== sanity test 398b: DIO and buffer IO race ============== 05:40:10 (1787391610) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.47086 s, 9.2 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=179308: Sat Aug 22 05:42:44 2026 read: IOPS=11, BW=44.3KiB/s (45.4kB/s)(5992KiB/135239msec) clat (usec): min=45, max=367138, avg=50156.29, stdev=32433.39 lat (usec): min=45, max=367140, avg=50158.77, stdev=32432.90 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 13960], 10.00th=[ 19792], 20.00th=[ 26608], | 30.00th=[ 31851], 40.00th=[ 38011], 50.00th=[ 43779], 60.00th=[ 50594], | 70.00th=[ 59507], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[105382], | 99.00th=[160433], 99.50th=[191890], 99.90th=[283116], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 103, per=24.80%, avg=43.90, stdev=16.78, samples=266 iops : min= 1, max= 25, avg=10.32, stdev= 4.22, samples=266 write: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6296KiB/135239msec); 0 zone resets clat (usec): min=1177, max=670838, avg=37936.08, stdev=42140.76 lat (usec): min=1178, max=670839, avg=37937.66, stdev=42140.75 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1434], 10.00th=[ 2278], 20.00th=[ 4293], | 30.00th=[ 8029], 40.00th=[ 16450], 50.00th=[ 26084], 60.00th=[ 36439], | 70.00th=[ 48497], 80.00th=[ 64750], 90.00th=[ 93848], 95.00th=[114820], | 99.00th=[170918], 99.50th=[206570], 99.90th=[250610], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 7, max= 127, per=24.92%, avg=46.10, stdev=21.50, samples=266 iops : min= 1, max= 31, avg=10.88, stdev= 5.40, samples=266 lat (usec) : 50=0.10%, 100=1.53%, 250=0.10%, 500=0.03% lat (msec) : 2=4.43%, 4=5.11%, 10=7.85%, 20=8.07%, 50=37.96% lat (msec) : 100=27.31%, 250=7.36%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=4.88%, ctx=6815, 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=179309: Sat Aug 22 05:42:44 2026 read: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5940KiB/131453msec) clat (usec): min=43, max=197401, avg=47788.51, stdev=29336.41 lat (usec): min=44, max=197403, avg=47790.05, stdev=29337.25 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 14484], 10.00th=[ 19268], 20.00th=[ 25297], | 30.00th=[ 30540], 40.00th=[ 35914], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 57934], 80.00th=[ 68682], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[158335], 99.50th=[170918], 99.90th=[196084], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 7, max= 95, per=25.33%, avg=44.83, stdev=17.47, samples=259 iops : min= 1, max= 23, avg=10.55, stdev= 4.38, samples=259 write: IOPS=12, BW=48.3KiB/s (49.5kB/s)(6348KiB/131453msec); 0 zone resets clat (usec): min=1173, max=672249, avg=37834.57, stdev=43043.29 lat (usec): min=1173, max=672251, avg=37839.17, stdev=43048.94 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1467], 10.00th=[ 2376], 20.00th=[ 4686], | 30.00th=[ 8356], 40.00th=[ 15533], 50.00th=[ 25822], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 64226], 90.00th=[ 89654], 95.00th=[116917], | 99.00th=[177210], 99.50th=[223347], 99.90th=[362808], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 7, max= 104, per=25.81%, avg=47.76, stdev=19.96, samples=260 iops : min= 1, max= 26, avg=11.29, stdev= 5.00, samples=260 lat (usec) : 50=0.07%, 100=1.27%, 250=0.26%, 500=0.03%, 750=0.03% lat (msec) : 2=4.20%, 4=5.11%, 10=8.17%, 20=8.89%, 50=38.51% lat (msec) : 100=27.21%, 250=6.15%, 500=0.07%, 750=0.03% cpu : usr=0.09%, sys=5.03%, ctx=6842, 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=179310: Sat Aug 22 05:42:44 2026 read: IOPS=11, BW=44.6KiB/s (45.7kB/s)(6028KiB/135058msec) clat (usec): min=39, max=268171, avg=48912.79, stdev=32728.84 lat (usec): min=39, max=268172, avg=48917.65, stdev=32734.52 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11469], 10.00th=[ 18482], 20.00th=[ 25035], | 30.00th=[ 30802], 40.00th=[ 35914], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 56886], 80.00th=[ 68682], 90.00th=[ 86508], 95.00th=[109577], | 99.00th=[166724], 99.50th=[191890], 99.90th=[258999], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 7, max= 103, per=25.21%, avg=44.62, stdev=17.99, samples=264 iops : min= 1, max= 25, avg=10.49, stdev= 4.52, samples=264 write: IOPS=11, BW=46.3KiB/s (47.5kB/s)(6260KiB/135058msec); 0 zone resets clat (usec): min=1172, max=843416, avg=38918.30, stdev=43826.61 lat (usec): min=1173, max=843418, avg=38922.48, stdev=43825.08 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1500], 10.00th=[ 2343], 20.00th=[ 4752], | 30.00th=[ 8717], 40.00th=[ 18220], 50.00th=[ 28181], 60.00th=[ 37487], | 70.00th=[ 49021], 80.00th=[ 65274], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[160433], 99.50th=[191890], 99.90th=[299893], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 7, max= 