min= 4, max= 38, avg=20.03, stdev= 6.63, samples=144 write: IOPS=21, BW=85.9KiB/s (87.9kB/s)(6260KiB/72897msec); 0 zone resets clat (usec): min=644, max=795806, avg=20800.53, stdev=27474.72 lat (usec): min=645, max=795808, avg=20804.60, stdev=27473.27 clat percentiles (usec): | 1.00th=[ 955], 5.00th=[ 1303], 10.00th=[ 1680], 20.00th=[ 3032], | 30.00th=[ 5145], 40.00th=[ 10421], 50.00th=[ 15664], 60.00th=[ 20317], | 70.00th=[ 26346], 80.00th=[ 34866], 90.00th=[ 47973], 95.00th=[ 58983], | 99.00th=[ 82314], 99.50th=[ 94897], 99.90th=[122160], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 15, max= 151, per=25.07%, avg=85.23, stdev=27.11, samples=144 iops : min= 3, max= 37, avg=20.76, stdev= 6.77, samples=144 lat (usec) : 250=0.88%, 500=0.75%, 750=0.16%, 1000=0.65% lat (msec) : 2=6.02%, 4=6.22%, 10=8.76%, 20=26.43%, 50=42.15% lat (msec) : 100=7.62%, 250=0.33%, 1000=0.03% cpu : usr=0.12%, sys=10.61%, ctx=7341, 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=186830: Thu Jan 1 22:24:57 2026 read: IOPS=20, BW=83.1KiB/s (85.1kB/s)(6052KiB/72845msec) clat (usec): min=111, max=837932, avg=27006.19, stdev=26676.64 lat (usec): min=112, max=837933, avg=27007.79, stdev=26676.67 clat percentiles (usec): | 1.00th=[ 180], 5.00th=[ 7832], 10.00th=[ 10683], 20.00th=[ 14091], | 30.00th=[ 17171], 40.00th=[ 19792], 50.00th=[ 23200], 60.00th=[ 26608], | 70.00th=[ 31327], 80.00th=[ 36963], 90.00th=[ 44827], 95.00th=[ 55313], | 99.00th=[ 94897], 99.50th=[103285], 99.90th=[131597], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 21, max= 151, per=25.47%, avg=82.79, stdev=24.47, samples=144 iops : min= 5, max= 37, avg=20.15, stdev= 6.12, samples=144 write: IOPS=21, BW=85.6KiB/s (87.7kB/s)(6236KiB/72845msec); 0 zone resets clat (usec): min=678, max=135984, avg=20334.81, stdev=19388.74 lat (usec): min=679, max=135985, avg=20336.89, stdev=19389.31 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1319], 10.00th=[ 1811], 20.00th=[ 2900], | 30.00th=[ 4817], 40.00th=[ 9896], 50.00th=[ 15139], 60.00th=[ 20055], | 70.00th=[ 26870], 80.00th=[ 36439], 90.00th=[ 48497], 95.00th=[ 58983], | 99.00th=[ 78119], 99.50th=[ 86508], 99.90th=[108528], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 24, max= 158, per=25.03%, avg=85.09, stdev=26.89, samples=144 iops : min= 6, max= 39, avg=20.73, stdev= 6.75, samples=144 lat (usec) : 250=0.91%, 500=0.65%, 750=0.23%, 1000=0.42% lat (msec) : 2=6.02%, 4=6.97%, 10=9.18%, 20=26.20%, 50=41.24% lat (msec) : 100=7.78%, 250=0.36%, 1000=0.03% cpu : usr=0.12%, sys=10.52%, ctx=7220, 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=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=326KiB/s (333kB/s), 80.6KiB/s-83.1KiB/s (82.5kB/s-85.1kB/s), io=23.4MiB (24.6MB), run=72845-73733msec WRITE: bw=341KiB/s (349kB/s), 85.4KiB/s-86.1KiB/s (87.4kB/s-88.2kB/s), io=24.6MiB (25.7MB), run=72845-73733msec rand-rw: (groupid=0, jobs=1): err= 0: pid=186832: Thu Jan 1 22:25:20 2026 read: IOPS=15, BW=61.0KiB/s (63.5kB/s)(5992KiB/96654msec) clat (msec): min=4, max=729, avg=26.21, stdev=28.34 lat (msec): min=4, max=729, avg=26.21, stdev=28.34 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 55], 95.00th=[ 74], | 99.00th=[ 109], 99.50th=[ 134], 99.90th=[ 155], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 15, max= 184, per=25.20%, avg=62.51, stdev=35.83, samples=188 iops : min= 3, max= 46, avg=15.10, stdev= 8.99, samples=188 write: IOPS=16, BW=65.1KiB/s (66.7kB/s)(6296KiB/96654msec); 0 zone resets clat (msec): min=6, max=177, avg=36.40, stdev=24.02 lat (msec): min=6, max=177, avg=36.40, stdev=24.02 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 69], 95.00th=[ 84], | 99.00th=[ 114], 99.50th=[ 153], 99.90th=[ 171], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 7, max= 175, per=25.09%, avg=64.99, stdev=34.69, samples=190 iops : min= 1, max= 43, avg=15.72, stdev= 8.70, samples=190 lat (msec) : 10=8.98%, 20=31.48%, 50=42.25%, 100=15.46%, 250=1.79% lat (msec) : 750=0.03% cpu : usr=0.09%, sys=3.88%, ctx=5014, 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=186833: Thu Jan 1 22:25:20 2026 read: IOPS=15, BW=61.4KiB/s (62.8kB/s)(5940KiB/96816msec) clat (msec): min=4, max=836, avg=25.96, stdev=30.18 lat (msec): min=4, max=836, avg=25.96, stdev=30.18 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 56], 95.00th=[ 70], | 99.00th=[ 108], 99.50th=[ 127], 99.90th=[ 163], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 15, max= 191, per=24.86%, avg=61.66, stdev=36.45, samples=190 iops : min= 3, max= 47, avg=14.88, stdev= 9.12, samples=190 write: IOPS=16, BW=65.6KiB/s (67.1kB/s)(6348KiB/96816msec); 0 zone resets clat (msec): min=8, max=205, avg=36.64, stdev=24.10 lat (msec): min=8, max=205, avg=36.64, stdev=24.10 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 53], 90.00th=[ 69], 95.00th=[ 85], | 99.00th=[ 122], 99.50th=[ 136], 99.90th=[ 169], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 15, max= 184, per=25.27%, avg=65.44, stdev=33.67, samples=191 iops : min= 3, max= 46, avg=15.83, stdev= 8.45, samples=191 lat (msec) : 10=9.51%, 20=30.89%, 50=42.06%, 100=15.46%, 250=2.05% lat (msec) : 1000=0.03% cpu : usr=0.09%, sys=3.88%, ctx=4951, 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=186834: Thu Jan 1 22:25:20 2026 read: IOPS=15, BW=62.5KiB/s (63.0kB/s)(6028KiB/96475msec) clat (msec): min=3, max=159, avg=25.57, stdev=21.14 lat (msec): min=3, max=159, avg=25.57, stdev=21.14 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 37], 90.00th=[ 54], 95.00th=[ 70], | 99.00th=[ 97], 99.50th=[ 113], 99.90th=[ 150], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 7, max= 207, per=25.18%, avg=62.46, stdev=36.57, samples=190 iops : min= 1, max= 51, avg=15.09, stdev= 9.17, samples=190 write: IOPS=16, BW=64.9KiB/s (66.4kB/s)(6260KiB/96475msec); 0 zone resets clat (msec): min=6, max=845, avg=36.96, stdev=31.92 lat (msec): min=6, max=845, avg=36.97, stdev=31.92 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 69], 95.00th=[ 83], | 99.00th=[ 131], 99.50th=[ 148], 99.90th=[ 207], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 183, per=25.03%, avg=64.82, stdev=35.63, samples=190 iops : min= 1, max= 45, avg=15.68, stdev= 8.93, samples=190 lat (msec) : 4=0.07%, 10=9.38%, 20=31.93%, 50=41.08%, 100=15.59% lat (msec) : 250=1.92%, 1000=0.03% cpu : usr=0.09%, sys=3.84%, ctx=4908, 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=186835: Thu Jan 1 22:25:20 2026 read: IOPS=15, BW=62.7KiB/s (64.3kB/s)(6052KiB/96448msec) clat (msec): min=4, max=165, avg=25.43, stdev=20.52 lat (msec): min=4, max=165, avg=25.43, stdev=20.52 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 53], 95.00th=[ 68], | 99.00th=[ 97], 99.50th=[ 113], 99.90th=[ 157], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 15, max= 183, per=25.57%, avg=63.43, stdev=35.79, samples=188 iops : min= 3, max= 45, avg=15.33, stdev= 8.96, samples=188 write: IOPS=16, BW=64.7KiB/s (66.2kB/s)(6236KiB/96448msec); 0 zone resets clat (msec): min=7, max=852, avg=37.12, stdev=31.74 lat (msec): min=7, max=852, avg=37.12, stdev=31.74 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 54], 90.00th=[ 70], 95.00th=[ 84], | 99.00th=[ 124], 99.50th=[ 150], 99.90th=[ 192], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 15, max= 184, per=24.95%, avg=64.62, stdev=33.73, samples=190 iops : min= 3, max= 46, avg=15.63, stdev= 8.46, samples=190 lat (msec) : 10=8.46%, 20=32.62%, 50=41.70%, 100=15.66%, 250=1.53% lat (msec) : 1000=0.03% cpu : usr=0.09%, sys=3.96%, ctx=4956, 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=248KiB/s (254kB/s), 61.4KiB/s-62.7KiB/s (62.8kB/s-64.3kB/s), io=23.4MiB (24.6MB), run=96448-96816msec WRITE: bw=260KiB/s (266kB/s), 64.7KiB/s-65.6KiB/s (66.2kB/s-67.1kB/s), io=24.6MiB (25.7MB), run=96448-96816msec 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=186862: Thu Jan 1 22:25:46 2026 read: IOPS=18, BW=293KiB/s (300kB/s)(5920KiB/20239msec) clat (usec): min=107, max=103318, avg=27235.23, stdev=16303.19 lat (usec): min=107, max=103319, avg=27242.08, stdev=16304.90 clat percentiles (usec): | 1.00th=[ 145], 5.00th=[ 351], 10.00th=[ 10290], 20.00th=[ 14615], | 30.00th=[ 17957], 40.00th=[ 21103], 50.00th=[ 25035], 60.00th=[ 29492], | 70.00th=[ 33817], 80.00th=[ 39060], 90.00th=[ 46924], 95.00th=[ 56886], | 99.00th=[ 79168], 99.50th=[ 92799], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 95, max= 606, per=24.73%, avg=292.55, stdev=92.76, samples=40 