== sanity test 398b: DIO and buffer IO race ============== 17:24:04 (1789680244) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.70566 s, 10.7 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=179771: Thu Sep 17 17:26:13 2026 read: IOPS=13, BW=53.2KiB/s (54.5kB/s)(5992KiB/112559msec) clat (usec): min=39, max=758767, avg=41002.50, stdev=32853.83 lat (usec): min=40, max=758768, avg=41003.80, stdev=32854.14 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 11076], 10.00th=[ 15533], 20.00th=[ 20317], | 30.00th=[ 24773], 40.00th=[ 28967], 50.00th=[ 34341], 60.00th=[ 40109], | 70.00th=[ 47449], 80.00th=[ 56886], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[141558], 99.50th=[173016], 99.90th=[221250], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 127, per=25.35%, avg=53.24, stdev=21.26, samples=221 iops : min= 1, max= 31, avg=12.67, stdev= 5.35, samples=221 write: IOPS=13, BW=55.9KiB/s (57.3kB/s)(6296KiB/112559msec); 0 zone resets clat (usec): min=967, max=327396, avg=32272.51, stdev=34058.01 lat (usec): min=967, max=327397, avg=32274.75, stdev=34059.57 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1352], 10.00th=[ 1795], 20.00th=[ 3752], | 30.00th=[ 6652], 40.00th=[ 15270], 50.00th=[ 22414], 60.00th=[ 30802], | 70.00th=[ 41681], 80.00th=[ 55837], 90.00th=[ 77071], 95.00th=[101188], | 99.00th=[141558], 99.50th=[179307], 99.90th=[208667], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7, max= 118, per=25.27%, avg=55.60, stdev=23.61, samples=222 iops : min= 1, max= 29, avg=13.27, stdev= 5.92, samples=222 lat (usec) : 50=0.20%, 100=1.27%, 250=0.13%, 500=0.03%, 1000=0.10% lat (msec) : 2=5.83%, 4=5.01%, 10=7.10%, 20=13.61%, 50=41.34% lat (msec) : 100=21.03%, 250=4.30%, 500=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.70%, ctx=6804, 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=179772: Thu Sep 17 17:26:13 2026 read: IOPS=13, BW=52.2KiB/s (53.4kB/s)(5940KiB/113862msec) clat (usec): min=33, max=743808, avg=42986.84, stdev=34475.07 lat (usec): min=33, max=743808, avg=42989.63, stdev=34473.75 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 11994], 10.00th=[ 15795], 20.00th=[ 20841], | 30.00th=[ 25822], 40.00th=[ 30278], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 58459], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[156238], 99.50th=[187696], 99.90th=[265290], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 15, max= 111, per=24.63%, avg=51.71, stdev=18.52, samples=224 iops : min= 3, max= 27, avg=12.29, stdev= 4.65, samples=224 write: IOPS=13, BW=55.8KiB/s (57.1kB/s)(6348KiB/113862msec); 0 zone resets clat (usec): min=986, max=381161, avg=31288.11, stdev=34617.96 lat (usec): min=987, max=381162, avg=31293.46, stdev=34616.50 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1647], 20.00th=[ 3523], | 30.00th=[ 6587], 40.00th=[ 13698], 50.00th=[ 20841], 60.00th=[ 29754], | 70.00th=[ 40109], 80.00th=[ 52691], 90.00th=[ 72877], 95.00th=[ 96994], | 99.00th=[154141], 99.50th=[179307], 99.90th=[299893], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 7, max= 198, per=25.07%, avg=55.16, stdev=26.73, samples=224 iops : min= 1, max= 49, avg=13.16, stdev= 6.73, samples=224 lat (usec) : 50=0.46%, 100=0.88%, 250=0.10%, 500=0.10%, 1000=0.10% lat (msec) : 2=6.18%, 4=5.18%, 10=7.52%, 20=13.22%, 50=40.20% lat (msec) : 100=21.71%, 250=4.23%, 500=0.10%, 750=0.03% cpu : usr=0.08%, sys=5.42%, ctx=6745, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179773: Thu Sep 17 17:26:13 2026 read: IOPS=13, BW=54.7KiB/s (56.0kB/s)(6028KiB/110140msec) clat (usec): min=34, max=319805, avg=39528.84, stdev=26838.72 lat (usec): min=34, max=319806, avg=39532.18, stdev=26838.77 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10945], 10.00th=[ 14877], 20.00th=[ 19792], | 30.00th=[ 24511], 40.00th=[ 28967], 50.00th=[ 34341], 60.00th=[ 40109], | 70.00th=[ 46400], 80.00th=[ 55313], 90.00th=[ 69731], 95.00th=[ 90702], | 99.00th=[129500], 99.50th=[149947], 99.90th=[221250], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 111, per=26.04%, avg=54.68, stdev=20.36, samples=216 iops : min= 1, max= 27, avg=13.03, stdev= 5.12, samples=216 write: IOPS=14, BW=56.8KiB/s (58.2kB/s)(6260KiB/110140msec); 0 zone resets clat (usec): min=993, max=709324, avg=32091.66, stdev=38138.96 lat (usec): min=994, max=709325, avg=32093.35, stdev=38138.80 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1237], 10.00th=[ 1893], 20.00th=[ 4080], | 30.00th=[ 7373], 40.00th=[ 15270], 50.00th=[ 23462], 60.00th=[ 31065], | 70.00th=[ 40109], 80.00th=[ 52167], 90.00th=[ 71828], 95.00th=[ 92799], | 99.00th=[154141], 99.50th=[177210], 99.90th=[459277], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 128, per=25.55%, avg=56.22, stdev=22.65, samples=218 