== sanity test 398b: DIO and buffer IO race ============== 19:45:07 (1786751107) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.58513 s, 6.6 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=179632: Fri Aug 14 19:47:49 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5992KiB/136635msec) clat (usec): min=43, max=1135.5k, avg=50113.82, stdev=41777.05 lat (usec): min=43, max=1135.5k, avg=50119.15, stdev=41776.99 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 14353], 10.00th=[ 19530], | 20.00th=[ 25297], 30.00th=[ 30540], 40.00th=[ 36963], | 50.00th=[ 43254], 60.00th=[ 50070], 70.00th=[ 57934], | 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[ 105382], | 99.00th=[ 158335], 99.50th=[ 183501], 99.90th=[ 254804], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 103, per=25.38%, avg=43.91, stdev=17.95, samples=265 iops : min= 1, max= 25, avg=10.31, stdev= 4.51, samples=265 write: IOPS=11, BW=46.1KiB/s (47.2kB/s)(6296KiB/136635msec); 0 zone resets clat (usec): min=1083, max=272408, avg=38702.71, stdev=39628.80 lat (usec): min=1084, max=272411, avg=38704.74, stdev=39628.89 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1516], 10.00th=[ 2376], 20.00th=[ 4686], | 30.00th=[ 8717], 40.00th=[ 17695], 50.00th=[ 27919], 60.00th=[ 36439], | 70.00th=[ 49546], 80.00th=[ 67634], 90.00th=[ 93848], 95.00th=[119014], | 99.00th=[164627], 99.50th=[200279], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 126, per=25.60%, avg=46.34, stdev=18.56, samples=264 iops : min= 1, max= 31, avg=10.92, stdev= 4.67, samples=264 lat (usec) : 50=0.07%, 100=1.20%, 250=0.29%, 500=0.13%, 1000=0.03% lat (msec) : 2=4.49%, 4=4.36%, 10=7.88%, 20=8.37%, 50=38.70% lat (msec) : 100=26.95%, 250=7.39%, 500=0.10%, 2000=0.03% cpu : usr=0.08%, sys=4.94%, ctx=6805, 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=179633: Fri Aug 14 19:47:49 2026 read: IOPS=10, BW=43.4KiB/s (44.5kB/s)(5940KiB/136757msec) clat (usec): min=33, max=328265, avg=49624.59, stdev=29896.05 lat (usec): min=34, max=328267, avg=49635.63, stdev=29896.72 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 14746], 10.00th=[ 20055], 20.00th=[ 26608], | 30.00th=[ 31851], 40.00th=[ 37487], 50.00th=[ 43254], 60.00th=[ 50070], | 70.00th=[ 59507], 80.00th=[ 70779], 90.00th=[ 87557], 95.00th=[103285], | 99.00th=[147850], 99.50th=[170918], 99.90th=[217056], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7, max= 102, per=25.14%, avg=43.48, stdev=17.44, samples=266 iops : min= 1, max= 25, avg=10.20, stdev= 4.38, samples=266 write: IOPS=11, BW=46.4KiB/s (47.5kB/s)(6348KiB/136757msec); 0 zone resets clat (usec): min=1167, max=1002.2k, avg=39300.68, stdev=46076.99 lat (usec): min=1169, max=1002.2k, avg=39307.56, stdev=46079.76 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1549], 10.00th=[ 2180], | 20.00th=[ 5014], 30.00th=[ 8717], 40.00th=[ 16909], | 50.00th=[ 27132], 60.00th=[ 38536], 70.00th=[ 51119], | 80.00th=[ 66847], 90.00th=[ 92799], 95.00th=[ 115868], | 99.00th=[ 168821], 99.50th=[ 202376], 99.90th=[ 274727], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 7, max= 149, per=25.38%, avg=45.93, stdev=22.09, samples=269 iops : min= 1, max= 37, avg=10.83, stdev= 5.57, samples=269 lat (usec) : 50=0.07%, 100=0.88%, 250=0.29%, 500=0.03%, 1000=0.03% lat (msec) : 2=4.59%, 4=4.20%, 10=7.98%, 20=8.79%, 50=37.86% lat (msec) : 100=28.29%, 250=6.90%, 500=0.07%, 2000=0.03% cpu : usr=0.09%, sys=5.14%, ctx=6840, 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=179635: Fri Aug 14 19:47:49 2026 read: IOPS=10, BW=43.6KiB/s (44.7kB/s)(6028KiB/138103msec) clat (usec): min=31, max=279514, avg=48755.73, stdev=30820.32 lat (usec): min=31, max=279515, avg=48766.56, stdev=30822.46 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 9372], 10.00th=[ 17957], 20.00th=[ 25035], | 30.00th=[ 31065], 40.00th=[ 36963], 50.00th=[ 43779], 60.00th=[ 50070], | 70.00th=[ 58459], 80.00th=[ 68682], 90.00th=[ 86508], 95.00th=[104334], | 99.00th=[147850], 99.50th=[177210], 99.90th=[244319], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 125, per=25.18%, avg=43.56, stdev=18.37, samples=268 iops : min= 1, max= 31, avg=10.22, stdev= 4.63, samples=268 write: IOPS=11, BW=45.3KiB/s (46.4kB/s)(6260KiB/138103msec); 0 zone resets clat (usec): min=1047, max=1083.6k, avg=40850.11, stdev=47758.34 lat (usec): min=1048, max=1083.6k, avg=40855.16, stdev=47756.10 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1565], 10.00th=[ 2278], | 20.00th=[ 4883], 30.00th=[ 10290], 40.00th=[ 20579], | 50.00th=[ 30016], 60.00th=[ 38011], 70.00th=[ 52167], | 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[ 121111], | 99.00th=[ 166724], 99.50th=[ 196084], 99.90th=[ 