== sanity test 398b: DIO and buffer IO race ============== 14:57:15 (1780340235) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.92581 s, 8.5 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=145959: Mon Jun 1 14:59:55 2026 read: IOPS=10, BW=43.5KiB/s (44.5kB/s)(5992KiB/137862msec) clat (usec): min=31, max=1091.0k, avg=44343.67, stdev=45588.94 lat (usec): min=32, max=1091.1k, avg=44347.54, stdev=45587.78 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 114], | 20.00th=[ 19006], 30.00th=[ 25297], 40.00th=[ 31065], | 50.00th=[ 37487], 60.00th=[ 43779], 70.00th=[ 52167], | 80.00th=[ 64750], 90.00th=[ 84411], 95.00th=[ 103285], | 99.00th=[ 183501], 99.50th=[ 212861], 99.90th=[ 583009], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 4, max= 118, per=26.06%, avg=44.30, stdev=20.76, samples=263 iops : min= 1, max= 29, avg=10.43, stdev= 5.23, samples=263 write: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6296KiB/137862msec); 0 zone resets clat (usec): min=1144, max=1402.4k, avg=45151.46, stdev=61027.69 lat (usec): min=1146, max=1402.4k, avg=45153.93, stdev=61028.40 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 2073], | 20.00th=[ 5014], 30.00th=[ 9634], 40.00th=[ 19268], | 50.00th=[ 30540], 60.00th=[ 42730], 70.00th=[ 57410], | 80.00th=[ 74974], 90.00th=[ 101188], 95.00th=[ 128451], | 99.00th=[ 227541], 99.50th=[ 312476], 99.90th=[ 583009], | 99.95th=[1400898], 99.99th=[1400898] bw ( KiB/s): min= 2, max= 102, per=25.84%, avg=45.99, stdev=20.34, samples=266 iops : min= 0, max= 25, avg=10.86, stdev= 5.13, samples=266 lat (usec) : 50=0.75%, 100=4.00%, 250=0.29%, 500=0.13%, 1000=0.03% lat (msec) : 2=4.98%, 4=3.78%, 10=7.29%, 20=10.22%, 50=34.60% lat (msec) : 100=25.91%, 250=7.49%, 500=0.39%, 750=0.07%, 2000=0.07% cpu : usr=0.06%, sys=5.40%, ctx=6539, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145960: Mon Jun 1 14:59:55 2026 read: IOPS=10, BW=42.2KiB/s (43.2kB/s)(5940KiB/140814msec) clat (usec): min=29, max=879027, avg=45218.40, stdev=44949.51 lat (usec): min=29, max=879029, avg=45220.10, stdev=44949.44 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 2474], 20.00th=[ 19268], | 30.00th=[ 25560], 40.00th=[ 30016], 50.00th=[ 36439], 60.00th=[ 44303], | 70.00th=[ 53216], 80.00th=[ 65799], 90.00th=[ 85459], 95.00th=[107480], | 99.00th=[183501], 99.50th=[229639], 99.90th=[624952], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 111, per=25.28%, avg=42.98, stdev=20.00, samples=268 iops : min= 1, max= 27, avg=10.10, stdev= 5.04, samples=268 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(6348KiB/140814msec); 0 zone resets clat (usec): min=1092, max=1490.4k, avg=46153.12, stdev=61219.54 lat (usec): min=1094, max=1490.4k, avg=46157.33, stdev=61220.77 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1336], 10.00th=[ 1860], | 20.00th=[ 5014], 30.00th=[ 10290], 40.00th=[ 22938], | 50.00th=[ 33424], 60.00th=[ 43254], 70.00th=[ 56361], | 80.00th=[ 76022], 90.00th=[ 105382], 95.00th=[ 132645], | 99.00th=[ 240124], 99.50th=[ 304088], 99.90th=[ 438305], | 99.95th=[1484784], 99.99th=[1484784] bw ( KiB/s): min= 7, max= 135, per=25.51%, avg=45.40, stdev=23.04, samples=270 iops : min= 1, max= 33, avg=10.71, stdev= 5.82, samples=270 lat (usec) : 50=0.72%, 100=3.61%, 250=0.33%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.57%, 4=3.26%, 10=7.19%, 20=8.98%, 50=36.23% lat (msec) : 100=25.26%, 250=8.11%, 500=0.52%, 750=0.03%, 1000=0.03% lat (msec) : 2000=0.03% cpu : usr=0.07%, sys=5.19%, ctx=6723, 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=145961: Mon Jun 1 14:59:55 2026 read: IOPS=10, BW=43.7KiB/s (44.7kB/s)(6028KiB/138032msec) clat (usec): min=31, max=1063.2k, avg=44793.37, stdev=45486.77 lat (usec): min=31, max=1063.2k, avg=44796.52, stdev=45486.34 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 157], | 20.00th=[ 20055], 30.00th=[ 25560], 40.00th=[ 31065], | 50.00th=[ 36439], 60.00th=[ 43254], 70.00th=[ 52167], | 80.00th=[ 63177], 90.00th=[ 84411], 95.00th=[ 109577], | 99.00th=[ 173016], 99.50th=[ 202376], 99.90th=[ 501220], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 118, per=26.08%, avg=44.34, stdev=20.92, samples=265 iops : min= 1, max= 29, avg=10.44, stdev= 5.27, samples=265 write: IOPS=11, BW=45.4KiB/s (46.4kB/s)(6260KiB/138032msec); 0 zone resets clat (usec): min=1044, max=1424.9k, avg=44842.67, stdev=60198.70 lat (usec): min=1045, max=1424.9k, avg=44846.23, stdev=60198.47 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 2089], | 20.00th=[ 5473], 30.00th=[ 9634], 40.00th=[ 19792], | 50.00th=[ 29230], 60.00th=[ 41157], 70.00th=[ 57934], | 80.00th=[ 77071], 90.00th=[ 104334], 95.00th=[ 131597], | 99.00th=[ 206570], 99.50th=[ 325059], 99.90th=[ 591397], | 99.95th=[1417675], 99.99th=[1417675] bw ( KiB/s): min= 2, max= 103, per=25.76%, avg=45.85, stdev=20.44, samples=266 iops : min= 0, max= 25, avg=10.82, stdev= 5.13, samples=266 lat (usec) : 50=1.01%, 100=3.68%, 