== sanity test 398b: DIO and buffer IO race ============== 08:00:13 (1787400013) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.99077 s, 7.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=144840: Sat Aug 22 08:02:56 2026 read: IOPS=10, BW=42.7KiB/s (43.7kB/s)(5992KiB/140364msec) clat (usec): min=39, max=1056.5k, avg=45947.47, stdev=40531.67 lat (usec): min=40, max=1056.5k, avg=45950.69, stdev=40531.43 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 78], 10.00th=[ 13435], | 20.00th=[ 23987], 30.00th=[ 29492], 40.00th=[ 34341], | 50.00th=[ 41157], 60.00th=[ 47449], 70.00th=[ 55313], | 80.00th=[ 65274], 90.00th=[ 82314], 95.00th=[ 96994], | 99.00th=[ 145753], 99.50th=[ 204473], 99.90th=[ 346031], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 7, max= 88, per=25.29%, avg=42.49, stdev=17.27, samples=275 iops : min= 1, max= 22, avg= 9.95, stdev= 4.34, samples=275 write: IOPS=11, BW=44.9KiB/s (45.9kB/s)(6296KiB/140364msec); 0 zone resets clat (usec): min=1154, max=524189, avg=45055.83, stdev=42901.18 lat (usec): min=1155, max=524191, avg=45065.75, stdev=42898.32 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 2147], 10.00th=[ 3818], 20.00th=[ 7177], | 30.00th=[ 13042], 40.00th=[ 23987], 50.00th=[ 35390], 60.00th=[ 46400], | 70.00th=[ 58983], 80.00th=[ 76022], 90.00th=[101188], 95.00th=[123208], | 99.00th=[185598], 99.50th=[214959], 99.90th=[265290], 99.95th=[522191], | 99.99th=[522191] bw ( KiB/s): min= 7, max= 103, per=25.45%, avg=44.79, stdev=18.32, samples=274 iops : min= 1, max= 25, avg=10.53, stdev= 4.61, samples=274 lat (usec) : 50=0.20%, 100=3.16%, 250=0.78%, 500=0.10%, 750=0.07% lat (msec) : 2=2.44%, 4=3.12%, 10=7.94%, 20=7.94%, 50=37.76% lat (msec) : 100=29.07%, 250=7.19%, 500=0.16%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.65%, ctx=7149, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144841: Sat Aug 22 08:02:56 2026 read: IOPS=10, BW=42.0KiB/s (43.0kB/s)(5940KiB/141348msec) clat (usec): min=36, max=505706, avg=46816.09, stdev=32210.17 lat (usec): min=36, max=505707, avg=46822.73, stdev=32210.57 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 89], 10.00th=[ 16319], 20.00th=[ 24511], | 30.00th=[ 30278], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 48497], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 83362], 95.00th=[ 95945], | 99.00th=[149947], 99.50th=[164627], 99.90th=[246416], 99.95th=[505414], | 99.99th=[505414] bw ( KiB/s): min= 5, max= 87, per=24.90%, avg=41.83, stdev=17.76, samples=277 iops : min= 1, max= 21, avg= 9.78, stdev= 4.46, samples=277 write: IOPS=11, BW=44.9KiB/s (45.0kB/s)(6348KiB/141348msec); 0 zone resets clat (usec): min=1241, max=1026.5k, avg=44871.89, stdev=50441.88 lat (usec): min=1242, max=1026.5k, avg=44879.92, stdev=50440.47 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1991], 10.00th=[ 3621], | 20.00th=[ 6980], 30.00th=[ 11863], 40.00th=[ 23462], | 50.00th=[ 33817], 60.00th=[ 44303], 70.00th=[ 57934], | 80.00th=[ 73925], 90.00th=[ 100140], 95.00th=[ 123208], | 99.00th=[ 196084], 99.50th=[ 256902], 99.90th=[ 413139], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 7, max= 111, per=25.40%, avg=44.70, stdev=19.37, samples=277 iops : min= 1, max= 27, avg=10.51, stdev= 4.87, samples=277 lat (usec) : 50=0.03%, 100=2.80%, 250=0.72%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=2.64%, 4=3.32%, 10=8.24%, 20=7.71%, 50=37.17% lat (msec) : 100=29.98%, 250=6.97%, 500=0.23%, 750=0.03%, 2000=0.03% cpu : usr=0.10%, sys=5.66%, ctx=7321, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144842: Sat Aug 22 08:02:56 2026 read: IOPS=10, BW=42.3KiB/s (43.3kB/s)(6028KiB/142429msec) clat (usec): min=27, max=1030.5k, avg=47126.59, stdev=40374.69 lat (usec): min=27, max=1030.5k, avg=47132.21, stdev=40373.84 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 98], 10.00th=[ 15533], | 20.00th=[ 24249], 30.00th=[ 28967], 40.00th=[ 35390], | 50.00th=[ 40633], 60.00th=[ 46924], 70.00th=[ 55837], | 80.00th=[ 66323], 90.00th=[ 84411], 95.00th=[ 103285], | 99.00th=[ 149947], 99.50th=[ 170918], 99.90th=[ 291505], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 5, max= 125, per=25.24%, avg=42.41, stdev=19.78, samples=277 iops : min= 1, max= 31, avg= 9.93, stdev= 4.98, samples=277 write: IOPS=10, BW=43.0KiB/s (45.0kB/s)(6260KiB/142429msec); 0 zone resets clat (usec): min=1246, max=391955, avg=45270.04, stdev=44481.69 lat (usec): min=1247, max=391956, avg=45275.49, stdev=44480.46 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 2073], 10.00th=[ 3556], 20.00th=[ 7111], | 30.00th=[ 12780], 40.00th=[ 25035], 50.00th=[ 35914], 60.00th=[ 45876], | 70.00th=[ 57934], 80.00th=[ 74974], 90.00th=[100140], 95.00th=[124257], | 99.00th=[198181], 99.50th=[256902], 99.90th=[379585], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 7, max= 