== sanity test 398b: DIO and buffer IO race ============== 10:51:16 (1788533476) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.7387 s, 8.8 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=179491: Fri Sep 4 10:54:01 2026 read: IOPS=10, BW=42.9KiB/s (43.9kB/s)(5992KiB/139782msec) clat (usec): min=38, max=1103.3k, avg=51787.11, stdev=42787.98 lat (usec): min=38, max=1103.3k, avg=51791.48, stdev=42787.12 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 159], 10.00th=[ 19006], | 20.00th=[ 26346], 30.00th=[ 32113], 40.00th=[ 38536], | 50.00th=[ 44827], 60.00th=[ 52167], 70.00th=[ 61604], | 80.00th=[ 71828], 90.00th=[ 92799], 95.00th=[ 111674], | 99.00th=[ 173016], 99.50th=[ 191890], 99.90th=[ 254804], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 7, max= 119, per=24.99%, avg=42.49, stdev=17.61, samples=275 iops : min= 1, max= 29, avg= 9.96, stdev= 4.43, samples=275 write: IOPS=11, BW=45.0KiB/s (46.1kB/s)(6296KiB/139782msec); 0 zone resets clat (usec): min=1065, max=245843, avg=39199.76, stdev=38973.71 lat (usec): min=1066, max=245843, avg=39203.50, stdev=38973.14 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1434], 10.00th=[ 2212], 20.00th=[ 5014], | 30.00th=[ 9110], 40.00th=[ 17957], 50.00th=[ 28181], 60.00th=[ 38011], | 70.00th=[ 51643], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[116917], | 99.00th=[164627], 99.50th=[185598], 99.90th=[221250], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 7, max= 103, per=25.17%, avg=44.80, stdev=19.76, samples=274 iops : min= 1, max= 25, avg=10.54, stdev= 4.96, samples=274 lat (usec) : 50=0.16%, 100=2.08%, 250=0.20%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.62%, 4=4.10%, 10=7.23%, 20=8.30%, 50=36.46% lat (msec) : 100=28.81%, 250=7.85%, 500=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.23%, ctx=6771, 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=179493: Fri Sep 4 10:54:01 2026 read: IOPS=10, BW=42.2KiB/s (43.2kB/s)(5940KiB/140913msec) clat (usec): min=39, max=339584, avg=51161.67, stdev=32794.31 lat (usec): min=39, max=339585, avg=51171.30, stdev=32793.74 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 13960], 10.00th=[ 19530], 20.00th=[ 25822], | 30.00th=[ 32113], 40.00th=[ 38536], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 61604], 80.00th=[ 71828], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[173016], 99.50th=[191890], 99.90th=[254804], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 7, max= 94, per=24.64%, avg=41.89, stdev=17.78, samples=276 iops : min= 1, max= 23, avg= 9.81, stdev= 4.49, samples=276 write: IOPS=11, BW=45.0KiB/s (46.1kB/s)(6348KiB/140913msec); 0 zone resets clat (usec): min=901, max=1091.6k, avg=40549.92, stdev=49042.55 lat (usec): min=903, max=1091.6k, avg=40560.90, stdev=49043.74 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1369], 10.00th=[ 1893], | 20.00th=[ 5145], 30.00th=[ 9110], 40.00th=[ 17695], | 50.00th=[ 28443], 60.00th=[ 39060], 70.00th=[ 51119], | 80.00th=[ 68682], 90.00th=[ 94897], 95.00th=[ 120062], | 99.00th=[ 183501], 99.50th=[ 212861], 99.90th=[ 308282], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 7, max= 127, per=25.09%, avg=44.67, stdev=20.63, samples=276 iops : min= 1, max= 31, avg=10.51, stdev= 5.18, samples=276 lat (usec) : 50=0.07%, 100=1.24%, 250=0.20%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=5.34%, 4=3.58%, 10=7.26%, 20=8.85%, 50=36.72% lat (msec) : 100=28.78%, 250=7.55%, 500=0.16%, 2000=0.03% cpu : usr=0.09%, sys=5.12%, ctx=6742, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179494: Fri Sep 4 10:54:01 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(6028KiB/139263msec) clat (usec): min=30, max=416022, avg=51408.53, stdev=34366.28 lat (usec): min=30, max=416024, avg=51413.11, stdev=34365.35 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 12780], 10.00th=[ 19268], 20.00th=[ 26346], | 30.00th=[ 31327], 40.00th=[ 38011], 50.00th=[ 45351], 60.00th=[ 52691], | 70.00th=[ 61080], 80.00th=[ 72877], 90.00th=[ 91751], 95.00th=[110625], | 99.00th=[166724], 99.50th=[202376], 99.90th=[270533], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 127, per=25.25%, avg=42.93, stdev=18.11, samples=274 iops : min= 1, max= 31, avg=10.07, stdev= 4.54, samples=274 write: IOPS=11, BW=44.0KiB/s (46.0kB/s)(6260KiB/139263msec); 0 zone resets clat (usec): min=987, max=1059.0k, avg=39099.46, stdev=46014.43 lat (usec): min=988, max=1059.0k, avg=39107.88, stdev=46016.21 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1450], 10.00th=[ 2278], | 20.00th=[ 4948], 30.00th=[ 8848], 40.00th=[ 18482], | 50.00th=[ 30278], 60.00th=[ 39060], 70.00th=[ 49021], | 80.00th=[ 65799], 90.00th=[ 90702], 95.00th=[ 113771], | 99.00th=[ 170918], 99.50th=[ 189793], 99.90th=[ 