== sanity test 398b: DIO and buffer IO race ============== 09:54:10 (1787320450) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.8297 s, 7.4 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=179015: Fri Aug 21 09:57:01 2026 read: IOPS=9, BW=39.8KiB/s (40.7kB/s)(5992KiB/150600msec) clat (usec): min=37, max=1079.3k, avg=54379.38, stdev=42171.42 lat (usec): min=38, max=1079.3k, avg=54380.70, stdev=42171.41 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10945], 10.00th=[ 20317], | 20.00th=[ 27919], 30.00th=[ 33817], 40.00th=[ 40633], | 50.00th=[ 47449], 60.00th=[ 55837], 70.00th=[ 65799], | 80.00th=[ 78119], 90.00th=[ 95945], 95.00th=[ 112722], | 99.00th=[ 160433], 99.50th=[ 175113], 99.90th=[ 244319], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 95, per=24.98%, avg=39.47, stdev=16.21, samples=295 iops : min= 1, max= 23, avg= 9.21, stdev= 4.09, samples=295 write: IOPS=10, BW=41.8KiB/s (42.8kB/s)(6296KiB/150600msec); 0 zone resets clat (usec): min=1042, max=322440, avg=43580.02, stdev=42568.95 lat (usec): min=1043, max=322442, avg=43605.90, stdev=42568.98 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1516], 10.00th=[ 2704], 20.00th=[ 6259], | 30.00th=[ 11600], 40.00th=[ 22676], 50.00th=[ 31851], 60.00th=[ 43254], | 70.00th=[ 57410], 80.00th=[ 74974], 90.00th=[101188], 95.00th=[125305], | 99.00th=[181404], 99.50th=[217056], 99.90th=[274727], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 101, per=24.96%, avg=41.44, stdev=18.45, samples=295 iops : min= 1, max= 25, avg= 9.71, stdev= 4.66, samples=295 lat (usec) : 50=0.16%, 100=1.60%, 250=0.36%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=3.94%, 4=3.06%, 10=7.19%, 20=7.52%, 50=35.38% lat (msec) : 100=31.35%, 250=9.15%, 500=0.13%, 2000=0.03% cpu : usr=0.07%, sys=4.81%, ctx=6886, 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=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=179016: Fri Aug 21 09:57:01 2026 read: IOPS=9, BW=39.8KiB/s (40.7kB/s)(5940KiB/149433msec) clat (usec): min=40, max=303197, avg=55637.14, stdev=35522.54 lat (usec): min=41, max=303198, avg=55653.87, stdev=35525.38 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 15270], 10.00th=[ 20841], 20.00th=[ 27919], | 30.00th=[ 34866], 40.00th=[ 42730], 50.00th=[ 50070], 60.00th=[ 56886], | 70.00th=[ 65799], 80.00th=[ 77071], 90.00th=[ 99091], 95.00th=[116917], | 99.00th=[198181], 99.50th=[206570], 99.90th=[248513], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 80, per=25.01%, avg=39.51, stdev=15.37, samples=293 iops : min= 1, max= 20, avg= 9.22, stdev= 3.89, samples=293 write: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6348KiB/149433msec); 0 zone resets clat (usec): min=1136, max=1057.5k, avg=41803.65, stdev=48704.16 lat (usec): min=1137, max=1057.5k, avg=41807.22, stdev=48703.30 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1598], 10.00th=[ 2507], | 20.00th=[ 5538], 30.00th=[ 9896], 40.00th=[ 18482], | 50.00th=[ 30016], 60.00th=[ 40109], 70.00th=[ 52691], | 80.00th=[ 71828], 90.00th=[ 100140], 95.00th=[ 122160], | 99.00th=[ 175113], 99.50th=[ 202376], 99.90th=[ 308282], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 102, per=25.46%, avg=42.27, stdev=18.42, samples=293 iops : min= 1, max= 25, avg= 9.91, stdev= 4.65, samples=293 lat (usec) : 50=0.07%, 100=1.53%, 250=0.13%, 500=0.03% lat (msec) : 2=3.71%, 4=4.10%, 10=7.94%, 20=8.14%, 50=33.56% lat (msec) : 100=30.89%, 250=9.70%, 500=0.16%, 2000=0.03% cpu : usr=0.08%, sys=4.85%, ctx=6684, 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=179017: Fri Aug 21 09:57:01 2026 read: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6028KiB/151350msec) clat (usec): min=30, max=1046.8k, avg=56037.96, stdev=43491.28 lat (usec): min=31, max=1046.8k, avg=56039.85, stdev=43491.27 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11731], 10.00th=[ 20841], | 20.00th=[ 28443], 30.00th=[ 34866], 40.00th=[ 41157], | 50.00th=[ 49021], 60.00th=[ 56886], 70.00th=[ 66847], | 80.00th=[ 79168], 90.00th=[ 100140], 95.00th=[ 117965], | 99.00th=[ 181404], 99.50th=[ 200279], 99.90th=[ 316670], | 99.95th=[1044382], 99.99th=[1044382] bw ( KiB/s): min= 7, max= 111, per=25.05%, avg=39.58, stdev=15.91, samples=297 iops : min= 1, max= 27, avg= 9.24, stdev= 4.01, samples=297 write: IOPS=10, BW=41.4KiB/s (42.4kB/s)(6260KiB/151350msec); 0 zone resets clat (usec): min=1106, max=313295, avg=42469.01, stdev=42962.98 lat (usec): min=1107, max=313297, avg=42471.28, stdev=42963.64 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1450], 10.00th=[ 2311], 20.00th=[ 5473], | 30.00th=[ 10552], 40.00th=[ 20841], 50.00th=[ 31851], 60.00th=[ 41681], | 70.00th=[ 53216], 80.00th=[ 71828], 90.00th=[102237], 95.00th=[126354], | 99.00th=[187696], 99.50th=[212861], 99.90th=[267387], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 94, per=25.01%, avg=41.52, stdev=18.28, samples=294 iops : min= 1, max= 23, avg= 9.73, stdev= 4.61, samples=294 lat (usec) : 50=0.23%, 100=1.79%, 250=0.26% lat (msec) : 2=4.46%, 4=3.32%, 10=7.13%, 20=7.36%, 50=35.25% lat (msec) : 100=30.01%, 250=9.93%, 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=4.79%, ctx=6732, 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=179018: Fri Aug 21 09:57:01 2026 read: IOPS=9, BW=39.0KiB/s (40.9kB/s)(6052KiB/151405msec) clat (usec): min=34, max=271891, avg=53104.14, stdev=33670.68 lat (usec): min=34, max=271892, avg=53106.92, stdev=33670.27 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 12780], 10.00th=[ 20579], 20.00th=[ 27395], | 30.00th=[ 33817], 40.00th=[ 41157], 50.00th=[ 46924], 60.00th=[ 53740], | 70.00th=[ 62653], 80.00th=[ 74974], 90.00th=[ 92799], 95.00th=[112722], | 99.00th=[173016], 99.50th=[198181], 99.90th=[246416], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 112, per=25.37%, avg=40.09, stdev=17.05, samples=294 iops : min= 1, max= 28, avg= 9.36, stdev= 4.28, samples=294 write: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6236KiB/151405msec); 0 zone resets clat (usec): min=1126, max=1026.7k, avg=45307.76, stdev=51446.60 lat (usec): min=1127, max=1026.7k, avg=45310.57, stdev=51445.95 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1418], 10.00th=[ 1975], | 20.00th=[ 5276], 30.00th=[ 10683], 40.00th=[ 22152], | 50.00th=[ 33162], 60.00th=[ 43779], 70.00th=[ 57410], | 80.00th=[ 79168], 90.00th=[ 106431], 95.00th=[ 133694], | 99.00th=[ 187696], 99.50th=[ 225444], 99.90th=[ 379585], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 7, max= 102, per=24.72%, avg=41.03, stdev=17.41, samples=296 iops : min= 1, max= 25, avg= 9.60, stdev= 4.38, samples=296 lat (usec) : 50=0.23%, 100=1.60%, 250=0.10%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.18%, 4=2.96%, 10=6.64%, 20=7.42%, 50=35.64% lat (msec) : 100=30.21%, 250=9.73%, 500=0.16%, 2000=0.03% cpu : usr=0.07%, sys=4.88%, ctx=6822, 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=159KiB/s (162kB/s), 39.8KiB/s-39.0KiB/s (40.7kB/s-40.9kB/s), io=23.4MiB (24.6MB), run=149433-151405msec WRITE: bw=166KiB/s (170kB/s), 41.2KiB/s-42.5KiB/s (42.2kB/s-43.5kB/s), io=24.6MiB (25.7MB), run=149433-151405msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179011: Fri Aug 21 09:57:45 2026 read: IOPS=7, BW=30.7KiB/s (31.4kB/s)(5992KiB/195292msec) clat (msec): min=6, max=1079, avg=50.91, stdev=54.36 lat (msec): min=6, max=1079, avg=50.91, stdev=54.36 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 53], 80.00th=[ 74], 90.00th=[ 112], 95.00th=[ 146], | 99.00th=[ 239], 99.50th=[ 292], 99.90th=[ 338], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 135, per=26.21%, avg=31.97, stdev=22.89, samples=363 iops : min= 1, max= 33, avg= 7.32, stdev= 5.77, samples=363 write: IOPS=8, BW=32.2KiB/s (33.0kB/s)(6296KiB/195292msec); 0 zone resets clat (msec): min=12, max=530, avg=75.34, stdev=55.11 lat (msec): min=12, max=530, avg=75.34, stdev=55.11 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 71], | 70.00th=[ 91], 80.00th=[ 112], 90.00th=[ 146], 95.00th=[ 180], | 99.00th=[ 284], 99.50th=[ 330], 99.90th=[ 447], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 7, max= 95, per=25.32%, avg=32.41, stdev=21.40, samples=376 iops : min= 1, max= 23, avg= 7.43, stdev= 5.39, samples=376 lat (msec) : 10=0.91%, 20=11.91%, 50=42.68%, 100=25.49%, 250=17.81% lat (msec) : 500=1.14%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.89%, ctx=5177, 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=179012: Fri Aug 21 09:57:45 2026 read: IOPS=7, BW=30.3KiB/s (31.1kB/s)(5940KiB/195798msec) clat (msec): min=6, max=1032, avg=51.45, stdev=53.87 lat (msec): min=6, max=1032, avg=51.45, stdev=53.87 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 55], 80.00th=[ 75], 90.00th=[ 117], 95.00th=[ 155], | 99.00th=[ 230], 99.50th=[ 264], 99.90th=[ 376], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 151, per=26.20%, avg=31.96, stdev=24.28, samples=359 iops : min= 1, max= 37, avg= 7.32, stdev= 6.13, samples=359 write: IOPS=8, BW=32.4KiB/s (33.2kB/s)(6348KiB/195798msec); 0 zone resets clat (msec): min=13, max=521, avg=74.95, stdev=54.87 lat (msec): min=13, max=521, avg=74.95, stdev=54.87 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 70], | 70.00th=[ 87], 80.00th=[ 114], 90.00th=[ 148], 95.00th=[ 180], | 99.00th=[ 264], 99.50th=[ 326], 99.90th=[ 418], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 7, max= 111, per=25.15%, avg=32.20, stdev=21.36, samples=380 iops : min= 1, max= 27, avg= 7.38, stdev= 5.38, samples=380 lat (msec) : 10=1.27%, 20=12.70%, 50=41.11%, 100=25.91%, 250=18.10% lat (msec) : 500=0.85%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.93%, ctx=5136, 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=179013: Fri Aug 21 09:57:45 2026 read: IOPS=7, BW=30.8KiB/s (31.6kB/s)(6028KiB/195454msec) clat (msec): min=5, max=401, avg=52.60, stdev=48.71 lat (msec): min=5, max=401, avg=52.60, stdev=48.71 