316670], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 110, per=24.89%, avg=45.05, stdev=20.55, samples=269 iops : min= 1, max= 27, avg=10.59, stdev= 5.18, samples=269 lat (usec) : 50=0.20%, 100=1.63%, 250=0.23%, 500=0.10%, 1000=0.03% lat (msec) : 2=4.36%, 4=4.49%, 10=6.58%, 20=8.40%, 50=38.48% lat (msec) : 100=28.13%, 250=7.29%, 500=0.07%, 2000=0.03% cpu : usr=0.08%, sys=4.97%, ctx=6841, 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=179638: Fri Aug 14 19:47:49 2026 read: IOPS=10, BW=43.8KiB/s (44.8kB/s)(6052KiB/138230msec) clat (usec): min=48, max=1036.5k, avg=51312.42, stdev=42143.14 lat (usec): min=50, max=1036.5k, avg=51314.76, stdev=42143.46 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 12780], 10.00th=[ 19530], | 20.00th=[ 25822], 30.00th=[ 31327], 40.00th=[ 37487], | 50.00th=[ 44303], 60.00th=[ 52691], 70.00th=[ 60031], | 80.00th=[ 69731], 90.00th=[ 89654], 95.00th=[ 107480], | 99.00th=[ 185598], 99.50th=[ 221250], 99.90th=[ 295699], | 99.95th=[1035994], 99.99th=[1035994] bw ( KiB/s): min= 7, max= 110, per=25.33%, avg=43.83, stdev=18.04, samples=269 iops : min= 1, max= 27, avg=10.29, stdev= 4.54, samples=269 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(6236KiB/138230msec); 0 zone resets clat (usec): min=1049, max=228626, avg=38434.09, stdev=38182.06 lat (usec): min=1050, max=228629, avg=38439.90, stdev=38181.53 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1516], 10.00th=[ 2180], 20.00th=[ 5014], | 30.00th=[ 9372], 40.00th=[ 18220], 50.00th=[ 27919], 60.00th=[ 37487], | 70.00th=[ 49546], 80.00th=[ 67634], 90.00th=[ 91751], 95.00th=[114820], | 99.00th=[160433], 99.50th=[183501], 99.90th=[217056], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 7, max= 125, per=24.95%, avg=45.16, stdev=19.93, samples=269 iops : min= 1, max= 31, avg=10.62, stdev= 5.03, samples=269 lat (usec) : 50=0.03%, 100=1.53%, 250=0.16%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=4.69%, 4=3.81%, 10=7.71%, 20=8.17%, 50=37.43% lat (msec) : 100=29.17%, 250=7.03%, 500=0.07%, 2000=0.03% cpu : usr=0.08%, sys=4.82%, ctx=6803, 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=174KiB/s (178kB/s), 43.4KiB/s-43.9KiB/s (44.5kB/s-44.9kB/s), io=23.4MiB (24.6MB), run=136635-138230msec WRITE: bw=182KiB/s (186kB/s), 45.1KiB/s-46.4KiB/s (46.2kB/s-47.5kB/s), io=24.6MiB (25.7MB), run=136635-138230msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179631: Fri Aug 14 19:48:36 2026 read: IOPS=8, BW=32.5KiB/s (33.3kB/s)(5992KiB/184442msec) clat (msec): min=6, max=1130, avg=49.11, stdev=52.06 lat (msec): min=6, max=1130, avg=49.11, stdev=52.06 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 72], 90.00th=[ 107], 95.00th=[ 146], | 99.00th=[ 222], 99.50th=[ 245], 99.90th=[ 317], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 116, per=25.99%, avg=33.53, stdev=22.48, samples=347 iops : min= 1, max= 29, avg= 7.72, stdev= 5.67, samples=347 write: IOPS=8, BW=34.1KiB/s (34.0kB/s)(6296KiB/184442msec); 0 zone resets clat (msec): min=12, max=339, avg=70.06, stdev=46.30 lat (msec): min=12, max=339, avg=70.06, stdev=46.30 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 82], 80.00th=[ 106], 90.00th=[ 134], 95.00th=[ 161], | 99.00th=[ 228], 99.50th=[ 264], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 103, per=25.25%, avg=34.09, stdev=20.87, samples=358 iops : min= 1, max= 25, avg= 7.86, stdev= 5.27, samples=358 lat (msec) : 10=1.07%, 20=11.91%, 50=43.82%, 100=25.91%, 250=16.73% lat (msec) : 500=0.52%, 2000=0.03% cpu : usr=0.07%, sys=1.98%, ctx=4885, 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=179634: Fri Aug 14 19:48:36 2026 read: IOPS=8, BW=32.1KiB/s (32.9kB/s)(5940KiB/184917msec) clat (msec): min=4, max=1026, avg=49.36, stdev=48.72 lat (msec): min=4, max=1026, avg=49.37, stdev=48.72 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 71], 90.00th=[ 109], 95.00th=[ 138], | 99.00th=[ 205], 99.50th=[ 241], 99.90th=[ 305], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 126, per=25.61%, avg=33.04, stdev=22.03, samples=349 iops : min= 1, max= 31, avg= 7.59, stdev= 5.55, samples=349 write: IOPS=8, BW=34.3KiB/s (35.2kB/s)(6348KiB/184917msec); 0 zone resets clat (msec): min=11, max=374, avg=69.94, stdev=47.10 lat (msec): min=11, max=374, avg=69.94, stdev=47.10 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 80], 80.00th=[ 101], 90.00th=[ 134], 95.00th=[ 165], | 99.00th=[ 230], 99.50th=[ 268], 99.90th=[ 363], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 112, per=25.21%, avg=34.03, stdev=20.70, samples=362 iops : min= 1, max= 28, avg= 7.85, stdev= 5.24, samples=362 lat (msec) : 10=0.98%, 20=10.97%, 50=43.29%, 100=28.68%, 250=15.49% lat (msec) : 500=0.55%, 2000=0.03% cpu : usr=0.06%, sys=2.03%, ctx=5046, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179636: Fri Aug 14 19:48:36 2026 read: IOPS=8, BW=32.9KiB/s (33.7kB/s)(6028KiB/183294msec) clat (msec): min=5, max=290, avg=47.60, stdev=40.00 lat (msec): min=5, max=290, avg=47.61, stdev=40.00 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 70], 90.00th=[ 110], 95.00th=[ 136], | 99.00th=[ 188], 99.50th=[ 211], 99.90th=[ 239], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 125, per=25.67%, avg=33.11, stdev=21.38, samples=352 iops : min= 1, max= 31, avg= 7.61, stdev= 5.38, samples=352 write: IOPS=8, BW=34.2KiB/s (34.0kB/s)(6260KiB/183294msec); 0 zone resets clat (msec): min=11, max=1069, avg=70.89, stdev=54.24 lat (msec): min=11, max=1069, avg=70.89, stdev=54.25 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 82], 80.00th=[ 102], 90.00th=[ 136], 95.00th=[ 171], | 99.00th=[ 241], 99.50th=[ 275], 99.90th=[ 363], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 112, per=25.20%, avg=34.02, stdev=20.65, samples=356 iops : min= 1, max= 28, avg= 7.84, stdev= 5.22, samples=356 lat (msec) : 10=0.91%, 20=10.81%, 50=45.87%, 100=26.14%, 250=15.89% lat (msec) : 500=0.36%, 2000=0.03% cpu : usr=0.07%, sys=2.03%, ctx=5022, 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=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=179637: Fri Aug 14 19:48:36 2026 read: IOPS=8, BW=32.9KiB/s (33.7kB/s)(6052KiB/183932msec) clat (msec): min=6, max=333, avg=49.61, stdev=43.88 lat (msec): min=6, max=333, avg=49.62, stdev=43.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 71], 90.00th=[ 109], 95.00th=[ 150], | 99.00th=[ 211], 99.50th=[ 243], 99.90th=[ 288], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 119, per=26.41%, avg=34.07, stdev=21.97, samples=345 iops : min= 1, max= 29, avg= 7.85, stdev= 5.53, samples=345 write: IOPS=8, BW=33.9KiB/s (34.7kB/s)(6236KiB/183932msec); 0 zone resets clat (msec): min=10, max=1077, avg=69.41, stdev=53.43 lat (msec): min=10, max=1077, avg=69.42, stdev=53.43 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 64], | 70.00th=[ 79], 80.00th=[ 101], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 234], 99.50th=[ 292], 99.90th=[ 380], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 112, per=25.20%, avg=34.02, stdev=20.17, samples=356 iops : min= 1, max= 28, avg= 7.84, stdev= 5.10, samples=356 lat (msec) : 10=0.75%, 20=11.85%, 50=43.68%, 100=27.80%, 250=15.36% lat (msec) : 500=0.52%, 2000=0.03% cpu : usr=0.06%, sys=2.04%, ctx=4812, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=130KiB/s (133kB/s), 32.1KiB/s-32.9KiB/s (32.9kB/s-33.7kB/s), io=23.4MiB (24.6MB), run=183294-184917msec WRITE: bw=136KiB/s (139kB/s), 33.9KiB/s-34.3KiB/s (34.7kB/s-35.2kB/s), io=24.6MiB (25.7MB), run=183294-184917msec 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=179684: Fri Aug 14 19:49:21 2026 read: IOPS=11, BW=191KiB/s (195kB/s)(5920KiB/31053msec) clat (usec): min=36, max=217800, avg=44625.80, stdev=33068.38 lat (usec): min=36, max=217801, avg=44627.75, stdev=33068.75 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 61], 10.00th=[ 74], 20.00th=[ 22414], | 30.00th=[ 27919], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 52691], 80.00th=[ 63177], 90.00th=[ 85459], 95.00th=[101188], | 99.00th=[158335], 99.50th=[196084], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 31, max= 447, per=25.22%, avg=190.66, stdev=87.62, samples=61 iops : min= 1, max= 27, avg=11.11, stdev= 5.47, samples=61 write: IOPS=12, BW=205KiB/s (210kB/s)(6368KiB/31053msec); 0 zone resets clat (usec): min=1326, max=164383, avg=36345.71, stdev=35095.75 lat (usec): min=1327, max=164385, avg=36348.58, stdev=35096.90 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2540], 10.00th=[ 3687], 20.00th=[ 6849], | 30.00th=[ 10159], 40.00th=[ 17957], 50.00th=[ 25035], 60.00th=[ 33817], | 70.00th=[ 44827], 80.00th=[ 61604], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[156238], 99.50th=[162530], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 26, max= 414, per=25.82%, avg=205.49, stdev=92.46, samples=61 iops : min= 1, max= 25, avg=12.05, stdev= 5.79, samples=61 lat (usec) : 50=0.65%, 100=4.95%, 250=0.52% lat (msec) : 2=1.69%, 4=3.91%, 10=9.77%, 20=9.38%, 50=38.54% lat (msec) : 100=24.48%, 250=6.12% cpu : usr=0.06%, sys=5.70%, ctx=1641, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179685: Fri Aug 14 19:49:21 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(5744KiB/31597msec) clat (usec): min=44, max=197379, avg=47454.09, stdev=32726.58 lat (usec): min=45, max=197381, avg=47461.76, stdev=32723.30 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 734], 20.00th=[ 24511], | 30.00th=[ 28967], 40.00th=[ 35914], 50.00th=[ 