283116], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 127, per=25.14%, avg=44.75, stdev=20.36, samples=273 iops : min= 1, max= 31, avg=10.53, stdev= 5.12, samples=273 lat (usec) : 50=0.26%, 100=1.50%, 250=0.26%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=4.56%, 4=3.84%, 10=8.14%, 20=7.49%, 50=37.57% lat (msec) : 100=28.68%, 250=7.39%, 500=0.13%, 2000=0.03% cpu : usr=0.09%, sys=5.12%, ctx=6676, 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=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=179495: Fri Sep 4 10:54:01 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(6052KiB/137965msec) clat (usec): min=30, max=1060.6k, avg=50141.22, stdev=40884.58 lat (usec): min=30, max=1060.6k, avg=50142.95, stdev=40884.58 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 1483], 10.00th=[ 17957], | 20.00th=[ 24773], 30.00th=[ 31065], 40.00th=[ 36439], | 50.00th=[ 42730], 60.00th=[ 50594], 70.00th=[ 59507], | 80.00th=[ 72877], 90.00th=[ 90702], 95.00th=[ 108528], | 99.00th=[ 160433], 99.50th=[ 181404], 99.90th=[ 210764], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 95, per=25.53%, avg=43.39, stdev=15.55, samples=271 iops : min= 1, max= 23, avg=10.20, stdev= 3.90, samples=271 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6236KiB/137965msec); 0 zone resets clat (usec): min=964, max=288453, avg=39519.70, stdev=40734.06 lat (usec): min=964, max=288455, avg=39527.16, stdev=40735.19 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1418], 10.00th=[ 1991], 20.00th=[ 4621], | 30.00th=[ 8356], 40.00th=[ 19268], 50.00th=[ 28967], 60.00th=[ 38536], | 70.00th=[ 51119], 80.00th=[ 67634], 90.00th=[ 93848], 95.00th=[122160], | 99.00th=[177210], 99.50th=[191890], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 139, per=25.15%, avg=44.77, stdev=22.15, samples=270 iops : min= 1, max= 34, avg=10.54, stdev= 5.59, samples=270 lat (usec) : 50=0.10%, 100=1.92%, 250=0.29%, 500=0.07%, 1000=0.07% lat (msec) : 2=5.14%, 4=4.00%, 10=7.68%, 20=7.68%, 50=37.47% lat (msec) : 100=28.32%, 250=7.13%, 500=0.10%, 2000=0.03% cpu : usr=0.09%, sys=5.17%, ctx=6514, 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=170KiB/s (174kB/s), 42.2KiB/s-43.9KiB/s (43.2kB/s-44.9kB/s), io=23.4MiB (24.6MB), run=137965-140913msec WRITE: bw=178KiB/s (183kB/s), 44.0KiB/s-45.2KiB/s (46.0kB/s-46.3kB/s), io=24.6MiB (25.7MB), run=137965-140913msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179496: Fri Sep 4 10:54:43 2026 read: IOPS=8, BW=33.1KiB/s (33.9kB/s)(5992KiB/181224msec) clat (msec): min=6, max=1125, avg=48.26, stdev=51.31 lat (msec): min=6, max=1125, avg=48.26, stdev=51.31 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=[ 39], | 70.00th=[ 50], 80.00th=[ 71], 90.00th=[ 104], 95.00th=[ 140], | 99.00th=[ 226], 99.50th=[ 243], 99.90th=[ 305], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 127, per=25.93%, avg=33.96, stdev=23.28, samples=343 iops : min= 1, max= 31, avg= 7.81, stdev= 5.86, samples=343 write: IOPS=8, BW=34.7KiB/s (35.6kB/s)(6296KiB/181224msec); 0 zone resets clat (msec): min=11, max=367, avg=68.92, stdev=48.15 lat (msec): min=11, max=367, avg=68.92, stdev=48.14 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 82], 80.00th=[ 104], 90.00th=[ 136], 95.00th=[ 165], | 99.00th=[ 232], 99.50th=[ 259], 99.90th=[ 347], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 126, per=25.17%, avg=34.73, stdev=22.06, samples=352 iops : min= 1, max= 31, avg= 8.01, stdev= 5.54, samples=352 lat (msec) : 10=1.07%, 20=13.35%, 50=44.50%, 100=24.71%, 250=15.82% lat (msec) : 500=0.52%, 2000=0.03% cpu : usr=0.06%, sys=1.78%, ctx=4955, 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=179497: Fri Sep 4 10:54:43 2026 read: IOPS=8, BW=32.6KiB/s (33.4kB/s)(5940KiB/182169msec) clat (msec): min=6, max=1140, avg=48.79, stdev=52.02 lat (msec): min=6, max=1140, avg=48.79, stdev=52.02 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 72], 90.00th=[ 108], 95.00th=[ 140], | 99.00th=[ 215], 99.50th=[ 241], 99.90th=[ 368], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 119, per=25.42%, avg=33.30, stdev=23.38, samples=346 iops : min= 1, max= 29, avg= 7.65, stdev= 5.88, samples=346 write: IOPS=8, BW=34.8KiB/s (35.7kB/s)(6348KiB/182169msec); 0 zone resets clat (msec): min=11, max=429, avg=68.85, stdev=49.83 lat (msec): min=11, max=429, avg=68.86, stdev=49.83 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 64], | 70.00th=[ 81], 80.00th=[ 104], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 245], 99.50th=[ 284], 99.90th=[ 414], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 119, per=25.32%, avg=34.95, stdev=22.20, samples=353 iops : min= 1, max= 29, avg= 8.06, stdev= 5.58, samples=353 lat (msec) : 10=1.50%, 20=12.73%, 50=44.01%, 100=25.33%, 250=15.85% lat (msec) : 500=0.55%, 2000=0.03% cpu : usr=0.06%, sys=1.80%, ctx=5024, 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=179498: Fri Sep 4 10:54:43 2026 read: IOPS=8, BW=33.2KiB/s (33.0kB/s)(6028KiB/181650msec) clat (msec): min=6, max=343, avg=48.60, stdev=42.43 lat (msec): min=6, max=343, avg=48.60, stdev=42.43 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 70], 90.00th=[ 106], 95.00th=[ 142], | 99.00th=[ 220], 99.50th=[ 243], 99.90th=[ 292], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 128, per=25.62%, avg=33.56, stdev=22.24, samples=349 iops : min= 1, max= 32, avg= 7.71, stdev= 5.59, samples=349 write: IOPS=8, BW=34.5KiB/s (35.3kB/s)(6260KiB/181650msec); 0 zone resets clat (msec): min=12, max=1094, avg=68.95, stdev=56.85 lat (msec): min=12, max=1094, avg=68.95, stdev=56.85 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 62], | 70.00th=[ 79], 80.00th=[ 100], 90.00th=[ 133], 95.00th=[ 167], | 99.00th=[ 268], 99.50th=[ 334], 99.90th=[ 443], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 110, per=24.82%, avg=34.26, stdev=21.96, samples=355 iops : min= 1, max= 27, avg= 7.89, stdev= 5.53, samples=355 lat (msec) : 10=1.27%, 20=10.90%, 50=46.74%, 100=25.75%, 250=14.62% lat (msec) : 500=0.68%, 2000=0.03% cpu : usr=0.06%, sys=1.73%, ctx=4759, 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=179499: Fri Sep 4 10:54:43 2026 read: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6052KiB/181647msec) clat (msec): min=6, max=356, avg=47.09, stdev=41.47 lat (msec): min=6, max=356, avg=47.09, stdev=41.47 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 68], 90.00th=[ 103], 95.00th=[ 142], | 99.00th=[ 199], 99.50th=[ 224], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 134, per=26.27%, avg=34.41, stdev=23.03, samples=342 iops : min= 1, max= 33, avg= 7.93, stdev= 5.81, samples=342 write: IOPS=8, BW=34.3KiB/s (35.2kB/s)(6236KiB/181647msec); 0 zone resets clat (msec): min=11, max=1142, avg=70.55, stdev=57.24 lat (msec): min=11, max=1142, avg=70.55, stdev=57.24 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 82], 80.00th=[ 104], 90.00th=[ 136], 95.00th=[ 171], | 99.00th=[ 249], 99.50th=[ 300], 99.90th=[ 397], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 111, per=24.75%, avg=34.15, stdev=22.07, samples=355 iops : min= 1, max= 27, avg= 7.86, stdev= 5.54, samples=355 lat (msec) : 10=1.60%, 20=11.95%, 50=45.02%, 100=25.42%, 250=15.43% lat (msec) : 500=0.55%, 2000=0.03% cpu : usr=0.06%, sys=1.80%, ctx=4930, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=132KiB/s (135kB/s), 32.6KiB/s-33.3KiB/s (33.4kB/s-34.1kB/s), io=23.4MiB (24.6MB), run=181224-182169msec WRITE: bw=138KiB/s (141kB/s), 34.3KiB/s-34.8KiB/s (35.2kB/s-35.7kB/s), io=24.6MiB (25.7MB), run=181224-182169msec 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=179549: Fri Sep 4 10:55:27 2026 read: IOPS=11, BW=188KiB/s (192kB/s)(5920KiB/31529msec) clat (usec): min=45, max=226321, avg=43220.82, stdev=27712.65 lat (usec): min=45, max=226323, avg=43226.94, stdev=27712.19 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 93], 10.00th=[ 15139], 20.00th=[ 23725], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 45351], | 70.00th=[ 51643], 80.00th=[ 60556], 90.00th=[ 77071], 95.00th=[ 86508], | 99.00th=[139461], 99.50th=[164627], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 62, max= 379, per=26.52%, avg=188.55, stdev=78.49, samples=62 iops : min= 3, max= 23, avg=11.05, stdev= 5.01, samples=62 write: IOPS=12, BW=202KiB/s (207kB/s)(6368KiB/31529msec); 0 zone resets clat (usec): min=1812, max=199682, avg=38615.54, stdev=35620.49 lat (usec): min=1815, max=199685, avg=38760.74, stdev=35744.30 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 2868], 10.00th=[ 4883], 20.00th=[ 7963], | 30.00th=[ 12387], 40.00th=[ 18744], 50.00th=[ 26608], 60.00th=[ 35914], | 70.00th=[ 50594], 80.00th=[ 70779], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[152044], 99.50th=[156238], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 63, max= 380, per=27.04%, avg=202.29, stdev=69.25, samples=62 iops : min= 3, max= 23, avg=11.92, stdev= 4.40, samples=62 lat (usec) : 50=0.13%, 100=2.34%, 250=1.04%, 750=0.13%, 1000=0.26% lat (msec) : 2=0.78%, 4=3.39%, 10=9.11%, 20=11.20%, 50=40.36% lat (msec) : 100=26.17%, 250=5.08% cpu : usr=0.10%, sys=6.69%, ctx=1834, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179550: Fri Sep 4 10:55:27 2026 read: IOPS=10, BW=171KiB/s (175kB/s)(5744KiB/33671msec) clat (usec): min=60, max=210513, avg=50326.49, stdev=29411.63 lat (usec): min=60, max=210514, avg=50327.98, stdev=29411.69 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 486], 10.00th=[ 21627], 20.00th=[ 27657], | 30.00th=[ 34866], 40.00th=[ 40109], 50.00th=[ 45351], 60.00th=[ 52691], | 70.00th=[ 61604], 80.00th=[ 69731], 