== sanity test 398b: DIO and buffer IO race ============== 21:42:33 (1787103753) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.81337 s, 17.9 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=189649: Tue Aug 18 21:43:37 2026 read: IOPS=27, BW=109KiB/s (112kB/s)(5992KiB/54859msec) clat (usec): min=45, max=636949, avg=19723.80, stdev=18933.47 lat (usec): min=47, max=636950, avg=19724.76, stdev=18933.50 clat percentiles (usec): | 1.00th=[ 115], 5.00th=[ 7439], 10.00th=[ 8848], 20.00th=[ 11076], | 30.00th=[ 13173], 40.00th=[ 15664], 50.00th=[ 17695], 60.00th=[ 19792], | 70.00th=[ 22414], 80.00th=[ 26084], 90.00th=[ 32900], 95.00th=[ 38011], | 99.00th=[ 50594], 99.50th=[ 55837], 99.90th=[100140], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 6, max= 176, per=24.95%, avg=109.04, stdev=31.33, samples=109 iops : min= 1, max= 44, avg=26.82, stdev= 7.88, samples=109 write: IOPS=28, BW=115KiB/s (118kB/s)(6296KiB/54859msec); 0 zone resets clat (usec): min=715, max=74768, avg=15978.05, stdev=12449.90 lat (usec): min=715, max=74770, avg=15980.24, stdev=12450.36 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 2704], 10.00th=[ 3163], 20.00th=[ 4883], | 30.00th=[ 7504], 40.00th=[10421], 50.00th=[12649], 60.00th=[16057], | 70.00th=[19792], 80.00th=[25297], 90.00th=[33424], 95.00th=[40633], | 99.00th=[54789], 99.50th=[65274], 99.90th=[72877], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 47, max= 199, per=25.28%, avg=115.53, stdev=32.97, samples=108 iops : min= 11, max= 49, avg=28.44, stdev= 8.29, samples=108 lat (usec) : 50=0.03%, 100=0.23%, 250=0.72%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=1.40%, 4=7.23%, 10=17.06%, 20=38.67%, 50=32.98% lat (msec) : 100=1.46%, 750=0.03% cpu : usr=0.10%, sys=25.61%, ctx=9774, 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=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=189650: Tue Aug 18 21:43:37 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(5940KiB/54062msec) clat (usec): min=34, max=674918, avg=19170.36, stdev=19752.54 lat (usec): min=34, max=674921, avg=19171.54, stdev=19752.55 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 7308], 10.00th=[ 8717], 20.00th=[ 10814], | 30.00th=[ 12649], 40.00th=[ 14746], 50.00th=[ 16909], 60.00th=[ 19006], | 70.00th=[ 21890], 80.00th=[ 25560], 90.00th=[ 31327], 95.00th=[ 38011], | 99.00th=[ 50594], 99.50th=[ 52691], 99.90th=[ 82314], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 23, max= 199, per=25.26%, avg=110.41, stdev=31.19, samples=106 iops : min= 5, max= 49, avg=27.16, stdev= 7.88, samples=106 write: IOPS=29, BW=117KiB/s (120kB/s)(6348KiB/54062msec); 0 zone resets clat (usec): min=799, max=82428, avg=16015.31, stdev=11993.45 lat (usec): min=799, max=82429, avg=16018.28, stdev=11996.02 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 2671], 10.00th=[ 3195], 20.00th=[ 4883], | 30.00th=[ 8356], 40.00th=[11076], 50.00th=[13566], 60.00th=[16057], | 70.00th=[19792], 80.00th=[25560], 90.00th=[32375], 95.00th=[39584], | 99.00th=[54789], 99.50th=[59507], 99.90th=[72877], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 47, max= 215, per=25.74%, avg=117.64, stdev=33.37, samples=106 iops : min= 11, max= 53, avg=28.97, stdev= 8.41, samples=106 lat (usec) : 50=0.13%, 100=0.33%, 250=0.75%, 500=0.03%, 1000=0.20% lat (msec) : 2=0.94%, 4=7.58%, 10=16.73%, 20=40.40%, 50=31.54% lat (msec) : 100=1.33%, 750=0.03% cpu : usr=0.09%, sys=25.41%, ctx=9657, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189651: Tue Aug 18 21:43:37 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(6028KiB/54726msec) clat (usec): min=80, max=95832, avg=19182.31, stdev=10464.82 lat (usec): min=81, max=95833, avg=19189.13, stdev=10465.49 clat percentiles (usec): | 1.00th=[ 143], 5.00th=[ 7504], 10.00th=[ 8848], 20.00th=[10683], | 30.00th=[12911], 40.00th=[15008], 50.00th=[16909], 60.00th=[19268], | 70.00th=[22152], 80.00th=[26608], 90.00th=[32375], 95.00th=[39584], | 99.00th=[51643], 99.50th=[60556], 99.90th=[74974], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 31, max= 192, per=25.42%, avg=111.08, stdev=33.96, samples=107 iops : min= 7, max= 48, avg=27.33, stdev= 8.57, samples=107 write: IOPS=28, BW=114KiB/s (117kB/s)(6260KiB/54726msec); 0 zone resets clat (usec): min=699, max=673079, avg=16384.50, stdev=20551.10 lat (usec): min=700, max=673081, avg=16385.91, stdev=20551.21 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 2769], 10.00th=[ 3261], 20.00th=[ 4686], | 30.00th=[ 7832], 40.00th=[ 10552], 50.00th=[ 13042], 60.00th=[ 16057], | 70.00th=[ 20055], 80.00th=[ 25297], 90.00th=[ 33162], 95.00th=[ 39060], | 99.00th=[ 53740], 99.50th=[ 62653], 99.90th=[ 88605], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 