== sanity test 398b: DIO and buffer IO race ============== 14:11:00 (1788804660) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 9.38604 s, 5.4 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=179417: Mon Sep 7 14:13:51 2026 read: IOPS=10, BW=41.0KiB/s (42.0kB/s)(5992KiB/142795msec) clat (usec): min=37, max=352802, avg=52146.69, stdev=34531.79 lat (usec): min=37, max=352803, avg=52150.27, stdev=34532.50 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 15139], 10.00th=[ 19792], 20.00th=[ 26608], | 30.00th=[ 32375], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 51643], | 70.00th=[ 61604], 80.00th=[ 73925], 90.00th=[ 91751], 95.00th=[117965], | 99.00th=[168821], 99.50th=[193987], 99.90th=[304088], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 7, max= 103, per=25.09%, avg=41.64, stdev=17.27, samples=279 iops : min= 1, max= 25, avg= 9.75, stdev= 4.36, samples=279 write: IOPS=11, BW=44.1KiB/s (45.1kB/s)(6296KiB/142795msec); 0 zone resets clat (usec): min=854, max=1254.4k, avg=40707.61, stdev=53763.89 lat (usec): min=855, max=1254.4k, avg=40714.27, stdev=53769.42 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1369], 10.00th=[ 1713], | 20.00th=[ 4359], 30.00th=[ 8029], 40.00th=[ 17695], | 50.00th=[ 27919], 60.00th=[ 38011], 70.00th=[ 49021], | 80.00th=[ 67634], 90.00th=[ 98042], 95.00th=[ 124257], | 99.00th=[ 191890], 99.50th=[ 242222], 99.90th=[ 375391], | 99.95th=[1249903], 99.99th=[1249903] bw ( KiB/s): min= 7, max= 144, per=25.39%, avg=43.93, stdev=21.38, samples=278 iops : min= 1, max= 36, avg=10.32, stdev= 5.39, samples=278 lat (usec) : 50=0.03%, 100=1.17%, 250=0.13%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=5.79%, 4=3.81%, 10=6.93%, 20=8.30%, 50=38.05% lat (msec) : 100=26.92%, 250=8.30%, 500=0.33%, 2000=0.03% cpu : usr=0.09%, sys=4.40%, ctx=6493, 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=179418: Mon Sep 7 14:13:51 2026 read: IOPS=10, BW=41.3KiB/s (42.3kB/s)(5940KiB/143914msec) clat (usec): min=49, max=345572, avg=53550.91, stdev=35903.44 lat (usec): min=49, max=345573, avg=53558.75, stdev=35904.31 clat percentiles (usec): | 1.00th=[ 69], 5.00th=[ 13566], 10.00th=[ 19268], 20.00th=[ 26608], | 30.00th=[ 32900], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 54789], | 70.00th=[ 63177], 80.00th=[ 74974], 90.00th=[ 93848], 95.00th=[112722], | 99.00th=[179307], 99.50th=[240124], 99.90th=[308282], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 7, max= 88, per=24.78%, avg=41.14, stdev=17.39, samples=281 iops : min= 1, max= 22, avg= 9.62, stdev= 4.39, samples=281 write: IOPS=11, BW=44.1KiB/s (45.2kB/s)(6348KiB/143914msec); 0 zone resets clat (usec): min=737, max=1308.2k, avg=40234.29, stdev=51802.26 lat (usec): min=738, max=1308.2k, avg=40239.92, stdev=51801.90 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1352], 10.00th=[ 1614], | 20.00th=[ 4178], 30.00th=[ 8717], 40.00th=[ 17695], | 50.00th=[ 28181], 60.00th=[ 38536], 70.00th=[ 50594], | 80.00th=[ 68682], 90.00th=[ 95945], 95.00th=[ 122160], | 99.00th=[ 175113], 99.50th=[ 217056], 99.90th=[ 283116], | 99.95th=[1300235], 99.99th=[1300235] bw ( KiB/s): min= 7, max= 156, per=25.44%, avg=44.01, stdev=20.90, samples=281 iops : min= 1, max= 39, avg=10.35, stdev= 5.26, samples=281 lat (usec) : 50=0.03%, 100=1.50%, 250=0.10%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=6.09%, 4=3.81%, 10=6.51%, 20=8.79%, 50=34.90% lat (msec) : 100=29.36%, 250=8.27%, 500=0.33%, 2000=0.03% cpu : usr=0.09%, sys=4.54%, ctx=6481, 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=179419: Mon Sep 7 14:13:51 2026 read: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6028KiB/143962msec) clat (usec): min=38, max=273472, avg=52560.30, stdev=35501.72 lat (usec): min=39, max=273474, avg=52566.52, stdev=35503.29 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 12256], 10.00th=[ 19268], 20.00th=[ 26346], | 30.00th=[ 31851], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 52691], | 70.00th=[ 62653], 80.00th=[ 76022], 90.00th=[ 94897], 95.00th=[116917], | 99.00th=[177210], 99.50th=[200279], 99.90th=[267387], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7, max= 95, per=25.08%, avg=41.63, stdev=17.46, samples=282 iops : min= 1, max= 23, avg= 9.74, stdev= 4.40, samples=282 write: IOPS=10, BW=43.5KiB/s (44.5kB/s)(6260KiB/143962msec); 0 zone resets clat (usec): min=825, max=1216.0k, avg=41030.82, stdev=51950.90 lat (usec): min=826, max=1216.0k, avg=41035.34, stdev=51950.77 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1385], 10.00th=[ 1696], | 20.00th=[ 4080], 30.00th=[ 8979], 40.00th=[ 18744], | 50.00th=[ 28443], 60.00th=[ 38536], 70.00th=[ 51119], | 80.00th=[ 69731], 90.00th=[ 94897], 95.00th=[ 124257], | 99.00th=[ 191890], 99.50th=[ 206570], 99.90th=[ 316670], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 