90.00th=[ 85459], 95.00th=[101188], | 99.00th=[137364], 99.50th=[189793], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 31, max= 346, per=23.92%, avg=170.11, stdev=67.78, samples=66 iops : min= 1, max= 21, avg= 9.89, stdev= 4.33, samples=66 write: IOPS=12, BW=194KiB/s (199kB/s)(6544KiB/33671msec); 0 zone resets clat (usec): min=1684, max=233128, avg=37267.41, stdev=33428.96 lat (usec): min=1698, max=233130, avg=37285.53, stdev=33439.59 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 2900], 10.00th=[ 4293], 20.00th=[ 7308], | 30.00th=[ 12387], 40.00th=[ 20841], 50.00th=[ 30802], 60.00th=[ 38536], | 70.00th=[ 47973], 80.00th=[ 61604], 90.00th=[ 81265], 95.00th=[103285], | 99.00th=[147850], 99.50th=[158335], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 415, per=25.92%, avg=193.86, stdev=88.97, samples=66 iops : min= 1, max= 25, avg=11.39, stdev= 5.53, samples=66 lat (usec) : 100=1.56%, 250=0.52%, 500=0.26%, 750=0.13% lat (msec) : 2=0.65%, 4=4.30%, 10=8.85%, 20=9.11%, 50=39.06% lat (msec) : 100=30.08%, 250=5.47% cpu : usr=0.09%, sys=6.67%, ctx=1933, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179551: Fri Sep 4 10:55:27 2026 read: IOPS=11, BW=190KiB/s (194kB/s)(6256KiB/32986msec) clat (usec): min=53, max=267511, avg=48551.07, stdev=29950.00 lat (usec): min=53, max=267513, avg=48552.58, stdev=29950.00 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 102], 10.00th=[ 19792], 20.00th=[ 28967], | 30.00th=[ 33817], 40.00th=[ 39060], 50.00th=[ 44303], 60.00th=[ 49546], | 70.00th=[ 58983], 80.00th=[ 67634], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[152044], 99.50th=[177210], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 63, max= 313, per=27.18%, avg=193.22, stdev=63.35, samples=64 iops : min= 3, max= 19, avg=11.34, stdev= 4.00, samples=64 write: IOPS=11, BW=183KiB/s (187kB/s)(6032KiB/32986msec); 0 zone resets clat (usec): min=1767, max=215993, avg=36332.22, stdev=34598.84 lat (usec): min=1770, max=215995, avg=36337.39, stdev=34598.28 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2442], 10.00th=[ 4113], 20.00th=[ 6849], | 30.00th=[ 11600], 40.00th=[ 17957], 50.00th=[ 28443], 60.00th=[ 35390], | 70.00th=[ 44303], 80.00th=[ 58983], 90.00th=[ 82314], 95.00th=[105382], | 99.00th=[147850], 99.50th=[196084], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 61, max= 440, per=24.33%, avg=181.98, stdev=76.75, samples=65 iops : min= 3, max= 27, avg=10.65, stdev= 4.88, samples=65 lat (usec) : 100=2.34%, 250=0.91%, 750=0.13%, 1000=0.13% lat (msec) : 2=0.91%, 4=4.04%, 10=8.72%, 20=8.46%, 50=41.80% lat (msec) : 100=27.47%, 250=4.95%, 500=0.13% cpu : usr=0.08%, sys=6.48%, ctx=1865, 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=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=179552: Fri Sep 4 10:55:27 2026 read: IOPS=11, BW=180KiB/s (185kB/s)(6032KiB/33475msec) clat (usec): min=51, max=189844, avg=46346.35, stdev=31989.51 lat (usec): min=52, max=189846, avg=46352.11, stdev=31990.42 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 78], 10.00th=[ 117], 20.00th=[ 23725], | 30.00th=[ 29230], 40.00th=[ 34341], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 58983], 80.00th=[ 68682], 90.00th=[ 86508], 95.00th=[100140], | 99.00th=[164627], 99.50th=[170918], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 31, max= 349, per=25.18%, avg=179.03, stdev=79.07, samples=66 iops : min= 1, max= 21, avg=10.47, stdev= 5.02, samples=66 write: IOPS=11, BW=187KiB/s (191kB/s)(6256KiB/33475msec); 0 zone resets clat (usec): min=1778, max=218203, avg=40155.92, stdev=39361.23 lat (usec): min=1781, max=218206, avg=40168.68, stdev=39358.59 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 3392], 10.00th=[ 4883], 20.00th=[ 8455], | 30.00th=[ 12518], 40.00th=[ 19530], 50.00th=[ 28181], 60.00th=[ 38011], | 70.00th=[ 48497], 80.00th=[ 62653], 90.00th=[ 95945], 95.00th=[122160], | 99.00th=[191890], 99.50th=[212861], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 383, per=25.02%, avg=187.14, stdev=74.48, samples=66 iops : min= 1, max= 23, avg=10.97, stdev= 4.69, samples=66 lat (usec) : 100=4.43%, 250=1.17%, 750=0.26% lat (msec) : 2=0.65%, 4=3.26%, 10=8.07%, 20=10.55%, 50=37.76% lat (msec) : 100=26.69%, 250=7.16% cpu : usr=0.09%, sys=6.30%, ctx=1888, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=711KiB/s (728kB/s), 171KiB/s-190KiB/s (175kB/s-194kB/s), io=23.4MiB (24.5MB), run=31529-33671msec WRITE: bw=748KiB/s (766kB/s), 183KiB/s-202KiB/s (187kB/s-207kB/s), io=24.6MiB (25.8MB), run=31529-33671msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179545: Fri Sep 4 10:55:37 2026 read: IOPS=8, BW=135KiB/s (138kB/s)(5920KiB/43921msec) clat (msec): min=7, max=332, avg=46.61, stdev=42.04 lat (msec): min=7, max=332, avg=46.61, stdev=42.04 