== sanity test 398b: DIO and buffer IO race ============== 06:11:42 (1788516702) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.47358 s, 9.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=144458: Fri Sep 4 06:14:18 2026 read: IOPS=10, BW=43.6KiB/s (44.7kB/s)(5992KiB/137341msec) clat (usec): min=36, max=996769, avg=46130.90, stdev=41489.98 lat (usec): min=36, max=996772, avg=46133.35, stdev=41490.20 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 1336], 20.00th=[ 21627], | 30.00th=[ 27657], 40.00th=[ 33424], 50.00th=[ 40109], 60.00th=[ 47973], | 70.00th=[ 55837], 80.00th=[ 66323], 90.00th=[ 86508], 95.00th=[103285], | 99.00th=[160433], 99.50th=[187696], 99.90th=[354419], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 103, per=24.90%, avg=43.33, stdev=18.59, samples=268 iops : min= 1, max= 25, avg=10.17, stdev= 4.67, samples=268 write: IOPS=11, BW=45.8KiB/s (46.9kB/s)(6296KiB/137341msec); 0 zone resets clat (usec): min=1004, max=312055, avg=43069.34, stdev=44537.72 lat (usec): min=1005, max=312057, avg=43072.81, stdev=44536.88 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1401], 10.00th=[ 2180], 20.00th=[ 4883], | 30.00th=[ 9110], 40.00th=[ 19530], 50.00th=[ 31065], 60.00th=[ 42206], | 70.00th=[ 55837], 80.00th=[ 73925], 90.00th=[106431], 95.00th=[127402], | 99.00th=[189793], 99.50th=[221250], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 103, per=24.94%, avg=45.40, stdev=19.78, samples=269 iops : min= 1, max= 25, avg=10.70, stdev= 4.97, samples=269 lat (usec) : 50=0.26%, 100=4.10%, 250=0.36%, 500=0.10%, 1000=0.03% lat (msec) : 2=4.98%, 4=4.00%, 10=7.39%, 20=8.46%, 50=34.70% lat (msec) : 100=26.92%, 250=8.40%, 500=0.26%, 1000=0.03% cpu : usr=0.08%, sys=5.10%, ctx=6924, 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=144459: Fri Sep 4 06:14:18 2026 read: IOPS=10, BW=43.4KiB/s (44.4kB/s)(5940KiB/136882msec) clat (usec): min=37, max=345696, avg=44849.32, stdev=33143.88 lat (usec): min=37, max=345698, avg=44852.47, stdev=33144.76 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 72], 10.00th=[ 11338], 20.00th=[ 21365], | 30.00th=[ 27132], 40.00th=[ 32900], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 53740], 80.00th=[ 65274], 90.00th=[ 85459], 95.00th=[105382], | 99.00th=[154141], 99.50th=[170918], 99.90th=[304088], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 7, max= 102, per=24.61%, avg=42.83, stdev=18.43, samples=269 iops : min= 1, max= 25, avg=10.05, stdev= 4.64, samples=269 write: IOPS=11, BW=46.4KiB/s (47.5kB/s)(6348KiB/136882msec); 0 zone resets clat (usec): min=989, max=991278, avg=43987.36, stdev=50503.38 lat (usec): min=991, max=991280, avg=43998.67, stdev=50503.68 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1418], 10.00th=[ 2311], 20.00th=[ 5407], | 30.00th=[ 10290], 40.00th=[ 21103], 50.00th=[ 31065], 60.00th=[ 44303], | 70.00th=[ 55313], 80.00th=[ 76022], 90.00th=[100140], 95.00th=[130548], | 99.00th=[189793], 99.50th=[223347], 99.90th=[513803], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 111, per=25.32%, avg=46.09, stdev=20.20, samples=267 iops : min= 1, max= 27, avg=10.87, stdev= 5.06, samples=267 lat (usec) : 50=0.26%, 100=3.39%, 250=0.59%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.03% lat (msec) : 2=4.43%, 4=4.00%, 10=6.90%, 20=8.92%, 50=36.46% lat (msec) : 100=26.73%, 250=7.81%, 500=0.16%, 750=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.11%, ctx=6851, 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=144460: Fri Sep 4 06:14:18 2026 read: IOPS=10, BW=43.8KiB/s (44.8kB/s)(6028KiB/137636msec) clat (usec): min=34, max=394404, avg=44190.61, stdev=33441.27 lat (usec): min=34, max=394406, avg=44194.68, stdev=33440.28 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 72], 10.00th=[ 8979], 20.00th=[ 20841], | 30.00th=[ 26346], 40.00th=[ 32637], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 65274], 90.00th=[ 84411], 95.00th=[102237], | 99.00th=[147850], 99.50th=[196084], 99.90th=[316670], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 7, max= 103, per=25.33%, avg=44.07, stdev=19.05, samples=266 iops : min= 1, max= 25, avg=10.36, stdev= 4.79, samples=266 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(6260KiB/137636msec); 0 zone resets clat (usec): min=1002, max=1147.4k, avg=45144.67, stdev=53531.67 lat (usec): min=1003, max=1147.4k, avg=45153.01, stdev=53528.00 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1434], 10.00th=[ 2245], | 20.00th=[ 4948], 30.00th=[ 10159], 40.00th=[ 20579], | 50.00th=[ 33424], 60.00th=[ 45351], 70.00th=[ 59507], | 80.00th=[ 74974], 90.00th=[ 102237], 95.00th=[ 131597], | 99.00th=[ 204473], 99.50th=[ 242222], 99.90th=[ 404751], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 7, max= 135, per=24.92%, avg=45.35, stdev=20.27, samples=268 iops : min= 1, max= 33, avg=10.69, stdev= 5.09, samples=268 lat (usec) : 50=0.36%, 