== sanity test 398b: DIO and buffer IO race ============== 22:42:34 (1789267354) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.6808 s, 8.9 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=144645: Sat Sep 12 22:44:57 2026 read: IOPS=12, BW=48.7KiB/s (49.9kB/s)(5992KiB/122943msec) clat (usec): min=24, max=611363, avg=40502.39, stdev=35333.38 lat (usec): min=24, max=611365, avg=40508.50, stdev=35337.21 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 133], 20.00th=[ 17695], | 30.00th=[ 23462], 40.00th=[ 28705], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[139461], 99.50th=[168821], 99.90th=[362808], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 7, max= 116, per=25.68%, avg=48.79, stdev=21.87, samples=239 iops : min= 1, max= 29, avg=11.56, stdev= 5.52, samples=239 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(6296KiB/122943msec); 0 zone resets clat (usec): min=733, max=1188.9k, avg=39295.42, stdev=50714.54 lat (usec): min=734, max=1188.9k, avg=39299.06, stdev=50713.25 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1139], 10.00th=[ 1303], | 20.00th=[ 3097], 30.00th=[ 6652], 40.00th=[ 15795], | 50.00th=[ 27919], 60.00th=[ 37487], 70.00th=[ 52167], | 80.00th=[ 68682], 90.00th=[ 92799], 95.00th=[ 114820], | 99.00th=[ 177210], 99.50th=[ 235930], 99.90th=[ 413139], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 7, max= 129, per=25.74%, avg=51.23, stdev=21.28, samples=239 iops : min= 1, max= 32, avg=12.18, stdev= 5.38, samples=239 lat (usec) : 50=0.78%, 100=3.91%, 250=0.29%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.55% lat (msec) : 2=7.03%, 4=4.39%, 10=6.54%, 20=9.90%, 50=36.17% lat (msec) : 100=24.06%, 250=5.79%, 500=0.33%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.87%, ctx=6234, 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=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=144646: Sat Sep 12 22:44:57 2026 read: IOPS=11, BW=47.5KiB/s (48.6kB/s)(5940KiB/125183msec) clat (usec): min=33, max=616373, avg=40479.38, stdev=34889.35 lat (usec): min=33, max=616373, avg=40482.05, stdev=34889.58 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 58], 10.00th=[ 88], 20.00th=[ 18220], | 30.00th=[ 23725], 40.00th=[ 28967], 50.00th=[ 34866], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 59507], 90.00th=[ 72877], 95.00th=[ 88605], | 99.00th=[156238], 99.50th=[217056], 99.90th=[299893], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 111, per=25.39%, avg=48.23, stdev=22.25, samples=239 iops : min= 1, max= 27, avg=11.41, stdev= 5.61, samples=239 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(6348KiB/125183msec); 0 zone resets clat (usec): min=744, max=1201.5k, avg=40767.52, stdev=51796.99 lat (usec): min=744, max=1201.5k, avg=40773.34, stdev=51794.09 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1123], 10.00th=[ 1287], | 20.00th=[ 3556], 30.00th=[ 7308], 40.00th=[ 17171], | 50.00th=[ 29230], 60.00th=[ 39584], 70.00th=[ 52167], | 80.00th=[ 70779], 90.00th=[ 98042], 95.00th=[ 119014], | 99.00th=[ 183501], 99.50th=[ 212861], 99.90th=[ 392168], | 99.95th=[1199571], 99.99th=[1199571] bw ( KiB/s): min= 7, max= 133, per=25.32%, avg=50.38, stdev=22.28, samples=244 iops : min= 1, max= 33, avg=11.95, stdev= 5.62, samples=244 lat (usec) : 50=0.91%, 100=4.13%, 250=0.29%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.36% lat (msec) : 2=7.16%, 4=3.74%, 10=7.03%, 20=9.44%, 50=35.55% lat (msec) : 100=24.77%, 250=6.15%, 500=0.29%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.74%, ctx=6201, 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=144647: Sat Sep 12 22:44:57 2026 read: IOPS=12, BW=48.9KiB/s (50.0kB/s)(6028KiB/123344msec) clat (usec): min=22, max=1275.6k, avg=38852.92, stdev=43355.62 lat (usec): min=22, max=1275.6k, avg=38860.98, stdev=43351.87 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 58], 10.00th=[ 90], | 20.00th=[ 17171], 30.00th=[ 22152], 40.00th=[ 27132], | 50.00th=[ 32637], 60.00th=[ 39584], 70.00th=[ 47449], | 80.00th=[ 56886], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[ 131597], 99.50th=[ 149947], 99.90th=[ 375391], | 99.95th=[1283458], 99.99th=[1283458] bw ( KiB/s): min= 7, max= 136, per=26.00%, avg=49.40, stdev=21.30, samples=238 iops : min= 1, max= 34, avg=11.72, stdev= 5.36, samples=238 write: IOPS=12, BW=50.8KiB/s (51.0kB/s)(6260KiB/123344msec); 0 zone resets clat (usec): min=689, max=475321, avg=41094.13, stdev=43192.88 lat (usec): min=690, max=475323, avg=41101.06, stdev=43197.01 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1156], 10.00th=[ 1319], 20.00th=[ 3621], | 30.00th=[ 8717], 40.00th=[ 20579], 50.00th=[ 30802], 60.00th=[ 41681], | 70.00th=[ 54264], 80.00th=[ 70779], 90.00th=[ 93848], 95.00th=[117965], | 99.00th=[183501], 99.50th=[214959], 99.90th=[438305], 99.95th=[476054], | 99.99th=[476054] bw ( KiB/s): min= 7, max= 118, per=25.41%, avg=50.57, stdev=20.65, samples=241 iops : min= 1, max= 29, avg=12.02, stdev= 5.22, samples=241 lat (usec) : 50=0.78%, 100=4.26%, 250=0.39%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.36% lat (msec) : 2=7.23%, 4=3.19%, 10=5.53%, 20=10.32%, 50=37.40% lat (msec) : 100=24.61%, 250=5.57%, 500=0.13%, 2000=0.03% cpu : usr=0.07%, sys=4.67%, ctx=6232, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144648: Sat Sep 12 22:44:57 2026 read: IOPS=12, BW=48.1KiB/s (49.3kB/s)(6052KiB/125808msec) clat (usec): min=31, max=477400, avg=40112.08, stdev=32355.24 lat (usec): min=32, max=477402, avg=40114.02, stdev=32355.18 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 98], 20.00th=[ 18482], | 30.00th=[ 23462], 40.00th=[ 28705], 50.00th=[ 34866], 60.00th=[ 41157], | 70.00th=[ 49021], 80.00th=[ 58983], 90.00th=[ 77071], 95.00th=[ 90702], | 99.00th=[141558], 99.50th=[166724], 99.90th=[308282], 99.95th=[476054], | 99.99th=[476054] bw ( KiB/s): min= 7, max= 127, per=25.27%, avg=48.00, stdev=20.53, samples=246 iops : min= 1, max= 31, avg=11.35, stdev= 5.14, samples=246 write: IOPS=12, BW=49.6KiB/s (50.8kB/s)(6236KiB/125808msec); 0 zone resets clat (usec): min=741, max=1233.9k, avg=41518.79, stdev=52345.93 lat (usec): min=742, max=1233.9k, avg=41521.46, stdev=52345.78 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1139], 10.00th=[ 1303], | 20.00th=[ 3523], 30.00th=[ 8160], 40.00th=[ 20317], | 50.00th=[ 31327], 60.00th=[ 41681], 70.00th=[ 52691], | 80.00th=[ 70779], 90.00th=[ 94897], 95.00th=[ 122160], | 99.00th=[ 185598], 99.50th=[ 204473], 99.90th=[ 513803], | 99.95th=[1233126], 99.99th=[1233126] bw ( KiB/s): min= 7, max= 104, per=24.82%, avg=49.39, stdev=19.62, samples=246 iops : min= 1, max= 26, avg=11.71, stdev= 4.96, samples=246 lat (usec) : 50=1.11%, 100=3.84%, 250=0.20%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.36% lat (msec) : 2=7.29%, 4=3.22%, 10=6.25%, 20=9.11%, 50=37.83% lat (msec) : 100=24.61%, 250=5.89%, 500=0.13%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.70%, ctx=6385, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=191KiB/s (195kB/s), 47.5KiB/s-48.9KiB/s (48.6kB/s-50.0kB/s), io=23.4MiB (24.6MB), run=122943-125808msec WRITE: bw=200KiB/s (205kB/s), 49.6KiB/s-51.2KiB/s (50.8kB/s-52.4kB/s), io=24.6MiB (25.7MB), run=122943-125808msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144650: Sat Sep 12 22:47:34 2026 read: IOPS=5, BW=21.3KiB/s (21.8kB/s)(5992KiB/280854msec) clat (msec): min=5, max=1286, avg=38.44, stdev=50.47 lat (msec): min=5, max=1286, avg=38.44, stdev=50.47 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 52], 90.00th=[ 79], 95.00th=[ 102], | 99.00th=[ 186], 99.50th=[ 236], 99.90th=[ 575], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 104, per=28.38%, avg=24.12, stdev=16.50, samples=480 iops : min= 1, max= 26, avg= 5.43, stdev= 4.18, samples=480 write: IOPS=5, BW=22.4KiB/s (22.0kB/s)(6296KiB/280854msec); 0 zone resets clat (msec): min=37, max=683, avg=141.76, stdev=68.54 lat (msec): min=37, max=683, avg=141.77, stdev=68.54 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 87], | 30.00th=[ 100], 40.00th=[ 111], 50.00th=[ 125], 60.00th=[ 142], | 70.00th=[ 161], 80.00th=[ 190], 90.00th=[ 236], 95.00th=[ 279], | 99.00th=[ 355], 99.50th=[ 405], 99.90th=[ 514], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 55, per=24.92%, avg=22.18, stdev=10.21, samples=546 iops : min= 1, max= 13, avg= 4.94, stdev= 2.62, samples=546 lat (msec) : 10=3.42%, 20=14.29%, 50=21.32%, 100=23.18%, 250=33.46% lat (msec) : 500=4.17%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.08%, ctx=5462, 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=144651: Sat Sep 12 22:47:34 2026 read: IOPS=5, BW=21.0KiB/s (21.5kB/s)(5940KiB/282394msec) clat (msec): min=5, max=1314, avg=38.26, stdev=50.01 lat (msec): min=5, max=1314, avg=38.27, stdev=50.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 54], 90.00th=[ 74], 95.00th=[ 97], | 99.00th=[ 184], 99.50th=[ 262], 99.90th=[ 443], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 95, per=28.20%, avg=23.97, stdev=16.00, samples=478 iops : min= 1, max= 23, avg= 5.39, stdev= 4.04, samples=478 write: IOPS=5, BW=22.5KiB/s (23.0kB/s)(6348KiB/282394msec); 0 zone resets clat (msec): min=36, max=515, avg=142.06, stdev=69.41 lat (msec): min=36, max=515, avg=142.06, stdev=69.41 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 87], | 30.00th=[ 99], 40.00th=[ 112], 50.00th=[ 125], 60.00th=[ 140], | 70.00th=[ 165], 80.00th=[ 192], 90.00th=[ 234], 95.00th=[ 279], | 99.00th=[ 380], 99.50th=[ 409], 99.90th=[ 485], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 7, max= 56, per=24.82%, avg=22.09, stdev=10.46, samples=553 iops : min= 1, max= 14, avg= 4.91, stdev= 2.68, samples=553 lat (msec) : 10=3.58%, 20=14.29%, 50=20.15%, 