127, per=24.98%, avg=43.22, stdev=21.24, samples=282 iops : min= 1, max= 31, avg=10.14, stdev= 5.34, samples=282 lat (usec) : 50=0.13%, 100=1.37%, 250=0.26%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=5.96%, 4=3.78%, 10=6.41%, 20=8.01%, 50=37.70% lat (msec) : 100=27.64%, 250=8.33%, 500=0.23%, 2000=0.03% cpu : usr=0.10%, sys=4.39%, ctx=6486, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179420: Mon Sep 7 14:13:51 2026 read: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6052KiB/144603msec) clat (usec): min=37, max=307373, avg=53780.27, stdev=35190.67 lat (usec): min=38, max=307376, avg=53782.03, stdev=35190.75 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 13173], 10.00th=[ 20055], 20.00th=[ 27395], | 30.00th=[ 33162], 40.00th=[ 39584], 50.00th=[ 46400], 60.00th=[ 54789], | 70.00th=[ 64226], 80.00th=[ 77071], 90.00th=[ 96994], 95.00th=[117965], | 99.00th=[181404], 99.50th=[200279], 99.90th=[274727], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 111, per=25.09%, avg=41.65, stdev=17.67, samples=282 iops : min= 1, max= 27, avg= 9.75, stdev= 4.44, samples=282 write: IOPS=10, BW=43.1KiB/s (44.2kB/s)(6236KiB/144603msec); 0 zone resets clat (usec): min=761, max=1226.2k, avg=40161.91, stdev=52243.09 lat (usec): min=762, max=1226.2k, avg=40175.13, stdev=52245.08 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1418], 10.00th=[ 1745], | 20.00th=[ 4228], 30.00th=[ 8717], 40.00th=[ 17957], | 50.00th=[ 26870], 60.00th=[ 36963], 70.00th=[ 48497], | 80.00th=[ 66323], 90.00th=[ 98042], 95.00th=[ 122160], | 99.00th=[ 177210], 99.50th=[ 229639], 99.90th=[ 383779], | 99.95th=[1233126], 99.99th=[1233126] bw ( KiB/s): min= 7, max= 126, per=24.76%, avg=42.84, stdev=20.77, samples=282 iops : min= 1, max= 31, avg=10.05, stdev= 5.24, samples=282 lat (usec) : 50=0.03%, 100=1.40%, 250=0.16%, 500=0.07%, 1000=0.26% lat (msec) : 2=5.57%, 4=3.81%, 10=6.80%, 20=7.94%, 50=36.72% lat (msec) : 100=28.09%, 250=8.89%, 500=0.23%, 2000=0.03% cpu : usr=0.09%, sys=4.32%, ctx=6603, 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=166KiB/s (170kB/s), 41.3KiB/s-41.0KiB/s (42.3kB/s-42.0kB/s), io=23.4MiB (24.6MB), run=142795-144603msec WRITE: bw=174KiB/s (178kB/s), 43.1KiB/s-44.1KiB/s (44.2kB/s-45.2kB/s), io=24.6MiB (25.7MB), run=142795-144603msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179422: Mon Sep 7 14:14:37 2026 read: IOPS=7, BW=31.8KiB/s (32.6kB/s)(5992KiB/188213msec) clat (msec): min=5, max=1221, avg=51.28, stdev=58.46 lat (msec): min=5, max=1221, avg=51.29, stdev=58.46 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 70], 90.00th=[ 112], 95.00th=[ 159], | 99.00th=[ 255], 99.50th=[ 309], 99.90th=[ 359], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7, max= 119, per=25.70%, avg=32.39, stdev=22.09, samples=358 iops : min= 1, max= 29, avg= 7.42, stdev= 5.53, samples=358 write: IOPS=8, BW=33.5KiB/s (34.3kB/s)(6296KiB/188213msec); 0 zone resets clat (msec): min=10, max=507, avg=70.61, stdev=51.67 lat (msec): min=10, max=507, avg=70.62, stdev=51.66 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 82], 80.00th=[ 101], 90.00th=[ 136], 95.00th=[ 169], | 99.00th=[ 266], 99.50th=[ 342], 99.90th=[ 451], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 103, per=25.45%, avg=33.60, stdev=20.85, samples=362 iops : min= 1, max= 25, avg= 7.74, stdev= 5.24, samples=362 lat (msec) : 10=1.33%, 20=11.00%, 50=45.54%, 100=25.65%, 250=15.40% lat (msec) : 500=1.01%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=1.55%, ctx=4675, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179423: Mon Sep 7 14:14:37 2026 read: IOPS=7, BW=31.4KiB/s (32.1kB/s)(5940KiB/189436msec) clat (msec): min=5, max=1306, avg=50.23, stdev=57.09 lat (msec): min=5, max=1306, avg=50.24, stdev=57.09 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 69], 90.00th=[ 113], 95.00th=[ 153], | 99.00th=[ 230], 99.50th=[ 262], 99.90th=[ 359], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 110, per=25.96%, avg=32.71, stdev=22.28, samples=349 iops : min= 1, max= 27, avg= 7.51, stdev= 5.59, samples=349 write: IOPS=8, BW=33.5KiB/s (34.3kB/s)(6348KiB/189436msec); 0 zone resets clat (msec): min=7, max=531, avg=72.19, stdev=53.29 lat (msec): min=7, max=531, avg=72.19, stdev=53.29 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 85], 80.00th=[ 108], 90.00th=[ 140], 95.00th=[ 176], | 99.00th=[ 257], 99.50th=[ 305], 99.90th=[ 430], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 7, max= 135, per=25.10%, avg=33.13, stdev=21.46, samples=367 iops : min= 1, max= 33, avg= 7.61, stdev= 5.39, samples=367 lat (msec) : 10=1.99%, 20=11.26%, 50=44.34%, 100=24.58%, 250=16.99% lat (msec) : 500=0.78%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=1.57%, ctx=4735, 