iops : min= 5, max= 37, avg=17.65, stdev= 5.79, samples=40 write: IOPS=19, BW=315KiB/s (322kB/s)(6368KiB/20239msec); 0 zone resets clat (usec): min=1306, max=103946, avg=25025.54, stdev=21025.51 lat (usec): min=1308, max=103949, avg=25028.72, stdev=21024.95 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 2040], 10.00th=[ 3261], 20.00th=[ 6194], | 30.00th=[ 10421], 40.00th=[ 15795], 50.00th=[ 20055], 60.00th=[ 25297], | 70.00th=[ 32113], 80.00th=[ 40109], 90.00th=[ 53740], 95.00th=[ 68682], | 99.00th=[ 94897], 99.50th=[101188], 99.90th=[104334], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 127, max= 512, per=25.27%, avg=314.65, stdev=94.51, samples=40 iops : min= 7, max= 32, avg=19.03, stdev= 6.07, samples=40 lat (usec) : 250=1.43%, 500=1.43%, 750=0.26% lat (msec) : 2=2.47%, 4=4.56%, 10=9.77%, 20=23.05%, 50=46.74% lat (msec) : 100=9.90%, 250=0.39% cpu : usr=0.10%, sys=11.85%, ctx=2104, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=186863: Thu Jan 1 22:25:46 2026 read: IOPS=18, BW=298KiB/s (305kB/s)(5744KiB/19256msec) clat (usec): min=83, max=101748, avg=27327.60, stdev=17144.94 lat (usec): min=84, max=101749, avg=27328.69, stdev=17144.95 clat percentiles (usec): | 1.00th=[ 165], 5.00th=[ 396], 10.00th=[ 9896], 20.00th=[ 14484], | 30.00th=[ 17695], 40.00th=[ 21627], 50.00th=[ 24773], 60.00th=[ 28443], | 70.00th=[ 32637], 80.00th=[ 38011], 90.00th=[ 49021], 95.00th=[ 61604], | 99.00th=[ 81265], 99.50th=[100140], 99.90th=[102237], 99.95th=[102237], | 99.99th=[102237] bw ( KiB/s): min= 127, max= 504, per=25.29%, avg=299.21, stdev=89.86, samples=38 iops : min= 7, max= 31, avg=18.08, stdev= 5.66, samples=38 write: IOPS=21, BW=340KiB/s (348kB/s)(6544KiB/19256msec); 0 zone resets clat (usec): min=1243, max=143604, avg=22843.62, stdev=21853.70 lat (usec): min=1245, max=143607, avg=22845.91, stdev=21853.60 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2376], 10.00th=[ 3097], 20.00th=[ 4883], | 30.00th=[ 7308], 40.00th=[ 11600], 50.00th=[ 16319], 60.00th=[ 20841], | 70.00th=[ 28443], 80.00th=[ 38011], 90.00th=[ 52691], 95.00th=[ 66323], | 99.00th=[ 95945], 99.50th=[106431], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 95, max= 576, per=27.27%, avg=339.50, stdev=120.53, samples=38 iops : min= 5, max= 36, avg=20.61, stdev= 7.57, samples=38 lat (usec) : 100=0.13%, 250=1.30%, 500=1.17%, 750=1.04% lat (msec) : 2=1.56%, 4=6.77%, 10=11.85%, 20=23.83%, 50=42.06% lat (msec) : 100=9.64%, 250=0.65% cpu : usr=0.14%, sys=12.14%, ctx=2027, 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=186864: Thu Jan 1 22:25:46 2026 read: IOPS=19, BW=310KiB/s (317kB/s)(6256KiB/20192msec) clat (usec): min=113, max=141210, avg=28614.41, stdev=20308.25 lat (usec): min=114, max=141212, avg=28621.86, stdev=20309.01 clat percentiles (usec): | 1.00th=[ 182], 5.00th=[ 816], 10.00th=[ 9896], 20.00th=[ 14484], | 30.00th=[ 17957], 40.00th=[ 20317], 50.00th=[ 23987], 60.00th=[ 29230], | 70.00th=[ 33817], 80.00th=[ 39584], 90.00th=[ 49021], 95.00th=[ 66323], | 99.00th=[106431], 99.50th=[141558], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 126, max= 542, per=26.04%, avg=308.05, stdev=94.75, samples=39 iops : min= 7, max= 33, avg=18.64, stdev= 6.03, samples=39 write: IOPS=18, BW=299KiB/s (306kB/s)(6032KiB/20192msec); 0 zone resets clat (usec): min=1629, max=126339, avg=23571.57, stdev=20159.86 lat (usec): min=1631, max=126343, avg=23573.90, stdev=20159.76 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2278], 10.00th=[ 3621], 20.00th=[ 5866], | 30.00th=[ 9634], 40.00th=[ 13173], 50.00th=[ 17957], 60.00th=[ 24249], | 70.00th=[ 30016], 80.00th=[ 38536], 90.00th=[ 51643], 95.00th=[ 63177], | 99.00th=[ 84411], 99.50th=[122160], 99.90th=[126354], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 94, max= 510, per=23.52%, avg=292.85, stdev=90.70, samples=39 iops : min= 5, max= 31, avg=17.67, stdev= 5.74, samples=39 lat (usec) : 250=1.17%, 500=0.78%, 750=0.39%, 1000=0.26% lat (msec) : 2=1.69%, 4=4.82%, 10=11.72%, 20=25.13%, 50=44.01% lat (msec) : 100=9.24%, 250=0.78% cpu : usr=0.10%, sys=11.54%, ctx=2135, 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=186865: Thu Jan 1 22:25:46 2026 read: IOPS=19, BW=306KiB/s (314kB/s)(6032KiB/19696msec) clat (usec): min=144, max=126651, avg=27161.87, stdev=18381.36 lat (usec): min=144, max=126653, avg=27163.15, stdev=18381.21 clat percentiles (usec): | 1.00th=[ 159], 5.00th=[ 277], 10.00th=[ 9110], 20.00th=[ 14353], | 30.00th=[ 17695], 40.00th=[ 21103], 50.00th=[ 24249], 60.00th=[ 28181], | 70.00th=[ 32113], 80.00th=[ 38011], 90.00th=[ 50070], 95.00th=[ 58983], | 99.00th=[ 99091], 99.50th=[119014], 99.90th=[126354], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 63, max= 480, per=25.42%, avg=300.71, stdev=106.84, samples=38 iops : min= 3, max= 30, avg=18.16, stdev= 6.73, samples=38 write: IOPS=19, BW=318KiB/s (325kB/s)(6256KiB/19696msec); 0 zone resets clat (usec): min=1136, max=129791, avg=24042.38, stdev=20513.68 lat (usec): min=1138, max=129792, avg=24057.41, stdev=20516.21 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2540], 10.00th=[ 3556], 20.00th=[ 5276], | 30.00th=[ 8848], 40.00th=[ 14353], 50.00th=[ 19006], 60.00th=[ 24773], | 70.00th=[ 30802], 80.00th=[ 39060], 90.00th=[ 52167], 95.00th=[ 64750], | 99.00th=[ 88605], 99.50th=[104334], 99.90th=[129500], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 95, max= 541, per=25.22%, avg=314.00, stdev=92.81, samples=38 iops : min= 5, max= 33, avg=19.00, stdev= 5.76, samples=38 lat (usec) : 250=2.21%, 500=1.82%, 750=0.65% lat (msec) : 2=1.56%, 4=4.95%, 10=10.55%, 20=22.53%, 50=44.92% lat (msec) : 100=10.16%, 250=0.65% cpu : usr=0.18%, sys=11.92%, ctx=2097, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1183KiB/s (1212kB/s), 293KiB/s-310KiB/s (300kB/s-317kB/s), io=23.4MiB (24.5MB), run=19256-20239msec WRITE: bw=1245KiB/s (1275kB/s), 299KiB/s-340KiB/s (306kB/s-348kB/s), io=24.6MiB (25.8MB), run=19256-20239msec rand-rw: (groupid=0, jobs=1): err= 0: pid=186867: Thu Jan 1 22:25:51 2026 read: IOPS=14, BW=234KiB/s (240kB/s)(5920KiB/25266msec) clat (msec): min=5, max=166, avg=27.36, stdev=24.39 lat (msec): min=5, max=166, avg=27.36, stdev=24.39 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 61], 95.00th=[ 83], | 99.00th=[ 114], 99.50th=[ 155], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 31, max= 608, per=24.13%, avg=226.59, stdev=123.66, samples=49 iops : min= 1, max= 38, avg=13.51, stdev= 7.88, samples=49 write: IOPS=15, BW=252KiB/s (258kB/s)(6368KiB/25266msec); 0 zone resets clat (msec): min=7, max=142, avg=37.78, stdev=22.00 lat (msec): min=7, max=142, avg=37.79, stdev=22.00 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 47], 80.00th=[ 55], 90.00th=[ 69], 95.00th=[ 79], | 99.00th=[ 112], 99.50th=[ 138], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 64, max= 574, per=25.14%, avg=248.37, stdev=117.82, samples=49 iops : min= 4, max= 35, avg=14.88, stdev= 7.39, samples=49 lat (msec) : 10=6.77%, 20=30.08%, 50=42.84%, 100=18.10%, 250=2.21% cpu : usr=0.11%, sys=4.34%, ctx=1310, 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=186868: Thu Jan 1 22:25:51 2026 read: IOPS=14, BW=227KiB/s (233kB/s)(5744KiB/25251msec) clat (msec): min=5, max=152, avg=26.21, stdev=21.09 lat (msec): min=5, max=152, avg=26.21, stdev=21.09 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 59], 95.00th=[ 78], | 99.00th=[ 91], 99.50th=[ 106], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 63, max= 576, per=24.35%, avg=228.62, stdev=123.73, samples=48 iops : min= 3, max= 36, avg=13.65, stdev= 7.84, samples=48 write: IOPS=16, BW=259KiB/s (265kB/s)(6544KiB/25251msec); 0 zone resets clat (msec): min=9, max=214, avg=38.37, stdev=26.83 lat (msec): min=9, max=214, avg=38.38, stdev=26.83 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 58], 90.00th=[ 71], 95.00th=[ 89], | 99.00th=[ 144], 99.50th=[ 144], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 32, max= 608, per=25.55%, avg=252.45, stdev=129.95, samples=49 iops : min= 2, max= 38, avg=15.14, stdev= 8.21, samples=49 lat (msec) : 10=6.25%, 20=30.34%, 50=43.88%, 100=17.58%, 250=1.95% cpu : usr=0.11%, sys=3.99%, ctx=1308, 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=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=186869: Thu Jan 1 22:25:51 2026 read: IOPS=15, BW=246KiB/s (252kB/s)(6256KiB/25423msec) clat (msec): min=5, max=182, avg=27.41, stdev=25.06 lat (msec): min=5, max=182, avg=27.41, stdev=25.