== sanity test 398b: DIO and buffer IO race ============== 04:55:43 (1785401743) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 11.0993 s, 4.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=177690: Thu Jul 30 04:59:05 2026 read: IOPS=8, BW=35.1KiB/s (35.0kB/s)(5992KiB/170648msec) clat (usec): min=28, max=1786.1k, avg=63020.45, stdev=61352.82 lat (usec): min=28, max=1786.1k, avg=63021.46, stdev=61352.83 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 12387], 10.00th=[ 21365], | 20.00th=[ 30278], 30.00th=[ 37487], 40.00th=[ 43779], | 50.00th=[ 52167], 60.00th=[ 62129], 70.00th=[ 73925], | 80.00th=[ 88605], 90.00th=[ 117965], 95.00th=[ 141558], | 99.00th=[ 208667], 99.50th=[ 248513], 99.90th=[ 371196], | 99.95th=[1786774], 99.99th=[1786774] bw ( KiB/s): min= 7, max= 87, per=25.38%, avg=35.28, stdev=16.69, samples=328 iops : min= 1, max= 21, avg= 8.18, stdev= 4.22, samples=328 write: IOPS=9, BW=36.9KiB/s (37.8kB/s)(6296KiB/170648msec); 0 zone resets clat (usec): min=973, max=489586, avg=48008.79, stdev=50907.62 lat (usec): min=974, max=489588, avg=48011.04, stdev=50906.85 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1221], 10.00th=[ 1336], 20.00th=[ 4752], | 30.00th=[ 10421], 40.00th=[ 21627], 50.00th=[ 33424], 60.00th=[ 48497], | 70.00th=[ 63177], 80.00th=[ 81265], 90.00th=[115868], 95.00th=[147850], | 99.00th=[214959], 99.50th=[235930], 99.90th=[346031], 99.95th=[488637], | 99.99th=[488637] bw ( KiB/s): min= 7, max= 103, per=25.56%, avg=37.07, stdev=18.00, samples=328 iops : min= 1, max= 25, avg= 8.62, stdev= 4.52, samples=328 lat (usec) : 50=0.55%, 100=1.30%, 250=0.03%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=7.39%, 4=2.02%, 10=5.92%, 20=6.77%, 50=30.37% lat (msec) : 100=30.70%, 250=14.36%, 500=0.42%, 2000=0.03% cpu : usr=0.05%, sys=3.86%, ctx=6055, 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=177691: Thu Jul 30 04:59:05 2026 read: IOPS=8, BW=34.5KiB/s (35.3kB/s)(5940KiB/172357msec) clat (usec): min=41, max=576153, avg=63555.47, stdev=43518.76 lat (usec): min=41, max=576155, avg=63556.51, stdev=43518.79 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 14615], 10.00th=[ 23200], 20.00th=[ 30802], | 30.00th=[ 39060], 40.00th=[ 46924], 50.00th=[ 56361], 60.00th=[ 64750], | 70.00th=[ 76022], 80.00th=[ 88605], 90.00th=[112722], 95.00th=[139461], | 99.00th=[217056], 99.50th=[252707], 99.90th=[337642], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 5, max= 110, per=24.74%, avg=34.39, stdev=15.49, samples=332 iops : min= 1, max= 27, avg= 7.96, stdev= 3.91, samples=332 write: IOPS=9, BW=36.8KiB/s (37.7kB/s)(6348KiB/172357msec); 0 zone resets clat (usec): min=1046, max=1745.7k, avg=48693.33, stdev=67086.51 lat (usec): min=1047, max=1745.7k, avg=48695.88, stdev=67086.44 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1221], 10.00th=[ 1319], | 20.00th=[ 4293], 30.00th=[ 10421], 40.00th=[ 21627], | 50.00th=[ 33162], 60.00th=[ 44827], 70.00th=[ 60031], | 80.00th=[ 81265], 90.00th=[ 115868], 95.00th=[ 156238], | 99.00th=[ 225444], 99.50th=[ 278922], 99.90th=[ 467665], | 99.95th=[1753220], 99.99th=[1753220] bw ( KiB/s): min= 5, max= 128, per=25.42%, avg=36.86, stdev=19.10, samples=331 iops : min= 1, max= 32, avg= 8.57, stdev= 4.83, samples=331 lat (usec) : 50=0.55%, 100=1.01%, 250=0.10% lat (msec) : 2=7.75%, 4=2.41%, 10=5.18%, 20=6.90%, 50=29.79% lat (msec) : 100=32.42%, 250=13.25%, 500=0.59%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=3.89%, ctx=5984, 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=177693: Thu Jul 30 04:59:05 2026 read: IOPS=8, BW=35.1KiB/s (35.9kB/s)(6028KiB/171857msec) clat (usec): min=36, max=418273, avg=62353.82, stdev=44779.03 lat (usec): min=37, max=418275, avg=62362.35, stdev=44809.06 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 1450], 10.00th=[ 21103], 20.00th=[ 30802], | 30.00th=[ 38011], 40.00th=[ 45876], 50.00th=[ 53740], 60.00th=[ 63177], | 70.00th=[ 73925], 80.00th=[ 86508], 90.00th=[110625], 95.00th=[141558], | 99.00th=[233833], 99.50th=[287310], 99.90th=[379585], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 88, per=25.47%, avg=35.40, stdev=15.75, samples=328 iops : min= 1, max= 22, avg= 8.21, stdev= 3.97, samples=328 write: IOPS=9, BW=36.4KiB/s (37.3kB/s)(6260KiB/171857msec); 0 zone resets clat (usec): min=1062, max=1923.9k, avg=49279.30, stdev=71950.09 lat (usec): min=1064, max=1923.9k, avg=49281.51, stdev=71950.49 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1254], 10.00th=[ 1352], | 20.00th=[ 4686], 30.00th=[ 8586], 40.00th=[ 20055], | 50.00th=[ 33817], 60.00th=[ 44303], 70.00th=[ 61604], | 80.00th=[ 83362], 90.00th=[ 117965], 95.00th=[ 152044], | 99.00th=[ 233833], 99.50th=[ 283116], 99.90th=[ 624952], | 99.95th=[1920992], 99.99th=[1920992] bw ( KiB/s): min= 7, max= 111, per=25.42%, avg=36.86, stdev=19.36, samples=327 iops : min= 1, max= 27, avg= 8.57, stdev= 4.90, samples=327 lat (usec) : 50=0.75%, 100=1.60%, 250=0.07%, 500=0.03% lat (msec) : 2=7.32%, 4=2.12%, 10=6.74%, 20=6.09%, 