== sanity test 398b: DIO and buffer IO race ============== 23:19:38 (1786936778) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.48429 s, 14.4 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes fio: pid=194341, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=194335: Sun Aug 16 23:20:59 2026 read: IOPS=21, BW=86.5KiB/s (88.6kB/s)(5992KiB/69261msec) clat (usec): min=33, max=128348, avg=23954.93, stdev=12862.09 lat (usec): min=34, max=128348, avg=23955.60, stdev=12862.10 clat percentiles (usec): | 1.00th=[ 141], 5.00th=[ 7963], 10.00th=[ 11076], 20.00th=[ 14222], | 30.00th=[ 16909], 40.00th=[ 19006], 50.00th=[ 22152], 60.00th=[ 25297], | 70.00th=[ 28443], 80.00th=[ 32637], 90.00th=[ 39584], 95.00th=[ 45876], | 99.00th=[ 62129], 99.50th=[ 71828], 99.90th=[122160], 99.95th=[128451], | 99.99th=[128451] bw ( KiB/s): min= 19, max= 175, per=25.30%, avg=87.04, stdev=26.48, samples=135 iops : min= 4, max= 43, avg=21.30, stdev= 6.70, samples=135 write: IOPS=22, BW=90.9KiB/s (93.1kB/s)(6296KiB/69261msec); 0 zone resets clat (usec): min=842, max=1400.6k, avg=20960.58, stdev=37464.30 lat (usec): min=842, max=1400.6k, avg=20961.19, stdev=37464.29 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 3818], 10.00th=[ 5342], | 20.00th=[ 7439], 30.00th=[ 10028], 40.00th=[ 14091], | 50.00th=[ 17695], 60.00th=[ 20841], 70.00th=[ 25297], | 80.00th=[ 31065], 90.00th=[ 39584], 95.00th=[ 46924], | 99.00th=[ 62129], 99.50th=[ 68682], 99.90th=[ 114820], | 99.95th=[1400898], 99.99th=[1400898] bw ( KiB/s): min= 24, max= 192, per=25.53%, avg=91.93, stdev=31.27, samples=134 iops : min= 6, max= 48, avg=22.51, stdev= 7.84, samples=134 lat (usec) : 50=0.10%, 100=0.20%, 250=1.04%, 500=0.46%, 1000=0.29% lat (msec) : 2=0.62%, 4=2.08%, 10=14.26%, 20=30.96%, 50=46.74% lat (msec) : 100=3.12%, 250=0.10%, 2000=0.03% cpu : usr=0.04%, sys=30.62%, ctx=11108, 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=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=194336: Sun Aug 16 23:20:59 2026 read: IOPS=21, BW=85.1KiB/s (87.2kB/s)(5940KiB/69783msec) clat (usec): min=37, max=101963, avg=24194.45, stdev=12507.21 lat (usec): min=37, max=101964, avg=24195.30, stdev=12507.36 clat percentiles (usec): | 1.00th=[ 110], 5.00th=[ 8225], 10.00th=[ 11207], 20.00th=[ 14484], | 30.00th=[ 17171], 40.00th=[ 19792], 50.00th=[ 22414], 60.00th=[ 25560], | 70.00th=[ 29230], 80.00th=[ 32900], 90.00th=[ 39584], 95.00th=[ 46400], | 99.00th=[ 63177], 99.50th=[ 69731], 99.90th=[ 96994], 99.95th=[102237], | 99.99th=[102237] bw ( KiB/s): min= 6, max= 200, per=24.96%, avg=85.85, stdev=30.03, samples=136 iops : min= 1, max= 50, avg=20.99, stdev= 7.55, samples=136 write: IOPS=22, BW=90.0KiB/s (93.1kB/s)(6348KiB/69783msec); 0 zone resets clat (usec): min=797, max=1427.3k, avg=21070.73, stdev=38136.56 lat (usec): min=798, max=1427.3k, avg=21073.24, stdev=38136.66 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 3654], 10.00th=[ 5342], | 20.00th=[ 7242], 30.00th=[ 9765], 40.00th=[ 13829], | 50.00th=[ 17433], 60.00th=[ 20841], 70.00th=[ 25560], | 80.00th=[ 31065], 90.00th=[ 39060], 95.00th=[ 47973], | 99.00th=[ 62129], 99.50th=[ 72877], 99.90th=[ 127402], | 99.95th=[1434452], 99.99th=[1434452] bw ( KiB/s): min= 6, max= 207, per=25.36%, avg=91.29, stdev=30.58, samples=136 iops : min= 1, max= 51, avg=22.36, stdev= 7.68, samples=136 lat (usec) : 50=0.07%, 100=0.29%, 250=1.07%, 500=0.36%, 750=0.03% lat (usec) : 1000=0.52% lat (msec) : 2=0.39%, 4=2.25%, 10=14.42%, 20=29.92%, 50=46.94% lat (msec) : 100=3.61%, 250=0.10%, 2000=0.03% cpu : usr=0.07%, sys=30.44%, ctx=11023, 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=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=194337: Sun Aug 16 23:20:59 2026 read: IOPS=21, BW=86.7KiB/s (88.8kB/s)(6028KiB/69527msec) clat (usec): min=36, max=1439.2k, avg=25072.54, stdev=38558.54 lat (usec): min=37, max=1439.2k, avg=25073.19, stdev=38558.54 clat percentiles (usec): | 1.00th=[ 165], 5.00th=[ 8979], 10.00th=[ 11207], | 20.00th=[ 14222], 30.00th=[ 16581], 40.00th=[ 19006], | 50.00th=[ 21890], 60.00th=[ 25297], 70.00th=[ 28967], | 80.00th=[ 33817], 90.00th=[ 40109], 95.00th=[ 47449], | 99.00th=[ 61604], 99.50th=[ 74974], 99.90th=[ 100140], | 99.95th=[1434452], 99.99th=[1434452] bw ( KiB/s): min= 31, max= 199, per=25.67%, avg=88.32, stdev=29.46, samples=135 iops : min= 7, max= 49, avg=21.61, stdev= 7.41, samples=135 write: IOPS=22, BW=90.0KiB/s (92.2kB/s)(6260KiB/69527msec); 0 zone resets clat (usec): min=867, max=115431, avg=20043.75, stdev=14606.38 lat (usec): min=868, max=115431, avg=20044.42, stdev=14606.39 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 3458], 10.00th=[ 5342], 20.00th=[ 7177], | 30.00th=[ 