== sanity test 398b: DIO and buffer IO race ============== 11:44:25 (1786981465) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.00156 s, 7.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179902: Mon Aug 17 11:46:50 2026 read: IOPS=12, BW=48.7KiB/s (49.9kB/s)(5992KiB/123030msec) clat (usec): min=36, max=278510, avg=45106.79, stdev=29408.65 lat (usec): min=36, max=278512, avg=45110.13, stdev=29409.20 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 6128], 10.00th=[ 16188], 20.00th=[ 22414], | 30.00th=[ 28443], 40.00th=[ 34341], 50.00th=[ 39584], 60.00th=[ 46400], | 70.00th=[ 54264], 80.00th=[ 64226], 90.00th=[ 80217], 95.00th=[ 91751], | 99.00th=[154141], 99.50th=[183501], 99.90th=[229639], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 126, per=25.23%, avg=48.44, stdev=19.83, samples=240 iops : min= 1, max= 31, avg=11.45, stdev= 4.99, samples=240 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(6296KiB/123030msec); 0 zone resets clat (usec): min=838, max=786978, avg=34935.11, stdev=40908.26 lat (usec): min=839, max=786980, avg=34938.24, stdev=40907.34 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1336], 10.00th=[ 1549], 20.00th=[ 3621], | 30.00th=[ 7373], 40.00th=[ 15008], 50.00th=[ 24511], 60.00th=[ 34341], | 70.00th=[ 44303], 80.00th=[ 59507], 90.00th=[ 84411], 95.00th=[107480], | 99.00th=[166724], 99.50th=[181404], 99.90th=[283116], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 150, per=25.59%, avg=51.43, stdev=22.64, samples=238 iops : min= 1, max= 37, avg=12.21, stdev= 5.71, samples=238 lat (usec) : 50=0.36%, 100=1.76%, 250=0.16%, 500=0.10%, 1000=0.36% lat (msec) : 2=6.41%, 4=4.36%, 10=7.10%, 20=9.86%, 50=39.49% lat (msec) : 100=25.00%, 250=4.95%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.25%, ctx=6356, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179903: Mon Aug 17 11:46:50 2026 read: IOPS=12, BW=48.2KiB/s (49.3kB/s)(5940KiB/123321msec) clat (usec): min=32, max=214721, avg=46146.13, stdev=30407.87 lat (usec): min=32, max=214723, avg=46147.96, stdev=30407.98 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 13304], 10.00th=[ 17695], 20.00th=[ 23462], | 30.00th=[ 28443], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 64226], 90.00th=[ 83362], 95.00th=[102237], | 99.00th=[160433], 99.50th=[175113], 99.90th=[208667], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 7, max= 101, per=24.85%, avg=47.71, stdev=18.98, samples=242 iops : min= 1, max= 25, avg=11.27, stdev= 4.80, samples=242 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(6348KiB/123321msec); 0 zone resets clat (usec): min=783, max=810837, avg=34151.62, stdev=40880.89 lat (usec): min=784, max=810839, avg=34153.83, stdev=40880.44 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1336], 10.00th=[ 1696], 20.00th=[ 4047], | 30.00th=[ 8225], 40.00th=[ 15795], 50.00th=[ 23200], 60.00th=[ 30540], | 70.00th=[ 41157], 80.00th=[ 55837], 90.00th=[ 82314], 95.00th=[107480], | 99.00th=[166724], 99.50th=[187696], 99.90th=[214959], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 7, max= 127, per=25.42%, avg=51.10, stdev=23.89, samples=241 iops : min= 1, max= 31, avg=12.12, stdev= 6.00, samples=241 lat (usec) : 50=0.23%, 100=1.43%, 250=0.07%, 1000=0.29% lat (msec) : 2=5.76%, 4=4.33%, 10=7.13%, 20=11.13%, 50=40.46% lat (msec) : 100=23.18%, 250=5.96%, 1000=0.03% cpu : usr=0.08%, sys=5.31%, ctx=6377, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179904: Mon Aug 17 11:46:50 2026 read: IOPS=12, BW=49.1KiB/s (50.3kB/s)(6028KiB/122696msec) clat (usec): min=35, max=248181, avg=44455.85, stdev=30667.10 lat (usec): min=35, max=248182, avg=44458.70, stdev=30668.01 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 832], 10.00th=[ 15139], 20.00th=[ 22152], | 30.00th=[ 27919], 40.00th=[ 32637], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 51643], 80.00th=[ 62129], 90.00th=[ 81265], 95.00th=[100140], | 99.00th=[160433], 99.50th=[173016], 99.90th=[223347], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 15, max= 103, per=25.65%, avg=49.24, stdev=20.04, samples=239 iops : min= 3, max= 25, avg=11.65, stdev= 5.05, samples=239 write: IOPS=12, BW=51.0KiB/s (52.2kB/s)(6260KiB/122696msec); 0 zone resets clat (usec): min=943, max=930382, avg=35251.33, stdev=42280.04 lat (usec): min=945, max=930383, avg=35253.01, stdev=42280.00 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1369], 10.00th=[ 1631], 20.00th=[ 4359], | 30.00th=[ 8029], 40.00th=[ 15926], 50.00th=[ 24773], 60.00th=[ 33817], | 70.00th=[ 44303], 80.00th=[ 58983], 90.00th=[ 82314], 95.00th=[103285], | 99.00th=[164627], 99.50th=[181404], 99.90th=[256902], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 6, max= 119, per=25.34%, avg=50.93, stdev=22.03, samples=240 