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=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=179424: Mon Sep 7 14:14:37 2026 read: IOPS=7, BW=31.9KiB/s (32.7kB/s)(6028KiB/188677msec) clat (msec): min=5, max=313, avg=48.41, stdev=45.81 lat (msec): min=5, max=313, avg=48.42, stdev=45.81 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 108], 95.00th=[ 144], | 99.00th=[ 234], 99.50th=[ 279], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 120, per=25.75%, avg=32.45, stdev=21.43, samples=359 iops : min= 1, max= 30, avg= 7.45, stdev= 5.39, samples=359 write: IOPS=8, BW=33.2KiB/s (33.0kB/s)(6260KiB/188677msec); 0 zone resets clat (msec): min=10, max=1465, avg=73.83, stdev=64.59 lat (msec): min=10, max=1465, avg=73.83, stdev=64.59 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 82], 80.00th=[ 105], 90.00th=[ 144], 95.00th=[ 186], | 99.00th=[ 275], 99.50th=[ 313], 99.90th=[ 439], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7, max= 103, per=25.08%, avg=33.10, stdev=21.27, samples=366 iops : min= 1, max= 25, avg= 7.60, stdev= 5.34, samples=366 lat (msec) : 10=0.85%, 20=11.88%, 50=44.69%, 100=25.65%, 250=15.76% lat (msec) : 500=1.14%, 2000=0.03% cpu : usr=0.06%, sys=1.57%, ctx=4606, 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=179425: Mon Sep 7 14:14:37 2026 read: IOPS=8, BW=32.2KiB/s (32.0kB/s)(6052KiB/187844msec) clat (msec): min=6, max=345, avg=48.74, stdev=45.44 lat (msec): min=6, max=345, avg=48.74, stdev=45.44 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 68], 90.00th=[ 109], 95.00th=[ 153], | 99.00th=[ 215], 99.50th=[ 243], 99.90th=[ 326], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 126, per=26.55%, avg=33.45, stdev=22.07, samples=350 iops : min= 1, max= 31, avg= 7.69, stdev= 5.54, samples=350 write: IOPS=8, BW=33.2KiB/s (33.0kB/s)(6236KiB/187844msec); 0 zone resets clat (msec): min=12, max=1436, avg=73.07, stdev=63.06 lat (msec): min=12, max=1436, avg=73.07, stdev=63.06 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 82], 80.00th=[ 106], 90.00th=[ 138], 95.00th=[ 180], | 99.00th=[ 279], 99.50th=[ 309], 99.90th=[ 422], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 103, per=25.07%, avg=33.09, stdev=20.47, samples=364 iops : min= 1, max= 25, avg= 7.60, stdev= 5.14, samples=364 lat (msec) : 10=1.17%, 20=11.07%, 50=45.51%, 100=25.75%, 250=15.49% lat (msec) : 500=0.98%, 2000=0.03% cpu : usr=0.07%, sys=1.56%, ctx=4648, 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=127KiB/s (130kB/s), 31.4KiB/s-32.2KiB/s (32.1kB/s-32.0kB/s), io=23.4MiB (24.6MB), run=187844-189436msec WRITE: bw=133KiB/s (136kB/s), 33.2KiB/s-33.5KiB/s (33.0kB/s-34.3kB/s), io=24.6MiB (25.7MB), run=187844-189436msec 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=179474: Mon Sep 7 14:15:31 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5920KiB/35127msec) clat (usec): min=38, max=220130, avg=49792.92, stdev=30401.54 lat (usec): min=38, max=220132, avg=49794.33, stdev=30401.59 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 72], 10.00th=[ 619], 20.00th=[ 27919], | 30.00th=[ 34866], 40.00th=[ 42206], 50.00th=[ 47973], 60.00th=[ 53216], | 70.00th=[ 60556], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[103285], | 99.00th=[137364], 99.50th=[162530], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 58, max= 318, per=25.38%, avg=168.52, stdev=58.62, samples=69 iops : min= 3, max= 19, avg= 9.75, stdev= 3.68, samples=69 write: IOPS=11, BW=181KiB/s (186kB/s)(6368KiB/35127msec); 0 zone resets clat (usec): min=1383, max=203478, avg=40757.08, stdev=40497.07 lat (usec): min=1385, max=203480, avg=40770.08, stdev=40489.37 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2114], 10.00th=[ 3064], 20.00th=[ 6063], | 30.00th=[ 11338], 40.00th=[ 20579], 50.00th=[ 27395], 60.00th=[ 39060], | 70.00th=[ 51643], 80.00th=[ 72877], 90.00th=[ 95945], 95.00th=[117965], | 99.00th=[189793], 99.50th=[200279], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 447, per=26.38%, avg=184.10, stdev=77.56, samples=68 iops : min= 1, max= 27, avg=10.74, stdev= 4.90, samples=68 lat (usec) : 50=0.13%, 100=4.30%, 250=0.13%, 500=0.13%, 750=0.13% lat (msec) : 2=2.60%, 4=4.43%, 10=7.94%, 20=7.29%, 50=34.11% lat (msec) : 100=31.25%, 250=7.55% cpu : usr=0.06%, sys=4.85%, ctx=1675, 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=179475: Mon Sep 7 14:15:31 2026 read: IOPS=9, BW=159KiB/s (163kB/s)(5744KiB/36069msec) clat (usec): min=46, max=203814, avg=52054.98, stdev=32522.95 lat (usec): min=47, max=203815, avg=52057.39, stdev=32523.74 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 121], 10.00th=[ 21103], 20.00th=[ 27657], | 30.00th=[ 34341], 40.00th=[ 39584], 50.00th=[ 46400], 60.00th=[ 52167], | 70.00th=[ 60031], 80.00th=[ 72877], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[168821], 