== sanity test 398b: DIO and buffer IO race ============== 00:48:50 (1781239730) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.20848 s, 9.7 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=145704: Fri Jun 12 00:51:25 2026 read: IOPS=11, BW=44.1KiB/s (45.1kB/s)(5992KiB/135978msec) clat (usec): min=32, max=1107.9k, avg=45322.81, stdev=42666.04 lat (usec): min=33, max=1107.9k, avg=45329.35, stdev=42666.25 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 64], 10.00th=[ 392], | 20.00th=[ 21627], 30.00th=[ 27395], 40.00th=[ 32637], | 50.00th=[ 38536], 60.00th=[ 46400], 70.00th=[ 54789], | 80.00th=[ 67634], 90.00th=[ 83362], 95.00th=[ 102237], | 99.00th=[ 137364], 99.50th=[ 206570], 99.90th=[ 413139], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 6, max= 111, per=25.10%, avg=43.67, stdev=18.54, samples=267 iops : min= 1, max= 27, avg=10.27, stdev= 4.68, samples=267 write: IOPS=11, BW=46.3KiB/s (47.4kB/s)(6296KiB/135978msec); 0 zone resets clat (usec): min=1072, max=486144, avg=42916.98, stdev=44167.93 lat (usec): min=1074, max=486145, avg=42922.22, stdev=44169.45 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1516], 10.00th=[ 2638], 20.00th=[ 6063], | 30.00th=[ 10683], 40.00th=[ 21890], 50.00th=[ 32113], 60.00th=[ 43254], | 70.00th=[ 56361], 80.00th=[ 72877], 90.00th=[ 96994], 95.00th=[121111], | 99.00th=[181404], 99.50th=[227541], 99.90th=[396362], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 7, max= 103, per=25.61%, avg=46.60, stdev=17.84, samples=263 iops : min= 1, max= 25, avg=11.00, stdev= 4.49, samples=263 lat (usec) : 50=0.20%, 100=3.91%, 250=0.65%, 500=0.16%, 750=0.03% lat (msec) : 2=4.46%, 4=3.09%, 10=7.19%, 20=8.53%, 50=37.01% lat (msec) : 100=27.67%, 250=6.80%, 500=0.26%, 2000=0.03% cpu : usr=0.08%, sys=5.65%, ctx=6858, 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=145706: Fri Jun 12 00:51:25 2026 read: IOPS=10, BW=43.2KiB/s (44.2kB/s)(5940KiB/137473msec) clat (usec): min=26, max=543844, avg=45790.64, stdev=34316.12 lat (usec): min=26, max=543846, avg=45796.42, stdev=34315.91 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 70], 10.00th=[ 13698], 20.00th=[ 22414], | 30.00th=[ 28181], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 45876], | 70.00th=[ 55837], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[ 99091], | 99.00th=[156238], 99.50th=[198181], 99.90th=[316670], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 6, max= 103, per=24.82%, avg=43.18, stdev=18.73, samples=268 iops : min= 1, max= 25, avg=10.15, stdev= 4.72, samples=268 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(6348KiB/137473msec); 0 zone resets clat (usec): min=1152, max=1082.5k, avg=43429.50, stdev=48285.62 lat (usec): min=1153, max=1082.5k, avg=43434.26, stdev=48283.60 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1565], 10.00th=[ 2737], | 20.00th=[ 5604], 30.00th=[ 10814], 40.00th=[ 20841], | 50.00th=[ 33817], 60.00th=[ 44827], 70.00th=[ 58459], | 80.00th=[ 73925], 90.00th=[ 99091], 95.00th=[ 120062], | 99.00th=[ 168821], 99.50th=[ 212861], 99.90th=[ 270533], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 103, per=25.36%, avg=46.16, stdev=17.71, samples=268 iops : min= 1, max= 25, avg=10.91, stdev= 4.46, samples=268 lat (usec) : 50=0.23%, 100=3.35%, 250=0.20%, 500=0.23% lat (msec) : 2=3.97%, 4=3.94%, 10=7.42%, 20=8.95%, 50=36.10% lat (msec) : 100=28.35%, 250=7.13%, 500=0.07%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.49%, ctx=6749, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145708: Fri Jun 12 00:51:25 2026 read: IOPS=10, BW=43.8KiB/s (44.9kB/s)(6028KiB/137502msec) clat (usec): min=29, max=295967, avg=44167.48, stdev=31265.96 lat (usec): min=29, max=295969, avg=44181.92, stdev=31264.51 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 1893], 20.00th=[ 22152], | 30.00th=[ 27919], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 64750], 90.00th=[ 82314], 95.00th=[ 98042], | 99.00th=[145753], 99.50th=[164627], 99.90th=[283116], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 14, max= 95, per=25.09%, avg=43.65, stdev=17.55, samples=269 iops : min= 3, max= 23, avg=10.26, stdev= 4.42, samples=269 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(6260KiB/137502msec); 0 zone resets clat (usec): min=1072, max=1073.5k, avg=44995.23, stdev=50774.12 lat (usec): min=1072, max=1073.5k, avg=44999.25, stdev=50773.64 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1549], 10.00th=[ 2507], | 20.00th=[ 5735], 30.00th=[ 11469], 40.00th=[ 23725], | 50.00th=[ 34341], 60.00th=[ 46924], 70.00th=[ 59507], | 80.00th=[ 77071], 90.00th=[ 101188], 95.00th=[ 119014], | 99.00th=[ 166724], 99.50th=[ 231736], 99.90th=[ 549454], | 99.95th=[1069548], 99.99th=[1069548] bw ( KiB/s): min= 7, max= 96, per=24.87%, avg=45.26, stdev=18.02, samples=269 iops : min= 1, max= 24, avg=10.68, stdev= 4.54, samples=269 lat (usec) : 50=0.33%, 100=4.13%, 250=0.20%, 