41681], 60.00th=[ 48497], | 70.00th=[ 57934], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[110625], | 99.00th=[145753], 99.50th=[191890], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 383, per=24.39%, avg=184.36, stdev=77.37, samples=61 iops : min= 1, max= 23, avg=10.72, stdev= 4.81, samples=61 write: IOPS=12, BW=207KiB/s (212kB/s)(6544KiB/31597msec); 0 zone resets clat (usec): min=1141, max=425947, avg=35460.52, stdev=37804.06 lat (usec): min=1142, max=425950, avg=35480.63, stdev=37834.95 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 2180], 10.00th=[ 3261], 20.00th=[ 5669], | 30.00th=[ 10290], 40.00th=[ 18744], 50.00th=[ 26084], 60.00th=[ 34341], | 70.00th=[ 45351], 80.00th=[ 57934], 90.00th=[ 80217], 95.00th=[106431], | 99.00th=[137364], 99.50th=[147850], 99.90th=[425722], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 62, max= 507, per=25.98%, avg=206.81, stdev=102.00, samples=62 iops : min= 3, max= 31, avg=12.15, stdev= 6.41, samples=62 lat (usec) : 50=0.26%, 100=4.04%, 250=0.13%, 500=0.13%, 750=0.13% lat (msec) : 2=2.34%, 4=4.69%, 10=8.72%, 20=8.46%, 50=39.84% lat (msec) : 100=25.13%, 250=5.99%, 500=0.13% cpu : usr=0.06%, sys=5.63%, ctx=1719, 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=179686: Fri Aug 14 19:49:21 2026 read: IOPS=12, BW=198KiB/s (202kB/s)(6256KiB/31647msec) clat (usec): min=42, max=331536, avg=45138.52, stdev=34397.39 lat (usec): min=42, max=331537, avg=45139.64, stdev=34397.41 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 70], 10.00th=[ 840], 20.00th=[ 21627], | 30.00th=[ 27132], 40.00th=[ 32113], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 55313], 80.00th=[ 63701], 90.00th=[ 85459], 95.00th=[100140], | 99.00th=[158335], 99.50th=[208667], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 32, max= 573, per=25.92%, avg=195.94, stdev=91.93, samples=62 iops : min= 2, max= 35, avg=11.45, stdev= 5.72, samples=62 write: IOPS=11, BW=191KiB/s (195kB/s)(6032KiB/31647msec); 0 zone resets clat (usec): min=1421, max=220136, avg=37000.46, stdev=35204.36 lat (usec): min=1422, max=220138, avg=37008.37, stdev=35200.59 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2024], 10.00th=[ 2835], 20.00th=[ 4883], | 30.00th=[ 9372], 40.00th=[ 20317], 50.00th=[ 29492], 60.00th=[ 39060], | 70.00th=[ 50070], 80.00th=[ 62129], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[152044], 99.50th=[175113], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 444, per=23.42%, avg=186.39, stdev=88.45, samples=62 iops : min= 1, max= 27, avg=10.85, stdev= 5.53, samples=62 lat (usec) : 50=0.26%, 100=4.30%, 250=0.26%, 750=0.26%, 1000=0.13% lat (msec) : 2=2.34%, 4=5.08%, 10=8.33%, 20=6.64%, 50=39.84% lat (msec) : 100=27.21%, 250=5.21%, 500=0.13% cpu : usr=0.05%, sys=5.38%, ctx=1671, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179687: Fri Aug 14 19:49:21 2026 read: IOPS=12, BW=198KiB/s (202kB/s)(6032KiB/30511msec) clat (usec): min=38, max=214893, avg=44786.56, stdev=32623.83 lat (usec): min=39, max=214895, avg=44787.75, stdev=32623.95 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 81], 20.00th=[ 20579], | 30.00th=[ 26346], 40.00th=[ 32637], 50.00th=[ 41157], 60.00th=[ 47449], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[105382], | 99.00th=[139461], 99.50th=[173016], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 502, per=26.38%, avg=199.44, stdev=93.00, samples=59 iops : min= 1, max= 31, avg=11.68, stdev= 5.84, samples=59 write: IOPS=12, BW=205KiB/s (210kB/s)(6256KiB/30511msec); 0 zone resets clat (usec): min=1364, max=271402, avg=34717.93, stdev=35855.83 lat (usec): min=1366, max=271404, avg=34723.88, stdev=35854.92 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2180], 10.00th=[ 3097], 20.00th=[ 5342], | 30.00th=[ 9241], 40.00th=[ 18744], 50.00th=[ 25297], 60.00th=[ 31851], | 70.00th=[ 43254], 80.00th=[ 54789], 90.00th=[ 83362], 95.00th=[106431], | 99.00th=[158335], 99.50th=[198181], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 61, max= 474, per=25.72%, avg=204.77, stdev=96.74, samples=60 iops : min= 3, max= 29, avg=12.03, stdev= 6.07, samples=60 lat (usec) : 50=0.65%, 100=4.95%, 250=0.65%, 500=0.13%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=1.43%, 4=5.99%, 10=8.59%, 20=7.81%, 50=39.06% lat (msec) : 100=24.22%, 250=5.99%, 500=0.13% cpu : usr=0.08%, sys=5.30%, ctx=1647, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=757KiB/s (775kB/s), 182KiB/s-198KiB/s (186kB/s-202kB/s), io=23.4MiB (24.5MB), run=30511-31647msec WRITE: bw=796KiB/s (815kB/s), 191KiB/s-207KiB/s (195kB/s-212kB/s), io=24.6MiB (25.8MB), run=30511-31647msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179678: Fri Aug 14 19:49:34 