134, per=24.84%, avg=43.72, stdev=18.12, samples=279 iops : min= 1, max= 33, avg=10.25, stdev= 4.55, samples=279 lat (usec) : 50=0.16%, 100=2.31%, 250=0.62%, 500=0.20%, 750=0.13% lat (usec) : 1000=0.10% lat (msec) : 2=2.54%, 4=3.35%, 10=7.71%, 20=7.81%, 50=38.74% lat (msec) : 100=28.55%, 250=7.42%, 500=0.33%, 2000=0.03% cpu : usr=0.09%, sys=5.69%, ctx=7175, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144844: Sat Aug 22 08:02:56 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(6052KiB/139841msec) clat (usec): min=35, max=1033.6k, avg=45785.33, stdev=38687.20 lat (usec): min=35, max=1033.6k, avg=45789.90, stdev=38686.19 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 82], 10.00th=[ 14877], | 20.00th=[ 23987], 30.00th=[ 29754], 40.00th=[ 35390], | 50.00th=[ 40633], 60.00th=[ 46400], 70.00th=[ 54264], | 80.00th=[ 64750], 90.00th=[ 80217], 95.00th=[ 94897], | 99.00th=[ 139461], 99.50th=[ 181404], 99.90th=[ 250610], | 99.95th=[1035994], 99.99th=[1035994] bw ( KiB/s): min= 7, max= 103, per=25.65%, avg=43.10, stdev=18.41, samples=274 iops : min= 1, max= 25, avg=10.09, stdev= 4.61, samples=274 write: IOPS=11, BW=44.6KiB/s (45.7kB/s)(6236KiB/139841msec); 0 zone resets clat (usec): min=1321, max=353034, avg=44849.80, stdev=42508.25 lat (usec): min=1323, max=353036, avg=44863.79, stdev=42511.34 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2507], 10.00th=[ 3916], 20.00th=[ 6915], | 30.00th=[ 12256], 40.00th=[ 23462], 50.00th=[ 35914], 60.00th=[ 45876], | 70.00th=[ 60031], 80.00th=[ 76022], 90.00th=[100140], 95.00th=[124257], | 99.00th=[185598], 99.50th=[217056], 99.90th=[333448], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 7, max= 118, per=25.13%, avg=44.23, stdev=19.02, samples=275 iops : min= 1, max= 29, avg=10.39, stdev= 4.77, samples=275 lat (usec) : 50=0.10%, 100=2.83%, 250=0.75%, 500=0.10%, 750=0.07% lat (msec) : 2=1.95%, 4=3.39%, 10=7.94%, 20=8.53%, 50=38.48% lat (msec) : 100=28.74%, 250=6.97%, 500=0.13%, 2000=0.03% cpu : usr=0.10%, sys=5.63%, ctx=7235, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=169KiB/s (173kB/s), 42.0KiB/s-43.3KiB/s (43.0kB/s-44.3kB/s), io=23.4MiB (24.6MB), run=139841-142429msec WRITE: bw=177KiB/s (181kB/s), 43.0KiB/s-44.9KiB/s (45.0kB/s-45.0kB/s), io=24.6MiB (25.7MB), run=139841-142429msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144845: Sat Aug 22 08:05:25 2026 read: IOPS=5, BW=20.7KiB/s (21.2kB/s)(5992KiB/289982msec) clat (msec): min=6, max=1091, avg=47.82, stdev=50.23 lat (msec): min=6, max=1091, avg=47.83, stdev=50.23 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 60], 90.00th=[ 86], 95.00th=[ 117], | 99.00th=[ 243], 99.50th=[ 309], 99.90th=[ 481], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 87, per=28.18%, avg=23.11, stdev=14.78, samples=499 iops : min= 1, max= 21, avg= 5.12, stdev= 3.73, samples=499 write: IOPS=5, BW=21.7KiB/s (22.2kB/s)(6296KiB/289982msec); 0 zone resets clat (msec): min=35, max=582, avg=138.43, stdev=64.31 lat (msec): min=35, max=582, avg=138.43, stdev=64.31 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 66], 10.00th=[ 74], 20.00th=[ 85], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 123], 60.00th=[ 138], | 70.00th=[ 159], 80.00th=[ 188], 90.00th=[ 230], 95.00th=[ 262], | 99.00th=[ 347], 99.50th=[ 376], 99.90th=[ 531], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 48, per=24.92%, avg=21.43, stdev= 9.57, samples=563 iops : min= 1, max= 12, avg= 4.69, stdev= 2.45, samples=563 lat (msec) : 10=0.72%, 20=6.48%, 50=27.70%, 100=27.47%, 250=33.85% lat (msec) : 500=3.65%, 750=0.10%, 2000=0.03% cpu : usr=0.06%, sys=1.67%, ctx=6030, 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=144846: Sat Aug 22 08:05:25 2026 read: IOPS=5, BW=20.5KiB/s (20.9kB/s)(5940KiB/290415msec) clat (msec): min=7, max=1009, avg=46.80, stdev=47.04 lat (msec): min=7, max=1009, avg=46.80, stdev=47.04 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 48], 80.00th=[ 61], 90.00th=[ 84], 95.00th=[ 111], | 99.00th=[ 207], 99.50th=[ 284], 99.90th=[ 477], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 79, per=28.89%, avg=23.69, stdev=14.35, samples=483 iops : min= 1, max= 19, avg= 5.26, stdev= 3.63, samples=483 write: IOPS=5, BW=21.9KiB/s (22.4kB/s)(6348KiB/290415msec); 0 zone resets clat (msec): min=40, max=576, avg=138.83, stdev=66.72 lat (msec): min=40, max=576, avg=138.84, stdev=66.72 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 84], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 123], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 188], 90.00th=[ 224], 95.00th=[ 268], | 99.00th=[ 363], 99.50th=[ 388], 99.90th=[ 523], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 48, per=25.20%, avg=21.67, stdev= 9.90, samples=562 iops : min= 1, max= 12, avg= 4.75, stdev= 2.52, samples=562 lat (msec) : 