100=24.15%, 250=33.40% lat (msec) : 500=4.36%, 750=0.03%, 2000=0.03% cpu : usr=0.03%, sys=1.08%, ctx=5492, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144652: Sat Sep 12 22:47:34 2026 read: IOPS=5, BW=21.4KiB/s (21.9kB/s)(6028KiB/282140msec) clat (msec): min=5, max=547, avg=39.25, stdev=40.23 lat (msec): min=5, max=547, avg=39.25, stdev=40.23 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 80], 95.00th=[ 106], | 99.00th=[ 192], 99.50th=[ 232], 99.90th=[ 523], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 103, per=27.84%, avg=23.67, stdev=16.52, samples=492 iops : min= 1, max= 25, avg= 5.30, stdev= 4.17, samples=492 write: IOPS=5, BW=22.2KiB/s (22.7kB/s)(6260KiB/282140msec); 0 zone resets clat (msec): min=37, max=1464, avg=142.39, stdev=76.53 lat (msec): min=37, max=1464, avg=142.40, stdev=76.53 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 85], | 30.00th=[ 97], 40.00th=[ 111], 50.00th=[ 125], 60.00th=[ 144], | 70.00th=[ 163], 80.00th=[ 192], 90.00th=[ 236], 95.00th=[ 275], | 99.00th=[ 351], 99.50th=[ 405], 99.90th=[ 617], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7, max= 55, per=24.68%, avg=21.97, stdev=10.58, samples=549 iops : min= 1, max= 13, avg= 4.88, stdev= 2.70, samples=549 lat (msec) : 10=3.55%, 20=13.54%, 50=21.06%, 100=24.45%, 250=33.24% lat (msec) : 500=4.00%, 750=0.13%, 2000=0.03% cpu : usr=0.03%, sys=1.05%, ctx=5269, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144653: Sat Sep 12 22:47:34 2026 read: IOPS=5, BW=21.7KiB/s (22.2kB/s)(6052KiB/279137msec) clat (msec): min=4, max=437, avg=37.39, stdev=34.24 lat (msec): min=4, max=437, avg=37.40, stdev=34.24 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 52], 90.00th=[ 74], 95.00th=[ 104], | 99.00th=[ 165], 99.50th=[ 194], 99.90th=[ 313], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 7, max= 112, per=28.40%, avg=24.14, stdev=17.12, samples=484 iops : min= 1, max= 28, avg= 5.43, stdev= 4.36, samples=484 write: IOPS=5, BW=22.3KiB/s (22.9kB/s)(6236KiB/279137msec); 0 zone resets clat (msec): min=34, max=1474, avg=142.68, stdev=77.41 lat (msec): min=34, max=1474, avg=142.69, stdev=77.41 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 87], | 30.00th=[ 100], 40.00th=[ 111], 50.00th=[ 126], 60.00th=[ 142], | 70.00th=[ 163], 80.00th=[ 192], 90.00th=[ 232], 95.00th=[ 279], | 99.00th=[ 368], 99.50th=[ 426], 99.90th=[ 684], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7, max= 56, per=24.76%, avg=22.04, stdev=10.63, samples=545 iops : min= 1, max= 14, avg= 4.90, stdev= 2.72, samples=545 lat (msec) : 10=3.06%, 20=14.75%, 50=21.71%, 100=22.59%, 250=33.85% lat (msec) : 500=3.94%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.06%, ctx=5326, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=85.0KiB/s (87.1kB/s), 21.0KiB/s-21.7KiB/s (21.5kB/s-22.2kB/s), io=23.4MiB (24.6MB), run=279137-282394msec WRITE: bw=89.0KiB/s (91.2kB/s), 22.2KiB/s-22.5KiB/s (22.7kB/s-23.0kB/s), io=24.6MiB (25.7MB), run=279137-282394msec 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=144712: Sat Sep 12 22:48:13 2026 read: IOPS=13, BW=208KiB/s (213kB/s)(5920KiB/28395msec) clat (usec): min=38, max=279766, avg=38889.75, stdev=38771.72 lat (usec): min=38, max=279767, avg=38890.87, stdev=38771.70 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 75], | 30.00th=[ 16188], 40.00th=[ 27395], 50.00th=[ 33424], 60.00th=[ 42730], | 70.00th=[ 51119], 80.00th=[ 63177], 90.00th=[ 78119], 95.00th=[ 95945], | 99.00th=[175113], 99.50th=[252707], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 61, max= 569, per=25.86%, avg=207.88, stdev=97.31, samples=56 iops : min= 3, max= 35, avg=12.23, stdev= 6.13, samples=56 write: IOPS=14, BW=224KiB/s (230kB/s)(6368KiB/28395msec); 0 zone resets clat (usec): min=1047, max=223683, avg=34431.39, stdev=41701.18 lat (usec): min=1049, max=223684, avg=34436.03, stdev=41700.15 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1614], 10.00th=[ 1795], 20.00th=[ 3589], | 30.00th=[ 6259], 40.00th=[ 10945], 50.00th=[ 18482], 60.00th=[ 30016], | 70.00th=[ 40633], 80.00th=[ 57934], 90.00th=[ 95945], 95.00th=[117965], | 99.00th=[214959], 99.50th=[219153], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 446, per=26.49%, avg=224.11, stdev=100.98, samples=56 iops : min= 1, max= 27, avg=13.27, stdev= 6.33, samples=56 lat (usec) : 50=1.69%, 100=9.77%, 250=1.04%, 500=0.13% lat (msec) : 2=6.64%, 4=4.82%, 10=9.11%, 20=9.11%, 50=30.34% lat (msec) : 100=20.83%, 250=6.25%, 500=0.26% cpu : usr=0.07%, sys=4.94%, ctx=1245, 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=144713: Sat Sep 12 22:48:13 2026 read: IOPS=12, BW=193KiB/s (198kB/s)(5744KiB/29764msec) clat (usec): min=24, max=231265, avg=40776.98, stdev=35823.12 lat (usec): min=24, max=231266, avg=40778.91, stdev=35823.64 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 