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 57], 80.00th=[ 79], 90.00th=[ 116], 95.00th=[ 148], | 99.00th=[ 228], 99.50th=[ 313], 99.90th=[ 376], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7, max= 151, per=25.66%, avg=31.30, stdev=21.78, samples=373 iops : min= 1, max= 37, avg= 7.16, stdev= 5.47, samples=373 write: IOPS=8, BW=32.0KiB/s (32.8kB/s)(6260KiB/195454msec); 0 zone resets clat (msec): min=12, max=1045, avg=73.94, stdev=57.85 lat (msec): min=12, max=1045, avg=73.94, stdev=57.84 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 68], | 70.00th=[ 86], 80.00th=[ 110], 90.00th=[ 146], 95.00th=[ 176], | 99.00th=[ 245], 99.50th=[ 334], 99.90th=[ 405], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 111, per=25.14%, avg=32.18, stdev=21.85, samples=377 iops : min= 1, max= 27, avg= 7.38, stdev= 5.52, samples=377 lat (msec) : 10=1.04%, 20=12.14%, 50=41.89%, 100=26.20%, 250=17.90% lat (msec) : 500=0.78%, 2000=0.03% cpu : usr=0.05%, sys=1.93%, ctx=5147, 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=179014: Fri Aug 21 09:57:45 2026 read: IOPS=7, BW=31.1KiB/s (31.9kB/s)(6052KiB/194325msec) clat (msec): min=5, max=330, avg=51.25, stdev=47.53 lat (msec): min=5, max=330, avg=51.25, stdev=47.53 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 74], 90.00th=[ 117], 95.00th=[ 155], | 99.00th=[ 228], 99.50th=[ 253], 99.90th=[ 309], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 151, per=26.31%, avg=32.10, stdev=22.90, samples=365 iops : min= 1, max= 37, avg= 7.35, stdev= 5.78, samples=365 write: IOPS=8, BW=32.1KiB/s (32.9kB/s)(6236KiB/194325msec); 0 zone resets clat (msec): min=10, max=1063, avg=74.65, stdev=59.18 lat (msec): min=10, max=1063, avg=74.65, stdev=59.18 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 57], 60.00th=[ 70], | 70.00th=[ 87], 80.00th=[ 112], 90.00th=[ 150], 95.00th=[ 174], | 99.00th=[ 275], 99.50th=[ 338], 99.90th=[ 426], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 103, per=25.57%, avg=32.72, stdev=21.04, samples=369 iops : min= 1, max= 25, avg= 7.51, stdev= 5.31, samples=369 lat (msec) : 10=1.27%, 20=11.85%, 50=42.64%, 100=25.68%, 250=17.68% lat (msec) : 500=0.85%, 2000=0.03% cpu : usr=0.05%, sys=1.95%, ctx=5097, 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=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=123KiB/s (126kB/s), 30.3KiB/s-31.1KiB/s (31.1kB/s-31.9kB/s), io=23.4MiB (24.6MB), run=194325-195798msec WRITE: bw=128KiB/s (131kB/s), 32.0KiB/s-32.4KiB/s (32.8kB/s-33.2kB/s), io=24.6MiB (25.7MB), run=194325-195798msec 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=179060: Fri Aug 21 09:58:32 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5920KiB/34980msec) clat (usec): min=45, max=248079, avg=51891.07, stdev=35442.73 lat (usec): min=45, max=248081, avg=51900.30, stdev=35442.88 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 68], 10.00th=[ 14091], 20.00th=[ 28705], | 30.00th=[ 33424], 40.00th=[ 39060], 50.00th=[ 44827], 60.00th=[ 52167], | 70.00th=[ 62129], 80.00th=[ 71828], 90.00th=[ 96994], 95.00th=[114820], | 99.00th=[164627], 99.50th=[219153], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 62, max= 357, per=25.47%, avg=167.59, stdev=62.24, samples=68 iops : min= 3, max= 22, avg= 9.68, stdev= 3.95, samples=68 write: IOPS=11, BW=182KiB/s (186kB/s)(6368KiB/34980msec); 0 zone resets clat (usec): min=1680, max=203668, avg=39033.80, stdev=41108.37 lat (usec): min=1681, max=203670, avg=39036.42, stdev=41108.78 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2073], 10.00th=[ 3163], 20.00th=[ 5932], | 30.00th=[ 9372], 40.00th=[ 15795], 50.00th=[ 24249], 60.00th=[ 33817], | 70.00th=[ 47449], 80.00th=[ 68682], 90.00th=[100140], 95.00th=[124257], | 99.00th=[173016], 99.50th=[198181], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 381, per=26.12%, avg=181.04, stdev=82.61, samples=68 iops : min= 1, max= 23, avg=10.53, stdev= 5.20, samples=68 lat (usec) : 50=0.13%, 100=3.39%, 250=0.39%, 500=0.26%, 750=0.26% lat (msec) : 2=2.47%, 4=4.30%, 10=9.51%, 20=9.11%, 50=34.11% lat (msec) : 100=26.69%, 250=9.38% cpu : usr=0.06%, sys=5.75%, ctx=1655, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179061: Fri Aug 21 09:58:32 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(5744KiB/35754msec) clat (usec): min=41, max=185510, avg=53517.35, stdev=33815.01 lat (usec): min=41, max=185511, avg=53518.95, stdev=33814.85 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 70], 10.00th=[ 16712], 20.00th=[ 28181], | 30.00th=[ 34341], 40.00th=[ 40109], 50.00th=[ 49021], 60.00th=[ 55837], | 70.00th=[ 65799], 80.00th=[ 80217], 90.00th=[ 99091], 95.00th=[114820], | 99.00th=[158335], 99.50th=[179307], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 31, max= 346, per=24.38%, avg=160.44, stdev=65.05, samples=70 iops : min= 1, max= 21, avg= 9.24, stdev= 4.15, samples=70 write: IOPS=11, BW=183KiB/s (187kB/s)(6544KiB/35754msec); 0 zone resets clat (usec): min=1525, max=210061, avg=40110.31, stdev=37812.87 lat (usec): min=1527, max=210063, avg=40123.40, stdev=37813.39 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2147], 10.00th=[ 4080], 20.00th=[ 7242], | 30.00th=[ 13042], 40.00th=[ 19530], 50.00th=[ 29754], 60.00th=[ 36439], | 70.00th=[ 49546], 80.00th=[ 69731], 90.00th=[ 99091], 95.00th=[112722], | 99.00th=[158335], 99.50th=[175113], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 62, max= 379, per=26.15%, avg=181.19, stdev=71.33, samples=70 iops : min= 3, max= 23, avg=10.56, stdev= 4.50, samples=70 lat (usec) : 50=0.13%, 100=3.52%, 250=0.13%, 750=0.13% lat (msec) : 2=2.08%, 4=3.12%, 10=8.33%, 20=9.11%, 50=35.03% lat (msec) : 100=28.91%, 250=9.51% cpu : usr=0.08%, sys=5.55%, ctx=1622, 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=179062: Fri Aug 21 09:58:32 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6256KiB/36022msec) clat (usec): min=41, max=220046, avg=52454.88, stdev=35286.95 lat (usec): min=42, max=220048, avg=52456.30, stdev=35287.02 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 62], 10.00th=[ 135], 20.00th=[ 25560], | 30.00th=[ 35390], 40.00th=[ 40109], 50.00th=[ 47449], 60.00th=[ 56886], | 70.00th=[ 66323], 80.00th=[ 74974], 90.00th=[ 93848], 95.00th=[119014], | 99.00th=[177210], 99.50th=[206570], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 63, max= 319, per=26.28%, avg=172.91, stdev=68.40, samples=70 iops : min= 3, max= 19, avg=10.03, stdev= 4.33, samples=70 write: IOPS=10, BW=167KiB/s (171kB/s)(6032KiB/36022msec); 0 zone resets clat (usec): min=1599, max=198927, avg=40628.40, stdev=39538.16 lat (usec): min=1602, max=198929, avg=40632.50, stdev=39542.30 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2802], 10.00th=[ 4424], 20.00th=[ 7177], | 30.00th=[ 13042], 40.00th=[ 20579], 50.00th=[ 27657], 60.00th=[ 39584], | 70.00th=[ 49546], 80.00th=[ 66323], 90.00th=[ 90702], 95.00th=[131597], | 99.00th=[175113], 99.50th=[189793], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 327, per=23.63%, avg=163.74, stdev=68.95, samples=70 iops : min= 1, max= 20, avg= 9.44, stdev= 4.33, samples=70 lat (usec) : 50=0.39%, 100=4.56%, 250=0.26%, 500=0.13% lat (msec) : 2=1.95%, 4=3.12%, 10=8.07%, 20=6.90%, 50=35.94% lat (msec) : 100=29.95%, 250=8.72% cpu : usr=0.04%, sys=5.70%, ctx=1720, 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=179063: Fri Aug 21 09:58:32 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(6032KiB/36346msec) clat (usec): min=39, max=231036, avg=53125.65, stdev=35448.66 lat (usec): min=40, max=231037, avg=53128.01, stdev=35448.22 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 64], 10.00th=[ 1500], 20.00th=[ 25035], | 30.00th=[ 33817], 40.00th=[ 40633], 50.00th=[ 50594], 60.00th=[ 58983], | 70.00th=[ 66847], 80.00th=[ 78119], 90.00th=[ 93848], 95.00th=[111674], | 99.00th=[183501], 99.50th=[212861], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 317, per=24.94%, avg=164.10, stdev=55.05, samples=71 iops : min= 1, max= 19, avg= 9.46, stdev= 3.52, samples=71 write: IOPS=10, BW=172KiB/s (176kB/s)(6256KiB/36346msec); 0 zone resets clat (usec): min=1444, max=232929, avg=41159.65, stdev=41571.65 lat (usec): min=1446, max=232933, avg=41163.40, stdev=41571.35 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2376], 10.00th=[ 3720], 20.00th=[ 6587], | 30.00th=[ 10814], 40.00th=[ 20317], 50.00th=[ 27919], 60.00th=[ 38011], | 70.00th=[ 50594], 80.00th=[ 68682], 90.00th=[ 98042], 95.00th=[127402], | 99.00th=[179307], 99.50th=[187696], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 407, per=24.68%, avg=171.03, stdev=74.16, samples=71 iops : min= 1, max= 25, avg= 9.90, stdev= 4.68, samples=71 lat (usec) : 50=0.13%, 100=3.91%, 250=0.52%, 500=0.26% lat (msec) : 2=2.08%, 4=3.91%, 10=9.38%, 20=6.38%, 50=32.94% lat (msec) : 100=32.42%, 250=8.07% cpu : usr=0.05%, sys=5.59%, ctx=1772, 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=659KiB/s (675kB/s), 161KiB/s-174KiB/s (165kB/s-178kB/s), io=23.4MiB (24.5MB), run=34980-36346msec WRITE: bw=693KiB/s (710kB/s), 167KiB/s-183KiB/s (171kB/s-187kB/s), io=24.6MiB (25.8MB), run=34980-36346msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179065: Fri Aug 21 09:58:47 2026 read: IOPS=7, BW=119KiB/s (122kB/s)(5920KiB/49772msec) clat (msec): min=8, max=393, avg=52.57, stdev=47.66 lat (msec): min=8, max=393, avg=52.57, stdev=47.66 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 53], 80.00th=[ 72], 90.00th=[ 112], 95.00th=[ 163], | 99.00th=[ 211], 99.50th=[ 321], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 30, max= 320, per=25.03%, avg=117.88, stdev=70.75, samples=98 iops : min= 1, max= 20, avg= 6.55, stdev= 4.47, samples=98 write: IOPS=7, BW=128KiB/s (131kB/s)(6368KiB/49772msec); 0 zone resets clat (msec): min=14, max=282, avg=75.97, stdev=49.21 lat (msec): min=14, max=282, avg=75.97, stdev=49.21 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 44], 40.00th=[ 52], 