10028], 40.00th=[ 13566], 50.00th=[ 16909], 60.00th=[ 20317], | 70.00th=[ 25560], 80.00th=[ 30278], 90.00th=[ 40109], 95.00th=[ 48497], | 99.00th=[ 62653], 99.50th=[ 74974], 99.90th=[109577], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 19, max= 247, per=25.29%, avg=91.04, stdev=35.82, samples=136 iops : min= 4, max= 61, avg=22.29, stdev= 9.00, samples=136 lat (usec) : 50=0.03%, 100=0.13%, 250=0.94%, 500=0.29%, 750=0.03% lat (usec) : 1000=0.23% lat (msec) : 2=0.49%, 4=2.80%, 10=13.83%, 20=32.78%, 50=44.43% lat (msec) : 100=3.87%, 250=0.10%, 2000=0.03% cpu : usr=0.05%, sys=30.04%, ctx=11176, 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=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=194338: Sun Aug 16 23:20:59 2026 read: IOPS=21, BW=86.0KiB/s (89.0kB/s)(6052KiB/69594msec) clat (usec): min=35, max=88491, avg=23886.07, stdev=12609.20 lat (usec): min=36, max=88492, avg=23886.62, stdev=12609.22 clat percentiles (usec): | 1.00th=[ 139], 5.00th=[ 7373], 10.00th=[10814], 20.00th=[13960], | 30.00th=[16450], 40.00th=[19268], 50.00th=[22414], 60.00th=[25297], | 70.00th=[29230], 80.00th=[32900], 90.00th=[40109], 95.00th=[46400], | 99.00th=[61604], 99.50th=[73925], 99.90th=[86508], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 23, max= 184, per=25.71%, avg=88.44, stdev=29.25, samples=135 iops : min= 5, max= 46, avg=21.64, stdev= 7.36, samples=135 write: IOPS=22, BW=89.6KiB/s (91.8kB/s)(6236KiB/69594msec); 0 zone resets clat (usec): min=795, max=1445.9k, avg=21197.23, stdev=39039.40 lat (usec): min=795, max=1445.9k, avg=21203.13, stdev=39037.83 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 3392], 10.00th=[ 4883], | 20.00th=[ 7177], 30.00th=[ 9765], 40.00th=[ 13698], | 50.00th=[ 17433], 60.00th=[ 21365], 70.00th=[ 25560], | 80.00th=[ 31327], 90.00th=[ 40109], 95.00th=[ 48497], | 99.00th=[ 66323], 99.50th=[ 78119], 99.90th=[ 137364], | 99.95th=[1451230], 99.99th=[1451230] bw ( KiB/s): min= 15, max= 248, per=25.30%, avg=91.10, stdev=32.10, samples=135 iops : min= 3, max= 62, avg=22.31, stdev= 8.07, samples=135 lat (usec) : 50=0.07%, 100=0.13%, 250=1.63%, 500=0.29%, 750=0.03% lat (usec) : 1000=0.46% lat (msec) : 2=0.68%, 4=2.73%, 10=13.57%, 20=29.46%, 50=47.23% lat (msec) : 100=3.61%, 250=0.07%, 2000=0.03% cpu : usr=0.06%, sys=30.04%, ctx=11133, 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=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=344KiB/s (352kB/s), 85.1KiB/s-86.0KiB/s (87.2kB/s-89.0kB/s), io=23.4MiB (24.6MB), run=69261-69783msec WRITE: bw=360KiB/s (369kB/s), 89.6KiB/s-90.0KiB/s (91.8kB/s-93.1kB/s), io=24.6MiB (25.7MB), run=69261-69783msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194339: Sun Aug 16 23:21:06 2026 read: IOPS=19, BW=77.0KiB/s (79.8kB/s)(5992KiB/76855msec) clat (msec): min=3, max=1478, avg=23.04, stdev=41.11 lat (msec): min=3, max=1478, avg=23.04, stdev=41.11 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 45], 95.00th=[ 56], | 99.00th=[ 84], 99.50th=[ 93], 99.90th=[ 130], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 23, max= 312, per=32.58%, avg=78.85, stdev=55.70, samples=149 iops : min= 5, max= 78, avg=19.26, stdev=14.04, samples=149 write: IOPS=20, BW=81.9KiB/s (83.9kB/s)(6296KiB/76855msec); 0 zone resets clat (msec): min=4, max=179, avg=26.67, stdev=18.06 lat (msec): min=4, max=179, avg=26.67, stdev=18.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 19], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 40], 90.00th=[ 50], 95.00th=[ 58], | 99.00th=[ 89], 99.50th=[ 101], 99.90th=[ 153], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 16, max= 319, per=32.59%, avg=82.45, stdev=56.70, samples=149 iops : min= 4, max= 79, avg=20.15, stdev=14.27, samples=149 lat (msec) : 4=0.39%, 10=23.40%, 20=25.81%, 50=42.09%, 100=7.91% lat (msec) : 250=0.36%, 2000=0.03% cpu : usr=0.06%, sys=17.25%, ctx=7860, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194340: Sun Aug 16 23:21:06 2026 read: IOPS=19, BW=77.2KiB/s (79.1kB/s)(5940KiB/76897msec) clat (msec): min=3, max=1445, avg=23.02, stdev=40.36 lat (msec): min=3, max=1445, avg=23.02, stdev=40.36 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 45], 95.00th=[ 55], | 99.00th=[ 83], 99.50th=[ 87], 99.90th=[ 106], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 15, max= 304, per=32.45%, avg=78.54, stdev=57.59, samples=150 iops : min= 3, max= 76, avg=19.18, stdev=14.52, samples=150 write: IOPS=20, BW=82.6KiB/s (84.5kB/s)(6348KiB/76897msec); 0 zone resets clat (msec): min=5, max=141, avg=26.69, stdev=18.03 lat (msec): min=5, max=141, avg=26.70, stdev=18.03 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 19], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 