50=30.18% lat (msec) : 100=31.18%, 250=13.18%, 500=0.68%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=3.91%, ctx=6002, 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=177695: Thu Jul 30 04:59:05 2026 read: IOPS=8, BW=35.7KiB/s (36.5kB/s)(6052KiB/169567msec) clat (usec): min=35, max=587218, avg=61039.69, stdev=42924.10 lat (usec): min=35, max=587219, avg=61040.71, stdev=42924.11 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 71], 10.00th=[ 20579], 20.00th=[ 29492], | 30.00th=[ 38011], 40.00th=[ 45876], 50.00th=[ 54264], 60.00th=[ 62129], | 70.00th=[ 73925], 80.00th=[ 88605], 90.00th=[109577], 95.00th=[135267], | 99.00th=[200279], 99.50th=[252707], 99.90th=[337642], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 5, max= 80, per=26.04%, avg=36.19, stdev=15.84, samples=323 iops : min= 1, max= 20, avg= 8.41, stdev= 4.01, samples=323 write: IOPS=9, BW=36.8KiB/s (37.7kB/s)(6236KiB/169567msec); 0 zone resets clat (usec): min=839, max=1938.5k, avg=49054.86, stdev=69623.40 lat (usec): min=840, max=1938.5k, avg=49059.70, stdev=69625.03 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1221], 10.00th=[ 1352], | 20.00th=[ 5014], 30.00th=[ 10552], 40.00th=[ 20579], | 50.00th=[ 33817], 60.00th=[ 46400], 70.00th=[ 60556], | 80.00th=[ 83362], 90.00th=[ 117965], 95.00th=[ 145753], | 99.00th=[ 217056], 99.50th=[ 265290], 99.90th=[ 333448], | 99.95th=[1937769], 99.99th=[1937769] bw ( KiB/s): min= 5, max= 116, per=25.55%, avg=37.05, stdev=18.79, samples=325 iops : min= 1, max= 29, avg= 8.62, stdev= 4.72, samples=325 lat (usec) : 50=0.72%, 100=2.08%, 250=0.13%, 1000=0.07% lat (msec) : 2=6.80%, 4=1.79%, 10=6.18%, 20=7.13%, 50=29.69% lat (msec) : 100=31.22%, 250=13.54%, 500=0.59%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=3.70%, ctx=5927, 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=139KiB/s (143kB/s), 34.5KiB/s-35.7KiB/s (35.3kB/s-36.5kB/s), io=23.4MiB (24.6MB), run=169567-172357msec WRITE: bw=146KiB/s (149kB/s), 36.4KiB/s-36.9KiB/s (37.3kB/s-37.8kB/s), io=24.6MiB (25.7MB), run=169567-172357msec rand-rw: (groupid=0, jobs=1): err= 0: pid=177688: Thu Jul 30 05:00:02 2026 read: IOPS=6, BW=26.2KiB/s (26.8kB/s)(5992KiB/229131msec) clat (msec): min=4, max=1846, avg=62.70, stdev=73.01 lat (msec): min=4, max=1846, avg=62.70, stdev=73.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 90], 90.00th=[ 136], 95.00th=[ 174], | 99.00th=[ 288], 99.50th=[ 321], 99.90th=[ 676], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 95, per=26.36%, avg=27.41, stdev=18.96, samples=420 iops : min= 1, max= 23, avg= 6.16, stdev= 4.79, samples=420 write: IOPS=6, BW=27.5KiB/s (28.1kB/s)(6296KiB/229131msec); 0 zone resets clat (msec): min=10, max=675, avg=85.49, stdev=65.03 lat (msec): min=10, max=675, avg=85.50, stdev=65.03 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 30], 20.00th=[ 39], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 66], 60.00th=[ 81], | 70.00th=[ 100], 80.00th=[ 127], 90.00th=[ 163], 95.00th=[ 211], | 99.00th=[ 309], 99.50th=[ 397], 99.90th=[ 600], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 95, per=25.51%, avg=27.81, stdev=18.24, samples=434 iops : min= 1, max= 23, avg= 6.26, stdev= 4.61, samples=434 lat (msec) : 10=1.37%, 20=7.75%, 50=37.04%, 100=30.47%, 250=21.22% lat (msec) : 500=1.99%, 750=0.13%, 2000=0.03% cpu : usr=0.03%, sys=1.47%, ctx=4799, 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=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=177689: Thu Jul 30 05:00:02 2026 read: IOPS=6, BW=26.1KiB/s (26.7kB/s)(5940KiB/227494msec) clat (msec): min=5, max=1852, avg=58.81, stdev=69.51 lat (msec): min=5, max=1852, avg=58.82, stdev=69.51 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 62], 80.00th=[ 86], 90.00th=[ 123], 95.00th=[ 159], | 99.00th=[ 245], 99.50th=[ 317], 99.90th=[ 659], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 4, max= 103, per=26.46%, avg=27.52, stdev=19.17, samples=415 iops : min= 1, max= 25, avg= 6.18, stdev= 4.84, samples=415 write: IOPS=6, BW=27.9KiB/s (28.6kB/s)(6348KiB/227494msec); 0 zone resets clat (msec): min=6, max=716, avg=87.87, stdev=66.46 lat (msec): min=6, max=716, avg=87.87, stdev=66.46 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 30], 20.00th=[ 39], | 30.00th=[ 47], 40.00th=[ 57], 50.00th=[ 68], 60.00th=[ 84], | 70.00th=[ 104], 80.00th=[ 131], 90.00th=[ 169], 95.00th=[ 205], | 99.00th=[ 342], 99.50th=[ 422], 99.90th=[ 625], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 103, per=25.87%, avg=28.20, stdev=17.71, samples=433 iops : min= 1, max= 25, avg= 6.36, stdev= 4.47, samples=433 lat (msec) : 10=0.72%, 20=8.46%, 50=36.75%, 100=30.53%, 250=21.91% lat (msec) : 500=1.46%, 750=0.13%, 2000=0.03% cpu : usr=0.05%, sys=1.49%, ctx=4751, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=177692: Thu Jul 30 05:00:02 2026 read: IOPS=6, BW=26.4KiB/s (27.0kB/s)(6028KiB/228391msec) clat (msec): min=5, max=503, avg=62.37, stdev=58.17 lat (msec): min=5, max=503, avg=62.37, stdev=58.17 