iops : min= 1, max= 32, avg=13.42, stdev= 5.69, samples=218 lat (usec) : 50=0.36%, 100=1.30%, 250=0.10%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=5.63%, 4=4.49%, 10=7.88%, 20=12.89%, 50=43.49% lat (msec) : 100=20.05%, 250=3.55%, 500=0.10%, 750=0.03% cpu : usr=0.08%, sys=5.57%, ctx=6731, 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=179774: Thu Sep 17 17:26:13 2026 read: IOPS=13, BW=53.4KiB/s (54.7kB/s)(6052KiB/113342msec) clat (usec): min=36, max=757086, avg=40411.28, stdev=32103.06 lat (usec): min=36, max=757087, avg=40419.36, stdev=32102.51 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 9241], 10.00th=[ 15270], 20.00th=[ 20055], | 30.00th=[ 24511], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 40633], | 70.00th=[ 47973], 80.00th=[ 56886], 90.00th=[ 72877], 95.00th=[ 89654], | 99.00th=[133694], 99.50th=[149947], 99.90th=[238027], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 104, per=25.37%, avg=53.27, stdev=20.84, samples=222 iops : min= 1, max= 26, avg=12.68, stdev= 5.23, samples=222 write: IOPS=13, BW=55.0KiB/s (56.3kB/s)(6236KiB/113342msec); 0 zone resets clat (usec): min=972, max=374040, avg=33234.07, stdev=35708.48 lat (usec): min=972, max=374041, avg=33238.17, stdev=35707.28 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1221], 10.00th=[ 1729], 20.00th=[ 3523], | 30.00th=[ 7308], 40.00th=[ 16188], 50.00th=[ 24249], 60.00th=[ 32113], | 70.00th=[ 42206], 80.00th=[ 55837], 90.00th=[ 78119], 95.00th=[ 99091], | 99.00th=[164627], 99.50th=[183501], 99.90th=[283116], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 127, per=24.80%, avg=54.56, stdev=22.17, samples=223 iops : min= 1, max= 31, avg=13.01, stdev= 5.57, samples=223 lat (usec) : 50=0.49%, 100=1.46%, 250=0.16%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=5.73%, 4=5.31%, 10=6.48%, 20=12.30%, 50=42.25% lat (msec) : 100=21.52%, 250=3.94%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=5.49%, ctx=6775, 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=211KiB/s (216kB/s), 52.2KiB/s-54.7KiB/s (53.4kB/s-56.0kB/s), io=23.4MiB (24.6MB), run=110140-113862msec WRITE: bw=221KiB/s (226kB/s), 55.0KiB/s-56.8KiB/s (56.3kB/s-58.2kB/s), io=24.6MiB (25.7MB), run=110140-113862msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179776: Thu Sep 17 17:26:49 2026 read: IOPS=10, BW=40.4KiB/s (41.4kB/s)(5992KiB/148250msec) clat (msec): min=5, max=834, avg=38.21, stdev=41.61 lat (msec): min=5, max=834, avg=38.22, stdev=41.61 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 54], 90.00th=[ 86], 95.00th=[ 113], | 99.00th=[ 171], 99.50th=[ 218], 99.90th=[ 439], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 168, per=25.19%, avg=40.55, stdev=28.68, samples=287 iops : min= 1, max= 42, avg= 9.48, stdev= 7.20, samples=287 write: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6296KiB/148250msec); 0 zone resets clat (msec): min=9, max=357, avg=57.75, stdev=41.14 lat (msec): min=9, max=357, avg=57.75, stdev=41.14 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 54], | 70.00th=[ 67], 80.00th=[ 84], 90.00th=[ 114], 95.00th=[ 136], | 99.00th=[ 207], 99.50th=[ 251], 99.90th=[ 330], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 128, per=24.97%, avg=41.94, stdev=25.61, samples=292 iops : min= 1, max= 32, avg= 9.83, stdev= 6.43, samples=292 lat (msec) : 10=3.42%, 20=18.36%, 50=45.28%, 100=22.27%, 250=10.25% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=1.88%, ctx=4640, 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=179777: Thu Sep 17 17:26:49 2026 read: IOPS=9, BW=39.9KiB/s (40.8kB/s)(5940KiB/149052msec) clat (msec): min=5, max=743, avg=38.81, stdev=41.01 lat (msec): min=5, max=743, avg=38.82, stdev=41.01 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 55], 90.00th=[ 85], 95.00th=[ 117], | 99.00th=[ 184], 99.50th=[ 220], 99.90th=[ 309], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 175, per=24.99%, avg=40.24, stdev=27.98, samples=288 iops : min= 1, max= 43, avg= 9.41, stdev= 7.01, samples=288 write: IOPS=10, BW=42.6KiB/s (43.6kB/s)(6348KiB/149052msec); 0 zone resets clat (msec): min=10, max=547, avg=57.53, stdev=43.77 lat (msec): min=10, max=547, avg=57.53, stdev=43.77 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 84], 90.00th=[ 112], 95.00th=[ 140], | 99.00th=[ 209], 99.50th=[ 241], 99.90th=[ 414], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 135, per=25.37%, avg=42.62, stdev=26.39, samples=290 iops : min= 1, max= 33, avg=10.00, stdev= 6.62, samples=290 lat (msec) : 10=3.06%, 20=18.62%, 50=45.83%, 100=22.27%, 250=9.93% lat (msec) : 500=0.23%, 750=0.07% cpu : usr=0.07%, sys=1.93%, ctx=4795, 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=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=179778: Thu Sep 17 17:26:49 2026 read: IOPS=10, BW=40.5KiB/s (41.5kB/s)(6028KiB/148916msec) clat (msec): min=4, max=297, avg=37.42, stdev=35.06 lat (msec): min=4, max=297, avg=37.42, stdev=35.