== sanity test 398b: DIO and buffer IO race ============== 06:24:32 (1787912672) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.55107 s, 7.7 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=178280: Fri Aug 28 06:27:09 2026 read: IOPS=10, BW=43.0KiB/s (45.0kB/s)(5992KiB/136323msec) clat (usec): min=34, max=702552, avg=49718.36, stdev=38338.10 lat (usec): min=35, max=702553, avg=49719.73, stdev=38338.22 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10552], 10.00th=[ 16909], 20.00th=[ 22938], | 30.00th=[ 28705], 40.00th=[ 34341], 50.00th=[ 41681], 60.00th=[ 50070], | 70.00th=[ 57934], 80.00th=[ 70779], 90.00th=[ 94897], 95.00th=[111674], | 99.00th=[168821], 99.50th=[210764], 99.90th=[287310], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 5, max= 111, per=25.04%, avg=43.57, stdev=18.55, samples=267 iops : min= 1, max= 27, avg=10.23, stdev= 4.65, samples=267 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(6296KiB/136323msec); 0 zone resets clat (usec): min=894, max=420428, avg=38962.04, stdev=43477.34 lat (usec): min=895, max=420429, avg=38963.92, stdev=43477.39 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1483], 20.00th=[ 3523], | 30.00th=[ 7111], 40.00th=[ 15664], 50.00th=[ 26346], 60.00th=[ 36439], | 70.00th=[ 49021], 80.00th=[ 67634], 90.00th=[ 98042], 95.00th=[124257], | 99.00th=[181404], 99.50th=[227541], 99.90th=[299893], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 7, max= 134, per=25.14%, avg=45.75, stdev=22.79, samples=267 iops : min= 1, max= 33, avg=10.78, stdev= 5.73, samples=267 lat (usec) : 50=0.23%, 100=1.27%, 250=0.23%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.23% lat (msec) : 2=6.51%, 4=4.10%, 10=7.06%, 20=9.86%, 50=35.74% lat (msec) : 100=25.72%, 250=8.79%, 500=0.16%, 750=0.03% cpu : usr=0.06%, sys=4.16%, ctx=6270, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178282: Fri Aug 28 06:27:09 2026 read: IOPS=10, BW=43.6KiB/s (44.6kB/s)(5940KiB/136304msec) clat (usec): min=47, max=344563, avg=50626.97, stdev=35616.72 lat (usec): min=48, max=344563, avg=50634.12, stdev=35612.74 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 12911], 10.00th=[ 17695], 20.00th=[ 23725], | 30.00th=[ 29492], 40.00th=[ 35914], 50.00th=[ 42206], 60.00th=[ 49546], | 70.00th=[ 57934], 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[119014], | 99.00th=[179307], 99.50th=[191890], 99.90th=[304088], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 5, max= 112, per=25.02%, avg=43.53, stdev=19.58, samples=265 iops : min= 1, max= 28, avg=10.22, stdev= 4.92, samples=265 write: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6348KiB/136304msec); 0 zone resets clat (usec): min=865, max=678870, avg=38193.55, stdev=45557.06 lat (usec): min=866, max=678872, avg=38196.24, stdev=45556.21 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1450], 20.00th=[ 3097], | 30.00th=[ 6521], 40.00th=[ 15795], 50.00th=[ 24773], 60.00th=[ 34341], | 70.00th=[ 47449], 80.00th=[ 65799], 90.00th=[ 93848], 95.00th=[123208], | 99.00th=[191890], 99.50th=[231736], 99.90th=[358613], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 7, max= 136, per=25.42%, avg=46.26, stdev=23.53, samples=266 iops : min= 1, max= 34, avg=10.91, stdev= 5.92, samples=266 lat (usec) : 50=0.10%, 100=1.04%, 250=0.20%, 750=0.03%, 1000=0.23% lat (msec) : 2=7.13%, 4=4.72%, 10=6.61%, 20=9.80%, 50=36.36% lat (msec) : 100=25.20%, 250=8.40%, 500=0.16%, 750=0.03% cpu : usr=0.07%, sys=4.23%, ctx=6180, 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=178284: Fri Aug 28 06:27:09 2026 read: IOPS=11, BW=44.6KiB/s (45.6kB/s)(6028KiB/135287msec) clat (usec): min=33, max=306643, avg=50288.42, stdev=37150.87 lat (usec): min=34, max=306645, avg=50290.12, stdev=37151.26 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 9896], 10.00th=[ 16581], 20.00th=[ 23462], | 30.00th=[ 29230], 40.00th=[ 34866], 50.00th=[ 41681], 60.00th=[ 49546], | 70.00th=[ 58983], 80.00th=[ 71828], 90.00th=[ 93848], 95.00th=[116917], | 99.00th=[187696], 99.50th=[231736], 99.90th=[304088], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 111, per=25.61%, avg=44.56, stdev=20.36, samples=263 iops : min= 1, max= 27, avg=10.47, stdev= 5.12, samples=263 write: IOPS=11, BW=46.3KiB/s (47.4kB/s)(6260KiB/135287msec); 0 zone resets clat (usec): min=704, max=697829, avg=37692.68, stdev=45734.23 lat (usec): min=704, max=697830, avg=37696.27, stdev=45732.90 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1188], 10.00th=[ 1418], 20.00th=[ 3195], | 30.00th=[ 6194], 40.00th=[ 13566], 50.00th=[ 24773], 60.00th=[ 34866], | 70.00th=[ 46924], 80.00th=[ 65274], 90.00th=[ 92799], 95.00th=[122160], | 99.00th=[191890], 99.50th=[229639], 99.90th=[329253], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 127, per=25.20%, avg=45.86, stdev=23.12, samples=265 iops : min= 1, max= 31, avg=10.81, stdev= 5.81, samples=265 lat (usec) : 50=0.39%, 100=1.24%, 