50.00th=[ 63], 60.00th=[ 74], | 70.00th=[ 88], 80.00th=[ 111], 90.00th=[ 148], 95.00th=[ 180], | 99.00th=[ 259], 99.50th=[ 271], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 26, max= 377, per=26.22%, avg=130.04, stdev=77.75, samples=96 iops : min= 1, max= 23, avg= 7.32, stdev= 4.89, samples=96 lat (msec) : 10=0.39%, 20=8.07%, 50=43.49%, 100=30.08%, 250=17.06% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=2.06%, ctx=1269, 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=179066: Fri Aug 21 09:58:47 2026 read: IOPS=7, BW=113KiB/s (116kB/s)(5744KiB/50760msec) clat (msec): min=8, max=528, avg=52.55, stdev=51.43 lat (msec): min=8, max=528, avg=52.55, stdev=51.43 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 38], 60.00th=[ 46], | 70.00th=[ 52], 80.00th=[ 73], 90.00th=[ 120], 95.00th=[ 142], | 99.00th=[ 253], 99.50th=[ 330], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 26, max= 445, per=24.53%, avg=115.56, stdev=80.42, samples=97 iops : min= 1, max= 27, avg= 6.41, stdev= 5.05, samples=97 write: IOPS=8, BW=129KiB/s (132kB/s)(6544KiB/50760msec); 0 zone resets clat (msec): min=10, max=342, avg=77.81, stdev=55.06 lat (msec): min=10, max=342, avg=77.81, stdev=55.06 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 52], 50.00th=[ 61], 60.00th=[ 72], | 70.00th=[ 91], 80.00th=[ 114], 90.00th=[ 157], 95.00th=[ 190], | 99.00th=[ 262], 99.50th=[ 275], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 383, per=26.00%, avg=128.98, stdev=76.71, samples=99 iops : min= 1, max= 23, avg= 7.25, stdev= 4.83, samples=99 lat (msec) : 10=0.78%, 20=9.77%, 50=41.28%, 100=28.78%, 250=17.84% lat (msec) : 500=1.43%, 750=0.13% cpu : usr=0.04%, sys=1.94%, ctx=1358, 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=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=179067: Fri Aug 21 09:58:47 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(6256KiB/49924msec) clat (msec): min=7, max=326, avg=50.89, stdev=41.05 lat (msec): min=7, max=326, avg=50.89, stdev=41.05 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 41], 60.00th=[ 46], | 70.00th=[ 55], 80.00th=[ 71], 90.00th=[ 107], 95.00th=[ 138], | 99.00th=[ 205], 99.50th=[ 249], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 446, per=26.92%, avg=126.78, stdev=90.23, samples=97 iops : min= 1, max= 27, avg= 7.11, stdev= 5.68, samples=97 write: IOPS=7, BW=121KiB/s (124kB/s)(6032KiB/49924msec); 0 zone resets clat (msec): min=15, max=332, avg=79.47, stdev=52.51 lat (msec): min=15, max=332, avg=79.47, stdev=52.51 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 40], | 30.00th=[ 46], 40.00th=[ 55], 50.00th=[ 63], 60.00th=[ 74], | 70.00th=[ 92], 80.00th=[ 116], 90.00th=[ 157], 95.00th=[ 197], | 99.00th=[ 236], 99.50th=[ 292], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 286, per=24.14%, avg=119.73, stdev=64.73, samples=97 iops : min= 1, max= 17, avg= 6.67, stdev= 4.09, samples=97 lat (msec) : 10=0.52%, 20=8.33%, 50=41.28%, 100=31.25%, 250=18.10% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.98%, ctx=1316, 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= 0: pid=179068: Fri Aug 21 09:58:47 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(6032KiB/49820msec) clat (msec): min=7, max=291, avg=54.57, stdev=44.11 lat (msec): min=7, max=291, avg=54.57, stdev=44.11 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 61], 80.00th=[ 80], 90.00th=[ 121], 95.00th=[ 146], | 99.00th=[ 201], 99.50th=[ 255], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 317, per=25.95%, avg=122.23, stdev=73.92, samples=96 iops : min= 1, max= 19, avg= 6.82, stdev= 4.68, samples=96 write: IOPS=7, BW=126KiB/s (129kB/s)(6256KiB/49820msec); 0 zone resets clat (msec): min=13, max=342, avg=74.60, stdev=52.85 lat (msec): min=13, max=342, avg=74.60, stdev=52.85 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 69], | 70.00th=[ 84], 80.00th=[ 105], 90.00th=[ 133], 95.00th=[ 188], | 99.00th=[ 284], 99.50th=[ 305], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 350, per=25.72%, avg=127.57, stdev=75.01, samples=96 iops : min= 1, max= 21, avg= 7.17, stdev= 4.70, samples=96 lat (msec) : 10=0.39%, 20=8.72%, 50=42.84%, 100=30.99%, 250=16.02% lat (msec) : 500=1.04% cpu : usr=0.05%, sys=2.10%, ctx=1359, 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=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=472KiB/s (483kB/s), 113KiB/s-125KiB/s (116kB/s-128kB/s), io=23.4MiB (24.5MB), run=49772-50760msec WRITE: bw=496KiB/s (508kB/s), 121KiB/s-129KiB/s (124kB/s-132kB/s), io=24.6MiB (25.8MB), run=49772-50760msec 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=179090: Fri Aug 21 09:59:08 2026 read: IOPS=0, BW=916KiB/s (938kB/s)(7168KiB/7822msec) clat (usec): min=474, max=3108.5k, avg=892401.00, stdev=1157347.90 lat (usec): min=475, max=3108.5k, avg=892402.24, stdev=1157348.34 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], | 20.00th=[ 162530], 30.00th=[ 223347], 40.00th=[ 