10=0.81%, 20=6.38%, 50=28.29%, 100=26.46%, 250=34.57% lat (msec) : 500=3.35%, 750=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.66%, ctx=6157, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144847: Sat Aug 22 08:05:25 2026 read: IOPS=5, BW=20.7KiB/s (21.2kB/s)(6028KiB/291654msec) clat (msec): min=7, max=380, avg=48.85, stdev=41.00 lat (msec): min=7, max=380, avg=48.85, stdev=41.00 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 51], 80.00th=[ 64], 90.00th=[ 88], 95.00th=[ 122], | 99.00th=[ 241], 99.50th=[ 284], 99.90th=[ 338], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 7, max= 71, per=27.25%, avg=22.34, stdev=14.00, samples=518 iops : min= 1, max= 17, avg= 4.92, stdev= 3.53, samples=518 write: IOPS=5, BW=21.5KiB/s (21.0kB/s)(6260KiB/291654msec); 0 zone resets clat (msec): min=38, max=1196, avg=139.00, stdev=70.37 lat (msec): min=38, max=1196, avg=139.01, stdev=70.37 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 73], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 124], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 182], 90.00th=[ 226], 95.00th=[ 266], | 99.00th=[ 359], 99.50th=[ 414], 99.90th=[ 542], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 55, per=24.60%, avg=21.16, stdev= 9.92, samples=566 iops : min= 1, max= 13, avg= 4.62, stdev= 2.52, samples=566 lat (msec) : 10=0.26%, 20=5.70%, 50=28.78%, 100=26.89%, 250=34.51% lat (msec) : 500=3.81%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.64%, ctx=6038, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144848: Sat Aug 22 08:05:25 2026 read: IOPS=5, BW=20.8KiB/s (21.3kB/s)(6052KiB/290334msec) clat (msec): min=7, max=345, avg=46.79, stdev=37.58 lat (msec): min=7, max=345, avg=46.80, stdev=37.58 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 50], 80.00th=[ 61], 90.00th=[ 87], 95.00th=[ 113], | 99.00th=[ 213], 99.50th=[ 266], 99.90th=[ 326], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 87, per=28.30%, avg=23.21, stdev=14.83, samples=502 iops : min= 1, max= 21, avg= 5.14, stdev= 3.75, samples=502 write: IOPS=5, BW=21.5KiB/s (21.0kB/s)(6236KiB/290334msec); 0 zone resets clat (msec): min=41, max=1176, avg=140.51, stdev=72.64 lat (msec): min=41, max=1176, avg=140.51, stdev=72.64 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 123], 60.00th=[ 140], | 70.00th=[ 163], 80.00th=[ 184], 90.00th=[ 232], 95.00th=[ 271], | 99.00th=[ 372], 99.50th=[ 422], 99.90th=[ 609], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 55, per=24.51%, avg=21.08, stdev= 9.75, samples=567 iops : min= 1, max= 13, avg= 4.60, stdev= 2.47, samples=567 lat (msec) : 10=0.39%, 20=6.87%, 50=28.22%, 100=26.43%, 250=33.89% lat (msec) : 500=4.07%, 750=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.64%, ctx=6070, 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=82.3KiB/s (84.3kB/s), 20.5KiB/s-20.8KiB/s (20.9kB/s-21.3kB/s), io=23.4MiB (24.6MB), run=289982-291654msec WRITE: bw=86.2KiB/s (88.3kB/s), 21.5KiB/s-21.9KiB/s (21.0kB/s-22.4kB/s), io=24.6MiB (25.7MB), run=289982-291654msec 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=144924: Sat Aug 22 08:06:08 2026 read: IOPS=11, BW=184KiB/s (189kB/s)(5920KiB/32113msec) clat (usec): min=40, max=433614, avg=46267.53, stdev=38765.61 lat (usec): min=40, max=433616, avg=46269.18, stdev=38765.72 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 69], 10.00th=[ 100], 20.00th=[ 21890], | 30.00th=[ 28705], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 48497], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[108528], | 99.00th=[152044], 99.50th=[233833], 99.90th=[434111], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 30, max= 477, per=24.83%, avg=184.24, stdev=78.09, samples=63 iops : min= 1, max= 29, avg=10.68, stdev= 4.90, samples=63 write: IOPS=12, BW=198KiB/s (203kB/s)(6368KiB/32113msec); 0 zone resets clat (usec): min=1621, max=295378, avg=37084.05, stdev=40237.17 lat (usec): min=1623, max=295382, avg=37090.18, stdev=40235.98 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 16], 50.00th=[ 25], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 64], 90.00th=[ 84], 95.00th=[ 109], | 99.00th=[ 215], 99.50th=[ 236], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 55, max= 382, per=25.36%, avg=198.10, stdev=81.30, samples=63 iops : min= 3, max= 23, avg=11.56, stdev= 5.11, samples=63 lat (usec) : 50=0.52%, 100=4.17%, 250=1.43%, 500=0.26%, 750=0.26% lat (msec) : 2=0.39%, 4=3.26%, 10=12.76%, 20=9.64%, 50=35.68% lat (msec) : 100=25.13%, 250=6.25%, 500=0.26% cpu : usr=0.11%, sys=7.28%, ctx=1797, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144925: Sat Aug 22 08:06:08 2026 read: IOPS=11, BW=178KiB/s (182kB/s)(5744KiB/32239msec) clat (usec): min=52, max=193705, avg=49170.58, stdev=34648.04 lat (usec): min=52, max=193705, avg=49174.40, stdev=34647.36 