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 64], 95.00th=[ 82], | 99.00th=[ 115], 99.50th=[ 150], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 63, max= 766, per=26.20%, avg=246.04, stdev=164.79, samples=50 iops : min= 3, max= 47, avg=14.74, stdev=10.42, samples=50 write: IOPS=14, BW=237KiB/s (243kB/s)(6032KiB/25423msec); 0 zone resets clat (msec): min=7, max=173, avg=38.83, stdev=27.05 lat (msec): min=7, max=173, avg=38.83, stdev=27.05 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 57], 90.00th=[ 75], 95.00th=[ 86], | 99.00th=[ 146], 99.50th=[ 150], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 63, max= 608, per=23.59%, avg=233.02, stdev=131.47, samples=50 iops : min= 3, max= 38, avg=13.94, stdev= 8.37, samples=50 lat (msec) : 10=7.94%, 20=35.16%, 50=36.46%, 100=17.84%, 250=2.60% cpu : usr=0.08%, sys=4.21%, ctx=1278, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=186870: Thu Jan 1 22:25:51 2026 read: IOPS=14, BW=237KiB/s (242kB/s)(6032KiB/25486msec) clat (msec): min=4, max=116, avg=27.12, stdev=22.66 lat (msec): min=4, max=116, avg=27.12, stdev=22.66 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 63], 95.00th=[ 81], | 99.00th=[ 106], 99.50th=[ 110], 99.90th=[ 116], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 62, max= 800, per=24.64%, avg=231.38, stdev=142.82, samples=50 iops : min= 3, max= 50, avg=13.82, stdev= 9.05, samples=50 write: IOPS=15, BW=245KiB/s (251kB/s)(6256KiB/25486msec); 0 zone resets clat (msec): min=8, max=220, avg=38.62, stdev=28.85 lat (msec): min=8, max=220, avg=38.62, stdev=28.85 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 75], 95.00th=[ 90], | 99.00th=[ 155], 99.50th=[ 174], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 95, max= 542, per=24.44%, avg=241.48, stdev=131.63, samples=50 iops : min= 5, max= 33, avg=14.46, stdev= 8.33, samples=50 lat (msec) : 10=8.85%, 20=33.20%, 50=37.37%, 100=18.36%, 250=2.21% cpu : usr=0.13%, sys=4.00%, ctx=1300, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=940KiB/s (962kB/s), 227KiB/s-246KiB/s (233kB/s-252kB/s), io=23.4MiB (24.5MB), run=25251-25486msec WRITE: bw=989KiB/s (1013kB/s), 237KiB/s-259KiB/s (243kB/s-265kB/s), io=24.6MiB (25.8MB), run=25251-25486msec 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=186879: Thu Jan 1 22:26:03 2026 read: IOPS=1, BW=1620KiB/s (1658kB/s)(7168KiB/4426msec) clat (usec): min=1039, max=1136.4k, avg=273226.86, stdev=395515.74 lat (usec): min=1042, max=1136.4k, avg=273228.97, stdev=395515.90 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1037], 10.00th=[ 1037], | 20.00th=[ 1057], 30.00th=[ 111674], 40.00th=[ 111674], | 50.00th=[ 154141], 60.00th=[ 206570], 70.00th=[ 206570], | 80.00th=[ 299893], 90.00th=[1132463], 95.00th=[1132463], | 99.00th=[1132463], 99.50th=[1132463], 99.90th=[1132463], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 1976, max= 4039, per=67.14%, avg=2710.25, stdev=957.06, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1157KiB/s (1185kB/s)(5120KiB/4426msec); 0 zone resets clat (msec): min=277, max=1201, avg=488.02, stdev=399.53 lat (msec): min=277, max=1201, avg=488.08, stdev=399.53 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 338], 80.00th=[ 338], 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= 1965, max= 4039, per=47.06%, avg=2660.00, stdev=1194.26, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=16.67%, 250=25.00%, 500=41.67%, 2000=16.67% cpu : usr=0.00%, sys=20.05%, ctx=583, 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=186880: Thu Jan 1 22:26:03 2026 read: IOPS=0, BW=404KiB/s (413kB/s)(2048KiB/5072msec) clat (usec): min=972, max=2101.5k, avg=1051243.09, stdev=1485306.80 lat (usec): min=973, max=2101.5k, avg=1051245.42, stdev=1485308.15 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 971], 10.00th=[ 971], | 20.00th=[ 971], 30.00th=[ 971], 40.00th=[ 971], | 50.00th=[ 971], 60.00th=[2105541], 70.00th=[2105541], | 80.00th=[2105541], 90.00th=[2105541], 95.00th=[2105541], | 99.00th=[2105541], 99.50th=[2105541], 99.90th=[2105541], | 99.95th=[2105541], 99.99th=[2105541] bw ( KiB/s): min= 1976, max= 2035, per=49.68%, avg=2005.50, stdev=41.