== sanity test 398b: DIO and buffer IO race ============== 15:34:37 (1764794077) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.01742 s, 16.7 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=151314: Wed Dec 3 15:35:59 2025 read: IOPS=20, BW=82.4KiB/s (84.4kB/s)(5992KiB/72700msec) clat (usec): min=78, max=698563, avg=23833.51, stdev=26146.88 lat (usec): min=78, max=698564, avg=23836.76, stdev=26147.13 clat percentiles (usec): | 1.00th=[ 128], 5.00th=[ 200], 10.00th=[ 5866], 20.00th=[ 10159], | 30.00th=[ 12518], 40.00th=[ 15664], 50.00th=[ 18744], 60.00th=[ 22938], | 70.00th=[ 27919], 80.00th=[ 34341], 90.00th=[ 45351], 95.00th=[ 57410], | 99.00th=[ 92799], 99.50th=[124257], 99.90th=[227541], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 8, max= 184, per=25.11%, avg=82.87, stdev=37.45, samples=143 iops : min= 2, max= 46, avg=20.20, stdev= 9.44, samples=143 write: IOPS=21, BW=86.6KiB/s (88.7kB/s)(6296KiB/72700msec); 0 zone resets clat (usec): min=646, max=387435, avg=23458.24, stdev=27094.47 lat (usec): min=647, max=387437, avg=23460.69, stdev=27093.83 clat percentiles (usec): | 1.00th=[ 947], 5.00th=[ 1074], 10.00th=[ 1336], 20.00th=[ 2868], | 30.00th=[ 5735], 40.00th=[ 11600], 50.00th=[ 16450], 60.00th=[ 22152], | 70.00th=[ 28705], 80.00th=[ 38011], 90.00th=[ 51643], 95.00th=[ 69731], | 99.00th=[123208], 99.50th=[156238], 99.90th=[246416], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 16, max= 215, per=25.20%, avg=86.92, stdev=40.78, samples=143 iops : min= 4, max= 53, avg=21.22, stdev=10.23, samples=143 lat (usec) : 100=0.03%, 250=2.77%, 500=1.33%, 750=0.26%, 1000=1.20% lat (msec) : 2=5.96%, 4=6.15%, 10=10.19%, 20=26.50%, 50=36.30% lat (msec) : 100=7.94%, 250=1.30%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=12.40%, ctx=7307, 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=151315: Wed Dec 3 15:35:59 2025 read: IOPS=21, BW=84.5KiB/s (86.6kB/s)(5940KiB/70261msec) clat (usec): min=103, max=701875, avg=22771.38, stdev=25658.82 lat (usec): min=104, max=701876, avg=22772.43, stdev=25658.84 clat percentiles (usec): | 1.00th=[ 130], 5.00th=[ 260], 10.00th=[ 1336], 20.00th=[ 9765], | 30.00th=[ 11994], 40.00th=[ 14746], 50.00th=[ 17957], 60.00th=[ 22152], | 70.00th=[ 26870], 80.00th=[ 32375], 90.00th=[ 43779], 95.00th=[ 55837], | 99.00th=[ 91751], 99.50th=[122160], 99.90th=[181404], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 23, max= 207, per=25.74%, avg=84.93, stdev=36.79, samples=138 iops : min= 5, max= 51, avg=20.74, stdev= 9.27, samples=138 write: IOPS=22, BW=90.3KiB/s (92.5kB/s)(6348KiB/70261msec); 0 zone resets clat (usec): min=852, max=215022, avg=22906.22, stdev=24242.95 lat (usec): min=853, max=215023, avg=22909.67, stdev=24245.21 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1090], 10.00th=[ 1369], 20.00th=[ 3130], | 30.00th=[ 6325], 40.00th=[ 11469], 50.00th=[ 16450], 60.00th=[ 21365], | 70.00th=[ 28443], 80.00th=[ 36439], 90.00th=[ 55313], 95.00th=[ 70779], | 99.00th=[113771], 99.50th=[133694], 99.90th=[162530], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 15, max= 239, per=26.31%, avg=90.78, stdev=41.94, samples=138 iops : min= 3, max= 59, avg=22.20, stdev=10.54, samples=138 lat (usec) : 250=2.25%, 500=2.02%, 750=0.42%, 1000=0.88% lat (msec) : 2=5.86%, 4=6.38%, 10=11.30%, 20=26.92%, 50=34.38% lat (msec) : 100=8.56%, 250=1.01%, 750=0.03% cpu : usr=0.12%, sys=12.90%, ctx=7155, 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=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=151316: Wed Dec 3 15:35:59 2025 read: IOPS=20, BW=83.2KiB/s (85.1kB/s)(6028KiB/72494msec) clat (usec): min=96, max=195528, avg=22122.49, stdev=17905.35 lat (usec): min=96, max=195529, avg=22127.94, stdev=17903.94 clat percentiles (usec): | 1.00th=[ 130], 5.00th=[ 200], 10.00th=[ 725], 20.00th=[ 9765], | 30.00th=[ 12387], 40.00th=[ 15270], 50.00th=[ 18482], 60.00th=[ 21890], | 70.00th=[ 26084], 80.00th=[ 32113], 90.00th=[ 42206], 95.00th=[ 55837], | 99.00th=[ 86508], 99.50th=[104334], 99.90th=[129500], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 7, max= 198, per=25.23%, avg=83.25, stdev=38.98, samples=142 iops : min= 1, max= 49, avg=20.31, stdev= 9.82, samples=142 write: IOPS=21, BW=86.4KiB/s (88.4kB/s)(6260KiB/72494msec); 0 zone resets clat (usec): min=759, max=720892, avg=24974.23, stdev=31481.01 lat (usec): min=760, max=720894, avg=24975.62, stdev=31480.98 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1106], 10.00th=[ 1582], 20.00th=[ 3130], | 30.00th=[ 6915], 40.00th=[ 12649], 50.00th=[ 18220], 60.00th=[ 24249], | 70.00th=[ 31589], 80.00th=[ 40109], 90.00th=[ 57410], 95.00th=[ 71828], | 99.00th=[112722], 99.50th=[139461], 99.90th=[362808], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 15, max= 191, per=25.06%, avg=86.44, stdev=35.59, samples=142 iops : min= 3, max= 47, avg=21.11, stdev= 8.94, samples=142 lat (usec) : 100=0.03%, 250=2.83%, 500=1.50%, 750=0.55%, 