iops : min= 1, max= 29, avg=12.08, stdev= 5.54, samples=240 lat (usec) : 50=0.33%, 100=1.92%, 250=0.16%, 500=0.03%, 1000=0.20% lat (msec) : 2=5.89%, 4=3.58%, 10=7.78%, 20=10.84%, 50=40.79% lat (msec) : 100=23.21%, 250=5.21%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.30%, ctx=6454, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179907: Mon Aug 17 11:46:50 2026 read: IOPS=12, BW=48.6KiB/s (49.7kB/s)(6052KiB/124644msec) clat (usec): min=37, max=265180, avg=45578.86, stdev=31489.27 lat (usec): min=38, max=265181, avg=45580.64, stdev=31488.93 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11994], 10.00th=[ 16909], 20.00th=[ 22152], | 30.00th=[ 27919], 40.00th=[ 32900], 50.00th=[ 38536], 60.00th=[ 44303], | 70.00th=[ 51643], 80.00th=[ 64226], 90.00th=[ 83362], 95.00th=[109577], | 99.00th=[164627], 99.50th=[181404], 99.90th=[233833], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 7, max= 102, per=25.19%, avg=48.36, stdev=19.57, samples=243 iops : min= 1, max= 25, avg=11.44, stdev= 4.93, samples=243 write: IOPS=12, BW=50.0KiB/s (51.2kB/s)(6236KiB/124644msec); 0 zone resets clat (usec): min=951, max=848144, avg=35381.72, stdev=41363.02 lat (usec): min=952, max=848146, avg=35384.79, stdev=41362.41 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1336], 10.00th=[ 1582], 20.00th=[ 4424], | 30.00th=[ 8160], 40.00th=[ 16909], 50.00th=[ 25035], 60.00th=[ 32637], | 70.00th=[ 44827], 80.00th=[ 60556], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[156238], 99.50th=[185598], 99.90th=[242222], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 7, max= 151, per=24.67%, avg=49.58, stdev=23.35, samples=244 iops : min= 1, max= 37, avg=11.74, stdev= 5.87, samples=244 lat (usec) : 50=0.20%, 100=1.43%, 250=0.29%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.92%, 4=3.58%, 10=7.16%, 20=10.38%, 50=41.11% lat (msec) : 100=23.57%, 250=5.99%, 500=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.22%, ctx=6515, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=193KiB/s (197kB/s), 48.2KiB/s-49.1KiB/s (49.3kB/s-50.3kB/s), io=23.4MiB (24.6MB), run=122696-124644msec WRITE: bw=202KiB/s (207kB/s), 50.0KiB/s-51.5KiB/s (51.2kB/s-52.7kB/s), io=24.6MiB (25.7MB), run=122696-124644msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179901: Mon Aug 17 11:47:26 2026 read: IOPS=9, BW=37.5KiB/s (38.4kB/s)(5992KiB/159590msec) clat (msec): min=5, max=926, avg=42.25, stdev=44.68 lat (msec): min=5, max=926, avg=42.25, stdev=44.68 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 62], 90.00th=[ 92], 95.00th=[ 126], | 99.00th=[ 178], 99.50th=[ 211], 99.90th=[ 309], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 134, per=25.69%, avg=38.28, stdev=26.18, samples=305 iops : min= 1, max= 33, avg= 8.89, stdev= 6.60, samples=305 write: IOPS=9, BW=39.5KiB/s (40.4kB/s)(6296KiB/159590msec); 0 zone resets clat (msec): min=9, max=360, avg=60.87, stdev=43.93 lat (msec): min=9, max=360, avg=60.87, stdev=43.93 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 121], 95.00th=[ 150], | 99.00th=[ 218], 99.50th=[ 236], 99.90th=[ 300], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 142, per=25.25%, avg=39.39, stdev=25.77, samples=311 iops : min= 1, max= 35, avg= 9.17, stdev= 6.48, samples=311 lat (msec) : 10=2.73%, 20=16.76%, 50=45.38%, 100=22.14%, 250=12.63% lat (msec) : 500=0.33%, 1000=0.03% cpu : usr=0.05%, sys=2.10%, ctx=4873, 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=179905: Mon Aug 17 11:47:26 2026 read: IOPS=9, BW=37.0KiB/s (37.9kB/s)(5940KiB/160415msec) clat (msec): min=5, max=861, avg=41.06, stdev=43.49 lat (msec): min=5, max=861, avg=41.07, stdev=43.49 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 59], 90.00th=[ 89], 95.00th=[ 125], | 99.00th=[ 186], 99.50th=[ 218], 99.90th=[ 262], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 136, per=25.39%, avg=37.83, stdev=26.98, samples=304 iops : min= 1, max= 34, avg= 8.78, stdev= 6.79, samples=304 write: IOPS=9, BW=39.6KiB/s (40.5kB/s)(6348KiB/160415msec); 0 zone resets clat (msec): min=10, max=404, avg=62.37, stdev=48.98 lat (msec): min=10, max=404, avg=62.38, stdev=48.98 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 56], | 70.00th=[ 71], 80.00th=[ 91], 90.00th=[ 126], 95.00th=[ 157], | 99.00th=[ 234], 99.50th=[ 313], 99.90th=[ 384], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7, max= 134, per=25.14%, avg=39.21, stdev=25.97, samples=313 iops : min= 1, max= 33, avg= 9.13, stdev= 6.53, samples=313 lat (msec) : 10=2.41%, 20=17.71%, 50=45.15%, 100=21.91%, 250=12.27% lat (msec) : 500=0.52%, 1000=0.03% cpu : usr=0.07%, sys=2.14%, ctx=4940, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179906: Mon Aug 17 11:47:26 2026 read: IOPS=9, BW=37.6KiB/s (38.5kB/s)(6028KiB/160135msec) clat (msec): min=5, max=292, avg=41.84, stdev=38.97 lat (msec): min=5, max=292, avg=41.84, stdev=38.97 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 89], 95.00th=[ 127], | 99.00th=[ 209], 99.50th=[ 222], 99.90th=[ 279], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 167, per=25.56%, avg=38.09, stdev=26.95, samples=308 iops : min= 1, max= 41, avg= 8.84, stdev= 6.78, samples=308 write: IOPS=9, BW=39.1KiB/s (40.0kB/s)(6260KiB/160135msec); 0 zone resets clat (msec): min=9, max=876, avg=61.74, stdev=50.37 lat (msec): min=9, max=876, avg=61.74, stdev=50.37 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 88], 90.00th=[ 124], 95.00th=[ 159], | 99.00th=[ 222], 99.50th=[ 262], 99.90th=[ 388], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 111, per=25.02%, avg=39.04, stdev=25.23, samples=312 iops : min= 1, max= 27, avg= 9.08, stdev= 6.35, samples=312 lat (msec) : 10=2.90%, 20=16.34%, 50=44.76%, 100=24.35%, 250=11.23% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.05%, sys=2.09%, ctx=4925, 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=179908: Mon Aug 17 11:47:26 2026 read: IOPS=9, BW=37.7KiB/s (38.6kB/s)(6052KiB/160660msec) clat (msec): min=5, max=296, avg=42.06, stdev=40.51 lat (msec): min=5, max=296, avg=42.07, stdev=40.51 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 63], 90.00th=[ 94], 95.00th=[ 134], | 99.00th=[ 199], 99.50th=[ 232], 99.90th=[ 259], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 151, per=25.86%, avg=38.52, stdev=28.15, samples=305 iops : min= 1, max= 37, avg= 8.95, stdev= 7.07, samples=305 write: IOPS=9, BW=38.8KiB/s (39.7kB/s)(6236KiB/160660msec); 0 zone resets clat (msec): min=9, max=878, avg=61.95, stdev=51.91 lat (msec): min=9, max=878, avg=61.95, stdev=51.91 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 70], 80.00th=[ 91], 90.00th=[ 123], 95.00th=[ 155], | 99.00th=[ 234], 99.50th=[ 309], 99.90th=[ 401], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 112, per=24.87%, avg=38.80, stdev=25.70, samples=312 iops : min= 1, max= 28, avg= 9.02, stdev= 6.46, samples=312 lat (msec) : 10=2.70%, 20=17.94%, 50=43.98%, 100=22.85%, 250=11.98% lat (msec) : 500=0.52%, 1000=0.03% cpu : usr=0.06%, sys=2.05%, ctx=4940, 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=149KiB/s (153kB/s), 37.0KiB/s-37.7KiB/s (37.9kB/s-38.6kB/s), io=23.4MiB (24.6MB), run=159590-160660msec WRITE: bw=156KiB/s (160kB/s), 38.8KiB/s-39.6KiB/s (39.7kB/s-40.5kB/s), io=24.6MiB (25.7MB), run=159590-160660msec 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=179946: Mon Aug 17 11:48:12 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5920KiB/34990msec) clat (usec): min=39, max=210234, avg=51540.28, stdev=34927.80 lat (usec): min=39, max=210235, avg=51542.93, stdev=34927.54 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 65], 10.00th=[ 351], 20.00th=[ 27919], | 30.00th=[ 32637], 40.00th=[ 39060], 50.00th=[ 45876], 60.00th=[ 54264], | 70.00th=[ 64226], 80.00th=[ 74974], 90.00th=[ 91751], 95.00th=[111674], | 99.00th=[179307], 99.50th=[206570], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 63, max= 347, per=24.70%, avg=166.24, stdev=60.28, samples=68 iops : min= 3, max= 21, avg= 9.59, stdev= 3.76, samples=68 write: IOPS=11, BW=182KiB/s (186kB/s)(6368KiB/34990msec); 0 zone resets clat (usec): min=1428, max=197305, avg=39326.85, stdev=38516.22 lat (usec): min=1430, max=197307, avg=39344.14, stdev=38502.98 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2180], 10.00th=[ 3130], 20.00th=[ 6915], | 30.00th=[ 12256], 40.00th=[ 19792], 50.00th=[ 26870], 60.00th=[ 34866], | 70.00th=[ 48497], 80.00th=[ 68682], 90.00th=[ 98042], 95.00th=[125305], | 99.00th=[158335], 99.50th=[166724], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 382, per=25.59%, avg=181.21, stdev=71.78, samples=68 iops : min= 1, max= 23, avg=10.53, stdev= 4.54, samples=68 lat (usec) : 50=0.78%, 100=3.65%, 250=0.26%, 500=0.13%, 750=0.13% lat (msec) : 2=2.21%, 4=4.82%, 10=6.77%, 20=8.72%, 50=35.42% lat (msec) : 100=28.26%, 250=8.85% cpu : usr=0.06%, sys=5.31%, ctx=1674, 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=179947: Mon Aug 17 11:48:12 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(5744KiB/35583msec) clat (usec): min=42, max=234102, avg=52686.46, stdev=33663.87 lat (usec): min=44, max=234104, avg=52708.40, stdev=33648.17 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 10814], 10.00th=[ 20055], 20.00th=[ 27395], | 30.00th=[ 34341], 40.00th=[ 40109], 50.00th=[ 43779], 60.00th=[ 53740], | 70.00th=[ 64226], 80.00th=[ 74974], 90.00th=[ 94897], 95.00th=[114820], | 99.00th=[175113], 99.50th=[219153], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 26, max= 