250=0.29%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=4.92%, 4=3.16%, 10=7.68%, 20=9.34%, 50=36.65% lat (msec) : 100=24.32%, 250=8.24%, 500=0.42%, 750=0.07%, 2000=0.07% cpu : usr=0.07%, sys=5.23%, ctx=6636, 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=145962: Mon Jun 1 14:59:55 2026 read: IOPS=11, BW=44.2KiB/s (45.2kB/s)(6052KiB/137061msec) clat (usec): min=31, max=612382, avg=43979.05, stdev=42101.75 lat (usec): min=32, max=612384, avg=43980.26, stdev=42101.78 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 318], 20.00th=[ 19792], | 30.00th=[ 24773], 40.00th=[ 30016], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[106431], | 99.00th=[200279], 99.50th=[248513], 99.90th=[505414], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 6, max= 111, per=26.18%, avg=44.50, stdev=21.04, samples=265 iops : min= 1, max= 27, avg=10.48, stdev= 5.29, samples=265 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(6236KiB/137061msec); 0 zone resets clat (usec): min=1068, max=1365.5k, avg=45020.39, stdev=62523.87 lat (usec): min=1070, max=1365.5k, avg=45022.03, stdev=62524.09 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1319], 10.00th=[ 1909], | 20.00th=[ 4621], 30.00th=[ 9503], 40.00th=[ 19530], | 50.00th=[ 31851], 60.00th=[ 42730], 70.00th=[ 55313], | 80.00th=[ 74974], 90.00th=[ 104334], 95.00th=[ 135267], | 99.00th=[ 214959], 99.50th=[ 291505], 99.90th=[1019216], | 99.95th=[1367344], 99.99th=[1367344] bw ( KiB/s): min= 2, max= 110, per=25.84%, avg=45.99, stdev=20.90, samples=264 iops : min= 0, max= 27, avg=10.86, stdev= 5.27, samples=264 lat (usec) : 50=0.88%, 100=3.81%, 250=0.23%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.31%, 4=3.97%, 10=6.61%, 20=9.44%, 50=37.73% lat (msec) : 100=23.18%, 250=8.07%, 500=0.39%, 750=0.10%, 2000=0.07% cpu : usr=0.07%, sys=5.11%, ctx=6668, 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=171KiB/s (175kB/s), 42.2KiB/s-44.2KiB/s (43.2kB/s-45.2kB/s), io=23.4MiB (24.6MB), run=137061-140814msec WRITE: bw=179KiB/s (183kB/s), 45.1KiB/s-45.7KiB/s (46.2kB/s-46.8kB/s), io=24.6MiB (25.7MB), run=137061-140814msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145955: Mon Jun 1 15:02:15 2026 read: IOPS=5, BW=21.3KiB/s (21.9kB/s)(5992KiB/280685msec) clat (msec): min=5, max=1670, avg=38.91, stdev=67.08 lat (msec): min=5, max=1670, avg=38.91, stdev=67.08 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 52], 90.00th=[ 84], 95.00th=[ 117], | 99.00th=[ 234], 99.50th=[ 321], 99.90th=[ 1020], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 2, max= 94, per=28.23%, avg=24.00, stdev=16.41, samples=482 iops : min= 0, max= 23, avg= 5.37, stdev= 4.16, samples=482 write: IOPS=5, BW=22.4KiB/s (22.0kB/s)(6296KiB/280685msec); 0 zone resets clat (msec): min=29, max=1246, avg=141.09, stdev=76.27 lat (msec): min=29, max=1246, avg=141.09, stdev=76.27 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 66], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 100], 40.00th=[ 112], 50.00th=[ 124], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 182], 90.00th=[ 222], 95.00th=[ 275], | 99.00th=[ 418], 99.50th=[ 489], 99.90th=[ 768], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 63, per=25.53%, avg=22.73, stdev=10.46, samples=533 iops : min= 1, max= 15, avg= 5.05, stdev= 2.67, samples=533 lat (msec) : 10=4.39%, 20=16.99%, 50=18.07%, 100=21.65%, 250=35.12% lat (msec) : 500=3.45%, 750=0.20%, 1000=0.03%, 2000=0.10% cpu : usr=0.04%, sys=1.24%, ctx=5301, 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=145956: Mon Jun 1 15:02:15 2026 read: IOPS=5, BW=21.2KiB/s (21.7kB/s)(5940KiB/280779msec) clat (msec): min=5, max=902, avg=36.30, stdev=45.43 lat (msec): min=5, max=902, avg=36.31, stdev=45.43 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 48], 90.00th=[ 78], 95.00th=[ 114], | 99.00th=[ 203], 99.50th=[ 241], 99.90th=[ 481], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 103, per=28.90%, avg=24.57, stdev=16.59, samples=466 iops : min= 1, max= 25, avg= 5.51, stdev= 4.18, samples=466 write: IOPS=5, BW=22.6KiB/s (23.2kB/s)(6348KiB/280779msec); 0 zone resets clat (msec): min=27, max=1578, avg=142.75, stdev=81.44 lat (msec): min=27, max=1578, avg=142.76, stdev=81.44 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 66], 10.00th=[ 75], 20.00th=[ 89], | 30.00th=[ 102], 40.00th=[ 112], 50.00th=[ 124], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 184], 90.00th=[ 230], 95.00th=[ 275], | 99.00th=[ 397], 99.50th=[ 443], 99.90th=[ 978], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 55, per=25.31%, avg=22.53, stdev=10.29, samples=541 iops : min= 1, max= 13, avg= 5.00, stdev= 2.62, samples=541 lat (msec) : 10=3.78%, 20=17.45%, 50=18.36%, 100=20.93%, 250=35.29% lat (msec) : 500=4.04%, 750=0.03%, 1000=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.28%, ctx=5078, 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=145957: Mon Jun 1 15:02:15 2026 read: IOPS=5, BW=21.5KiB/s (21.0kB/s)(6028KiB/280602msec) clat (msec): min=4, max=401, avg=36.78, stdev=37.27 lat (msec): min=4, max=401, avg=36.79, stdev=37.27 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 53], 90.00th=[ 83], 95.00th=[ 109], | 99.00th=[ 182], 99.50th=[ 222], 99.90th=[ 368], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7, max= 103, per=28.63%, avg=24.34, stdev=16.44, samples=478 iops : min= 1, max= 25, avg= 5.46, stdev= 4.15, samples=478 write: IOPS=5, BW=22.3KiB/s (22.8kB/s)(6260KiB/280602msec); 0 zone resets clat (msec): min=37, max=1877, avg=143.65, stdev=90.74 lat (msec): min=37, max=1877, avg=143.66, stdev=90.74 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 90], | 30.00th=[ 101], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 140], | 70.00th=[ 157], 80.00th=[ 182], 90.00th=[ 226], 95.00th=[ 266], | 99.00th=[ 435], 99.50th=[ 592], 99.90th=[ 1116], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 7, max= 55, per=25.26%, avg=22.48, stdev=10.22, samples=536 iops : min= 1, max= 13, avg= 4.99, stdev= 2.60, samples=536 lat (msec) : 10=3.12%, 20=17.32%, 50=18.82%, 100=21.68%, 250=35.51% lat (msec) : 500=3.16%, 750=0.26%, 1000=0.07%, 2000=0.07% cpu : usr=0.03%, sys=1.23%, ctx=5104, 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=145958: Mon Jun 1 15:02:15 2026 read: IOPS=5, BW=21.6KiB/s (22.1kB/s)(6052KiB/280082msec) clat (msec): min=5, max=549, avg=36.81, stdev=43.28 lat (msec): min=5, max=549, avg=36.81, stdev=43.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 47], 90.00th=[ 82], 95.00th=[ 122], | 99.00th=[ 186], 99.50th=[ 224], 99.90th=[ 531], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 119, per=29.01%, avg=24.66, stdev=17.26, samples=474 iops : min= 1, max= 29, avg= 5.54, stdev= 4.34, samples=474 write: IOPS=5, BW=22.3KiB/s (22.8kB/s)(6236KiB/280082msec); 0 zone resets clat (msec): min=32, max=1401, avg=143.71, stdev=80.87 lat (msec): min=32, max=1401, avg=143.71, stdev=80.87 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 65], 10.00th=[ 77], 20.00th=[ 89], | 30.00th=[ 102], 40.00th=[ 113], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 159], 80.00th=[ 184], 90.00th=[ 230], 95.00th=[ 268], | 99.00th=[ 422], 99.50th=[ 558], 99.90th=[ 944], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 55, per=24.96%, avg=22.21, stdev=10.21, samples=540 iops : min= 1, max= 13, avg= 4.92, stdev= 2.61, samples=540 lat (msec) : 10=3.09%, 20=18.33%, 50=19.21%, 100=19.86%, 250=35.94% lat (msec) : 500=3.19%, 750=0.33%, 1000=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.25%, ctx=5242, 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=85.5KiB/s (87.6kB/s), 21.2KiB/s-21.6KiB/s (21.7kB/s-22.1kB/s), io=23.4MiB (24.6MB), run=280082-280779msec WRITE: bw=89.5KiB/s (91.7kB/s), 22.3KiB/s-22.6KiB/s (22.8kB/s-23.2kB/s), io=24.6MiB (25.7MB), run=280082-280779msec 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=146032: Mon Jun 1 15:02:53 2026 read: IOPS=14, BW=227KiB/s (232kB/s)(5920KiB/26097msec) clat (usec): min=33, max=261469, avg=35137.76, stdev=34801.36 lat (usec): min=34, max=261471, avg=35138.89, stdev=34801.38 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 54], 10.00th=[ 58], 20.00th=[ 70], | 30.00th=[ 13829], 40.00th=[ 22676], 50.00th=[ 30278], 60.00th=[ 37487], | 70.00th=[ 45351], 80.00th=[ 58983], 90.00th=[ 80217], 95.00th=[ 95945], | 99.00th=[152044], 99.50th=[177210], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 576, per=26.35%, avg=225.00, stdev=105.68, samples=51 iops : min= 1, max= 36, avg=13.37, stdev= 6.66, samples=51 write: IOPS=15, BW=244KiB/s (250kB/s)(6368KiB/26097msec); 0 zone resets clat (usec): min=1389, max=362431, avg=32785.52, stdev=38752.96 lat (usec): min=1391, max=362433, avg=32795.97, stdev=38755.59 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1844], 10.00th=[ 2409], 20.00th=[ 4146], | 30.00th=[ 7111], 40.00th=[ 11600], 50.00th=[ 20317], 60.00th=[ 29754], | 70.00th=[ 40109], 80.00th=[ 56361], 90.00th=[ 83362], 95.00th=[ 99091], | 99.00th=[170918], 99.50th=[235930], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 62, max= 476, per=27.11%, avg=243.47, stdev=99.20, samples=51 iops : min= 3, max= 29, avg=14.53, stdev= 6.25, samples=51 lat (usec) : 50=1.82%, 100=10.42%, 250=1.17%, 500=0.26% lat (msec) : 2=3.65%, 4=6.64%, 10=9.64%, 20=8.59%, 50=33.59% lat (msec) : 100=19.92%, 250=4.04%, 500=0.26% cpu : usr=0.08%, sys=6.38%, ctx=1324, 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=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=146033: Mon Jun 1 15:02:53 2026 read: IOPS=12, BW=205KiB/s (210kB/s)(5744KiB/28045msec) clat (usec): min=37, max=256099, avg=39739.96, stdev=32955.83 lat (usec): min=37, max=256100, avg=39741.11, stdev=32955.79 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 2638], | 30.00th=[ 24511], 40.00th=[ 30016], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 51643], 80.00th=[ 60556], 90.00th=[ 