1000=0.91% lat (msec) : 2=5.50%, 4=5.76%, 10=10.94%, 20=25.78%, 50=36.46% lat (msec) : 100=8.63%, 250=1.04%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=12.58%, ctx=7066, 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=151317: Wed Dec 3 15:35:59 2025 read: IOPS=20, BW=83.8KiB/s (85.8kB/s)(6052KiB/72189msec) clat (usec): min=109, max=190945, avg=22781.17, stdev=18770.01 lat (usec): min=110, max=190946, avg=22782.92, stdev=18770.65 clat percentiles (usec): | 1.00th=[ 135], 5.00th=[ 196], 10.00th=[ 676], 20.00th=[ 10028], | 30.00th=[ 12518], 40.00th=[ 15533], 50.00th=[ 19268], 60.00th=[ 23200], | 70.00th=[ 27657], 80.00th=[ 33817], 90.00th=[ 43254], 95.00th=[ 53216], | 99.00th=[ 81265], 99.50th=[123208], 99.90th=[187696], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 8, max= 182, per=25.36%, avg=83.67, stdev=36.20, samples=141 iops : min= 2, max= 45, avg=20.41, stdev= 9.13, samples=141 write: IOPS=21, BW=86.4KiB/s (88.5kB/s)(6236KiB/72189msec); 0 zone resets clat (usec): min=651, max=719350, avg=24152.71, stdev=31505.40 lat (usec): min=651, max=719351, avg=24156.08, stdev=31504.36 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 1074], 10.00th=[ 1434], 20.00th=[ 2966], | 30.00th=[ 5407], 40.00th=[ 11338], 50.00th=[ 16188], 60.00th=[ 21627], | 70.00th=[ 28705], 80.00th=[ 38536], 90.00th=[ 55837], 95.00th=[ 74974], | 99.00th=[126354], 99.50th=[139461], 99.90th=[231736], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 23, max= 215, per=25.05%, avg=86.41, stdev=38.29, samples=141 iops : min= 5, max= 53, avg=21.10, stdev= 9.66, samples=141 lat (usec) : 250=3.03%, 500=1.53%, 750=0.49%, 1000=0.98% lat (msec) : 2=6.32%, 4=5.76%, 10=11.00%, 20=25.16%, 50=36.26% lat (msec) : 100=8.04%, 250=1.40%, 750=0.03% cpu : usr=0.11%, sys=12.70%, ctx=7158, 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=330KiB/s (338kB/s), 82.4KiB/s-84.5KiB/s (84.4kB/s-86.6kB/s), io=23.4MiB (24.6MB), run=70261-72700msec WRITE: bw=346KiB/s (354kB/s), 86.4KiB/s-90.3KiB/s (88.4kB/s-92.5kB/s), io=24.6MiB (25.7MB), run=70261-72700msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151309: Wed Dec 3 15:37:04 2025 read: IOPS=10, BW=43.9KiB/s (44.0kB/s)(5992KiB/136423msec) clat (msec): min=3, max=714, avg=17.56, stdev=26.89 lat (msec): min=3, max=714, avg=17.56, stdev=26.89 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 14], 80.00th=[ 23], 90.00th=[ 40], 95.00th=[ 55], | 99.00th=[ 113], 99.50th=[ 142], 99.90th=[ 180], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 151, per=27.04%, avg=47.05, stdev=29.63, samples=251 iops : min= 1, max= 37, avg=11.24, stdev= 7.50, samples=251 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(6296KiB/136423msec); 0 zone resets clat (msec): min=22, max=386, avg=69.82, stdev=47.79 lat (msec): min=22, max=386, avg=69.82, stdev=47.79 clat percentiles (msec): | 1.00th=[ 27], 5.00th=[ 32], 10.00th=[ 35], 20.00th=[ 41], | 30.00th=[ 45], 40.00th=[ 51], 50.00th=[ 55], 60.00th=[ 62], | 70.00th=[ 70], 80.00th=[ 82], 90.00th=[ 127], 95.00th=[ 186], | 99.00th=[ 259], 99.50th=[ 309], 99.90th=[ 334], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 96, per=25.22%, avg=45.90, stdev=24.30, samples=270 iops : min= 1, max= 24, avg=10.94, stdev= 6.17, samples=270 lat (msec) : 4=0.03%, 10=25.88%, 20=11.91%, 50=28.61%, 100=25.78% lat (msec) : 250=7.13%, 500=0.62%, 750=0.03% cpu : usr=0.07%, sys=2.78%, ctx=5460, 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=151310: Wed Dec 3 15:37:04 2025 read: IOPS=10, BW=43.2KiB/s (44.2kB/s)(5940KiB/137621msec) clat (msec): min=3, max=716, avg=17.13, stdev=26.33 lat (msec): min=3, max=716, avg=17.13, stdev=26.33 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 11], | 70.00th=[ 14], 80.00th=[ 23], 90.00th=[ 40], 95.00th=[ 53], | 99.00th=[ 112], 99.50th=[ 124], 99.90th=[ 192], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 144, per=26.00%, avg=45.25, stdev=30.93, samples=258 iops : min= 1, max= 36, avg=10.79, stdev= 7.81, samples=258 write: IOPS=11, BW=46.1KiB/s (47.2kB/s)(6348KiB/137621msec); 0 zone resets clat (msec): min=16, max=429, avg=70.54, stdev=48.07 lat (msec): min=16, max=429, avg=70.54, stdev=48.07 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 31], 10.00th=[ 35], 20.00th=[ 41], | 30.00th=[ 46], 40.00th=[ 51], 50.00th=[ 57], 60.00th=[ 63], | 70.00th=[ 70], 80.00th=[ 84], 90.00th=[ 128], 95.00th=[ 182], | 99.00th=[ 253], 99.50th=[ 279], 99.90th=[ 401], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 111, per=25.13%, avg=45.73, stdev=23.75, samples=272 iops : min= 1, max= 27, avg=10.90, stdev= 6.05, samples=272 lat (msec) : 4=0.13%, 10=26.66%, 20=11.26%, 50=27.31%, 100=26.66% lat (msec) : 250=7.39%, 500=0.55%, 750=0.03% cpu : usr=0.06%, sys=2.72%, ctx=5523, 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=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=151311: Wed Dec 3 15:37:04 2025 read: IOPS=11, BW=44.0KiB/s (45.1kB/s)(6028KiB/136922msec) clat (msec): min=3, max=252, avg=17.64, stdev=21.24 lat (msec): min=3, max=252, avg=17.64, stdev=21.24 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 16], 80.00th=[ 24], 90.00th=[ 41], 95.00th=[ 56], | 99.00th=[ 101], 99.50th=[ 138], 99.90th=[ 199], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 7, max= 136, per=26.24%, avg=45.65, stdev=28.96, samples=260 iops : min= 1, max= 34, avg=10.90, stdev= 7.31, samples=260 write: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6260KiB/136922msec); 0 zone resets clat (msec): min=19, max=734, avg=70.35, stdev=49.68 lat (msec): min=19, max=734, avg=70.36, stdev=49.68 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 32], 10.00th=[ 35], 20.00th=[ 41], | 30.00th=[ 45], 40.00th=[ 50], 50.00th=[ 56], 60.00th=[ 62], | 70.00th=[ 70], 80.00th=[ 85], 90.00th=[ 131], 95.00th=[ 180], | 99.00th=[ 255], 99.50th=[ 279], 99.90th=[ 401], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 104, per=25.15%, avg=45.77, stdev=24.53, samples=269 iops : min= 1, max= 26, avg=10.91, stdev= 6.24, samples=269 lat (msec) : 4=0.03%, 10=26.14%, 20=11.10%, 50=29.23%, 100=25.55% lat (msec) : 250=7.32%, 500=0.59%, 750=0.03% cpu : usr=0.06%, sys=2.75%, ctx=5545, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151312: Wed Dec 3 15:37:04 2025 read: IOPS=11, BW=44.3KiB/s (45.4kB/s)(6052KiB/136576msec) clat (msec): min=3, max=224, avg=17.22, stdev=21.28 lat (msec): min=3, max=224, avg=17.22, stdev=21.28 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 14], 80.00th=[ 22], 90.00th=[ 37], 95.00th=[ 57], | 99.00th=[ 116], 99.50th=[ 146], 99.90th=[ 201], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 7, max= 159, per=26.49%, avg=46.09, stdev=30.40, samples=258 iops : min= 1, max= 39, avg=11.00, stdev= 7.64, samples=258 write: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6236KiB/136576msec); 0 zone resets clat (msec): min=19, max=734, avg=70.74, stdev=50.86 lat (msec): min=19, max=734, avg=70.74, stdev=50.86 clat percentiles (msec): | 1.00th=[ 27], 5.00th=[ 32], 10.00th=[ 36], 20.00th=[ 41], | 30.00th=[ 46], 40.00th=[ 51], 50.00th=[ 56], 60.00th=[ 62], | 70.00th=[ 70], 80.00th=[ 84], 90.00th=[ 125], 95.00th=[ 184], | 99.00th=[ 264], 99.50th=[ 305], 99.90th=[ 443], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 95, per=24.89%, avg=45.30, stdev=23.54, samples=270 iops : min= 1, max= 23, avg=10.79, stdev= 5.99, samples=270 lat (msec) : 4=0.03%, 10=25.94%, 20=12.70%, 50=27.47%, 100=25.91% lat (msec) : 250=7.23%, 500=0.68%, 750=0.03% cpu : usr=0.06%, sys=2.76%, ctx=5528, 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=174KiB/s (179kB/s), 43.2KiB/s-44.3KiB/s (44.2kB/s-45.4kB/s), io=23.4MiB (24.6MB), run=136423-137621msec WRITE: bw=183KiB/s (187kB/s), 45.7KiB/s-46.2KiB/s (46.8kB/s-47.3kB/s), io=24.6MiB (25.7MB), run=136423-137621msec 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=151357: Wed Dec 3 15:37:22 2025 read: IOPS=32, BW=519KiB/s (531kB/s)(5920KiB/11408msec) clat (usec): min=106, max=94245, avg=14948.90, stdev=11585.18 lat (usec): min=106, max=94245, avg=14949.90, stdev=11585.23 clat percentiles (usec): | 1.00th=[ 139], 5.00th=[ 188], 10.00th=[ 330], 20.00th=[ 1549], | 30.00th=[10814], 40.00th=[12387], 50.00th=[14484], 60.00th=[16188], | 70.00th=[18744], 80.00th=[21627], 90.00th=[27395], 95.00th=[32900], | 99.00th=[57410], 99.50th=[80217], 99.90th=[93848], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 318, max= 654, per=25.86%, avg=516.86, stdev=99.33, samples=22 iops : min= 19, max= 40, avg=31.91, stdev= 6.30, samples=22 write: IOPS=34, BW=558KiB/s (572kB/s)(6368KiB/11408msec); 0 zone resets clat (usec): min=1049, max=79318, avg=14494.03, stdev=12751.37 lat (usec): min=1051, max=79320, avg=14495.96, stdev=12751.92 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 2638], 10.00th=[ 3294], 20.00th=[ 4359], | 30.00th=[ 5342], 40.00th=[ 7504], 50.00th=[10552], 60.00th=[13566], | 70.00th=[17957], 80.00th=[23725], 90.00th=[31589], 95.00th=[38011], | 99.00th=[64750], 99.50th=[71828], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 224, max= 768, per=26.70%, avg=561.50, stdev=164.97, samples=22 iops : min= 14, max= 48, avg=34.68, stdev=10.23, samples=22 lat (usec) : 250=3.39%, 500=4.69%, 750=0.91%, 1000=0.13% lat (msec) : 2=1.69%, 4=7.42%, 10=20.31%, 20=34.51%, 50=25.26% lat (msec) : 100=1.69% cpu : usr=0.16%, sys=26.33%, ctx=1960, 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=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=151358: Wed Dec 3 15:37:22 2025 read: IOPS=30, BW=488KiB/s (500kB/s)(5744KiB/11771msec) clat (usec): min=162, max=184577, avg=16686.17, stdev=14507.60 lat (usec): min=162, max=184579, avg=16687.19, stdev=14507.60 clat percentiles (usec): | 1.00th=[ 190], 5.00th=[ 297], 10.00th=[ 416], 20.00th=[ 9241], | 30.00th=[ 10814], 40.00th=[ 12911], 50.00th=[ 14877], 60.00th=[ 17695], | 70.00th=[ 19792], 80.00th=[ 