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2019KiB/s (2067kB/s)(10.0MiB/5072msec); 0 zone resets clat (msec): min=109, max=858, avg=284.62, stdev=221.91 lat (msec): min=109, max=858, avg=284.73, stdev=221.89 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 163], 50.00th=[ 207], 60.00th=[ 230], | 70.00th=[ 234], 80.00th=[ 334], 90.00th=[ 418], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 2035, max= 3992, per=53.18%, avg=3005.75, stdev=1116.43, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 1000=8.33% lat (msec) : 250=58.33%, 500=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=23.68%, ctx=631, 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=186882: Thu Jan 1 22:26:03 2026 read: IOPS=1, BW=1446KiB/s (1481kB/s)(6144KiB/4249msec) clat (msec): min=104, max=1282, avg=344.49, stdev=461.61 lat (msec): min=104, max=1282, avg=344.49, stdev=461.61 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 122], | 30.00th=[ 122], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 209], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 2019, max= 4096, per=83.64%, avg=3376.67, stdev=1176.47, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1446KiB/s (1481kB/s)(6144KiB/4249msec); 0 zone resets clat (msec): min=106, max=884, avg=358.73, stdev=283.53 lat (msec): min=106, max=884, avg=358.82, stdev=283.52 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 226], 50.00th=[ 226], 60.00th=[ 342], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 2019, max= 4096, per=52.41%, avg=2962.00, stdev=1051.59, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 250=66.67%, 500=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=17.18%, ctx=309, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=186883: Thu Jan 1 22:26:03 2026 read: IOPS=1, BW=1327KiB/s (1359kB/s)(5120KiB/3857msec) clat (usec): min=553, max=231735, avg=85430.23, stdev=116712.69 lat (usec): min=553, max=231736, avg=85431.38, stdev=116713.09 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 553], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 1106], 60.00th=[ 1106], | 70.00th=[193987], 80.00th=[193987], 90.00th=[231736], 95.00th=[231736], | 99.00th=[231736], 99.50th=[231736], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1858KiB/s (1903kB/s)(7168KiB/3857msec); 0 zone resets clat (msec): min=161, max=1785, avg=477.01, stdev=584.35 lat (msec): min=161, max=1785, avg=477.08, stdev=584.36 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 174], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 255], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 435], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 2007, max= 4039, per=56.86%, avg=3214.00, stdev=959.46, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 250=41.67%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=23.11%, 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=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=4038KiB/s (4135kB/s), 404KiB/s-1620KiB/s (413kB/s-1658kB/s), io=20.0MiB (20.0MB), run=3857-5072msec WRITE: bw=5653KiB/s (5789kB/s), 1157KiB/s-2019KiB/s (1185kB/s-2067kB/s), io=28.0MiB (29.4MB), run=3857-5072msec rand-rw: (groupid=0, jobs=1): err= 0: pid=186884: Thu Jan 1 22:26:03 2026 read: IOPS=1, BW=1460KiB/s (1495kB/s)(7168KiB/4909msec) clat (msec): min=46, max=624, avg=248.52, stdev=215.54 lat (msec): min=46, max=624, avg=248.52, stdev=215.54 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 77], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 184], 60.00th=[ 218], | 70.00th=[ 218], 80.00th=[ 464], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1957, max= 3915, per=63.83%, avg=2490.75, stdev=950.42, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1043KiB/s (1068kB/s)(5120KiB/4909msec); 0 zone resets clat (msec): min=136, max=1487, avg=554.99, stdev=600.77 lat (msec): min=136, max=1487, avg=555.08, stdev=600.77 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 1957, max= 3864, per=53.28%, avg=2910.50, stdev=1348.45, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 50=8.33%, 100=8.33%, 250=50.00%, 500=8.33%, 750=8.33% lat (msec) : 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=9.84%, ctx=129, 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=186885: Thu Jan 1 22:26:03 2026 read: IOPS=0, BW=390KiB/s (400kB/s)(2048KiB/5248msec) clat (msec): min=79, max=2252, avg=1165.88, stdev=1536.86 lat (msec): min=79, max=2252, avg=1165.88, stdev=1536.86 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 80], 60.00th=[ 2265], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 1932, max= 2048, per=51.00%, avg=1990.00, stdev=82.