39, max= 184, per=25.23%, avg=115.28, stdev=35.37, samples=107 iops : min= 9, max= 46, avg=28.37, stdev= 8.90, samples=107 lat (usec) : 100=0.16%, 250=0.72%, 750=0.03%, 1000=0.29% lat (msec) : 2=0.62%, 4=7.42%, 10=17.58%, 20=39.55%, 50=32.23% lat (msec) : 100=1.37%, 750=0.03% cpu : usr=0.11%, sys=25.48%, ctx=9904, 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=189652: Tue Aug 18 21:43:37 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(6052KiB/54943msec) clat (usec): min=35, max=71350, avg=19133.40, stdev=9953.67 lat (usec): min=36, max=71351, avg=19134.33, stdev=9953.75 clat percentiles (usec): | 1.00th=[ 105], 5.00th=[ 7570], 10.00th=[ 9241], 20.00th=[11207], | 30.00th=[13173], 40.00th=[15270], 50.00th=[17433], 60.00th=[19792], | 70.00th=[22152], 80.00th=[26084], 90.00th=[31851], 95.00th=[38011], | 99.00th=[52691], 99.50th=[55313], 99.90th=[68682], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 39, max= 168, per=25.38%, avg=110.89, stdev=29.70, samples=108 iops : min= 9, max= 42, avg=27.28, stdev= 7.53, samples=108 write: IOPS=28, BW=113KiB/s (116kB/s)(6236KiB/54943msec); 0 zone resets clat (usec): min=659, max=680823, avg=16552.41, stdev=20853.72 lat (usec): min=659, max=680824, avg=16554.22, stdev=20854.20 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2769], 10.00th=[ 3326], 20.00th=[ 4817], | 30.00th=[ 7963], 40.00th=[ 10683], 50.00th=[ 13042], 60.00th=[ 16450], | 70.00th=[ 20055], 80.00th=[ 24773], 90.00th=[ 33817], 95.00th=[ 40633], | 99.00th=[ 55837], 99.50th=[ 59507], 99.90th=[ 74974], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 47, max= 208, per=24.97%, avg=114.11, stdev=34.19, samples=108 iops : min= 11, max= 52, avg=28.09, stdev= 8.63, samples=108 lat (usec) : 50=0.07%, 100=0.39%, 250=0.68%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.29% lat (msec) : 2=0.88%, 4=6.74%, 10=16.47%, 20=39.75%, 50=33.04% lat (msec) : 100=1.53%, 750=0.03% cpu : usr=0.09%, sys=25.23%, ctx=9924, 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=437KiB/s (448kB/s), 109KiB/s-110KiB/s (112kB/s-113kB/s), io=23.4MiB (24.6MB), run=54062-54943msec WRITE: bw=458KiB/s (469kB/s), 113KiB/s-117KiB/s (116kB/s-120kB/s), io=24.6MiB (25.7MB), run=54062-54943msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189644: Tue Aug 18 21:43:45 2026 read: IOPS=23, BW=95.2KiB/s (97.5kB/s)(5992KiB/62941msec) clat (msec): min=2, max=651, avg=18.32, stdev=21.81 lat (msec): min=2, max=651, avg=18.32, stdev=21.81 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 39], 95.00th=[ 47], | 99.00th=[ 72], 99.50th=[ 81], 99.90th=[ 105], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 31, max= 336, per=25.05%, avg=95.45, stdev=65.22, samples=124 iops : min= 7, max= 84, avg=23.50, stdev=16.42, samples=124 write: IOPS=25, BW=100KiB/s (102kB/s)(6296KiB/62941msec); 0 zone resets clat (msec): min=4, max=109, avg=22.40, stdev=15.43 lat (msec): min=4, max=109, avg=22.40, stdev=15.43 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 44], 95.00th=[ 52], | 99.00th=[ 72], 99.50th=[ 83], 99.90th=[ 96], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 23, max= 336, per=25.14%, avg=100.29, stdev=67.41, samples=124 iops : min= 5, max= 84, avg=24.71, stdev=16.99, samples=124 lat (msec) : 4=0.75%, 10=30.66%, 20=29.75%, 50=33.98%, 100=4.72% lat (msec) : 250=0.10%, 750=0.03% cpu : usr=0.10%, sys=14.06%, ctx=6551, 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=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=189645: Tue Aug 18 21:43:45 2026 read: IOPS=23, BW=94.4KiB/s (96.7kB/s)(5940KiB/62891msec) clat (msec): min=2, max=669, avg=18.37, stdev=22.29 lat (msec): min=2, max=669, avg=18.37, stdev=22.29 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 40], 95.00th=[ 49], | 99.00th=[ 70], 99.50th=[ 82], 99.90th=[ 100], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 16, max= 328, per=24.93%, avg=95.00, stdev=65.11, samples=124 iops : min= 4, max= 82, avg=23.39, stdev=16.40, samples=124 write: IOPS=25, BW=101KiB/s (103kB/s)(6348KiB/62891msec); 0 zone resets clat (msec): min=4, max=109, avg=22.28, stdev=15.46 lat (msec): min=4, max=109, avg=22.28, stdev=15.46 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 34], 90.00th=[ 43], 95.00th=[ 50], | 99.00th=[ 79], 99.50th=[ 85], 99.90th=[ 104], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 15, max= 336, per=25.38%, avg=101.26, stdev=66.44, samples=124 iops : min= 3, max= 84, avg=24.95, stdev=16.74, samples=124 lat (msec) : 4=0.65%, 10=30.99%, 20=29.49%, 50=34.24%, 100=4.52% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.10%, sys=14.06%, ctx=6420, 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=189646: Tue Aug 18 21:43:45 2026 read: IOPS=23, BW=95.9KiB/s (98.2kB/s)(6028KiB/62887msec) clat (usec): min=2697, max=96481, avg=17887.83, stdev=14241.61 lat (usec): min=2698, max=96482, avg=17888.62, stdev=14241.67 clat percentiles (usec): | 1.00th=[ 3884], 5.00th=[ 4817], 10.00th=[ 5342], 20.00th=[ 6325], | 30.00th=[ 8356], 40.00th=[10683], 50.00th=[13173], 60.00th=[16450], | 70.00th=[21365], 80.00th=[26870], 90.00th=[38011], 95.00th=[45876], | 99.00th=[66323], 99.50th=[79168], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 24, max= 352, per=25.29%, avg=96.35, stdev=67.51, samples=124 iops : min= 6, max= 88, avg=23.73, stdev=17.00, samples=124 write: IOPS=24, BW=99.5KiB/s (102kB/s)(6260KiB/62887msec); 0 zone resets clat (msec): min=4, max=672, avg=22.80, stdev=22.55 lat (msec): min=4, max=672, avg=22.80, stdev=22.55 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 43], 95.00th=[ 50], | 99.00th=[ 79], 99.50th=[ 88], 99.90th=[ 110], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 23, max= 344, per=25.02%, avg=99.84, stdev=66.43, samples=124 iops : min= 5, max= 86, avg=24.60, stdev=16.73, samples=124 lat (msec) : 4=0.59%, 10=30.99%, 20=28.94%, 50=35.25%, 100=4.10% lat (msec) : 250=0.10%, 750=0.03% cpu : usr=0.09%, sys=13.94%, ctx=6594, 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=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=189647: Tue Aug 18 21:43:45 2026 read: IOPS=24, BW=96.1KiB/s (98.4kB/s)(6052KiB/62954msec) clat (usec): min=2775, max=93305, avg=17637.89, stdev=13881.26 lat (usec): min=2775, max=93305, avg=17638.65, stdev=13881.31 clat percentiles (usec): | 1.00th=[ 3752], 5.00th=[ 4686], 10.00th=[ 5276], 20.00th=[ 6652], | 30.00th=[ 8291], 40.00th=[10290], 50.00th=[12649], 60.00th=[16057], | 70.00th=[20579], 80.00th=[27657], 90.00th=[38011], 95.00th=[46924], | 99.00th=[65274], 99.50th=[70779], 99.90th=[87557], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 23, max= 368, per=25.31%, avg=96.42, stdev=66.04, samples=124 iops : min= 5, max= 92, avg=23.74, stdev=16.63, samples=124 write: IOPS=24, BW=99.1KiB/s (101kB/s)(6236KiB/62954msec); 0 zone resets clat (msec): min=4, max=674, avg=23.11, stdev=22.82 lat (msec): min=4, max=674, avg=23.11, stdev=22.82 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 45], 95.00th=[ 54], | 99.00th=[ 75], 99.50th=[ 83], 99.90th=[ 109], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 32, max= 336, per=24.89%, avg=99.32, stdev=66.70, samples=124 iops : min= 8, max= 84, avg=24.47, stdev=16.81, samples=124 lat (msec) : 4=0.85%, 10=31.35%, 20=28.39%, 50=34.47%, 100=4.85% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.10%, sys=14.08%, ctx=6430, 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=381KiB/s (391kB/s), 94.4KiB/s-96.1KiB/s (96.7kB/s-98.4kB/s), io=23.4MiB (24.6MB), run=62887-62954msec WRITE: bw=399KiB/s (409kB/s), 99.1KiB/s-101KiB/s (101kB/s-103kB/s), io=24.6MiB (25.7MB), run=62887-62954msec 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=189675: Tue Aug 18 21:44:08 2026 read: IOPS=20, BW=331KiB/s (339kB/s)(5920KiB/17861msec) clat (usec): min=41, max=101036, avg=25516.16, stdev=16804.09 lat (usec): min=41, max=101048, avg=25517.13, stdev=16804.24 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 93], 10.00th=[ 9503], 20.00th=[ 13435], | 30.00th=[ 16909], 40.00th=[ 20579], 50.00th=[ 22676], 60.00th=[ 26084], | 70.00th=[ 30278], 80.00th=[ 34866], 90.00th=[ 45351], 95.00th=[ 56886], | 99.00th=[ 90702], 99.50th=[100140], 99.90th=[101188], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 159, max= 574, per=24.98%, avg=330.46, stdev=92.22, samples=35 iops : min= 9, max= 35, avg=19.97, stdev= 5.74, samples=35 write: IOPS=22, BW=357KiB/s (365kB/s)(6368KiB/17861msec); 0 zone resets clat (usec): min=1764, max=163087, avg=21037.06, stdev=19284.98 lat (usec): min=1767, max=163088, avg=21039.42, stdev=19285.71 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2540], 10.00th=[ 3818], 20.00th=[ 5407], | 30.00th=[ 8979], 40.00th=[ 11863], 50.00th=[ 15401], 60.00th=[ 19268], | 70.00th=[ 26084], 80.00th=[ 31851], 90.00th=[ 45876], 95.00th=[ 57934], | 99.00th=[ 94897], 99.50th=[107480], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 127, max= 544, per=25.70%, avg=357.80, stdev=108.28, samples=35 iops : min= 7, max= 34, avg=21.69, stdev= 6.88, samples=35 lat (usec) : 50=0.26%, 100=2.47%, 250=1.17%, 500=0.13% lat (msec) : 2=0.65%, 4=4.69%, 10=12.89%, 20=27.86%, 50=42.06% lat (msec) : 100=7.29%, 250=0.52% cpu : usr=0.05%, sys=15.74%, ctx=2351, 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=189676: Tue Aug 18 21:44:08 2026 read: IOPS=19, BW=318KiB/s (325kB/s)(5744KiB/18091msec) clat (usec): min=45, max=114809, avg=26249.55, stdev=16835.67 lat (usec): min=46, max=114810, avg=26250.46, stdev=16835.69 