111, per=24.91%, avg=46.08, stdev=20.34, samples=265 iops : min= 1, max= 27, avg=10.87, stdev= 5.09, samples=265 lat (usec) : 50=0.20%, 100=1.56%, 250=0.26%, 500=0.03% lat (msec) : 2=4.30%, 4=4.33%, 10=7.75%, 20=8.30%, 50=39.42% lat (msec) : 100=26.63%, 250=7.03%, 500=0.16%, 1000=0.03% cpu : usr=0.07%, sys=4.87%, ctx=6738, 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=179311: Sat Aug 22 05:42:44 2026 read: IOPS=11, BW=45.1KiB/s (46.2kB/s)(6052KiB/134164msec) clat (usec): min=39, max=299999, avg=48423.35, stdev=31813.86 lat (usec): min=39, max=300000, avg=48424.64, stdev=31813.90 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 12911], 10.00th=[ 18744], 20.00th=[ 25035], | 30.00th=[ 29754], 40.00th=[ 35390], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 57934], 80.00th=[ 68682], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[168821], 99.50th=[214959], 99.90th=[252707], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 7, max= 87, per=25.50%, avg=45.13, stdev=17.77, samples=262 iops : min= 1, max= 21, avg=10.63, stdev= 4.45, samples=262 write: IOPS=11, BW=46.5KiB/s (47.6kB/s)(6236KiB/134164msec); 0 zone resets clat (usec): min=1193, max=753358, avg=38788.27, stdev=44682.28 lat (usec): min=1193, max=753359, avg=38790.57, stdev=44682.32 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1483], 10.00th=[ 2343], 20.00th=[ 4359], | 30.00th=[ 7701], 40.00th=[ 17695], 50.00th=[ 27132], 60.00th=[ 36439], | 70.00th=[ 49021], 80.00th=[ 68682], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[175113], 99.50th=[204473], 99.90th=[396362], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 7, max= 111, per=25.08%, avg=46.40, stdev=20.41, samples=262 iops : min= 1, max= 27, avg=10.96, stdev= 5.13, samples=262 lat (usec) : 50=0.16%, 100=1.53%, 250=0.20%, 500=0.07%, 750=0.03% lat (msec) : 2=4.00%, 4=5.27%, 10=7.58%, 20=8.43%, 50=38.48% lat (msec) : 100=27.44%, 250=6.58%, 500=0.20%, 1000=0.03% cpu : usr=0.08%, sys=4.85%, ctx=6748, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=178KiB/s (182kB/s), 44.3KiB/s-45.2KiB/s (45.4kB/s-46.3kB/s), io=23.4MiB (24.6MB), run=131453-135239msec WRITE: bw=186KiB/s (190kB/s), 46.3KiB/s-48.3KiB/s (47.5kB/s-49.5kB/s), io=24.6MiB (25.7MB), run=131453-135239msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179312: Sat Aug 22 05:43:26 2026 read: IOPS=8, BW=33.9KiB/s (34.7kB/s)(5992KiB/176815msec) clat (msec): min=5, max=1137, avg=46.29, stdev=50.13 lat (msec): min=5, max=1137, avg=46.29, stdev=50.13 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 68], 90.00th=[ 103], 95.00th=[ 131], | 99.00th=[ 201], 99.50th=[ 222], 99.90th=[ 401], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 126, per=25.69%, avg=34.68, stdev=25.06, samples=335 iops : min= 1, max= 31, avg= 7.99, stdev= 6.31, samples=335 write: IOPS=8, BW=35.6KiB/s (36.5kB/s)(6296KiB/176815msec); 0 zone resets clat (msec): min=11, max=438, avg=68.05, stdev=50.09 lat (msec): min=11, max=438, avg=68.05, stdev=50.09 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 80], 80.00th=[ 100], 90.00th=[ 131], 95.00th=[ 165], | 99.00th=[ 255], 99.50th=[ 288], 99.90th=[ 418], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 7, max= 111, per=25.05%, avg=35.33, stdev=23.03, samples=345 iops : min= 1, max= 27, avg= 8.15, stdev= 5.79, samples=345 lat (msec) : 10=1.50%, 20=12.50%, 50=45.93%, 100=24.93%, 250=14.29% lat (msec) : 500=0.81%, 2000=0.03% cpu : usr=0.07%, sys=2.07%, ctx=5136, 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=179313: Sat Aug 22 05:43:26 2026 read: IOPS=8, BW=33.5KiB/s (34.3kB/s)(5940KiB/177200msec) clat (msec): min=6, max=692, avg=46.62, stdev=46.94 lat (msec): min=6, max=692, avg=46.62, stdev=46.94 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 65], 90.00th=[ 104], 95.00th=[ 140], | 99.00th=[ 215], 99.50th=[ 249], 99.90th=[ 384], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 141, per=25.01%, avg=33.77, stdev=25.29, samples=341 iops : min= 1, max= 35, avg= 7.77, stdev= 6.36, samples=341 write: IOPS=8, BW=35.8KiB/s (36.7kB/s)(6348KiB/177200msec); 0 zone resets clat (msec): min=11, max=441, avg=67.79, stdev=48.64 lat (msec): min=11, max=441, avg=67.79, stdev=48.64 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 63], | 70.00th=[ 82], 80.00th=[ 99], 90.00th=[ 134], 95.00th=[ 165], | 99.00th=[ 226], 99.50th=[ 255], 99.90th=[ 397], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 119, per=25.19%, avg=35.52, stdev=23.21, samples=346 iops : min= 1, max= 29, avg= 8.20, stdev= 5.83, samples=346 lat (msec) : 10=1.53%, 20=13.77%, 50=44.89%, 100=24.51%, 250=14.75% lat (msec) : 500=0.52%, 750=0.03% cpu : usr=0.06%, sys=2.06%, ctx=5003, 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=179314: Sat Aug 22 05:43:26 2026 read: IOPS=8, BW=34.1KiB/s (34.9kB/s)(6028KiB/177015msec) clat (msec): min=6, max=405, avg=46.62, stdev=41.97 lat (msec): min=6, max=405, avg=46.62, stdev=41.97 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 67], 90.00th=[ 103], 95.00th=[ 133], | 99.00th=[ 209], 99.50th=[ 230], 99.90th=[ 279], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7, max= 126, per=25.45%, avg=34.36, stdev=24.59, samples=341 iops : min= 1, max= 31, avg= 7.91, stdev= 6.17, samples=341 write: IOPS=8, BW=35.4KiB/s (36.2kB/s)(6260KiB/177015msec); 0 zone resets clat (msec): min=11, max=750, avg=68.00, stdev=51.00 lat (msec): min=11, max=750, avg=68.00, stdev=51.00 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 79], 80.00th=[ 101], 90.00th=[ 138], 95.00th=[ 163], | 99.00th=[ 245], 99.50th=[ 279], 99.90th=[ 342], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 103, per=24.93%, avg=35.14, stdev=23.44, samples=346 iops : min= 1, max= 25, avg= 8.11, stdev= 5.89, samples=346 lat (msec) : 10=1.17%, 20=13.25%, 50=44.89%, 100=25.42%, 250=14.68% lat (msec) : 500=0.55%, 1000=0.03% cpu : usr=0.06%, sys=2.01%, ctx=4963, 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=179315: Sat Aug 22 05:43:26 2026 read: IOPS=8, BW=34.3KiB/s (35.1kB/s)(6052KiB/176564msec) clat (msec): min=6, max=385, avg=46.05, stdev=44.50 lat (msec): min=6, max=385, avg=46.05, stdev=44.50 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 66], 90.00th=[ 102], 95.00th=[ 138], | 99.00th=[ 215], 99.50th=[ 247], 99.90th=[ 342], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 157, per=26.08%, avg=35.21, stdev=24.98, samples=334 iops : min= 1, max= 39, avg= 8.13, stdev= 6.28, samples=334 write: IOPS=8, BW=35.3KiB/s (36.2kB/s)(6236KiB/176564msec); 0 zone resets clat (msec): min=12, max=746, avg=68.33, stdev=52.35 lat (msec): min=12, max=746, avg=68.34, stdev=52.35 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 51], 60.00th=[ 64], | 70.00th=[ 81], 80.00th=[ 103], 90.00th=[ 134], 95.00th=[ 165], | 99.00th=[ 245], 99.50th=[ 284], 99.90th=[ 388], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 111, per=24.96%, avg=35.20, stdev=23.48, samples=344 iops : min= 1, max= 27, avg= 8.12, stdev= 5.90, samples=344 lat (msec) : 10=1.20%, 20=14.81%, 50=44.79%, 100=23.63%, 250=14.88% lat (msec) : 500=0.65%, 750=0.03% cpu : usr=0.06%, sys=2.03%, ctx=4955, 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=136KiB/s (139kB/s), 33.5KiB/s-34.3KiB/s (34.3kB/s-35.1kB/s), io=23.4MiB (24.6MB), run=176564-177200msec WRITE: bw=142KiB/s (145kB/s), 35.3KiB/s-35.8KiB/s (36.2kB/s-36.7kB/s), io=24.6MiB (25.7MB), run=176564-177200msec 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=179362: Sat Aug 22 05:44:13 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(5920KiB/35961msec) clat (usec): min=41, max=225278, avg=52846.53, stdev=37155.11 lat (usec): min=41, max=225280, avg=52847.89, stdev=37155.08 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 70], 10.00th=[ 147], 20.00th=[ 25560], | 30.00th=[ 33817], 40.00th=[ 40109], 50.00th=[ 45876], 60.00th=[ 54264], | 70.00th=[ 63701], 80.00th=[ 76022], 90.00th=[ 96994], 95.00th=[125305], | 99.00th=[173016], 99.50th=[223347], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 370, per=24.67%, avg=162.56, stdev=60.52, samples=70 iops : min= 1, max= 23, avg= 9.36, stdev= 3.82, samples=70 write: IOPS=11, BW=177KiB/s (181kB/s)(6368KiB/35961msec); 0 zone resets clat (usec): min=1889, max=205915, avg=41005.31, stdev=38660.83 lat (usec): min=1890, max=205919, avg=41023.59, stdev=38650.57 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2704], 10.00th=[ 3818], 20.00th=[ 6718], | 30.00th=[ 11338], 40.00th=[ 17957], 50.00th=[ 29230], 60.00th=[ 40633], | 70.00th=[ 54789], 80.00th=[ 76022], 90.00th=[ 95945], 95.00th=[121111], | 99.00th=[137364], 99.50th=[198181], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 31, max= 415, per=25.42%, avg=176.14, stdev=75.41, samples=70 iops : min= 1, max= 25, avg=10.21, stdev= 4.75, samples=70 lat (usec) : 50=0.13%, 100=4.30%, 250=0.52%, 500=0.13% lat (msec) : 2=1.04%, 4=4.56%, 10=8.33%, 20=9.51%, 50=32.16% lat (msec) : 100=30.08%, 250=9.24% cpu : usr=0.05%, sys=5.28%, ctx=1738, 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=179363: Sat Aug 22 05:44:13 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(5744KiB/35720msec) clat (usec): min=43, max=221437, avg=50588.51, stdev=32488.78 lat (usec): min=43, max=221438, avg=50589.90, stdev=32488.73 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 71], 10.00th=[ 116], 20.00th=[ 25560], | 30.00th=[ 34341], 40.00th=[ 41681], 50.00th=[ 48497], 60.00th=[ 55313], | 70.00th=[ 62653], 80.00th=[ 76022], 90.00th=[ 88605], 95.00th=[104334], | 99.00th=[141558], 99.50th=[189793], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 22, max= 287, per=24.77%, avg=163.26, stdev=67.98, samples=69 