78119], 95.00th=[ 92799], | 99.00th=[173016], 99.50th=[196084], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 58, max= 412, per=23.87%, avg=203.87, stdev=81.44, samples=55 iops : min= 3, max= 25, avg=12.02, stdev= 5.12, samples=55 write: IOPS=14, BW=233KiB/s (239kB/s)(6544KiB/28045msec); 0 zone resets clat (usec): min=1535, max=237187, avg=33538.85, stdev=38029.78 lat (usec): min=1537, max=237188, avg=33541.28, stdev=38029.76 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1860], 10.00th=[ 2245], 20.00th=[ 4359], | 30.00th=[ 7373], 40.00th=[ 11207], 50.00th=[ 19792], 60.00th=[ 27919], | 70.00th=[ 42206], 80.00th=[ 60031], 90.00th=[ 88605], 95.00th=[103285], | 99.00th=[177210], 99.50th=[206570], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 63, max= 478, per=26.01%, avg=233.60, stdev=92.75, samples=55 iops : min= 3, max= 29, avg=13.89, stdev= 5.84, samples=55 lat (usec) : 50=0.91%, 100=7.55%, 250=0.65%, 500=0.13% lat (msec) : 2=3.91%, 4=6.12%, 10=10.42%, 20=8.59%, 50=33.33% lat (msec) : 100=23.83%, 250=4.43%, 500=0.13% cpu : usr=0.09%, sys=6.08%, ctx=1488, 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=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=146034: Mon Jun 1 15:02:53 2026 read: IOPS=14, BW=226KiB/s (232kB/s)(6256KiB/27666msec) clat (usec): min=34, max=193660, avg=38213.71, stdev=30750.65 lat (usec): min=34, max=193662, avg=38215.01, stdev=30750.47 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 56], 10.00th=[ 65], 20.00th=[ 1057], | 30.00th=[ 21627], 40.00th=[ 28443], 50.00th=[ 34341], 60.00th=[ 43779], | 70.00th=[ 52691], 80.00th=[ 62129], 90.00th=[ 74974], 95.00th=[ 93848], | 99.00th=[135267], 99.50th=[156238], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 31, max= 431, per=26.55%, avg=226.72, stdev=93.19, samples=54 iops : min= 1, max= 26, avg=13.46, stdev= 5.82, samples=54 write: IOPS=13, BW=218KiB/s (223kB/s)(6032KiB/27666msec); 0 zone resets clat (usec): min=1539, max=327157, avg=33635.79, stdev=36962.73 lat (usec): min=1541, max=327159, avg=33638.18, stdev=36962.67 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1876], 10.00th=[ 2802], 20.00th=[ 5080], | 30.00th=[ 8455], 40.00th=[ 13435], 50.00th=[ 22152], 60.00th=[ 30016], | 70.00th=[ 43779], 80.00th=[ 59507], 90.00th=[ 78119], 95.00th=[107480], | 99.00th=[152044], 99.50th=[191890], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 62, max= 467, per=23.89%, avg=214.56, stdev=97.27, samples=54 iops : min= 3, max= 29, avg=12.70, stdev= 6.16, samples=54 lat (usec) : 50=1.43%, 100=7.81%, 250=0.39%, 500=0.26%, 1000=0.26% lat (msec) : 2=4.30%, 4=3.65%, 10=10.16%, 20=9.24%, 50=33.59% lat (msec) : 100=24.09%, 250=4.69%, 500=0.13% cpu : usr=0.10%, sys=6.12%, ctx=1485, 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=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=146035: Mon Jun 1 15:02:53 2026 read: IOPS=14, BW=225KiB/s (230kB/s)(6032KiB/26857msec) clat (usec): min=31, max=214770, avg=36856.69, stdev=30459.19 lat (usec): min=31, max=214771, avg=36857.83, stdev=30459.16 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 92], | 30.00th=[ 21365], 40.00th=[ 28705], 50.00th=[ 34866], 60.00th=[ 42206], | 70.00th=[ 48497], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[121111], 99.50th=[135267], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 59, max= 507, per=26.23%, avg=223.96, stdev=90.24, samples=53 iops : min= 3, max= 31, avg=13.28, stdev= 5.65, samples=53 write: IOPS=14, BW=233KiB/s (239kB/s)(6256KiB/26857msec); 0 zone resets clat (usec): min=1493, max=230011, avg=33088.16, stdev=36444.54 lat (usec): min=1495, max=230013, avg=33090.38, stdev=36444.53 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1860], 10.00th=[ 2868], 20.00th=[ 5342], | 30.00th=[ 7439], 40.00th=[ 12256], 50.00th=[ 19792], 60.00th=[ 30016], | 70.00th=[ 39584], 80.00th=[ 57934], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[173016], 99.50th=[202376], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 31, max= 448, per=25.95%, avg=233.04, stdev=102.90, samples=53 iops : min= 1, max= 28, avg=13.87, stdev= 6.49, samples=53 lat (usec) : 50=1.30%, 100=9.11%, 250=1.04%, 1000=0.26% lat (msec) : 2=3.65%, 4=4.56%, 10=9.77%, 20=10.03%, 50=34.24% lat (msec) : 100=22.27%, 250=3.78% cpu : usr=0.08%, sys=5.93%, ctx=1456, 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=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=854KiB/s (875kB/s), 205KiB/s-227KiB/s (210kB/s-232kB/s), io=23.4MiB (24.5MB), run=26097-28045msec WRITE: bw=899KiB/s (920kB/s), 218KiB/s-244KiB/s (223kB/s-250kB/s), io=24.6MiB (25.8MB), run=26097-28045msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146027: Mon Jun 1 15:03:34 2026 read: IOPS=5, BW=85.9KiB/s (87.9kB/s)(5920KiB/68931msec) clat (msec): min=6, max=244, avg=37.38, stdev=38.85 lat (msec): min=6, max=244, avg=37.38, stdev=38.85 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 79], 95.00th=[ 