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1951KiB/s (1998kB/s)(10.0MiB/5248msec); 0 zone resets clat (msec): min=85, max=780, avg=288.06, stdev=199.39 lat (msec): min=85, max=780, avg=288.15, stdev=199.38 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 109], | 30.00th=[ 136], 40.00th=[ 230], 50.00th=[ 239], 60.00th=[ 255], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 359], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1903, max= 6119, per=65.61%, avg=3584.40, stdev=1748.04, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=11.19%, ctx=226, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=186886: Thu Jan 1 22:26:03 2026 read: IOPS=1, BW=1278KiB/s (1309kB/s)(6144KiB/4808msec) clat (msec): min=63, max=473, avg=190.65, stdev=151.68 lat (msec): min=63, max=473, avg=190.65, stdev=151.68 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 102], | 30.00th=[ 102], 40.00th=[ 103], 50.00th=[ 103], 60.00th=[ 163], | 70.00th=[ 243], 80.00th=[ 243], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 1903, max= 3915, per=82.71%, avg=3227.33, stdev=1147.19, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1278KiB/s (1309kB/s)(6144KiB/4808msec); 0 zone resets clat (msec): min=105, max=2036, avg=562.01, stdev=733.37 lat (msec): min=105, max=2037, avg=562.15, stdev=733.35 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 309], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 1903, max= 4079, per=45.59%, avg=2490.50, stdev=1060.85, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.05%, ctx=100, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=186887: Thu Jan 1 22:26:03 2026 read: IOPS=0, BW=1007KiB/s (1031kB/s)(5120KiB/5086msec) clat (msec): min=33, max=356, avg=157.49, stdev=133.35 lat (msec): min=33, max=356, avg=157.49, stdev=133.35 clat percentiles (msec): | 1.00th=[ 34], 5.00th=[ 34], 10.00th=[ 34], 20.00th=[ 34], | 30.00th=[ 70], 40.00th=[ 70], 50.00th=[ 101], 60.00th=[ 101], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 3806, max= 3864, per=98.28%, avg=3835.00, stdev=41.01, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1409KiB/s (1443kB/s)(7168KiB/5086msec); 0 zone resets clat (msec): min=90, max=2196, avg=596.99, stdev=722.67 lat (msec): min=90, max=2196, avg=597.07, stdev=722.67 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 247], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 300], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 575], 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= 1903, max= 2048, per=36.37%, avg=1986.75, stdev=69.24, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 50=8.33%, 100=25.00%, 250=16.67%, 500=33.33%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=7.83%, ctx=105, 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=3902KiB/s (3996kB/s), 390KiB/s-1460KiB/s (400kB/s-1495kB/s), io=20.0MiB (20.0MB), run=4808-5248msec WRITE: bw=5463KiB/s (5595kB/s), 1043KiB/s-1951KiB/s (1068kB/s-1998kB/s), io=28.0MiB (29.4MB), run=4808-5248msec 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=186898: Thu Jan 1 22:26:13 2026 read: IOPS=1, BW=6606KiB/s (6765kB/s)(12.0MiB/1860msec) clat (msec): min=498, max=717, avg=619.00, stdev=111.47 lat (msec): min=498, max=717, avg=619.01, stdev=111.47 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.05%, sys=31.68%, ctx=650, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=186899: Thu Jan 1 22:26:13 2026 read: IOPS=0, BW=1730KiB/s (1771kB/s)(4096KiB/2368msec) clat (nsec): min=618479k, max=618479k, avg=618479435.00, stdev= 0.00 lat (nsec): min=618483k, max=618483k, avg=618482632.