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5920KiB/45565msec) clat (msec): min=9, max=260, avg=49.15, stdev=40.78 lat (msec): min=9, max=260, avg=49.16, stdev=40.79 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 49], 80.00th=[ 68], 90.00th=[ 108], 95.00th=[ 138], | 99.00th=[ 222], 99.50th=[ 245], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 381, per=24.96%, avg=130.80, stdev=79.88, samples=87 iops : min= 1, max= 23, avg= 7.37, stdev= 5.05, samples=87 write: IOPS=8, BW=140KiB/s (143kB/s)(6368KiB/45565msec); 0 zone resets clat (msec): min=13, max=323, avg=68.35, stdev=45.94 lat (msec): min=13, max=323, avg=68.35, stdev=45.94 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 66], | 70.00th=[ 80], 80.00th=[ 94], 90.00th=[ 118], 95.00th=[ 155], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 413, per=25.45%, avg=140.24, stdev=75.69, samples=88 iops : min= 1, max= 25, avg= 7.97, stdev= 4.79, samples=88 lat (msec) : 10=0.52%, 20=8.20%, 50=48.31%, 100=29.30%, 250=12.89% lat (msec) : 500=0.78% cpu : usr=0.06%, sys=2.00%, ctx=1190, 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=179679: Fri Aug 14 19:49:34 2026 read: IOPS=7, BW=126KiB/s (129kB/s)(5744KiB/45427msec) clat (msec): min=6, max=258, avg=46.73, stdev=37.61 lat (msec): min=6, max=258, avg=46.73, stdev=37.61 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 51], 80.00th=[ 63], 90.00th=[ 97], 95.00th=[ 125], | 99.00th=[ 184], 99.50th=[ 232], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 413, per=25.10%, avg=131.51, stdev=83.32, samples=85 iops : min= 1, max= 25, avg= 7.42, stdev= 5.23, samples=85 write: IOPS=9, BW=144KiB/s (148kB/s)(6544KiB/45427msec); 0 zone resets clat (msec): min=15, max=450, avg=69.59, stdev=44.02 lat (msec): min=15, max=450, avg=69.59, stdev=44.02 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 38], | 30.00th=[ 43], 40.00th=[ 50], 50.00th=[ 56], 60.00th=[ 68], | 70.00th=[ 81], 80.00th=[ 97], 90.00th=[ 126], 95.00th=[ 157], | 99.00th=[ 205], 99.50th=[ 218], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 30, max= 349, per=26.02%, avg=143.35, stdev=72.74, samples=89 iops : min= 1, max= 21, avg= 8.16, stdev= 4.62, samples=89 lat (msec) : 10=0.39%, 20=8.98%, 50=45.57%, 100=30.86%, 250=13.93% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=2.04%, ctx=1238, 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=179680: Fri Aug 14 19:49:34 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(6256KiB/45410msec) clat (msec): min=5, max=313, avg=50.36, stdev=46.70 lat (msec): min=5, max=313, avg=50.36, stdev=46.70 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 41], | 70.00th=[ 54], 80.00th=[ 72], 90.00th=[ 110], 95.00th=[ 138], | 99.00th=[ 271], 99.50th=[ 275], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 604, per=26.28%, avg=137.70, stdev=93.84, samples=89 iops : min= 1, max= 37, avg= 7.81, stdev= 5.92, samples=89 write: IOPS=8, BW=133KiB/s (136kB/s)(6032KiB/45410msec); 0 zone resets clat (msec): min=16, max=316, avg=68.03, stdev=45.78 lat (msec): min=16, max=316, avg=68.03, stdev=45.78 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 47], 50.00th=[ 54], 60.00th=[ 62], | 70.00th=[ 74], 80.00th=[ 90], 90.00th=[ 125], 95.00th=[ 159], | 99.00th=[ 266], 99.50th=[ 313], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 288, per=23.91%, avg=131.76, stdev=70.44, samples=89 iops : min= 1, max= 18, avg= 7.43, stdev= 4.47, samples=89 lat (msec) : 10=0.91%, 20=10.81%, 50=44.79%, 100=29.69%, 250=12.76% lat (msec) : 500=1.04% cpu : usr=0.08%, sys=1.93%, ctx=1189, 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=179681: Fri Aug 14 19:49:34 2026 read: IOPS=8, BW=132KiB/s (135kB/s)(6032KiB/45671msec) clat (msec): min=6, max=234, avg=46.44, stdev=35.75 lat (msec): min=6, max=234, avg=46.44, stdev=35.75 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 67], 90.00th=[ 90], 95.00th=[ 116], | 99.00th=[ 178], 99.50th=[ 230], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 319, per=25.77%, avg=135.05, stdev=77.34, samples=86 iops : min= 1, max= 19, avg= 7.64, stdev= 4.91, samples=86 write: IOPS=8, BW=137KiB/s (140kB/s)(6256KiB/45671msec); 0 zone resets clat (msec): min=16, max=470, avg=71.59, stdev=49.68 lat (msec): min=16, max=470, avg=71.60, stdev=49.68 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 50], 50.00th=[ 57], 60.00th=[ 66], | 70.00th=[ 80], 80.00th=[ 96], 90.00th=[ 136], 95.00th=[ 169], | 99.00th=[ 239], 99.50th=[ 321], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 31, max= 445, per=24.50%, avg=135.02, stdev=74.75, samples=89 iops : min= 1, max= 27, avg= 7.64, stdev= 4.72, samples=89 lat (msec) : 10=0.65%, 20=8.33%, 50=45.96%, 100=31.90%, 