100=3.45%, 250=0.39%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=4.36%, 4=4.56%, 10=6.77%, 20=8.92%, 50=35.97% lat (msec) : 100=26.73%, 250=7.94%, 500=0.26%, 2000=0.03% cpu : usr=0.08%, sys=5.00%, ctx=6730, 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=144461: Fri Sep 4 06:14:18 2026 read: IOPS=11, BW=44.4KiB/s (45.4kB/s)(6052KiB/136448msec) clat (usec): min=31, max=293352, avg=43539.22, stdev=32002.19 lat (usec): min=31, max=293353, avg=43542.61, stdev=32003.27 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 330], 20.00th=[ 20841], | 30.00th=[ 25822], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 53740], 80.00th=[ 65799], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[141558], 99.50th=[170918], 99.90th=[248513], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 103, per=25.73%, avg=44.78, stdev=17.97, samples=264 iops : min= 1, max= 25, avg=10.55, stdev= 4.53, samples=264 write: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6236KiB/136448msec); 0 zone resets clat (usec): min=1098, max=1056.8k, avg=45051.08, stdev=54938.60 lat (usec): min=1098, max=1056.8k, avg=45059.24, stdev=54940.93 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1418], 10.00th=[ 2245], | 20.00th=[ 4752], 30.00th=[ 9765], 40.00th=[ 20055], | 50.00th=[ 32900], 60.00th=[ 44827], 70.00th=[ 57934], | 80.00th=[ 73925], 90.00th=[ 103285], 95.00th=[ 125305], | 99.00th=[ 212861], 99.50th=[ 278922], 99.90th=[ 530580], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 7, max= 136, per=24.97%, avg=45.45, stdev=20.41, samples=268 iops : min= 1, max= 34, avg=10.71, stdev= 5.13, samples=268 lat (usec) : 50=0.33%, 100=4.00%, 250=0.55%, 500=0.13%, 750=0.16% lat (usec) : 1000=0.07% lat (msec) : 2=4.59%, 4=4.23%, 10=7.03%, 20=8.69%, 50=35.32% lat (msec) : 100=26.95%, 250=7.58%, 500=0.29%, 750=0.03%, 2000=0.03% cpu : usr=0.08%, sys=5.00%, ctx=6863, 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=174KiB/s (179kB/s), 43.4KiB/s-44.4KiB/s (44.4kB/s-45.4kB/s), io=23.4MiB (24.6MB), run=136448-137636msec WRITE: bw=183KiB/s (187kB/s), 45.5KiB/s-46.4KiB/s (46.6kB/s-47.5kB/s), io=24.6MiB (25.7MB), run=136448-137636msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144453: Fri Sep 4 06:16:36 2026 read: IOPS=5, BW=21.9KiB/s (22.4kB/s)(5992KiB/274108msec) clat (msec): min=6, max=1077, avg=38.79, stdev=49.38 lat (msec): min=6, max=1077, avg=38.79, stdev=49.38 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 53], 90.00th=[ 86], 95.00th=[ 111], | 99.00th=[ 192], 99.50th=[ 264], 99.90th=[ 634], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 80, per=27.73%, avg=24.13, stdev=16.24, samples=479 iops : min= 1, max= 20, avg= 5.37, stdev= 4.09, samples=479 write: IOPS=5, BW=22.0KiB/s (23.5kB/s)(6296KiB/274108msec); 0 zone resets clat (msec): min=40, max=474, avg=136.97, stdev=61.02 lat (msec): min=40, max=474, avg=136.97, stdev=61.02 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 75], 20.00th=[ 88], | 30.00th=[ 100], 40.00th=[ 111], 50.00th=[ 123], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 180], 90.00th=[ 220], 95.00th=[ 253], | 99.00th=[ 338], 99.50th=[ 380], 99.90th=[ 451], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 7, max= 56, per=24.80%, avg=22.57, stdev=10.24, samples=536 iops : min= 1, max= 14, avg= 4.98, stdev= 2.62, samples=536 lat (msec) : 10=2.41%, 20=16.63%, 50=19.92%, 100=22.69%, 250=35.35% lat (msec) : 500=2.93%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.16%, ctx=5113, 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=144454: Fri Sep 4 06:16:36 2026 read: IOPS=5, BW=21.6KiB/s (22.1kB/s)(5940KiB/275292msec) clat (msec): min=5, max=1019, avg=37.57, stdev=46.51 lat (msec): min=5, max=1019, avg=37.57, stdev=46.51 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 50], 90.00th=[ 84], 95.00th=[ 110], | 99.00th=[ 194], 99.50th=[ 234], 99.90th=[ 506], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 95, per=27.91%, avg=24.28, stdev=16.23, samples=471 iops : min= 1, max= 23, avg= 5.41, stdev= 4.09, samples=471 write: IOPS=5, BW=23.1KiB/s (23.6kB/s)(6348KiB/275292msec); 0 zone resets clat (msec): min=41, max=689, avg=138.03, stdev=64.20 lat (msec): min=41, max=689, avg=138.03, stdev=64.20 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 88], | 30.00th=[ 101], 40.00th=[ 111], 50.00th=[ 122], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 182], 90.00th=[ 222], 95.00th=[ 262], | 99.00th=[ 351], 99.50th=[ 393], 99.90th=[ 575], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 63, per=25.04%, avg=22.79, stdev= 9.96, samples=535 iops : min= 1, max= 15, avg= 5.03, stdev= 2.53, samples=535 lat (msec) : 10=1.95%, 20=17.38%, 50=19.79%, 100=21.74%, 250=35.87% lat (msec) : 500=3.12%, 750=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.22%, ctx=5108, 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=144455: Fri Sep 4 06:16:36 