250=0.29%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.46% lat (msec) : 2=6.97%, 4=4.49%, 10=6.77%, 20=9.80%, 50=35.64% lat (msec) : 100=25.49%, 250=7.88%, 500=0.39%, 750=0.03% cpu : usr=0.07%, sys=4.34%, ctx=6266, 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=178285: Fri Aug 28 06:27:09 2026 read: IOPS=11, BW=44.0KiB/s (45.1kB/s)(6052KiB/137503msec) clat (usec): min=38, max=480839, avg=49711.83, stdev=38508.02 lat (usec): min=38, max=480840, avg=49718.16, stdev=38513.12 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 9765], 10.00th=[ 16450], 20.00th=[ 23200], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 56886], 80.00th=[ 70779], 90.00th=[ 92799], 95.00th=[113771], | 99.00th=[183501], 99.50th=[227541], 99.90th=[421528], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 7, max= 111, per=25.19%, avg=43.82, stdev=19.78, samples=267 iops : min= 1, max= 27, avg=10.30, stdev= 4.98, samples=267 write: IOPS=11, BW=45.4KiB/s (46.4kB/s)(6236KiB/137503msec); 0 zone resets clat (usec): min=678, max=685512, avg=39627.71, stdev=45289.95 lat (usec): min=678, max=685513, avg=39632.18, stdev=45288.71 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1188], 10.00th=[ 1516], 20.00th=[ 3720], | 30.00th=[ 8717], 40.00th=[ 17957], 50.00th=[ 26870], 60.00th=[ 38011], | 70.00th=[ 49546], 80.00th=[ 66323], 90.00th=[ 94897], 95.00th=[124257], | 99.00th=[196084], 99.50th=[225444], 99.90th=[304088], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 5, max= 131, per=24.75%, avg=45.05, stdev=22.90, samples=268 iops : min= 1, max= 32, avg=10.60, stdev= 5.75, samples=268 lat (usec) : 50=0.29%, 100=1.56%, 250=0.10%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.49% lat (msec) : 2=6.35%, 4=3.71%, 10=5.89%, 20=10.42%, 50=37.63% lat (msec) : 100=25.29%, 250=7.88%, 500=0.29%, 750=0.03% cpu : usr=0.07%, sys=4.27%, ctx=6520, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=175KiB/s (179kB/s), 43.6KiB/s-44.6KiB/s (44.6kB/s-45.6kB/s), io=23.4MiB (24.6MB), run=135287-137503msec WRITE: bw=183KiB/s (187kB/s), 45.4KiB/s-46.6KiB/s (46.4kB/s-47.7kB/s), io=24.6MiB (25.7MB), run=135287-137503msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178279: Fri Aug 28 06:27:46 2026 read: IOPS=8, BW=34.6KiB/s (35.4kB/s)(5992KiB/173321msec) clat (msec): min=4, max=706, avg=45.09, stdev=47.72 lat (msec): min=4, max=706, avg=45.09, stdev=47.72 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 35], | 70.00th=[ 48], 80.00th=[ 69], 90.00th=[ 105], 95.00th=[ 140], | 99.00th=[ 218], 99.50th=[ 243], 99.90th=[ 414], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 135, per=26.07%, avg=35.72, stdev=26.61, samples=326 iops : min= 1, max= 33, avg= 8.26, stdev= 6.71, samples=326 write: IOPS=9, BW=36.3KiB/s (37.2kB/s)(6296KiB/173321msec); 0 zone resets clat (msec): min=11, max=554, avg=66.91, stdev=56.75 lat (msec): min=11, max=554, avg=66.91, stdev=56.75 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 58], | 70.00th=[ 74], 80.00th=[ 101], 90.00th=[ 140], 95.00th=[ 178], | 99.00th=[ 284], 99.50th=[ 334], 99.90th=[ 518], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 128, per=25.42%, avg=36.61, stdev=26.26, samples=334 iops : min= 1, max= 32, avg= 8.49, stdev= 6.62, samples=334 lat (msec) : 10=2.86%, 20=17.02%, 50=42.32%, 100=22.30%, 250=14.58% lat (msec) : 500=0.81%, 750=0.10% cpu : usr=0.05%, sys=1.54%, ctx=4625, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178281: Fri Aug 28 06:27:46 2026 read: IOPS=8, BW=34.2KiB/s (34.0kB/s)(5940KiB/173877msec) clat (msec): min=4, max=812, avg=44.58, stdev=49.61 lat (msec): min=4, max=812, avg=44.58, stdev=49.61 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 44], 80.00th=[ 66], 90.00th=[ 110], 95.00th=[ 142], | 99.00th=[ 230], 99.50th=[ 257], 99.90th=[ 330], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 136, per=25.98%, avg=35.60, stdev=28.11, samples=324 iops : min= 1, max= 34, avg= 8.23, stdev= 7.09, samples=324 write: IOPS=9, BW=36.5KiB/s (37.4kB/s)(6348KiB/173877msec); 0 zone resets clat (msec): min=9, max=545, avg=67.55, stdev=58.47 lat (msec): min=9, max=545, avg=67.55, stdev=58.47 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 46], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 102], 90.00th=[ 142], 95.00th=[ 186], | 99.00th=[ 279], 99.50th=[ 317], 99.90th=[ 439], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 127, per=25.55%, avg=36.79, stdev=26.57, samples=334 iops : min= 1, max= 31, avg= 8.53, stdev= 6.70, samples=334 lat (msec) : 10=2.99%, 20=18.23%, 50=42.29%, 100=20.25%, 250=15.07% lat (msec) : 500=1.11%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.46%, ctx=4699, 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=178283: Fri Aug 28 06:27:46 2026 read: IOPS=8, BW=34.6KiB/s (35.5kB/s)(6028KiB/174040msec) clat (msec): min=5, max=505, avg=45.89, stdev=46.69 lat (msec): min=5, max=505, avg=45.89, stdev=46.69 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 