500=0.16%, 750=0.03% lat (msec) : 2=3.97%, 4=3.94%, 10=6.80%, 20=7.65%, 50=36.52% lat (msec) : 100=28.65%, 250=7.39%, 500=0.16%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.52%, ctx=6768, 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=145709: Fri Jun 12 00:51:25 2026 read: IOPS=11, BW=44.2KiB/s (45.2kB/s)(6052KiB/137006msec) clat (usec): min=33, max=998076, avg=46068.20, stdev=42880.05 lat (usec): min=33, max=998078, avg=46104.55, stdev=42924.57 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 9634], 20.00th=[ 22152], | 30.00th=[ 27919], 40.00th=[ 33162], 50.00th=[ 38536], 60.00th=[ 46400], | 70.00th=[ 56886], 80.00th=[ 66847], 90.00th=[ 84411], 95.00th=[100140], | 99.00th=[145753], 99.50th=[206570], 99.90th=[501220], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 102, per=25.26%, avg=43.94, stdev=18.15, samples=268 iops : min= 1, max= 25, avg=10.33, stdev= 4.55, samples=268 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(6236KiB/137006msec); 0 zone resets clat (usec): min=1155, max=436145, avg=42789.32, stdev=43181.64 lat (usec): min=1157, max=436146, avg=42795.24, stdev=43179.43 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1500], 10.00th=[ 2147], 20.00th=[ 5145], | 30.00th=[ 9372], 40.00th=[ 20579], 50.00th=[ 31589], 60.00th=[ 42730], | 70.00th=[ 56361], 80.00th=[ 74974], 90.00th=[101188], 95.00th=[123208], | 99.00th=[173016], 99.50th=[198181], 99.90th=[341836], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 7, max= 110, per=24.96%, avg=45.43, stdev=17.97, samples=267 iops : min= 1, max= 27, avg=10.71, stdev= 4.54, samples=267 lat (usec) : 50=0.23%, 100=3.42%, 250=0.39%, 500=0.20%, 750=0.10% lat (usec) : 1000=0.13% lat (msec) : 2=4.69%, 4=3.87%, 10=7.85%, 20=7.58%, 50=36.20% lat (msec) : 100=27.57%, 250=7.52%, 500=0.20%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.45%, ctx=6736, 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=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=175KiB/s (179kB/s), 43.2KiB/s-44.2KiB/s (44.2kB/s-45.2kB/s), io=23.4MiB (24.6MB), run=135978-137502msec WRITE: bw=183KiB/s (187kB/s), 45.5KiB/s-46.3KiB/s (46.6kB/s-47.4kB/s), io=24.6MiB (25.7MB), run=135978-137502msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145702: Fri Jun 12 00:53:51 2026 read: IOPS=5, BW=21.2KiB/s (21.7kB/s)(5992KiB/282236msec) clat (msec): min=6, max=1129, avg=38.60, stdev=48.72 lat (msec): min=6, max=1129, avg=38.61, stdev=48.72 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 53], 90.00th=[ 81], 95.00th=[ 112], | 99.00th=[ 205], 99.50th=[ 292], 99.90th=[ 451], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 87, per=28.74%, avg=24.14, stdev=15.47, samples=479 iops : min= 1, max= 21, avg= 5.39, stdev= 3.90, samples=479 write: IOPS=5, BW=22.3KiB/s (22.8kB/s)(6296KiB/282236msec); 0 zone resets clat (msec): min=41, max=521, avg=142.26, stdev=63.25 lat (msec): min=41, max=521, avg=142.27, stdev=63.25 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 78], 20.00th=[ 92], | 30.00th=[ 104], 40.00th=[ 116], 50.00th=[ 130], 60.00th=[ 144], | 70.00th=[ 163], 80.00th=[ 188], 90.00th=[ 226], 95.00th=[ 257], | 99.00th=[ 355], 99.50th=[ 397], 99.90th=[ 518], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 7, max= 56, per=25.02%, avg=22.01, stdev= 9.64, samples=549 iops : min= 1, max= 14, avg= 4.85, stdev= 2.45, samples=549 lat (msec) : 10=1.92%, 20=16.63%, 50=20.21%, 100=20.51%, 250=37.40% lat (msec) : 500=3.22%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.39%, ctx=5264, 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=145703: Fri Jun 12 00:53:51 2026 read: IOPS=5, BW=21.0KiB/s (21.5kB/s)(5940KiB/282338msec) clat (msec): min=6, max=1004, avg=36.84, stdev=44.79 lat (msec): min=6, max=1004, avg=36.85, stdev=44.78 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 49], 90.00th=[ 77], 95.00th=[ 103], | 99.00th=[ 192], 99.50th=[ 239], 99.90th=[ 443], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 88, per=28.28%, avg=23.76, stdev=15.91, samples=481 iops : min= 1, max= 22, avg= 5.30, stdev= 4.03, samples=481 write: IOPS=5, BW=22.5KiB/s (23.0kB/s)(6348KiB/282338msec); 0 zone resets clat (msec): min=34, max=628, avg=143.12, stdev=64.26 lat (msec): min=34, max=628, avg=143.13, stdev=64.26 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 71], 10.00th=[ 80], 20.00th=[ 91], | 30.00th=[ 105], 40.00th=[ 116], 50.00th=[ 130], 60.00th=[ 146], | 70.00th=[ 163], 80.00th=[ 184], 90.00th=[ 224], 95.00th=[ 271], | 99.00th=[ 355], 99.50th=[ 426], 99.90th=[ 584], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 7, max= 47, per=25.19%, avg=22.17, stdev= 9.53, samples=549 iops : min= 1, max= 11, avg= 4.89, stdev= 2.43, samples=549 lat (msec) : 10=1.95%, 20=17.12%, 50=20.38%, 100=19.69%, 250=36.91% lat (msec) : 500=3.84%, 750=0.07%, 2000=0.03% cpu : usr=0.05%, sys=1.37%, ctx=5207, 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=145705: Fri Jun 12 00:53:51 2026 read: IOPS=5, BW=21.3KiB/s (21.8kB/s)(6028KiB/283397msec) clat (msec): min=5, max=449, avg=38.70, stdev=38.63 lat (msec): min=5, max=449, avg=38.70, stdev=38.