iops : min= 1, max= 17, avg= 9.41, stdev= 4.28, samples=69 write: IOPS=11, BW=183KiB/s (188kB/s)(6544KiB/35720msec); 0 zone resets clat (usec): min=1856, max=279070, avg=41777.35, stdev=42017.68 lat (usec): min=1859, max=279074, avg=41780.47, stdev=42017.42 clat percentiles (usec): | 1.00th=[ 1991], 5.00th=[ 2638], 10.00th=[ 3982], 20.00th=[ 6325], | 30.00th=[ 10421], 40.00th=[ 20841], 50.00th=[ 28705], 60.00th=[ 41157], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 99091], 95.00th=[116917], | 99.00th=[191890], 99.50th=[210764], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 474, per=26.48%, avg=183.49, stdev=82.77, samples=70 iops : min= 1, max= 29, avg=10.67, stdev= 5.18, samples=70 lat (usec) : 50=0.39%, 100=3.65%, 250=0.78% lat (msec) : 2=0.78%, 4=4.82%, 10=10.03%, 20=7.55%, 50=30.86% lat (msec) : 100=33.07%, 250=7.94%, 500=0.13% cpu : usr=0.06%, sys=5.11%, ctx=1701, 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=179364: Sat Aug 22 05:44:13 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(6256KiB/36312msec) clat (usec): min=46, max=200530, avg=51558.51, stdev=33441.43 lat (usec): min=46, max=200532, avg=51560.00, stdev=33441.53 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 73], 10.00th=[ 347], 20.00th=[ 27919], | 30.00th=[ 34341], 40.00th=[ 40109], 50.00th=[ 47449], 60.00th=[ 55313], | 70.00th=[ 63701], 80.00th=[ 73925], 90.00th=[ 89654], 95.00th=[114820], | 99.00th=[154141], 99.50th=[193987], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 31, max= 349, per=26.13%, avg=172.20, stdev=68.41, samples=71 iops : min= 1, max= 21, avg= 9.99, stdev= 4.29, samples=71 write: IOPS=10, BW=166KiB/s (170kB/s)(6032KiB/36312msec); 0 zone resets clat (usec): min=1696, max=226280, avg=41873.09, stdev=41364.87 lat (usec): min=1697, max=226282, avg=41876.74, stdev=41364.61 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2343], 10.00th=[ 4293], 20.00th=[ 7308], | 30.00th=[ 10814], 40.00th=[ 19792], 50.00th=[ 32113], 60.00th=[ 39060], | 70.00th=[ 51643], 80.00th=[ 69731], 90.00th=[ 98042], 95.00th=[125305], | 99.00th=[181404], 99.50th=[221250], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 380, per=23.83%, avg=165.14, stdev=74.39, samples=70 iops : min= 1, max= 23, avg= 9.53, stdev= 4.72, samples=70 lat (usec) : 50=0.26%, 100=4.17%, 250=0.65%, 500=0.13% lat (msec) : 2=1.30%, 4=3.65%, 10=9.64%, 20=6.25%, 50=35.03% lat (msec) : 100=30.21%, 250=8.72% cpu : usr=0.07%, sys=5.25%, ctx=1775, 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=179365: Sat Aug 22 05:44:13 2026 read: IOPS=10, BW=176KiB/s (180kB/s)(6032KiB/34321msec) clat (usec): min=32, max=191001, avg=49220.72, stdev=34156.92 lat (usec): min=33, max=191002, avg=49236.57, stdev=34138.58 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 82], 20.00th=[ 22938], | 30.00th=[ 32900], 40.00th=[ 39060], 50.00th=[ 46400], 60.00th=[ 55313], | 70.00th=[ 63177], 80.00th=[ 73925], 90.00th=[ 93848], 95.00th=[107480], | 99.00th=[149947], 99.50th=[156238], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 63, max= 351, per=27.02%, avg=178.03, stdev=67.40, samples=66 iops : min= 3, max= 21, avg=10.33, stdev= 4.24, samples=66 write: IOPS=11, BW=182KiB/s (187kB/s)(6256KiB/34321msec); 0 zone resets clat (usec): min=1690, max=221825, avg=39188.81, stdev=37852.82 lat (usec): min=1693, max=221829, avg=39205.97, stdev=37851.34 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2442], 10.00th=[ 3523], 20.00th=[ 7046], | 30.00th=[ 12387], 40.00th=[ 20055], 50.00th=[ 30016], 60.00th=[ 38011], | 70.00th=[ 47973], 80.00th=[ 63177], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[183501], 99.50th=[193987], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 63, max= 383, per=26.39%, avg=182.90, stdev=70.78, samples=67 iops : min= 3, max= 23, avg=10.64, stdev= 4.42, samples=67 lat (usec) : 50=0.26%, 100=5.73%, 250=1.56%, 500=0.13%, 750=0.13% lat (msec) : 2=1.30%, 4=4.95%, 10=7.55%, 20=7.55%, 50=33.98% lat (msec) : 100=29.30%, 250=7.55% cpu : usr=0.07%, sys=5.54%, ctx=1647, 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=660KiB/s (675kB/s), 161KiB/s-176KiB/s (165kB/s-180kB/s), io=23.4MiB (24.5MB), run=34321-36312msec WRITE: bw=694KiB/s (711kB/s), 166KiB/s-183KiB/s (170kB/s-188kB/s), io=24.6MiB (25.8MB), run=34321-36312msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179366: Sat Aug 22 05:44:27 2026 read: IOPS=7, BW=119KiB/s (122kB/s)(5920KiB/49634msec) clat (msec): min=7, max=202, avg=49.91, stdev=37.44 lat (msec): min=7, max=202, avg=49.91, stdev=37.44 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 57], 80.00th=[ 73], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 176], 99.50th=[ 190], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 30, max= 319, per=25.29%, avg=121.66, stdev=75.43, samples=96 