287, per=23.97%, avg=161.29, stdev=64.18, samples=70 iops : min= 1, max= 17, avg= 9.29, stdev= 4.05, samples=70 write: IOPS=11, BW=184KiB/s (188kB/s)(6544KiB/35583msec); 0 zone resets clat (usec): min=1638, max=227110, avg=40276.84, stdev=40262.08 lat (usec): min=1641, max=227112, avg=40279.33, stdev=40261.95 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2180], 10.00th=[ 3490], 20.00th=[ 6587], | 30.00th=[ 10945], 40.00th=[ 18744], 50.00th=[ 27919], 60.00th=[ 38536], | 70.00th=[ 49546], 80.00th=[ 69731], 90.00th=[101188], 95.00th=[120062], | 99.00th=[175113], 99.50th=[191890], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 62, max= 416, per=25.87%, avg=183.17, stdev=77.70, samples=70 iops : min= 3, max= 26, avg=10.67, stdev= 4.90, samples=70 lat (usec) : 50=0.13%, 100=2.08% lat (msec) : 2=1.95%, 4=4.30%, 10=8.59%, 20=9.64%, 50=37.76% lat (msec) : 100=26.69%, 250=8.85% cpu : usr=0.06%, sys=5.24%, ctx=1629, 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=179948: Mon Aug 17 11:48:12 2026 read: IOPS=11, BW=177KiB/s (181kB/s)(6256KiB/35378msec) clat (usec): min=42, max=152786, avg=50462.90, stdev=28461.25 lat (usec): min=44, max=152787, avg=50464.42, stdev=28461.25 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 71], 10.00th=[ 18482], 20.00th=[ 27657], | 30.00th=[ 35390], 40.00th=[ 40109], 50.00th=[ 47449], 60.00th=[ 53740], | 70.00th=[ 63177], 80.00th=[ 73925], 90.00th=[ 88605], 95.00th=[101188], | 99.00th=[128451], 99.50th=[139461], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 31, max= 377, per=26.05%, avg=175.35, stdev=74.24, samples=69 iops : min= 1, max= 23, avg=10.16, stdev= 4.63, samples=69 write: IOPS=10, BW=171KiB/s (175kB/s)(6032KiB/35378msec); 0 zone resets clat (usec): min=1436, max=278042, avg=41052.62, stdev=39628.48 lat (usec): min=1438, max=278044, avg=41056.96, stdev=39627.63 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2114], 10.00th=[ 3294], 20.00th=[ 7308], | 30.00th=[ 12125], 40.00th=[ 22152], 50.00th=[ 30540], 60.00th=[ 38011], | 70.00th=[ 52691], 80.00th=[ 71828], 90.00th=[ 90702], 95.00th=[113771], | 99.00th=[187696], 99.50th=[214959], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 63, max= 379, per=23.52%, avg=166.51, stdev=64.71, samples=69 iops : min= 3, max= 23, avg= 9.61, stdev= 4.07, samples=69 lat (usec) : 50=0.13%, 100=2.99%, 250=0.13%, 500=0.13%, 750=0.13% lat (msec) : 2=1.56%, 4=4.95%, 10=6.64%, 20=8.20%, 50=36.33% lat (msec) : 100=31.90%, 250=6.77%, 500=0.13% cpu : usr=0.07%, sys=4.95%, ctx=1705, 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=179949: Mon Aug 17 11:48:12 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(6032KiB/34543msec) clat (usec): min=49, max=192738, avg=51285.07, stdev=32334.36 lat (usec): min=50, max=192739, avg=51286.81, stdev=32334.55 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 88], 20.00th=[ 30540], | 30.00th=[ 36439], 40.00th=[ 41157], 50.00th=[ 47973], 60.00th=[ 54789], | 70.00th=[ 63177], 80.00th=[ 71828], 90.00th=[ 90702], 95.00th=[109577], | 99.00th=[162530], 99.50th=[168821], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 32, max= 318, per=26.28%, avg=176.85, stdev=66.17, samples=67 iops : min= 2, max= 19, avg=10.27, stdev= 4.13, samples=67 write: IOPS=11, BW=181KiB/s (185kB/s)(6256KiB/34543msec); 0 zone resets clat (usec): min=959, max=169639, avg=38106.90, stdev=37012.48 lat (usec): min=961, max=169640, avg=38110.00, stdev=37012.43 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1991], 10.00th=[ 2311], 20.00th=[ 6128], | 30.00th=[ 11207], 40.00th=[ 17433], 50.00th=[ 25822], 60.00th=[ 36963], | 70.00th=[ 49021], 80.00th=[ 64750], 90.00th=[ 93848], 95.00th=[114820], | 99.00th=[154141], 99.50th=[160433], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 31, max= 381, per=25.57%, avg=181.04, stdev=72.97, samples=68 iops : min= 1, max= 23, avg=10.53, stdev= 4.63, samples=68 lat (usec) : 50=0.13%, 100=4.82%, 250=0.26%, 750=0.13%, 1000=0.13% lat (msec) : 2=2.60%, 4=4.95%, 10=6.64%, 20=8.85%, 50=33.20% lat (msec) : 100=30.21%, 250=8.07% cpu : usr=0.08%, sys=5.52%, ctx=1668, 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=673KiB/s (689kB/s), 161KiB/s-177KiB/s (165kB/s-181kB/s), io=23.4MiB (24.5MB), run=34543-35583msec WRITE: bw=708KiB/s (725kB/s), 171KiB/s-184KiB/s (175kB/s-188kB/s), io=24.6MiB (25.8MB), run=34543-35583msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179951: Mon Aug 17 11:48:29 2026 read: IOPS=7, BW=117KiB/s (120kB/s)(5920KiB/50539msec) clat (msec): min=6, max=274, avg=53.46, stdev=40.67 lat (msec): min=6, max=274, avg=53.46, stdev=40.67 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 50], | 70.00th=[ 58], 80.00th=[ 77], 90.00th=[ 107], 95.00th=[ 138], | 99.00th=[ 224], 