115], | 99.00th=[ 232], 99.50th=[ 245], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 31, max= 287, per=29.22%, avg=99.95, stdev=59.11, samples=116 iops : min= 1, max= 17, avg= 5.48, stdev= 3.79, samples=116 write: IOPS=5, BW=92.4KiB/s (94.6kB/s)(6368KiB/68931msec); 0 zone resets clat (msec): min=46, max=358, avg=137.93, stdev=56.82 lat (msec): min=46, max=358, avg=137.93, stdev=56.82 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 72], 10.00th=[ 79], 20.00th=[ 92], | 30.00th=[ 103], 40.00th=[ 113], 50.00th=[ 125], 60.00th=[ 140], | 70.00th=[ 155], 80.00th=[ 180], 90.00th=[ 215], 95.00th=[ 255], | 99.00th=[ 326], 99.50th=[ 351], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 191, per=26.05%, avg=93.51, stdev=37.74, samples=134 iops : min= 1, max= 11, avg= 5.07, stdev= 2.39, samples=134 lat (msec) : 10=1.82%, 20=15.10%, 50=23.05%, 100=20.05%, 250=37.24% lat (msec) : 500=2.73% cpu : usr=0.03%, sys=1.41%, ctx=1290, 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=146028: Mon Jun 1 15:03:34 2026 read: IOPS=5, BW=82.0KiB/s (83.0kB/s)(5744KiB/70031msec) clat (msec): min=7, max=256, avg=36.79, stdev=34.83 lat (msec): min=7, max=256, avg=36.79, stdev=34.83 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 51], 90.00th=[ 75], 95.00th=[ 100], | 99.00th=[ 188], 99.50th=[ 247], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 22, max= 379, per=28.30%, avg=96.80, stdev=63.02, samples=116 iops : min= 1, max= 23, avg= 5.28, stdev= 3.98, samples=116 write: IOPS=5, BW=93.4KiB/s (95.7kB/s)(6544KiB/70031msec); 0 zone resets clat (msec): min=41, max=394, avg=138.50, stdev=54.51 lat (msec): min=41, max=394, avg=138.50, stdev=54.51 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 69], 10.00th=[ 81], 20.00th=[ 94], | 30.00th=[ 104], 40.00th=[ 115], 50.00th=[ 127], 60.00th=[ 142], | 70.00th=[ 161], 80.00th=[ 178], 90.00th=[ 218], 95.00th=[ 241], | 99.00th=[ 288], 99.50th=[ 321], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 31, max= 191, per=25.93%, avg=93.09, stdev=36.98, samples=137 iops : min= 1, max= 11, avg= 5.05, stdev= 2.39, samples=137 lat (msec) : 10=1.56%, 20=14.84%, 50=20.83%, 100=21.48%, 250=39.06% lat (msec) : 500=2.21% cpu : usr=0.03%, sys=1.44%, ctx=1344, 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=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=146029: Mon Jun 1 15:03:34 2026 read: IOPS=5, BW=92.3KiB/s (94.5kB/s)(6256KiB/67808msec) clat (msec): min=8, max=384, avg=36.08, stdev=35.48 lat (msec): min=8, max=384, avg=36.08, stdev=35.48 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 45], 90.00th=[ 73], 95.00th=[ 107], | 99.00th=[ 167], 99.50th=[ 255], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 30, max= 381, per=30.10%, avg=102.95, stdev=72.36, samples=120 iops : min= 1, max= 23, avg= 5.68, stdev= 4.59, samples=120 write: IOPS=5, BW=88.0KiB/s (91.1kB/s)(6032KiB/67808msec); 0 zone resets clat (msec): min=41, max=456, avg=142.02, stdev=61.55 lat (msec): min=41, max=456, avg=142.02, stdev=61.55 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 72], 10.00th=[ 85], 20.00th=[ 94], | 30.00th=[ 107], 40.00th=[ 118], 50.00th=[ 128], 60.00th=[ 144], | 70.00th=[ 157], 80.00th=[ 178], 90.00th=[ 220], 95.00th=[ 266], | 99.00th=[ 368], 99.50th=[ 426], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 31, max= 159, per=24.84%, avg=89.16, stdev=34.30, samples=133 iops : min= 1, max= 9, avg= 4.80, stdev= 2.21, samples=133 lat (msec) : 10=1.17%, 20=15.76%, 50=25.52%, 100=17.97%, 250=36.20% lat (msec) : 500=3.39% cpu : usr=0.05%, sys=1.40%, ctx=1328, 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=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=146030: Mon Jun 1 15:03:34 2026 read: IOPS=5, BW=86.6KiB/s (88.7kB/s)(6032KiB/69635msec) clat (msec): min=6, max=373, avg=37.38, stdev=38.82 lat (msec): min=6, max=373, avg=37.38, stdev=38.82 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 45], 90.00th=[ 75], 95.00th=[ 114], | 99.00th=[ 203], 99.50th=[ 241], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 256, per=27.35%, avg=93.54, stdev=60.20, samples=125 iops : min= 1, max= 16, avg= 5.08, stdev= 3.82, samples=125 write: IOPS=5, BW=89.8KiB/s (91.0kB/s)(6256KiB/69635msec); 0 zone resets clat (msec): min=48, max=443, avg=141.91, stdev=61.40 lat (msec): min=48, max=443, avg=141.92, stdev=61.40 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 72], 10.00th=[ 84], 20.00th=[ 95], | 30.00th=[ 105], 40.00th=[ 116], 50.00th=[ 129], 60.00th=[ 142], | 70.00th=[ 159], 80.00th=[ 182], 90.00th=[ 218], 95.00th=[ 264], | 99.00th=[ 384], 99.50th=[ 414], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 31, max= 159, per=25.18%, avg=90.39, stdev=35.43, samples=135 iops : min= 1, max= 9, avg= 4.87, stdev= 2.27, samples=135 lat (msec) : 10=1.69%, 20=15.36%, 50=23.70%, 100=17.71%, 250=38.02% lat (msec) : 500=3.52% cpu : usr=0.04%, sys=1.31%, ctx=1327, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=342KiB/s (350kB/s), 82.0KiB/s-92.3KiB/s (83.0kB/s-94.5kB/s), io=23.4MiB (24.5MB), run=67808-70031msec WRITE: bw=360KiB/s (368kB/s), 88.0KiB/s-93.4KiB/s (91.1kB/s-95.7kB/s), io=24.6MiB (25.8MB), run=67808-70031msec 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=146054: Mon Jun 1 15:03:49 2026 read: IOPS=2, BW=2541KiB/s (2602kB/s)(7168KiB/2821msec) clat (usec): min=525, max=320542, avg=181614.48, stdev=95068.14 lat (usec): min=526, max=320543, avg=181616.02, stdev=95068.19 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[168821], | 30.00th=[175113], 40.00th=[175113], 50.00th=[189793], 60.00th=[191890], | 70.00th=[191890], 80.00th=[223347], 90.00th=[320865], 95.00th=[320865], | 99.00th=[320865], 99.50th=[320865], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 2027, max= 4162, per=47.24%, avg=2568.75, stdev=1062.19, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1815KiB/s (1859kB/s)(5120KiB/2821msec); 0 zone resets clat (msec): min=239, max=343, avg=302.10, stdev=39.60 lat (msec): min=239, max=343, avg=302.19, stdev=39.61 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 2027, max= 4055, per=35.58%, avg=2708.33, stdev=1166.27, 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=41.67% cpu : usr=0.04%, sys=17.27%, ctx=278, 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=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=146055: Mon Jun 1 15:03:49 2026 read: IOPS=0, BW=544KiB/s (557kB/s)(2048KiB/3766msec) clat (usec): min=1642, max=275544, avg=138593.26, stdev=193677.75 lat (usec): min=1643, max=275547, avg=138595.23, stdev=193679.07 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1647], 10.00th=[ 1647], 20.00th=[ 1647], | 30.00th=[ 1647], 40.00th=[ 1647], 50.00th=[ 1647], 60.00th=[274727], | 70.00th=[274727], 80.00th=[274727], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 1488, max= 2011, per=32.17%, avg=1749.50, stdev=369.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2719KiB/s (2784kB/s)(10.0MiB/3766msec); 0 zone resets clat (msec): min=79, max=1444, avg=342.40, stdev=412.38 lat (msec): min=79, max=1444, avg=342.55, stdev=412.43 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 88], | 30.00th=[ 103], 40.00th=[ 130], 50.00th=[ 218], 60.00th=[ 234], | 70.00th=[ 264], 80.00th=[ 317], 90.00th=[ 550], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 2011, max= 8175, per=60.29%, avg=4590.00, stdev=2582.60, samples=4 iops : min= 1, max= 7, avg= 3.50, stdev= 2.52, samples=4 lat (msec) : 2=8.33%, 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.03%, sys=14.21%, ctx=143, 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=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=146056: Mon Jun 1 15:03:49 2026 read: IOPS=2, BW=2295KiB/s (2350kB/s)(6144KiB/2677msec) clat (usec): min=492, max=240524, avg=101318.89, stdev=105135.94 lat (usec): min=493, max=240525, avg=101320.21, stdev=105135.81 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[ 685], | 30.00th=[ 685], 40.00th=[ 49546], 50.00th=[ 49546], 60.00th=[102237], | 70.00th=[214959], 80.00th=[214959], 90.00th=[240124], 95.00th=[240124], | 99.00th=[240124], 99.50th=[240124], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 4055, max= 4087, per=74.86%, avg=4071.00, stdev=22.63, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2295KiB/s (2350kB/s)(6144KiB/2677msec); 0 zone resets clat (msec): min=160, max=796, avg=334.11, stdev=231.67 lat (msec): min=161, max=797, avg=334.24, stdev=231.63 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 284], | 70.00th=[ 296], 80.00th=[ 296], 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= 2027, max= 2976, per=30.85%, avg=2348.67, stdev=543.35, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 50=8.33%, 250=50.00%, 500=16.67%, 1000=8.33% cpu : usr=0.04%, sys=14.39%, ctx=177, 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=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=146057: Mon Jun 1 15:03:49 2026 read: IOPS=1, BW=1581KiB/s (1619kB/s)(5120KiB/3238msec) clat (usec): min=1529, max=380660, avg=219230.40, stdev=149815.02 lat (usec): min=1530, max=380662, avg=219231.67, stdev=149814.95 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1532], 10.00th=[ 1532], 20.00th=[ 1532], | 30.00th=[152044], 40.00th=[152044], 50.00th=[233833], 60.00th=[233833], | 70.00th=[329253], 80.00th=[329253], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 2027, max= 4055, per=49.80%, avg=2708.33, stdev=1166.27, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2214KiB/s (2267kB/s)(7168KiB/3238msec); 0 zone resets clat (msec): min=121, max=577, avg=296.77, stdev=175.43 lat (msec): min=121, max=577, avg=297.06, stdev=175.40 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 153], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 275], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 489], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1414, max= 