iops : min= 1, max= 19, avg= 6.77, stdev= 4.70, samples=96 write: IOPS=8, BW=128KiB/s (131kB/s)(6368KiB/49634msec); 0 zone resets clat (msec): min=18, max=313, avg=77.23, stdev=47.25 lat (msec): min=18, max=313, avg=77.24, stdev=47.25 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 42], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 73], | 70.00th=[ 87], 80.00th=[ 107], 90.00th=[ 144], 95.00th=[ 178], | 99.00th=[ 245], 99.50th=[ 266], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 318, per=25.50%, avg=129.05, stdev=65.75, samples=97 iops : min= 1, max= 19, avg= 7.25, stdev= 4.12, samples=97 lat (msec) : 10=0.65%, 20=7.29%, 50=41.02%, 100=33.46%, 250=17.19% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=2.02%, ctx=1262, 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=179367: Sat Aug 22 05:44:27 2026 read: IOPS=7, BW=117KiB/s (120kB/s)(5744KiB/49206msec) clat (msec): min=9, max=270, avg=51.67, stdev=43.96 lat (msec): min=9, max=270, avg=51.67, stdev=43.96 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 73], 90.00th=[ 117], 95.00th=[ 159], | 99.00th=[ 205], 99.50th=[ 245], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 30, max= 412, per=25.31%, avg=121.72, stdev=78.91, samples=93 iops : min= 1, max= 25, avg= 6.78, stdev= 4.95, samples=93 write: IOPS=8, BW=133KiB/s (136kB/s)(6544KiB/49206msec); 0 zone resets clat (msec): min=15, max=310, avg=74.12, stdev=44.06 lat (msec): min=15, max=310, avg=74.13, stdev=44.06 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 29], 10.00th=[ 33], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 62], 60.00th=[ 71], | 70.00th=[ 86], 80.00th=[ 110], 90.00th=[ 140], 95.00th=[ 165], | 99.00th=[ 211], 99.50th=[ 222], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 381, per=26.16%, avg=132.35, stdev=74.36, samples=97 iops : min= 1, max= 23, avg= 7.45, stdev= 4.66, samples=97 lat (msec) : 10=0.26%, 20=5.99%, 50=46.35%, 100=29.56%, 250=17.58% lat (msec) : 500=0.26% cpu : usr=0.07%, sys=2.09%, ctx=1263, 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=179368: Sat Aug 22 05:44:27 2026 read: IOPS=7, BW=126KiB/s (129kB/s)(6256KiB/49635msec) clat (msec): min=10, max=285, avg=51.49, stdev=42.33 lat (msec): min=10, max=285, avg=51.49, stdev=42.34 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 54], 80.00th=[ 71], 90.00th=[ 107], 95.00th=[ 142], | 99.00th=[ 228], 99.50th=[ 279], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 383, per=26.54%, avg=127.64, stdev=88.06, samples=96 iops : min= 1, max= 23, avg= 7.15, stdev= 5.51, samples=96 write: IOPS=7, BW=122KiB/s (124kB/s)(6032KiB/49635msec); 0 zone resets clat (msec): min=23, max=266, avg=77.21, stdev=47.74 lat (msec): min=23, max=266, avg=77.21, stdev=47.74 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 29], 10.00th=[ 33], 20.00th=[ 41], | 30.00th=[ 46], 40.00th=[ 53], 50.00th=[ 62], 60.00th=[ 71], | 70.00th=[ 90], 80.00th=[ 111], 90.00th=[ 146], 95.00th=[ 180], | 99.00th=[ 245], 99.50th=[ 249], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 30, max= 318, per=23.56%, avg=119.21, stdev=60.72, samples=97 iops : min= 1, max= 19, avg= 6.63, stdev= 3.79, samples=97 lat (msec) : 20=6.12%, 50=45.44%, 100=30.34%, 250=17.58%, 500=0.52% cpu : usr=0.05%, sys=1.97%, ctx=1233, 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=179369: Sat Aug 22 05:44:27 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(6032KiB/49715msec) clat (msec): min=8, max=253, avg=53.50, stdev=44.02 lat (msec): min=8, max=253, avg=53.50, stdev=44.02 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 46], | 70.00th=[ 57], 80.00th=[ 77], 90.00th=[ 115], 95.00th=[ 150], | 99.00th=[ 224], 99.50th=[ 249], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 30, max= 349, per=26.01%, avg=125.12, stdev=74.21, samples=94 iops : min= 1, max= 21, avg= 7.00, stdev= 4.64, samples=94 write: IOPS=7, BW=126KiB/s (129kB/s)(6256KiB/49715msec); 0 zone resets clat (msec): min=17, max=324, avg=75.10, stdev=48.65 lat (msec): min=17, max=324, avg=75.11, stdev=48.65 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 29], 10.00th=[ 33], 20.00th=[ 39], | 30.00th=[ 44], 40.00th=[ 52], 50.00th=[ 60], 60.00th=[ 70], | 70.00th=[ 85], 80.00th=[ 106], 90.00th=[ 142], 95.00th=[ 182], | 99.00th=[ 264], 99.50th=[ 275], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 351, per=25.32%, avg=128.14, stdev=74.89, samples=96 iops : min= 1, max= 21, avg= 7.19, stdev= 4.70, samples=96 lat (msec) : 10=0.13%, 20=7.16%, 50=43.36%, 100=31.77%, 250=16.93% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=2.00%, ctx=1253, 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=482KiB/s (493kB/s), 117KiB/s-126KiB/s (120kB/s-129kB/s), io=23.4MiB (24.5MB), run=49206-49715msec WRITE: bw=507KiB/s (519kB/s), 122KiB/s-133KiB/s (124kB/s-136kB/s), io=24.6MiB (25.8MB), run=49206-49715msec 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=179383: Sat Aug 22 05:44:45 2026 read: IOPS=2, BW=2083KiB/s (2132kB/s)(7168KiB/3442msec) clat (msec): min=141, max=286, avg=204.70, stdev=48.50 lat (msec): min=141, max=286, avg=204.70, stdev=48.50 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 159], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 207], 60.00th=[ 220], | 70.00th=[ 220], 80.00th=[ 234], 90.00th=[ 288], 95.00th=[ 288], | 99.00th=[ 288], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 1896, max= 3185, per=58.96%, avg=2239.20, stdev=532.43, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 write: IOPS=1, BW=1488KiB/s (1523kB/s)(5120KiB/3442msec); 0 zone resets clat (msec): min=206, max=571, avg=373.68, stdev=155.10 lat (msec): min=206, max=571, avg=374.02, stdev=155.29 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 477], 80.00th=[ 477], 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= 1896, max= 4063, per=50.19%, avg=2669.00, stdev=1209.63, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 250=66.67%, 500=25.00%, 750=8.33% cpu : usr=0.03%, sys=18.28%, ctx=220, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179384: Sat Aug 22 05:44:45 2026 read: IOPS=0, BW=380KiB/s (389kB/s)(2048KiB/5391msec) clat (usec): min=779, max=210763, avg=105771.76, stdev=148481.10 lat (usec): min=781, max=210765, avg=105773.48, stdev=148481.67 clat percentiles (usec): | 1.00th=[ 783], 5.00th=[ 783], 10.00th=[ 783], 20.00th=[ 783], | 30.00th=[ 783], 40.00th=[ 783], 50.00th=[ 783], 60.00th=[210764], | 70.00th=[210764], 80.00th=[210764], 90.00th=[210764], 95.00th=[210764], | 99.00th=[210764], 99.50th=[210764], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 1530, max= 1841, per=44.38%, avg=1685.50, stdev=219.91, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1899KiB/s (1945kB/s)(10.0MiB/5391msec); 0 zone resets clat (msec): min=214, max=1315, avg=511.38, stdev=331.16 lat (msec): min=214, max=1315, avg=511.64, stdev=331.17 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 338], 50.00th=[ 347], 60.00th=[ 388], | 70.00th=[ 464], 80.00th=[ 609], 90.00th=[ 810], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 2019, max= 4096, per=56.34%, avg=2996.00, stdev=1061.48, samples=6 iops : min= 1, max= 4, avg= 2.33, stdev= 1.21, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.06%, sys=11.04%, ctx=169, 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=179386: Sat Aug 22 05:44:45 2026 read: IOPS=1, BW=1437KiB/s (1471kB/s)(6144KiB/4276msec) clat (usec): min=731, max=667654, avg=259625.12, stdev=234780.17 lat (usec): min=733, max=667656, avg=259626.47, stdev=234780.17 clat percentiles (usec): | 1.00th=[ 734], 5.00th=[ 734], 10.00th=[ 734], 20.00th=[119014], | 30.00th=[119014], 40.00th=[162530], 50.00th=[162530], 60.00th=[238027], | 70.00th=[371196], 80.00th=[371196], 90.00th=[666895], 95.00th=[666895], | 99.00th=[666895], 99.50th=[666895], 99.90th=[666895], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 1896, max= 4096, per=84.91%, avg=3225.00, stdev=1169.33, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1437KiB/s (1471kB/s)(6144KiB/4276msec); 0 zone resets clat (msec): min=354, max=529, avg=433.63, stdev=71.12 lat (msec): min=354, max=529, avg=433.72, stdev=71.11 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 451], | 70.00th=[ 502], 80.00th=[ 502], 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= 1695, max= 2048, per=36.61%, avg=1947.00, stdev=146.55, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=12.02%, ctx=216, 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=179389: Sat Aug 22 05:44:45 2026 read: IOPS=1, BW=1088KiB/s (1114kB/s)(5120KiB/4708msec) clat (usec): min=685, max=851525, avg=275054.11, stdev=347860.97 lat (usec): min=686, max=851526, avg=275055.36, stdev=347861.10 clat percentiles (usec): | 1.00th=[ 685], 5.00th=[ 685], 10.00th=[ 685], 20.00th=[ 685], | 30.00th=[ 2933], 40.00th=[ 2933], 50.00th=[229639], 60.00th=[229639], | 70.00th=[291505], 80.00th=[291505], 90.00th=[851444], 95.00th=[851444], | 99.00th=[851444], 99.50th=[851444], 99.90th=[851444], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 2048, max= 5525, per=99.70%, avg=3786.50, stdev=2458.61, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1523KiB/s (1559kB/s)(7168KiB/4708msec); 0 zone resets clat (msec): min=170, max=845, avg=467.29, stdev=231.46 lat (msec): min=170, max=847, avg=468.21, stdev=231.97 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 251], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 489], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 634], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1692, max= 2048, per=37.11%, avg=1973.40, stdev=157.48, samples=5 iops : min= 