99.50th=[ 236], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 318, per=25.25%, avg=116.67, stdev=64.23, samples=98 iops : min= 1, max= 19, avg= 6.48, stdev= 4.06, samples=98 write: IOPS=7, BW=126KiB/s (129kB/s)(6368KiB/50539msec); 0 zone resets clat (msec): min=15, max=278, avg=76.50, stdev=46.74 lat (msec): min=15, max=278, avg=76.50, stdev=46.74 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 40], | 30.00th=[ 46], 40.00th=[ 54], 50.00th=[ 63], 60.00th=[ 77], | 70.00th=[ 89], 80.00th=[ 109], 90.00th=[ 144], 95.00th=[ 176], | 99.00th=[ 226], 99.50th=[ 271], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 25, max= 414, per=25.74%, avg=125.09, stdev=68.19, samples=99 iops : min= 1, max= 25, avg= 7.02, stdev= 4.30, samples=99 lat (msec) : 10=0.52%, 20=5.34%, 50=42.06%, 100=33.46%, 250=18.23% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.91%, ctx=1254, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179952: Mon Aug 17 11:48:29 2026 read: IOPS=6, BW=112KiB/s (114kB/s)(5744KiB/51395msec) clat (msec): min=9, max=299, avg=55.95, stdev=46.09 lat (msec): min=9, max=299, avg=55.95, stdev=46.09 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 57], 80.00th=[ 78], 90.00th=[ 117], 95.00th=[ 161], | 99.00th=[ 230], 99.50th=[ 241], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 350, per=25.46%, avg=117.61, stdev=68.82, samples=95 iops : min= 1, max= 21, avg= 6.57, stdev= 4.33, samples=95 write: IOPS=7, BW=127KiB/s (130kB/s)(6544KiB/51395msec); 0 zone resets clat (msec): min=13, max=338, avg=76.35, stdev=48.50 lat (msec): min=13, max=338, avg=76.36, stdev=48.50 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 39], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 63], 60.00th=[ 73], | 70.00th=[ 89], 80.00th=[ 110], 90.00th=[ 140], 95.00th=[ 182], | 99.00th=[ 245], 99.50th=[ 266], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 319, per=26.36%, avg=128.13, stdev=69.69, samples=100 iops : min= 1, max= 19, avg= 7.22, stdev= 4.41, samples=100 lat (msec) : 10=0.13%, 20=7.16%, 50=40.36%, 100=33.72%, 250=17.97% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=1.98%, ctx=1289, 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=179953: Mon Aug 17 11:48:29 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(6256KiB/51116msec) clat (msec): min=9, max=238, avg=53.37, stdev=42.44 lat (msec): min=9, max=238, avg=53.38, stdev=42.44 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 47], | 70.00th=[ 57], 80.00th=[ 70], 90.00th=[ 114], 95.00th=[ 150], | 99.00th=[ 211], 99.50th=[ 215], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 351, per=26.48%, avg=122.36, stdev=81.39, samples=100 iops : min= 1, max= 21, avg= 6.86, stdev= 5.14, samples=100 write: IOPS=7, BW=118KiB/s (121kB/s)(6032KiB/51116msec); 0 zone resets clat (msec): min=18, max=334, avg=79.83, stdev=50.25 lat (msec): min=18, max=334, avg=79.83, stdev=50.25 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 28], 10.00th=[ 34], 20.00th=[ 41], | 30.00th=[ 48], 40.00th=[ 56], 50.00th=[ 65], 60.00th=[ 77], | 70.00th=[ 92], 80.00th=[ 115], 90.00th=[ 148], 95.00th=[ 188], | 99.00th=[ 243], 99.50th=[ 275], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 287, per=24.21%, avg=117.64, stdev=58.86, samples=99 iops : min= 1, max= 17, avg= 6.55, stdev= 3.71, samples=99 lat (msec) : 10=0.26%, 20=7.68%, 50=40.89%, 100=31.90%, 250=18.88% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.83%, ctx=1283, 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=179954: Mon Aug 17 11:48:29 2026 read: IOPS=7, BW=116KiB/s (119kB/s)(6032KiB/51821msec) clat (msec): min=8, max=394, avg=56.58, stdev=44.23 lat (msec): min=8, max=394, avg=56.58, stdev=44.24 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 20], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 50], | 70.00th=[ 63], 80.00th=[ 82], 90.00th=[ 115], 95.00th=[ 144], | 99.00th=[ 199], 99.50th=[ 239], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 30, max= 351, per=26.37%, avg=121.82, stdev=68.32, samples=96 iops : min= 1, max= 21, avg= 6.80, stdev= 4.31, samples=96 write: IOPS=7, BW=121KiB/s (124kB/s)(6256KiB/51821msec); 0 zone resets clat (msec): min=14, max=334, avg=77.24, stdev=51.81 lat (msec): min=14, max=334, avg=77.25, stdev=51.81 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 37], | 30.00th=[ 47], 40.00th=[ 53], 50.00th=[ 61], 60.00th=[ 71], | 70.00th=[ 92], 80.00th=[ 110], 90.00th=[ 161], 95.00th=[ 182], | 99.00th=[ 271], 99.50th=[ 279], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 415, per=25.23%, avg=122.62, stdev=75.39, samples=100 iops : min= 1, max= 25, avg= 6.86, stdev= 4.74, samples=100 lat (msec) : 10=0.65%, 20=6.51%, 50=40.76%, 100=32.29%, 