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 24], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 51], | 70.00th=[ 66], 80.00th=[ 91], 90.00th=[ 138], 95.00th=[ 188], | 99.00th=[ 292], 99.50th=[ 317], 99.90th=[ 456], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 4, max= 117, per=26.35%, avg=27.40, stdev=18.94, samples=421 iops : min= 1, max= 29, avg= 6.16, stdev= 4.79, samples=421 write: IOPS=6, BW=27.4KiB/s (28.1kB/s)(6260KiB/228391msec); 0 zone resets clat (msec): min=7, max=1907, avg=85.46, stdev=79.17 lat (msec): min=7, max=1907, avg=85.46, stdev=79.17 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 37], | 30.00th=[ 45], 40.00th=[ 54], 50.00th=[ 65], 60.00th=[ 79], | 70.00th=[ 97], 80.00th=[ 125], 90.00th=[ 163], 95.00th=[ 209], | 99.00th=[ 338], 99.50th=[ 409], 99.90th=[ 735], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 7, max= 95, per=25.70%, avg=28.01, stdev=18.45, samples=427 iops : min= 1, max= 23, avg= 6.32, stdev= 4.66, samples=427 lat (msec) : 10=1.01%, 20=7.42%, 50=38.70%, 100=30.18%, 250=20.64% lat (msec) : 500=1.92%, 750=0.10%, 2000=0.03% cpu : usr=0.03%, sys=1.52%, ctx=4836, 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=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=177694: Thu Jul 30 05:00:02 2026 read: IOPS=6, BW=26.4KiB/s (27.1kB/s)(6052KiB/229051msec) clat (msec): min=5, max=503, avg=58.79, stdev=55.02 lat (msec): min=5, max=503, avg=58.79, stdev=55.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 61], 80.00th=[ 85], 90.00th=[ 138], 95.00th=[ 176], | 99.00th=[ 266], 99.50th=[ 305], 99.90th=[ 439], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 103, per=27.14%, avg=28.23, stdev=19.58, samples=412 iops : min= 1, max= 25, avg= 6.36, stdev= 4.94, samples=412 write: IOPS=6, BW=27.2KiB/s (27.9kB/s)(6236KiB/229051msec); 0 zone resets clat (msec): min=11, max=1931, avg=89.45, stdev=79.54 lat (msec): min=11, max=1931, avg=89.45, stdev=79.54 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 40], | 30.00th=[ 48], 40.00th=[ 56], 50.00th=[ 68], 60.00th=[ 83], | 70.00th=[ 102], 80.00th=[ 131], 90.00th=[ 174], 95.00th=[ 213], | 99.00th=[ 334], 99.50th=[ 372], 99.90th=[ 443], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 87, per=25.19%, avg=27.46, stdev=17.69, samples=436 iops : min= 1, max= 21, avg= 6.18, stdev= 4.47, samples=436 lat (msec) : 10=1.20%, 20=8.17%, 50=37.76%, 100=29.39%, 250=21.26% lat (msec) : 500=2.15%, 750=0.03%, 2000=0.03% cpu : usr=0.03%, sys=1.52%, ctx=4826, 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=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=105KiB/s (107kB/s), 26.1KiB/s-26.4KiB/s (26.7kB/s-27.1kB/s), io=23.4MiB (24.6MB), run=227494-229131msec WRITE: bw=110KiB/s (112kB/s), 27.2KiB/s-27.9KiB/s (27.9kB/s-28.6kB/s), io=24.6MiB (25.7MB), run=227494-229131msec 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=177748: Thu Jul 30 05:00:53 2026 read: IOPS=9, BW=156KiB/s (160kB/s)(5920KiB/37894msec) clat (usec): min=34, max=274802, avg=54807.26, stdev=39260.36 lat (usec): min=34, max=274802, avg=54810.28, stdev=39262.37 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 97], 20.00th=[ 27395], | 30.00th=[ 34341], 40.00th=[ 40633], 50.00th=[ 47973], 60.00th=[ 56361], | 70.00th=[ 66847], 80.00th=[ 80217], 90.00th=[ 99091], 95.00th=[121111], | 99.00th=[196084], 99.50th=[229639], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 62, max= 317, per=24.73%, avg=156.27, stdev=55.11, samples=74 iops : min= 3, max= 19, avg= 8.97, stdev= 3.50, samples=74 write: IOPS=10, BW=168KiB/s (172kB/s)(6368KiB/37894msec); 0 zone resets clat (usec): min=1394, max=196367, avg=43739.26, stdev=40196.43 lat (usec): min=1395, max=196369, avg=43740.78, stdev=40196.50 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1680], 10.00th=[ 2008], 20.00th=[ 7570], | 30.00th=[ 13042], 40.00th=[ 22938], 50.00th=[ 34866], 60.00th=[ 43779], | 70.00th=[ 55837], 80.00th=[ 72877], 90.00th=[103285], 95.00th=[128451], | 99.00th=[162530], 99.50th=[187696], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 31, max= 344, per=25.21%, avg=167.65, stdev=69.08, samples=74 iops : min= 1, max= 21, avg= 9.70, stdev= 4.37, samples=74 lat (usec) : 50=0.78%, 100=4.04%, 250=0.13%, 500=0.13% lat (msec) : 2=5.08%, 4=1.69%, 10=6.64%, 20=7.42%, 50=33.46% lat (msec) : 100=30.08%, 250=10.42%, 500=0.13% cpu : usr=0.05%, sys=4.75%, ctx=1598, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=177749: Thu Jul 30 05:00:53 2026 read: IOPS=9, BW=157KiB/s (161kB/s)(5744KiB/36550msec) clat (usec): min=35, max=212606, avg=55092.11, stdev=36637.41 lat (usec): min=35, max=212606, avg=55093.02, stdev=36637.42 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 17695], 20.00th=[ 28181], | 30.00th=[ 35914], 40.00th=[ 43254], 50.00th=[ 50070], 60.00th=[ 57934], | 70.00th=[ 66847], 80.00th=[ 76022], 90.00th=[ 98042], 95.00th=[119014], | 99.00th=[185598], 99.50th=[212861], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 380, per=24.75%, avg=156.41, stdev=66.08, samples=71 