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 84], 10.00th=[ 153], 20.00th=[ 24511], | 30.00th=[ 32375], 40.00th=[ 38011], 50.00th=[ 43779], 60.00th=[ 51643], | 70.00th=[ 59507], 80.00th=[ 69731], 90.00th=[ 87557], 95.00th=[111674], | 99.00th=[181404], 99.50th=[191890], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 27, max= 287, per=23.91%, avg=177.38, stdev=59.30, samples=63 iops : min= 1, max= 17, avg=10.25, stdev= 3.69, samples=63 write: IOPS=12, BW=203KiB/s (208kB/s)(6544KiB/32239msec); 0 zone resets clat (usec): min=1428, max=245677, avg=35414.26, stdev=34949.05 lat (usec): min=1430, max=245680, avg=35428.72, stdev=34959.48 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2933], 10.00th=[ 4359], 20.00th=[ 7767], | 30.00th=[ 10945], 40.00th=[ 15401], 50.00th=[ 22938], 60.00th=[ 33817], | 70.00th=[ 47449], 80.00th=[ 62129], 90.00th=[ 76022], 95.00th=[101188], | 99.00th=[162530], 99.50th=[164627], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 31, max= 477, per=25.86%, avg=201.98, stdev=96.17, samples=63 iops : min= 1, max= 29, avg=11.81, stdev= 6.03, samples=63 lat (usec) : 100=3.65%, 250=1.43%, 500=0.13% lat (msec) : 2=1.30%, 4=3.39%, 10=10.03%, 20=11.46%, 50=33.85% lat (msec) : 100=28.65%, 250=6.12% cpu : usr=0.09%, sys=6.99%, ctx=1752, 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=144926: Sat Aug 22 08:06:08 2026 read: IOPS=12, BW=195KiB/s (200kB/s)(6256KiB/32077msec) clat (usec): min=42, max=262515, avg=44995.06, stdev=37101.74 lat (usec): min=43, max=262516, avg=45002.76, stdev=37104.21 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 73], 10.00th=[ 93], 20.00th=[ 20317], | 30.00th=[ 28705], 40.00th=[ 32900], 50.00th=[ 41157], 60.00th=[ 46924], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 81265], 95.00th=[106431], | 99.00th=[181404], 99.50th=[252707], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 62, max= 669, per=26.86%, avg=199.27, stdev=96.52, samples=62 iops : min= 3, max= 41, avg=11.63, stdev= 6.06, samples=62 write: IOPS=11, BW=188KiB/s (193kB/s)(6032KiB/32077msec); 0 zone resets clat (usec): min=1674, max=323751, avg=37554.22, stdev=36152.71 lat (usec): min=1675, max=323755, avg=37571.32, stdev=36153.87 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 20], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 84], 95.00th=[ 105], | 99.00th=[ 148], 99.50th=[ 197], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 446, per=24.33%, avg=190.02, stdev=72.62, samples=62 iops : min= 1, max= 27, avg=11.05, stdev= 4.53, samples=62 lat (usec) : 50=0.26%, 100=5.47%, 250=2.08%, 500=0.26%, 750=0.26% lat (msec) : 2=0.65%, 4=2.73%, 10=9.90%, 20=8.85%, 50=37.24% lat (msec) : 100=26.95%, 250=4.95%, 500=0.39% cpu : usr=0.12%, sys=6.87%, ctx=1836, 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=144927: Sat Aug 22 08:06:08 2026 read: IOPS=12, BW=195KiB/s (199kB/s)(6032KiB/30980msec) clat (usec): min=45, max=432954, avg=45946.51, stdev=40456.24 lat (usec): min=45, max=432955, avg=45960.05, stdev=40444.11 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 73], 10.00th=[ 91], 20.00th=[ 20579], | 30.00th=[ 29754], 40.00th=[ 36439], 50.00th=[ 42206], 60.00th=[ 47449], | 70.00th=[ 54789], 80.00th=[ 64750], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[189793], 99.50th=[248513], 99.90th=[434111], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 27, max= 381, per=26.25%, avg=194.77, stdev=86.19, samples=61 iops : min= 1, max= 23, avg=11.34, stdev= 5.42, samples=61 write: IOPS=12, BW=202KiB/s (207kB/s)(6256KiB/30980msec); 0 zone resets clat (usec): min=1888, max=326454, avg=34211.59, stdev=38700.95 lat (usec): min=1888, max=326455, avg=34218.45, stdev=38701.03 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 32], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 81], 95.00th=[ 95], | 99.00th=[ 176], 99.50th=[ 271], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 445, per=25.91%, avg=202.33, stdev=89.11, samples=61 iops : min= 1, max= 27, avg=11.82, stdev= 5.59, samples=61 lat (usec) : 50=0.52%, 100=5.34%, 250=1.56%, 500=0.26%, 750=0.13% lat (msec) : 2=0.52%, 4=4.69%, 10=11.46%, 20=11.33%, 50=34.24% lat (msec) : 100=24.61%, 250=4.95%, 500=0.39% cpu : usr=0.07%, sys=6.93%, ctx=1672, 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=743KiB/s (761kB/s), 178KiB/s-195KiB/s (182kB/s-200kB/s), io=23.4MiB (24.5MB), run=30980-32239msec WRITE: bw=782KiB/s (800kB/s), 188KiB/s-203KiB/s (193kB/s-208kB/s), io=24.6MiB (25.8MB), run=30980-32239msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144919: Sat Aug 22 08:06:52 2026 read: IOPS=4, BW=78.6KiB/s (80.5kB/s)(5920KiB/75329msec) clat (msec): min=8, max=391, avg=46.63, stdev=44.65 lat (msec): min=8, max=391, avg=46.64, stdev=44.65 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 