250=19.14% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=1.85%, ctx=1349, 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=462KiB/s (473kB/s), 112KiB/s-122KiB/s (114kB/s-125kB/s), io=23.4MiB (24.5MB), run=50539-51821msec WRITE: bw=486KiB/s (498kB/s), 118KiB/s-127KiB/s (121kB/s-130kB/s), io=24.6MiB (25.8MB), run=50539-51821msec 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=179974: Mon Aug 17 11:48:46 2026 read: IOPS=2, BW=2278KiB/s (2332kB/s)(7168KiB/3147msec) clat (usec): min=557, max=330442, avg=205463.97, stdev=100098.32 lat (usec): min=559, max=330444, avg=205465.61, stdev=100098.30 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[202376], | 30.00th=[208667], 40.00th=[208667], 50.00th=[223347], 60.00th=[227541], | 70.00th=[227541], 80.00th=[246416], 90.00th=[329253], 95.00th=[329253], | 99.00th=[329253], 99.50th=[329253], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 2031, max= 3961, per=64.84%, avg=2934.50, stdev=1041.69, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1627KiB/s (1666kB/s)(5120KiB/3147msec); 0 zone resets clat (msec): min=215, max=539, avg=341.47, stdev=128.07 lat (msec): min=215, max=539, avg=341.57, stdev=128.09 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2023, max= 2043, per=32.03%, avg=2030.00, stdev= 9.45, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=15.86%, ctx=225, 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=179975: Mon Aug 17 11:48:46 2026 read: IOPS=0, BW=453KiB/s (464kB/s)(2048KiB/4524msec) clat (msec): min=102, max=711, avg=406.79, stdev=430.80 lat (msec): min=102, max=711, avg=406.79, stdev=430.80 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 103], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 103], 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= 2023, max= 2031, per=44.79%, avg=2027.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2263KiB/s (2318kB/s)(10.0MiB/4524msec); 0 zone resets clat (msec): min=90, max=1009, avg=369.38, stdev=254.99 lat (msec): min=90, max=1009, avg=370.49, stdev=254.26 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 188], | 30.00th=[ 197], 40.00th=[ 249], 50.00th=[ 338], 60.00th=[ 347], | 70.00th=[ 355], 80.00th=[ 435], 90.00th=[ 489], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1809, max= 4047, per=36.50%, avg=2313.00, stdev=853.34, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=13.95%, ctx=128, 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=179976: Mon Aug 17 11:48:46 2026 read: IOPS=1, BW=1492KiB/s (1528kB/s)(6144KiB/4117msec) clat (usec): min=522, max=300554, avg=142128.83, stdev=154593.98 lat (usec): min=523, max=300554, avg=142130.16, stdev=154593.88 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 553], | 30.00th=[ 553], 40.00th=[ 2835], 50.00th=[ 2835], 60.00th=[270533], | 70.00th=[278922], 80.00th=[278922], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 1809, max= 2043, per=43.65%, avg=1975.60, stdev=95.93, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1492KiB/s (1528kB/s)(6144KiB/4117msec); 0 zone resets clat (msec): min=218, max=815, avg=543.71, stdev=232.73 lat (msec): min=218, max=815, avg=543.80, stdev=232.75 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 651], | 70.00th=[ 667], 80.00th=[ 667], 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= 1762, max= 2031, per=30.31%, avg=1921.00, stdev=126.30, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 250=8.33%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.05%, sys=10.88%, ctx=179, 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=179977: Mon Aug 17 11:48:46 2026 read: IOPS=1, BW=1232KiB/s (1262kB/s)(5120KiB/4156msec) clat (usec): min=606, max=446018, avg=249230.67, stdev=170832.92 lat (usec): min=608, max=446019, avg=249232.05, stdev=170832.65 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[ 611], | 30.00th=[164627], 40.00th=[164627], 50.00th=[316670], 60.00th=[316670], | 70.00th=[316670], 80.00th=[316670], 90.00th=[446694], 95.00th=[446694], | 99.00th=[446694], 99.50th=[446694], 99.90th=[446694], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 1809, max= 4087, per=58.17%, avg=2633.00, stdev=1262.93, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1725KiB/s (1766kB/s)(7168KiB/4156msec); 0 zone resets clat (msec): min=212, max=681, avg=415.30, stdev=177.30 lat (msec): min=212, max=681, avg=415.50, stdev=177.41 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 239], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 380], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1372, max= 2011, per=29.62%, avg=1877.00, stdev=282.39, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=41.67%, 750=25.00% cpu : usr=0.00%, sys=13.00%, ctx=213, 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=4527KiB/s (4636kB/s), 453KiB/s-2278KiB/s (464kB/s-2332kB/s), io=20.0MiB (20.0MB), run=3147-4524msec WRITE: bw=6338KiB/s (6490kB/s), 1492KiB/s-2263KiB/s (1528kB/s-2318kB/s), io=28.0MiB (29.4MB), run=3147-4524msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179969: Mon Aug 17 11:48:46 2026 read: IOPS=1, BW=1587KiB/s (1625kB/s)(7168KiB/4518msec) clat (msec): min=72, max=830, avg=278.92, stdev=266.27 lat (msec): min=72, max=830, avg=278.93, stdev=266.27 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 113], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 144], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 380], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1732, max= 3716, per=56.55%, avg=2300.40, stdev=801.27, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1133KiB/s (1160kB/s)(5120KiB/4518msec); 0 zone resets clat (msec): min=136, max=1014, avg=489.99, stdev=327.77 lat (msec): min=136, max=1014, avg=490.09, stdev=327.77 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1818, max= 4055, per=45.96%, avg=2617.67, stdev=1247.40, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=4.85%, 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=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=179970: Mon Aug 17 11:48:46 2026 read: IOPS=0, BW=407KiB/s (417kB/s)(2048KiB/5034msec) clat (msec): min=97, max=804, avg=451.11, stdev=500.45 lat (msec): min=97, max=804, avg=451.11, stdev=500.45 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 97], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 97], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1802, max= 2043, per=47.26%, avg=1922.50, stdev=170.41, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2034KiB/s (2083kB/s)(10.0MiB/5034msec); 0 zone resets clat (msec): min=171, max=1101, avg=395.46, stdev=285.30 lat (msec): min=171, max=1101, avg=396.09, stdev=285.41 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 201], 40.00th=[ 259], 50.00th=[ 284], 60.00th=[ 338], | 70.00th=[ 359], 80.00th=[ 439], 90.00th=[ 634], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1802, max= 3968, per=50.80%, avg=2893.33, stdev=1057.52, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=3.54%, ctx=105, 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=179971: Mon Aug 17 11:48:46 2026 read: IOPS=1, BW=1524KiB/s (1561kB/s)(6144KiB/4031msec) clat (msec): min=103, max=803, avg=359.48, stdev=272.26 lat (msec): min=103, max=803, avg=359.48, stdev=272.26 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 129], | 30.00th=[ 129], 40.00th=[ 197], 50.00th=[ 197], 60.00th=[ 405], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1980, max= 3968, per=77.13%, avg=3137.67, stdev=1033.63, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1524KiB/s (1561kB/s)(6144KiB/4031msec); 0 zone resets clat (msec): min=92, max=491, avg=295.61, stdev=206.50 lat (msec): min=92, max=491, avg=295.95, stdev=206.24 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 101], | 30.00th=[ 101], 40.00th=[ 130], 50.00th=[ 130], 60.00th=[ 472], | 70.00th=[ 489], 80.00th=[ 489], 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= 1818, max= 5626, per=55.53%, avg=3162.33, stdev=2136.56, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=3.57%, ctx=70, 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=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=179972: Mon Aug 17 11:48:46 2026 read: IOPS=1, BW=1165KiB/s (1193kB/s)(5120KiB/4394msec) clat (msec): min=110, max=743, avg=377.90, stdev=235.24 lat (msec): min=110, max=743, avg=377.90, stdev=235.24 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 111], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 430], 80.00th=[ 430], 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= 1732, max= 3637, per=60.73%, avg=2470.67, stdev=1021.97, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1631KiB/s (1670kB/s)(7168KiB/4394msec); 0 zone resets clat (msec): min=105, max=947, avg=353.46, stdev=320.55 lat (msec): min=106, max=947, avg=353.76, stdev=320.47 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 211], 60.00th=[ 255], | 70.00th=[ 255], 80.00th=[ 651], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1980, max= 5535, per=50.60%, avg=2881.50, stdev=1769.13, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.05%, sys=3.73%, ctx=80, 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=4068KiB/s (4166kB/s), 407KiB/s-1587KiB/s (417kB/s-1625kB/s), io=20.0MiB (20.0MB), run=4031-5034msec WRITE: bw=5696KiB/s (5832kB/s), 1133KiB/s-2034KiB/s (1160kB/s-2083kB/s), io=28.0MiB (29.4MB), run=4031-5034msec 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=179985: Mon Aug 17 11:49:01 2026 read: IOPS=1, BW=4880KiB/s (4997kB/s)(12.0MiB/2518msec) clat (msec): min=605, max=890, avg=794.18, stdev=163.58 lat (msec): min=605, max=890, avg=794.18, stdev=163.58 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 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= 7907, max= 8159, per=100.00%, avg=8033.00, stdev=178.