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 343], 10.00th=[ 11600], 20.00th=[ 14222], | 30.00th=[ 17171], 40.00th=[ 19792], 50.00th=[ 22414], 60.00th=[ 26346], | 70.00th=[ 29754], 80.00th=[ 35914], 90.00th=[ 45876], 95.00th=[ 57934], | 99.00th=[ 90702], 99.50th=[103285], 99.90th=[114820], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 159, max= 541, per=24.12%, avg=319.11, stdev=94.11, samples=35 iops : min= 9, max= 33, avg=19.26, stdev= 5.93, samples=35 write: IOPS=22, BW=362KiB/s (370kB/s)(6544KiB/18091msec); 0 zone resets clat (usec): min=1569, max=152634, avg=20839.45, stdev=18396.51 lat (usec): min=1571, max=152635, avg=20846.85, stdev=18395.17 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 3261], 10.00th=[ 4490], 20.00th=[ 5735], | 30.00th=[ 8586], 40.00th=[ 13042], 50.00th=[ 16581], 60.00th=[ 20579], | 70.00th=[ 25035], 80.00th=[ 31851], 90.00th=[ 42206], 95.00th=[ 55313], | 99.00th=[ 87557], 99.50th=[103285], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 160, max= 574, per=25.88%, avg=360.31, stdev=111.35, samples=35 iops : min= 10, max= 35, avg=21.86, stdev= 6.99, samples=35 lat (usec) : 50=0.13%, 100=1.30%, 250=0.78%, 500=0.13% lat (msec) : 2=0.78%, 4=3.52%, 10=15.23%, 20=28.91%, 50=41.93% lat (msec) : 100=6.64%, 250=0.65% cpu : usr=0.07%, sys=15.95%, ctx=2431, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189678: Tue Aug 18 21:44:08 2026 read: IOPS=21, BW=348KiB/s (356kB/s)(6256KiB/17981msec) clat (usec): min=33, max=104400, avg=25345.59, stdev=16065.05 lat (usec): min=33, max=104401, avg=25346.60, stdev=16065.02 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 94], 10.00th=[ 9634], 20.00th=[ 13698], | 30.00th=[ 17171], 40.00th=[ 20055], 50.00th=[ 22938], 60.00th=[ 26346], | 70.00th=[ 30016], 80.00th=[ 35390], 90.00th=[ 42730], 95.00th=[ 52691], | 99.00th=[ 82314], 99.50th=[ 99091], 99.90th=[104334], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 127, max= 574, per=26.40%, avg=349.26, stdev=114.23, samples=35 iops : min= 7, max= 35, avg=21.17, stdev= 7.05, samples=35 write: IOPS=20, BW=335KiB/s (344kB/s)(6032KiB/17981msec); 0 zone resets clat (usec): min=1718, max=138171, avg=20895.60, stdev=18393.58 lat (usec): min=1719, max=138173, avg=20897.58, stdev=18394.00 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2573], 10.00th=[ 3752], 20.00th=[ 5669], | 30.00th=[ 7963], 40.00th=[ 12256], 50.00th=[ 15795], 60.00th=[ 20055], | 70.00th=[ 24773], 80.00th=[ 33817], 90.00th=[ 44827], 95.00th=[ 57934], | 99.00th=[ 77071], 99.50th=[ 89654], 99.90th=[137364], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 158, max= 576, per=23.77%, avg=330.91, stdev=106.28, samples=35 iops : min= 9, max= 36, avg=20.00, stdev= 6.62, samples=35 lat (usec) : 50=0.26%, 100=2.34%, 250=1.30% lat (msec) : 2=0.65%, 4=4.56%, 10=14.19%, 20=26.43%, 50=43.75% lat (msec) : 100=6.25%, 250=0.26% cpu : usr=0.08%, sys=15.45%, ctx=2369, 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=189679: Tue Aug 18 21:44:08 2026 read: IOPS=21, BW=345KiB/s (354kB/s)(6032KiB/17467msec) clat (usec): min=50, max=86275, avg=23474.96, stdev=14988.84 lat (usec): min=51, max=86275, avg=23476.09, stdev=14989.12 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 90], 10.00th=[ 9241], 20.00th=[13698], | 30.00th=[16450], 40.00th=[18482], 50.00th=[20841], 60.00th=[23725], | 70.00th=[26608], 80.00th=[31851], 90.00th=[41157], 95.00th=[54789], | 99.00th=[81265], 99.50th=[81265], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 32, max= 479, per=25.88%, avg=342.44, stdev=92.14, samples=34 iops : min= 2, max= 29, avg=20.74, stdev= 5.71, samples=34 write: IOPS=22, BW=358KiB/s (367kB/s)(6256KiB/17467msec); 0 zone resets clat (usec): min=1465, max=170052, avg=21619.65, stdev=22469.29 lat (usec): min=1467, max=170054, avg=21622.46, stdev=22468.39 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2442], 10.00th=[ 3359], 20.00th=[ 4752], | 30.00th=[ 7046], 40.00th=[ 11994], 50.00th=[ 16057], 60.00th=[ 20317], | 70.00th=[ 25822], 80.00th=[ 33162], 90.00th=[ 44303], 95.00th=[ 61080], | 99.00th=[119014], 99.50th=[158335], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 159, max= 608, per=25.59%, avg=356.26, stdev=100.54, samples=34 iops : min= 9, max= 38, avg=21.59, stdev= 6.38, samples=34 lat (usec) : 100=2.99%, 250=1.43% lat (msec) : 2=1.43%, 4=5.99%, 10=11.33%, 20=29.95%, 50=39.58% lat (msec) : 100=6.38%, 250=0.91% cpu : usr=0.07%, sys=15.93%, ctx=2283, 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=1324KiB/s (1356kB/s), 318KiB/s-348KiB/s (325kB/s-356kB/s), io=23.4MiB (24.5MB), run=17467-18091msec WRITE: bw=1393KiB/s (1426kB/s), 335KiB/s-362KiB/s (344kB/s-370kB/s), io=24.6MiB (25.8MB), run=17467-18091msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189680: Tue Aug 18 21:44:13 2026 read: IOPS=16, BW=256KiB/s (263kB/s)(5920KiB/23084msec) clat (msec): min=5, max=139, avg=23.27, stdev=18.36 lat (msec): min=5, max=139, avg=23.28, stdev=18.36 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 23], 80.00th=[ 34], 90.00th=[ 50], 95.00th=[ 59], | 99.00th=[ 100], 99.50th=[ 111], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 31, max= 606, per=24.36%, avg=251.64, stdev=134.56, samples=45 iops : min= 1, max= 37, avg=15.11, stdev= 8.58, samples=45 write: IOPS=17, BW=276KiB/s (282kB/s)(6368KiB/23084msec); 0 zone resets clat (msec): min=8, max=170, avg=35.88, stdev=23.60 lat (msec): min=8, max=170, avg=35.89, stdev=23.60 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 66], 95.00th=[ 87], | 99.00th=[ 124], 99.50th=[ 136], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 95, max= 544, per=25.10%, avg=272.89, stdev=122.58, samples=45 iops : min= 5, max= 34, avg=16.47, stdev= 7.78, samples=45 lat (msec) : 10=5.86%, 20=37.11%, 50=42.32%, 100=12.89%, 250=1.82% cpu : usr=0.10%, sys=6.45%, ctx=1431, 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=189681: Tue Aug 18 21:44:13 2026 read: IOPS=15, BW=248KiB/s (254kB/s)(5744KiB/23177msec) clat (msec): min=6, max=166, avg=25.24, stdev=21.89 lat (msec): min=6, max=166, avg=25.24, stdev=21.89 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 36], 90.00th=[ 59], 95.00th=[ 70], | 99.00th=[ 106], 99.50th=[ 125], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 31, max= 608, per=23.58%, avg=243.60, stdev=136.33, samples=45 iops : min= 1, max= 38, avg=14.62, stdev= 8.72, samples=45 write: IOPS=17, BW=282KiB/s (289kB/s)(6544KiB/23177msec); 0 zone resets clat (msec): min=8, max=197, avg=34.12, stdev=23.43 lat (msec): min=8, max=197, avg=34.13, stdev=23.43 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 48], 90.00th=[ 63], 95.00th=[ 80], | 99.00th=[ 132], 99.50th=[ 146], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 62, max= 638, per=25.21%, avg=274.04, stdev=130.81, samples=45 iops : min= 3, max= 39, avg=16.53, stdev= 8.31, samples=45 lat (msec) : 10=5.86%, 20=38.93%, 50=40.23%, 100=13.41%, 250=1.56% cpu : usr=0.07%, sys=6.33%, ctx=1407, 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=189682: Tue Aug 18 21:44:13 2026 read: IOPS=16, BW=271KiB/s (278kB/s)(6256KiB/23077msec) clat (msec): min=5, max=173, avg=24.39, stdev=20.97 lat (msec): min=5, max=173, avg=24.39, stdev=20.97 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 36], 90.00th=[ 53], 95.00th=[ 67], | 99.00th=[ 111], 99.50th=[ 132], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 62, max= 704, per=26.11%, avg=269.69, stdev=148.99, samples=45 iops : min= 3, max= 44, avg=16.24, stdev= 9.49, samples=45 write: IOPS=16, BW=261KiB/s (268kB/s)(6032KiB/23077msec); 0 zone resets clat (msec): min=10, max=183, avg=35.70, stdev=25.98 lat (msec): min=10, max=183, avg=35.72, stdev=25.98 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 68], 95.00th=[ 80], | 99.00th=[ 163], 99.50th=[ 174], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 63, max= 640, per=23.53%, avg=255.82, stdev=132.94, samples=45 iops : min= 3, max= 40, avg=15.38, stdev= 8.44, samples=45 lat (msec) : 10=7.42%, 20=37.63%, 50=40.10%, 100=12.63%, 250=2.21% cpu : usr=0.05%, sys=6.59%, ctx=1414, 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=189683: Tue Aug 18 21:44:13 2026 read: IOPS=16, BW=261KiB/s (267kB/s)(6032KiB/23110msec) clat (msec): min=5, max=171, avg=25.15, stdev=22.48 lat (msec): min=5, max=171, avg=25.15, stdev=22.48 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 25], 80.00th=[ 35], 90.00th=[ 54], 95.00th=[ 74], | 99.00th=[ 131], 99.50th=[ 142], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 63, max= 574, per=24.66%, avg=254.78, stdev=133.04, samples=45 iops : min= 3, max= 35, avg=15.31, stdev= 8.45, samples=45 write: IOPS=16, BW=271KiB/s (277kB/s)(6256KiB/23110msec); 0 zone resets clat (msec): min=10, max=200, avg=34.25, stdev=23.12 lat (msec): min=10, max=200, avg=34.25, stdev=23.12 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 48], 90.00th=[ 62], 95.00th=[ 78], | 99.00th=[ 133], 99.50th=[ 155], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 62, max= 576, per=24.65%, avg=267.98, stdev=130.78, samples=45 iops : min= 3, max= 36, avg=16.16, stdev= 8.33, samples=45 lat (msec) : 10=7.94%, 20=36.59%, 50=41.02%, 100=12.76%, 250=1.69% cpu : usr=0.10%, sys=6.60%, ctx=1424, 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=1033KiB/s (1058kB/s), 248KiB/s-271KiB/s (254kB/s-278kB/s), io=23.4MiB (24.5MB), run=23077-23177msec WRITE: bw=1087KiB/s (1113kB/s), 261KiB/s-282KiB/s (268kB/s-289kB/s), io=24.6MiB (25.8MB), run=23077-23177msec 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=189692: Tue Aug 18 21:44:24 2026 read: IOPS=1, BW=1980KiB/s (2028kB/s)(7168KiB/3620msec) clat (usec): min=449, max=385656, avg=93826.32, stdev=143366.83 lat (usec): min=451, max=385657, avg=93827.53, stdev=143366.85 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 449], 10.00th=[ 449], 20.00th=[ 529], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 4047], 60.00th=[110625], | 70.00th=[110625], 80.00th=[154141], 90.00th=[383779], 95.00th=[383779], | 99.00th=[383779], 99.50th=[383779], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 2048, max= 6107, per=79.37%, avg=4070.00, stdev=2029.54, samples=3 iops : min= 2, max= 5, avg= 3.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1414KiB/s (1448kB/s)(5120KiB/3620msec); 0 zone resets clat (msec): min=216, max=1360, avg=520.19, stdev=473.49 lat (msec): min=216, max=1360, avg=520.23, stdev=473.49 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 2027, max= 4079, per=37.86%, avg=2718.00, stdev=1178.71, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 10=8.33%, 250=25.00%, 500=33.33%, 2000=8.33% cpu : usr=0.06%, sys=14.09%, ctx=271, 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=189693: Tue Aug 18 21:44:24 2026 read: IOPS=0, BW=513KiB/s (525kB/s)(2048KiB/3993msec) clat (usec): min=740, max=1215.0k, avg=608361.98, stdev=859306.15 lat (usec): min=741, max=1215.0k, avg=608363.57, stdev=859306.70 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 742], 10.00th=[ 742], | 20.00th=[ 742], 30.00th=[ 742], 40.00th=[ 742], | 50.00th=[ 742], 60.00th=[1216349], 70.00th=[1216349], | 80.00th=[1216349], 90.00th=[1216349], 95.00th=[1216349], | 99.00th=[1216349], 99.50th=[1216349], 99.90th=[1216349], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 2039, max= 2048, per=39.85%, avg=2043.50, stdev= 6.36, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2564KiB/s (2626kB/s)(10.0MiB/3993msec); 0 zone resets clat (msec): min=120, max=495, avg=262.83, stdev=136.69 lat (msec): min=121, max=495, avg=262.90, stdev=136.67 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 124], | 30.00th=[ 159], 40.00th=[ 180], 50.00th=[ 192], 60.00th=[ 251], | 70.00th=[ 264], 80.00th=[ 414], 90.00th=[ 430], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 2027, max= 4096, per=39.81%, avg=2858.60, stdev=1121.87, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.30, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=41.67%, 2000=8.33% cpu : usr=0.03%, sys=20.07%, ctx=248, 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=189694: Tue Aug 18 21:44:24 2026 read: IOPS=3, BW=3438KiB/s (3521kB/s)(6144KiB/1787msec) clat (usec): min=650, max=271519, avg=107817.65, stdev=97387.54 lat (usec): min=651, max=271520, avg=107818.90, stdev=97387.42 clat percentiles (usec): | 1.00th=[ 652], 5.00th=[ 652], 10.00th=[ 652], 20.00th=[ 27919], | 30.00th=[ 27919], 40.00th=[ 77071], 50.00th=[ 77071], 60.00th=[121111], | 70.00th=[147850], 80.00th=[147850], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 4071, max= 6144, per=99.60%, avg=5107.50, stdev=1465.83, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=3, BW=3438KiB/s (3521kB/s)(6144KiB/1787msec); 0 zone resets clat (msec): min=122, max=292, avg=184.57, stdev=64.69 lat (msec): min=122, max=292, avg=184.63, stdev=64.69 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 203], | 70.00th=[ 213], 80.00th=[ 213], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 2048, max= 4071, per=45.91%, avg=3296.67, stdev=1091.73, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 100=8.33%, 250=58.33%, 500=16.67% cpu : usr=0.00%, sys=29.96%, ctx=250, 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=189695: Tue Aug 18 21:44:24 2026 read: IOPS=1, BW=1551KiB/s (1588kB/s)(5120KiB/3302msec) clat (usec): min=465, max=164486, avg=77576.16, stdev=73942.57 lat (usec): min=466, max=164488, avg=77577.30, stdev=73942.60 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 465], | 30.00th=[ 1123], 40.00th=[ 1123], 50.00th=[ 99091], 60.00th=[ 99091], | 70.00th=[123208], 80.00th=[123208], 90.00th=[164627], 95.00th=[164627], | 99.00th=[164627], 99.50th=[164627], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2171KiB/s (2223kB/s)(7168KiB/3302msec); 0 zone resets clat (msec): min=169, max=1456, avg=403.47, stdev=468.67 lat (msec): min=169, max=1456, avg=403.52, stdev=468.68 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 176], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 213], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 326], 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= 2027, max= 4079, per=42.33%, avg=3039.00, stdev=1159.71, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33% lat (msec) : 2=8.33%, 100=8.33%, 250=50.00%, 500=16.67%, 2000=8.33% cpu : usr=0.00%, sys=17.87%, ctx=248, 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=5129KiB/s (5252kB/s), 513KiB/s-3438KiB/s (525kB/s-3521kB/s), io=20.0MiB (20.0MB), run=1787-3993msec WRITE: bw=7181KiB/s (7353kB/s), 1414KiB/s-3438KiB/s (1448kB/s-3521kB/s), io=28.0MiB (29.4MB), run=1787-3993msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189696: Tue Aug 18 21:44:25 2026 read: IOPS=1, BW=1809KiB/s (1852kB/s)(7168KiB/3963msec) clat (msec): min=80, max=376, avg=170.33, stdev=125.48 lat (msec): min=80, max=376, avg=170.33, stdev=125.48 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 87], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 103], 60.00th=[ 122], | 70.00th=[ 122], 80.00th=[ 330], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 3915, max= 5941, per=100.00%, avg=4928.00, stdev=1432.60, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1292KiB/s (1323kB/s)(5120KiB/3963msec); 0 zone resets clat (msec): min=274, max=1283, avg=544.18, stdev=416.52 lat (msec): min=274, max=1283, avg=544.25, stdev=416.52 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 422], 80.00th=[ 422], 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= 1957, max= 2039, per=30.44%, avg=2016.50, stdev=39.85, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=25.00%, 250=16.67%, 500=50.00%, 2000=8.33% cpu : usr=0.00%, sys=8.15%, ctx=107, 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=189697: Tue Aug 18 21:44:25 2026 read: IOPS=0, BW=473KiB/s (485kB/s)(2048KiB/4328msec) clat (msec): min=157, max=1413, avg=785.74, stdev=888.42 lat (msec): min=157, max=1413, avg=785.75, stdev=888.42 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 1996, max= 2039, per=42.64%, avg=2017.50, stdev=30.41, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2366KiB/s (2423kB/s)(10.0MiB/4328msec); 0 zone resets clat (msec): min=89, max=412, avg=259.66, stdev=131.71 lat (msec): min=89, max=413, avg=259.87, stdev=131.77 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 110], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 184], 60.00th=[ 309], | 70.00th=[ 363], 80.00th=[ 401], 90.00th=[ 409], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 2027, max= 6131, per=55.25%, avg=3659.80, stdev=1710.89, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=9.01%, ctx=157, 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=189698: Tue Aug 18 21:44:25 2026 read: IOPS=1, BW=1474KiB/s (1510kB/s)(6144KiB/4167msec) clat (msec): min=106, max=393, avg=200.48, stdev=114.82 lat (msec): min=106, max=393, avg=200.48, stdev=114.82 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 107], | 30.00th=[ 107], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 174], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2035, max= 4063, per=53.77%, avg=2544.00, stdev=1012.67, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1474KiB/s (1510kB/s)(6144KiB/4167msec); 0 zone resets clat (msec): min=171, max=1349, avg=458.79, stdev=444.89 lat (msec): min=171, max=1349, avg=459.00, stdev=444.81 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 338], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 2031, max= 3915, per=37.83%, avg=2506.00, stdev=939.34, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=4.61%, ctx=85, 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=189699: Tue Aug 18 21:44:25 2026 read: IOPS=1, BW=1187KiB/s (1216kB/s)(5120KiB/4312msec) clat (msec): min=60, max=221, avg=106.32, stdev=65.69 lat (msec): min=60, max=221, avg=106.32, stdev=65.69 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 61], | 30.00th=[ 75], 40.00th=[ 75], 50.00th=[ 80], 60.00th=[ 80], | 70.00th=[ 96], 80.00th=[ 96], 90.00th=[ 222], 95.00th=[ 222], | 99.00th=[ 222], 99.50th=[ 222], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1662KiB/s (1702kB/s)(7168KiB/4312msec); 0 zone resets clat (msec): min=73, max=1289, avg=493.41, stdev=424.89 lat (msec): min=73, max=1289, avg=493.48, stdev=424.89 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 146], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 376], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 818], 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= 1996, max= 6131, per=42.89%, avg=2840.80, stdev=1839.37, samples=5 iops : min= 1, max= 5, avg= 1.80, stdev= 1.79, samples=5 lat (msec) : 100=41.67%, 250=16.67%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.09%, sys=6.94%, ctx=202, 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=4732KiB/s (4846kB/s), 473KiB/s-1809KiB/s (485kB/s-1852kB/s), io=20.0MiB (20.0MB), run=3963-4328msec WRITE: bw=6625KiB/s (6784kB/s), 