99.50th=[181404], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 350, per=24.00%, avg=159.35, stdev=73.51, samples=71 iops : min= 1, max= 21, avg= 9.17, stdev= 4.64, samples=71 write: IOPS=11, BW=181KiB/s (186kB/s)(6544KiB/36069msec); 0 zone resets clat (usec): min=1644, max=294739, avg=42008.81, stdev=41456.16 lat (usec): min=1647, max=294740, avg=42030.37, stdev=41499.95 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2114], 10.00th=[ 3982], 20.00th=[ 7111], | 30.00th=[ 12911], 40.00th=[ 24249], 50.00th=[ 30802], 60.00th=[ 40109], | 70.00th=[ 51119], 80.00th=[ 69731], 90.00th=[ 98042], 95.00th=[119014], | 99.00th=[173016], 99.50th=[235930], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 31, max= 351, per=25.92%, avg=180.90, stdev=70.35, samples=71 iops : min= 1, max= 21, avg=10.55, stdev= 4.42, samples=71 lat (usec) : 50=0.13%, 100=1.69%, 250=0.78% lat (msec) : 2=2.21%, 4=3.12%, 10=8.59%, 20=6.90%, 50=39.45% lat (msec) : 100=28.78%, 250=8.07%, 500=0.26% cpu : usr=0.07%, sys=5.14%, ctx=1732, 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=179476: Mon Sep 7 14:15:31 2026 read: IOPS=11, BW=177KiB/s (181kB/s)(6256KiB/35361msec) clat (usec): min=40, max=179206, avg=51793.44, stdev=32968.83 lat (usec): min=40, max=179208, avg=51794.84, stdev=32968.88 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 72], 10.00th=[ 16909], 20.00th=[ 25822], | 30.00th=[ 32637], 40.00th=[ 40109], 50.00th=[ 46400], 60.00th=[ 55313], | 70.00th=[ 65799], 80.00th=[ 78119], 90.00th=[ 91751], 95.00th=[111674], | 99.00th=[164627], 99.50th=[177210], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 58, max= 412, per=26.68%, avg=177.13, stdev=66.07, samples=69 iops : min= 3, max= 25, avg=10.30, stdev= 4.15, samples=69 write: IOPS=10, BW=171KiB/s (175kB/s)(6032KiB/35361msec); 0 zone resets clat (usec): min=1360, max=218448, avg=39300.46, stdev=39188.94 lat (usec): min=1362, max=218452, avg=39303.03, stdev=39188.96 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1778], 10.00th=[ 2835], 20.00th=[ 5604], | 30.00th=[ 9503], 40.00th=[ 19792], 50.00th=[ 28967], 60.00th=[ 38011], | 70.00th=[ 50594], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[127402], | 99.00th=[166724], 99.50th=[173016], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 378, per=24.05%, avg=167.84, stdev=69.45, samples=69 iops : min= 1, max= 23, avg= 9.72, stdev= 4.39, samples=69 lat (usec) : 50=0.65%, 100=3.26%, 250=0.26% lat (msec) : 2=3.39%, 4=3.91%, 10=8.07%, 20=6.90%, 50=35.81% lat (msec) : 100=30.21%, 250=7.55% cpu : usr=0.07%, sys=5.02%, ctx=1746, 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=179477: Mon Sep 7 14:15:31 2026 read: IOPS=11, BW=178KiB/s (182kB/s)(6032KiB/33884msec) clat (usec): min=43, max=236337, avg=49701.80, stdev=33016.15 lat (usec): min=44, max=236338, avg=49726.40, stdev=33013.24 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 71], 10.00th=[ 15270], 20.00th=[ 27132], | 30.00th=[ 32900], 40.00th=[ 36963], 50.00th=[ 44827], 60.00th=[ 52691], | 70.00th=[ 60556], 80.00th=[ 69731], 90.00th=[ 89654], 95.00th=[103285], | 99.00th=[168821], 99.50th=[214959], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 31, max= 319, per=26.79%, avg=177.91, stdev=65.01, samples=65 iops : min= 1, max= 19, avg=10.35, stdev= 4.10, samples=65 write: IOPS=11, BW=185KiB/s (189kB/s)(6256KiB/33884msec); 0 zone resets clat (usec): min=1579, max=251406, avg=37611.38, stdev=40106.91 lat (usec): min=1581, max=251409, avg=37617.33, stdev=40106.49 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1926], 10.00th=[ 2769], 20.00th=[ 5211], | 30.00th=[ 8979], 40.00th=[ 14222], 50.00th=[ 25035], 60.00th=[ 33424], | 70.00th=[ 48497], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[114820], | 99.00th=[166724], 99.50th=[221250], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 446, per=26.15%, avg=182.50, stdev=90.10, samples=66 iops : min= 1, max= 27, avg=10.64, stdev= 5.63, samples=66 lat (usec) : 50=0.26%, 100=3.12%, 250=0.26%, 750=0.13%, 1000=0.13% lat (msec) : 2=3.12%, 4=4.69%, 10=9.11%, 20=8.59%, 50=35.29% lat (msec) : 100=28.13%, 250=7.03%, 500=0.13% cpu : usr=0.08%, sys=5.16%, ctx=1712, 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=664KiB/s (680kB/s), 159KiB/s-178KiB/s (163kB/s-182kB/s), io=23.4MiB (24.5MB), run=33884-36069msec WRITE: bw=699KiB/s (715kB/s), 171KiB/s-185KiB/s (175kB/s-189kB/s), io=24.6MiB (25.8MB), run=33884-36069msec fio: pid=179473, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=179470: Mon Sep 7 14:15:41 2026 read: IOPS=8, BW=128KiB/s (131kB/s)(5920KiB/46230msec) clat (msec): min=6, max=283, avg=49.24, stdev=44.17 lat (msec): min=6, max=283, avg=49.25, stdev=44.17 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 53], 80.00th=[ 71], 90.00th=[ 118], 95.00th=[ 140], | 