1, max= 2, avg= 1.60, stdev= 0.55, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=16.67%, 500=33.33%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=12.00%, ctx=131, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3799KiB/s (3890kB/s), 380KiB/s-2083KiB/s (389kB/s-2132kB/s), io=20.0MiB (20.0MB), run=3442-5391msec WRITE: bw=5318KiB/s (5446kB/s), 1437KiB/s-1899KiB/s (1471kB/s-1945kB/s), io=28.0MiB (29.4MB), run=3442-5391msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179385: Sat Aug 22 05:44:45 2026 read: IOPS=1, BW=1722KiB/s (1764kB/s)(7168KiB/4162msec) clat (msec): min=105, max=361, avg=207.49, stdev=109.39 lat (msec): min=105, max=361, avg=207.49, stdev=109.39 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 111], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 176], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 342], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1831, max= 3419, per=62.32%, avg=2295.25, stdev=752.61, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1230KiB/s (1260kB/s)(5120KiB/4162msec); 0 zone resets clat (msec): min=120, max=841, avg=511.21, stdev=318.57 lat (msec): min=120, max=841, avg=511.30, stdev=318.58 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 121], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1667, max= 4096, per=50.23%, avg=2590.00, stdev=1315.27, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=5.79%, ctx=95, 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=179387: Sat Aug 22 05:44:45 2026 read: IOPS=0, BW=368KiB/s (377kB/s)(2048KiB/5560msec) clat (msec): min=140, max=403, avg=271.67, stdev=185.88 lat (msec): min=140, max=403, avg=271.67, stdev=185.88 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1575, max= 2048, per=49.19%, avg=1811.50, stdev=334.46, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1842KiB/s (1886kB/s)(10.0MiB/5560msec); 0 zone resets clat (msec): min=131, max=1151, avg=494.38, stdev=377.86 lat (msec): min=131, max=1153, avg=494.75, stdev=378.25 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 157], | 30.00th=[ 163], 40.00th=[ 230], 50.00th=[ 418], 60.00th=[ 435], | 70.00th=[ 439], 80.00th=[ 726], 90.00th=[ 1099], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1667, max= 6107, per=57.03%, avg=2940.67, stdev=1737.40, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.60, samples=6 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 2000=16.67% cpu : usr=0.00%, sys=5.32%, ctx=126, 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=179388: Sat Aug 22 05:44:45 2026 read: IOPS=1, BW=1232KiB/s (1262kB/s)(6144KiB/4986msec) clat (msec): min=94, max=637, avg=311.84, stdev=240.80 lat (msec): min=94, max=637, avg=311.84, stdev=240.80 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 127], | 30.00th=[ 127], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 259], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 2048, max= 4096, per=92.16%, avg=3394.33, stdev=1166.31, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1232KiB/s (1262kB/s)(6144KiB/4986msec); 0 zone resets clat (msec): min=187, max=1072, avg=493.63, stdev=363.17 lat (msec): min=187, max=1072, avg=493.85, stdev=363.11 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 300], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 1667, max= 3908, per=46.29%, avg=2386.75, stdev=1026.50, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.06%, sys=4.75%, ctx=139, 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=179390: Sat Aug 22 05:44:45 2026 read: IOPS=0, BW=966KiB/s (989kB/s)(5120KiB/5300msec) clat (msec): min=76, max=674, avg=320.77, stdev=274.08 lat (msec): min=76, max=674, avg=320.77, stdev=274.08 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 132], 40.00th=[ 132], 50.00th=[ 165], 60.00th=[ 165], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 3335, max= 4096, per=100.00%, avg=3715.50, stdev=538.11, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1352KiB/s (1385kB/s)(7168KiB/5300msec); 0 zone resets clat (msec): min=133, max=1029, avg=481.02, stdev=302.03 lat (msec): min=133, max=1029, avg=481.15, stdev=302.01 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 243], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 460], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 617], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 1924, max= 4071, per=45.42%, avg=2342.00, stdev=848.51, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=33.33%, 2000=8.33% cpu : usr=0.04%, sys=6.21%, ctx=121, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3683KiB/s (3772kB/s), 368KiB/s-1722KiB/s (377kB/s-1764kB/s), io=20.0MiB (20.0MB), run=4162-5560msec WRITE: bw=5157KiB/s (5281kB/s), 1230KiB/s-1842KiB/s (1260kB/s-1886kB/s), io=28.0MiB (29.4MB), run=4162-5560msec 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=179397: Sat Aug 22 05:45:00 2026 read: IOPS=1, BW=6667KiB/s (6827kB/s)(12.0MiB/1843msec) clat (msec): min=286, max=736, avg=581.35, stdev=255.55 lat (msec): min=286, max=736, avg=581.35, stdev=255.55 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 6781, max= 8078, per=100.00%, avg=7429.50, stdev=917.