2026 read: IOPS=5, BW=21.0KiB/s (22.5kB/s)(6028KiB/274189msec) clat (msec): min=5, max=345, avg=37.50, stdev=35.35 lat (msec): min=5, max=345, avg=37.50, stdev=35.35 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 52], 90.00th=[ 84], 95.00th=[ 111], | 99.00th=[ 171], 99.50th=[ 205], 99.90th=[ 262], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 119, per=28.00%, avg=24.36, stdev=16.07, samples=477 iops : min= 1, max= 29, avg= 5.43, stdev= 4.06, samples=477 write: IOPS=5, BW=22.8KiB/s (23.4kB/s)(6260KiB/274189msec); 0 zone resets clat (msec): min=42, max=1110, avg=138.80, stdev=68.12 lat (msec): min=42, max=1110, avg=138.80, stdev=68.11 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 67], 10.00th=[ 75], 20.00th=[ 89], | 30.00th=[ 100], 40.00th=[ 111], 50.00th=[ 124], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 182], 90.00th=[ 220], 95.00th=[ 255], | 99.00th=[ 351], 99.50th=[ 401], 99.90th=[ 684], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 47, per=24.65%, avg=22.43, stdev= 9.99, samples=536 iops : min= 1, max= 11, avg= 4.95, stdev= 2.54, samples=536 lat (msec) : 10=2.25%, 20=15.14%, 50=21.81%, 100=22.20%, 250=35.68% lat (msec) : 500=2.83%, 750=0.07%, 2000=0.03% cpu : usr=0.05%, sys=1.17%, ctx=5021, 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=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=144457: Fri Sep 4 06:16:36 2026 read: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6052KiB/274058msec) clat (msec): min=6, max=507, avg=37.86, stdev=39.44 lat (msec): min=6, max=507, avg=37.86, stdev=39.44 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 54], 90.00th=[ 85], 95.00th=[ 113], | 99.00th=[ 194], 99.50th=[ 226], 99.90th=[ 355], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 7, max= 111, per=28.55%, avg=24.84, stdev=16.74, samples=470 iops : min= 1, max= 27, avg= 5.55, stdev= 4.22, samples=470 write: IOPS=5, BW=22.8KiB/s (23.3kB/s)(6236KiB/274058msec); 0 zone resets clat (msec): min=46, max=1249, avg=138.77, stdev=68.15 lat (msec): min=46, max=1249, avg=138.78, stdev=68.15 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 90], | 30.00th=[ 102], 40.00th=[ 112], 50.00th=[ 124], 60.00th=[ 136], | 70.00th=[ 155], 80.00th=[ 182], 90.00th=[ 222], 95.00th=[ 255], | 99.00th=[ 355], 99.50th=[ 393], 99.90th=[ 617], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 48, per=24.62%, avg=22.41, stdev= 9.83, samples=535 iops : min= 1, max= 12, avg= 4.94, stdev= 2.50, samples=535 lat (msec) : 10=2.54%, 20=17.32%, 50=19.17%, 100=21.58%, 250=36.36% lat (msec) : 500=2.93%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.19%, ctx=5151, 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=87.2KiB/s (89.3kB/s), 21.6KiB/s-22.1KiB/s (22.1kB/s-22.6kB/s), io=23.4MiB (24.6MB), run=274058-275292msec WRITE: bw=91.3KiB/s (93.5kB/s), 22.8KiB/s-23.1KiB/s (23.3kB/s-23.6kB/s), io=24.6MiB (25.7MB), run=274058-275292msec 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=144516: Fri Sep 4 06:17:21 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(5920KiB/36484msec) clat (usec): min=36, max=345033, avg=48179.84, stdev=41070.51 lat (usec): min=36, max=345035, avg=48181.12, stdev=41070.63 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 60], 10.00th=[ 70], 20.00th=[ 113], | 30.00th=[ 27132], 40.00th=[ 36439], 50.00th=[ 45351], 60.00th=[ 52167], | 70.00th=[ 63701], 80.00th=[ 77071], 90.00th=[ 94897], 95.00th=[120062], | 99.00th=[160433], 99.50th=[189793], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 30, max= 349, per=25.75%, avg=167.41, stdev=71.70, samples=69 iops : min= 1, max= 21, avg= 9.65, stdev= 4.52, samples=69 write: IOPS=10, BW=175KiB/s (179kB/s)(6368KiB/36484msec); 0 zone resets clat (usec): min=1514, max=307380, avg=45880.57, stdev=49851.12 lat (usec): min=1516, max=307383, avg=45883.38, stdev=49851.41 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2089], 10.00th=[ 3228], 20.00th=[ 5538], | 30.00th=[ 9765], 40.00th=[ 16188], 50.00th=[ 28181], 60.00th=[ 43779], | 70.00th=[ 63701], 80.00th=[ 82314], 90.00th=[110625], 95.00th=[135267], | 99.00th=[248513], 99.50th=[299893], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 21, max= 474, per=25.72%, avg=175.93, stdev=76.10, samples=71 iops : min= 1, max= 29, avg=10.20, stdev= 4.80, samples=71 lat (usec) : 50=0.91%, 100=8.07%, 250=1.56%, 500=0.52%, 1000=0.39% lat (msec) : 2=2.47%, 4=5.08%, 10=8.72%, 20=7.16%, 50=25.26% lat (msec) : 100=28.65%, 250=10.68%, 500=0.52% cpu : usr=0.05%, sys=4.74%, ctx=1452, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144517: Fri Sep 4 06:17:21 2026 read: IOPS=9, BW=156KiB/s (160kB/s)(5744KiB/36834msec) clat (usec): min=41, max=238946, avg=52628.95, stdev=39276.90 lat (usec): min=42, max=238947, avg=52630.21, stdev=39276.93 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 64], 10.00th=[ 77], 20.00th=[ 19530], | 30.00th=[ 