58], 90.00th=[ 102], 95.00th=[ 130], | 99.00th=[ 220], 99.50th=[ 321], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 30, max= 285, per=27.41%, avg=86.35, stdev=52.40, samples=135 iops : min= 1, max= 17, avg= 4.57, stdev= 3.31, samples=135 write: IOPS=5, BW=84.5KiB/s (86.6kB/s)(6368KiB/75329msec); 0 zone resets clat (msec): min=47, max=511, avg=145.51, stdev=60.75 lat (msec): min=47, max=511, avg=145.53, stdev=60.74 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 78], 10.00th=[ 88], 20.00th=[ 101], | 30.00th=[ 112], 40.00th=[ 123], 50.00th=[ 133], 60.00th=[ 144], | 70.00th=[ 159], 80.00th=[ 180], 90.00th=[ 220], 95.00th=[ 259], | 99.00th=[ 347], 99.50th=[ 464], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 30, max= 190, per=26.10%, avg=86.41, stdev=34.87, samples=145 iops : min= 1, max= 11, avg= 4.57, stdev= 2.21, samples=145 lat (msec) : 10=0.26%, 20=9.11%, 50=26.82%, 100=17.45%, 250=42.84% lat (msec) : 500=3.39%, 750=0.13% cpu : usr=0.06%, sys=1.70%, ctx=1426, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144921: Sat Aug 22 08:06:52 2026 read: IOPS=4, BW=75.6KiB/s (77.4kB/s)(5744KiB/76009msec) clat (msec): min=8, max=295, avg=44.95, stdev=43.49 lat (msec): min=8, max=295, avg=44.96, stdev=43.49 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 91], 95.00th=[ 144], | 99.00th=[ 239], 99.50th=[ 247], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 30, max= 380, per=28.22%, avg=88.88, stdev=56.27, samples=126 iops : min= 1, max= 23, avg= 4.71, stdev= 3.55, samples=126 write: IOPS=5, BW=86.1KiB/s (88.2kB/s)(6544KiB/76009msec); 0 zone resets clat (msec): min=46, max=464, avg=146.09, stdev=60.28 lat (msec): min=46, max=464, avg=146.09, stdev=60.28 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 72], 10.00th=[ 84], 20.00th=[ 97], | 30.00th=[ 111], 40.00th=[ 123], 50.00th=[ 133], 60.00th=[ 148], | 70.00th=[ 165], 80.00th=[ 188], 90.00th=[ 226], 95.00th=[ 268], | 99.00th=[ 313], 99.50th=[ 397], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 30, max= 191, per=26.52%, avg=87.77, stdev=33.82, samples=146 iops : min= 1, max= 11, avg= 4.65, stdev= 2.15, samples=146 lat (msec) : 10=0.39%, 20=9.64%, 50=25.26%, 100=19.27%, 250=41.80% lat (msec) : 500=3.65% cpu : usr=0.06%, sys=1.76%, ctx=1459, 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=144922: Sat Aug 22 08:06:52 2026 read: IOPS=5, BW=86.3KiB/s (88.4kB/s)(6256KiB/72489msec) clat (msec): min=7, max=417, avg=43.64, stdev=41.50 lat (msec): min=7, max=417, avg=43.64, stdev=41.50 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 58], 90.00th=[ 83], 95.00th=[ 111], | 99.00th=[ 220], 99.50th=[ 313], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 30, max= 285, per=29.90%, avg=94.19, stdev=63.91, samples=131 iops : min= 1, max= 17, avg= 5.05, stdev= 4.01, samples=131 write: IOPS=5, BW=83.2KiB/s (85.2kB/s)(6032KiB/72489msec); 0 zone resets clat (msec): min=54, max=445, avg=146.64, stdev=62.79 lat (msec): min=54, max=445, avg=146.67, stdev=62.82 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 72], 10.00th=[ 84], 20.00th=[ 100], | 30.00th=[ 111], 40.00th=[ 123], 50.00th=[ 132], 60.00th=[ 146], | 70.00th=[ 161], 80.00th=[ 186], 90.00th=[ 228], 95.00th=[ 279], | 99.00th=[ 342], 99.50th=[ 435], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 30, max= 160, per=25.39%, avg=84.04, stdev=33.27, samples=140 iops : min= 1, max= 10, avg= 4.41, stdev= 2.14, samples=140 lat (msec) : 10=0.78%, 20=9.90%, 50=27.86%, 100=19.27%, 250=38.41% lat (msec) : 500=3.78% cpu : usr=0.04%, sys=1.78%, ctx=1437, 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=144923: Sat Aug 22 08:06:52 2026 read: IOPS=5, BW=81.4KiB/s (83.4kB/s)(6032KiB/74087msec) clat (msec): min=9, max=244, avg=44.22, stdev=35.84 lat (msec): min=9, max=244, avg=44.23, stdev=35.85 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 60], 90.00th=[ 90], 95.00th=[ 118], | 99.00th=[ 213], 99.50th=[ 241], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 31, max= 349, per=28.82%, avg=90.78, stdev=57.05, samples=129 iops : min= 1, max= 21, avg= 4.84, stdev= 3.60, samples=129 write: IOPS=5, BW=84.4KiB/s (86.5kB/s)(6256KiB/74087msec); 0 zone resets clat (msec): min=48, max=521, avg=146.62, stdev=59.62 lat (msec): min=48, max=521, avg=146.63, stdev=59.63 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 74], 10.00th=[ 88], 20.00th=[ 104], | 30.00th=[ 112], 40.00th=[ 124], 50.00th=[ 134], 60.00th=[ 144], | 70.00th=[ 159], 80.00th=[ 190], 90.00th=[ 228], 95.00th=[ 249], | 99.00th=[ 334], 99.50th=[ 376], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 30, max= 191, per=25.76%, avg=85.25, stdev=33.36, samples=144 iops : min= 1, max= 11, avg= 4.49, stdev= 2.11, samples=144 lat (msec) : 10=0.26%, 20=7.94%, 50=28.26%, 100=17.45%, 250=43.75% lat (msec) : 500=2.21%, 750=0.13% cpu : usr=0.06%, sys=1.84%, ctx=1481, 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=315KiB/s (323kB/s), 75.6KiB/s-86.3KiB/s (77.4kB/s-88.4kB/s), io=23.4MiB (24.5MB), run=72489-76009msec WRITE: bw=332KiB/s (339kB/s), 83.2KiB/s-86.1KiB/s (85.2kB/s-88.2kB/s), io=24.6MiB (25.8MB), run=72489-76009msec 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=144945: Sat Aug 22 08:07:07 2026 read: IOPS=1, BW=1819KiB/s (1862kB/s)(7168KiB/3941msec) clat (msec): min=74, max=519, avg=222.26, stdev=174.63 lat (msec): min=74, max=519, avg=222.27, stdev=174.63 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 117], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 127], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 422], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 2035, max= 4156, per=82.03%, avg=3346.67, stdev=1146.26, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1299KiB/s (1330kB/s)(5120KiB/3941msec); 0 zone resets clat (msec): min=278, max=587, avg=459.63, stdev=118.57 lat (msec): min=279, max=587, avg=459.81, stdev=118.60 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 443], 40.00th=[ 443], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1980, max= 2043, per=35.33%, avg=2018.25, stdev=28.09, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=25.00% cpu : usr=0.03%, sys=4.90%, ctx=87, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144946: Sat Aug 22 08:07:07 2026 read: IOPS=0, BW=408KiB/s (418kB/s)(2048KiB/5019msec) clat (msec): min=141, max=701, avg=421.43, stdev=396.31 lat (msec): min=141, max=701, avg=421.43, stdev=396.31 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 2031, max= 2043, per=49.93%, avg=2037.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2040KiB/s (2089kB/s)(10.0MiB/5019msec); 0 zone resets clat (msec): min=100, max=1062, avg=409.95, stdev=275.69 lat (msec): min=101, max=1062, avg=410.11, stdev=275.76 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 201], | 30.00th=[ 230], 40.00th=[ 284], 50.00th=[ 309], 60.00th=[ 330], | 70.00th=[ 439], 80.00th=[ 558], 90.00th=[ 584], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 2000, max= 3961, per=41.19%, avg=2352.83, stdev=788.00, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=33.33%, 500=33.33%, 750=25.00%, 2000=8.33% cpu : usr=0.04%, sys=5.02%, ctx=88, 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=144947: Sat Aug 22 08:07:07 2026 read: IOPS=1, BW=1416KiB/s (1450kB/s)(6144KiB/4340msec) clat (msec): min=194, max=530, avg=380.35, stdev=129.00 lat (msec): min=194, max=530, avg=380.35, stdev=129.00 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 439], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 1980, max= 4000, per=61.32%, avg=2501.75, stdev=999.18, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1416KiB/s (1450kB/s)(6144KiB/4340msec); 0 zone resets clat (msec): min=170, max=489, avg=339.16, stdev=153.64 lat (msec): min=171, max=489, avg=339.32, stdev=153.62 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 460], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 1996, max= 4063, per=42.62%, avg=2434.40, stdev=910.60, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=58.33%, 750=8.33% cpu : usr=0.02%, sys=3.76%, ctx=55, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144948: Sat Aug 22 08:07:07 2026 read: IOPS=1, BW=1106KiB/s (1133kB/s)(5120KiB/4628msec) clat (msec): min=61, max=913, avg=376.15, stdev=325.48 lat (msec): min=61, max=913, avg=376.15, stdev=325.48 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 62], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1980, max= 2039, per=49.44%, avg=2017.25, stdev=26.96, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1549KiB/s (1586kB/s)(7168KiB/4628msec); 0 zone resets clat (msec): min=144, max=655, avg=376.04, stdev=207.54 lat (msec): min=144, max=655, avg=376.18, stdev=207.55 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 171], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 426], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 600], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1924, max= 2805, per=38.53%, avg=2200.75, stdev=406.37, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.02%, sys=3.93%, ctx=66, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4080KiB/s (4178kB/s), 408KiB/s-1819KiB/s (418kB/s-1862kB/s), io=20.0MiB (20.0MB), run=3941-5019msec WRITE: bw=5713KiB/s (5850kB/s), 1299KiB/s-2040KiB/s (1330kB/s-2089kB/s), io=28.0MiB (29.4MB), run=3941-5019msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144950: Sat Aug 22 08:07:08 2026 read: IOPS=1, BW=1999KiB/s (2047kB/s)(7168KiB/3585msec) clat (usec): min=695, max=592528, avg=243299.16, stdev=235161.08 lat (usec): min=696, max=592530, avg=243301.05, stdev=235161.22 clat percentiles (usec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 816], | 30.00th=[156238], 40.00th=[156238], 50.00th=[204473], 60.00th=[219153], | 70.00th=[219153], 80.00th=[530580], 90.00th=[591397], 95.00th=[591397], | 99.00th=[591397], 99.50th=[591397], 99.90th=[591397], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 1910, max= 4047, per=67.45%, avg=2992.00, stdev=1178.68, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1428KiB/s (1462kB/s)(5120KiB/3585msec); 0 zone resets clat (msec): min=187, max=565, avg=373.30, stdev=148.37 lat (msec): min=187, max=565, avg=373.44, stdev=148.39 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 439], 80.00th=[ 439], 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= 2035, max= 3778, per=42.19%, avg=2620.33, stdev=1002.59, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=33.33%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=16.41%, ctx=182, 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=144951: Sat Aug 22 08:07:08 2026 read: IOPS=0, BW=444KiB/s (454kB/s)(2048KiB/4616msec) clat (msec): min=173, max=566, avg=370.37, stdev=278.03 lat (msec): min=173, max=566, avg=370.37, stdev=278.03 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 174], 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= 1841, max= 2035, per=43.69%, avg=1938.00, stdev=137.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2218KiB/s (2272kB/s)(10.0MiB/4616msec); 0 zone resets clat (msec): min=98, max=878, avg=387.17, stdev=255.67 lat (msec): min=98, max=878, avg=387.38, stdev=255.68 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 157], | 30.00th=[ 180], 40.00th=[ 222], 50.00th=[ 305], 60.00th=[ 334], | 70.00th=[ 464], 80.00th=[ 531], 90.00th=[ 709], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1889, max= 4096, per=45.30%, avg=2813.60, stdev=1149.83, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.30, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=15.47%, ctx=133, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144952: Sat Aug 22 08:07:08 2026 read: IOPS=1, BW=1584KiB/s (1622kB/s)(6144KiB/3878msec) clat (usec): min=456, max=409216, avg=241075.54, stdev=169229.70 lat (usec): min=458, max=409218, avg=241077.07, stdev=169229.80 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[ 78119], | 30.00th=[ 78119], 40.00th=[235930], 50.00th=[235930], 60.00th=[333448], | 70.00th=[387974], 80.00th=[387974], 90.00th=[408945], 95.00th=[408945], | 99.00th=[408945], 99.50th=[408945], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 1889, max= 3976, per=55.88%, avg=2478.75, stdev=1000.26, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1584KiB/s (1622kB/s)(6144KiB/3878msec); 0 zone resets clat (msec): min=280, max=670, avg=404.81, stdev=171.05 lat (msec): min=280, max=670, avg=404.96, stdev=171.00 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 317], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1889, max= 2048, per=32.29%, avg=2005.50, stdev=58.23, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (usec) : 500=8.33% lat (msec) : 100=8.33%, 250=8.33%, 500=58.33%, 750=16.67% cpu : usr=0.00%, sys=14.34%, ctx=196, 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=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=144953: Sat Aug 22 08:07:08 2026 read: IOPS=1, BW=1231KiB/s (1260kB/s)(5120KiB/4160msec) clat (usec): min=686, max=402065, avg=195951.96, stdev=189588.06 lat (usec): min=687, max=402183, avg=195976.72, stdev=189620.00 clat percentiles (usec): | 1.00th=[ 685], 5.00th=[ 685], 10.00th=[ 685], 20.00th=[ 685], | 30.00th=[ 1037], 40.00th=[ 1037], 50.00th=[223347], 60.00th=[223347], | 70.00th=[350225], 80.00th=[350225], 90.00th=[400557], 95.00th=[400557], | 99.00th=[400557], 99.50th=[400557], 99.90th=[400557], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 2035, max= 6047, per=91.10%, avg=4041.00, stdev=2836.91, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1723KiB/s (1764kB/s)(7168KiB/4160msec); 0 zone resets clat (msec): min=132, max=940, avg=452.70, stdev=313.54 lat (msec): min=132, max=941, avg=452.89, stdev=313.61 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 176], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 326], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 735], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1988, max= 4096, per=47.84%, avg=2971.25, stdev=1122.77, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=13.15%, ctx=127, 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=4437KiB/s (4543kB/s), 444KiB/s-1999KiB/s (454kB/s-2047kB/s), io=20.0MiB (20.0MB), run=3585-4616msec WRITE: bw=6211KiB/s (6361kB/s), 1428KiB/s-2218KiB/s (1462kB/s-2272kB/s), io=28.0MiB (29.4MB), run=3585-4616msec 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=144959: Sat Aug 22 08:07:24 2026 read: IOPS=1, BW=5046KiB/s (5168kB/s)(12.0MiB/2435msec) clat (msec): min=285, max=1178, avg=751.85, stdev=447.71 lat (msec): min=285, max=1178, avg=751.85, stdev=447.71 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1183], 80.00th=[ 1183], 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= 5497, max= 7922, per=100.00%, avg=6709.50, stdev=1714.73, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.49%, ctx=79, 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=144960: Sat Aug 22 08:07:24 2026 read: IOPS=0, BW=1361KiB/s (1394kB/s)(4096KiB/3009msec) clat (nsec): min=706015k, max=706015k, avg=706014845.00, stdev= 0.00 lat (nsec): min=706016k, max=706016k, avg=706015933.