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 72], 90.00th=[ 108], 95.00th=[ 127], | 99.00th=[ 213], 99.50th=[ 264], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 29, max= 407, per=25.09%, avg=136.51, stdev=85.98, samples=83 iops : min= 1, max= 25, avg= 7.76, stdev= 5.44, samples=83 write: IOPS=9, BW=145KiB/s (148kB/s)(6368KiB/43921msec); 0 zone resets clat (msec): min=17, max=354, avg=66.82, stdev=44.36 lat (msec): min=17, max=354, avg=66.82, stdev=44.36 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 26], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 102], 90.00th=[ 125], 95.00th=[ 159], | 99.00th=[ 192], 99.50th=[ 305], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 31, max= 350, per=25.28%, avg=144.84, stdev=78.87, samples=85 iops : min= 1, max= 21, avg= 8.28, stdev= 5.00, samples=85 lat (msec) : 10=0.52%, 20=11.59%, 50=48.83%, 100=22.79%, 250=15.76% lat (msec) : 500=0.52% cpu : usr=0.08%, sys=2.07%, ctx=1249, 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=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=179546: Fri Sep 4 10:55:37 2026 read: IOPS=8, BW=131KiB/s (134kB/s)(5744KiB/43952msec) clat (msec): min=7, max=269, avg=45.17, stdev=38.40 lat (msec): min=7, max=269, avg=45.18, stdev=38.40 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 62], 90.00th=[ 100], 95.00th=[ 129], | 99.00th=[ 186], 99.50th=[ 241], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 480, per=24.87%, avg=135.30, stdev=89.02, samples=84 iops : min= 1, max= 30, avg= 7.67, stdev= 5.64, samples=84 write: IOPS=9, BW=149KiB/s (152kB/s)(6544KiB/43952msec); 0 zone resets clat (msec): min=13, max=354, avg=67.54, stdev=48.38 lat (msec): min=13, max=354, avg=67.55, stdev=48.38 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 45], 50.00th=[ 51], 60.00th=[ 59], | 70.00th=[ 77], 80.00th=[ 97], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 234], 99.50th=[ 305], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 31, max= 382, per=25.84%, avg=148.08, stdev=86.93, samples=87 iops : min= 1, max= 23, avg= 8.48, stdev= 5.53, samples=87 lat (msec) : 10=0.78%, 20=9.90%, 50=50.26%, 100=24.35%, 250=14.19% lat (msec) : 500=0.52% cpu : usr=0.08%, sys=2.02%, ctx=1222, 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=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=179547: Fri Sep 4 10:55:37 2026 read: IOPS=8, BW=144KiB/s (147kB/s)(6256KiB/43585msec) clat (msec): min=7, max=318, avg=45.82, stdev=40.39 lat (msec): min=7, max=318, avg=45.82, stdev=40.39 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 63], 90.00th=[ 106], 95.00th=[ 130], | 99.00th=[ 190], 99.50th=[ 232], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 416, per=26.71%, avg=145.32, stdev=94.38, samples=85 iops : min= 1, max= 26, avg= 8.31, stdev= 5.96, samples=85 write: IOPS=8, BW=138KiB/s (142kB/s)(6032KiB/43585msec); 0 zone resets clat (msec): min=18, max=381, avg=67.31, stdev=42.64 lat (msec): min=18, max=381, avg=67.32, stdev=42.64 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 81], 80.00th=[ 102], 90.00th=[ 130], 95.00th=[ 144], | 99.00th=[ 197], 99.50th=[ 211], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 31, max= 348, per=24.18%, avg=138.55, stdev=73.61, samples=85 iops : min= 1, max= 21, avg= 7.88, stdev= 4.66, samples=85 lat (msec) : 10=0.52%, 20=11.85%, 50=47.14%, 100=24.61%, 250=15.63% lat (msec) : 500=0.26% cpu : usr=0.08%, sys=2.06%, ctx=1199, 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=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=179548: Fri Sep 4 10:55:37 2026 read: IOPS=8, BW=138KiB/s (142kB/s)(6032KiB/43650msec) clat (msec): min=7, max=212, avg=49.89, stdev=38.23 lat (msec): min=7, max=212, avg=49.89, stdev=38.23 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 56], 80.00th=[ 77], 90.00th=[ 113], 95.00th=[ 134], | 99.00th=[ 176], 99.50th=[ 180], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 29, max= 446, per=25.17%, avg=136.93, stdev=77.13, samples=86 iops : min= 1, max= 27, avg= 7.78, stdev= 4.89, samples=86 write: IOPS=8, BW=143KiB/s (147kB/s)(6256KiB/43650msec); 0 zone resets clat (msec): min=17, max=315, avg=63.04, stdev=39.55 lat (msec): min=17, max=315, avg=63.04, stdev=39.55 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 43], 50.00th=[ 48], 60.00th=[ 62], | 70.00th=[ 74], 80.00th=[ 88], 90.00th=[ 115], 95.00th=[ 138], | 99.00th=[ 201], 99.50th=[ 211], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 382, per=24.98%, avg=143.13, stdev=80.20, samples=86 iops : min= 1, max= 23, avg= 8.17, stdev= 5.10, samples=86 lat (msec) : 10=1.04%, 20=8.59%, 50=49.22%, 100=26.69%, 250=14.32% lat (msec) : 500=0.13% cpu : usr=0.07%, sys=2.07%, ctx=1206, 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=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=545KiB/s (558kB/s), 131KiB/s-144KiB/s (134kB/s-147kB/s), io=23.4MiB (24.5MB), run=43585-43952msec WRITE: bw=573KiB/s (587kB/s), 138KiB/s-149KiB/s (142kB/s-152kB/s), io=24.6MiB (25.8MB), run=43585-43952msec 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=179565: Fri Sep 4 10:55:55 2026 read: IOPS=1, BW=1348KiB/s (1380kB/s)(7168KiB/5319msec) clat (usec): min=1619, max=713260, avg=231298.69, stdev=224821.03 lat (usec): min=1620, max=713261, avg=231300.05, stdev=224821.10 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1614], 10.00th=[ 1614], 20.00th=[162530], | 30.00th=[164627], 40.00th=[164627], 50.00th=[164627], 60.00th=[164627], | 70.00th=[164627], 80.00th=[246416], 90.00th=[717226], 95.00th=[717226], | 99.00th=[717226], 99.50th=[717226], 99.90th=[717226], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 2019, max= 4087, per=86.52%, avg=2889.00, stdev=1028.94, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=963KiB/s (986kB/s)(5120KiB/5319msec); 0 zone resets clat (msec): min=183, max=1473, avg=726.39, stdev=496.76 lat (msec): min=184, max=1473, avg=726.49, stdev=496.75 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 1903, max= 2043, per=42.82%, avg=2002.00, stdev=66.32, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 2=8.33%, 250=50.00%, 750=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=9.95%, ctx=250, 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=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=179566: Fri Sep 4 10:55:55 2026 read: IOPS=0, BW=334KiB/s (342kB/s)(2048KiB/6132msec) clat (msec): min=206, max=1858, avg=1032.58, stdev=1167.89 lat (msec): min=206, max=1858, avg=1032.58, stdev=1167.89 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 1854], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 2019, max= 2035, per=60.71%, avg=2027.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1670KiB/s (1710kB/s)(10.0MiB/6132msec); 0 zone resets clat (msec): min=121, max=1582, avg=390.75, stdev=439.32 lat (msec): min=121, max=1582, avg=391.04, stdev=439.26 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 127], | 30.00th=[ 163], 40.00th=[ 197], 50.00th=[ 226], 60.00th=[ 232], | 70.00th=[ 317], 80.00th=[ 397], 90.00th=[ 550], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 1924, max= 6119, per=63.92%, avg=2988.33, stdev=1695.59, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, 2000=16.67% cpu : usr=0.02%, sys=10.59%, ctx=333, 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=179567: Fri Sep 4 10:55:55 2026 read: IOPS=2, BW=2326KiB/s (2381kB/s)(6144KiB/2642msec) clat (usec): min=705, max=333893, avg=151575.74, stdev=150014.52 lat (usec): min=706, max=333894, avg=151577.02, stdev=150014.61 clat percentiles (usec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 2376], | 30.00th=[ 2376], 40.00th=[ 79168], 50.00th=[ 79168], 60.00th=[173016], | 70.00th=[320865], 80.00th=[320865], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 4071, max= 6131, per=100.00%, avg=5101.00, stdev=1456.64, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2326KiB/s (2381kB/s)(6144KiB/2642msec); 0 zone resets clat (msec): min=122, max=483, avg=283.53, stdev=131.10 lat (msec): min=122, max=483, avg=283.96, stdev=130.90 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 251], 50.00th=[ 251], 60.00th=[ 262], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 2035, max= 3011, per=48.83%, avg=2283.00, stdev=485.35, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=25.00%, 500=50.00% cpu : usr=0.00%, sys=18.89%, ctx=125, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179568: Fri Sep 4 10:55:55 2026 read: IOPS=0, BW=912KiB/s (934kB/s)(5120KiB/5616msec) clat (usec): min=644, max=266766, avg=128675.40, stdev=122108.56 lat (usec): min=646, max=266768, avg=128676.34, stdev=122108.40 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 644], | 30.00th=[ 734], 40.00th=[ 734], 50.00th=[166724], 60.00th=[166724], | 70.00th=[208667], 80.00th=[208667], 90.00th=[267387], 95.00th=[267387], | 99.00th=[267387], 99.50th=[267387], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 2019, max= 6119, per=100.00%, avg=4069.00, stdev=2899.14, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1276KiB/s (1307kB/s)(7168KiB/5616msec); 0 zone resets clat (msec): min=208, max=2814, avg=684.46, stdev=957.21 lat (msec): min=208, max=2814, avg=684.63, stdev=957.20 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 224], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 262], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 743], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 1992, max= 3806, per=52.71%, avg=2464.00, stdev=894.87, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 