35390], 40.00th=[ 42730], 50.00th=[ 48497], 60.00th=[ 60031], | 70.00th=[ 68682], 80.00th=[ 81265], 90.00th=[ 99091], 95.00th=[116917], | 99.00th=[179307], 99.50th=[235930], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 381, per=24.25%, avg=157.61, stdev=65.10, samples=71 iops : min= 1, max= 23, avg= 9.06, stdev= 4.12, samples=71 write: IOPS=11, BW=178KiB/s (182kB/s)(6544KiB/36834msec); 0 zone resets clat (usec): min=1525, max=340351, avg=43097.03, stdev=45566.51 lat (usec): min=1527, max=340352, avg=43133.63, stdev=45642.57 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1958], 10.00th=[ 3589], 20.00th=[ 7898], | 30.00th=[ 12125], 40.00th=[ 17433], 50.00th=[ 27657], 60.00th=[ 39584], | 70.00th=[ 54789], 80.00th=[ 74974], 90.00th=[105382], 95.00th=[131597], | 99.00th=[191890], 99.50th=[198181], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 31, max= 416, per=25.78%, avg=176.33, stdev=80.53, samples=72 iops : min= 1, max= 26, avg=10.24, stdev= 5.13, samples=72 lat (usec) : 50=0.65%, 100=6.12%, 250=1.17%, 500=0.39%, 750=0.13% lat (msec) : 2=3.12%, 4=3.12%, 10=6.90%, 20=10.55%, 50=27.99% lat (msec) : 100=29.69%, 250=9.90%, 500=0.26% cpu : usr=0.11%, sys=5.16%, ctx=1506, 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=144518: Fri Sep 4 06:17:21 2026 read: IOPS=11, BW=176KiB/s (180kB/s)(6256KiB/35520msec) clat (usec): min=37, max=271858, avg=53269.01, stdev=40492.81 lat (usec): min=38, max=271859, avg=53273.59, stdev=40491.51 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 61], 10.00th=[ 72], 20.00th=[ 306], | 30.00th=[ 34341], 40.00th=[ 42730], 50.00th=[ 50594], 60.00th=[ 60556], | 70.00th=[ 71828], 80.00th=[ 83362], 90.00th=[103285], 95.00th=[119014], | 99.00th=[173016], 99.50th=[189793], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 62, max= 318, per=27.22%, avg=176.94, stdev=62.89, samples=69 iops : min= 3, max= 19, avg=10.26, stdev= 3.98, samples=69 write: IOPS=10, BW=170KiB/s (174kB/s)(6032KiB/35520msec); 0 zone resets clat (usec): min=1434, max=273972, avg=38694.63, stdev=42080.53 lat (usec): min=1436, max=273976, avg=38696.95, stdev=42080.63 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1844], 10.00th=[ 2835], 20.00th=[ 6128], | 30.00th=[ 8717], 40.00th=[ 13566], 50.00th=[ 22414], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 71828], 90.00th=[ 99091], 95.00th=[117965], | 99.00th=[183501], 99.50th=[238027], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 347, per=24.57%, avg=168.04, stdev=67.03, samples=69 iops : min= 1, max= 21, avg= 9.70, stdev= 4.25, samples=69 lat (usec) : 50=1.04%, 100=7.94%, 250=1.17%, 500=0.26%, 750=0.13% lat (msec) : 2=2.73%, 4=4.17%, 10=10.42%, 20=7.03%, 50=25.13% lat (msec) : 100=29.56%, 250=10.16%, 500=0.26% cpu : usr=0.08%, sys=5.26%, ctx=1440, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144519: Fri Sep 4 06:17:21 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(6032KiB/35734msec) clat (usec): min=42, max=263919, avg=51771.99, stdev=44197.31 lat (usec): min=42, max=263921, avg=51773.41, stdev=44197.29 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 103], | 30.00th=[ 31327], 40.00th=[ 40633], 50.00th=[ 48497], 60.00th=[ 56886], | 70.00th=[ 67634], 80.00th=[ 81265], 90.00th=[100140], 95.00th=[123208], | 99.00th=[240124], 99.50th=[258999], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 31, max= 375, per=25.89%, avg=168.26, stdev=78.19, samples=69 iops : min= 1, max= 23, avg= 9.72, stdev= 4.94, samples=69 write: IOPS=10, BW=175KiB/s (179kB/s)(6256KiB/35734msec); 0 zone resets clat (usec): min=1464, max=280620, avg=40540.18, stdev=45458.88 lat (usec): min=1466, max=280622, avg=40544.25, stdev=45457.64 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1876], 10.00th=[ 2933], 20.00th=[ 5538], | 30.00th=[ 8586], 40.00th=[ 11994], 50.00th=[ 20841], 60.00th=[ 39060], | 70.00th=[ 55313], 80.00th=[ 71828], 90.00th=[ 98042], 95.00th=[121111], | 99.00th=[231736], 99.50th=[270533], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 344, per=25.66%, avg=175.49, stdev=72.09, samples=69 iops : min= 1, max= 21, avg=10.16, stdev= 4.55, samples=69 lat (usec) : 50=0.65%, 100=9.11%, 250=0.91%, 500=0.39%, 750=0.13% lat (msec) : 2=2.99%, 4=4.56%, 10=10.16%, 20=8.72%, 50=21.88% lat (msec) : 100=30.86%, 250=8.98%, 500=0.65% cpu : usr=0.07%, sys=4.80%, ctx=1454, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=650KiB/s (666kB/s), 156KiB/s-176KiB/s (160kB/s-180kB/s), io=23.4MiB (24.5MB), run=35520-36834msec WRITE: bw=684KiB/s (701kB/s), 170KiB/s-178KiB/s (174kB/s-182kB/s), io=24.6MiB (25.8MB), run=35520-36834msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144521: Fri Sep 4 06:18:06 2026 read: IOPS=4, BW=73.2KiB/s (75.0kB/s)(5920KiB/80825msec) clat (msec): min=8, max=474, avg=50.26, stdev=54.02 lat (msec): min=8, max=474, avg=50.26, stdev=54.02 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 