99.00th=[ 207], 99.50th=[ 266], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 382, per=26.60%, avg=128.76, stdev=86.45, samples=89 iops : min= 1, max= 23, avg= 7.18, stdev= 5.44, samples=89 write: IOPS=8, BW=138KiB/s (141kB/s)(6368KiB/46230msec); 0 zone resets clat (msec): min=11, max=311, avg=69.82, stdev=46.43 lat (msec): min=11, max=311, avg=69.83, stdev=46.44 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 55], 60.00th=[ 68], | 70.00th=[ 87], 80.00th=[ 110], 90.00th=[ 140], 95.00th=[ 163], | 99.00th=[ 211], 99.50th=[ 222], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 414, per=26.47%, avg=136.07, stdev=85.05, samples=91 iops : min= 1, max= 25, avg= 7.65, stdev= 5.36, samples=91 lat (msec) : 10=1.95%, 20=12.50%, 50=42.32%, 100=25.78%, 250=17.06% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.60%, ctx=1198, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179471: Mon Sep 7 14:15:41 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5744KiB/45874msec) clat (msec): min=6, max=282, avg=47.96, stdev=42.10 lat (msec): min=6, max=282, avg=47.96, stdev=42.10 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 69], 90.00th=[ 112], 95.00th=[ 142], | 99.00th=[ 192], 99.50th=[ 222], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 477, per=25.65%, avg=124.16, stdev=88.76, samples=90 iops : min= 1, max= 29, avg= 6.90, stdev= 5.59, samples=90 write: IOPS=8, BW=143KiB/s (146kB/s)(6544KiB/45874msec); 0 zone resets clat (msec): min=12, max=326, avg=69.55, stdev=49.07 lat (msec): min=12, max=326, avg=69.55, stdev=49.07 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 67], | 70.00th=[ 83], 80.00th=[ 102], 90.00th=[ 133], 95.00th=[ 167], | 99.00th=[ 222], 99.50th=[ 313], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 479, per=27.90%, avg=143.40, stdev=89.49, samples=89 iops : min= 1, max= 29, avg= 8.11, stdev= 5.62, samples=89 lat (msec) : 10=1.43%, 20=10.16%, 50=46.09%, 100=25.78%, 250=16.02% lat (msec) : 500=0.52% cpu : usr=0.04%, sys=1.72%, ctx=1211, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179472: Mon Sep 7 14:15:41 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6256KiB/46027msec) clat (msec): min=5, max=262, avg=48.79, stdev=42.88 lat (msec): min=5, max=262, avg=48.80, stdev=42.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 67], 90.00th=[ 117], 95.00th=[ 153], | 99.00th=[ 197], 99.50th=[ 199], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 476, per=28.34%, avg=137.16, stdev=97.50, samples=90 iops : min= 1, max= 29, avg= 7.72, stdev= 6.13, samples=90 write: IOPS=8, BW=131KiB/s (134kB/s)(6032KiB/46027msec); 0 zone resets clat (msec): min=11, max=334, avg=70.55, stdev=50.06 lat (msec): min=11, max=334, avg=70.56, stdev=50.07 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 47], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 82], 80.00th=[ 106], 90.00th=[ 144], 95.00th=[ 167], | 99.00th=[ 249], 99.50th=[ 326], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 351, per=25.67%, avg=131.94, stdev=77.98, samples=90 iops : min= 1, max= 21, avg= 7.39, stdev= 4.90, samples=90 lat (msec) : 10=1.69%, 20=11.59%, 50=44.27%, 100=25.91%, 250=16.02% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.66%, ctx=1212, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179473: Mon Sep 7 14:15:41 2026 read: IOPS=6, BW=110KiB/s (113kB/s)(4480KiB/40547msec) clat (msec): min=9, max=210, avg=56.91, stdev=42.09 lat (msec): min=9, max=210, avg=56.91, stdev=42.09 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 51], | 70.00th=[ 63], 80.00th=[ 92], 90.00th=[ 121], 95.00th=[ 146], | 99.00th=[ 203], 99.50th=[ 205], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 31, max= 349, per=23.22%, avg=112.40, stdev=62.94, samples=78 iops : min= 1, max= 21, avg= 6.15, stdev= 3.97, samples=78 write: IOPS=7, BW=120KiB/s (122kB/s)(4848KiB/40547msec); 0 zone resets clat (msec): min=12, max=336, avg=80.99, stdev=53.48 lat (msec): min=12, max=336, avg=81.00, stdev=53.49 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 39], | 30.00th=[ 46], 40.00th=[ 57], 50.00th=[ 68], 60.00th=[ 80], | 70.00th=[ 95], 80.00th=[ 117], 90.00th=[ 153], 95.00th=[ 186], | 99.00th=[ 271], 99.50th=[ 321], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 540, per=22.99%, avg=118.17, stdev=75.73, samples=80 iops : min= 1, max= 33, avg= 6.54, stdev= 4.79, samples=80 lat (msec) : 10=0.34%, 20=5.14%, 50=40.58%, 100=32.36%, 250=20.72% lat (msec) : 500=0.68% cpu : usr=0.06%, sys=1.38%, ctx=759, majf=0, minf=19 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=281,303,0,0 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=485KiB/s (496kB/s), 110KiB/s-136KiB/s (113kB/s-139kB/s), io=21.9MiB (22.9MB), run=40547-46230msec WRITE: bw=515KiB/s (527kB/s), 120KiB/s-143KiB/s (122kB/s-146kB/s), io=23.2MiB (24.4MB), run=40547-46230msec 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=179495: Mon Sep 7 14:15:57 2026 read: IOPS=1, BW=1937KiB/s (1983kB/s)(7168KiB/3701msec) clat (usec): min=691, max=508081, avg=252183.94, stdev=189533.45 lat (usec): min=693, max=508083, avg=252185.37, stdev=189533.66 clat percentiles (usec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 4293], | 30.00th=[240124], 40.00th=[240124], 50.00th=[295699], 60.00th=[333448], | 70.00th=[333448], 80.00th=[379585], 90.00th=[509608], 95.00th=[509608], | 99.00th=[509608], 99.50th=[509608], 99.90th=[509608], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 1620, max= 4071, per=50.67%, avg=2395.00, stdev=1127.78, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1383KiB/s (1417kB/s)(5120KiB/3701msec); 0 zone resets clat (msec): min=171, max=580, avg=337.15, stdev=150.79 lat (msec): min=171, max=580, avg=337.23, stdev=150.79 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1935, max= 4015, per=44.95%, avg=2975.00, stdev=1470.78, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=16.67%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=12.51%, ctx=181, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179496: Mon Sep 7 14:15:57 2026 read: IOPS=0, BW=473KiB/s (484kB/s)(2048KiB/4332msec) clat (msec): min=71, max=317, avg=194.56, stdev=173.86 lat (msec): min=71, max=317, avg=194.56, stdev=173.86 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 72], 40.00th=[ 72], 50.00th=[ 72], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 1602, max= 2023, per=38.34%, avg=1812.50, stdev=297.69, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2364KiB/s (2421kB/s)(10.0MiB/4332msec); 0 zone resets clat (msec): min=225, max=540, avg=375.26, stdev=98.18 lat (msec): min=225, max=540, avg=375.38, stdev=98.18 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 253], | 30.00th=[ 296], 40.00th=[ 342], 50.00th=[ 384], 60.00th=[ 401], | 70.00th=[ 405], 80.00th=[ 451], 90.00th=[ 460], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1954, max= 4023, per=38.75%, avg=2564.57, stdev=945.82, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 100=8.33%, 250=8.33%, 500=75.00%, 750=8.33% cpu : usr=0.00%, sys=12.17%, ctx=186, 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=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=179497: Mon Sep 7 14:15:57 2026 read: IOPS=1, BW=1755KiB/s (1798kB/s)(6144KiB/3500msec) clat (usec): min=548, max=293444, avg=138772.63, stdev=122603.55 lat (usec): min=550, max=293445, avg=138773.79, stdev=122603.60 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 4555], | 30.00th=[ 4555], 40.00th=[135267], 50.00th=[135267], 60.00th=[141558], | 70.00th=[256902], 80.00th=[256902], 90.00th=[291505], 95.00th=[291505], | 99.00th=[291505], 99.50th=[291505], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 2007, max= 4047, per=69.99%, avg=3308.33, stdev=1130.42, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1755KiB/s (1798kB/s)(6144KiB/3500msec); 0 zone resets clat (msec): min=278, max=738, avg=427.89, stdev=171.07 lat (msec): min=278, max=738, avg=427.96, stdev=171.07 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 430], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1551, max= 2023, per=28.62%, avg=1894.00, stdev=195.15, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=16.67%, 500=58.33%, 750=8.33% cpu : usr=0.00%, sys=11.66%, ctx=152, 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=179498: Mon Sep 7 14:15:57 2026 read: IOPS=1, BW=1341KiB/s (1374kB/s)(5120KiB/3817msec) clat (usec): min=498, max=286231, avg=88667.08, stdev=128850.79 lat (usec): min=500, max=286232, avg=88667.91, stdev=128850.96 clat percentiles (usec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 1090], 40.00th=[ 1090], 50.00th=[ 1270], 60.00th=[ 1270], | 70.00th=[154141], 80.00th=[154141], 90.00th=[287310], 95.00th=[287310], | 99.00th=[287310], 99.50th=[287310], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1878KiB/s (1923kB/s)(7168KiB/3817msec); 0 zone resets clat (msec): min=193, max=718, avg=430.07, stdev=188.60 lat (msec): min=194, max=718, avg=430.23, stdev=188.48 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 275], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 376], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 567], 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= 1935, max= 4071, per=36.20%, avg=2395.60, stdev=937.16, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 2=16.67%, 250=16.67%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=11.82%, ctx=195, 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=4728KiB/s (4841kB/s), 473KiB/s-1937KiB/s (484kB/s-1983kB/s), io=20.0MiB (20.0MB), run=3500-4332msec WRITE: bw=6619KiB/s (6777kB/s), 