40], 90.00th=[ 51], 95.00th=[ 60], | 99.00th=[ 90], 99.50th=[ 104], 99.90th=[ 134], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 15, max= 296, per=33.19%, avg=83.97, stdev=57.68, samples=150 iops : min= 3, max= 74, avg=20.54, stdev=14.53, samples=150 lat (msec) : 4=0.33%, 10=23.47%, 20=25.81%, 50=41.86%, 100=8.14% lat (msec) : 250=0.36%, 2000=0.03% cpu : usr=0.07%, sys=17.37%, ctx=7848, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=194341: Sun Aug 16 23:21:06 2026 read: IOPS=12, BW=49.5KiB/s (50.7kB/s)(632KiB/12755msec) clat (msec): min=8, max=103, avg=32.26, stdev=18.58 lat (msec): min=8, max=103, avg=32.26, stdev=18.58 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 15], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 36], 80.00th=[ 49], 90.00th=[ 57], 95.00th=[ 66], | 99.00th=[ 99], 99.50th=[ 104], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 23, max= 104, per=23.37%, avg=56.55, stdev=19.51, samples=22 iops : min= 5, max= 26, avg=13.73, stdev= 5.03, samples=22 write: IOPS=12, BW=49.2KiB/s (50.4kB/s)(628KiB/12755msec); 0 zone resets clat (msec): min=10, max=1430, avg=46.54, stdev=112.29 lat (msec): min=10, max=1430, avg=46.54, stdev=112.29 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 46], 80.00th=[ 50], 90.00th=[ 61], 95.00th=[ 68], | 99.00th=[ 97], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 23, max= 79, per=21.92%, avg=55.45, stdev=13.92, samples=22 iops : min= 5, max= 19, avg=13.45, stdev= 3.47, samples=22 lat (msec) : 10=0.32%, 20=20.25%, 50=61.71%, 100=16.77%, 250=0.32% lat (msec) : 2000=0.32% cpu : usr=0.02%, sys=15.85%, ctx=997, majf=0, minf=19 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=159,157,0,0 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=194342: Sun Aug 16 23:21:06 2026 read: IOPS=19, BW=78.8KiB/s (80.7kB/s)(6052KiB/76797msec) clat (msec): min=3, max=107, avg=21.87, stdev=15.86 lat (msec): min=3, max=107, avg=21.87, stdev=15.86 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 42], 95.00th=[ 54], | 99.00th=[ 75], 99.50th=[ 86], 99.90th=[ 107], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 15, max= 312, per=32.85%, avg=79.50, stdev=54.71, samples=149 iops : min= 3, max= 78, avg=19.42, stdev=13.80, samples=149 write: IOPS=20, BW=81.2KiB/s (83.1kB/s)(6236KiB/76797msec); 0 zone resets clat (msec): min=5, max=1430, avg=27.81, stdev=40.37 lat (msec): min=5, max=1430, avg=27.82, stdev=40.37 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 40], 90.00th=[ 50], 95.00th=[ 62], | 99.00th=[ 100], 99.50th=[ 114], 99.90th=[ 171], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 24, max= 336, per=32.42%, avg=82.01, stdev=56.50, samples=149 iops : min= 6, max= 84, avg=20.05, stdev=14.22, samples=149 lat (msec) : 4=0.20%, 10=22.85%, 20=26.04%, 50=42.87%, 100=7.42% lat (msec) : 250=0.59%, 2000=0.03% cpu : usr=0.05%, sys=17.41%, ctx=7862, 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=242KiB/s (248kB/s), 49.5KiB/s-78.8KiB/s (50.7kB/s-80.7kB/s), io=18.2MiB (19.1MB), run=12755-76897msec WRITE: bw=254KiB/s (260kB/s), 49.2KiB/s-82.6KiB/s (50.4kB/s-84.5kB/s), io=19.1MiB (19.0MB), run=12755-76897msec 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=194373: Sun Aug 16 23:21:40 2026 read: IOPS=14, BW=231KiB/s (237kB/s)(5920KiB/25619msec) clat (usec): min=118, max=104477, avg=34580.52, stdev=16570.54 lat (usec): min=119, max=104477, avg=34581.29, stdev=16570.42 clat percentiles (usec): | 1.00th=[ 188], 5.00th=[ 330], 10.00th=[ 17433], 20.00th=[ 22414], | 30.00th=[ 26346], 40.00th=[ 29754], 50.00th=[ 33162], 60.00th=[ 35914], | 70.00th=[ 40633], 80.00th=[ 46924], 90.00th=[ 55313], 95.00th=[ 63177], | 99.00th=[ 85459], 99.50th=[ 98042], 99.90th=[104334], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 126, max= 383, per=25.27%, avg=228.92, stdev=58.67, samples=50 iops : min= 7, max= 23, avg=13.64, stdev= 3.61, samples=50 write: IOPS=15, BW=249KiB/s (255kB/s)(6368KiB/25619msec); 0 zone resets clat (usec): min=3155, max=95018, avg=32109.85, stdev=17515.06 lat (usec): min=3155, max=95019, avg=32110.98, stdev=17515.06 clat percentiles (usec): | 1.00th=[ 6915], 5.00th=[ 9896], 10.00th=[12518], 20.00th=[16057], | 30.00th=[20317], 40.00th=[24773], 50.00th=[28705], 60.00th=[33817], | 70.00th=[38536], 80.00th=[45876], 90.00th=[56886], 95.00th=[67634], | 99.00th=[80217], 99.50th=[88605], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 63, max= 384, per=26.08%, avg=248.58, stdev=75.77, samples=50 iops : min= 3, max= 24, avg=14.88, stdev= 4.80, samples=50 lat (usec) : 250=1.43%, 500=1.17% lat (msec) : 4=0.26%, 10=2.47%, 20=16.41%, 50=62.24%, 100=15.89% lat (msec) : 250=0.13% cpu : usr=0.06%, sys=28.92%, ctx=3844, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194375: Sun Aug 16 23:21:40 2026 read: IOPS=14, BW=227KiB/s (232kB/s)(5744KiB/25303msec) clat (usec): min=36, max=107450, avg=34576.51, stdev=14653.23 lat (usec): min=37, max=107451, avg=34577.32, stdev=14653.19 clat percentiles (usec): | 1.00th=[ 210], 5.00th=[ 15008], 10.00th=[ 18482], 20.00th=[ 23462], | 30.00th=[ 27395], 40.00th=[ 30802], 50.00th=[ 33817], 60.00th=[ 36963], | 70.00th=[ 41157], 80.00th=[ 45351], 90.00th=[ 51643], 95.00th=[ 59507], | 99.00th=[ 80217], 99.50th=[ 99091], 99.90th=[107480], 99.95th=[107480], | 99.99th=[107480] bw ( KiB/s): min= 49, max= 383, per=25.20%, avg=228.28, stdev=73.60, samples=50 iops : min= 3, max= 23, avg=13.60, stdev= 4.61, samples=50 write: IOPS=16, BW=259KiB/s (265kB/s)(6544KiB/25303msec); 0 zone resets clat (usec): min=3868, max=90740, avg=31171.06, stdev=16672.84 lat (usec): min=3869, max=90741, avg=31172.17, stdev=16672.85 clat percentiles (usec): | 1.00th=[ 7832], 5.00th=[ 9765], 10.00th=[11600], 20.00th=[16909], | 30.00th=[19792], 40.00th=[24249], 50.00th=[27919], 60.00th=[32900], | 70.00th=[38536], 80.00th=[44303], 90.00th=[56361], 95.00th=[63701], | 99.00th=[76022], 99.50th=[80217], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 95, max= 414, per=27.08%, avg=258.04, stdev=76.70, samples=50 iops : min= 5, max= 25, avg=15.46, stdev= 4.85, samples=50 lat (usec) : 50=0.13%, 100=0.13%, 250=0.78%, 500=0.52% lat (msec) : 2=0.13%, 4=0.13%, 10=3.12%, 20=16.80%, 50=64.58% lat (msec) : 100=13.54%, 250=0.13% cpu : usr=0.04%, sys=29.81%, ctx=3702, 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=194377: Sun Aug 16 23:21:40 2026 read: IOPS=14, BW=237KiB/s (242kB/s)(6256KiB/26424msec) clat (usec): min=192, max=94259, avg=34729.00, stdev=15100.88 lat (usec): min=193, max=94260, avg=34731.88, stdev=15098.99 clat percentiles (usec): | 1.00th=[ 235], 5.00th=[14353], 10.00th=[17957], 20.00th=[22414], | 30.00th=[25822], 40.00th=[29754], 50.00th=[33817], 60.00th=[36963], | 70.00th=[41157], 80.00th=[46400], 90.00th=[54789], 95.00th=[60031], | 99.00th=[78119], 99.50th=[92799], 99.90th=[93848], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 95, max= 437, per=26.18%, avg=237.17, stdev=82.79, samples=52 iops : min= 5, max= 27, avg=14.15, stdev= 5.19, samples=52 write: IOPS=14, BW=228KiB/s (234kB/s)(6032KiB/26424msec); 0 zone resets clat (msec): min=6, max=101, avg=33.72, stdev=18.63 lat (msec): min=6, max=101, avg=33.73, stdev=18.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 48], 90.00th=[ 59], 95.00th=[ 72], | 99.00th=[ 96], 99.50th=[ 102], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 63, max= 510, per=23.61%, avg=224.98, stdev=78.14, samples=52 iops : min= 3, max= 31, avg=13.38, stdev= 4.86, samples=52 lat (usec) : 250=0.65%, 500=0.78% lat (msec) : 10=2.60%, 20=14.32%, 50=66.41%, 100=14.97%, 250=0.26% cpu : usr=0.05%, sys=29.15%, ctx=3952, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194379: Sun Aug 16 23:21:40 2026 read: IOPS=15, BW=243KiB/s (249kB/s)(6032KiB/24851msec) clat (usec): min=74, max=81613, avg=33839.22, stdev=15070.18 lat (usec): min=74, max=81614, avg=33839.89, stdev=15070.16 clat percentiles (usec): | 1.00th=[ 172], 5.00th=[ 1057], 10.00th=[17171], 20.00th=[22676], | 30.00th=[26084], 40.00th=[29492], 50.00th=[32900], 60.00th=[36963], | 70.00th=[40109], 80.00th=[45876], 90.00th=[53216], 95.00th=[60556], | 99.00th=[73925], 99.50th=[79168], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 127, max= 383, per=26.62%, avg=241.18, stdev=59.33, samples=49 iops : min= 7, max= 23, avg=14.41, stdev= 3.76, samples=49 write: IOPS=15, BW=252KiB/s (258kB/s)(6256KiB/24851msec); 0 zone resets clat (usec): min=4338, max=71613, avg=30639.30, stdev=15680.38 lat (usec): min=4341, max=71614, avg=30640.47, stdev=15680.58 clat percentiles (usec): | 1.00th=[ 7046], 5.00th=[ 9634], 10.00th=[11994], 20.00th=[15795], | 30.00th=[20055], 40.00th=[23987], 50.00th=[27395], 60.00th=[32637], | 70.00th=[38536], 80.00th=[45876], 90.00th=[52691], 95.00th=[60031], | 99.00th=[69731], 99.50th=[71828], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 126, max= 509, per=26.44%, avg=252.02, stdev=76.45, samples=49 iops : min= 7, max= 31, avg=15.10, stdev= 4.81, samples=49 lat (usec) : 100=0.13%, 250=1.30%, 500=0.91% lat (msec) : 2=0.13%, 10=2.86%, 20=17.97%, 50=63.67%, 100=13.02% cpu : usr=0.05%, sys=29.67%, ctx=3684, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=906KiB/s (928kB/s), 227KiB/s-243KiB/s (232kB/s-249kB/s), io=23.4MiB (24.5MB), run=24851-26424msec WRITE: bw=954KiB/s (977kB/s), 228KiB/s-259KiB/s (234kB/s-265kB/s), io=24.6MiB (25.8MB), run=24851-26424msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194372: Sun Aug 16 23:21:41 2026 read: IOPS=13, BW=218KiB/s (223kB/s)(5920KiB/27154msec) clat (msec): min=7, max=116, avg=31.83, stdev=19.23 lat (msec): min=7, max=116, avg=31.83, stdev=19.23 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 44], 90.00th=[ 58], 95.00th=[ 70], | 99.00th=[ 100], 99.50th=[ 116], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 96, max= 448, per=24.26%, avg=212.25, stdev=82.81, samples=53 iops : min= 6, max= 28, avg=12.70, stdev= 5.22, samples=53 write: IOPS=14, BW=235KiB/s (240kB/s)(6368KiB/27154msec); 0 zone resets clat (msec): min=8, max=114, avg=38.35, stdev=19.45 lat (msec): min=8, max=114, avg=38.36, stdev=19.45 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 46], 80.00th=[ 55], 90.00th=[ 69], 95.00th=[ 75], | 99.00th=[ 96], 99.50th=[ 115], 99.90th=[ 115], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 96, max= 544, per=25.13%, avg=231.23, stdev=74.20, samples=53 iops : min= 6, max= 34, avg=13.89, stdev= 4.74, samples=53 lat (msec) : 10=1.17%, 20=21.88%, 50=56.90%, 100=19.27%, 250=0.78% cpu : usr=0.04%, sys=17.07%, ctx=2437, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194374: Sun Aug 16 23:21:41 2026 read: IOPS=13, BW=210KiB/s (215kB/s)(5744KiB/27362msec) clat (msec): min=3, max=105, avg=33.01, stdev=20.13 lat (msec): min=3, max=105, avg=33.01, stdev=20.13 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 10], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 39], 80.00th=[ 48], 90.00th=[ 65], 95.00th=[ 77], | 99.00th=[ 91], 99.50th=[ 92], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 63, max= 544, per=23.71%, avg=207.43, stdev=90.14, samples=54 iops : min= 3, max= 34, avg=12.41, stdev= 5.67, samples=54 write: IOPS=14, BW=239KiB/s (245kB/s)(6544KiB/27362msec); 0 zone resets clat (msec): min=5, max=139, avg=37.83, stdev=21.45 lat (msec): min=5, max=139, avg=37.83, stdev=21.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 46], 80.00th=[ 54], 90.00th=[ 67], 95.00th=[ 82], | 99.00th=[ 100], 99.50th=[ 111], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 95, max= 672, per=25.60%, avg=235.56, stdev=102.44, samples=54 iops : min= 5, max= 42, avg=14.17, stdev= 6.57, samples=54 lat (msec) : 4=0.13%, 10=4.04%, 20=22.92%, 50=51.30%, 100=20.96% lat (msec) : 250=0.65% cpu : usr=0.05%, sys=16.69%, ctx=2343, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194376: Sun Aug 16 23:21:41 2026 read: IOPS=14, BW=229KiB/s (234kB/s)(6256KiB/27363msec) clat (msec): min=4, max=108, avg=33.40, stdev=21.17 lat (msec): min=4, max=108, avg=33.40, stdev=21.17 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 48], 90.00th=[ 66], 95.00th=[ 83], | 99.00th=[ 96], 99.50th=[ 101], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 95, max= 736, per=26.14%, avg=228.72, stdev=120.03, samples=54 iops : min= 5, max= 46, avg=13.74, stdev= 7.59, samples=54 write: IOPS=13, BW=220KiB/s (226kB/s)(6032KiB/27363msec); 0 zone resets clat (msec): min=6, max=144, avg=37.67, stdev=20.56 lat (msec): min=6, max=144, avg=37.68, stdev=20.56 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 55], 90.00th=[ 64], 95.00th=[ 75], | 99.00th=[ 95], 99.50th=[ 125], 99.90th=[ 146], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 95, max= 608, per=23.51%, avg=216.26, stdev=80.13, samples=54 iops : min= 5, max= 38, avg=12.96, stdev= 5.13, samples=54 lat (msec) : 10=2.73%, 20=23.31%, 50=52.21%, 100=21.22%, 250=0.52% cpu : usr=0.05%, sys=16.61%, ctx=2413, 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=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=194378: Sun Aug 16 23:21:41 2026 read: IOPS=13, BW=223KiB/s (228kB/s)(6032KiB/27068msec) clat (msec): min=4, max=121, avg=31.22, stdev=19.52 lat (msec): min=4, max=121, avg=31.22, stdev=19.52 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 34], 80.00th=[ 42], 90.00th=[ 60], 95.00th=[ 74], | 99.00th=[ 102], 99.50th=[ 109], 99.90th=[ 122], 99.95th=[ 122], | 99.99th=[ 122] bw ( KiB/s): min= 31, max= 576, per=25.00%, avg=218.74, stdev=85.78, samples=53 iops : min= 1, max= 36, avg=13.09, stdev= 5.45, samples=53 write: IOPS=14, BW=231KiB/s (237kB/s)(6256KiB/27068msec); 0 zone resets clat (msec): min=7, max=110, avg=38.90, stdev=20.71 lat (msec): min=7, max=110, avg=38.90, stdev=20.71 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 56], 90.00th=[ 69], 95.00th=[ 80], | 99.00th=[ 106], 99.50th=[ 108], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 126, max= 480, per=24.78%, avg=227.98, stdev=75.62, samples=53 iops : min= 7, max= 30, avg=13.68, stdev= 4.79, samples=53 lat (msec) : 10=2.08%, 20=22.40%, 50=54.95%, 100=19.40%, 250=1.17% cpu : usr=0.04%, sys=17.15%, ctx=2489, 