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 56], 90.00th=[ 84], 95.00th=[ 110], | 99.00th=[ 197], 99.50th=[ 245], 99.90th=[ 326], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 7, max= 95, per=27.78%, avg=23.34, stdev=15.48, samples=498 iops : min= 1, max= 23, avg= 5.20, stdev= 3.92, samples=498 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6260KiB/283397msec); 0 zone resets clat (msec): min=38, max=1112, avg=143.51, stdev=69.07 lat (msec): min=38, max=1112, avg=143.51, stdev=69.07 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 80], 20.00th=[ 92], | 30.00th=[ 105], 40.00th=[ 117], 50.00th=[ 129], 60.00th=[ 142], | 70.00th=[ 161], 80.00th=[ 186], 90.00th=[ 226], 95.00th=[ 266], | 99.00th=[ 372], 99.50th=[ 418], 99.90th=[ 634], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 63, per=24.96%, avg=21.96, stdev= 9.59, samples=548 iops : min= 1, max= 15, avg= 4.86, stdev= 2.45, samples=548 lat (msec) : 10=2.57%, 20=14.29%, 50=21.97%, 100=20.54%, 250=37.04% lat (msec) : 500=3.42%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.36%, ctx=5175, 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=145707: Fri Jun 12 00:53:51 2026 read: IOPS=5, BW=21.6KiB/s (22.2kB/s)(6052KiB/279666msec) clat (msec): min=5, max=444, avg=37.04, stdev=37.88 lat (msec): min=5, max=444, avg=37.04, stdev=37.88 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 50], 90.00th=[ 82], 95.00th=[ 109], | 99.00th=[ 205], 99.50th=[ 234], 99.90th=[ 355], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 103, per=28.94%, avg=24.31, stdev=16.25, samples=480 iops : min= 1, max= 25, avg= 5.44, stdev= 4.09, samples=480 write: IOPS=5, BW=22.3KiB/s (22.8kB/s)(6236KiB/279666msec); 0 zone resets clat (msec): min=39, max=1181, avg=143.12, stdev=68.87 lat (msec): min=39, max=1181, avg=143.13, stdev=68.87 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 91], | 30.00th=[ 105], 40.00th=[ 118], 50.00th=[ 130], 60.00th=[ 144], | 70.00th=[ 161], 80.00th=[ 186], 90.00th=[ 228], 95.00th=[ 259], | 99.00th=[ 342], 99.50th=[ 393], 99.90th=[ 634], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 48, per=24.97%, avg=21.98, stdev= 9.48, samples=545 iops : min= 1, max= 12, avg= 4.84, stdev= 2.41, samples=545 lat (msec) : 10=1.82%, 20=16.11%, 50=22.14%, 100=20.08%, 250=36.49% lat (msec) : 500=3.22%, 750=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.41%, ctx=5210, 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=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=84.7KiB/s (86.8kB/s), 21.0KiB/s-21.6KiB/s (21.5kB/s-22.2kB/s), io=23.4MiB (24.6MB), run=279666-283397msec WRITE: bw=88.7KiB/s (90.8kB/s), 22.1KiB/s-22.5KiB/s (22.6kB/s-23.0kB/s), io=24.6MiB (25.7MB), run=279666-283397msec 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=145766: Fri Jun 12 00:54:31 2026 read: IOPS=11, BW=186KiB/s (191kB/s)(5920KiB/31752msec) clat (usec): min=36, max=195894, avg=43133.60, stdev=34228.27 lat (usec): min=37, max=195896, avg=43141.99, stdev=34219.69 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 60], 10.00th=[ 69], 20.00th=[ 130], | 30.00th=[ 26608], 40.00th=[ 32637], 50.00th=[ 40109], 60.00th=[ 49021], | 70.00th=[ 58983], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[102237], | 99.00th=[145753], 99.50th=[166724], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 55, max= 477, per=24.49%, avg=184.66, stdev=73.98, samples=62 iops : min= 3, max= 29, avg=10.77, stdev= 4.64, samples=62 write: IOPS=12, BW=201KiB/s (205kB/s)(6368KiB/31752msec); 0 zone resets clat (usec): min=1672, max=262654, avg=39145.69, stdev=44417.76 lat (usec): min=1674, max=262656, avg=39148.50, stdev=44418.55 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 2573], 10.00th=[ 3818], 20.00th=[ 6849], | 30.00th=[ 9765], 40.00th=[ 14222], 50.00th=[ 22938], 60.00th=[ 34341], | 70.00th=[ 46924], 80.00th=[ 66323], 90.00th=[ 91751], 95.00th=[122160], | 99.00th=[225444], 99.50th=[250610], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 27, max= 572, per=25.22%, avg=200.02, stdev=104.64, samples=62 iops : min= 1, max= 35, avg=11.74, stdev= 6.56, samples=62 lat (usec) : 50=0.91%, 100=8.20%, 250=1.30%, 500=0.13%, 750=0.39% lat (usec) : 1000=0.13% lat (msec) : 2=0.78%, 4=4.43%, 10=10.68%, 20=9.38%, 50=30.99% lat (msec) : 100=25.91%, 250=6.51%, 500=0.26% cpu : usr=0.10%, sys=6.28%, ctx=1561, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145767: Fri Jun 12 00:54:31 2026 read: IOPS=11, BW=183KiB/s (187kB/s)(5744KiB/31393msec) clat (usec): min=42, max=215722, avg=47149.59, stdev=33767.14 lat (usec): min=42, max=215723, avg=47151.14, stdev=33767.12 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 69], 10.00th=[ 86], 20.00th=[ 21890], | 30.00th=[ 29754], 40.00th=[ 