56], 10.00th=[ 65], 20.00th=[ 196], | 30.00th=[ 23725], 40.00th=[ 30016], 50.00th=[ 36963], 60.00th=[ 45351], | 70.00th=[ 51643], 80.00th=[ 64750], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[160433], 99.50th=[223347], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 461, per=24.26%, avg=195.04, stdev=94.07, samples=57 iops : min= 1, max= 28, avg=11.42, stdev= 5.89, samples=57 write: IOPS=13, BW=220KiB/s (225kB/s)(6544KiB/29764msec); 0 zone resets clat (usec): min=1405, max=385695, avg=36418.64, stdev=44014.19 lat (usec): min=1407, max=385697, avg=36428.69, stdev=44011.90 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1729], 10.00th=[ 2147], 20.00th=[ 4359], | 30.00th=[ 6718], 40.00th=[ 11207], 50.00th=[ 21890], 60.00th=[ 33424], | 70.00th=[ 42206], 80.00th=[ 64226], 90.00th=[ 91751], 95.00th=[116917], | 99.00th=[189793], 99.50th=[223347], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 64, max= 509, per=25.77%, avg=218.03, stdev=86.43, samples=58 iops : min= 4, max= 31, avg=12.88, stdev= 5.44, samples=58 lat (usec) : 50=0.91%, 100=7.16%, 250=1.30%, 500=0.52%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=5.47%, 4=4.69%, 10=9.90%, 20=8.72%, 50=32.55% lat (msec) : 100=21.35%, 250=6.77%, 500=0.26% cpu : usr=0.07%, sys=5.49%, ctx=1416, 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=144714: Sat Sep 12 22:48:13 2026 read: IOPS=13, BW=220KiB/s (225kB/s)(6256KiB/28464msec) clat (usec): min=35, max=278068, avg=42755.90, stdev=36142.62 lat (usec): min=36, max=278069, avg=42757.10, stdev=36142.62 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 1045], | 30.00th=[ 24773], 40.00th=[ 31589], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[110625], | 99.00th=[154141], 99.50th=[204473], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 93, max= 377, per=27.39%, avg=220.23, stdev=65.92, samples=56 iops : min= 5, max= 23, avg=13.04, stdev= 4.20, samples=56 write: IOPS=13, BW=212KiB/s (217kB/s)(6032KiB/28464msec); 0 zone resets clat (usec): min=1301, max=254717, avg=30997.03, stdev=39871.14 lat (usec): min=1302, max=254719, avg=30999.16, stdev=39871.40 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1696], 10.00th=[ 1844], 20.00th=[ 3228], | 30.00th=[ 5211], 40.00th=[ 7898], 50.00th=[ 13304], 60.00th=[ 25035], | 70.00th=[ 34866], 80.00th=[ 50594], 90.00th=[ 83362], 95.00th=[109577], | 99.00th=[173016], 99.50th=[235930], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 63, max= 478, per=24.75%, avg=209.36, stdev=98.05, samples=56 iops : min= 3, max= 29, avg=12.36, stdev= 6.14, samples=56 lat (usec) : 50=1.17%, 100=7.55%, 250=1.30%, 500=0.13% lat (msec) : 2=6.12%, 4=6.25%, 10=10.55%, 20=7.29%, 50=31.51% lat (msec) : 100=22.01%, 250=5.86%, 500=0.26% cpu : usr=0.07%, sys=4.95%, ctx=1316, 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=144715: Sat Sep 12 22:48:13 2026 read: IOPS=13, BW=221KiB/s (226kB/s)(6032KiB/27326msec) clat (usec): min=27, max=190688, avg=38079.22, stdev=34912.59 lat (usec): min=27, max=190689, avg=38081.31, stdev=34912.72 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 52], 10.00th=[ 59], 20.00th=[ 71], | 30.00th=[ 15139], 40.00th=[ 27395], 50.00th=[ 34866], 60.00th=[ 41681], | 70.00th=[ 51119], 80.00th=[ 64226], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[156238], 99.50th=[181404], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 31, max= 505, per=27.36%, avg=219.94, stdev=92.37, samples=54 iops : min= 1, max= 31, avg=13.02, stdev= 5.80, samples=54 write: IOPS=14, BW=229KiB/s (234kB/s)(6256KiB/27326msec); 0 zone resets clat (usec): min=1186, max=255175, avg=32624.16, stdev=40187.72 lat (usec): min=1189, max=255178, avg=32634.33, stdev=40190.85 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1598], 10.00th=[ 1795], 20.00th=[ 3130], | 30.00th=[ 5342], 40.00th=[ 8029], 50.00th=[ 13829], 60.00th=[ 25560], | 70.00th=[ 36439], 80.00th=[ 62129], 90.00th=[ 99091], 95.00th=[115868], | 99.00th=[158335], 99.50th=[235930], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 62, max= 474, per=27.56%, avg=233.15, stdev=81.62, samples=53 iops : min= 3, max= 29, avg=13.83, stdev= 5.16, samples=53 lat (usec) : 50=2.08%, 100=10.03%, 250=0.91%, 500=0.39% lat (msec) : 2=6.77%, 4=6.51%, 10=9.64%, 20=7.42%, 50=28.91% lat (msec) : 100=20.18%, 250=7.03%, 500=0.13% cpu : usr=0.06%, sys=5.13%, ctx=1231, 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=805KiB/s (824kB/s), 193KiB/s-221KiB/s (198kB/s-226kB/s), io=23.4MiB (24.5MB), run=27326-29764msec WRITE: bw=847KiB/s (867kB/s), 212KiB/s-229KiB/s (217kB/s-234kB/s), io=24.6MiB (25.8MB), run=27326-29764msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144716: Sat Sep 12 22:48:56 2026 read: IOPS=5, BW=81.3KiB/s (83.2kB/s)(5920KiB/72837msec) clat (msec): min=6, max=292, avg=40.98, stdev=44.15 lat (msec): min=6, max=292, avg=40.98, stdev=44.15 