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=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=875KiB/s (896kB/s), 210KiB/s-229KiB/s (215kB/s-234kB/s), io=23.4MiB (24.5MB), run=27068-27363msec WRITE: bw=921KiB/s (943kB/s), 220KiB/s-239KiB/s (226kB/s-245kB/s), io=24.6MiB (25.8MB), run=27068-27363msec 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=194393: Sun Aug 16 23:21:54 2026 read: IOPS=1, BW=1557KiB/s (1594kB/s)(7168KiB/4604msec) clat (msec): min=186, max=386, avg=308.66, stdev=60.01 lat (msec): min=186, max=386, avg=308.66, stdev=60.01 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 334], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 2035, max= 2756, per=54.44%, avg=2184.20, stdev=319.68, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=1, BW=1112KiB/s (1139kB/s)(5120KiB/4604msec); 0 zone resets clat (msec): min=277, max=741, avg=488.32, stdev=214.96 lat (msec): min=277, max=741, avg=488.41, stdev=214.98 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1845, max= 2048, per=34.72%, avg=1950.40, stdev=97.70, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=8.33%, 500=75.00%, 750=16.67% cpu : usr=0.02%, sys=56.07%, ctx=1308, 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=194394: Sun Aug 16 23:21:54 2026 read: IOPS=0, BW=401KiB/s (411kB/s)(2048KiB/5104msec) clat (msec): min=137, max=240, avg=189.34, stdev=72.75 lat (msec): min=137, max=240, avg=189.35, stdev=72.75 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 1380, max= 2043, per=42.66%, avg=1711.50, stdev=468.81, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2006KiB/s (2054kB/s)(10.0MiB/5104msec); 0 zone resets clat (msec): min=118, max=1050, avg=471.12, stdev=350.89 lat (msec): min=118, max=1050, avg=471.19, stdev=350.88 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 169], | 30.00th=[ 192], 40.00th=[ 251], 50.00th=[ 326], 60.00th=[ 368], | 70.00th=[ 414], 80.00th=[ 885], 90.00th=[ 944], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 2043, max= 5647, per=62.34%, avg=3501.40, stdev=1517.57, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.48, samples=5 lat (msec) : 250=41.67%, 500=33.33%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=42.41%, ctx=448, 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=194395: Sun Aug 16 23:21:54 2026 read: IOPS=1, BW=1331KiB/s (1363kB/s)(6144KiB/4615msec) clat (msec): min=60, max=409, avg=201.13, stdev=145.55 lat (msec): min=60, max=409, avg=201.14, stdev=145.55 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 82], | 30.00th=[ 82], 40.00th=[ 116], 50.00th=[ 116], 60.00th=[ 194], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 1845, max= 4096, per=62.05%, avg=2489.25, stdev=1074.30, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1331KiB/s (1363kB/s)(6144KiB/4615msec); 0 zone resets clat (msec): min=252, max=793, avg=567.71, stdev=214.37 lat (msec): min=252, max=793, avg=567.76, stdev=214.38 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 617], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1365, max= 2043, per=33.55%, avg=1884.33, stdev=264.76, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 100=16.67%, 250=16.67%, 500=33.33%, 750=16.67%, 1000=16.67% cpu : usr=0.02%, sys=40.59%, ctx=374, 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=194396: Sun Aug 16 23:21:54 2026 read: IOPS=1, BW=1091KiB/s (1117kB/s)(5120KiB/4695msec) clat (usec): min=496, max=469197, avg=151175.26, stdev=216281.53 lat (usec): min=497, max=469199, avg=151176.31, stdev=216281.57 clat percentiles (usec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[ 619], 60.00th=[ 619], | 70.00th=[283116], 80.00th=[283116], 90.00th=[467665], 95.00th=[467665], | 99.00th=[467665], 99.50th=[467665], 99.90th=[467665], 99.95th=[467665], | 99.99th=[467665] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1527KiB/s (1563kB/s)(7168KiB/4695msec); 0 zone resets clat (msec): min=234, max=1070, avg=562.24, stdev=335.14 lat (msec): min=234, max=1070, avg=562.31, stdev=335.16 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 338], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 430], 60.00th=[ 485], | 70.00th=[ 485], 80.00th=[ 1011], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 1398, max= 3703, per=39.02%, avg=2191.60, stdev=881.10, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 250=8.33%, 500=50.00%, 2000=16.67% cpu : usr=0.00%, sys=47.85%, ctx=168, 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=4013KiB/s (4109kB/s), 401KiB/s-1557KiB/s (411kB/s-1594kB/s), io=20.0MiB (20.0MB), run=4604-5104msec WRITE: bw=5618KiB/s (5752kB/s), 1112KiB/s-2006KiB/s (1139kB/s-2054kB/s), io=28.0MiB (29.4MB), run=4604-5104msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194388: Sun Aug 16 23:21:54 2026 read: IOPS=1, BW=1389KiB/s (1423kB/s)(7168KiB/5159msec) clat (msec): min=64, max=1851, avg=448.46, stdev=657.86 lat (msec): min=64, max=1851, avg=448.47, stdev=657.86 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 80], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 101], 60.00th=[ 253], | 70.00th=[ 253], 80.00th=[ 693], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 2027, max= 5036, per=99.72%, avg=3719.67, stdev=1539.40, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=0, BW=992KiB/s (1016kB/s)(5120KiB/5159msec); 0 zone resets clat (msec): min=114, max=693, avg=401.07, stdev=261.83 lat (msec): min=115, max=693, avg=401.16, stdev=261.82 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 115], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1973, max= 4096, per=48.58%, avg=2537.00, stdev=1039.83, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=14.68%, ctx=396, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194389: Sun Aug 16 23:21:54 2026 read: IOPS=0, BW=373KiB/s (382kB/s)(2048KiB/5490msec) clat (msec): min=165, max=930, avg=548.04, stdev=540.99 lat (msec): min=165, max=930, avg=548.04, stdev=540.99 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 927], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1667, max= 2048, per=49.80%, avg=1857.50, stdev=269.41, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1865KiB/s (1910kB/s)(10.0MiB/5490msec); 0 zone resets clat (msec): min=60, max=987, avg=435.70, stdev=320.34 lat (msec): min=60, max=987, avg=435.79, stdev=320.33 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 107], | 30.00th=[ 207], 40.00th=[ 213], 50.00th=[ 241], 60.00th=[ 502], | 70.00th=[ 506], 80.00th=[ 760], 90.00th=[ 776], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 2031, max= 4096, per=54.27%, avg=2833.80, stdev=1085.08, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.14, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 750=16.67%, 1000=33.33% cpu : usr=0.04%, sys=19.62%, ctx=224, 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=194390: Sun Aug 16 23:21:54 2026 read: IOPS=1, BW=1191KiB/s (1219kB/s)(6144KiB/5160msec) clat (msec): min=104, max=1126, avg=439.92, stdev=455.49 lat (msec): min=104, max=1126, avg=439.92, stdev=455.49 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 199], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 2031, max= 4096, per=90.02%, avg=3357.67, stdev=1151.37, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1191KiB/s (1219kB/s)(6144KiB/5160msec); 0 zone resets clat (msec): min=99, max=820, avg=414.79, stdev=290.74 lat (msec): min=99, max=820, avg=414.87, stdev=290.75 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 107], | 30.00th=[ 107], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 514], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1973, max= 3351, per=43.86%, avg=2290.20, stdev=593.81, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=8.33%, 750=16.67%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=15.25%, ctx=136, 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=194391: Sun Aug 16 23:21:54 2026 read: IOPS=1, BW=1103KiB/s (1130kB/s)(5120KiB/4641msec) clat (msec): min=142, max=522, avg=264.20, stdev=169.77 lat (msec): min=142, max=522, avg=264.20, stdev=169.77 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 157], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 4096, max= 4096, per=100.00%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1544KiB/s (1582kB/s)(7168KiB/4641msec); 0 zone resets clat (msec): min=121, max=1033, avg=470.19, stdev=354.82 lat (msec): min=121, max=1033, avg=470.26, stdev=354.81 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 142], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 321], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 743], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1973, max= 3385, per=43.97%, avg=2296.20, stdev=609.43, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (msec) : 250=50.00%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=19.94%, ctx=189, 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=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=3730KiB/s (3820kB/s), 373KiB/s-1389KiB/s (382kB/s-1423kB/s), io=20.0MiB (20.0MB), run=4641-5490msec WRITE: bw=5223KiB/s (5348kB/s), 992KiB/s-1865KiB/s (1016kB/s-1910kB/s), io=28.0MiB (29.4MB), run=4641-5490msec 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=194407: Sun Aug 16 23:22:05 2026 read: IOPS=1, BW=4947KiB/s (5066kB/s)(12.0MiB/2484msec) clat (msec): min=701, max=896, avg=820.27, stdev=104.29 lat (msec): min=701, max=896, avg=820.27, stdev=104.29 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=52.48%, ctx=2611, 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=194408: Sun Aug 16 23:22:05 2026 read: IOPS=0, BW=1541KiB/s (1578kB/s)(4096KiB/2658msec) clat (nsec): min=844535k, max=844535k, avg=844534830.00, stdev= 0.00 lat (nsec): min=844537k, max=844537k, avg=844537009.