39060], 50.00th=[ 45351], 60.00th=[ 51119], | 70.00th=[ 59507], 80.00th=[ 71828], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[143655], 99.50th=[156238], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 383, per=24.51%, avg=184.83, stdev=71.98, samples=60 iops : min= 1, max= 23, avg=10.80, stdev= 4.49, samples=60 write: IOPS=13, BW=208KiB/s (213kB/s)(6544KiB/31393msec); 0 zone resets clat (usec): min=1564, max=381828, avg=34857.88, stdev=39039.42 lat (usec): min=1566, max=381830, avg=34889.39, stdev=39019.29 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2409], 10.00th=[ 3359], 20.00th=[ 5866], | 30.00th=[ 8586], 40.00th=[ 12649], 50.00th=[ 20579], 60.00th=[ 33162], | 70.00th=[ 45351], 80.00th=[ 58983], 90.00th=[ 88605], 95.00th=[102237], | 99.00th=[158335], 99.50th=[193987], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 31, max= 540, per=26.00%, avg=206.16, stdev=97.05, samples=61 iops : min= 1, max= 33, avg=12.13, stdev= 6.12, samples=61 lat (usec) : 50=0.39%, 100=4.95%, 250=1.82%, 500=0.26%, 750=0.13% lat (msec) : 2=1.30%, 4=5.47%, 10=11.85%, 20=8.85%, 50=31.90% lat (msec) : 100=26.69%, 250=6.25%, 500=0.13% cpu : usr=0.10%, sys=6.74%, ctx=1682, 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=145768: Fri Jun 12 00:54:31 2026 read: IOPS=12, BW=205KiB/s (210kB/s)(6256KiB/30536msec) clat (usec): min=38, max=186715, avg=42820.61, stdev=33098.32 lat (usec): min=39, max=186717, avg=42822.11, stdev=33098.36 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 163], | 30.00th=[ 26608], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 47449], | 70.00th=[ 54789], 80.00th=[ 67634], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[147850], 99.50th=[164627], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 31, max= 413, per=27.22%, avg=205.27, stdev=76.66, samples=60 iops : min= 1, max= 25, avg=12.08, stdev= 4.80, samples=60 write: IOPS=12, BW=198KiB/s (202kB/s)(6032KiB/30536msec); 0 zone resets clat (usec): min=1731, max=302110, avg=36070.39, stdev=36513.45 lat (usec): min=1733, max=302113, avg=36082.29, stdev=36515.62 clat percentiles (usec): | 1.00th=[ 1991], 5.00th=[ 2573], 10.00th=[ 4015], 20.00th=[ 7832], | 30.00th=[ 11469], 40.00th=[ 15270], 50.00th=[ 24249], 60.00th=[ 33424], | 70.00th=[ 44827], 80.00th=[ 61080], 90.00th=[ 86508], 95.00th=[107480], | 99.00th=[149947], 99.50th=[179307], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 63, max= 351, per=24.71%, avg=195.92, stdev=77.32, samples=60 iops : min= 3, max= 21, avg=11.48, stdev= 4.85, samples=60 lat (usec) : 50=0.91%, 100=8.33%, 250=1.30%, 500=0.26% lat (msec) : 2=0.65%, 4=4.30%, 10=8.72%, 20=10.29%, 50=34.64% lat (msec) : 100=25.00%, 250=5.47%, 500=0.13% cpu : usr=0.07%, sys=6.74%, ctx=1606, 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=145769: Fri Jun 12 00:54:31 2026 read: IOPS=12, BW=197KiB/s (202kB/s)(6032KiB/30587msec) clat (usec): min=33, max=311449, avg=44038.96, stdev=38452.83 lat (usec): min=33, max=311451, avg=44044.88, stdev=38457.40 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 66], 10.00th=[ 72], 20.00th=[ 159], | 30.00th=[ 26084], 40.00th=[ 35390], 50.00th=[ 43254], 60.00th=[ 49546], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[233833], 99.50th=[265290], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 63, max= 381, per=25.96%, avg=195.72, stdev=73.11, samples=60 iops : min= 3, max= 23, avg=11.50, stdev= 4.63, samples=60 write: IOPS=12, BW=205KiB/s (209kB/s)(6256KiB/30587msec); 0 zone resets clat (usec): min=1603, max=208077, avg=35559.97, stdev=36404.08 lat (usec): min=1606, max=208080, avg=35563.14, stdev=36404.62 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 3130], 10.00th=[ 4621], 20.00th=[ 7832], | 30.00th=[ 10552], 40.00th=[ 15139], 50.00th=[ 21890], 60.00th=[ 31065], | 70.00th=[ 42206], 80.00th=[ 62129], 90.00th=[ 89654], 95.00th=[111674], | 99.00th=[160433], 99.50th=[196084], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 27, max= 444, per=25.86%, avg=205.03, stdev=86.43, samples=60 iops : min= 1, max= 27, avg=12.07, stdev= 5.34, samples=60 lat (usec) : 50=0.52%, 100=7.94%, 250=1.95%, 500=0.39%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=1.04%, 4=3.39%, 10=10.42%, 20=10.16%, 50=32.42% lat (msec) : 100=25.26%, 250=5.86%, 500=0.26% cpu : usr=0.05%, sys=6.28%, ctx=1592, 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=754KiB/s (772kB/s), 183KiB/s-205KiB/s (187kB/s-210kB/s), io=23.4MiB (24.5MB), run=30536-31752msec WRITE: bw=794KiB/s (813kB/s), 198KiB/s-208KiB/s (202kB/s-213kB/s), io=24.6MiB (25.8MB), run=30536-31752msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145771: Fri Jun 12 00:55:09 2026 read: IOPS=5, BW=86.3KiB/s (88.4kB/s)(5920KiB/68608msec) clat (msec): min=7, max=291, avg=39.36, stdev=40.17 lat (msec): min=7, max=291, avg=39.36, stdev=40.17 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 85], 95.00th=[ 133], | 