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 83], 95.00th=[ 118], | 99.00th=[ 174], 99.50th=[ 186], 99.90th=[ 241], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 151, per=25.05%, avg=40.34, stdev=28.17, samples=292 iops : min= 1, max= 37, avg= 9.43, stdev= 7.07, samples=292 write: IOPS=10, BW=42.0KiB/s (43.0kB/s)(6260KiB/148916msec); 0 zone resets clat (msec): min=9, max=760, avg=59.06, stdev=49.09 lat (msec): min=9, max=760, avg=59.06, stdev=49.09 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 84], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 232], 99.50th=[ 279], 99.90th=[ 550], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 150, per=25.11%, avg=42.19, stdev=26.94, samples=290 iops : min= 1, max= 37, avg= 9.89, stdev= 6.76, samples=290 lat (msec) : 10=4.20%, 20=17.87%, 50=45.90%, 100=21.35%, 250=10.29% lat (msec) : 500=0.33%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.94%, ctx=4799, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179779: Thu Sep 17 17:26:49 2026 read: IOPS=10, BW=40.8KiB/s (41.8kB/s)(6052KiB/148331msec) clat (msec): min=4, max=447, avg=37.74, stdev=35.81 lat (msec): min=4, max=447, avg=37.75, stdev=35.81 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 55], 90.00th=[ 84], 95.00th=[ 112], | 99.00th=[ 167], 99.50th=[ 186], 99.90th=[ 326], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 167, per=25.90%, avg=41.70, stdev=28.63, samples=282 iops : min= 1, max= 41, avg= 9.77, stdev= 7.20, samples=282 write: IOPS=10, BW=42.0KiB/s (43.1kB/s)(6236KiB/148331msec); 0 zone resets clat (msec): min=9, max=734, avg=58.44, stdev=44.71 lat (msec): min=9, max=734, avg=58.44, stdev=44.71 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 85], 90.00th=[ 112], 95.00th=[ 136], | 99.00th=[ 222], 99.50th=[ 243], 99.90th=[ 380], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 134, per=24.95%, avg=41.91, stdev=25.97, samples=289 iops : min= 1, max= 33, avg= 9.83, stdev= 6.51, samples=289 lat (msec) : 10=3.26%, 20=18.20%, 50=44.82%, 100=23.83%, 250=9.64% lat (msec) : 500=0.23%, 750=0.03% cpu : usr=0.06%, sys=1.93%, ctx=4674, 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=161KiB/s (165kB/s), 39.9KiB/s-40.8KiB/s (40.8kB/s-41.8kB/s), io=23.4MiB (24.6MB), run=148250-149052msec WRITE: bw=169KiB/s (173kB/s), 42.0KiB/s-42.6KiB/s (43.0kB/s-43.6kB/s), io=24.6MiB (25.7MB), run=148250-149052msec 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=179825: Thu Sep 17 17:27:24 2026 read: IOPS=13, BW=214KiB/s (219kB/s)(5920KiB/27711msec) clat (usec): min=39, max=147525, avg=37463.52, stdev=24840.08 lat (usec): min=40, max=147526, avg=37466.66, stdev=24838.96 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 61], 10.00th=[ 97], 20.00th=[ 20055], | 30.00th=[ 25297], 40.00th=[ 29230], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 44827], 80.00th=[ 54264], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[130548], 99.50th=[137364], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 63, max= 383, per=24.93%, avg=213.63, stdev=74.40, samples=54 iops : min= 3, max= 23, avg=12.54, stdev= 4.66, samples=54 write: IOPS=14, BW=230KiB/s (235kB/s)(6368KiB/27711msec); 0 zone resets clat (usec): min=1454, max=283417, avg=34155.92, stdev=32401.71 lat (usec): min=1456, max=283419, avg=34157.69, stdev=32401.74 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2057], 10.00th=[ 2999], 20.00th=[ 5211], | 30.00th=[ 9765], 40.00th=[ 18744], 50.00th=[ 26084], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 57410], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[137364], 99.50th=[137364], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 63, max= 508, per=25.61%, avg=230.74, stdev=87.69, samples=54 iops : min= 3, max= 31, avg=13.63, stdev= 5.50, samples=54 lat (usec) : 50=0.39%, 100=4.43%, 250=0.13%, 750=0.13%, 1000=0.13% lat (msec) : 2=2.21%, 4=5.08%, 10=8.46%, 20=9.77%, 50=43.49% lat (msec) : 100=22.40%, 250=3.26%, 500=0.13% cpu : usr=0.10%, sys=6.25%, ctx=1783, 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=179826: Thu Sep 17 17:27:24 2026 read: IOPS=13, BW=212KiB/s (217kB/s)(5744KiB/27092msec) clat (usec): min=36, max=191822, avg=41486.36, stdev=27727.93 lat (usec): min=37, max=191823, avg=41487.44, stdev=27727.95 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 938], 20.00th=[ 21103], | 30.00th=[ 26608], 40.00th=[ 32637], 50.00th=[ 39060], 60.00th=[ 43779], | 70.00th=[ 51119], 80.00th=[ 58459], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[128451], 