250=33.33%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.67%, ctx=289, 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=3340KiB/s (3420kB/s), 334KiB/s-2326KiB/s (342kB/s-2381kB/s), io=20.0MiB (20.0MB), run=2642-6132msec WRITE: bw=4676KiB/s (4788kB/s), 963KiB/s-2326KiB/s (986kB/s-2381kB/s), io=28.0MiB (29.4MB), run=2642-6132msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179569: Fri Sep 4 10:55:56 2026 read: IOPS=1, BW=1190KiB/s (1218kB/s)(7168KiB/6026msec) clat (msec): min=127, max=482, avg=233.20, stdev=141.09 lat (msec): min=127, max=482, avg=233.20, stdev=141.09 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 131], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 171], 60.00th=[ 207], | 70.00th=[ 207], 80.00th=[ 380], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 1872, max= 4047, per=79.16%, avg=2405.80, stdev=920.26, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=850KiB/s (870kB/s)(5120KiB/6026msec); 0 zone resets clat (msec): min=329, max=1627, avg=817.21, stdev=590.02 lat (msec): min=329, max=1627, avg=817.32, stdev=590.03 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 1917, max= 4055, per=62.58%, avg=2662.33, stdev=1207.08, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=41.67%, 500=41.67%, 2000=16.67% cpu : usr=0.00%, sys=4.51%, ctx=123, 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=179570: Fri Sep 4 10:55:56 2026 read: IOPS=0, BW=304KiB/s (311kB/s)(2048KiB/6739msec) clat (msec): min=184, max=2007, avg=1096.14, stdev=1288.90 lat (msec): min=184, max=2007, avg=1096.14, stdev=1288.90 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 2005], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 1917, max= 1917, per=63.08%, avg=1917.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1520KiB/s (1556kB/s)(10.0MiB/6739msec); 0 zone resets clat (msec): min=117, max=1114, avg=425.48, stdev=332.22 lat (msec): min=117, max=1114, avg=425.58, stdev=332.22 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 157], | 30.00th=[ 167], 40.00th=[ 226], 50.00th=[ 236], 60.00th=[ 300], | 70.00th=[ 527], 80.00th=[ 600], 90.00th=[ 818], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 2015, max= 6059, per=70.56%, avg=3001.83, stdev=1662.81, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.60, samples=6 lat (msec) : 250=50.00%, 500=8.33%, 750=16.67%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.24%, ctx=104, 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=179571: Fri Sep 4 10:55:56 2026 read: IOPS=0, BW=951KiB/s (974kB/s)(6144KiB/6459msec) clat (msec): min=94, max=1214, avg=352.61, stdev=431.05 lat (msec): min=94, max=1214, avg=352.61, stdev=431.05 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 259], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1917, max= 4071, per=87.78%, avg=2667.67, stdev=1216.31, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=951KiB/s (974kB/s)(6144KiB/6459msec); 0 zone resets clat (msec): min=123, max=2047, avg=665.08, stdev=696.15 lat (msec): min=124, max=2047, avg=665.41, stdev=696.03 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 510], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 1917, max= 2035, per=46.60%, avg=1982.20, stdev=59.94, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.68%, 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=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=179572: Fri Sep 4 10:55:56 2026 read: IOPS=0, BW=790KiB/s (809kB/s)(5120KiB/6480msec) clat (msec): min=109, max=839, avg=332.77, stdev=298.37 lat (msec): min=109, max=839, avg=332.77, stdev=298.37 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 110], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 201], 60.00th=[ 201], | 70.00th=[ 359], 80.00th=[ 359], 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= 2015, max= 4087, per=89.16%, avg=2709.67, stdev=1192.82, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1106KiB/s (1133kB/s)(7168KiB/6480msec); 0 zone resets clat (msec): min=239, max=2320, avg=674.67, stdev=744.00 lat (msec): min=239, max=2321, avg=674.80, stdev=744.02 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 342], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 693], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 1917, max= 3835, per=55.67%, avg=2368.20, stdev=821.42, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.72%, ctx=114, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3039KiB/s (3112kB/s), 304KiB/s-1190KiB/s (311kB/s-1218kB/s), io=20.0MiB (20.0MB), run=6026-6739msec WRITE: bw=4255KiB/s (4357kB/s), 850KiB/s-1520KiB/s (870kB/s-1556kB/s), io=28.0MiB (29.4MB), run=6026-6739msec 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=179585: Fri Sep 4 10:56:11 2026 read: IOPS=1, BW=4389KiB/s (4494kB/s)(12.0MiB/2800msec) clat (msec): min=809, max=1061, avg=911.84, stdev=132.26 lat (msec): min=809, max=1061, avg=911.85, stdev=132.26 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, 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=3.89%, ctx=47, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179587: Fri Sep 4 10:56:11 2026 read: IOPS=0, BW=1255KiB/s (1285kB/s)(4096KiB/3264msec) clat (nsec): min=937904k, max=937904k, avg=937903927.00, stdev= 0.00 lat (nsec): min=937907k, max=937907k, avg=937907381.