49], 80.00th=[ 62], 90.00th=[ 97], 95.00th=[ 157], | 99.00th=[ 271], 99.50th=[ 435], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 30, max= 351, per=28.58%, avg=84.61, stdev=55.63, samples=138 iops : min= 1, max= 21, avg= 4.48, stdev= 3.55, samples=138 write: IOPS=4, BW=78.8KiB/s (80.7kB/s)(6368KiB/80825msec); 0 zone resets clat (msec): min=42, max=664, avg=156.05, stdev=84.13 lat (msec): min=42, max=664, avg=156.06, stdev=84.13 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 69], 10.00th=[ 80], 20.00th=[ 96], | 30.00th=[ 108], 40.00th=[ 118], 50.00th=[ 129], 60.00th=[ 146], | 70.00th=[ 167], 80.00th=[ 207], 90.00th=[ 275], 95.00th=[ 342], | 99.00th=[ 443], 99.50th=[ 527], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 30, max= 160, per=25.83%, avg=80.32, stdev=38.84, samples=156 iops : min= 1, max= 10, avg= 4.23, stdev= 2.49, samples=156 lat (msec) : 10=0.65%, 20=9.38%, 50=24.48%, 100=21.48%, 250=36.85% lat (msec) : 500=6.90%, 750=0.26% cpu : usr=0.05%, sys=1.25%, ctx=1442, 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=144522: Fri Sep 4 06:18:06 2026 read: IOPS=4, BW=71.6KiB/s (73.4kB/s)(5744KiB/80171msec) clat (msec): min=6, max=387, avg=47.06, stdev=50.52 lat (msec): min=6, max=387, avg=47.07, stdev=50.52 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 60], 90.00th=[ 84], 95.00th=[ 136], | 99.00th=[ 338], 99.50th=[ 363], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 28, max= 320, per=29.58%, avg=87.56, stdev=61.48, samples=128 iops : min= 1, max= 20, avg= 4.70, stdev= 3.93, samples=128 write: IOPS=5, BW=81.6KiB/s (83.6kB/s)(6544KiB/80171msec); 0 zone resets clat (msec): min=53, max=506, avg=154.43, stdev=79.44 lat (msec): min=53, max=506, avg=154.44, stdev=79.44 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 72], 10.00th=[ 81], 20.00th=[ 92], | 30.00th=[ 104], 40.00th=[ 120], 50.00th=[ 130], 60.00th=[ 144], | 70.00th=[ 169], 80.00th=[ 213], 90.00th=[ 271], 95.00th=[ 321], | 99.00th=[ 405], 99.50th=[ 451], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 30, max= 191, per=26.76%, avg=83.23, stdev=38.14, samples=154 iops : min= 1, max= 11, avg= 4.41, stdev= 2.46, samples=154 lat (msec) : 10=0.65%, 20=9.90%, 50=24.22%, 100=23.44%, 250=34.38% lat (msec) : 500=7.29%, 750=0.13% cpu : usr=0.04%, sys=1.27%, ctx=1380, 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=144523: Fri Sep 4 06:18:06 2026 read: IOPS=4, BW=79.8KiB/s (81.7kB/s)(6256KiB/78385msec) clat (msec): min=8, max=471, avg=48.65, stdev=49.03 lat (msec): min=8, max=471, avg=48.65, stdev=49.03 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 37], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 65], 90.00th=[ 90], 95.00th=[ 132], | 99.00th=[ 279], 99.50th=[ 347], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 30, max= 318, per=31.62%, avg=93.61, stdev=61.18, samples=132 iops : min= 1, max= 19, avg= 5.08, stdev= 3.87, samples=132 write: IOPS=4, BW=76.0KiB/s (78.8kB/s)(6032KiB/78385msec); 0 zone resets clat (msec): min=44, max=553, avg=157.27, stdev=86.59 lat (msec): min=44, max=553, avg=157.27, stdev=86.59 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 84], 20.00th=[ 95], | 30.00th=[ 106], 40.00th=[ 117], 50.00th=[ 131], 60.00th=[ 144], | 70.00th=[ 171], 80.00th=[ 201], 90.00th=[ 279], 95.00th=[ 338], | 99.00th=[ 468], 99.50th=[ 531], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 29, max= 191, per=25.03%, avg=77.84, stdev=37.51, samples=152 iops : min= 1, max= 11, avg= 4.08, stdev= 2.44, samples=152 lat (msec) : 10=0.78%, 20=9.51%, 50=25.91%, 100=22.79%, 250=33.07% lat (msec) : 500=7.68%, 750=0.26% cpu : usr=0.05%, sys=1.27%, ctx=1394, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144524: Fri Sep 4 06:18:06 2026 read: IOPS=4, BW=74.8KiB/s (76.6kB/s)(6032KiB/80667msec) clat (msec): min=8, max=355, avg=49.29, stdev=48.65 lat (msec): min=8, max=355, avg=49.30, stdev=48.65 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 58], 90.00th=[ 99], 95.00th=[ 165], | 99.00th=[ 264], 99.50th=[ 275], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 30, max= 288, per=29.72%, avg=87.96, stdev=55.35, samples=134 iops : min= 1, max= 18, avg= 4.75, stdev= 3.55, samples=134 write: IOPS=4, BW=77.6KiB/s (79.4kB/s)(6256KiB/80667msec); 0 zone resets clat (msec): min=49, max=599, avg=158.65, stdev=88.84 lat (msec): min=49, max=599, avg=158.65, stdev=88.84 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 73], 10.00th=[ 80], 20.00th=[ 95], | 30.00th=[ 109], 40.00th=[ 120], 50.00th=[ 131], 60.00th=[ 146], | 70.00th=[ 169], 80.00th=[ 205], 90.00th=[ 284], 95.00th=[ 351], | 99.00th=[ 493], 99.50th=[ 550], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 21, max= 189, per=25.35%, avg=78.85, stdev=39.04, samples=156 iops : min= 1, max= 11, avg= 4.17, stdev= 2.49, samples=156 lat (msec) : 10=0.39%, 20=8.20%, 50=27.99%, 100=19.66%, 250=36.59% lat (msec) : 500=6.77%, 750=0.39% cpu : usr=0.05%, sys=1.19%, ctx=1372, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=296KiB/s (303kB/s), 71.6KiB/s-79.8KiB/s (73.4kB/s-81.7kB/s), io=23.4MiB (24.5MB), run=78385-80825msec WRITE: bw=312KiB/s (319kB/s), 76.0KiB/s-81.6KiB/s (78.8kB/s-83.6kB/s), io=24.6MiB (25.8MB), run=78385-80825msec 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=144546: Fri Sep 4 06:18:21 2026 read: IOPS=1, BW=1663KiB/s (1703kB/s)(7168KiB/4310msec) clat (msec): min=80, max=823, avg=253.25, stdev=267.47 lat (msec): min=80, max=823, avg=253.26, stdev=267.47 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 85], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 146], 60.00th=[ 205], | 70.00th=[ 205], 80.00th=[ 338], 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= 1928, max= 4168, per=66.56%, avg=2522.00, stdev=1098.17, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1188KiB/s (1216kB/s)(5120KiB/4310msec); 0 zone resets clat (msec): min=352, max=623, avg=471.41, stdev=138.49 lat (msec): min=352, max=625, avg=471.75, stdev=138.80 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1928, max= 3703, per=47.70%, avg=2530.67, stdev=1015.40, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=16.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.02%, sys=4.08%, ctx=71, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144547: Fri Sep 4 06:18:21 2026 read: IOPS=0, BW=379KiB/s (388kB/s)(2048KiB/5404msec) clat (msec): min=127, max=301, avg=214.74, stdev=122.75 lat (msec): min=127, max=301, avg=214.74, stdev=122.75 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 129], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 129], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 1984, max= 2019, per=52.82%, avg=2001.50, stdev=24.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1895KiB/s (1940kB/s)(10.0MiB/5404msec); 0 zone resets clat (msec): min=239, max=1464, avg=493.11, stdev=365.27 lat (msec): min=239, max=1464, avg=493.41, stdev=365.23 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 305], 40.00th=[ 313], 50.00th=[ 347], 60.00th=[ 372], | 70.00th=[ 451], 80.00th=[ 600], 90.00th=[ 609], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 1858, max= 4096, per=48.22%, avg=2558.14, stdev=994.35, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (msec) : 250=25.00%, 500=50.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.89%, ctx=114, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144548: Fri Sep 4 06:18:21 2026 read: IOPS=1, BW=1261KiB/s (1292kB/s)(6144KiB/4871msec) clat (msec): min=110, max=1035, avg=391.59, stdev=368.17 lat (msec): min=110, max=1035, avg=391.59, stdev=368.17 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 239], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1851, max= 2039, per=52.35%, avg=1983.40, stdev=80.70, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1261KiB/s (1292kB/s)(6144KiB/4871msec); 0 zone resets clat (msec): min=254, max=748, avg=393.35, stdev=184.74 lat (msec): min=254, max=748, avg=393.64, stdev=184.67 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 347], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1368, max= 3856, per=42.93%, avg=2277.50, stdev=1089.28, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.14%, ctx=72, 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=144549: Fri Sep 4 06:18:21 2026 read: IOPS=1, BW=1074KiB/s (1100kB/s)(5120KiB/4768msec) clat (msec): min=149, max=503, avg=321.68, stdev=161.87 lat (msec): min=149, max=503, avg=321.68, stdev=161.87 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 1851, max= 3923, per=68.73%, avg=2604.33, stdev=1145.86, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1503KiB/s (1539kB/s)(7168KiB/4768msec); 0 zone resets clat (msec): min=262, max=1013, avg=441.11, stdev=262.85 lat (msec): min=262, max=1016, avg=441.71, stdev=264.08 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 288], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 334], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1928, max= 4071, per=51.63%, avg=2738.75, stdev=994.62, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=16.67%, 500=66.