38], | 70.00th=[ 49], 80.00th=[ 68], 90.00th=[ 100], 95.00th=[ 144], | 99.00th=[ 226], 99.50th=[ 266], 99.90th=[ 397], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 136, per=25.70%, avg=35.21, stdev=26.45, samples=331 iops : min= 1, max= 34, avg= 8.14, stdev= 6.68, samples=331 write: IOPS=8, BW=35.0KiB/s (36.8kB/s)(6260KiB/174040msec); 0 zone resets clat (msec): min=11, max=815, avg=66.71, stdev=58.33 lat (msec): min=11, max=815, avg=66.72, stdev=58.33 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 58], | 70.00th=[ 78], 80.00th=[ 99], 90.00th=[ 136], 95.00th=[ 178], | 99.00th=[ 264], 99.50th=[ 317], 99.90th=[ 527], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 119, per=25.06%, avg=36.09, stdev=26.14, samples=335 iops : min= 1, max= 29, avg= 8.35, stdev= 6.59, samples=335 lat (msec) : 10=2.67%, 20=16.80%, 50=43.10%, 100=22.82%, 250=13.57% lat (msec) : 500=0.94%, 750=0.07%, 1000=0.03% cpu : usr=0.05%, sys=1.51%, ctx=4752, 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=178286: Fri Aug 28 06:27:46 2026 read: IOPS=8, BW=35.1KiB/s (35.0kB/s)(6052KiB/172279msec) clat (msec): min=5, max=513, avg=44.51, stdev=45.52 lat (msec): min=5, max=513, avg=44.51, stdev=45.52 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 48], 80.00th=[ 66], 90.00th=[ 100], 95.00th=[ 138], | 99.00th=[ 222], 99.50th=[ 253], 99.90th=[ 405], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 7, max= 149, per=26.75%, avg=36.65, stdev=27.32, samples=321 iops : min= 1, max= 37, avg= 8.50, stdev= 6.89, samples=321 write: IOPS=9, BW=36.2KiB/s (37.1kB/s)(6236KiB/172279msec); 0 zone resets clat (msec): min=13, max=848, avg=67.02, stdev=57.50 lat (msec): min=13, max=848, avg=67.02, stdev=57.50 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 75], 80.00th=[ 97], 90.00th=[ 140], 95.00th=[ 180], | 99.00th=[ 259], 99.50th=[ 292], 99.90th=[ 409], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 119, per=25.27%, avg=36.39, stdev=26.16, samples=333 iops : min= 1, max= 29, avg= 8.43, stdev= 6.61, samples=333 lat (msec) : 10=2.90%, 20=16.83%, 50=42.94%, 100=22.79%, 250=13.67% lat (msec) : 500=0.81%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.53%, ctx=4670, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=138KiB/s (141kB/s), 34.2KiB/s-35.1KiB/s (34.0kB/s-35.0kB/s), io=23.4MiB (24.6MB), run=172279-174040msec WRITE: bw=144KiB/s (148kB/s), 35.0KiB/s-36.5KiB/s (36.8kB/s-37.4kB/s), io=24.6MiB (25.7MB), run=172279-174040msec 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=178340: Fri Aug 28 06:28:31 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(5920KiB/34477msec) clat (usec): min=40, max=230956, avg=47948.58, stdev=34004.74 lat (usec): min=41, max=230958, avg=47950.50, stdev=34004.41 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 66], 10.00th=[ 1893], 20.00th=[ 23725], | 30.00th=[ 29754], 40.00th=[ 34866], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 57934], 80.00th=[ 68682], 90.00th=[ 88605], 95.00th=[113771], | 99.00th=[154141], 99.50th=[206570], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 351, per=24.79%, avg=171.54, stdev=71.08, samples=68 iops : min= 1, max= 21, avg= 9.94, stdev= 4.49, samples=68 write: IOPS=11, BW=185KiB/s (189kB/s)(6368KiB/34477msec); 0 zone resets clat (usec): min=1260, max=232192, avg=41005.99, stdev=40521.78 lat (usec): min=1262, max=232194, avg=41008.02, stdev=40521.75 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1762], 10.00th=[ 2606], 20.00th=[ 6128], | 30.00th=[ 11076], 40.00th=[ 21103], 50.00th=[ 29230], 60.00th=[ 38011], | 70.00th=[ 52691], 80.00th=[ 71828], 90.00th=[ 96994], 95.00th=[122160], | 99.00th=[181404], 99.50th=[200279], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 350, per=25.70%, avg=187.12, stdev=74.12, samples=67 iops : min= 1, max= 21, avg=10.90, stdev= 4.68, samples=67 lat (usec) : 50=0.52%, 100=3.26%, 250=0.52%, 500=0.26%, 1000=0.13% lat (msec) : 2=4.04%, 4=2.99%, 10=7.68%, 20=7.81%, 50=37.11% lat (msec) : 100=27.60%, 250=8.07% cpu : usr=0.06%, sys=4.81%, ctx=1684, 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=178341: Fri Aug 28 06:28:31 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(5744KiB/34582msec) clat (usec): min=45, max=398804, avg=49833.05, stdev=39263.89 lat (usec): min=46, max=398804, avg=49834.88, stdev=39264.35 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 68], 10.00th=[ 11731], 20.00th=[ 23725], | 30.00th=[ 29492], 40.00th=[ 36439], 50.00th=[ 43254], 60.00th=[ 50070], | 70.00th=[ 61080], 80.00th=[ 72877], 90.00th=[ 93848], 95.00th=[106431], | 99.00th=[196084], 99.50th=[244319], 99.90th=[400557], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 57, max= 382, per=24.55%, avg=169.88, stdev=68.30, samples=66 iops : min= 3, max= 23, avg= 9.82, stdev= 4.30, samples=66 write: IOPS=11, BW=189KiB/s (194kB/s)(6544KiB/34582msec); 0 zone resets clat (usec): min=1319, max=269126, avg=40529.57, stdev=41197.98 