99.50th=[166724], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 95, max= 434, per=24.67%, avg=211.45, stdev=65.51, samples=53 iops : min= 5, max= 27, avg=12.42, stdev= 4.20, samples=53 write: IOPS=15, BW=242KiB/s (247kB/s)(6544KiB/27092msec); 0 zone resets clat (usec): min=1418, max=190126, avg=29578.35, stdev=29393.16 lat (usec): min=1421, max=190127, avg=29582.72, stdev=29392.22 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2008], 10.00th=[ 2704], 20.00th=[ 4686], | 30.00th=[ 7701], 40.00th=[ 14877], 50.00th=[ 21365], 60.00th=[ 27919], | 70.00th=[ 38011], 80.00th=[ 51643], 90.00th=[ 67634], 95.00th=[ 88605], | 99.00th=[129500], 99.50th=[147850], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 63, max= 601, per=26.67%, avg=240.26, stdev=100.06, samples=53 iops : min= 3, max= 37, avg=14.23, stdev= 6.29, samples=53 lat (usec) : 50=0.52%, 100=3.52%, 250=0.39%, 1000=0.26% lat (msec) : 2=2.60%, 4=5.86%, 10=9.77%, 20=11.20%, 50=40.23% lat (msec) : 100=22.40%, 250=3.26% cpu : usr=0.08%, sys=6.33%, ctx=1772, 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=179827: Thu Sep 17 17:27:24 2026 read: IOPS=13, BW=224KiB/s (229kB/s)(6256KiB/27942msec) clat (usec): min=51, max=198599, avg=40409.72, stdev=28058.91 lat (usec): min=52, max=198600, avg=40415.45, stdev=28059.35 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 62], 10.00th=[ 124], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 31589], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 50070], 80.00th=[ 56886], 90.00th=[ 70779], 95.00th=[ 83362], | 99.00th=[147850], 99.50th=[166724], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 94, max= 319, per=26.07%, avg=223.40, stdev=65.97, samples=55 iops : min= 5, max= 19, avg=13.18, stdev= 4.17, samples=55 write: IOPS=13, BW=216KiB/s (221kB/s)(6032KiB/27942msec); 0 zone resets clat (usec): min=1309, max=178179, avg=31684.70, stdev=29367.47 lat (usec): min=1312, max=178182, avg=31686.81, stdev=29367.22 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2180], 10.00th=[ 3490], 20.00th=[ 6128], | 30.00th=[ 10683], 40.00th=[ 17433], 50.00th=[ 24773], 60.00th=[ 32900], | 70.00th=[ 40633], 80.00th=[ 49021], 90.00th=[ 70779], 95.00th=[ 90702], | 99.00th=[135267], 99.50th=[162530], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 31, max= 380, per=23.57%, avg=212.40, stdev=75.67, samples=55 iops : min= 1, max= 23, avg=12.49, stdev= 4.76, samples=55 lat (usec) : 100=4.56%, 250=0.91%, 500=0.26% lat (msec) : 2=1.95%, 4=3.78%, 10=8.46%, 20=10.94%, 50=44.14% lat (msec) : 100=21.61%, 250=3.39% cpu : usr=0.06%, sys=6.09%, ctx=1825, 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=179828: Thu Sep 17 17:27:24 2026 read: IOPS=14, BW=234KiB/s (239kB/s)(6032KiB/25801msec) clat (usec): min=38, max=183856, avg=37749.43, stdev=24899.37 lat (usec): min=39, max=183857, avg=37754.22, stdev=24898.88 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 114], 20.00th=[ 20841], | 30.00th=[ 25297], 40.00th=[ 30802], 50.00th=[ 34341], 60.00th=[ 39060], | 70.00th=[ 46400], 80.00th=[ 55837], 90.00th=[ 68682], 95.00th=[ 78119], | 99.00th=[106431], 99.50th=[162530], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 63, max= 443, per=27.14%, avg=232.58, stdev=75.99, samples=50 iops : min= 3, max= 27, avg=13.76, stdev= 4.80, samples=50 write: IOPS=15, BW=242KiB/s (248kB/s)(6256KiB/25801msec); 0 zone resets clat (usec): min=1412, max=145884, avg=28854.32, stdev=29001.16 lat (usec): min=1414, max=145886, avg=28862.32, stdev=29021.49 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1975], 10.00th=[ 3130], 20.00th=[ 5014], | 30.00th=[ 8586], 40.00th=[ 13042], 50.00th=[ 19006], 60.00th=[ 28181], | 70.00th=[ 35914], 80.00th=[ 49021], 90.00th=[ 67634], 95.00th=[ 85459], | 99.00th=[139461], 99.50th=[143655], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 31, max= 542, per=26.82%, avg=241.62, stdev=92.27, samples=50 iops : min= 1, max= 33, avg=14.32, stdev= 5.79, samples=50 lat (usec) : 50=0.26%, 100=4.56%, 250=0.13%, 500=0.13% lat (msec) : 2=2.73%, 4=5.86%, 10=9.24%, 20=12.63%, 50=42.19% lat (msec) : 100=19.79%, 250=2.47% cpu : usr=0.07%, sys=6.49%, ctx=1688, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=857KiB/s (878kB/s), 212KiB/s-234KiB/s (217kB/s-239kB/s), io=23.4MiB (24.5MB), run=25801-27942msec WRITE: bw=902KiB/s (924kB/s), 216KiB/s-242KiB/s (221kB/s-248kB/s), io=24.6MiB (25.8MB), run=25801-27942msec fio: pid=179820, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179820: Thu Sep 17 17:27:34 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(5552KiB/35835msec) clat (msec): min=7, max=201, avg=38.77, stdev=33.14 lat (msec): min=7, max=201, avg=38.77, stdev=33.14 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 58], 90.00th=[ 81], 