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.98%, ctx=68, 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=3790KiB/s (3881kB/s), 379KiB/s-1663KiB/s (388kB/s-1703kB/s), io=20.0MiB (20.0MB), run=4310-5404msec WRITE: bw=5306KiB/s (5433kB/s), 1188KiB/s-1895KiB/s (1216kB/s-1940kB/s), io=28.0MiB (29.4MB), run=4310-5404msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144551: Fri Sep 4 06:18:21 2026 read: IOPS=1, BW=1963KiB/s (2010kB/s)(7168KiB/3651msec) clat (usec): min=712, max=478198, avg=272292.60, stdev=144427.13 lat (usec): min=713, max=478199, avg=272294.61, stdev=144427.01 clat percentiles (usec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[233833], | 30.00th=[244319], 40.00th=[244319], 50.00th=[295699], 60.00th=[316670], | 70.00th=[316670], 80.00th=[337642], 90.00th=[480248], 95.00th=[480248], | 99.00th=[480248], 99.50th=[480248], 99.90th=[480248], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 1885, max= 3864, per=54.26%, avg=2365.20, stdev=840.13, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1402KiB/s (1436kB/s)(5120KiB/3651msec); 0 zone resets clat (msec): min=236, max=491, avg=347.38, stdev=102.61 lat (msec): min=237, max=491, avg=347.58, stdev=102.48 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 409], 80.00th=[ 409], 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= 1885, max= 2043, per=32.71%, avg=1996.50, stdev=75.07, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=66.67% cpu : usr=0.00%, sys=14.03%, ctx=225, 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=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=144552: Fri Sep 4 06:18:21 2026 read: IOPS=0, BW=436KiB/s (446kB/s)(2048KiB/4698msec) clat (usec): min=812, max=357812, avg=179312.62, stdev=252437.29 lat (usec): min=813, max=357814, avg=179314.36, stdev=252437.93 clat percentiles (usec): | 1.00th=[ 816], 5.00th=[ 816], 10.00th=[ 816], 20.00th=[ 816], | 30.00th=[ 816], 40.00th=[ 816], 50.00th=[ 816], 60.00th=[358613], | 70.00th=[358613], 80.00th=[358613], 90.00th=[358613], 95.00th=[358613], | 99.00th=[358613], 99.50th=[358613], 99.90th=[358613], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 2015, max= 2019, per=46.27%, avg=2017.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2180KiB/s (2232kB/s)(10.0MiB/4698msec); 0 zone resets clat (msec): min=132, max=1356, avg=432.83, stdev=352.07 lat (msec): min=132, max=1357, avg=433.28, stdev=352.16 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 211], | 30.00th=[ 218], 40.00th=[ 230], 50.00th=[ 326], 60.00th=[ 351], | 70.00th=[ 481], 80.00th=[ 485], 90.00th=[ 542], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 2015, max= 3886, per=41.66%, avg=2542.29, stdev=879.35, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (usec) : 1000=8.33% lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=12.31%, ctx=155, 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=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=144553: Fri Sep 4 06:18:21 2026 read: IOPS=1, BW=1366KiB/s (1398kB/s)(6144KiB/4499msec) clat (usec): min=1265, max=283526, avg=158690.69, stdev=127425.34 lat (usec): min=1267, max=283527, avg=158692.13, stdev=127425.30 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1270], 10.00th=[ 1270], 20.00th=[ 2933], | 30.00th=[ 2933], 40.00th=[175113], 50.00th=[175113], 60.00th=[217056], | 70.00th=[270533], 80.00th=[270533], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 2015, max= 4087, per=77.85%, avg=3393.67, stdev=1193.97, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1366KiB/s (1398kB/s)(6144KiB/4499msec); 0 zone resets clat (msec): min=134, max=1591, avg=579.50, stdev=532.62 lat (msec): min=134, max=1592, avg=579.57, stdev=532.61 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 542], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 1961, max= 2043, per=33.02%, avg=2015.40, stdev=32.75, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 2=8.33%, 4=8.33%, 250=33.33%, 500=25.00%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=8.98%, ctx=186, 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=144554: Fri Sep 4 06:18:21 2026 read: IOPS=1, BW=1145KiB/s (1172kB/s)(5120KiB/4472msec) clat (usec): min=507, max=371624, avg=160625.04, stdev=153907.02 lat (usec): min=508, max=371626, avg=160626.24, stdev=153906.96 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 23200], 40.00th=[ 23200], 50.00th=[173016], 60.00th=[173016], | 70.00th=[235930], 80.00th=[235930], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 4031, max= 4039, per=92.57%, avg=4035.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1603KiB/s (1641kB/s)(7168KiB/4472msec); 0 zone resets clat (msec): min=308, max=1035, avg=522.49, stdev=259.88 lat (msec): min=308, max=1035, avg=522.58, stdev=259.88 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 330], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 401], 60.00th=[ 518], | 70.00th=[ 518], 80.00th=[ 684], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1822, max= 2043, per=32.35%, avg=1974.50, stdev=96.39, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 250=16.67%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=10.76%, ctx=184, 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=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=4359KiB/s (4464kB/s), 436KiB/s-1963KiB/s (446kB/s-2010kB/s), io=20.0MiB (20.0MB), run=3651-4698msec WRITE: bw=6103KiB/s (6249kB/s), 1366KiB/s-2180KiB/s (1398kB/s-2232kB/s), io=28.0MiB (29.4MB), run=3651-4698msec 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=144561: Fri Sep 4 06:18:36 2026 read: IOPS=0, BW=4026KiB/s (4123kB/s)(12.0MiB/3052msec) clat (msec): min=870, max=954, avg=907.84, stdev=43.05 lat (msec): min=870, max=954, avg=907.84, stdev=43.05 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 8094, max= 8192, per=100.00%, avg=8143.00, stdev=69.30, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=10.36%, ctx=351, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144562: Fri Sep 4 06:18:36 2026 read: IOPS=0, BW=1451KiB/s (1486kB/s)(4096KiB/2823msec) clat (nsec): min=919118k, max=919118k, avg=919117643.00, stdev= 0.00 lat (nsec): min=919121k, max=919121k, avg=919120703.