lat (usec): min=1321, max=269128, avg=40531.64, stdev=41198.04 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1844], 10.00th=[ 2212], 20.00th=[ 4752], | 30.00th=[ 10421], 40.00th=[ 20055], 50.00th=[ 26084], 60.00th=[ 34866], | 70.00th=[ 55837], 80.00th=[ 71828], 90.00th=[100140], 95.00th=[119014], | 99.00th=[177210], 99.50th=[193987], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 509, per=25.92%, avg=188.69, stdev=96.05, samples=68 iops : min= 1, max= 31, avg=11.01, stdev= 6.07, samples=68 lat (usec) : 50=0.52%, 100=2.86%, 250=0.26%, 500=0.39%, 750=0.26% lat (msec) : 2=4.04%, 4=5.34%, 10=6.38%, 20=8.20%, 50=35.03% lat (msec) : 100=28.13%, 250=8.33%, 500=0.26% cpu : usr=0.06%, sys=5.13%, ctx=1668, 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=178342: Fri Aug 28 06:28:31 2026 read: IOPS=11, BW=181KiB/s (185kB/s)(6256KiB/34562msec) clat (usec): min=38, max=263004, avg=48779.53, stdev=35574.93 lat (usec): min=38, max=263006, avg=48781.85, stdev=35575.61 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 64], 10.00th=[ 1139], 20.00th=[ 22676], | 30.00th=[ 28705], 40.00th=[ 35914], 50.00th=[ 42206], 60.00th=[ 50070], | 70.00th=[ 59507], 80.00th=[ 72877], 90.00th=[ 92799], 95.00th=[109577], | 99.00th=[179307], 99.50th=[204473], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 31, max= 350, per=26.18%, avg=181.15, stdev=70.70, samples=68 iops : min= 1, max= 21, avg=10.53, stdev= 4.45, samples=68 write: IOPS=10, BW=175KiB/s (179kB/s)(6032KiB/34562msec); 0 zone resets clat (usec): min=1377, max=239308, avg=40187.18, stdev=39118.04 lat (usec): min=1379, max=239311, avg=40189.41, stdev=39117.91 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1991], 10.00th=[ 2704], 20.00th=[ 4948], | 30.00th=[ 10814], 40.00th=[ 21103], 50.00th=[ 30016], 60.00th=[ 39060], | 70.00th=[ 52691], 80.00th=[ 69731], 90.00th=[ 96994], 95.00th=[119014], | 99.00th=[164627], 99.50th=[168821], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 471, per=24.07%, avg=175.25, stdev=87.57, samples=67 iops : min= 1, max= 29, avg=10.15, stdev= 5.52, samples=67 lat (usec) : 50=0.65%, 100=4.04%, 250=0.39% lat (msec) : 2=2.86%, 4=5.21%, 10=6.51%, 20=7.42%, 50=36.46% lat (msec) : 100=28.52%, 250=7.81%, 500=0.13% cpu : usr=0.07%, sys=4.72%, ctx=1622, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178343: Fri Aug 28 06:28:31 2026 read: IOPS=11, BW=178KiB/s (183kB/s)(6032KiB/33843msec) clat (usec): min=40, max=245010, avg=46637.43, stdev=36460.55 lat (usec): min=41, max=245012, avg=46639.42, stdev=36460.56 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 60], 10.00th=[ 68], 20.00th=[ 20055], | 30.00th=[ 27919], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 48497], | 70.00th=[ 55837], 80.00th=[ 67634], 90.00th=[ 91751], 95.00th=[114820], | 99.00th=[168821], 99.50th=[217056], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 28, max= 372, per=25.89%, avg=179.15, stdev=75.19, samples=65 iops : min= 1, max= 23, avg=10.40, stdev= 4.76, samples=65 write: IOPS=11, BW=185KiB/s (189kB/s)(6256KiB/33843msec); 0 zone resets clat (usec): min=1244, max=202396, avg=40443.71, stdev=39787.75 lat (usec): min=1246, max=202399, avg=40446.24, stdev=39787.49 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1778], 10.00th=[ 2737], 20.00th=[ 5932], | 30.00th=[ 10159], 40.00th=[ 19268], 50.00th=[ 29754], 60.00th=[ 38011], | 70.00th=[ 51643], 80.00th=[ 67634], 90.00th=[100140], 95.00th=[124257], | 99.00th=[164627], 99.50th=[193987], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 31, max= 446, per=25.07%, avg=182.50, stdev=86.17, samples=66 iops : min= 1, max= 27, avg=10.62, stdev= 5.41, samples=66 lat (usec) : 50=0.91%, 100=5.47%, 250=0.52% lat (msec) : 2=4.17%, 4=3.65%, 10=7.42%, 20=7.94%, 50=35.29% lat (msec) : 100=25.52%, 250=9.11% cpu : usr=0.06%, sys=4.91%, ctx=1680, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=693KiB/s (709kB/s), 166KiB/s-181KiB/s (170kB/s-185kB/s), io=23.4MiB (24.5MB), run=33843-34582msec WRITE: bw=729KiB/s (746kB/s), 175KiB/s-189KiB/s (179kB/s-194kB/s), io=24.6MiB (25.8MB), run=33843-34582msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178335: Fri Aug 28 06:28:44 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5920KiB/47297msec) clat (msec): min=6, max=425, avg=53.10, stdev=54.83 lat (msec): min=6, max=425, avg=53.10, stdev=54.83 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 45], | 70.00th=[ 55], 80.00th=[ 72], 90.00th=[ 109], 95.00th=[ 159], | 99.00th=[ 334], 99.50th=[ 414], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 31, max= 477, per=25.16%, avg=126.29, stdev=85.95, samples=92 iops : min= 1, max= 29, avg= 7.11, stdev= 5.43, samples=92 write: IOPS=8, BW=135KiB/s (138kB/s)(6368KiB/47297msec); 0 zone resets clat (msec): min=11, max=319, avg=68.54, stdev=46.32 lat (msec): min=11, max=319, avg=68.55, stdev=46.32 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 102], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 245], 99.50th=[ 251], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 434, per=26.03%, avg=137.44, stdev=81.99, samples=91 iops : min= 1, max= 27, avg= 7.80, stdev= 5.18, samples=91 lat (msec) : 10=1.30%, 20=11.59%, 50=42.32%, 100=28.13%, 250=15.76% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.76%, ctx=1282, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178336: Fri Aug 28 06:28:44 2026 read: IOPS=7, BW=123KiB/s (126kB/s)(5744KiB/46769msec) clat (msec): min=5, max=336, avg=48.14, stdev=40.85 lat (msec): min=5, max=336, avg=48.14, stdev=40.85 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 43], | 70.00th=[ 57], 80.00th=[ 74], 90.00th=[ 104], 95.00th=[ 132], | 99.00th=[ 171], 99.50th=[ 249], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 30, max= 444, per=25.49%, avg=127.98, stdev=90.69, samples=87 iops : min= 1, max= 27, avg= 7.21, stdev= 5.71, samples=87 write: IOPS=8, BW=140KiB/s (143kB/s)(6544KiB/46769msec); 0 zone resets clat (msec): min=10, max=378, avg=71.70, stdev=53.25 lat (msec): min=10, max=378, avg=71.70, stdev=53.25 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 38], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 69], | 70.00th=[ 84], 80.00th=[ 105], 90.00th=[ 142], 95.00th=[ 186], | 99.00th=[ 249], 99.50th=[ 271], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 31, max= 497, per=26.40%, avg=139.37, stdev=89.81, samples=91 iops : min= 1, max= 31, avg= 7.91, stdev= 5.66, samples=91 lat (msec) : 10=1.43%, 20=12.50%, 50=40.62%, 100=28.65%, 250=16.28% lat (msec) : 500=0.52% cpu : usr=0.04%, sys=1.60%, ctx=1194, 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=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=178337: Fri Aug 28 06:28:44 2026 read: IOPS=8, BW=131KiB/s (134kB/s)(6256KiB/47638msec) clat (msec): min=6, max=305, avg=50.27, stdev=43.07 lat (msec): min=6, max=305, avg=50.27, stdev=43.07 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 20], | 30.00th=[ 26], 40.00th=[ 32], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 54], 80.00th=[ 70], 90.00th=[ 102], 95.00th=[ 142], | 99.00th=[ 215], 99.50th=[ 249], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 508, per=26.37%, avg=132.40, stdev=91.14, samples=91 iops : min= 1, max= 31, avg= 7.48, stdev= 5.75, samples=91 write: IOPS=7, BW=127KiB/s (130kB/s)(6032KiB/47638msec); 0 zone resets clat (msec): min=9, max=332, avg=73.77, stdev=55.11 lat (msec): min=9, max=332, avg=73.77, stdev=55.11 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 38], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 71], | 70.00th=[ 84], 80.00th=[ 111], 90.00th=[ 148], 95.00th=[ 190], | 99.00th=[ 279], 99.50th=[ 317], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 434, per=23.85%, avg=125.93, stdev=77.16, samples=91 iops : min= 1, max= 27, avg= 7.09, stdev= 4.87, samples=91 lat (msec) : 10=2.60%, 20=11.07%, 50=41.67%, 100=26.69%, 250=17.06% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.82%, ctx=1263, 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=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=178338: Fri Aug 28 06:28:44 2026 read: IOPS=8, BW=129KiB/s (132kB/s)(6032KiB/46661msec) clat (msec): min=4, max=410, avg=50.15, stdev=45.78 lat (msec): min=4, max=410, avg=50.15, stdev=45.78 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 54], 80.00th=[ 77], 90.00th=[ 111], 95.00th=[ 133], | 99.00th=[ 218], 99.50th=[ 234], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 30, max= 383, per=25.83%, avg=129.64, stdev=87.40, samples=90 iops : min= 1, max= 23, avg= 7.30, stdev= 5.51, samples=90 write: IOPS=8, BW=134KiB/s (137kB/s)(6256KiB/46661msec); 0 zone resets clat (msec): min=11, max=378, avg=70.88, stdev=51.02 lat (msec): min=11, max=378, avg=70.88, stdev=51.02 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 68], | 70.00th=[ 84], 80.00th=[ 102], 90.00th=[ 134], 95.00th=[ 178], | 99.00th=[ 262], 99.50th=[ 279], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 31, max= 445, per=25.67%, avg=135.54, stdev=89.03, samples=90 iops : min= 1, max= 27, avg= 7.68, stdev= 5.59, samples=90 lat (msec) : 10=1.04%, 20=12.63%, 50=41.28%, 100=28.52%, 250=15.89% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.56%, ctx=1167, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=503KiB/s (515kB/s), 123KiB/s-131KiB/s (126kB/s-134kB/s), io=23.4MiB (24.5MB), run=46661-47638msec WRITE: bw=529KiB/s (542kB/s), 127KiB/s-140KiB/s (130kB/s-143kB/s), io=24.6MiB (25.8MB), run=46661-47638msec 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=178357: Fri Aug 28 06:28:59 2026 read: IOPS=1, BW=1258KiB/s (1288kB/s)(7168KiB/5699msec) clat (usec): min=597, max=297825, avg=158962.98, stdev=121149.94 lat (usec): min=598, max=297826, avg=158964.40, stdev=121150.07 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 1975], | 30.00th=[121111], 