223347], | 50.00th=[ 316670], 60.00th=[ 574620], 70.00th=[ 574620], | 80.00th=[1853883], 90.00th=[3103785], 95.00th=[3103785], | 99.00th=[3103785], 99.50th=[3103785], 99.90th=[3103785], | 99.95th=[3103785], 99.99th=[3103785] bw ( KiB/s): min= 2007, max= 2043, per=95.32%, avg=2030.33, stdev=15.47, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=655KiB/s (670kB/s)(5120KiB/7822msec); 0 zone resets clat (msec): min=136, max=494, avg=291.18, stdev=161.53 lat (msec): min=136, max=494, avg=291.34, stdev=161.64 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 2039, max= 4087, per=91.28%, avg=2723.00, stdev=1181.26, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=8.22%, ctx=960, 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=179091: Fri Aug 21 09:59:08 2026 read: IOPS=0, BW=213KiB/s (218kB/s)(2048KiB/9611msec) clat (msec): min=130, max=267, avg=198.89, stdev=97.22 lat (msec): min=130, max=267, avg=198.89, stdev=97.22 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 131], 60.00th=[ 268], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 268], 95.00th=[ 268], | 99.00th=[ 268], 99.50th=[ 268], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 1659, max= 2043, per=86.90%, avg=1851.00, stdev=271.53, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1065KiB/s (1091kB/s)(10.0MiB/9611msec); 0 zone resets clat (msec): min=149, max=5029, avg=888.47, stdev=1468.64 lat (msec): min=149, max=5029, avg=888.60, stdev=1468.69 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 190], | 30.00th=[ 205], 40.00th=[ 376], 50.00th=[ 418], 60.00th=[ 584], | 70.00th=[ 609], 80.00th=[ 625], 90.00th=[ 709], 95.00th=[ 5000], | 99.00th=[ 5000], 99.50th=[ 5000], 99.90th=[ 5000], 99.95th=[ 5000], | 99.99th=[ 5000] bw ( KiB/s): min= 2007, max= 4071, per=79.60%, avg=2374.50, stdev=831.24, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 250=33.33%, 500=25.00%, 750=33.33%, >=2000=8.33% cpu : usr=0.01%, sys=7.19%, ctx=219, 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=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=179092: Fri Aug 21 09:59:08 2026 read: IOPS=0, BW=792KiB/s (811kB/s)(6144KiB/7753msec) clat (usec): min=543, max=453061, avg=95935.38, stdev=177545.49 lat (usec): min=544, max=453062, avg=95936.29, stdev=177545.56 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 586], | 30.00th=[ 586], 40.00th=[ 1532], 50.00th=[ 1532], 60.00th=[ 46400], | 70.00th=[ 73925], 80.00th=[ 73925], 90.00th=[455082], 95.00th=[455082], | 99.00th=[455082], 99.50th=[455082], 99.90th=[455082], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 4071, max= 4087, per=100.00%, avg=4079.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=792KiB/s (811kB/s)(6144KiB/7753msec); 0 zone resets clat (msec): min=126, max=5133, avg=1147.90, stdev=1965.61 lat (msec): min=126, max=5134, avg=1148.01, stdev=1965.70 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 209], 50.00th=[ 209], 60.00th=[ 575], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 5134], 95.00th=[ 5134], | 99.00th=[ 5134], 99.50th=[ 5134], 99.90th=[ 5134], 99.95th=[ 5134], | 99.99th=[ 5134] bw ( KiB/s): min= 2035, max= 2043, per=68.39%, avg=2040.00, stdev= 3.83, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 50=8.33%, 100=8.33%, 250=25.00%, 500=8.33% lat (msec) : 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=5.30%, ctx=171, 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=179093: Fri Aug 21 09:59:08 2026 read: IOPS=0, BW=558KiB/s (572kB/s)(5120KiB/9171msec) clat (usec): min=510, max=352068, avg=141392.22, stdev=150443.69 lat (usec): min=511, max=352070, avg=141393.24, stdev=150443.70 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[132645], 60.00th=[132645], | 70.00th=[221250], 80.00th=[221250], 90.00th=[350225], 95.00th=[350225], | 99.00th=[350225], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 4087, max= 4096, per=100.00%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=0, BW=782KiB/s (800kB/s)(7168KiB/9171msec); 0 zone resets clat (msec): min=93, max=5085, avg=1184.45, stdev=1738.06 lat (msec): min=93, max=5086, avg=1184.69, stdev=1737.97 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 347], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 718], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 768], 90.00th=[ 5067], 95.00th=[ 5067], | 99.00th=[ 5067], 99.50th=[ 5067], 99.90th=[ 5067], 99.95th=[ 5067], | 99.99th=[ 5067] bw ( KiB/s): min= 1988, max= 2043, per=67.91%, avg=2025.83, stdev=22.95, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=16.67%, 500=16.67%, 750=16.67%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=5.01%, ctx=247, 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=2131KiB/s (2182kB/s), 213KiB/s-916KiB/s (218kB/s-938kB/s), io=20.0MiB (20.0MB), run=7753-9611msec WRITE: bw=2983KiB/s (3055kB/s), 655KiB/s-1065KiB/s (670kB/s-1091kB/s), io=28.0MiB (29.4MB), run=7753-9611msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179086: Fri Aug 21 09:59:09 2026 read: IOPS=0, BW=699KiB/s (716kB/s)(7168KiB/10253msec) clat (msec): min=84, max=3378, avg=1148.41, stdev=1493.71 lat (msec): min=84, max=3378, avg=1148.41, stdev=1493.71 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 109], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 169], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 3205], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 2048, max= 4087, per=100.00%, avg=3378.33, stdev=1152.92, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=0, BW=499KiB/s (511kB/s)(5120KiB/10253msec); 0 zone resets clat (msec): min=93, max=685, avg=400.86, stdev=218.92 lat (msec): min=93, max=685, avg=401.07, stdev=218.69 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 2000, max= 2019, per=71.94%, avg=2011.33, stdev=10.02, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=16.67% cpu : usr=0.00%, sys=1.83%, ctx=89, 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=179087: Fri Aug 21 09:59:09 2026 read: IOPS=0, BW=215KiB/s (220kB/s)(2048KiB/9546msec) clat (msec): min=91, max=194, avg=142.87, stdev=72.33 lat (msec): min=91, max=194, avg=142.87, stdev=72.33 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 92], | 30.00th=[ 92], 40.00th=[ 92], 50.00th=[ 92], 60.00th=[ 194], | 70.00th=[ 194], 80.00th=[ 194], 90.00th=[ 194], 95.00th=[ 194], | 99.00th=[ 194], 99.50th=[ 194], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 1641, max= 2043, per=92.24%, avg=1842.00, stdev=284.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1073KiB/s (1098kB/s)(10.0MiB/9546msec); 0 zone resets clat (msec): min=148, max=5183, avg=920.49, stdev=1514.00 lat (msec): min=148, max=5183, avg=920.57, stdev=1513.99 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 211], | 30.00th=[ 243], 40.00th=[ 309], 50.00th=[ 477], 60.00th=[ 531], | 70.00th=[ 575], 80.00th=[ 726], 90.00th=[ 802], 95.00th=[ 5201], | 99.00th=[ 5201], 99.50th=[ 5201], 99.90th=[ 5201], 99.95th=[ 5201], | 99.99th=[ 5201] bw ( KiB/s): min= 1825, max= 4031, per=91.94%, avg=2570.71, stdev=990.12, samples=7 iops : min= 1, max= 3, avg= 1.86, stdev= 0.90, samples=7 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=25.00%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.48%, ctx=73, 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=179088: Fri Aug 21 09:59:09 2026 read: IOPS=0, BW=695KiB/s (711kB/s)(6144KiB/8846msec) clat (msec): min=100, max=543, avg=282.86, stdev=178.44 lat (msec): min=100, max=543, avg=282.86, stdev=178.44 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 296], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2015, max= 2048, per=100.00%, avg=2034.60, stdev=16.26, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=0, BW=695KiB/s (711kB/s)(6144KiB/8846msec); 0 zone resets clat (msec): min=165, max=5092, avg=1148.60, stdev=1936.89 lat (msec): min=165, max=5092, avg=1148.67, stdev=1936.89 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 5067], 95.00th=[ 5067], | 99.00th=[ 5067], 99.50th=[ 5067], 99.90th=[ 5067], 99.95th=[ 5067], | 99.99th=[ 5067] bw ( KiB/s): min= 1656, max= 2048, per=70.23%, avg=1963.50, stdev=151.71, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=1.90%, ctx=78, 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=179089: Fri Aug 21 09:59:09 2026 read: IOPS=0, BW=557KiB/s (570kB/s)(5120KiB/9195msec) clat (msec): min=113, max=924, avg=318.01, stdev=341.41 lat (msec): min=113, max=924, avg=318.01, stdev=341.41 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 182], 60.00th=[ 182], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 4039, max= 4096, per=100.00%, avg=4067.50, stdev=40.31, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=0, BW=780KiB/s (798kB/s)(7168KiB/9195msec); 0 zone resets clat (msec): min=145, max=4971, avg=1047.76, stdev=1740.04 lat (msec): min=145, max=4971, avg=1047.85, stdev=1740.03 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 169], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 514], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 609], 90.00th=[ 5000], 95.00th=[ 5000], | 99.00th=[ 5000], 99.50th=[ 5000], 99.90th=[ 5000], 99.95th=[ 5000], | 99.99th=[ 5000] bw ( KiB/s): min= 1732, max= 2048, per=68.81%, avg=1924.00, stdev=137.93, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=50.00%, 500=8.33%, 750=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.37%, ctx=108, 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=1997KiB/s (2045kB/s), 215KiB/s-699KiB/s (220kB/s-716kB/s), io=20.0MiB (20.0MB), run=8846-10253msec WRITE: bw=2796KiB/s (2864kB/s), 499KiB/s-1073KiB/s (511kB/s-1098kB/s), io=28.0MiB (29.4MB), run=8846-10253msec 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=179100: Fri Aug 21 09:59:23 2026 read: IOPS=0, BW=3448KiB/s (3531kB/s)(12.0MiB/3564msec) clat (msec): min=1012, max=1357, avg=1176.01, stdev=173.43 lat (msec): min=1012, max=1357, avg=1176.02, stdev=173.43 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7937, max= 8143, per=100.00%, avg=8040.00, stdev=145.