95.00th=[ 113], | 99.00th=[ 144], 99.50th=[ 197], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 31, max= 445, per=24.41%, avg=154.51, stdev=94.06, samples=69 iops : min= 1, max= 27, avg= 8.87, stdev= 5.99, samples=69 write: IOPS=10, BW=167KiB/s (171kB/s)(5968KiB/35835msec); 0 zone resets clat (msec): min=11, max=289, avg=59.67, stdev=38.41 lat (msec): min=11, max=289, avg=59.68, stdev=38.41 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 49], 60.00th=[ 58], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 110], 95.00th=[ 140], | 99.00th=[ 178], 99.50th=[ 207], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 416, per=24.81%, avg=165.24, stdev=92.33, samples=70 iops : min= 1, max= 26, avg= 9.54, stdev= 5.88, samples=70 lat (msec) : 10=1.25%, 20=15.12%, 50=47.43%, 100=25.52%, 250=10.40% lat (msec) : 500=0.14% cpu : usr=0.05%, sys=2.01%, ctx=1102, majf=0, minf=20 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=348,373,0,0 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=179821: Thu Sep 17 17:27:34 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(5744KiB/37015msec) clat (msec): min=7, max=218, avg=38.37, stdev=34.67 lat (msec): min=7, max=218, avg=38.38, stdev=34.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 85], 95.00th=[ 111], | 99.00th=[ 180], 99.50th=[ 201], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 30, max= 447, per=24.39%, avg=154.38, stdev=100.57, samples=73 iops : min= 1, max= 27, avg= 8.86, stdev= 6.38, samples=73 write: IOPS=11, BW=177KiB/s (181kB/s)(6544KiB/37015msec); 0 zone resets clat (msec): min=14, max=339, avg=56.34, stdev=37.96 lat (msec): min=14, max=339, avg=56.34, stdev=37.96 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 52], | 70.00th=[ 65], 80.00th=[ 83], 90.00th=[ 112], 95.00th=[ 130], | 99.00th=[ 176], 99.50th=[ 194], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 509, per=26.48%, avg=176.34, stdev=104.16, samples=73 iops : min= 1, max= 31, avg=10.25, stdev= 6.62, samples=73 lat (msec) : 10=1.56%, 20=17.97%, 50=47.40%, 100=23.18%, 250=9.77% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.00%, ctx=1191, 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=179822: Thu Sep 17 17:27:34 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(6256KiB/36990msec) clat (msec): min=6, max=272, avg=37.85, stdev=34.63 lat (msec): min=6, max=272, avg=37.85, stdev=34.63 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 55], 90.00th=[ 86], 95.00th=[ 108], | 99.00th=[ 167], 99.50th=[ 222], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 638, per=26.76%, avg=169.37, stdev=125.14, samples=73 iops : min= 1, max= 39, avg= 9.81, stdev= 7.93, samples=73 write: IOPS=10, BW=163KiB/s (167kB/s)(6032KiB/36990msec); 0 zone resets clat (msec): min=14, max=268, avg=58.74, stdev=38.23 lat (msec): min=14, max=268, avg=58.75, stdev=38.23 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 68], 80.00th=[ 89], 90.00th=[ 110], 95.00th=[ 130], | 99.00th=[ 197], 99.50th=[ 218], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 414, per=24.32%, avg=161.97, stdev=90.85, samples=73 iops : min= 1, max= 25, avg= 9.34, stdev= 5.77, samples=73 lat (msec) : 10=3.12%, 20=17.84%, 50=45.18%, 100=23.44%, 250=10.16% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.96%, ctx=1192, 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=179823: Thu Sep 17 17:27:34 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(6032KiB/37202msec) clat (msec): min=6, max=277, avg=37.32, stdev=33.92 lat (msec): min=6, max=277, avg=37.32, stdev=33.92 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 38], 80.00th=[ 55], 90.00th=[ 88], 95.00th=[ 106], | 99.00th=[ 142], 99.50th=[ 203], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 479, per=25.61%, avg=162.10, stdev=110.82, samples=72 iops : min= 1, max= 29, avg= 9.36, stdev= 7.02, samples=72 write: IOPS=10, BW=168KiB/s (172kB/s)(6256KiB/37202msec); 0 zone resets clat (msec): min=13, max=342, avg=58.54, stdev=43.58 lat (msec): min=13, max=342, avg=58.55, stdev=43.58 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 68], 80.00th=[ 83], 90.00th=[ 116], 95.00th=[ 144], | 99.00th=[ 207], 99.50th=[ 284], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 447, per=24.87%, avg=165.62, stdev=102.10, samples=73 iops : min= 1, max= 27, avg= 9.56, stdev= 6.50, samples=73 lat (msec) : 10=2.21%, 20=20.31%, 50=45.83%, 100=21.35%, 250=9.77% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=2.12%, ctx=1198, 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=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=634KiB/s (649kB/s), 155KiB/s-169KiB/s (159kB/s-173kB/s), io=23.0MiB (24.1MB), run=35835-37202msec WRITE: bw=667KiB/s (683kB/s), 163KiB/s-177KiB/s (167kB/s-181kB/s), io=24.2MiB (25.4MB), run=35835-37202msec 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=179839: Thu Sep 17 17:27:45 2026 read: IOPS=2, BW=2287KiB/s (2342kB/s)(7168KiB/3134msec) clat (usec): min=500, max=283112, avg=172753.09, stdev=92389.72 lat (usec): min=501, max=283113, avg=172754.35, stdev=92389.88 clat percentiles (usec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[137364], | 30.00th=[168821], 40.00th=[168821], 50.00th=[173016], 60.00th=[183501], | 70.00th=[183501], 80.00th=[263193], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 1875, max= 4055, per=46.14%, avg=2982.50, stdev=1186.66, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1634KiB/s (1673kB/s)(5120KiB/3134msec); 0 zone resets clat (msec): min=176, max=493, avg=346.38, stdev=129.64 lat (msec): min=176, max=493, avg=346.48, stdev=129.65 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 1957, max= 4079, per=27.72%, avg=2508.75, stdev=1047.15, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=50.00% cpu : usr=0.00%, sys=15.90%, ctx=212, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179840: Thu Sep 17 17:27:45 2026 read: IOPS=0, BW=729KiB/s (747kB/s)(2048KiB/2809msec) clat (usec): min=492, max=322180, avg=161336.20, stdev=227467.98 lat (usec): min=493, max=322182, avg=161337.81, stdev=227468.66 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[ 494], | 30.00th=[ 494], 40.00th=[ 494], 50.00th=[ 494], 60.00th=[320865], | 70.00th=[320865], 80.00th=[320865], 90.00th=[320865], 95.00th=[320865], | 99.00th=[320865], 99.50th=[320865], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 1892, max= 2019, per=30.25%, avg=1955.50, stdev=89.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3645KiB/s (3733kB/s)(10.0MiB/2809msec); 0 zone resets clat (msec): min=98, max=747, avg=239.62, stdev=194.03 lat (msec): min=101, max=747, avg=240.23, stdev=193.85 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 113], | 30.00th=[ 124], 40.00th=[ 129], 50.00th=[ 157], 60.00th=[ 197], | 70.00th=[ 226], 80.00th=[ 279], 90.00th=[ 334], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 4039, max= 7922, per=65.69%, avg=5944.67, stdev=1942.49, samples=3 iops : min= 3, max= 7, avg= 5.00, stdev= 2.00, samples=3 lat (usec) : 500=8.33% lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=19.37%, ctx=157, 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=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=179841: Thu Sep 17 17:27:45 2026 read: IOPS=1, BW=1939KiB/s (1986kB/s)(6144KiB/3168msec) clat (usec): min=456, max=283754, avg=113375.16, stdev=120641.89 lat (usec): min=457, max=283756, avg=113376.28, stdev=120641.92 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[ 1745], | 30.00th=[ 1745], 40.00th=[ 46924], 50.00th=[ 46924], 60.00th=[114820], | 70.00th=[231736], 80.00th=[231736], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 1957, max= 4039, per=51.35%, avg=3319.00, stdev=1180.17, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1939KiB/s (1986kB/s)(6144KiB/3168msec); 0 zone resets clat (msec): min=145, max=747, avg=381.73, stdev=227.68 lat (msec): min=145, max=748, avg=381.79, stdev=227.68 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1957, max= 3792, per=26.05%, avg=2357.40, stdev=802.61, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 2=8.33%, 50=8.33%, 250=33.33%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=15.47%, ctx=148, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179842: Thu Sep 17 17:27:45 2026 read: IOPS=1, BW=2021KiB/s (2070kB/s)(5120KiB/2533msec) clat (usec): min=427, max=183424, avg=65076.93, stdev=83556.26 lat (usec): min=428, max=183425, avg=65078.03, stdev=83556.21 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[ 429], | 30.00th=[ 519], 40.00th=[ 519], 50.00th=[ 17957], 60.00th=[ 17957], | 70.00th=[123208], 80.00th=[123208], 90.00th=[183501], 95.00th=[183501], | 99.00th=[183501], 99.50th=[183501], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2830KiB/s (2898kB/s)(7168KiB/2533msec); 0 zone resets clat (msec): min=132, max=934, avg=313.23, stdev=293.73 lat (msec): min=132, max=934, avg=313.31, stdev=293.73 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 165], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 447], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1954, max= 5941, per=36.52%, avg=3304.67, stdev=2283.36, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 20=8.33%, 250=58.33%, 500=8.33%, 1000=8.33% cpu : usr=0.08%, sys=17.46%, ctx=129, 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=6465KiB/s (6620kB/s), 729KiB/s-2287KiB/s (747kB/s-2342kB/s), io=20.0MiB (20.0MB), run=2533-3168msec WRITE: bw=9051KiB/s (9268kB/s), 1634KiB/s-3645KiB/s (1673kB/s-3733kB/s), io=28.0MiB (29.4MB), run=2533-3168msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179844: Thu Sep 17 17:27:46 2026 read: IOPS=1, BW=1900KiB/s (1945kB/s)(7168KiB/3773msec) clat (msec): min=75, max=1003, avg=306.08, stdev=338.31 lat (msec): min=75, max=1003, avg=306.09, stdev=338.31 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 88], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 113], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 418], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1370, max= 4087, per=56.54%, avg=2876.75, stdev=1383.13, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1357KiB/s (1390kB/s)(5120KiB/3773msec); 0 zone resets clat (msec): min=112, max=655, avg=316.07, stdev=219.18 lat (msec): min=112, max=655, avg=316.15, stdev=219.18 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 2039, max= 4071, per=47.61%, avg=3391.00, stdev=1170.87, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=8.14%, ctx=118, 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=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=179845: Thu Sep 17 17:27:46 2026 read: IOPS=0, BW=539KiB/s (552kB/s)(2048KiB/3802msec) clat (msec): min=117, max=574, avg=345.61, stdev=323.10 lat (msec): min=117, max=574, avg=345.61, stdev=323.10 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 117], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1374, max= 2031, per=33.46%, avg=1702.50, stdev=464.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2693KiB/s (2758kB/s)(10.0MiB/3802msec); 0 zone resets clat (msec): min=94, max=1013, avg=269.14, stdev=275.09 lat (msec): min=94, max=1013, avg=269.24, stdev=275.09 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 106], | 30.00th=[ 112], 40.00th=[ 116], 50.00th=[ 142], 60.00th=[ 234], | 70.00th=[ 264], 80.00th=[ 284], 90.00th=[ 330], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 2031, max= 6107, per=51.31%, avg=3655.00, stdev=1699.82, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.05%, sys=6.13%, 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=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=179846: Thu Sep 17 17:27:46 2026 read: IOPS=1, BW=1721KiB/s (1763kB/s)(6144KiB/3569msec) clat (msec): min=70, max=582, avg=204.70, stdev=193.16 lat (msec): min=70, max=582, avg=204.70, stdev=193.16 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 87], | 30.00th=[ 87], 40.00th=[ 105], 50.00th=[ 105], 60.00th=[ 167], | 70.00th=[ 218], 80.00th=[ 218], 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= 2007, max= 4079, per=53.18%, avg=2705.67, stdev=1189.40, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1721KiB/s (1763kB/s)(6144KiB/3569msec); 0 zone resets clat (msec): min=73, max=912, avg=323.71, stdev=325.92 lat (msec): min=73, max=914, avg=324.16, stdev=326.70 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 112], | 30.00th=[ 112], 40.00th=[ 171], 50.00th=[ 171], 60.00th=[ 176], | 70.00th=[ 502], 80.00th=[ 502], 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= 2007, max= 2840, per=32.24%, avg=2296.67, stdev=470.88, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 100=25.00%, 250=50.00%, 500=8.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=5.72%, ctx=88, 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=179847: Thu Sep 17 17:27:46 2026 read: IOPS=1, BW=1272KiB/s (1303kB/s)(5120KiB/4025msec) clat (msec): min=72, max=460, avg=251.33, stdev=178.27 lat (msec): min=72, max=460, avg=251.33, stdev=178.27 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 110], 40.00th=[ 110], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 2031, max= 6107, per=79.97%, avg=4069.00, stdev=2882.17, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1781KiB/s (1824kB/s)(7168KiB/4025msec); 0 zone resets clat (msec): min=74, max=872, avg=353.42, stdev=279.02 lat (msec): min=75, max=872, avg=354.11, stdev=278.87 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 125], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 342], 60.00th=[ 456], | 70.00th=[ 456], 80.00th=[ 464], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1410, max= 2043, per=26.32%, avg=1874.75, stdev=310.25, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=41.67%, 1000=8.33% cpu : usr=0.00%, sys=4.22%, ctx=96, 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=5088KiB/s (5210kB/s), 539KiB/s-1900KiB/s (552kB/s-1945kB/s), io=20.0MiB (20.0MB), run=3569-4025msec WRITE: bw=7123KiB/s (7294kB/s), 1357KiB/s-2693KiB/s (1390kB/s-2758kB/s), io=28.0MiB (29.4MB), run=3569-4025msec 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=179853: Thu Sep 17 17:27:57 2026 read: IOPS=1, BW=4726KiB/s (4840kB/s)(12.0MiB/2600msec) clat (msec): min=670, max=1042, avg=832.42, stdev=190.58 lat (msec): min=670, max=1042, avg=832.42, stdev=190.58 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 8015, max= 8126, per=100.00%, avg=8070.50, stdev=78.