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 50], 90.00th=[ 83], 95.00th=[ 131], | 99.00th=[ 245], 99.50th=[ 257], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 352, per=29.28%, avg=95.76, stdev=60.58, samples=120 iops : min= 1, max= 22, avg= 5.23, stdev= 3.86, samples=120 write: IOPS=5, BW=87.4KiB/s (89.5kB/s)(6368KiB/72837msec); 0 zone resets clat (msec): min=45, max=442, avg=144.29, stdev=69.76 lat (msec): min=45, max=442, avg=144.29, stdev=69.76 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 65], 10.00th=[ 79], 20.00th=[ 89], | 30.00th=[ 102], 40.00th=[ 114], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 161], 80.00th=[ 188], 90.00th=[ 239], 95.00th=[ 279], | 99.00th=[ 397], 99.50th=[ 430], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 22, max= 191, per=25.63%, avg=88.17, stdev=40.27, samples=141 iops : min= 1, max= 11, avg= 4.77, stdev= 2.58, samples=141 lat (msec) : 10=1.17%, 20=13.67%, 50=23.96%, 100=20.44%, 250=36.07% lat (msec) : 500=4.69% cpu : usr=0.05%, sys=1.08%, ctx=1194, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144717: Sat Sep 12 22:48:56 2026 read: IOPS=4, BW=78.5KiB/s (80.4kB/s)(5744KiB/73128msec) clat (msec): min=7, max=292, avg=37.39, stdev=37.14 lat (msec): min=7, max=292, avg=37.40, stdev=37.14 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 49], 90.00th=[ 79], 95.00th=[ 112], | 99.00th=[ 209], 99.50th=[ 249], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 22, max= 320, per=28.30%, avg=92.55, stdev=62.08, samples=121 iops : min= 1, max= 20, avg= 5.07, stdev= 3.88, samples=121 write: IOPS=5, BW=89.5KiB/s (91.6kB/s)(6544KiB/73128msec); 0 zone resets clat (msec): min=42, max=430, avg=145.14, stdev=68.48 lat (msec): min=42, max=430, avg=145.14, stdev=68.48 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 77], 20.00th=[ 92], | 30.00th=[ 104], 40.00th=[ 114], 50.00th=[ 130], 60.00th=[ 148], | 70.00th=[ 161], 80.00th=[ 188], 90.00th=[ 241], 95.00th=[ 288], | 99.00th=[ 363], 99.50th=[ 401], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 30, max= 223, per=26.41%, avg=90.85, stdev=41.18, samples=141 iops : min= 1, max= 13, avg= 4.94, stdev= 2.65, samples=141 lat (msec) : 10=1.56%, 20=16.15%, 50=20.31%, 100=20.70%, 250=36.59% lat (msec) : 500=4.69% cpu : usr=0.03%, sys=1.09%, ctx=1279, 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=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=144718: Sat Sep 12 22:48:56 2026 read: IOPS=5, BW=89.9KiB/s (92.0kB/s)(6256KiB/69607msec) clat (msec): min=6, max=363, avg=38.11, stdev=40.73 lat (msec): min=6, max=363, avg=38.11, stdev=40.73 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 47], 90.00th=[ 78], 95.00th=[ 113], | 99.00th=[ 213], 99.50th=[ 275], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 30, max= 416, per=31.26%, avg=102.21, stdev=73.04, samples=121 iops : min= 1, max= 26, avg= 5.65, stdev= 4.60, samples=121 write: IOPS=5, BW=86.7KiB/s (88.7kB/s)(6032KiB/69607msec); 0 zone resets clat (msec): min=39, max=567, avg=144.17, stdev=70.97 lat (msec): min=39, max=567, avg=144.18, stdev=70.98 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 77], 20.00th=[ 88], | 30.00th=[ 105], 40.00th=[ 118], 50.00th=[ 130], 60.00th=[ 144], | 70.00th=[ 167], 80.00th=[ 190], 90.00th=[ 224], 95.00th=[ 249], | 99.00th=[ 485], 99.50th=[ 510], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 30, max= 190, per=25.47%, avg=87.61, stdev=36.49, samples=135 iops : min= 1, max= 11, avg= 4.73, stdev= 2.38, samples=135 lat (msec) : 10=1.69%, 20=16.28%, 50=24.35%, 100=18.88%, 250=36.20% lat (msec) : 500=2.21%, 750=0.39% cpu : usr=0.04%, sys=1.18%, ctx=1282, 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=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=144719: Sat Sep 12 22:48:56 2026 read: IOPS=5, BW=84.7KiB/s (86.8kB/s)(6032KiB/71187msec) clat (msec): min=5, max=363, avg=38.97, stdev=40.55 lat (msec): min=5, max=363, avg=38.98, stdev=40.55 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 50], 90.00th=[ 85], 95.00th=[ 113], | 99.00th=[ 234], 99.50th=[ 253], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 30, max= 285, per=30.81%, avg=100.74, stdev=62.61, samples=117 iops : min= 1, max= 17, avg= 5.55, stdev= 3.95, samples=117 write: IOPS=5, BW=87.9KiB/s (89.0kB/s)(6256KiB/71187msec); 0 zone resets clat (msec): min=42, max=478, avg=144.18, stdev=71.21 lat (msec): min=42, max=478, avg=144.19, stdev=71.22 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 67], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 103], 40.00th=[ 115], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 159], 80.00th=[ 192], 90.00th=[ 232], 95.00th=[ 305], | 99.00th=[ 393], 99.50th=[ 435], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 30, max= 192, per=25.44%, avg=87.51, stdev=40.35, samples=140 