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=3.69%, ctx=55, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179986: Mon Aug 17 11:49:01 2026 read: IOPS=0, BW=1911KiB/s (1957kB/s)(4096KiB/2143msec) clat (nsec): min=359843k, max=359843k, avg=359843392.00, stdev= 0.00 lat (nsec): min=359846k, max=359846k, avg=359845522.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 6113, max= 6113, per=93.96%, avg=6113.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3823KiB/s (3914kB/s)(8192KiB/2143msec); 0 zone resets clat (msec): min=589, max=985, avg=787.48, stdev=279.38 lat (msec): min=590, max=985, avg=787.91, stdev=279.41 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 986], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7907, max= 7907, per=70.59%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=6.96%, ctx=63, 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=179987: Mon Aug 17 11:49:01 2026 write: IOPS=1, BW=4201KiB/s (4302kB/s)(12.0MiB/2925msec); 0 zone resets clat (msec): min=232, max=1331, avg=924.15, stdev=602.29 lat (msec): min=232, max=1335, avg=925.61, stdev=603.34 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 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= 8031, max= 8031, per=71.69%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.86%, ctx=49, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179990: Mon Aug 17 11:49:01 2026 write: IOPS=1, BW=4941KiB/s (5059kB/s)(12.0MiB/2487msec); 0 zone resets clat (msec): min=315, max=1444, avg=785.30, stdev=588.04 lat (msec): min=315, max=1444, avg=786.45, stdev=587.62 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 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=15814, max=15814, per=100.00%, avg=15814.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.42%, ctx=46, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6507KiB/s (6663kB/s), 1911KiB/s-4880KiB/s (1957kB/s-4997kB/s), io=16.0MiB (16.8MB), run=2143-2518msec WRITE: bw=10.9MiB/s (11.5MB/s), 3823KiB/s-4941KiB/s (3914kB/s-5059kB/s), io=32.0MiB (33.6MB), run=2143-2925msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179988: Mon Aug 17 11:49:01 2026 read: IOPS=1, BW=5919KiB/s (6061kB/s)(12.0MiB/2076msec) clat (msec): min=633, max=680, avg=657.55, stdev=23.51 lat (msec): min=633, max=680, avg=657.55, stdev=23.52 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 8062, max= 8192, per=100.00%, avg=8127.00, stdev=91.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=12.63%, ctx=386, 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=179989: Mon Aug 17 11:49:01 2026 read: IOPS=0, BW=1693KiB/s (1734kB/s)(4096KiB/2419msec) clat (nsec): min=705128k, max=705128k, avg=705128488.00, stdev= 0.00 lat (nsec): min=705131k, max=705131k, avg=705131237.00, 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= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3387KiB/s (3468kB/s)(8192KiB/2419msec); 0 zone resets clat (msec): min=534, max=1038, avg=786.69, stdev=356.61 lat (msec): min=534, max=1039, avg=787.14, stdev=356.62 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 1036], | 70.00th=[ 1036], 80.00th=[ 1036], 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= 8110, max= 8110, per=73.29%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.17%, ctx=103, 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=179991: Mon Aug 17 11:49:01 2026 write: IOPS=1, BW=4150KiB/s (4250kB/s)(12.0MiB/2961msec); 0 zone resets clat (msec): min=177, max=1666, avg=970.50, stdev=749.10 lat (msec): min=178, max=1666, avg=971.02, stdev=749.08 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8192, max= 8192, per=74.03%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.13%, ctx=47, 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=179992: Mon Aug 17 11:49:01 2026 write: IOPS=1, BW=5804KiB/s (5944kB/s)(12.0MiB/2117msec); 0 zone resets clat (msec): min=181, max=1538, avg=679.85, stdev=746.44 lat (msec): min=182, max=1538, avg=680.30, stdev=746.48 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7557, max= 8126, per=70.86%, avg=7841.50, stdev=402.34, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=4.96%, ctx=46, 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=6773KiB/s (6936kB/s), 1693KiB/s-5919KiB/s (1734kB/s-6061kB/s), io=16.0MiB (16.8MB), run=2076-2419msec WRITE: bw=10.8MiB/s (11.3MB/s), 3387KiB/s-5804KiB/s (3468kB/s-5944kB/s), io=32.0MiB (33.6MB), run=2117-2961msec