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.00%, ctx=45, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179854: Thu Sep 17 17:27:57 2026 read: IOPS=0, BW=2641KiB/s (2704kB/s)(4096KiB/1551msec) clat (nsec): min=205235k, max=205235k, avg=205235196.00, stdev= 0.00 lat (nsec): min=205237k, max=205237k, avg=205237269.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 205], | 70.00th=[ 205], 80.00th=[ 205], 90.00th=[ 205], 95.00th=[ 205], | 99.00th=[ 205], 99.50th=[ 205], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] 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=1, BW=5282KiB/s (5409kB/s)(8192KiB/1551msec); 0 zone resets clat (msec): min=454, max=814, avg=634.60, stdev=254.16 lat (msec): min=455, max=814, avg=635.05, stdev=254.33 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 8159, max= 8159, per=64.79%, 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%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=8.71%, 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=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=179855: Thu Sep 17 17:27:57 2026 write: IOPS=1, BW=6610KiB/s (6769kB/s)(12.0MiB/1859msec); 0 zone resets clat (msec): min=360, max=975, avg=587.04, stdev=337.59 lat (msec): min=360, max=975, avg=587.53, stdev=337.95 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min=16318, max=16318, per=100.00%, avg=16318.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=6.84%, ctx=45, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179856: Thu Sep 17 17:27:57 2026 write: IOPS=1, BW=4723KiB/s (4836kB/s)(12.0MiB/2602msec); 0 zone resets clat (msec): min=237, max=1972, avg=818.16, stdev=999.47 lat (msec): min=237, max=1972, avg=818.62, stdev=999.36 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 1972], 80.00th=[ 1972], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min=12545, max=12545, per=99.62%, avg=12545.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.42%, ctx=53, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6302KiB/s (6453kB/s), 2641KiB/s-4726KiB/s (2704kB/s-4840kB/s), io=16.0MiB (16.8MB), run=1551-2600msec WRITE: bw=12.3MiB/s (12.9MB/s), 4723KiB/s-6610KiB/s (4836kB/s-6769kB/s), io=32.0MiB (33.6MB), run=1551-2602msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179858: Thu Sep 17 17:27:58 2026 read: IOPS=1, BW=5440KiB/s (5570kB/s)(12.0MiB/2259msec) clat (msec): min=586, max=858, avg=700.41, stdev=141.51 lat (msec): min=586, max=858, avg=700.41, stdev=141.51 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7937, max= 8159, per=100.00%, avg=8048.00, stdev=156.98, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=15.81%, ctx=511, 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=179859: Thu Sep 17 17:27:58 2026 read: IOPS=0, BW=1306KiB/s (1337kB/s)(4096KiB/3136msec) clat (nsec): min=711137k, max=711137k, avg=711136878.00, stdev= 0.00 lat (nsec): min=711139k, max=711139k, avg=711139027.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7937, max= 7937, per=100.00%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2612KiB/s (2675kB/s)(8192KiB/3136msec); 0 zone resets clat (msec): min=344, max=1992, avg=1168.11, stdev=1165.18 lat (msec): min=345, max=1992, avg=1168.75, stdev=1164.71 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 1989], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 8192, max= 8192, per=78.41%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.90%, ctx=141, 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=179860: Thu Sep 17 17:27:58 2026 write: IOPS=0, BW=3927KiB/s (4021kB/s)(12.0MiB/3129msec); 0 zone resets clat (msec): min=253, max=1449, avg=1013.32, stdev=660.36 lat (msec): min=253, max=1449, avg=1013.69, stdev=660.40 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8159, max= 8192, per=78.25%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.42%, ctx=51, 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=179861: Thu Sep 17 17:27:58 2026 write: IOPS=1, BW=4318KiB/s (4421kB/s)(12.0MiB/2846msec); 0 zone resets clat (msec): min=415, max=1335, avg=938.43, stdev=472.59 lat (msec): min=416, max=1335, avg=939.15, stdev=472.33 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7937, max= 8175, per=77.11%, avg=8056.00, stdev=168.29, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.90%, ctx=61, 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=5224KiB/s (5350kB/s), 1306KiB/s-5440KiB/s (1337kB/s-5570kB/s), io=16.0MiB (16.8MB), run=2259-3136msec WRITE: bw=10.2MiB/s (10.7MB/s), 2612KiB/s-4318KiB/s (2675kB/s-4421kB/s), io=32.0MiB (33.6MB), run=2846-3136msec