250=12.76% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.99%, ctx=1230, 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=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=524KiB/s (537kB/s), 126KiB/s-138KiB/s (129kB/s-141kB/s), io=23.4MiB (24.5MB), run=45410-45671msec WRITE: bw=552KiB/s (565kB/s), 133KiB/s-144KiB/s (136kB/s-148kB/s), io=24.6MiB (25.8MB), run=45410-45671msec 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=179700: Fri Aug 14 19:49:53 2026 read: IOPS=1, BW=1513KiB/s (1549kB/s)(7168KiB/4739msec) clat (msec): min=161, max=1614, avg=432.55, stdev=525.04 lat (msec): min=161, max=1614, avg=432.55, stdev=525.04 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 178], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 230], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 338], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 1771, max= 4079, per=78.53%, avg=2392.00, stdev=950.08, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1080KiB/s (1106kB/s)(5120KiB/4739msec); 0 zone resets clat (msec): min=233, max=394, avg=329.83, stdev=71.06 lat (msec): min=233, max=394, avg=329.94, stdev=71.06 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2015, max= 4087, per=59.60%, avg=2542.00, stdev=1030.05, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=41.67%, 500=50.00%, 2000=8.33% cpu : usr=0.02%, sys=12.09%, ctx=273, 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=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=179701: Fri Aug 14 19:49:53 2026 read: IOPS=0, BW=305KiB/s (312kB/s)(2048KiB/6722msec) clat (msec): min=139, max=275, avg=207.07, stdev=96.18 lat (msec): min=139, max=275, avg=207.07, stdev=96.18 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 1735, max= 2000, per=61.31%, avg=1867.50, stdev=187.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1523KiB/s (1560kB/s)(10.0MiB/6722msec); 0 zone resets clat (msec): min=138, max=2922, avg=617.70, stdev=844.87 lat (msec): min=139, max=2922, avg=617.81, stdev=844.87 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 159], | 30.00th=[ 218], 40.00th=[ 230], 50.00th=[ 309], 60.00th=[ 347], | 70.00th=[ 363], 80.00th=[ 527], 90.00th=[ 961], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 2003, max= 4063, per=85.30%, avg=3638.20, stdev=914.19, samples=5 iops : min= 1, max= 3, avg= 2.60, stdev= 0.89, samples=5 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=9.70%, ctx=141, 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=179702: Fri Aug 14 19:49:53 2026 read: IOPS=1, BW=1071KiB/s (1096kB/s)(6144KiB/5738msec) clat (usec): min=533, max=430512, avg=169763.63, stdev=160503.03 lat (usec): min=534, max=430513, avg=169765.04, stdev=160502.67 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 865], | 30.00th=[ 865], 40.00th=[162530], 50.00th=[162530], 60.00th=[204473], | 70.00th=[219153], 80.00th=[219153], 90.00th=[429917], 95.00th=[429917], | 99.00th=[429917], 99.50th=[429917], 99.90th=[429917], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 2000, max= 4007, per=82.61%, avg=2516.25, stdev=993.99, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1071KiB/s (1096kB/s)(6144KiB/5738msec); 0 zone resets clat (msec): min=243, max=2001, avg=773.94, stdev=642.43 lat (msec): min=243, max=2002, avg=774.03, stdev=642.45 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 735], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 2003, max= 4000, per=56.59%, avg=2413.60, stdev=886.90, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=33.33%, 500=16.67%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=10.51%, ctx=153, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179703: Fri Aug 14 19:49:53 2026 read: IOPS=1, BW=1031KiB/s (1056kB/s)(5120KiB/4964msec) clat (usec): min=1098, max=300811, avg=193749.11, stdev=115687.95 lat (usec): min=1100, max=300813, avg=193750.81, stdev=115688.13 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1106], 10.00th=[ 1106], 20.00th=[ 1106], | 30.00th=[185598], 40.00th=[185598], 50.00th=[225444], 60.00th=[225444], | 70.00th=[256902], 80.00th=[256902], 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= 2015, max= 6131, per=100.00%, avg=4073.00, stdev=2910.45, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1444KiB/s (1479kB/s)(7168KiB/4964msec); 0 zone resets clat (msec): min=101, max=1777, avg=559.39, stdev=570.62 lat (msec): min=101, max=1777, avg=559.47, stdev=570.64 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 230], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 338], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 693], 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= 2015, max= 4079, per=71.42%, avg=3046.00, stdev=1179.02, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 