40.00th=[121111], 50.00th=[198181], 60.00th=[227541], | 70.00th=[227541], 80.00th=[265290], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 2023, max= 4047, per=96.30%, avg=2862.00, stdev=1000.44, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=898KiB/s (920kB/s)(5120KiB/5699msec); 0 zone resets clat (msec): min=270, max=3068, avg=878.82, stdev=1224.65 lat (msec): min=270, max=3068, avg=878.91, stdev=1224.70 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 2023, max= 4087, per=65.35%, avg=2719.33, stdev=1184.50, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=50.00%, >=2000=8.33% cpu : usr=0.00%, sys=6.53%, ctx=175, 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=178359: Fri Aug 28 06:28:59 2026 read: IOPS=0, BW=297KiB/s (304kB/s)(2048KiB/6890msec) clat (usec): min=1722, max=331451, avg=166586.97, stdev=233153.47 lat (usec): min=1723, max=331453, avg=166588.46, stdev=233154.34 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 1729], 10.00th=[ 1729], 20.00th=[ 1729], | 30.00th=[ 1729], 40.00th=[ 1729], 50.00th=[ 1729], 60.00th=[333448], | 70.00th=[333448], 80.00th=[333448], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2023, max= 2027, per=68.14%, avg=2025.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1486KiB/s (1522kB/s)(10.0MiB/6890msec); 0 zone resets clat (msec): min=52, max=4058, avg=624.24, stdev=1220.43 lat (msec): min=52, max=4058, avg=624.33, stdev=1220.44 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 69], | 30.00th=[ 88], 40.00th=[ 105], 50.00th=[ 129], 60.00th=[ 347], | 70.00th=[ 363], 80.00th=[ 485], 90.00th=[ 550], 95.00th=[ 4044], | 99.00th=[ 4044], 99.50th=[ 4044], 99.90th=[ 4044], 99.95th=[ 4044], | 99.99th=[ 4044] bw ( KiB/s): min= 1831, max= 6083, per=67.33%, avg=2801.60, stdev=1836.44, samples=5 iops : min= 1, max= 5, avg= 2.00, stdev= 1.73, samples=5 lat (msec) : 2=8.33%, 100=25.00%, 250=16.67%, 500=33.33%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=7.50%, ctx=107, 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=178360: Fri Aug 28 06:28:59 2026 read: IOPS=0, BW=996KiB/s (1020kB/s)(6144KiB/6167msec) clat (usec): min=474, max=3182.9k, avg=655210.09, stdev=1244041.03 lat (usec): min=475, max=3182.9k, avg=655211.49, stdev=1244040.86 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], | 20.00th=[ 31589], 30.00th=[ 31589], 40.00th=[ 158335], | 50.00th=[ 158335], 60.00th=[ 252707], 70.00th=[ 304088], | 80.00th=[ 304088], 90.00th=[3170894], 95.00th=[3170894], | 99.00th=[3170894], 99.50th=[3170894], 99.90th=[3170894], | 99.95th=[3170894], 99.99th=[3170894] bw ( KiB/s): min= 1965, max= 3663, per=81.59%, avg=2424.75, stdev=826.23, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=996KiB/s (1020kB/s)(6144KiB/6167msec); 0 zone resets clat (msec): min=127, max=671, avg=333.79, stdev=202.43 lat (msec): min=127, max=671, avg=334.11, stdev=202.31 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 376], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1848, max= 3663, per=55.76%, avg=2320.00, stdev=754.91, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 50=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.04%, ctx=422, 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=178362: Fri Aug 28 06:28:59 2026 read: IOPS=1, BW=1608KiB/s (1647kB/s)(5120KiB/3184msec) clat (usec): min=1425, max=273998, avg=102648.14, stdev=137055.75 lat (usec): min=1427, max=274000, avg=102649.44, stdev=137055.69 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1434], 10.00th=[ 1434], 20.00th=[ 1434], | 30.00th=[ 2040], 40.00th=[ 2040], 50.00th=[ 6194], 60.00th=[ 6194], | 70.00th=[229639], 80.00th=[229639], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2251KiB/s (2305kB/s)(7168KiB/3184msec); 0 zone resets clat (msec): min=93, max=650, avg=330.72, stdev=228.40 lat (msec): min=93, max=650, avg=330.84, stdev=228.41 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 133], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 288], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 617], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1358, max= 4096, per=57.30%, avg=2384.25, stdev=1185.79, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (msec) : 2=8.33%, 4=8.33%, 10=8.33%, 100=8.33%, 250=25.00% lat (msec) : 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=11.88%, ctx=119, 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=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=2972KiB/s (3044kB/s), 297KiB/s-1608KiB/s (304kB/s-1647kB/s), io=20.0MiB (20.0MB), run=3184-6890msec WRITE: bw=4161KiB/s (4261kB/s), 898KiB/s-2251KiB/s (920kB/s-2305kB/s), io=28.0MiB (29.4MB), run=3184-6890msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178355: Fri Aug 28 06:29:00 2026 read: IOPS=1, BW=1114KiB/s (1141kB/s)(7168KiB/6433msec) clat (msec): min=89, max=823, avg=257.86, stdev=255.92 lat (msec): min=89, max=823, avg=257.86, stdev=255.92 