iops : min= 1, max= 23, avg= 9.00, stdev= 4.15, samples=71 write: IOPS=11, BW=179KiB/s (183kB/s)(6544KiB/36550msec); 0 zone resets clat (usec): min=1330, max=209684, avg=40774.18, stdev=38648.85 lat (usec): min=1332, max=209687, avg=40776.25, stdev=38648.70 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1827], 10.00th=[ 3589], 20.00th=[ 7111], | 30.00th=[ 12125], 40.00th=[ 21890], 50.00th=[ 30540], 60.00th=[ 39584], | 70.00th=[ 51119], 80.00th=[ 70779], 90.00th=[ 94897], 95.00th=[117965], | 99.00th=[170918], 99.50th=[177210], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 63, max= 373, per=27.05%, avg=179.87, stdev=73.24, samples=70 iops : min= 3, max= 23, avg=10.47, stdev= 4.68, samples=70 lat (usec) : 50=0.91%, 100=3.26% lat (msec) : 2=3.78%, 4=1.95%, 10=7.68%, 20=8.07%, 50=34.11% lat (msec) : 100=31.51%, 250=8.72% cpu : usr=0.08%, sys=4.86%, ctx=1570, 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=177750: Thu Jul 30 05:00:53 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(6256KiB/37651msec) clat (usec): min=31, max=270870, avg=57338.91, stdev=40658.35 lat (usec): min=31, max=270871, avg=57339.82, stdev=40658.36 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 72], 20.00th=[ 30016], | 30.00th=[ 38011], 40.00th=[ 45876], 50.00th=[ 51119], 60.00th=[ 59507], | 70.00th=[ 67634], 80.00th=[ 82314], 90.00th=[ 95945], 95.00th=[120062], | 99.00th=[244319], 99.50th=[265290], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 342, per=26.25%, avg=165.90, stdev=59.66, samples=73 iops : min= 1, max= 21, avg= 9.59, stdev= 3.78, samples=73 write: IOPS=10, BW=160KiB/s (164kB/s)(6032KiB/37651msec); 0 zone resets clat (usec): min=1395, max=214588, avg=39945.58, stdev=39553.69 lat (usec): min=1396, max=214592, avg=39947.30, stdev=39553.71 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1876], 10.00th=[ 2802], 20.00th=[ 6915], | 30.00th=[ 11863], 40.00th=[ 16909], 50.00th=[ 28181], 60.00th=[ 39060], | 70.00th=[ 51119], 80.00th=[ 66847], 90.00th=[ 94897], 95.00th=[115868], | 99.00th=[183501], 99.50th=[210764], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 30, max= 381, per=23.69%, avg=157.55, stdev=72.26, samples=73 iops : min= 1, max= 23, avg= 9.04, stdev= 4.57, samples=73 lat (usec) : 50=0.52%, 100=4.82%, 250=0.13% lat (msec) : 2=3.39%, 4=2.86%, 10=7.03%, 20=8.85%, 50=30.08% lat (msec) : 100=33.46%, 250=8.59%, 500=0.26% cpu : usr=0.06%, sys=4.53%, ctx=1568, 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=177752: Thu Jul 30 05:00:53 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(6032KiB/36909msec) clat (usec): min=43, max=203805, avg=52790.03, stdev=35192.81 lat (usec): min=43, max=203805, avg=52790.96, stdev=35192.83 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 54], 10.00th=[ 64], 20.00th=[ 27132], | 30.00th=[ 36439], 40.00th=[ 43254], 50.00th=[ 49546], 60.00th=[ 55837], | 70.00th=[ 63177], 80.00th=[ 76022], 90.00th=[ 95945], 95.00th=[109577], | 99.00th=[183501], 99.50th=[187696], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 324, per=25.64%, avg=162.03, stdev=55.94, samples=72 iops : min= 1, max= 20, avg= 9.33, stdev= 3.51, samples=72 write: IOPS=10, BW=169KiB/s (174kB/s)(6256KiB/36909msec); 0 zone resets clat (usec): min=1232, max=214991, avg=43075.38, stdev=41939.51 lat (usec): min=1234, max=214993, avg=43077.26, stdev=41939.45 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1762], 10.00th=[ 3490], 20.00th=[ 8029], | 30.00th=[ 14091], 40.00th=[ 22414], 50.00th=[ 32113], 60.00th=[ 40109], | 70.00th=[ 50070], 80.00th=[ 71828], 90.00th=[105382], 95.00th=[129500], | 99.00th=[185598], 99.50th=[198181], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 412, per=25.58%, avg=170.14, stdev=84.00, samples=72 iops : min= 1, max= 25, avg= 9.85, stdev= 5.30, samples=72 lat (usec) : 50=1.43%, 100=4.43%, 250=0.13%, 500=0.13% lat (msec) : 2=4.04%, 4=1.82%, 10=6.38%, 20=7.03%, 50=35.03% lat (msec) : 100=29.95%, 250=9.64% cpu : usr=0.02%, sys=4.39%, ctx=1514, 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=632KiB/s (647kB/s), 156KiB/s-166KiB/s (160kB/s-170kB/s), io=23.4MiB (24.5MB), run=36550-37894msec WRITE: bw=665KiB/s (681kB/s), 160KiB/s-179KiB/s (164kB/s-183kB/s), io=24.6MiB (25.8MB), run=36550-37894msec rand-rw: (groupid=0, jobs=1): err= 0: pid=177753: Thu Jul 30 05:01:11 2026 read: IOPS=6, BW=106KiB/s (108kB/s)(5920KiB/55987msec) clat (msec): min=7, max=246, avg=61.62, stdev=42.05 lat (msec): min=7, max=246, avg=61.62, stdev=42.05 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 70], 80.00th=[ 87], 90.00th=[ 121], 95.00th=[ 148], | 99.00th=[ 203], 99.50th=[ 224], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 30, max= 286, per=25.45%, avg=108.15, stdev=60.07, samples=106 iops : min= 1, max= 17, avg= 5.96, stdev= 3.80, samples=106 write: IOPS=7, BW=114KiB/s (116kB/s)(6368KiB/55987msec); 0 zone resets clat (msec): min=16, max=277, avg=82.59, stdev=47.31 lat (msec): min=16, max=277, avg=82.60, stdev=47.30 