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7922, max= 7922, per=100.00%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2722KiB/s (2788kB/s)(8192KiB/3009msec); 0 zone resets clat (msec): min=730, max=1480, avg=1105.21, stdev=530.47 lat (msec): min=731, max=1480, avg=1105.97, stdev=530.11 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] 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) : 750=66.67%, 2000=33.33% cpu : usr=0.07%, sys=6.35%, ctx=66, 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=144961: Sat Aug 22 08:07:24 2026 write: IOPS=0, BW=2977KiB/s (3049kB/s)(12.0MiB/4127msec); 0 zone resets clat (msec): min=418, max=1850, avg=1372.59, stdev=826.39 lat (msec): min=420, max=1852, avg=1374.00, stdev=825.95 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 1854], 50.00th=[ 1854], 60.00th=[ 1854], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.36%, ctx=60, 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=144963: Sat Aug 22 08:07:24 2026 write: IOPS=1, BW=4483KiB/s (4591kB/s)(12.0MiB/2741msec); 0 zone resets clat (msec): min=519, max=1185, avg=907.59, stdev=346.32 lat (msec): min=520, max=1186, avg=909.20, stdev=347.09 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1183], 80.00th=[ 1183], 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= 7301, max= 8110, per=97.06%, avg=7705.50, stdev=572.05, 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=4.64%, ctx=51, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5445KiB/s (5576kB/s), 1361KiB/s-5046KiB/s (1394kB/s-5168kB/s), io=16.0MiB (16.8MB), run=2435-3009msec WRITE: bw=7940KiB/s (8130kB/s), 2722KiB/s-4483KiB/s (2788kB/s-4591kB/s), io=32.0MiB (33.6MB), run=2741-4127msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144964: Sat Aug 22 08:07:24 2026 read: IOPS=0, BW=4013KiB/s (4109kB/s)(12.0MiB/3062msec) clat (msec): min=899, max=1210, avg=1019.50, stdev=167.01 lat (msec): min=899, max=1210, avg=1019.51, stdev=167.01 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 8062, max= 8094, per=100.00%, avg=8078.00, stdev=22.63, 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=0.03%, sys=12.19%, ctx=370, 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=144965: Sat Aug 22 08:07:24 2026 read: IOPS=0, BW=962KiB/s (985kB/s)(4096KiB/4257msec) clat (nsec): min=944559k, max=944559k, avg=944558687.00, stdev= 0.00 lat (nsec): min=944563k, max=944563k, avg=944563043.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 944], 5.00th=[ 944], 10.00th=[ 944], 20.00th=[ 944], | 30.00th=[ 944], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1924KiB/s (1971kB/s)(8192KiB/4257msec); 0 zone resets clat (msec): min=1157, max=2150, avg=1654.25, stdev=701.95 lat (msec): min=1158, max=2151, avg=1654.78, stdev=702.05 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 2165], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=2.98%, ctx=148, 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=144966: Sat Aug 22 08:07:24 2026 write: IOPS=0, BW=2922KiB/s (2992kB/s)(12.0MiB/4205msec); 0 zone resets clat (msec): min=406, max=2176, avg=1399.22, stdev=904.73 lat (msec): min=406, max=2177, avg=1400.90, stdev=905.26 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 1620], 50.00th=[ 1620], 60.00th=[ 1620], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] 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 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.12%, ctx=29, 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=144967: Sat Aug 22 08:07:24 2026 write: IOPS=0, BW=3278KiB/s (3356kB/s)(12.0MiB/3749msec); 0 zone resets clat (msec): min=314, max=2229, avg=1248.32, stdev=958.49 lat (msec): min=314, max=2229, avg=1248.74, stdev=958.50 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, 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%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.54%, ctx=40, 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=3849KiB/s (3941kB/s), 962KiB/s-4013KiB/s (985kB/s-4109kB/s), io=16.0MiB (16.8MB), run=3062-4257msec WRITE: bw=7697KiB/s (7882kB/s), 1924KiB/s-3278KiB/s (1971kB/s-3356kB/s), io=32.0MiB (33.6MB), run=3749-4257msec