4087, per=33.03%, avg=2514.67, stdev=1397.53, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=16.13%, ctx=184, 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=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=5438KiB/s (5569kB/s), 544KiB/s-2541KiB/s (557kB/s-2602kB/s), io=20.0MiB (20.0MB), run=2677-3766msec WRITE: bw=7613KiB/s (7796kB/s), 1815KiB/s-2719KiB/s (1859kB/s-2784kB/s), io=28.0MiB (29.4MB), run=2677-3766msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146059: Mon Jun 1 15:03:50 2026 read: IOPS=1, BW=1543KiB/s (1580kB/s)(7168KiB/4647msec) clat (msec): min=115, max=1180, avg=421.92, stdev=378.62 lat (msec): min=115, max=1180, avg=421.93, stdev=378.61 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 127], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 426], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 550], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1535, max= 2048, per=43.69%, avg=1925.33, stdev=195.02, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 write: IOPS=1, BW=1102KiB/s (1128kB/s)(5120KiB/4647msec); 0 zone resets clat (msec): min=183, max=606, avg=328.64, stdev=170.17 lat (msec): min=183, max=606, avg=328.74, stdev=170.16 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 296], 60.00th=[ 296], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 2011, max= 4096, per=43.90%, avg=2708.67, stdev=1201.47, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=2.86%, ctx=68, 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=146060: Mon Jun 1 15:03:50 2026 read: IOPS=0, BW=466KiB/s (477kB/s)(2048KiB/4392msec) clat (usec): min=67597, max=93295, avg=80446.38, stdev=18171.01 lat (usec): min=67598, max=93298, avg=80448.47, stdev=18172.13 clat percentiles (usec): | 1.00th=[67634], 5.00th=[67634], 10.00th=[67634], 20.00th=[67634], | 30.00th=[67634], 40.00th=[67634], 50.00th=[67634], 60.00th=[92799], | 70.00th=[92799], 80.00th=[92799], 90.00th=[92799], 95.00th=[92799], | 99.00th=[92799], 99.50th=[92799], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 1577, max= 2015, per=40.75%, avg=1796.00, stdev=309.71, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2332KiB/s (2387kB/s)(10.0MiB/4392msec); 0 zone resets clat (msec): min=190, max=1374, avg=421.39, stdev=353.73 lat (msec): min=190, max=1374, avg=421.96, stdev=353.97 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 222], | 30.00th=[ 226], 40.00th=[ 241], 50.00th=[ 309], 60.00th=[ 317], | 70.00th=[ 376], 80.00th=[ 384], 90.00th=[ 584], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 2015, max= 4096, per=57.06%, avg=3520.80, stdev=881.50, samples=5 iops : min= 1, max= 4, avg= 2.80, stdev= 1.10, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=5.72%, ctx=125, 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=146061: Mon Jun 1 15:03:50 2026 read: IOPS=1, BW=1479KiB/s (1515kB/s)(6144KiB/4154msec) clat (msec): min=91, max=535, avg=187.27, stdev=172.28 lat (msec): min=91, max=535, avg=187.27, stdev=172.28 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 97], | 30.00th=[ 97], 40.00th=[ 110], 50.00th=[ 110], 60.00th=[ 142], | 70.00th=[ 148], 80.00th=[ 148], 90.00th=[ 535], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 2015, max= 6035, per=76.16%, avg=3356.33, stdev=2319.79, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1479KiB/s (1515kB/s)(6144KiB/4154msec); 0 zone resets clat (msec): min=170, max=1591, avg=491.54, stdev=548.20 lat (msec): min=170, max=1592, avg=491.69, stdev=548.35 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 275], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 1458, max= 2019, per=29.91%, avg=1845.20, stdev=250.69, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.05%, sys=4.17%, ctx=65, 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=146062: Mon Jun 1 15:03:50 2026 read: IOPS=1, BW=1106KiB/s (1132kB/s)(5120KiB/4630msec) clat (msec): min=61, max=198, avg=119.80, stdev=49.52 lat (msec): min=61, max=198, avg=119.80, stdev=49.52 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 62], | 30.00th=[ 110], 40.00th=[ 110], 50.00th=[ 114], 60.00th=[ 114], | 70.00th=[ 115], 80.00th=[ 115], 90.00th=[ 199], 95.00th=[ 199], | 99.00th=[ 199], 99.50th=[ 199], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1548KiB/s (1585kB/s)(7168KiB/4630msec); 0 zone resets clat (msec): min=115, max=1756, avg=572.05, stdev=560.61 lat (msec): min=115, max=1756, avg=572.18, stdev=560.58 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 205], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 493], 60.00th=[ 510], | 70.00th=[ 510], 80.00th=[ 693], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 1544, max= 2048, per=30.98%, avg=1911.60, stdev=209.99, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=2.85%, ctx=68, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4407KiB/s (4513kB/s), 466KiB/s-1543KiB/s (477kB/s-1580kB/s), io=20.0MiB (20.0MB), run=4154-4647msec