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 31], 10.00th=[ 36], 20.00th=[ 46], | 30.00th=[ 52], 40.00th=[ 60], 50.00th=[ 68], 60.00th=[ 81], | 70.00th=[ 99], 80.00th=[ 117], 90.00th=[ 150], 95.00th=[ 176], | 99.00th=[ 245], 99.50th=[ 275], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 256, per=25.93%, avg=116.18, stdev=51.34, samples=107 iops : min= 1, max= 16, avg= 6.48, stdev= 3.31, samples=107 lat (msec) : 10=0.13%, 20=3.26%, 50=35.29%, 100=38.54%, 250=22.40% lat (msec) : 500=0.39% cpu : usr=0.03%, sys=1.64%, ctx=1204, 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=177754: Thu Jul 30 05:01:11 2026 read: IOPS=6, BW=102KiB/s (105kB/s)(5744KiB/56228msec) clat (msec): min=7, max=248, avg=60.73, stdev=42.93 lat (msec): min=7, max=248, avg=60.73, stdev=42.93 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 22], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 72], 80.00th=[ 89], 90.00th=[ 125], 95.00th=[ 150], | 99.00th=[ 209], 99.50th=[ 224], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 22, max= 286, per=24.57%, avg=104.40, stdev=60.13, samples=107 iops : min= 1, max= 17, avg= 5.73, stdev= 3.78, samples=107 write: IOPS=7, BW=116KiB/s (119kB/s)(6544KiB/56228msec); 0 zone resets clat (msec): min=14, max=381, avg=83.51, stdev=48.89 lat (msec): min=14, max=381, avg=83.52, stdev=48.90 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 29], 10.00th=[ 36], 20.00th=[ 44], | 30.00th=[ 54], 40.00th=[ 61], 50.00th=[ 72], 60.00th=[ 86], | 70.00th=[ 101], 80.00th=[ 116], 90.00th=[ 146], 95.00th=[ 176], | 99.00th=[ 241], 99.50th=[ 268], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 31, max= 256, per=25.96%, avg=116.29, stdev=54.29, samples=109 iops : min= 1, max= 16, avg= 6.49, stdev= 3.50, samples=109 lat (msec) : 10=0.39%, 20=3.78%, 50=35.55%, 100=37.11%, 250=22.79% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.48%, ctx=1166, 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=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=177755: Thu Jul 30 05:01:11 2026 read: IOPS=6, BW=112KiB/s (114kB/s)(6256KiB/56074msec) clat (msec): min=10, max=258, avg=61.25, stdev=43.81 lat (msec): min=10, max=258, avg=61.26, stdev=43.81 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 57], | 70.00th=[ 69], 80.00th=[ 86], 90.00th=[ 125], 95.00th=[ 157], | 99.00th=[ 213], 99.50th=[ 239], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 318, per=27.00%, avg=114.74, stdev=63.30, samples=107 iops : min= 1, max= 19, avg= 6.39, stdev= 4.05, samples=107 write: IOPS=6, BW=108KiB/s (110kB/s)(6032KiB/56074msec); 0 zone resets clat (msec): min=14, max=297, avg=84.95, stdev=49.26 lat (msec): min=14, max=297, avg=84.95, stdev=49.26 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 27], 10.00th=[ 33], 20.00th=[ 45], | 30.00th=[ 53], 40.00th=[ 64], 50.00th=[ 74], 60.00th=[ 87], | 70.00th=[ 101], 80.00th=[ 116], 90.00th=[ 155], 95.00th=[ 190], | 99.00th=[ 239], 99.50th=[ 264], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 30, max= 318, per=24.09%, avg=107.94, stdev=52.98, samples=109 iops : min= 1, max= 19, avg= 5.95, stdev= 3.39, samples=109 lat (msec) : 20=4.69%, 50=35.68%, 100=37.24%, 250=21.88%, 500=0.52% cpu : usr=0.04%, sys=1.62%, ctx=1229, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=177756: Thu Jul 30 05:01:11 2026 read: IOPS=6, BW=108KiB/s (111kB/s)(6032KiB/55845msec) clat (msec): min=8, max=236, avg=59.86, stdev=40.19 lat (msec): min=8, max=236, avg=59.86, stdev=40.19 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 17], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 48], 60.00th=[ 57], | 70.00th=[ 67], 80.00th=[ 86], 90.00th=[ 110], 95.00th=[ 140], | 99.00th=[ 211], 99.50th=[ 228], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 31, max= 254, per=25.82%, avg=109.75, stdev=54.05, samples=107 iops : min= 1, max= 15, avg= 6.07, stdev= 3.43, samples=107 write: IOPS=7, BW=112KiB/s (115kB/s)(6256KiB/55845msec); 0 zone resets clat (msec): min=17, max=395, avg=84.53, stdev=51.29 lat (msec): min=17, max=395, avg=84.53, stdev=51.29 clat percentiles (msec): | 1.00th=[ 25], 5.00th=[ 31], 10.00th=[ 37], 20.00th=[ 46], | 30.00th=[ 54], 40.00th=[ 62], 50.00th=[ 69], 60.00th=[ 85], | 70.00th=[ 99], 80.00th=[ 114], 90.00th=[ 146], 95.00th=[ 180], | 99.00th=[ 292], 99.50th=[ 351], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 31, max= 318, per=25.12%, avg=112.56, stdev=54.50, samples=109 iops : min= 1, max= 19, avg= 6.25, stdev= 3.49, samples=109 lat (msec) : 10=0.39%, 20=3.52%, 50=35.94%, 100=38.54%, 250=20.83% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.59%, ctx=1196, 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=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=426KiB/s (436kB/s), 102KiB/s-112KiB/s (105kB/s-114kB/s), io=23.4MiB (24.5MB), run=55845-56228msec WRITE: bw=448KiB/s (459kB/s), 108KiB/s-116KiB/s (110kB/s-119kB/s), io=24.6MiB (25.8MB), run=55845-56228msec 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=177783: Thu Jul 30 05:01:37 2026 read: IOPS=0, BW=827KiB/s (847kB/s)(7168KiB/8664msec) clat (msec): min=211, max=488, avg=324.30, stdev=87.05 lat (msec): min=211, max=488, avg=324.30, stdev=87.05 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 268], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 309], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 355], 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= 1501, max= 2043, per=81.24%, avg=1919.67, stdev=208.98, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=591KiB/s (605kB/s)(5120KiB/8664msec); 0 zone resets clat (msec): min=220, max=4305, avg=1216.48, stdev=1735.20 lat (msec): min=220, max=4305, avg=1216.54, stdev=1735.20 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 1910, max= 4055, per=80.67%, avg=2669.33, stdev=1201.86, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=16.67%, 500=66.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.44%, ctx=189, 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=177785: Thu Jul 30 05:01:37 2026 read: IOPS=0, BW=277KiB/s (284kB/s)(2048KiB/7384msec) clat (usec): min=1522, max=383732, avg=192627.55, stdev=270263.52 lat (usec): min=1523, max=383735, avg=192629.37, stdev=270264.27 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1516], 10.00th=[ 1516], 20.00th=[ 1516], | 30.00th=[ 1516], 40.00th=[ 1516], 50.00th=[ 1516], 60.00th=[383779], | 70.00th=[383779], 80.00th=[383779], 90.00th=[383779], 95.00th=[383779], | 99.00th=[383779], 99.50th=[383779], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 1420, max= 2019, per=72.77%, avg=1719.50, stdev=423.56, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1387KiB/s (1420kB/s)(10.0MiB/7384msec); 0 zone resets clat (msec): min=56, max=2846, avg=672.64, stdev=840.81 lat (msec): min=56, max=2846, avg=672.73, stdev=840.81 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 91], | 30.00th=[ 176], 40.00th=[ 236], 50.00th=[ 376], 60.00th=[ 418], | 70.00th=[ 447], 80.00th=[ 1020], 90.00th=[ 1070], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 1906, max= 6131, per=90.70%, avg=3001.17, stdev=1730.40, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 2=8.33%, 100=16.67%, 250=16.67%, 500=33.33%, 2000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=6.19%, ctx=120, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=177787: Thu Jul 30 05:01:37 2026 read: IOPS=0, BW=763KiB/s (781kB/s)(6144KiB/8056msec) clat (usec): min=398, max=3758.2k, avg=629396.83, stdev=1532794.91 lat (usec): min=399, max=3758.2k, avg=629398.24, stdev=1532794.96 clat percentiles (usec): | 1.00th=[ 400], 5.00th=[ 400], 10.00th=[ 400], | 20.00th=[ 449], 30.00th=[ 449], 40.00th=[ 2114], | 50.00th=[ 2114], 60.00th=[ 4686], 70.00th=[ 10552], | 80.00th=[ 10552], 90.00th=[3774874], 95.00th=[3774874], | 99.00th=[3774874], 99.50th=[3774874], 99.90th=[3774874], | 99.95th=[3774874], 99.99th=[3774874] bw ( KiB/s): min= 3820, max= 6095, per=100.00%, avg=4957.50, stdev=1608.67, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=0, BW=763KiB/s (781kB/s)(6144KiB/8056msec); 0 zone resets clat (msec): min=187, max=1577, avg=628.76, stdev=521.43 lat (msec): min=187, max=1577, avg=629.62, stdev=521.88 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 447], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 2027, max= 3820, per=74.95%, avg=2480.25, stdev=893.19, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=16.67% lat (msec) : 4=8.33%, 10=8.33%, 20=8.33%, 250=8.33%, 500=25.00% lat (msec) : 1000=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.79%, ctx=449, 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=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=177789: Thu Jul 30 05:01:37 2026 read: IOPS=1, BW=1139KiB/s (1166kB/s)(5120KiB/4495msec) clat (usec): min=388, max=512814, avg=232730.27, stdev=224693.25 lat (usec): min=389, max=512815, avg=232731.34, stdev=224693.63 clat percentiles (usec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 7504], 40.00th=[ 7504], 50.00th=[283116], 60.00th=[283116], | 70.00th=[358613], 80.00th=[358613], 90.00th=[513803], 95.00th=[513803], | 99.00th=[513803], 99.50th=[513803], 99.90th=[513803], 99.95th=[513803], | 99.99th=[513803] bw ( KiB/s): min= 1988, max= 5731, per=100.00%, avg=3859.50, stdev=2646.70, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1595KiB/s (1633kB/s)(7168KiB/4495msec); 0 zone resets clat (msec): min=187, max=1108, avg=471.57, stdev=305.49 lat (msec): min=187, max=1108, avg=471.93, stdev=305.25 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 257], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 430], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 506], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1490, max= 3813, per=66.91%, avg=2214.17, stdev=809.80, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (usec) : 500=8.33% lat (msec) : 10=8.33%, 250=8.33%, 500=50.