2=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=11.89%, ctx=143, 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=3047KiB/s (3120kB/s), 305KiB/s-1513KiB/s (312kB/s-1549kB/s), io=20.0MiB (20.0MB), run=4739-6722msec WRITE: bw=4265KiB/s (4368kB/s), 1071KiB/s-1523KiB/s (1096kB/s-1560kB/s), io=28.0MiB (29.4MB), run=4739-6722msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179705: Fri Aug 14 19:49:54 2026 read: IOPS=1, BW=1236KiB/s (1265kB/s)(7168KiB/5801msec) clat (msec): min=88, max=2056, avg=523.97, stdev=695.37 lat (msec): min=88, max=2056, avg=523.97, stdev=695.37 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 106], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 224], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 510], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 1494, max= 4079, per=97.64%, avg=2907.75, stdev=1346.62, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=883KiB/s (904kB/s)(5120KiB/5801msec); 0 zone resets clat (msec): min=130, max=741, avg=425.68, stdev=244.50 lat (msec): min=130, max=741, avg=425.77, stdev=244.50 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1896, max= 4000, per=59.57%, avg=2483.50, stdev=1012.66, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, >=2000=8.33% cpu : usr=0.02%, sys=2.76%, ctx=83, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179706: Fri Aug 14 19:49:54 2026 read: IOPS=0, BW=298KiB/s (305kB/s)(2048KiB/6877msec) clat (msec): min=232, max=810, avg=521.94, stdev=408.76 lat (msec): min=232, max=810, avg=521.95, stdev=408.76 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 2019, max= 2039, per=68.13%, avg=2029.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1489KiB/s (1525kB/s)(10.0MiB/6877msec); 0 zone resets clat (msec): min=152, max=3155, avg=579.92, stdev=907.54 lat (msec): min=152, max=3155, avg=580.13, stdev=907.50 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 259], | 30.00th=[ 264], 40.00th=[ 275], 50.00th=[ 292], 60.00th=[ 313], | 70.00th=[ 330], 80.00th=[ 347], 90.00th=[ 414], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 2000, max= 4071, per=72.55%, avg=3024.67, stdev=1094.57, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=16.67%, 500=66.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.56%, ctx=93, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179707: Fri Aug 14 19:49:54 2026 read: IOPS=0, BW=999KiB/s (1023kB/s)(6144KiB/6149msec) clat (msec): min=124, max=438, avg=188.58, stdev=123.38 lat (msec): min=124, max=438, avg=188.58, stdev=123.38 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 129], | 30.00th=[ 129], 40.00th=[ 131], 50.00th=[ 131], 60.00th=[ 153], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 439], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 3792, max= 6059, per=100.00%, avg=4925.50, stdev=1603.01, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=0, BW=999KiB/s (1023kB/s)(6144KiB/6149msec); 0 zone resets clat (msec): min=114, max=2830, avg=825.09, stdev=1024.56 lat (msec): min=116, max=2830, avg=825.57, stdev=1024.27 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 422], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 2000, max= 2039, per=48.53%, avg=2023.20, stdev=16.38, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=50.00%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=3.43%, ctx=124, 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=179708: Fri Aug 14 19:49:54 2026 read: IOPS=0, BW=757KiB/s (775kB/s)(5120KiB/6762msec) clat (msec): min=101, max=663, avg=370.52, stdev=248.23 lat (msec): min=101, max=663, avg=370.52, stdev=248.23 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1896, max= 2035, per=66.74%, avg=1987.50, stdev=62.66, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1060KiB/s (1085kB/s)(7168KiB/6762msec); 0 zone resets clat (msec): min=150, max=1784, avg=700.39, stdev=542.69 lat (msec): min=150, max=1784, avg=700.53, stdev=542.71 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 226], | 30.00th=[ 477], 40.00th=[ 477], 50.00th=[ 701], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 810], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 2019, max= 6047, per=67.94%, avg=2832.60, stdev=1796.93, samples=5 iops : min= 1, max= 5, avg= 1.80, stdev= 1.79, samples=5 lat (msec) : 250=33.33%, 500=25.00%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.04%, sys=3.17%, ctx=111, 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=2978KiB/s (3050kB/s), 298KiB/s-1236KiB/s (305kB/s-1265kB/s), io=20.0MiB (20.0MB), run=5801-6877msec WRITE: bw=4169KiB/s (4269kB/s), 883KiB/s-1489KiB/s (904kB/s-1525kB/s), io=28.0MiB (29.4MB), run=5801-6877msec 