1383KiB/s-2364KiB/s (1417kB/s-2421kB/s), io=28.0MiB (29.4MB), run=3500-4332msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179490: Mon Sep 7 14:15:58 2026 read: IOPS=1, BW=1948KiB/s (1995kB/s)(7168KiB/3679msec) clat (msec): min=70, max=933, avg=265.56, stdev=297.62 lat (msec): min=70, max=933, avg=265.56, stdev=297.62 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 136], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 174], 60.00th=[ 178], | 70.00th=[ 178], 80.00th=[ 203], 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= 3778, max= 4876, per=100.00%, avg=4327.00, stdev=776.40, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1392KiB/s (1425kB/s)(5120KiB/3679msec); 0 zone resets clat (msec): min=113, max=576, avg=352.01, stdev=176.18 lat (msec): min=113, max=576, avg=352.21, stdev=176.27 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 2031, max= 6119, per=72.50%, avg=4075.00, stdev=2890.65, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=3.51%, ctx=74, 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=179492: Mon Sep 7 14:15:58 2026 read: IOPS=0, BW=411KiB/s (421kB/s)(2048KiB/4986msec) clat (msec): min=122, max=386, avg=254.42, stdev=186.26 lat (msec): min=122, max=386, avg=254.42, stdev=186.26 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1684, max= 2027, per=46.21%, avg=1855.50, stdev=242.54, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2054KiB/s (2103kB/s)(10.0MiB/4986msec); 0 zone resets clat (msec): min=154, max=945, avg=431.64, stdev=285.87 lat (msec): min=154, max=945, avg=431.81, stdev=285.82 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 157], | 30.00th=[ 163], 40.00th=[ 190], 50.00th=[ 401], 60.00th=[ 456], | 70.00th=[ 498], 80.00th=[ 502], 90.00th=[ 852], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1684, max= 4063, per=39.59%, avg=2225.43, stdev=820.57, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=41.67%, 500=41.67%, 1000=16.67% cpu : usr=0.00%, sys=3.67%, ctx=97, 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=179493: Mon Sep 7 14:15:58 2026 read: IOPS=1, BW=1205KiB/s (1234kB/s)(6144KiB/5100msec) clat (msec): min=155, max=453, avg=299.06, stdev=126.36 lat (msec): min=155, max=453, avg=299.06, stdev=126.36 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 249], 50.00th=[ 249], 60.00th=[ 288], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1973, max= 2039, per=50.10%, avg=2011.50, stdev=28.86, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1205KiB/s (1234kB/s)(6144KiB/5100msec); 0 zone resets clat (msec): min=68, max=845, avg=502.24, stdev=306.12 lat (msec): min=68, max=845, avg=502.32, stdev=306.14 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 667], | 70.00th=[ 776], 80.00th=[ 776], 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= 1805, max= 3778, per=42.79%, avg=2405.25, stdev=920.76, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=3.51%, ctx=80, 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=179494: Mon Sep 7 14:15:58 2026 read: IOPS=1, BW=1075KiB/s (1101kB/s)(5120KiB/4761msec) clat (msec): min=121, max=458, avg=198.57, stdev=145.81 lat (msec): min=121, max=458, avg=198.57, stdev=145.81 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 122], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 146], 80.00th=[ 146], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1889, max= 4079, per=66.38%, avg=2665.00, stdev=1226.50, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1506KiB/s (1542kB/s)(7168KiB/4761msec); 0 zone resets clat (msec): min=187, max=875, avg=503.00, stdev=283.37 lat (msec): min=187, max=876, avg=503.22, stdev=283.58 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 251], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 422], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 869], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1662, max= 4063, per=41.89%, avg=2354.75, stdev=1142.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=3.19%, ctx=77, 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=4016KiB/s (4112kB/s), 411KiB/s-1948KiB/s (421kB/s-1995kB/s), io=20.0MiB (20.0MB), run=3679-5100msec WRITE: bw=5622KiB/s (5757kB/s), 1205KiB/s-2054KiB/s (1234kB/s-2103kB/s), io=28.0MiB (29.4MB), run=3679-5100msec 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=179505: Mon Sep 7 14:16:14 2026 read: IOPS=0, BW=4081KiB/s (4179kB/s)(12.0MiB/3011msec) clat (msec): min=829, max=1057, avg=978.82, stdev=129.19 lat (msec): min=829, max=1057, avg=978.83, stdev=129.19 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 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= 7757, max= 8110, per=100.00%, avg=7933.50, stdev=249.61, 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=0.00%, sys=13.79%, ctx=200, 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=179507: Mon Sep 7 14:16:14 2026 read: IOPS=0, BW=1198KiB/s (1227kB/s)(4096KiB/3419msec) clat (nsec): min=842952k, max=842952k, avg=842952129.00, stdev= 0.00 lat (nsec): min=842954k, max=842954k, avg=842954414.