WRITE: bw=6170KiB/s (6318kB/s), 1102KiB/s-2332KiB/s (1128kB/s-2387kB/s), io=28.0MiB (29.4MB), run=4154-4647msec 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=146074: Mon Jun 1 15:04:05 2026 read: IOPS=1, BW=4428KiB/s (4534kB/s)(12.0MiB/2775msec) clat (msec): min=512, max=1320, avg=880.16, stdev=408.85 lat (msec): min=512, max=1320, avg=880.16, stdev=408.85 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8078, max= 8143, per=100.00%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.79%, ctx=47, 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=146075: Mon Jun 1 15:04:05 2026 read: IOPS=0, BW=1234KiB/s (1263kB/s)(4096KiB/3320msec) clat (nsec): min=2204.6M, max=2204.6M, avg=2204604481.00, stdev= 0.00 lat (nsec): min=2204.6M, max=2204.6M, avg=2204606871.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2198], 5.00th=[ 2198], 10.00th=[ 2198], 20.00th=[ 2198], | 30.00th=[ 2198], 40.00th=[ 2198], 50.00th=[ 2198], 60.00th=[ 2198], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2467KiB/s (2527kB/s)(8192KiB/3320msec); 0 zone resets clat (msec): min=296, max=562, avg=429.28, stdev=188.14 lat (msec): min=296, max=562, avg=429.65, stdev=188.16 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 8175, max= 8175, per=84.16%, avg=8175.00, 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%, >=2000=33.33% cpu : usr=0.00%, sys=4.01%, ctx=64, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146076: Mon Jun 1 15:04:05 2026 write: IOPS=0, BW=3643KiB/s (3730kB/s)(12.0MiB/3373msec); 0 zone resets clat (msec): min=588, max=1774, avg=1046.83, stdev=637.38 lat (msec): min=588, max=1779, avg=1050.73, stdev=638.48 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8078, max= 8192, per=83.75%, avg=8135.00, stdev=80.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.57%, ctx=83, 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=146077: Mon Jun 1 15:04:05 2026 write: IOPS=0, BW=3768KiB/s (3859kB/s)(12.0MiB/3261msec); 0 zone resets clat (msec): min=277, max=2419, avg=1037.18, stdev=1199.06 lat (msec): min=277, max=2420, avg=1037.68, stdev=1199.20 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 6272, max= 8159, per=74.28%, avg=7215.50, stdev=1334.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.09%, sys=2.33%, ctx=48, 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=4935KiB/s (5053kB/s), 1234KiB/s-4428KiB/s (1263kB/s-4534kB/s), io=16.0MiB (16.8MB), run=2775-3320msec WRITE: bw=9715KiB/s (9948kB/s), 2467KiB/s-3768KiB/s (2527kB/s-3859kB/s), io=32.0MiB (33.6MB), run=3261-3373msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146069: Mon Jun 1 15:04:06 2026 read: IOPS=1, BW=4178KiB/s (4278kB/s)(12.0MiB/2941msec) clat (msec): min=858, max=1133, avg=961.31, stdev=149.70 lat (msec): min=858, max=1133, avg=961.31, stdev=149.70 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8031, max= 8175, per=100.00%, avg=8103.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=12.96%, ctx=354, 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=146070: Mon Jun 1 15:04:06 2026 read: IOPS=0, BW=1242KiB/s (1271kB/s)(4096KiB/3299msec) clat (nsec): min=1321.9M, max=1321.9M, avg=1321901082.00, stdev= 0.00 lat (nsec): min=1321.9M, max=1321.9M, avg=1321903600.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1318], 5.00th=[ 1318], 10.00th=[ 1318], 20.00th=[ 1318], | 30.00th=[ 1318], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2483KiB/s (2543kB/s)(8192KiB/3299msec); 0 zone resets clat (msec): min=813, max=974, avg=893.98, stdev=113.71 lat (msec): min=813, max=974, avg=894.38, stdev=113.84 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 978], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.09%, sys=4.76%, ctx=126, 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=146071: Mon Jun 1 15:04:06 2026 write: IOPS=0, BW=2839KiB/s (2907kB/s)(12.0MiB/4328msec); 0 zone resets clat (msec): min=219, max=3677, avg=1399.91, stdev=1972.94 lat (msec): min=220, max=3677, avg=1400.63, stdev=1972.52 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 3675], 80.00th=[ 3675], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.73%, ctx=55, 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=146072: Mon Jun 1 15:04:06 2026 write: IOPS=0, BW=3676KiB/s (3764kB/s)(12.0MiB/3343msec); 0 zone resets clat (msec): min=441, max=2395, avg=1098.85, stdev=1122.68 lat (msec): min=442, max=2395, avg=1099.24, stdev=1122.67 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 2400], 80.00th=[ 2400], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 5953, max= 8175, per=93.30%, avg=7064.00, stdev=1571.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.93%, ctx=48, 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=4966KiB/s (5086kB/s), 1242KiB/s-4178KiB/s (1271kB/s-4278kB/s), io=16.0MiB (16.8MB), run=2941-3299msec WRITE: bw=7571KiB/s (7753kB/s), 2483KiB/s-3676KiB/s (2543kB/s-3764kB/s), io=32.0MiB (33.6MB), run=3299-4328msec