99.00th=[ 203], 99.50th=[ 271], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 349, per=27.73%, avg=96.76, stdev=58.81, samples=119 iops : min= 1, max= 21, avg= 5.29, stdev= 3.73, samples=119 write: IOPS=5, BW=92.8KiB/s (95.0kB/s)(6368KiB/68608msec); 0 zone resets clat (msec): min=47, max=519, avg=135.46, stdev=66.56 lat (msec): min=47, max=519, avg=135.47, stdev=66.56 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 110], 50.00th=[ 117], 60.00th=[ 128], | 70.00th=[ 148], 80.00th=[ 174], 90.00th=[ 220], 95.00th=[ 279], | 99.00th=[ 372], 99.50th=[ 405], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 24, max= 190, per=25.48%, avg=93.53, stdev=42.13, samples=133 iops : min= 1, max= 11, avg= 5.07, stdev= 2.68, samples=133 lat (msec) : 10=1.43%, 20=14.58%, 50=22.79%, 100=22.66%, 250=34.90% lat (msec) : 500=3.52%, 750=0.13% cpu : usr=0.04%, sys=1.66%, ctx=1393, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145772: Fri Jun 12 00:55:09 2026 read: IOPS=5, BW=84.2KiB/s (86.2kB/s)(5744KiB/68216msec) clat (msec): min=5, max=233, avg=37.91, stdev=34.61 lat (msec): min=5, max=233, avg=37.91, stdev=34.61 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 54], 90.00th=[ 75], 95.00th=[ 111], | 99.00th=[ 188], 99.50th=[ 222], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 24, max= 345, per=28.67%, avg=100.05, stdev=61.40, samples=112 iops : min= 1, max= 21, avg= 5.48, stdev= 3.90, samples=112 write: IOPS=5, BW=95.9KiB/s (98.2kB/s)(6544KiB/68216msec); 0 zone resets clat (msec): min=45, max=489, avg=133.27, stdev=64.11 lat (msec): min=45, max=489, avg=133.27, stdev=64.11 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 73], 20.00th=[ 86], | 30.00th=[ 94], 40.00th=[ 105], 50.00th=[ 115], 60.00th=[ 126], | 70.00th=[ 142], 80.00th=[ 180], 90.00th=[ 224], 95.00th=[ 255], | 99.00th=[ 338], 99.50th=[ 380], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 24, max= 191, per=25.94%, avg=95.21, stdev=41.58, samples=134 iops : min= 1, max= 11, avg= 5.16, stdev= 2.67, samples=134 lat (msec) : 10=1.30%, 20=14.19%, 50=21.35%, 100=26.69%, 250=33.46% lat (msec) : 500=2.99% cpu : usr=0.04%, sys=1.69%, ctx=1376, 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=145773: Fri Jun 12 00:55:09 2026 read: IOPS=5, BW=94.4KiB/s (96.7kB/s)(6256KiB/66276msec) clat (msec): min=8, max=184, avg=36.81, stdev=31.15 lat (msec): min=8, max=184, avg=36.81, stdev=31.15 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 72], 95.00th=[ 107], | 99.00th=[ 174], 99.50th=[ 182], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 30, max= 351, per=29.43%, avg=102.70, stdev=66.19, samples=120 iops : min= 1, max= 21, avg= 5.62, stdev= 4.16, samples=120 write: IOPS=5, BW=91.0KiB/s (93.2kB/s)(6032KiB/66276msec); 0 zone resets clat (msec): min=45, max=442, avg=137.35, stdev=65.62 lat (msec): min=46, max=442, avg=137.36, stdev=65.61 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 69], 10.00th=[ 80], 20.00th=[ 87], | 30.00th=[ 97], 40.00th=[ 108], 50.00th=[ 121], 60.00th=[ 133], | 70.00th=[ 153], 80.00th=[ 176], 90.00th=[ 224], 95.00th=[ 268], | 99.00th=[ 388], 99.50th=[ 414], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 30, max= 191, per=24.90%, avg=91.38, stdev=38.10, samples=128 iops : min= 1, max= 11, avg= 4.93, stdev= 2.43, samples=128 lat (msec) : 10=1.69%, 20=15.49%, 50=23.44%, 100=22.79%, 250=33.20% lat (msec) : 500=3.39% cpu : usr=0.04%, sys=1.61%, ctx=1356, 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=145774: Fri Jun 12 00:55:09 2026 read: IOPS=5, BW=88.8KiB/s (90.9kB/s)(6032KiB/67920msec) clat (msec): min=7, max=273, avg=40.99, stdev=38.56 lat (msec): min=7, max=273, avg=40.99, stdev=38.56 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 42], 80.00th=[ 59], 90.00th=[ 94], 95.00th=[ 124], | 99.00th=[ 199], 99.50th=[ 271], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 350, per=28.88%, avg=100.79, stdev=65.70, samples=117 iops : min= 1, max= 21, avg= 5.51, stdev= 4.22, samples=117 write: IOPS=5, BW=92.1KiB/s (94.3kB/s)(6256KiB/67920msec); 0 zone resets clat (msec): min=46, max=481, avg=133.87, stdev=64.27 lat (msec): min=46, max=481, avg=133.88, stdev=64.27 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 88], | 30.00th=[ 99], 40.00th=[ 107], 50.00th=[ 116], 60.00th=[ 129], | 70.00th=[ 146], 80.00th=[ 169], 90.00th=[ 213], 95.00th=[ 262], | 99.00th=[ 397], 99.50th=[ 435], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 29, max= 190, per=25.22%, avg=92.54, stdev=39.26, samples=133 iops : min= 1, max= 11, avg= 5.00, stdev= 2.49, samples=133 lat (msec) : 10=0.91%, 20=13.54%, 50=23.44%, 100=23.31%, 250=35.55% lat (msec) : 500=3.26% cpu : usr=0.05%, sys=1.64%, ctx=1394, 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=349KiB/s (357kB/s), 84.2KiB/s-94.4KiB/s (86.2kB/s-96.7kB/s), io=23.4MiB (24.5MB), run=66276-68608msec WRITE: bw=367KiB/s (376kB/s), 91.0KiB/s-95.9KiB/s (93.2kB/s-98.2kB/s), io=24.6MiB (25.8MB), run=66276-68608msec 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=145794: Fri Jun 12 00:55:29 2026 read: IOPS=2, BW=2097KiB/s (2147kB/s)(7168KiB/3418msec) clat (msec): min=62, max=299, avg=176.94, stdev=93.04 lat (msec): min=62, max=299, avg=176.94, stdev=93.04 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 87], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 161], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 300], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 2003, max= 4551, per=100.00%, avg=2660.00, stdev=1260.81, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1498KiB/s (1534kB/s)(5120KiB/3418msec); 0 zone resets clat (msec): min=273, max=515, avg=427.41, stdev=91.82 lat (msec): min=274, max=515, avg=427.53, stdev=91.82 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 1924, max= 4071, per=84.90%, avg=2666.00, stdev=1217.41, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=4.51%, ctx=58, 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=145795: Fri Jun 12 00:55:29 2026 read: IOPS=0, BW=224KiB/s (230kB/s)(2048KiB/9131msec) clat (msec): min=124, max=142, avg=133.16, stdev=12.64 lat (msec): min=124, max=142, avg=133.17, stdev=12.64 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 125], 60.00th=[ 142], | 70.00th=[ 142], 80.00th=[ 142], 90.00th=[ 142], 95.00th=[ 142], | 99.00th=[ 142], 99.50th=[ 142], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 1532, max= 2043, per=79.73%, avg=1787.50, stdev=361.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1121KiB/s (1148kB/s)(10.0MiB/9131msec); 0 zone resets clat (msec): min=191, max=4254, avg=867.57, stdev=1206.18 lat (msec): min=191, max=4254, avg=867.66, stdev=1206.18 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 305], | 30.00th=[ 363], 40.00th=[ 422], 50.00th=[ 472], 60.00th=[ 493], | 70.00th=[ 625], 80.00th=[ 676], 90.00th=[ 885], 95.00th=[ 4245], | 99.00th=[ 4245], 99.50th=[ 4245], 99.90th=[ 4245], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 1532, max= 4023, per=70.61%, avg=2217.25, stdev=750.36, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 250=25.00%, 500=41.67%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.13%, ctx=155, 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=145796: Fri Jun 12 00:55:29 2026 read: IOPS=0, BW=703KiB/s (720kB/s)(6144KiB/8743msec) clat (msec): min=75, max=427, avg=267.76, stdev=127.50 lat (msec): min=75, max=427, avg=267.76, stdev=127.50 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 292], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1924, max= 2048, per=89.75%, avg=2012.20, stdev=51.31, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=703KiB/s (720kB/s)(6144KiB/8743msec); 0 zone resets clat (msec): min=306, max=4357, avg=1164.49, stdev=1571.36 lat (msec): min=306, max=4357, avg=1164.58, stdev=1571.35 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 651], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 1568, max= 2048, per=61.06%, avg=1917.20, stdev=201.42, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=16.67%, 500=41.67%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=2.76%, ctx=87, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145797: Fri Jun 12 00:55:29 2026 read: IOPS=0, BW=667KiB/s (683kB/s)(5120KiB/7678msec) clat (msec): min=148, max=521, avg=320.45, stdev=167.41 lat (msec): min=148, max=521, avg=320.45, stdev=167.41 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 2035, max= 3849, per=100.00%, avg=2642.33, stdev=1045.01, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=934KiB/s (956kB/s)(7168KiB/7678msec); 0 zone resets clat (msec): min=245, max=4068, avg=848.39, stdev=1420.50 lat (msec): min=245, max=4068, avg=848.48, stdev=1420.50 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 284], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 334], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 359], 90.00th=[ 4077], 95.00th=[ 4077], | 99.00th=[ 4077], 99.50th=[ 4077], 99.90th=[ 4077], 99.95th=[ 4077], | 99.99th=[ 4077] bw ( KiB/s): min= 1553, max= 4087, per=93.07%, avg=2922.50, stdev=1314.19, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 250=25.00%, 500=58.