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 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 write: IOPS=0, BW=3459KiB/s (3542kB/s)(8192KiB/2368msec); 0 zone resets clat (msec): min=837, max=908, avg=872.66, stdev=50.11 lat (msec): min=837, max=908, avg=873.16, stdev=50.13 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 911], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 8143, max= 8143, per=60.44%, 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=0.08%, sys=11.83%, ctx=260, 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=186900: Thu Jan 1 22:26:13 2026 write: IOPS=1, BW=5053KiB/s (5174kB/s)(12.0MiB/2432msec); 0 zone resets clat (msec): min=165, max=1465, avg=808.77, stdev=650.10 lat (msec): min=166, max=1466, avg=809.51, stdev=650.06 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8143, max= 8143, per=60.44%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.53%, ctx=45, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=186901: Thu Jan 1 22:26:13 2026 write: IOPS=1, BW=5461KiB/s (5592kB/s)(12.0MiB/2250msec); 0 zone resets clat (msec): min=267, max=1453, avg=748.16, stdev=624.02 lat (msec): min=267, max=1456, avg=749.42, stdev=625.24 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 6918, max= 8192, per=56.08%, avg=7555.00, stdev=900.85, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=9.92%, ctx=54, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6919KiB/s (7085kB/s), 1730KiB/s-6606KiB/s (1771kB/s-6765kB/s), io=16.0MiB (16.8MB), run=1860-2368msec WRITE: bw=13.2MiB/s (13.8MB/s), 3459KiB/s-5461KiB/s (3542kB/s-5592kB/s), io=32.0MiB (33.6MB), run=2250-2432msec rand-rw: (groupid=0, jobs=1): err= 0: pid=186893: Thu Jan 1 22:26:13 2026 read: IOPS=1, BW=5488KiB/s (5620kB/s)(12.0MiB/2239msec) clat (msec): min=462, max=1261, avg=743.92, stdev=449.17 lat (msec): min=462, max=1261, avg=743.92, stdev=449.17 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 6177, max= 8175, per=100.00%, avg=7176.00, stdev=1412.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.46%, ctx=68, 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=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=186894: Thu Jan 1 22:26:13 2026 read: IOPS=0, BW=1432KiB/s (1466kB/s)(4096KiB/2861msec) clat (nsec): min=1041.7M, max=1041.7M, avg=1041650201.00, stdev= 0.00 lat (nsec): min=1041.7M, max=1041.7M, avg=1041652896.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1045], 5.00th=[ 1045], 10.00th=[ 1045], 20.00th=[ 1045], | 30.00th=[ 1045], 40.00th=[ 1045], 50.00th=[ 1045], 60.00th=[ 1045], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] 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=2863KiB/s (2932kB/s)(8192KiB/2861msec); 0 zone resets clat (msec): min=300, max=1449, avg=875.10, stdev=812.67 lat (msec): min=300, max=1450, avg=875.54, stdev=812.77 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 1452], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8175, max= 8175, per=71.38%, 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%, 2000=66.67% cpu : usr=0.07%, sys=6.71%, ctx=87, 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=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=186895: Thu Jan 1 22:26:13 2026 write: IOPS=2, BW=8641KiB/s (8849kB/s)(12.0MiB/1422msec); 0 zone resets clat (msec): min=161, max=890, avg=449.25, stdev=387.83 lat (msec): min=162, max=891, avg=460.05, stdev=382.22 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 296], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min=11570, max=11570, per=100.00%, avg=11570.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=16.68%, ctx=68, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=186896: Thu Jan 1 22:26:13 2026 write: IOPS=1, BW=5953KiB/s (6096kB/s)(12.0MiB/2064msec); 0 zone resets clat (msec): min=203, max=936, avg=680.63, stdev=413.54 lat (msec): min=203, max=937, avg=681.17, stdev=413.83 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 6068, max= 8126, per=61.97%, avg=7097.00, stdev=1455.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.00%, sys=11.29%, ctx=76, 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=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=5727KiB/s (5864kB/s), 1432KiB/s-5488KiB/s (1466kB/s-5620kB/s), io=16.0MiB (16.8MB), run=2239-2861msec WRITE: bw=11.2MiB/s (11.7MB/s), 2863KiB/s-8641KiB/s (2932kB/s-8849kB/s), io=32.0MiB (33.6MB), run=1422-2861msec