23462], 90.00th=[ 30016], 95.00th=[ 35914], | 99.00th=[ 72877], 99.50th=[ 83362], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 256, max= 672, per=24.38%, avg=487.39, stdev=112.04, samples=23 iops : min= 16, max= 42, avg=30.04, stdev= 7.07, samples=23 write: IOPS=34, BW=556KiB/s (569kB/s)(6544KiB/11771msec); 0 zone resets clat (usec): min=1518, max=131373, avg=13981.46, stdev=13400.04 lat (usec): min=1520, max=131375, avg=13985.30, stdev=13400.20 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2245], 10.00th=[ 2999], 20.00th=[ 3982], | 30.00th=[ 4948], 40.00th=[ 6980], 50.00th=[ 9241], 60.00th=[ 13960], | 70.00th=[ 17433], 80.00th=[ 22152], 90.00th=[ 30540], 95.00th=[ 38011], | 99.00th=[ 51119], 99.50th=[ 76022], 99.90th=[131597], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 256, max= 928, per=26.40%, avg=555.09, stdev=141.45, samples=23 iops : min= 16, max= 58, avg=34.30, stdev= 8.82, samples=23 lat (usec) : 250=1.69%, 500=4.17%, 750=1.17% lat (msec) : 2=2.21%, 4=8.72%, 10=22.14%, 20=33.72%, 50=24.87% lat (msec) : 100=1.04%, 250=0.26% cpu : usr=0.15%, sys=26.43%, ctx=2059, 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=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=151359: Wed Dec 3 15:37:22 2025 read: IOPS=33, BW=535KiB/s (548kB/s)(6256KiB/11686msec) clat (usec): min=131, max=87150, avg=15679.84, stdev=11251.97 lat (usec): min=132, max=87151, avg=15680.87, stdev=11251.95 clat percentiles (usec): | 1.00th=[ 153], 5.00th=[ 297], 10.00th=[ 367], 20.00th=[ 7504], | 30.00th=[10814], 40.00th=[12911], 50.00th=[14877], 60.00th=[17433], | 70.00th=[20055], 80.00th=[23200], 90.00th=[28181], 95.00th=[34341], | 99.00th=[48497], 99.50th=[61604], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 352, max= 736, per=26.90%, avg=537.65, stdev=109.30, samples=23 iops : min= 22, max= 46, avg=33.22, stdev= 6.86, samples=23 write: IOPS=32, BW=516KiB/s (529kB/s)(6032KiB/11686msec); 0 zone resets clat (usec): min=1292, max=141419, avg=14474.95, stdev=13576.51 lat (usec): min=1293, max=141420, avg=14476.68, stdev=13576.53 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 2573], 10.00th=[ 3195], 20.00th=[ 4228], | 30.00th=[ 5342], 40.00th=[ 7570], 50.00th=[ 10945], 60.00th=[ 13698], | 70.00th=[ 17433], 80.00th=[ 23462], 90.00th=[ 29492], 95.00th=[ 36963], | 99.00th=[ 64226], 99.50th=[ 69731], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 256, max= 896, per=24.47%, avg=514.57, stdev=164.42, samples=23 iops : min= 16, max= 56, avg=31.74, stdev=10.35, samples=23 lat (usec) : 250=1.95%, 500=6.25%, 750=0.39%, 1000=0.26% lat (msec) : 2=1.95%, 4=7.29%, 10=18.36%, 20=35.55%, 50=26.69% lat (msec) : 100=1.17%, 250=0.13% cpu : usr=0.18%, sys=26.10%, ctx=2078, 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=151360: Wed Dec 3 15:37:22 2025 read: IOPS=31, BW=504KiB/s (516kB/s)(6032KiB/11978msec) clat (usec): min=66, max=112691, avg=16021.38, stdev=13408.07 lat (usec): min=67, max=112693, avg=16022.34, stdev=13408.09 clat percentiles (usec): | 1.00th=[ 137], 5.00th=[ 212], 10.00th=[ 314], 20.00th=[ 7373], | 30.00th=[ 10814], 40.00th=[ 12518], 50.00th=[ 14877], 60.00th=[ 16712], | 70.00th=[ 20055], 80.00th=[ 23200], 90.00th=[ 28967], 95.00th=[ 36439], | 99.00th=[ 68682], 99.50th=[112722], 99.90th=[112722], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 211, max= 699, per=24.52%, avg=490.17, stdev=119.83, samples=23 iops : min= 13, max= 43, avg=30.22, stdev= 7.32, samples=23 write: IOPS=32, BW=522KiB/s (535kB/s)(6256KiB/11978msec); 0 zone resets clat (usec): min=1186, max=197687, avg=14969.41, stdev=14958.06 lat (usec): min=1188, max=197690, avg=14973.21, stdev=14956.98 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2868], 10.00th=[ 3752], 20.00th=[ 4555], | 30.00th=[ 5932], 40.00th=[ 8225], 50.00th=[ 11338], 60.00th=[ 15008], | 70.00th=[ 18220], 80.00th=[ 22676], 90.00th=[ 29230], 95.00th=[ 36963], | 99.00th=[ 56361], 99.50th=[ 81265], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 290, max= 768, per=24.28%, avg=510.57, stdev=131.38, samples=23 iops : min= 18, max= 48, avg=31.52, stdev= 8.16, samples=23 lat (usec) : 100=0.39%, 250=2.73%, 500=4.69%, 750=0.65%, 1000=0.26% lat (msec) : 2=1.30%, 4=5.60%, 10=20.96%, 20=35.03%, 50=26.43% lat (msec) : 100=1.56%, 250=0.39% cpu : usr=0.18%, sys=25.80%, ctx=2055, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2000KiB/s (2048kB/s), 488KiB/s-535KiB/s (500kB/s-548kB/s), io=23.4MiB (24.5MB), run=11408-11978msec WRITE: bw=2104KiB/s (2154kB/s), 516KiB/s-558KiB/s (529kB/s-572kB/s), io=24.6MiB (25.8MB), run=11408-11978msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151352: Wed Dec 3 15:37:35 2025 read: IOPS=14, BW=237KiB/s (243kB/s)(5920KiB/24947msec) clat (usec): min=4294, max=99563, avg=15768.78, stdev=15376.95 lat (usec): min=4295, max=99563, avg=15769.84, stdev=15376.89 clat percentiles (usec): | 1.00th=[ 4359], 5.00th=[ 5145], 10.00th=[ 5538], 