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=8.70%, ctx=115, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2364KiB/s (2421kB/s), 277KiB/s-1139KiB/s (284kB/s-1166kB/s), io=20.0MiB (20.0MB), run=4495-8664msec WRITE: bw=3309KiB/s (3389kB/s), 591KiB/s-1595KiB/s (605kB/s-1633kB/s), io=28.0MiB (29.4MB), run=4495-8664msec rand-rw: (groupid=0, jobs=1): err= 0: pid=177784: Thu Jul 30 05:01:38 2026 read: IOPS=0, BW=758KiB/s (776kB/s)(7168KiB/9460msec) clat (msec): min=128, max=1285, avg=434.43, stdev=421.23 lat (msec): min=128, max=1285, avg=434.43, stdev=421.23 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 131], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 232], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 684], 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= 1928, max= 2035, per=94.57%, avg=1998.17, stdev=41.42, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=541KiB/s (554kB/s)(5120KiB/9460msec); 0 zone resets clat (msec): min=138, max=4982, avg=1191.21, stdev=2124.50 lat (msec): min=138, max=4982, avg=1191.28, stdev=2124.50 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 5000], 95.00th=[ 5000], | 99.00th=[ 5000], 99.50th=[ 5000], 99.90th=[ 5000], 99.95th=[ 5000], | 99.99th=[ 5000] bw ( KiB/s): min= 2015, max= 5785, per=100.00%, avg=3282.67, stdev=2167.15, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=1.67%, ctx=78, 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=177786: Thu Jul 30 05:01:38 2026 read: IOPS=0, BW=211KiB/s (216kB/s)(2048KiB/9688msec) clat (msec): min=174, max=882, avg=528.17, stdev=500.68 lat (msec): min=174, max=882, avg=528.17, stdev=500.68 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 176], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1973, max= 2035, per=94.84%, avg=2004.00, stdev=43.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1057KiB/s (1082kB/s)(10.0MiB/9688msec); 0 zone resets clat (msec): min=134, max=4245, avg=851.61, stdev=1290.57 lat (msec): min=134, max=4245, avg=851.67, stdev=1290.56 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 165], | 30.00th=[ 251], 40.00th=[ 275], 50.00th=[ 313], 60.00th=[ 342], | 70.00th=[ 355], 80.00th=[ 625], 90.00th=[ 1821], 95.00th=[ 4245], | 99.00th=[ 4245], 99.50th=[ 4245], 99.90th=[ 4245], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 1885, max= 4031, per=88.68%, avg=2624.00, stdev=1025.92, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (msec) : 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.85%, ctx=97, 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=177788: Thu Jul 30 05:01:38 2026 read: IOPS=0, BW=709KiB/s (726kB/s)(6144KiB/8667msec) clat (msec): min=123, max=3172, avg=660.69, stdev=1230.77 lat (msec): min=123, max=3172, avg=660.69, stdev=1230.77 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 186], | 70.00th=[ 209], 80.00th=[ 209], 90.00th=[ 3171], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 2019, max= 4031, per=100.00%, avg=2528.00, stdev=1002.02, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=709KiB/s (726kB/s)(6144KiB/8667msec); 0 zone resets clat (msec): min=295, max=1842, avg=701.80, stdev=569.66 lat (msec): min=295, max=1844, avg=702.22, stdev=570.51 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 527], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 1946, max= 2039, per=67.73%, avg=2004.00, stdev=41.95, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=25.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.70%, ctx=168, 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=177790: Thu Jul 30 05:01:38 2026 read: IOPS=0, BW=533KiB/s (546kB/s)(5120KiB/9609msec) clat (msec): min=103, max=541, avg=277.00, stdev=217.43 lat (msec): min=103, max=541, avg=277.00, stdev=217.43 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 130], 60.00th=[ 130], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1928, max= 4096, per=100.00%, avg=2686.33, stdev=1221.98, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=0, BW=746KiB/s (764kB/s)(7168KiB/9609msec); 0 zone resets clat (msec): min=133, max=4723, avg=1141.37, stdev=1633.41 lat (msec): min=133, max=4725, avg=1141.67, stdev=1633.76 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 136], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 592], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 1318], 90.00th=[ 4732], 95.00th=[ 4732], | 99.00th=[ 4732], 99.50th=[ 4732], 99.90th=[ 4732], 99.95th=[ 4732], | 99.99th=[ 4732] bw ( KiB/s): min= 1889, max= 2015, per=66.29%, avg=1961.60, stdev=52.67, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.84%, ctx=94, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2114KiB/s (2165kB/s), 211KiB/s-758KiB/s (216kB/s-776kB/s), io=20.0MiB (20.0MB), run=8667-9688msec WRITE: bw=2960KiB/s (3031kB/s), 541KiB/s-1057KiB/s (554kB/s-1082kB/s), io=28.0MiB (29.4MB), run=8667-9688msec 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=177798: Thu Jul 30 05:01:55 2026 read: IOPS=0, BW=3823KiB/s (3915kB/s)(12.0MiB/3214msec) clat (msec): min=788, max=1368, avg=1071.15, stdev=290.45 lat (msec): min=788, max=1368, avg=1071.15, stdev=290.45 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 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= 8062, max= 8126, per=100.00%, avg=8094.00, stdev=45.