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=2.63%, ctx=97, 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=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=2243KiB/s (2297kB/s), 224KiB/s-2097KiB/s (230kB/s-2147kB/s), io=20.0MiB (20.0MB), run=3418-9131msec WRITE: bw=3140KiB/s (3215kB/s), 703KiB/s-1498KiB/s (720kB/s-1534kB/s), io=28.0MiB (29.4MB), run=3418-9131msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145799: Fri Jun 12 00:55:29 2026 read: IOPS=2, BW=2312KiB/s (2368kB/s)(7168KiB/3100msec) clat (usec): min=527, max=536107, avg=265341.44, stdev=166159.44 lat (usec): min=529, max=536109, avg=265343.27, stdev=166159.55 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[202376], | 30.00th=[217056], 40.00th=[217056], 50.00th=[240124], 60.00th=[270533], | 70.00th=[270533], 80.00th=[387974], 90.00th=[534774], 95.00th=[534774], | 99.00th=[534774], 99.50th=[534774], 99.90th=[534774], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 1841, max= 4071, per=100.00%, avg=2397.00, stdev=939.17, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1652KiB/s (1691kB/s)(5120KiB/3100msec); 0 zone resets clat (msec): min=184, max=299, avg=246.09, stdev=54.42 lat (msec): min=184, max=299, avg=246.52, stdev=54.02 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 251], 60.00th=[ 251], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 1841, max= 4055, per=81.68%, avg=2638.33, stdev=1230.09, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=18.36%, ctx=228, 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=145800: Fri Jun 12 00:55:29 2026 read: IOPS=0, BW=231KiB/s (236kB/s)(2048KiB/8875msec) clat (msec): min=10, max=258, avg=134.63, stdev=175.17 lat (msec): min=10, max=258, avg=134.63, stdev=175.17 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 11], 10.00th=[ 11], 20.00th=[ 11], | 30.00th=[ 11], 40.00th=[ 11], 50.00th=[ 11], 60.00th=[ 259], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 259], 95.00th=[ 259], | 99.00th=[ 259], 99.50th=[ 259], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 1400, max= 2015, per=74.01%, avg=1707.50, stdev=434.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1154KiB/s (1181kB/s)(10.0MiB/8875msec); 0 zone resets clat (msec): min=208, max=4333, avg=860.20, stdev=1231.25 lat (msec): min=209, max=4333, avg=860.41, stdev=1231.20 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 321], | 30.00th=[ 326], 40.00th=[ 443], 50.00th=[ 498], 60.00th=[ 518], | 70.00th=[ 575], 80.00th=[ 592], 90.00th=[ 785], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 2007, max= 3657, per=69.02%, avg=2229.25, stdev=577.06, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 20=8.33%, 250=8.33%, 500=41.67%, 750=25.00%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.03%, sys=6.14%, ctx=210, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145801: Fri Jun 12 00:55:29 2026 read: IOPS=0, BW=708KiB/s (725kB/s)(6144KiB/8680msec) clat (msec): min=2, max=408, avg=200.79, stdev=134.48 lat (msec): min=2, max=408, avg=200.79, stdev=134.48 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 222], | 70.00th=[ 239], 80.00th=[ 239], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 2007, max= 4087, per=100.00%, avg=3393.67, stdev=1200.89, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=708KiB/s (725kB/s)(6144KiB/8680msec); 0 zone resets clat (msec): min=271, max=4426, avg=1245.21, stdev=1573.10 lat (msec): min=271, max=4428, avg=1245.58, stdev=1573.57 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 776], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 4396], 95.00th=[ 4396], | 99.00th=[ 4396], 99.50th=[ 4396], 99.90th=[ 4396], 99.95th=[ 4396], | 99.99th=[ 4396] bw ( KiB/s): min= 1367, max= 2043, per=57.49%, avg=1856.80, stdev=287.73, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 4=8.33%, 250=33.33%, 500=25.00%, 1000=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=6.08%, ctx=231, 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=145802: Fri Jun 12 00:55:29 2026 read: IOPS=0, BW=694KiB/s (711kB/s)(5120KiB/7373msec) clat (usec): min=894, max=4077.1k, avg=891703.10, stdev=1788051.76 lat (usec): min=896, max=4077.1k, avg=891704.85, stdev=1788051.65 clat percentiles (usec): | 1.00th=[ 898], 5.00th=[ 898], 10.00th=[ 898], | 20.00th=[ 898], 30.00th=[ 1467], 40.00th=[ 1467], | 50.00th=[ 2868], 60.00th=[ 2868], 70.00th=[ 375391], | 80.00th=[ 375391], 90.00th=[4076864], 95.00th=[4076864], | 99.00th=[4076864], 99.50th=[4076864], 99.90th=[4076864], | 99.95th=[4076864], 99.99th=[4076864] bw ( KiB/s): min= 4087, max= 4096, per=100.00%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=0, BW=972KiB/s (996kB/s)(7168KiB/7373msec); 0 zone resets clat (msec): min=318, max=586, avg=415.22, stdev=105.58 lat (msec): min=318, max=586, avg=415.32, stdev=105.54 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 376], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 506], 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= 1372, max= 4063, per=70.25%, avg=2269.00, stdev=1039.41, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 4=8.33%, 500=50.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=8.72%, ctx=633, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2308KiB/s (2363kB/s), 231KiB/s-2312KiB/s (236kB/s-2368kB/s), io=20.0MiB (20.0MB), run=3100-8875msec WRITE: bw=3231KiB/s (3308kB/s), 708KiB/s-1652KiB/s (725kB/s-1691kB/s), io=28.0MiB (29.4MB), run=3100-8875msec 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=145810: Fri Jun 12 00:55:46 2026 read: IOPS=1, BW=4104KiB/s (4203kB/s)(12.0MiB/2994msec) clat (msec): min=803, max=1002, avg=912.08, stdev=100.84 lat (msec): min=803, max=1002, avg=912.08, stdev=100.84 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 927], | 70.00th=[ 1003], 80.00th=[ 1003], 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= 7922, max= 8159, per=100.00%, avg=8040.50, stdev=167.