20.00th=[ 6259], | 30.00th=[ 6980], 40.00th=[ 7898], 50.00th=[ 8979], 60.00th=[11076], | 70.00th=[16450], 80.00th=[22676], 90.00th=[32900], 95.00th=[49546], | 99.00th=[76022], 99.50th=[91751], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 31, max= 574, per=24.69%, avg=234.04, stdev=118.48, samples=49 iops : min= 1, max= 35, avg=14.18, stdev= 7.54, samples=49 write: IOPS=15, BW=255KiB/s (261kB/s)(6368KiB/24947msec); 0 zone resets clat (msec): min=22, max=222, avg=47.86, stdev=21.00 lat (msec): min=22, max=222, avg=47.86, stdev=21.00 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 34], | 30.00th=[ 37], 40.00th=[ 41], 50.00th=[ 44], 60.00th=[ 48], | 70.00th=[ 53], 80.00th=[ 57], 90.00th=[ 70], 95.00th=[ 87], | 99.00th=[ 128], 99.50th=[ 159], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 96, max= 415, per=25.54%, avg=254.63, stdev=94.31, samples=49 iops : min= 6, max= 25, avg=15.47, stdev= 6.03, samples=49 lat (msec) : 10=26.56%, 20=10.55%, 50=43.62%, 100=17.71%, 250=1.56% cpu : usr=0.09%, sys=5.52%, ctx=1492, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151353: Wed Dec 3 15:37:35 2025 read: IOPS=14, BW=227KiB/s (233kB/s)(5744KiB/25258msec) clat (msec): min=4, max=108, avg=14.94, stdev=15.49 lat (msec): min=4, max=108, avg=14.94, stdev=15.49 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 11], | 70.00th=[ 15], 80.00th=[ 22], 90.00th=[ 32], 95.00th=[ 50], | 99.00th=[ 83], 99.50th=[ 101], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 53, max= 510, per=24.37%, avg=231.02, stdev=116.42, samples=49 iops : min= 3, max= 31, avg=14.02, stdev= 7.30, samples=49 write: IOPS=16, BW=259KiB/s (265kB/s)(6544KiB/25258msec); 0 zone resets clat (msec): min=21, max=216, avg=48.46, stdev=22.50 lat (msec): min=21, max=216, avg=48.46, stdev=22.49 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 27], 10.00th=[ 29], 20.00th=[ 32], | 30.00th=[ 35], 40.00th=[ 39], 50.00th=[ 43], 60.00th=[ 48], | 70.00th=[ 53], 80.00th=[ 61], 90.00th=[ 78], 95.00th=[ 91], | 99.00th=[ 130], 99.50th=[ 140], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 95, max= 480, per=25.90%, avg=258.26, stdev=100.59, samples=50 iops : min= 5, max= 30, avg=15.70, stdev= 6.44, samples=50 lat (msec) : 10=27.86%, 20=9.24%, 50=41.80%, 100=19.01%, 250=2.08% cpu : usr=0.09%, sys=5.75%, ctx=1543, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151355: Wed Dec 3 15:37:35 2025 read: IOPS=16, BW=259KiB/s (265kB/s)(6256KiB/24158msec) clat (usec): min=4198, max=87483, avg=14355.16, stdev=13284.16 lat (usec): min=4199, max=87484, avg=14356.35, stdev=13284.08 clat percentiles (usec): | 1.00th=[ 4555], 5.00th=[ 5276], 10.00th=[ 5735], 20.00th=[ 6456], | 30.00th=[ 6980], 40.00th=[ 7832], 50.00th=[ 8979], 60.00th=[10421], | 70.00th=[13698], 80.00th=[19792], 90.00th=[30540], 95.00th=[42206], | 99.00th=[72877], 99.50th=[79168], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 63, max= 608, per=27.59%, avg=261.51, stdev=139.48, samples=47 iops : min= 3, max= 38, avg=15.94, stdev= 8.83, samples=47 write: IOPS=15, BW=250KiB/s (256kB/s)(6032KiB/24158msec); 0 zone resets clat (msec): min=21, max=157, avg=49.10, stdev=20.96 lat (msec): min=21, max=157, avg=49.10, stdev=20.96 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 28], 10.00th=[ 29], 20.00th=[ 33], | 30.00th=[ 37], 40.00th=[ 40], 50.00th=[ 44], 60.00th=[ 48], | 70.00th=[ 54], 80.00th=[ 62], 90.00th=[ 74], 95.00th=[ 92], | 99.00th=[ 127], 99.50th=[ 153], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 95, max= 446, per=24.91%, avg=248.38, stdev=92.07, samples=47 iops : min= 5, max= 27, avg=15.11, stdev= 5.88, samples=47 lat (msec) : 10=29.30%, 20=11.59%, 50=40.10%, 100=17.32%, 250=1.69% cpu : usr=0.10%, sys=5.68%, ctx=1479, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151356: Wed Dec 3 15:37:35 2025 read: IOPS=15, BW=244KiB/s (250kB/s)(6032KiB/24755msec) clat (msec): min=4, max=132, avg=14.81, stdev=14.56 lat (msec): min=4, max=132, avg=14.81, stdev=14.56 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 11], | 70.00th=[ 14], 80.00th=[ 21], 90.00th=[ 33], 95.00th=[ 47], | 99.00th=[ 74], 99.50th=[ 91], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 31, max= 544, per=25.57%, avg=242.45, stdev=118.75, samples=49 iops : min= 1, max= 34, avg=14.71, stdev= 7.52, samples=49 write: IOPS=15, BW=253KiB/s (259kB/s)(6256KiB/24755msec); 0 zone resets clat (msec): min=21, max=171, avg=48.82, stdev=19.90 lat (msec): min=21, max=171, avg=48.82, stdev=19.90 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 34], | 30.00th=[ 37], 40.00th=[ 41], 50.00th=[ 45], 60.00th=[ 48], | 70.00th=[ 55], 80.00th=[ 64], 90.00th=[ 73], 95.00th=[ 87], | 99.00th=[ 118], 99.50th=[ 148], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 126, max= 415, per=25.34%, avg=252.67, stdev=93.43, samples=49 iops : min= 7, max= 25, avg=15.35, stdev= 5.96, samples=49 lat (msec) : 10=28.65%, 20=10.29%, 50=40.36%, 