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.05%, sys=7.22%, ctx=61, 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=179398: Sat Aug 22 05:45:00 2026 read: IOPS=0, BW=1750KiB/s (1792kB/s)(4096KiB/2340msec) clat (nsec): min=479308k, max=479308k, avg=479308179.00, stdev= 0.00 lat (nsec): min=479311k, max=479311k, avg=479311077.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3501KiB/s (3585kB/s)(8192KiB/2340msec); 0 zone resets clat (msec): min=851, max=910, avg=880.83, stdev=41.54 lat (msec): min=851, max=912, avg=882.17, stdev=42.79 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 911], | 70.00th=[ 911], 80.00th=[ 911], 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= 8078, max= 8078, per=73.66%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=6.28%, ctx=63, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179400: Sat Aug 22 05:45:00 2026 write: IOPS=1, BW=4112KiB/s (4211kB/s)(12.0MiB/2988msec); 0 zone resets clat (msec): min=381, max=1374, avg=952.63, stdev=513.34 lat (msec): min=382, max=1375, avg=954.65, stdev=513.15 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8031, max= 8175, per=73.89%, avg=8103.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.72%, ctx=56, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179402: Sat Aug 22 05:45:00 2026 write: IOPS=1, BW=5131KiB/s (5254kB/s)(12.0MiB/2395msec); 0 zone resets clat (msec): min=319, max=1098, avg=765.99, stdev=401.38 lat (msec): min=320, max=1098, avg=766.36, stdev=401.49 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7968, max= 8078, per=73.16%, avg=8023.00, stdev=77.78, 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=5.18%, ctx=43, 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=7002KiB/s (7170kB/s), 1750KiB/s-6667KiB/s (1792kB/s-6827kB/s), io=16.0MiB (16.8MB), run=1843-2340msec WRITE: bw=10.7MiB/s (11.2MB/s), 3501KiB/s-5131KiB/s (3585kB/s-5254kB/s), io=32.0MiB (33.6MB), run=2340-2988msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179399: Sat Aug 22 05:45:01 2026 read: IOPS=1, BW=4676KiB/s (4788kB/s)(12.0MiB/2628msec) clat (msec): min=693, max=911, avg=774.16, stdev=119.18 lat (msec): min=693, max=911, avg=774.17, stdev=119.18 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 911], 80.00th=[ 911], 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= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=13.89%, ctx=359, 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=179401: Sat Aug 22 05:45:01 2026 read: IOPS=0, BW=1272KiB/s (1303kB/s)(4096KiB/3219msec) clat (nsec): min=727890k, max=727890k, avg=727890167.00, stdev= 0.00 lat (nsec): min=727893k, max=727893k, avg=727892650.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] 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=2545KiB/s (2606kB/s)(8192KiB/3219msec); 0 zone resets clat (msec): min=930, max=1278, avg=1104.46, stdev=245.99 lat (msec): min=931, max=1278, avg=1105.18, stdev=245.71 clat percentiles (msec): | 1.00th=[ 927], 5.00th=[ 927], 10.00th=[ 927], 20.00th=[ 927], | 30.00th=[ 927], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8159, max= 8159, per=91.13%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.13%, ctx=71, 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=179403: Sat Aug 22 05:45:01 2026 write: IOPS=0, BW=3357KiB/s (3438kB/s)(12.0MiB/3660msec); 0 zone resets clat (msec): min=217, max=1912, avg=1173.72, stdev=868.36 lat (msec): min=217, max=1915, avg=1174.84, stdev=869.28 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1921], 80.00th=[ 1921], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 8159, max= 8175, per=91.22%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.01%, ctx=52, 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=179404: Sat Aug 22 05:45:01 2026 write: IOPS=0, BW=3800KiB/s (3891kB/s)(12.0MiB/3234msec); 0 zone resets clat (msec): min=199, max=2069, avg=979.78, stdev=972.56 lat (msec): min=201, max=2070, avg=980.91, stdev=972.60 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 2072], 80.00th=[ 2072], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 8126, max= 8192, per=91.13%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=4.52%, ctx=75, 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=5090KiB/s (5212kB/s), 1272KiB/s-4676KiB/s (1303kB/s-4788kB/s), io=16.0MiB (16.8MB), run=2628-3219msec WRITE: bw=8953KiB/s (9168kB/s), 2545KiB/s-3800KiB/s (2606kB/s-3891kB/s), io=32.0MiB (33.6MB), run=3219-3660msec