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=2.49%, ctx=64, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=177799: Thu Jul 30 05:01:55 2026 read: IOPS=0, BW=2079KiB/s (2129kB/s)(4096KiB/1970msec) clat (nsec): min=521640k, max=521640k, avg=521639748.00, stdev= 0.00 lat (nsec): min=521642k, max=521642k, avg=521642132.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 5512, max= 5512, per=100.00%, avg=5512.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4158KiB/s (4258kB/s)(8192KiB/1970msec); 0 zone resets clat (msec): min=393, max=994, avg=694.14, stdev=425.22 lat (msec): min=393, max=995, avg=694.44, stdev=425.17 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 995], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 8062, max= 8062, per=84.89%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.05%, sys=4.62%, ctx=57, 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=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=177800: Thu Jul 30 05:01:55 2026 write: IOPS=2, BW=8802KiB/s (9014kB/s)(12.0MiB/1396msec); 0 zone resets clat (msec): min=301, max=720, avg=450.53, stdev=234.05 lat (msec): min=302, max=720, avg=451.08, stdev=233.83 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7627, max= 7922, per=81.86%, avg=7774.50, stdev=208.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.07%, sys=7.10%, ctx=41, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=177801: Thu Jul 30 05:01:55 2026 write: IOPS=0, BW=3562KiB/s (3647kB/s)(12.0MiB/3450msec); 0 zone resets clat (msec): min=242, max=2230, avg=1148.49, stdev=1005.26 lat (msec): min=245, max=2230, avg=1149.69, stdev=1004.23 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 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= 6005, max= 7543, per=71.33%, avg=6774.00, stdev=1087.53, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.52%, 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=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=5098KiB/s (5220kB/s), 2079KiB/s-3823KiB/s (2129kB/s-3915kB/s), io=16.0MiB (16.8MB), run=1970-3214msec WRITE: bw=9498KiB/s (9726kB/s), 3562KiB/s-8802KiB/s (3647kB/s-9014kB/s), io=32.0MiB (33.6MB), run=1396-3450msec rand-rw: (groupid=0, jobs=1): err= 0: pid=177803: Thu Jul 30 05:01:56 2026 read: IOPS=1, BW=4104KiB/s (4203kB/s)(12.0MiB/2994msec) clat (msec): min=913, max=1123, avg=997.65, stdev=110.77 lat (msec): min=913, max=1123, avg=997.65, stdev=110.77 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7861, max= 8031, per=100.00%, avg=7946.00, stdev=120.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=8.95%, ctx=207, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=177804: Thu Jul 30 05:01:56 2026 read: IOPS=0, BW=1540KiB/s (1577kB/s)(4096KiB/2660msec) clat (nsec): min=1041.2M, max=1041.2M, avg=1041155331.00, stdev= 0.00 lat (nsec): min=1041.2M, max=1041.2M, avg=1041156741.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1045], 5.00th=[ 1045], 10.00th=[ 1045], 20.00th=[ 1045], | 30.00th=[ 1045], 40.00th=[ 1045], 50.00th=[ 1045], 60.00th=[ 1045], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] 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=3080KiB/s (3154kB/s)(8192KiB/2660msec); 0 zone resets clat (msec): min=783, max=833, avg=808.48, stdev=35.50 lat (msec): min=783, max=833, avg=808.74, stdev=35.49 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7861, max= 7861, per=79.34%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.57%, ctx=90, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=177805: Thu Jul 30 05:01:56 2026 write: IOPS=0, BW=3716KiB/s (3805kB/s)(12.0MiB/3307msec); 0 zone resets clat (msec): min=430, max=2179, avg=1099.01, stdev=944.08 lat (msec): min=432, max=2179, avg=1099.83, stdev=943.70 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 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= 6759, max= 8175, per=75.36%, avg=7467.00, stdev=1001.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.48%, 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=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=177806: Thu Jul 30 05:01:56 2026 write: IOPS=0, BW=4042KiB/s (4139kB/s)(12.0MiB/3040msec); 0 zone resets clat (msec): min=570, max=1540, avg=1012.61, stdev=490.62 lat (msec): min=571, max=1540, avg=1012.86, stdev=490.63 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 927], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 6759, max= 8031, per=74.64%, avg=7395.00, stdev=899.44, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=3.69%, ctx=49, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5472KiB/s (5604kB/s), 1540KiB/s-4104KiB/s (1577kB/s-4203kB/s), io=16.0MiB (16.8MB), run=2660-2994msec WRITE: bw=9909KiB/s (10.1MB/s), 3080KiB/s-4042KiB/s (3154kB/s-4139kB/s), io=32.0MiB (33.6MB), run=2660-3307msec