100=19.53%, 250=1.17% cpu : usr=0.09%, sys=5.52%, ctx=1456, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=948KiB/s (971kB/s), 227KiB/s-259KiB/s (233kB/s-265kB/s), io=23.4MiB (24.5MB), run=24158-25258msec WRITE: bw=998KiB/s (1022kB/s), 250KiB/s-259KiB/s (256kB/s-265kB/s), io=24.6MiB (25.8MB), run=24158-25258msec 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=151372: Wed Dec 3 15:37:44 2025 read: IOPS=2, BW=2707KiB/s (2772kB/s)(7168KiB/2648msec) clat (msec): min=63, max=302, avg=154.21, stdev=90.75 lat (msec): min=63, max=302, avg=154.21, stdev=90.75 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 65], | 30.00th=[ 73], 40.00th=[ 73], 50.00th=[ 186], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 205], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 2003, max= 5485, per=65.51%, avg=3834.33, stdev=1748.02, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1934KiB/s (1980kB/s)(5120KiB/2648msec); 0 zone resets clat (msec): min=192, max=468, avg=300.58, stdev=119.85 lat (msec): min=192, max=468, avg=300.69, stdev=119.89 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1828, max= 4087, per=30.41%, avg=2491.50, stdev=1067.89, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=25.00%, 250=41.67%, 500=33.33% cpu : usr=0.04%, sys=9.44%, ctx=82, 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=151373: Wed Dec 3 15:37:44 2025 read: IOPS=0, BW=590KiB/s (604kB/s)(2048KiB/3474msec) clat (msec): min=223, max=302, avg=263.31, stdev=55.62 lat (msec): min=223, max=302, avg=263.31, stdev=55.62 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 1835, max= 2048, per=33.17%, avg=1941.50, stdev=150.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2948KiB/s (3018kB/s)(10.0MiB/3474msec); 0 zone resets clat (msec): min=105, max=612, avg=282.71, stdev=141.01 lat (msec): min=105, max=613, avg=282.80, stdev=141.02 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 140], | 30.00th=[ 234], 40.00th=[ 245], 50.00th=[ 251], 60.00th=[ 255], | 70.00th=[ 266], 80.00th=[ 347], 90.00th=[ 376], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2003, max= 4096, per=34.67%, avg=2841.00, stdev=1109.19, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.30, samples=5 lat (msec) : 250=50.00%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=7.92%, ctx=89, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151374: Wed Dec 3 15:37:44 2025 read: IOPS=2, BW=2114KiB/s (2165kB/s)(6144KiB/2906msec) clat (msec): min=98, max=559, avg=238.13, stdev=172.94 lat (msec): min=98, max=559, avg=238.13, stdev=172.94 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 115], | 30.00th=[ 115], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 236], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 2003, max= 4087, per=43.33%, avg=2536.25, stdev=1034.03, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=2, BW=2114KiB/s (2165kB/s)(6144KiB/2906msec); 0 zone resets clat (msec): min=136, max=415, avg=241.83, stdev=103.53 lat (msec): min=136, max=415, avg=241.91, stdev=103.53 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 184], 50.00th=[ 184], 60.00th=[ 243], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 2003, max= 3549, per=29.30%, avg=2400.50, stdev=765.88, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, 750=8.33% cpu : usr=0.10%, sys=9.50%, 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=151375: Wed Dec 3 15:37:44 2025 read: IOPS=1, BW=1463KiB/s (1498kB/s)(5120KiB/3499msec) clat (msec): min=89, max=396, avg=234.51, stdev=133.52 lat (msec): min=89, max=396, avg=234.51, stdev=133.52 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 90], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 169], 60.00th=[ 169], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2003, max= 4096, per=46.40%, avg=2715.67, stdev=1195.62, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=2, BW=2049KiB/s (2098kB/s)(7168KiB/3499msec); 0 zone resets clat (msec): min=185, max=508, avg=309.45, stdev=122.72 lat (msec): min=185, max=508, avg=309.53, stdev=122.73 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 305], 60.00th=[ 334], | 70.00th=[ 334], 80.00th=[ 422], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 1815, max= 2048, per=24.20%, avg=1983.20, stdev=96.21, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=9.09%, ctx=132, 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=5853KiB/s (5994kB/s), 590KiB/s-2707KiB/s (604kB/s-2772kB/s), io=20.0MiB (20.0MB), run=2648-3499msec WRITE: bw=8194KiB/s (8391kB/s), 1934KiB/s-2948KiB/s (1980kB/s-3018kB/s), io=28.0MiB (29.4MB), run=2648-3499msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151377: Wed Dec 3 15:37:44 2025 read: IOPS=2, BW=2786KiB/s (2853kB/s)(7168KiB/2573msec) clat (usec): min=1357, max=170980, avg=118161.45, stdev=56769.55 lat (usec): min=1358, max=170981, avg=118162.84, stdev=56769.54 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1352], 