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 114], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 209], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 234], 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= 1787, max= 4007, per=100.00%, avg=2903.75, stdev=1256.31, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=796KiB/s (815kB/s)(5120KiB/6433msec); 0 zone resets clat (msec): min=187, max=2677, avg=864.37, stdev=1065.35 lat (msec): min=187, max=2677, avg=864.47, stdev=1065.35 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 1845, max= 2043, per=48.85%, avg=1982.50, stdev=93.41, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.33%, ctx=83, 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=178356: Fri Aug 28 06:29:00 2026 read: IOPS=0, BW=298KiB/s (305kB/s)(2048KiB/6880msec) clat (msec): min=147, max=151, avg=149.45, stdev= 2.20 lat (msec): min=147, max=151, avg=149.45, stdev= 2.20 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 153], | 70.00th=[ 153], 80.00th=[ 153], 90.00th=[ 153], 95.00th=[ 153], | 99.00th=[ 153], 99.50th=[ 153], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 1568, max= 1845, per=58.89%, avg=1706.50, stdev=195.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1488KiB/s (1524kB/s)(10.0MiB/6880msec); 0 zone resets clat (msec): min=88, max=4130, avg=640.74, stdev=1235.73 lat (msec): min=88, max=4130, avg=640.87, stdev=1235.72 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 146], | 30.00th=[ 155], 40.00th=[ 159], 50.00th=[ 230], 60.00th=[ 247], | 70.00th=[ 262], 80.00th=[ 363], 90.00th=[ 634], 95.00th=[ 4144], | 99.00th=[ 4144], 99.50th=[ 4144], 99.90th=[ 4144], 99.95th=[ 4144], | 99.99th=[ 4144] bw ( KiB/s): min= 1568, max= 6023, per=85.71%, avg=3478.20, stdev=1774.29, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.04%, sys=2.73%, ctx=118, 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=178358: Fri Aug 28 06:29:00 2026 read: IOPS=0, BW=870KiB/s (891kB/s)(6144KiB/7065msec) clat (msec): min=46, max=3440, avg=743.15, stdev=1334.81 lat (msec): min=46, max=3440, avg=743.15, stdev=1334.81 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 110], | 30.00th=[ 110], 40.00th=[ 111], 50.00th=[ 111], 60.00th=[ 180], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 2003, max= 6023, per=100.00%, avg=3356.33, stdev=2309.49, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=0, BW=870KiB/s (891kB/s)(6144KiB/7065msec); 0 zone resets clat (msec): min=83, max=1366, avg=402.46, stdev=484.88 lat (msec): min=83, max=1366, avg=402.56, stdev=484.89 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 279], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 1602, max= 2043, per=47.53%, avg=1928.60, stdev=183.69, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=41.67%, 500=16.67%, 750=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.58%, ctx=73, 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=178361: Fri Aug 28 06:29:00 2026 read: IOPS=0, BW=777KiB/s (796kB/s)(5120KiB/6586msec) clat (msec): min=99, max=814, avg=361.42, stdev=345.44 lat (msec): min=99, max=815, avg=361.42, stdev=345.44 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 100], | 30.00th=[ 110], 40.00th=[ 110], 50.00th=[ 129], 60.00th=[ 129], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 4007, max= 4087, per=100.00%, avg=4047.00, stdev=56.57, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1088KiB/s (1114kB/s)(7168KiB/6586msec); 0 zone resets clat (msec): min=139, max=2333, avg=673.66, stdev=762.07 lat (msec): min=139, max=2333, avg=674.07, stdev=762.04 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 194], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 405], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 718], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 1845, max= 2959, per=53.45%, avg=2169.20, stdev=447.85, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 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=2.20%, ctx=50, 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=2899KiB/s (2968kB/s), 298KiB/s-1114KiB/s (305kB/s-1141kB/s), io=20.0MiB (20.0MB), run=6433-7065msec WRITE: bw=4058KiB/s (4156kB/s), 796KiB/s-1488KiB/s (815kB/s-1524kB/s), io=28.0MiB (29.4MB), run=6433-7065msec 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=178370: Fri Aug 28 06:29:14 2026 read: IOPS=0, BW=3139KiB/s (3214kB/s)(12.0MiB/3915msec) clat (msec): min=413, max=2878, avg=1236.50, stdev=1421.65 lat (msec): min=413, max=2878, avg=1236.50, stdev=1421.65 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 6282, max= 8192, per=100.00%, avg=7237.00, stdev=1350.57, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.05%, sys=2.68%, ctx=46, 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=178371: Fri Aug 28 06:29:14 2026 read: IOPS=0, BW=700KiB/s (717kB/s)(4096KiB/5850msec) clat (nsec): min=1309.6M, max=1309.6M, avg=1309613216.00, stdev= 0.00 lat (nsec): min=1309.6M, max=1309.6M, avg=1309616746.