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.07%, sys=16.40%, ctx=421, 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=145811: Fri Jun 12 00:55:46 2026 read: IOPS=0, BW=1179KiB/s (1207kB/s)(4096KiB/3474msec) clat (nsec): min=746480k, max=746480k, avg=746480304.00, stdev= 0.00 lat (nsec): min=746484k, max=746484k, avg=746483616.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 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= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2358KiB/s (2415kB/s)(8192KiB/3474msec); 0 zone resets clat (msec): min=1011, max=1431, avg=1221.74, stdev=297.24 lat (msec): min=1012, max=1432, avg=1222.21, stdev=297.21 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1435], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7922, max= 7922, per=85.68%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.08%, ctx=74, 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=145813: Fri Jun 12 00:55:46 2026 write: IOPS=0, BW=3467KiB/s (3550kB/s)(12.0MiB/3544msec); 0 zone resets clat (msec): min=698, max=1514, avg=1139.10, stdev=411.95 lat (msec): min=698, max=1514, avg=1139.58, stdev=411.83 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7984, max= 8175, per=87.38%, avg=8079.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.28%, ctx=83, 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=145815: Fri Jun 12 00:55:46 2026 write: IOPS=1, BW=4923KiB/s (5041kB/s)(12.0MiB/2496msec); 0 zone resets clat (msec): min=431, max=1235, avg=779.46, stdev=412.77 lat (msec): min=431, max=1235, avg=779.99, stdev=412.80 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8159, max= 8175, per=88.33%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.16%, sys=6.41%, ctx=60, 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=4716KiB/s (4829kB/s), 1179KiB/s-4104KiB/s (1207kB/s-4203kB/s), io=16.0MiB (16.8MB), run=2994-3474msec WRITE: bw=9246KiB/s (9468kB/s), 2358KiB/s-4923KiB/s (2415kB/s-5041kB/s), io=32.0MiB (33.6MB), run=2496-3544msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145812: Fri Jun 12 00:55:46 2026 read: IOPS=0, BW=3733KiB/s (3822kB/s)(12.0MiB/3292msec) clat (msec): min=237, max=1504, avg=1036.27, stdev=695.35 lat (msec): min=237, max=1504, avg=1036.27, stdev=695.35 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 1368], 50.00th=[ 1368], 60.00th=[ 1368], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8062, max= 8110, per=100.00%, avg=8086.00, stdev=33.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.06%, sys=3.52%, ctx=56, 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=145814: Fri Jun 12 00:55:46 2026 read: IOPS=0, BW=1220KiB/s (1249kB/s)(4096KiB/3357msec) clat (nsec): min=468813k, max=468813k, avg=468812740.00, stdev= 0.00 lat (nsec): min=468815k, max=468815k, avg=468815499.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2440KiB/s (2499kB/s)(8192KiB/3357msec); 0 zone resets clat (msec): min=1082, max=1699, avg=1391.17, stdev=436.44 lat (msec): min=1083, max=1700, avg=1391.69, stdev=436.38 clat percentiles (msec): | 1.00th=[ 1083], 5.00th=[ 1083], 10.00th=[ 1083], 20.00th=[ 1083], | 30.00th=[ 1083], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1703], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8078, max= 8078, per=98.64%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.93%, ctx=63, 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=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=145816: Fri Jun 12 00:55:46 2026 write: IOPS=0, BW=3071KiB/s (3145kB/s)(12.0MiB/4001msec); 0 zone resets clat (msec): min=323, max=1797, avg=1271.27, stdev=822.72 lat (msec): min=323, max=1797, avg=1271.61, stdev=822.70 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 1687], 50.00th=[ 1687], 60.00th=[ 1687], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8143, max= 8143, per=99.44%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.83%, ctx=37, 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=145817: Fri Jun 12 00:55:46 2026 write: IOPS=1, BW=4604KiB/s (4714kB/s)(12.0MiB/2669msec); 0 zone resets clat (msec): min=433, max=1106, avg=850.24, stdev=364.42 lat (msec): min=435, max=1107, avg=851.34, stdev=363.68 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, 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%, 2000=66.67% cpu : usr=0.00%, sys=7.01%, ctx=62, 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=4881KiB/s (4998kB/s), 1220KiB/s-3733KiB/s (1249kB/s-3822kB/s), io=16.0MiB (16.8MB), run=3292-3357msec WRITE: bw=8190KiB/s (8387kB/s), 2440KiB/s-4604KiB/s (2499kB/s-4714kB/s), io=32.0MiB (33.6MB), run=2669-4001msec