10.00th=[ 1352], 20.00th=[103285], | 30.00th=[116917], 40.00th=[116917], 50.00th=[130548], 60.00th=[141558], | 70.00th=[141558], 80.00th=[162530], 90.00th=[170918], 95.00th=[170918], | 99.00th=[170918], 99.50th=[170918], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 1973, max= 5774, per=66.02%, avg=3939.33, stdev=1903.92, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1990KiB/s (2038kB/s)(5120KiB/2573msec); 0 zone resets clat (msec): min=193, max=557, avg=327.93, stdev=173.60 lat (msec): min=193, max=557, avg=328.00, stdev=173.59 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 218], 60.00th=[ 218], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 2011, max= 3946, per=29.96%, avg=2502.75, stdev=962.22, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 2=8.33%, 250=75.00%, 500=8.33%, 750=8.33% cpu : usr=0.00%, sys=32.93%, ctx=566, 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=151378: Wed Dec 3 15:37:44 2025 read: IOPS=0, BW=597KiB/s (611kB/s)(2048KiB/3432msec) clat (usec): min=889, max=324561, avg=162725.79, stdev=228870.52 lat (usec): min=891, max=324563, avg=162727.58, stdev=228871.21 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 889], 10.00th=[ 889], 20.00th=[ 889], | 30.00th=[ 889], 40.00th=[ 889], 50.00th=[ 889], 60.00th=[325059], | 70.00th=[325059], 80.00th=[325059], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 1914, max= 2019, per=32.96%, avg=1966.50, stdev=74.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2984KiB/s (3055kB/s)(10.0MiB/3432msec); 0 zone resets clat (msec): min=83, max=913, avg=300.70, stdev=243.74 lat (msec): min=83, max=913, avg=300.77, stdev=243.74 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 92], | 30.00th=[ 150], 40.00th=[ 169], 50.00th=[ 190], 60.00th=[ 313], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 409], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 2035, max= 4096, per=42.47%, avg=3548.25, stdev=1009.32, samples=4 iops : min= 1, max= 4, avg= 2.75, stdev= 1.26, samples=4 lat (usec) : 1000=8.33% lat (msec) : 100=16.67%, 250=25.00%, 500=41.67%, 1000=8.33% cpu : usr=0.00%, sys=24.22%, ctx=174, 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=151379: Wed Dec 3 15:37:44 2025 read: IOPS=2, BW=2438KiB/s (2497kB/s)(6144KiB/2520msec) clat (usec): min=669, max=435248, avg=125749.62, stdev=190605.92 lat (usec): min=671, max=435249, avg=125750.86, stdev=190606.00 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[ 758], | 30.00th=[ 758], 40.00th=[ 1045], 50.00th=[ 1045], 60.00th=[ 22414], | 70.00th=[295699], 80.00th=[295699], 90.00th=[434111], 95.00th=[434111], | 99.00th=[434111], 99.50th=[434111], 99.90th=[434111], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 3946, max= 4023, per=66.78%, avg=3984.50, stdev=54.45, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2438KiB/s (2497kB/s)(6144KiB/2520msec); 0 zone resets clat (msec): min=112, max=818, avg=286.32, stdev=272.56 lat (msec): min=112, max=818, avg=286.38, stdev=272.57 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 130], | 30.00th=[ 130], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 184], | 70.00th=[ 334], 80.00th=[ 334], 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= 3771, max= 4023, per=46.65%, avg=3897.00, stdev=178.19, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 2=8.33%, 50=8.33%, 250=33.33%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=26.52%, ctx=225, 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=151380: Wed Dec 3 15:37:44 2025 read: IOPS=1, BW=1995KiB/s (2042kB/s)(5120KiB/2567msec) clat (usec): min=627, max=267065, avg=53984.77, stdev=119115.58 lat (usec): min=627, max=267066, avg=53985.63, stdev=119115.79 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], 20.00th=[ 627], | 30.00th=[ 627], 40.00th=[ 627], 50.00th=[ 758], 60.00th=[ 758], | 70.00th=[ 848], 80.00th=[ 848], 90.00th=[267387], 95.00th=[267387], | 99.00th=[267387], 99.50th=[267387], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 7892, max= 7892, per=100.00%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2792KiB/s (2859kB/s)(7168KiB/2567msec); 0 zone resets clat (msec): min=107, max=569, avg=303.38, stdev=191.03 lat (msec): min=107, max=569, avg=303.46, stdev=191.02 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 132], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 313], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 535], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1910, max= 4023, per=31.55%, avg=2635.33, stdev=1202.17, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=16.67%, 1000=16.67% lat (msec) : 250=25.