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=179716: Fri Aug 14 19:50:09 2026 read: IOPS=1, BW=4853KiB/s (4970kB/s)(12.0MiB/2532msec) clat (msec): min=668, max=995, avg=817.24, stdev=165.08 lat (msec): min=668, max=995, avg=817.25, stdev=165.08 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 8126, max= 8143, per=100.00%, avg=8134.50, stdev=12.02, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=11.58%, ctx=238, 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=179717: Fri Aug 14 19:50:09 2026 read: IOPS=0, BW=1047KiB/s (1072kB/s)(4096KiB/3911msec) clat (nsec): min=834920k, max=834920k, avg=834919694.00, stdev= 0.00 lat (nsec): min=834923k, max=834923k, avg=834923372.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2095KiB/s (2145kB/s)(8192KiB/3911msec); 0 zone resets clat (msec): min=524, max=2507, avg=1516.05, stdev=1401.65 lat (msec): min=525, max=2507, avg=1516.62, stdev=1401.59 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 2500], | 70.00th=[ 2500], 80.00th=[ 2500], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 8143, max= 8143, per=97.20%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.73%, ctx=219, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179718: Fri Aug 14 19:50:09 2026 write: IOPS=0, BW=4043KiB/s (4140kB/s)(12.0MiB/3039msec); 0 zone resets clat (msec): min=642, max=1347, avg=976.92, stdev=353.93 lat (msec): min=643, max=1348, avg=977.38, stdev=354.02 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7831, max= 8143, per=95.33%, avg=7987.00, stdev=220.62, 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=3.92%, ctx=67, 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=179720: Fri Aug 14 19:50:09 2026 write: IOPS=1, BW=4239KiB/s (4340kB/s)(12.0MiB/2899msec); 0 zone resets clat (msec): min=800, max=964, avg=905.09, stdev=90.74 lat (msec): min=808, max=965, avg=908.00, stdev=86.77 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7922, max= 8175, per=96.07%, avg=8048.50, stdev=178.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=4.04%, ctx=76, 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 Run status group 0 (all jobs): READ: bw=4189KiB/s (4290kB/s), 1047KiB/s-4853KiB/s (1072kB/s-4970kB/s), io=16.0MiB (16.8MB), run=2532-3911msec WRITE: bw=8378KiB/s (8580kB/s), 2095KiB/s-4239KiB/s (2145kB/s-4340kB/s), io=32.0MiB (33.6MB), run=2899-3911msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179719: Fri Aug 14 19:50:09 2026 read: IOPS=0, BW=3236KiB/s (3314kB/s)(12.0MiB/3797msec) clat (msec): min=625, max=1908, avg=1224.64, stdev=646.14 lat (msec): min=625, max=1908, avg=1224.64, stdev=646.14 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 7953, max= 8143, per=100.00%, avg=8048.00, stdev=134.35, 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=2.11%, ctx=50, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179721: Fri Aug 14 19:50:09 2026 read: IOPS=0, BW=1140KiB/s (1168kB/s)(4096KiB/3592msec) clat (nsec): min=874581k, max=874581k, avg=874580962.00, stdev= 0.00 lat (nsec): min=874583k, max=874583k, avg=874583134.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2281KiB/s (2335kB/s)(8192KiB/3592msec); 0 zone resets clat (msec): min=760, max=1904, avg=1332.36, stdev=808.91 lat (msec): min=763, max=1904, avg=1334.40, stdev=806.75 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 1905], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 8126, max= 8126, per=89.08%, avg=8126.00, 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=0.11%, sys=2.67%, ctx=41, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179722: Fri Aug 14 19:50:09 2026 write: IOPS=0, BW=3505KiB/s (3589kB/s)(12.0MiB/3506msec); 0 zone resets clat (msec): min=537, max=1608, avg=1137.76, stdev=547.16 lat (msec): min=537, max=1608, avg=1138.23, stdev=547.23 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7953, max= 8143, per=88.23%, avg=8048.00, stdev=134.35, 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=2.48%, ctx=44, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179723: Fri Aug 14 19:50:09 2026 write: IOPS=0, BW=4051KiB/s (4149kB/s)(12.0MiB/3033msec); 0 zone resets clat (msec): min=394, max=1344, avg=957.50, stdev=499.01 lat (msec): min=394, max=1345, avg=959.15, stdev=499.65 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7968, max= 8175, per=88.48%, avg=8071.50, stdev=146.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.07%, sys=3.36%, ctx=52, 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=4315KiB/s (4419kB/s), 1140KiB/s-3236KiB/s (1168kB/s-3314kB/s), io=16.0MiB (16.8MB), run=3592-3797msec WRITE: bw=9122KiB/s (9341kB/s), 2281KiB/s-4051KiB/s (2335kB/s-4149kB/s), io=32.0MiB (33.6MB), run=3033-3592msec