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2510KiB/s (2570kB/s)(8192KiB/3264msec); 0 zone resets clat (msec): min=505, max=1752, avg=1129.00, stdev=881.78 lat (msec): min=505, max=1753, avg=1129.52, stdev=881.81 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 1754], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8126, max= 8126, per=92.15%, avg=8126.00, 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=0.03%, sys=4.54%, ctx=70, 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=179589: Fri Sep 4 10:56:11 2026 write: IOPS=0, BW=3307KiB/s (3386kB/s)(12.0MiB/3716msec); 0 zone resets clat (msec): min=205, max=1957, avg=1196.12, stdev=897.96 lat (msec): min=206, max=1959, avg=1197.21, stdev=898.48 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 1418], 50.00th=[ 1418], 60.00th=[ 1418], | 70.00th=[ 1955], 80.00th=[ 1955], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 8126, max= 8126, per=92.15%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.66%, 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=179591: Fri Sep 4 10:56:11 2026 write: IOPS=0, BW=3762KiB/s (3853kB/s)(12.0MiB/3266msec); 0 zone resets clat (msec): min=316, max=2203, avg=1062.44, stdev=1003.53 lat (msec): min=317, max=2203, avg=1063.57, stdev=1003.02 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8159, max= 8175, per=92.62%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.29%, ctx=64, 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=5020KiB/s (5140kB/s), 1255KiB/s-4389KiB/s (1285kB/s-4494kB/s), io=16.0MiB (16.8MB), run=2800-3264msec WRITE: bw=8818KiB/s (9030kB/s), 2510KiB/s-3762KiB/s (2570kB/s-3853kB/s), io=32.0MiB (33.6MB), run=3264-3716msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179584: Fri Sep 4 10:56:11 2026 read: IOPS=1, BW=4498KiB/s (4606kB/s)(12.0MiB/2732msec) clat (msec): min=669, max=1065, avg=885.18, stdev=200.45 lat (msec): min=669, max=1065, avg=885.18, stdev=200.45 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 1070], 80.00th=[ 1070], 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= 8015, max= 8159, per=100.00%, avg=8087.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=16.62%, ctx=310, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179586: Fri Sep 4 10:56:11 2026 read: IOPS=0, BW=1568KiB/s (1606kB/s)(4096KiB/2612msec) clat (nsec): min=649630k, max=649630k, avg=649630339.00, stdev= 0.00 lat (nsec): min=649634k, max=649634k, avg=649633578.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 5483, max= 5483, per=91.43%, avg=5483.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3136KiB/s (3212kB/s)(8192KiB/2612msec); 0 zone resets clat (msec): min=358, max=1550, avg=954.32, stdev=842.57 lat (msec): min=360, max=1552, avg=956.66, stdev=843.16 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 1552], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8159, max= 8159, per=95.45%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.79%, ctx=135, 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=179588: Fri Sep 4 10:56:11 2026 write: IOPS=0, BW=3206KiB/s (3283kB/s)(12.0MiB/3833msec); 0 zone resets clat (msec): min=171, max=1846, avg=1253.18, stdev=938.66 lat (msec): min=171, max=1847, avg=1254.22, stdev=939.23 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 1737], 50.00th=[ 1737], 60.00th=[ 1737], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8143, max= 8159, per=95.36%, avg=8151.00, 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=3.18%, ctx=41, 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=179590: Fri Sep 4 10:56:11 2026 write: IOPS=1, BW=4791KiB/s (4906kB/s)(12.0MiB/2565msec); 0 zone resets clat (msec): min=264, max=1757, avg=832.44, stdev=808.26 lat (msec): min=264, max=1758, avg=832.75, stdev=808.23 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 477], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 5936, max= 8159, per=82.45%, avg=7047.50, stdev=1571.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.67%, ctx=68, 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=5997KiB/s (6141kB/s), 1568KiB/s-4498KiB/s (1606kB/s-4606kB/s), io=16.0MiB (16.8MB), run=2612-2732msec WRITE: bw=8549KiB/s (8754kB/s), 3136KiB/s-4791KiB/s (3212kB/s-4906kB/s), io=32.0MiB (33.6MB), run=2565-3833msec