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=8.87%, ctx=227, 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=179101: Fri Aug 21 09:59:23 2026 read: IOPS=0, BW=1321KiB/s (1353kB/s)(4096KiB/3100msec) clat (nsec): min=1355.8M, max=1355.8M, avg=1355812704.00, stdev= 0.00 lat (nsec): min=1355.8M, max=1355.8M, avg=1355816157.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1351], 5.00th=[ 1351], 10.00th=[ 1351], 20.00th=[ 1351], | 30.00th=[ 1351], 40.00th=[ 1351], 50.00th=[ 1351], 60.00th=[ 1351], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2643KiB/s (2706kB/s)(8192KiB/3100msec); 0 zone resets clat (msec): min=849, max=863, avg=856.29, stdev= 9.83 lat (msec): min=849, max=864, avg=856.90, stdev=10.14 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 860], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7937, max= 7937, per=95.36%, avg=7937.00, 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=6.29%, ctx=98, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179102: Fri Aug 21 09:59:23 2026 write: IOPS=0, BW=3121KiB/s (3196kB/s)(12.0MiB/3937msec); 0 zone resets clat (msec): min=1168, max=1527, avg=1290.10, stdev=205.77 lat (msec): min=1171, max=1528, avg=1291.33, stdev=204.98 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8031, max= 8078, per=96.77%, avg=8054.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=5.84%, ctx=123, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179103: Fri Aug 21 09:59:23 2026 write: IOPS=1, BW=4580KiB/s (4690kB/s)(12.0MiB/2683msec); 0 zone resets clat (msec): min=288, max=1975, avg=869.05, stdev=958.41 lat (msec): min=289, max=1978, avg=870.24, stdev=959.90 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 1972], 80.00th=[ 1972], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 7314, max= 8062, per=92.37%, avg=7688.00, stdev=528.92, 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=0.11%, sys=6.49%, ctx=50, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4597KiB/s (4707kB/s), 1321KiB/s-3448KiB/s (1353kB/s-3531kB/s), io=16.0MiB (16.8MB), run=3100-3564msec WRITE: bw=8323KiB/s (8523kB/s), 2643KiB/s-4580KiB/s (2706kB/s-4690kB/s), io=32.0MiB (33.6MB), run=2683-3937msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179105: Fri Aug 21 09:59:24 2026 read: IOPS=0, BW=3328KiB/s (3408kB/s)(12.0MiB/3692msec) clat (msec): min=641, max=1686, avg=1229.73, stdev=534.85 lat (msec): min=641, max=1686, avg=1229.73, stdev=534.85 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 1368], 50.00th=[ 1368], 60.00th=[ 1368], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, 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=0.05%, sys=3.14%, ctx=48, 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=179106: Fri Aug 21 09:59:24 2026 read: IOPS=0, BW=1187KiB/s (1215kB/s)(4096KiB/3451msec) clat (nsec): min=1482.2M, max=1482.2M, avg=1482236819.00, stdev= 0.00 lat (nsec): min=1482.2M, max=1482.2M, avg=1482238395.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1485], 5.00th=[ 1485], 10.00th=[ 1485], 20.00th=[ 1485], | 30.00th=[ 1485], 40.00th=[ 1485], 50.00th=[ 1485], 60.00th=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2374KiB/s (2431kB/s)(8192KiB/3451msec); 0 zone resets clat (msec): min=539, max=1425, avg=982.31, stdev=626.53 lat (msec): min=541, max=1425, avg=983.37, stdev=625.23 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8143, max= 8143, per=97.70%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.90%, ctx=40, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179107: Fri Aug 21 09:59:24 2026 write: IOPS=0, BW=3126KiB/s (3201kB/s)(12.0MiB/3931msec); 0 zone resets clat (msec): min=296, max=2051, avg=1276.17, stdev=895.32 lat (msec): min=296, max=2051, avg=1276.40, stdev=895.36 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 1485], 50.00th=[ 1485], 60.00th=[ 1485], | 70.00th=[ 2056], 80.00th=[ 2056], 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= 8175, max= 8175, per=98.08%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.10%, sys=2.62%, ctx=38, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179108: Fri Aug 21 09:59:24 2026 write: IOPS=1, BW=4732KiB/s (4845kB/s)(12.0MiB/2597msec); 0 zone resets clat (msec): min=403, max=1758, avg=864.04, stdev=775.04 lat (msec): min=403, max=1759, avg=864.63, stdev=775.37 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 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= 7585, max= 8031, per=93.68%, avg=7808.00, stdev=315.37, 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=4.12%, ctx=45, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4438KiB/s (4544kB/s), 1187KiB/s-3328KiB/s (1215kB/s-3408kB/s), io=16.0MiB (16.8MB), run=3451-3692msec WRITE: bw=8336KiB/s (8536kB/s), 2374KiB/s-4732KiB/s (2431kB/s-4845kB/s), io=32.0MiB (33.6MB), run=2597-3931msec