iops : min= 1, max= 12, avg= 4.73, stdev= 2.59, samples=140 lat (msec) : 10=1.04%, 20=15.36%, 50=23.96%, 100=19.92%, 250=35.68% lat (msec) : 500=4.04% cpu : usr=0.05%, sys=1.13%, ctx=1243, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=328KiB/s (335kB/s), 78.5KiB/s-89.9KiB/s (80.4kB/s-92.0kB/s), io=23.4MiB (24.5MB), run=69607-73128msec WRITE: bw=345KiB/s (353kB/s), 86.7KiB/s-89.5KiB/s (88.7kB/s-91.6kB/s), io=24.6MiB (25.8MB), run=69607-73128msec 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=144750: Sat Sep 12 22:49:11 2026 read: IOPS=2, BW=2108KiB/s (2158kB/s)(7168KiB/3401msec) clat (usec): min=533, max=392736, avg=218520.20, stdev=160916.03 lat (usec): min=534, max=392738, avg=218521.73, stdev=160916.05 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 8029], | 30.00th=[200279], 40.00th=[200279], 50.00th=[240124], 60.00th=[325059], | 70.00th=[325059], 80.00th=[362808], 90.00th=[392168], 95.00th=[392168], | 99.00th=[392168], 99.50th=[392168], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 1976, max= 4047, per=64.55%, avg=2993.00, stdev=1155.07, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1505KiB/s (1542kB/s)(5120KiB/3401msec); 0 zone resets clat (msec): min=224, max=613, avg=373.82, stdev=169.08 lat (msec): min=225, max=613, avg=373.94, stdev=169.07 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2023, max= 4055, per=41.70%, avg=2707.00, stdev=1167.45, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=13.44%, ctx=344, 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=144751: Sat Sep 12 22:49:11 2026 read: IOPS=0, BW=464KiB/s (475kB/s)(2048KiB/4416msec) clat (usec): min=813, max=283616, avg=142215.17, stdev=199972.09 lat (usec): min=814, max=283619, avg=142216.75, stdev=199973.04 clat percentiles (usec): | 1.00th=[ 816], 5.00th=[ 816], 10.00th=[ 816], 20.00th=[ 816], | 30.00th=[ 816], 40.00th=[ 816], 50.00th=[ 816], 60.00th=[283116], | 70.00th=[283116], 80.00th=[283116], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 1526, max= 2011, per=38.14%, avg=1768.50, stdev=342.95, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2319KiB/s (2374kB/s)(10.0MiB/4416msec); 0 zone resets clat (msec): min=93, max=1530, avg=408.55, stdev=447.12 lat (msec): min=93, max=1532, avg=412.52, stdev=446.04 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 118], | 30.00th=[ 169], 40.00th=[ 192], 50.00th=[ 211], 60.00th=[ 234], | 70.00th=[ 264], 80.00th=[ 468], 90.00th=[ 810], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 2011, max= 6071, per=61.90%, avg=4018.50, stdev=2309.24, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 2.31, samples=4 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=11.12%, ctx=112, 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=144752: Sat Sep 12 22:49:11 2026 read: IOPS=1, BW=1834KiB/s (1878kB/s)(6144KiB/3350msec) clat (usec): min=769, max=285964, avg=132054.35, stdev=141498.55 lat (usec): min=770, max=285966, avg=132055.73, stdev=141498.67 clat percentiles (usec): | 1.00th=[ 766], 5.00th=[ 766], 10.00th=[ 766], 20.00th=[ 2704], | 30.00th=[ 2704], 40.00th=[ 8455], 50.00th=[ 8455], 60.00th=[229639], | 70.00th=[265290], 80.00th=[265290], 90.00th=[287310], 95.00th=[287310], | 99.00th=[287310], 99.50th=[287310], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 2023, max= 4023, per=54.54%, avg=2529.00, stdev=996.04, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1834KiB/s (1878kB/s)(6144KiB/3350msec); 0 zone resets clat (msec): min=99, max=842, avg=425.92, stdev=310.27 lat (msec): min=99, max=843, avg=426.00, stdev=310.29 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 296], | 70.00th=[ 785], 80.00th=[ 785], 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= 2011, max= 2723, per=33.83%, avg=2196.00, stdev=351.40, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 10=8.33%, 100=8.33%, 250=16.67%, 500=33.33% lat (msec) : 1000=16.67% cpu : usr=0.00%, sys=12.30%, ctx=179, 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=144753: Sat Sep 12 22:49:11 2026 read: IOPS=1, BW=1363KiB/s (1396kB/s)(5120KiB/3756msec) clat (usec): min=509, max=314684, avg=167841.70, stdev=154257.38 lat (usec): min=510, max=314686, avg=167843.04, stdev=154257.47 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 799], 40.00th=[ 799], 50.00th=[252707], 60.00th=[252707], | 70.00th=[270533], 80.00th=[270533], 90.00th=[316670], 95.00th=[316670], | 99.00th=[316670], 99.50th=[316670], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 2027, max= 6035, per=86.93%, avg=4031.00, stdev=2834.08, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1908KiB/s (1954kB/s)(7168KiB/3756msec); 0 zone resets clat (msec): min=143, max=1086, avg=416.31, stdev=393.15 lat (msec): min=143, max=1086, avg=416.48, stdev=393.28 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 155], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 215], 60.00th=[ 264], | 70.00th=[ 264], 80.00th=[ 877], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1434, max= 2043, per=28.85%, avg=1873.00, stdev=293.58, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=33.33%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=10.60%, ctx=104, 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=4638KiB/s (4749kB/s), 464KiB/s-2108KiB/s (475kB/s-2158kB/s), io=20.0MiB (20.0MB), run=3350-4416msec WRITE: bw=6493KiB/s (6649kB/s), 1505KiB/s-2319KiB/s (1542kB/s-2374kB/s), io=28.0MiB (29.4MB), run=3350-4416msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144745: Sat Sep 12 22:49:11 2026 read: IOPS=1, BW=1842KiB/s (1886kB/s)(7168KiB/3892msec) clat (msec): min=136, max=430, avg=212.31, stdev=102.13 lat (msec): min=136, max=430, avg=212.31, stdev=102.13 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 153], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 165], 60.00th=[ 207], | 70.00th=[ 207], 80.00th=[ 239], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1921, max= 5269, per=72.17%, avg=2795.75, stdev=1649.65, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=1, BW=1316KiB/s (1347kB/s)(5120KiB/3892msec); 0 zone resets clat (msec): min=277, max=897, avg=470.74, stdev=254.66 lat (msec): min=277, max=897, avg=470.86, stdev=254.65 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1921, max= 2031, per=36.55%, avg=1982.60, stdev=45.58, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=2.96%, ctx=49, 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=144746: Sat Sep 12 22:49:11 2026 read: IOPS=0, BW=387KiB/s (397kB/s)(2048KiB/5286msec) clat (msec): min=185, max=329, avg=257.40, stdev=101.53 lat (msec): min=185, max=329, avg=257.40, stdev=101.53 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 1809, max= 1935, per=48.32%, avg=1872.00, stdev=89.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1937KiB/s (1984kB/s)(10.0MiB/5286msec); 0 zone resets clat (msec): min=111, max=933, avg=455.04, stdev=317.74 lat (msec): min=111, max=933, avg=455.23, stdev=317.75 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 171], | 30.00th=[ 197], 40.00th=[ 234], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 523], 80.00th=[ 785], 90.00th=[ 927], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1921, max= 6035, per=54.84%, avg=2974.50, stdev=1685.24, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=25.00% cpu : usr=0.00%, sys=3.65%, ctx=83, 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=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=144747: Sat Sep 12 22:49:11 2026 read: IOPS=1, BW=1193KiB/s (1222kB/s)(6144KiB/5148msec) clat (msec): min=70, max=879, avg=391.03, stdev=299.57 lat (msec): min=70, max=879, avg=391.03, stdev=299.57 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 126], | 30.00th=[ 126], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 372], | 70.00th=[ 575], 80.00th=[ 575], 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= 1924, max= 3984, per=63.76%, avg=2470.00, stdev=1010.03, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1193KiB/s (1222kB/s)(6144KiB/5148msec); 0 zone resets clat (msec): min=156, max=901, avg=452.79, stdev=296.55 lat (msec): min=156, max=901, avg=452.88, stdev=296.57 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 435], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1370, max= 2031, per=34.68%, avg=1880.80, stdev=285.97, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=2.21%, ctx=70, 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=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=144748: Sat Sep 12 22:49:11 2026 read: IOPS=1, BW=1095KiB/s (1121kB/s)(5120KiB/4677msec) clat (msec): min=137, max=560, avg=308.34, stdev=190.42 lat (msec): min=137, max=560, avg=308.34, stdev=190.42 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 218], 60.00th=[ 218], | 70.00th=[ 460], 80.00th=[ 460], 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= 3842, max= 4063, per=100.00%, avg=3952.50, stdev=156.27, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1533KiB/s (1569kB/s)(7168KiB/4677msec); 0 zone resets clat (msec): min=238, max=790, avg=431.47, stdev=188.92 lat (msec): min=238, max=790, avg=431.69, stdev=188.96 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 288], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 359], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 523], 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= 1865, max= 3900, per=43.18%, avg=2342.20, stdev=872.79, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=2.93%, ctx=50, 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=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=3874KiB/s (3967kB/s), 387KiB/s-1842KiB/s (397kB/s-1886kB/s), io=20.0MiB (20.0MB), run=3892-5286msec WRITE: bw=5424KiB/s (5554kB/s), 1193KiB/s-1937KiB/s (1222kB/s-1984kB/s), io=28.0MiB (29.4MB), run=3892-5286msec 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=144765: Sat Sep 12 22:49:24 2026 read: IOPS=0, BW=3922KiB/s (4016kB/s)(12.0MiB/3133msec) clat (msec): min=763, max=1226, avg=1029.62, stdev=239.42 lat (msec): min=763, max=1226, avg=1029.62, stdev=239.42 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=10.03%, ctx=319, 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=144766: Sat Sep 12 22:49:24 2026 read: IOPS=0, BW=1048KiB/s (1073kB/s)(4096KiB/3909msec) clat (nsec): min=916689k, max=916689k, avg=916689471.00, stdev= 0.00 lat (nsec): min=916693k, max=916693k, avg=916692695.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2096KiB/s (2146kB/s)(8192KiB/3909msec); 0 zone resets clat (msec): min=1273, max=1661, avg=1467.60, stdev=274.03 lat (msec): min=1280, max=1661, avg=1471.26, stdev=269.64 clat percentiles (msec): | 1.00th=[ 1267], 5.00th=[ 1267], 10.00th=[ 1267], 20.00th=[ 1267], | 30.00th=[ 1267], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1670], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=4.07%, ctx=220, 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=144767: Sat Sep 12 22:49:24 2026 write: IOPS=0, BW=2980KiB/s (3051kB/s)(12.0MiB/4124msec); 0 zone resets clat (msec): min=651, max=1774, avg=1361.29, stdev=617.61 lat (msec): min=651, max=1774, avg=1362.41, stdev=618.08 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 1653], 50.00th=[ 1653], 60.00th=[ 1653], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.02%, sys=2.74%, ctx=42, 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=144768: Sat Sep 12 22:49:24 2026 write: IOPS=0, BW=3680KiB/s (3768kB/s)(12.0MiB/3339msec); 0 zone resets clat (msec): min=418, max=1479, avg=1073.72, stdev=572.46 lat (msec): min=419, max=1480, avg=1074.54, stdev=572.74 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7907, max= 8094, per=100.00%, avg=8000.50, stdev=132.23, 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=0.00%, sys=4.76%, ctx=93, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4191KiB/s (4292kB/s), 1048KiB/s-3922KiB/s (1073kB/s-4016kB/s), io=16.0MiB (16.8MB), run=3133-3909msec WRITE: bw=7946KiB/s (8136kB/s), 2096KiB/s-3680KiB/s (2146kB/s-3768kB/s), io=32.0MiB (33.6MB), run=3339-4124msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144760: Sat Sep 12 22:49:24 2026 read: IOPS=0, BW=2957KiB/s (3028kB/s)(12.0MiB/4156msec) clat (msec): min=1229, max=1444, avg=1328.02, stdev=108.61 lat (msec): min=1229, max=1444, avg=1328.02, stdev=108.61 clat percentiles (msec): | 1.00th=[ 1234], 5.00th=[ 1234], 10.00th=[ 1234], 20.00th=[ 1234], | 30.00th=[ 1234], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 7968, max= 8159, per=100.00%, avg=8063.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=3.20%, ctx=62, 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=144761: Sat Sep 12 22:49:24 2026 read: IOPS=0, BW=874KiB/s (895kB/s)(4096KiB/4687msec) clat (nsec): min=1518.4M, max=1518.4M, avg=1518351263.00, stdev= 0.00 lat (nsec): min=1518.4M, max=1518.4M, avg=1518353820.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1519], 5.00th=[ 1519], 10.00th=[ 1519], 20.00th=[ 1519], | 30.00th=[ 1519], 40.00th=[ 1519], 50.00th=[ 1519], 60.00th=[ 1519], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1748KiB/s (1790kB/s)(8192KiB/4687msec); 0 zone resets clat (msec): min=769, max=2188, avg=1478.96, stdev=1002.80 lat (msec): min=770, max=2188, avg=1479.46, stdev=1002.86 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 2198], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.88%, ctx=61, 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=144762: Sat Sep 12 22:49:24 2026 write: IOPS=1, BW=5105KiB/s (5228kB/s)(12.0MiB/2407msec); 0 zone resets clat (msec): min=264, max=1613, avg=751.48, stdev=748.71 lat (msec): min=264, max=1613, avg=751.96, stdev=748.59 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 1620], 80.00th=[ 1620], 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= 7433, max= 8094, per=100.00%, avg=7763.50, stdev=467.40, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.08%, sys=6.48%, ctx=68, 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=144764: Sat Sep 12 22:49:24 2026 write: IOPS=1, BW=4724KiB/s (4838kB/s)(12.0MiB/2601msec); 0 zone resets clat (msec): min=452, max=1114, avg=829.05, stdev=340.06 lat (msec): min=455, max=1120, avg=832.11, stdev=341.36 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=4.12%, ctx=45, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3496KiB/s (3580kB/s), 874KiB/s-2957KiB/s (895kB/s-3028kB/s), io=16.0MiB (16.8MB), run=4156-4687msec WRITE: bw=6991KiB/s (7159kB/s), 1748KiB/s-5105KiB/s (1790kB/s-5228kB/s), io=32.0MiB (33.6MB), run=2407-4687msec