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 844], 5.00th=[ 844], 10.00th=[ 844], 20.00th=[ 844], | 30.00th=[ 844], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3082KiB/s (3156kB/s)(8192KiB/2658msec); 0 zone resets clat (msec): min=682, max=1093, avg=888.15, stdev=290.24 lat (msec): min=683, max=1093, avg=888.41, stdev=290.25 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 1099], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8192, max= 8192, per=79.78%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=24.28%, ctx=973, 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=194409: Sun Aug 16 23:22:05 2026 write: IOPS=0, BW=3851KiB/s (3943kB/s)(12.0MiB/3191msec); 0 zone resets clat (msec): min=178, max=2275, avg=1054.95, stdev=1089.73 lat (msec): min=178, max=2275, avg=1055.26, stdev=1089.64 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 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= 8015, max= 8015, per=78.06%, avg=8015.00, 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=0.03%, sys=11.57%, ctx=68, 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=194410: Sun Aug 16 23:22:05 2026 write: IOPS=1, BW=4292KiB/s (4395kB/s)(12.0MiB/2863msec); 0 zone resets clat (msec): min=524, max=1552, avg=934.46, stdev=544.44 lat (msec): min=524, max=1552, avg=934.69, stdev=544.34 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8175, max= 8192, per=79.70%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=17.54%, ctx=111, 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=6164KiB/s (6312kB/s), 1541KiB/s-4947KiB/s (1578kB/s-5066kB/s), io=16.0MiB (16.8MB), run=2484-2658msec WRITE: bw=10.0MiB/s (10.5MB/s), 3082KiB/s-4292KiB/s (3156kB/s-4395kB/s), io=32.0MiB (33.6MB), run=2658-3191msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194403: Sun Aug 16 23:22:05 2026 read: IOPS=1, BW=4571KiB/s (4681kB/s)(12.0MiB/2688msec) clat (msec): min=758, max=1015, avg=871.32, stdev=131.51 lat (msec): min=758, max=1015, avg=871.32, stdev=131.51 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7433, max= 8159, per=100.00%, avg=7796.00, stdev=513.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=18.94%, ctx=100, 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=194404: Sun Aug 16 23:22:05 2026 read: IOPS=0, BW=1394KiB/s (1427kB/s)(4096KiB/2939msec) clat (nsec): min=1378.4M, max=1378.4M, avg=1378385299.00, stdev= 0.00 lat (nsec): min=1378.4M, max=1378.4M, avg=1378386394.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1385], 5.00th=[ 1385], 10.00th=[ 1385], 20.00th=[ 1385], | 30.00th=[ 1385], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7433, max= 7433, per=100.00%, avg=7433.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2787KiB/s (2854kB/s)(8192KiB/2939msec); 0 zone resets clat (msec): min=581, max=902, avg=742.02, stdev=227.46 lat (msec): min=581, max=903, avg=742.32, stdev=227.47 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 902], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8159, max= 8159, per=82.22%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=16.10%, ctx=91, 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=194405: Sun Aug 16 23:22:05 2026 write: IOPS=0, BW=3721KiB/s (3811kB/s)(12.0MiB/3302msec); 0 zone resets clat (msec): min=85, max=2971, avg=1087.78, stdev=1632.50 lat (msec): min=86, max=2971, avg=1088.11, stdev=1632.55 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 2970], 80.00th=[ 2970], 90.00th=[ 2970], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 250=33.33%, >=2000=33.33% cpu : usr=0.09%, sys=11.15%, ctx=69, 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=194406: Sun Aug 16 23:22:05 2026 write: IOPS=1, BW=4508KiB/s (4616kB/s)(12.0MiB/2726msec); 0 zone resets clat (msec): min=217, max=1910, avg=890.24, stdev=898.48 lat (msec): min=217, max=1910, avg=890.57, stdev=898.44 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 8159, max= 8192, per=82.39%, 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%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=19.74%, ctx=100, 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=5575KiB/s (5708kB/s), 1394KiB/s-4571KiB/s (1427kB/s-4681kB/s), io=16.0MiB (16.8MB), run=2688-2939msec WRITE: bw=9924KiB/s (10.2MB/s), 2787KiB/s-4508KiB/s (2854kB/s-4616kB/s), io=32.0MiB (33.6MB), run=2726-3302msec