1292KiB/s-2366KiB/s (1323kB/s-2423kB/s), io=28.0MiB (29.4MB), run=3963-4328msec 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=189706: Tue Aug 18 21:44:34 2026 read: IOPS=1, BW=7553KiB/s (7734kB/s)(12.0MiB/1627msec) clat (msec): min=496, max=585, avg=530.08, stdev=48.47 lat (msec): min=496, max=585, avg=530.08, stdev=48.46 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 5505, max= 8192, per=87.33%, avg=6848.50, stdev=1900.00, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=40.90%, ctx=1594, 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=189707: Tue Aug 18 21:44:34 2026 read: IOPS=0, BW=1961KiB/s (2008kB/s)(4096KiB/2089msec) clat (nsec): min=485553k, max=485553k, avg=485552921.00, stdev= 0.00 lat (nsec): min=485556k, max=485556k, avg=485556413.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 485], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 5618, max= 5618, per=71.64%, avg=5618.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3921KiB/s (4016kB/s)(8192KiB/2089msec); 0 zone resets clat (msec): min=219, max=1351, avg=785.83, stdev=800.27 lat (msec): min=220, max=1352, avg=786.16, stdev=800.34 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 220], 60.00th=[ 1351], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.80%, ctx=457, 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=189708: Tue Aug 18 21:44:34 2026 write: IOPS=2, BW=9042KiB/s (9259kB/s)(12.0MiB/1359msec); 0 zone resets clat (msec): min=142, max=908, avg=446.36, stdev=406.57 lat (msec): min=142, max=908, avg=446.83, stdev=406.68 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 288], | 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=15875, max=15875, per=100.00%, avg=15875.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=15.76%, ctx=196, 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=189709: Tue Aug 18 21:44:34 2026 write: IOPS=1, BW=7525KiB/s (7705kB/s)(12.0MiB/1633msec); 0 zone resets clat (msec): min=340, max=778, avg=533.95, stdev=223.10 lat (msec): min=341, max=778, avg=534.25, stdev=223.07 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 485], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 5728, max= 8192, per=44.37%, avg=6960.00, stdev=1742.31, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=16.12%, ctx=179, 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=7843KiB/s (8031kB/s), 1961KiB/s-7553KiB/s (2008kB/s-7734kB/s), io=16.0MiB (16.8MB), run=1627-2089msec WRITE: bw=15.3MiB/s (16.1MB/s), 3921KiB/s-9042KiB/s (4016kB/s-9259kB/s), io=32.0MiB (33.6MB), run=1359-2089msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189710: Tue Aug 18 21:44:34 2026 read: IOPS=1, BW=7567KiB/s (7748kB/s)(12.0MiB/1624msec) clat (msec): min=486, max=569, avg=535.48, stdev=43.57 lat (msec): min=486, max=569, avg=535.48, stdev=43.57 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 5752, max= 8192, per=90.18%, avg=6972.00, stdev=1725.34, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=14.60%, ctx=80, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=189711: Tue Aug 18 21:44:34 2026 read: IOPS=0, BW=1933KiB/s (1979kB/s)(4096KiB/2119msec) clat (nsec): min=761115k, max=761115k, avg=761114926.00, stdev= 0.00 lat (nsec): min=761117k, max=761117k, avg=761116846.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3866KiB/s (3959kB/s)(8192KiB/2119msec); 0 zone resets clat (msec): min=213, max=1115, avg=664.33, stdev=637.37 lat (msec): min=213, max=1115, avg=664.61, stdev=637.37 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 213], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.81%, ctx=85, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189712: Tue Aug 18 21:44:34 2026 write: IOPS=1, BW=6038KiB/s (6183kB/s)(12.0MiB/2035msec); 0 zone resets clat (msec): min=184, max=1224, avg=666.06, stdev=524.22 lat (msec): min=184, max=1224, avg=666.36, stdev=524.27 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 8159, max= 8159, per=52.76%, 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=12.59%, ctx=102, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189713: Tue Aug 18 21:44:34 2026 write: IOPS=1, BW=6759KiB/s (6921kB/s)(12.0MiB/1818msec); 0 zone resets clat (msec): min=150, max=835, avg=593.71, stdev=384.25 lat (msec): min=150, max=835, avg=593.96, stdev=384.33 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 8159, max= 8192, per=52.87%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.06%, sys=13.87%, ctx=64, 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=7732KiB/s (7918kB/s), 1933KiB/s-7567KiB/s (1979kB/s-7748kB/s), io=16.0MiB (16.8MB), run=1624-2119msec WRITE: bw=15.1MiB/s (15.8MB/s), 3866KiB/s-6759KiB/s (3959kB/s-6921kB/s), io=32.0MiB (33.6MB), run=1818-2119msec