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1318], 5.00th=[ 1318], 10.00th=[ 1318], 20.00th=[ 1318], | 30.00th=[ 1318], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1400KiB/s (1434kB/s)(8192KiB/5850msec); 0 zone resets clat (msec): min=439, max=3881, avg=2160.72, stdev=2433.62 lat (msec): min=442, max=3882, avg=2162.22, stdev=2432.15 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 3876], | 70.00th=[ 3876], 80.00th=[ 3876], 90.00th=[ 3876], 95.00th=[ 3876], | 99.00th=[ 3876], 99.50th=[ 3876], 99.90th=[ 3876], 99.95th=[ 3876], | 99.99th=[ 3876] 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 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.81%, ctx=62, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178372: Fri Aug 28 06:29:14 2026 write: IOPS=0, BW=2141KiB/s (2193kB/s)(12.0MiB/5739msec); 0 zone resets clat (msec): min=508, max=4013, avg=1827.83, stdev=1906.46 lat (msec): min=510, max=4018, avg=1830.31, stdev=1908.36 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 4010], 80.00th=[ 4010], 90.00th=[ 4010], 95.00th=[ 4010], | 99.00th=[ 4010], 99.50th=[ 4010], 99.90th=[ 4010], 99.95th=[ 4010], | 99.99th=[ 4010] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.19%, sys=2.28%, ctx=48, 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=178373: Fri Aug 28 06:29:14 2026 write: IOPS=0, BW=2427KiB/s (2485kB/s)(12.0MiB/5063msec); 0 zone resets clat (msec): min=224, max=4243, avg=1616.96, stdev=2275.99 lat (msec): min=224, max=4243, avg=1618.42, stdev=2275.20 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 4245], 80.00th=[ 4245], 90.00th=[ 4245], 95.00th=[ 4245], | 99.00th=[ 4245], 99.50th=[ 4245], 99.90th=[ 4245], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 6370, max= 8192, per=100.00%, avg=7281.00, stdev=1288.35, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.21%, ctx=72, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2801KiB/s (2868kB/s), 700KiB/s-3139KiB/s (717kB/s-3214kB/s), io=16.0MiB (16.8MB), run=3915-5850msec WRITE: bw=5601KiB/s (5736kB/s), 1400KiB/s-2427KiB/s (1434kB/s-2485kB/s), io=32.0MiB (33.6MB), run=5063-5850msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178374: Fri Aug 28 06:29:15 2026 read: IOPS=0, BW=2692KiB/s (2756kB/s)(12.0MiB/4565msec) clat (msec): min=678, max=2764, avg=1406.57, stdev=1177.10 lat (msec): min=678, max=2764, avg=1406.57, stdev=1177.10 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 8110, max= 8175, per=100.00%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=8.79%, ctx=800, 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=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=178375: Fri Aug 28 06:29:15 2026 read: IOPS=0, BW=824KiB/s (844kB/s)(4096KiB/4971msec) clat (nsec): min=928562k, max=928562k, avg=928561616.00, stdev= 0.00 lat (nsec): min=928564k, max=928564k, avg=928564294.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 927], 5.00th=[ 927], 10.00th=[ 927], 20.00th=[ 927], | 30.00th=[ 927], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 927], | 70.00th=[ 927], 80.00th=[ 927], 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1648KiB/s (1688kB/s)(8192KiB/4971msec); 0 zone resets clat (msec): min=955, max=2929, avg=1942.14, stdev=1395.67 lat (msec): min=955, max=2932, avg=1944.04, stdev=1397.96 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 2937], | 70.00th=[ 2937], 80.00th=[ 2937], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] 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 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.02%, sys=3.32%, ctx=126, 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=178376: Fri Aug 28 06:29:15 2026 write: IOPS=0, BW=2258KiB/s (2312kB/s)(12.0MiB/5442msec); 0 zone resets clat (msec): min=319, max=3966, avg=1718.89, stdev=1966.14 lat (msec): min=326, max=3967, avg=1722.19, stdev=1963.38 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 3977], 80.00th=[ 3977], 90.00th=[ 3977], 95.00th=[ 3977], | 99.00th=[ 3977], 99.50th=[ 3977], 99.90th=[ 3977], 99.95th=[ 3977], | 99.99th=[ 3977] bw ( KiB/s): min= 7922, max= 7984, per=100.00%, avg=7953.00, stdev=43.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.56%, ctx=49, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178377: Fri Aug 28 06:29:15 2026 write: IOPS=0, BW=2496KiB/s (2556kB/s)(12.0MiB/4923msec); 0 zone resets clat (msec): min=666, max=2739, avg=1534.62, stdev=1076.83 lat (msec): min=667, max=2739, avg=1535.04, stdev=1076.70 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 2735], 80.00th=[ 2735], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.82%, ctx=51, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3296KiB/s (3375kB/s), 824KiB/s-2692KiB/s (844kB/s-2756kB/s), io=16.0MiB (16.8MB), run=4565-4971msec WRITE: bw=6021KiB/s (6166kB/s), 1648KiB/s-2496KiB/s (1688kB/s-2556kB/s), io=32.0MiB (33.6MB), run=4923-5442msec