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 844], 5.00th=[ 844], 10.00th=[ 844], 20.00th=[ 844], | 30.00th=[ 844], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 844], 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= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2396KiB/s (2454kB/s)(8192KiB/3419msec); 0 zone resets clat (msec): min=1189, max=1329, avg=1259.12, stdev=98.93 lat (msec): min=1189, max=1329, avg=1259.44, stdev=98.83 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1334], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7968, max= 7968, per=83.14%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.17%, ctx=74, 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=179508: Mon Sep 7 14:16:14 2026 write: IOPS=0, BW=3663KiB/s (3750kB/s)(12.0MiB/3355msec); 0 zone resets clat (msec): min=949, max=1206, avg=1095.68, stdev=132.30 lat (msec): min=949, max=1208, avg=1096.57, stdev=132.81 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7846, max= 8192, per=83.67%, avg=8019.00, stdev=244.66, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.99%, ctx=56, 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=179509: Mon Sep 7 14:16:14 2026 write: IOPS=0, BW=4080KiB/s (4178kB/s)(12.0MiB/3012msec); 0 zone resets clat (msec): min=659, max=1226, avg=979.72, stdev=290.76 lat (msec): min=661, max=1226, avg=980.54, stdev=289.81 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7968, max= 8047, per=83.55%, avg=8007.50, stdev=55.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.59%, ctx=56, 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=4792KiB/s (4907kB/s), 1198KiB/s-4081KiB/s (1227kB/s-4179kB/s), io=16.0MiB (16.8MB), run=3011-3419msec WRITE: bw=9584KiB/s (9814kB/s), 2396KiB/s-4080KiB/s (2454kB/s-4178kB/s), io=32.0MiB (33.6MB), run=3012-3419msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179510: Mon Sep 7 14:16:14 2026 read: IOPS=0, BW=3398KiB/s (3480kB/s)(12.0MiB/3616msec) clat (msec): min=173, max=1943, avg=1091.25, stdev=886.55 lat (msec): min=173, max=1943, avg=1091.25, stdev=886.55 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1938], 80.00th=[ 1938], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7984, max= 8192, per=100.00%, avg=8088.00, stdev=147.08, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.06%, sys=2.74%, ctx=43, 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=179511: Mon Sep 7 14:16:14 2026 read: IOPS=0, BW=1119KiB/s (1146kB/s)(4096KiB/3660msec) clat (nsec): min=1840.8M, max=1840.8M, avg=1840757942.00, stdev= 0.00 lat (nsec): min=1840.8M, max=1840.8M, avg=1840760397.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1838], 5.00th=[ 1838], 10.00th=[ 1838], 20.00th=[ 1838], | 30.00th=[ 1838], 40.00th=[ 1838], 50.00th=[ 1838], 60.00th=[ 1838], | 70.00th=[ 1838], 80.00th=[ 1838], 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= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2238KiB/s (2292kB/s)(8192KiB/3660msec); 0 zone resets clat (msec): min=785, max=823, avg=804.25, stdev=27.00 lat (msec): min=786, max=823, avg=804.97, stdev=26.61 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=[ 827], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 8078, max= 8078, per=90.23%, avg=8078.00, 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=4.32%, ctx=61, 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=179512: Mon Sep 7 14:16:14 2026 write: IOPS=0, BW=3645KiB/s (3733kB/s)(12.0MiB/3371msec); 0 zone resets clat (msec): min=205, max=1637, avg=1087.84, stdev=771.63 lat (msec): min=206, max=1638, avg=1088.26, stdev=771.57 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=[ 1636], 80.00th=[ 1636], 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= 8000, max= 8000, per=89.36%, avg=8000.00, 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=2.31%, ctx=35, 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=179513: Mon Sep 7 14:16:14 2026 write: IOPS=0, BW=3887KiB/s (3981kB/s)(12.0MiB/3161msec); 0 zone resets clat (msec): min=306, max=1269, avg=936.12, stdev=545.24 lat (msec): min=313, max=1269, avg=938.57, stdev=541.81 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8000, max= 8078, per=89.79%, avg=8039.00, stdev=55.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.32%, ctx=58, 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=4477KiB/s (4584kB/s), 1119KiB/s-3398KiB/s (1146kB/s-3480kB/s), io=16.0MiB (16.8MB), run=3616-3660msec WRITE: bw=8953KiB/s (9168kB/s), 2238KiB/s-3887KiB/s (2292kB/s-3981kB/s), io=32.0MiB (33.6MB), run=3161-3660msec