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=27.16%, ctx=184, 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=5967KiB/s (6111kB/s), 597KiB/s-2786KiB/s (611kB/s-2853kB/s), io=20.0MiB (20.0MB), run=2520-3432msec WRITE: bw=8354KiB/s (8555kB/s), 1990KiB/s-2984KiB/s (2038kB/s-3055kB/s), io=28.0MiB (29.4MB), run=2520-3432msec 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=151387: Wed Dec 3 15:37:53 2025 read: IOPS=3, BW=14.7MiB/s (15.4MB/s)(12.0MiB/819msec) clat (msec): min=205, max=249, avg=226.69, stdev=21.86 lat (msec): min=205, max=249, avg=226.69, stdev=21.86 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 226], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 249], 95.00th=[ 249], | 99.00th=[ 249], 99.50th=[ 249], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min=12245, max=12245, per=100.00%, avg=12245.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=100.00% cpu : usr=0.00%, sys=25.67%, ctx=75, 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=151388: Wed Dec 3 15:37:53 2025 read: IOPS=0, BW=1688KiB/s (1729kB/s)(4096KiB/2426msec) clat (nsec): min=1000.3M, max=1000.3M, avg=1000346982.00, stdev= 0.00 lat (nsec): min=1000.3M, max=1000.3M, avg=1000347861.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] 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=3377KiB/s (3458kB/s)(8192KiB/2426msec); 0 zone resets clat (msec): min=285, max=982, avg=633.97, stdev=492.44 lat (msec): min=285, max=982, avg=634.26, stdev=492.58 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 986], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 8047, max= 8047, per=59.58%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=8.66%, ctx=67, 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=151389: Wed Dec 3 15:37:53 2025 write: IOPS=1, BW=6015KiB/s (6159kB/s)(12.0MiB/2043msec); 0 zone resets clat (msec): min=315, max=944, avg=654.44, stdev=317.60 lat (msec): min=315, max=944, avg=654.81, stdev=317.60 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8175, max= 8175, per=60.52%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=14.89%, ctx=60, 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=151391: Wed Dec 3 15:37:53 2025 write: IOPS=2, BW=8336KiB/s (8537kB/s)(12.0MiB/1474msec); 0 zone resets clat (msec): min=306, max=798, avg=473.07, stdev=281.54 lat (msec): min=306, max=798, avg=473.46, stdev=281.54 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7037, max= 8175, per=56.31%, avg=7606.00, stdev=804.69, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=12.76%, ctx=76, 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=6754KiB/s (6916kB/s), 1688KiB/s-14.7MiB/s (1729kB/s-15.4MB/s), io=16.0MiB (16.8MB), run=819-2426msec WRITE: bw=13.2MiB/s (13.8MB/s), 3377KiB/s-8336KiB/s (3458kB/s-8537kB/s), io=32.0MiB (33.6MB), run=1474-2426msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151390: Wed Dec 3 15:37:53 2025 read: IOPS=1, BW=6923KiB/s (7089kB/s)(12.0MiB/1775msec) clat (msec): min=510, max=606, avg=546.83, stdev=51.93 lat (msec): min=510, max=606, avg=546.83, stdev=51.93 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 8110, max= 8175, per=96.12%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=30.38%, ctx=609, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151392: Wed Dec 3 15:37:53 2025 read: IOPS=0, BW=2118KiB/s (2169kB/s)(4096KiB/1934msec) clat (nsec): min=574908k, max=574908k, avg=574908145.00, stdev= 0.00 lat (nsec): min=574909k, max=574909k, avg=574908915.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 8175, max= 8175, per=96.51%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4236KiB/s (4337kB/s)(8192KiB/1934msec); 0 zone resets clat (msec): min=477, max=791, avg=634.66, stdev=221.69 lat (msec): min=478, max=792, avg=635.18, stdev=221.99 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 793], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 8175, max= 8175, per=56.41%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=17.33%, ctx=345, 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=151393: Wed Dec 3 15:37:53 2025 write: IOPS=1, BW=5435KiB/s (5565kB/s)(12.0MiB/2261msec); 0 zone resets clat (msec): min=214, max=1187, avg=729.96, stdev=489.37 lat (msec): min=215, max=1188, avg=730.44, stdev=489.02 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8047, max= 8110, per=55.74%, avg=8078.50, stdev=44.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.06%, ctx=48, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=151394: Wed Dec 3 15:37:53 2025 write: IOPS=1, BW=7169KiB/s (7341kB/s)(12.0MiB/1714msec); 0 zone resets clat (msec): min=297, max=844, avg=559.58, stdev=274.35 lat (msec): min=297, max=845, avg=559.93, stdev=274.41 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 535], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 6895, max= 8110, per=51.77%, avg=7502.50, stdev=859.13, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=18.51%, ctx=76, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=8472KiB/s (8675kB/s), 2118KiB/s-6923KiB/s (2169kB/s-7089kB/s), io=16.0MiB (16.8MB), run=1775-1934msec WRITE: bw=14.2MiB/s (14.8MB/s), 4236KiB/s-7169KiB/s (4337kB/s-7341kB/s), io=32.0MiB (33.6MB), run=1714-2261msec