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2902KiB/s (2972kB/s)(8192KiB/2823msec); 0 zone resets clat (msec): min=399, max=1255, avg=827.63, stdev=605.48 lat (msec): min=399, max=1256, avg=828.11, stdev=605.50 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 1250], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8159, max= 8159, per=87.30%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.07%, ctx=135, 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=144563: Fri Sep 4 06:18:36 2026 write: IOPS=0, BW=3505KiB/s (3589kB/s)(12.0MiB/3506msec); 0 zone resets clat (msec): min=778, max=1290, avg=1092.33, stdev=275.26 lat (msec): min=778, max=1291, avg=1092.85, stdev=275.41 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8094, max= 8159, per=86.95%, avg=8126.50, stdev=45.96, 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=6.88%, ctx=98, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144564: Fri Sep 4 06:18:36 2026 write: IOPS=1, BW=4528KiB/s (4636kB/s)(12.0MiB/2714msec); 0 zone resets clat (msec): min=413, max=1637, avg=824.87, stdev=703.79 lat (msec): min=414, max=1639, avg=825.87, stdev=704.23 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 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=16189, max=16189, per=100.00%, avg=16189.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.42%, ctx=58, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5368KiB/s (5497kB/s), 1451KiB/s-4026KiB/s (1486kB/s-4123kB/s), io=16.0MiB (16.8MB), run=2823-3052msec WRITE: bw=9346KiB/s (9571kB/s), 2902KiB/s-4528KiB/s (2972kB/s-4636kB/s), io=32.0MiB (33.6MB), run=2714-3506msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144565: Fri Sep 4 06:18:36 2026 read: IOPS=0, BW=3367KiB/s (3448kB/s)(12.0MiB/3649msec) clat (msec): min=720, max=1506, avg=1201.94, stdev=421.96 lat (msec): min=720, max=1506, avg=1201.94, stdev=421.97 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8031, max= 8175, per=100.00%, avg=8103.00, stdev=101.82, 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=2.96%, ctx=59, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144566: Fri Sep 4 06:18:36 2026 read: IOPS=0, BW=1165KiB/s (1193kB/s)(4096KiB/3515msec) clat (nsec): min=1777.9M, max=1777.9M, avg=1777943900.00, stdev= 0.00 lat (nsec): min=1777.9M, max=1777.9M, avg=1777947767.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1770], 5.00th=[ 1770], 10.00th=[ 1770], 20.00th=[ 1770], | 30.00th=[ 1770], 40.00th=[ 1770], 50.00th=[ 1770], 60.00th=[ 1770], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] 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=2331KiB/s (2387kB/s)(8192KiB/3515msec); 0 zone resets clat (msec): min=571, max=939, avg=755.54, stdev=260.23 lat (msec): min=575, max=943, avg=759.45, stdev=260.38 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8175, max= 8175, per=97.82%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.27%, 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=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=144567: Fri Sep 4 06:18:36 2026 write: IOPS=0, BW=3134KiB/s (3209kB/s)(12.0MiB/3921msec); 0 zone resets clat (msec): min=762, max=1649, avg=1266.49, stdev=455.60 lat (msec): min=763, max=1650, avg=1267.14, stdev=455.79 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7968, max= 8175, per=96.58%, avg=8071.50, stdev=146.37, 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=2.65%, ctx=44, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144568: Fri Sep 4 06:18:36 2026 write: IOPS=0, BW=4062KiB/s (4160kB/s)(12.0MiB/3025msec); 0 zone resets clat (msec): min=412, max=1752, avg=920.39, stdev=726.79 lat (msec): min=413, max=1756, avg=922.30, stdev=728.58 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 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= 8031, max= 8159, per=96.86%, avg=8095.00, stdev=90.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.33%, ctx=130, 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=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=4490KiB/s (4598kB/s), 1165KiB/s-3367KiB/s (1193kB/s-3448kB/s), io=16.0MiB (16.8MB), run=3515-3649msec WRITE: bw=8357KiB/s (8558kB/s), 2331KiB/s-4062KiB/s (2387kB/s-4160kB/s), io=32.0MiB (33.6MB), run=3025-3921msec