== sanity test 398b: DIO and buffer IO race ============== 18:25:43 (1775168743) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.9457 s, 17.1 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=151966: Thu Apr 2 18:26:50 2026 read: IOPS=26, BW=106KiB/s (109kB/s)(5992KiB/56312msec) clat (usec): min=33, max=714494, avg=19025.10, stdev=22539.98 lat (usec): min=33, max=714495, avg=19027.76, stdev=22541.00 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 133], 10.00th=[ 7635], 20.00th=[ 9765], | 30.00th=[ 11731], 40.00th=[ 13829], 50.00th=[ 16057], 60.00th=[ 18744], | 70.00th=[ 21890], 80.00th=[ 26608], 90.00th=[ 32637], 95.00th=[ 38011], | 99.00th=[ 76022], 99.50th=[ 95945], 99.90th=[183501], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 199, per=25.50%, avg=106.06, stdev=32.52, samples=112 iops : min= 1, max= 49, avg=26.10, stdev= 8.16, samples=112 write: IOPS=27, BW=112KiB/s (114kB/s)(6296KiB/56312msec); 0 zone resets clat (usec): min=822, max=164245, avg=17462.45, stdev=15994.95 lat (usec): min=823, max=164245, avg=17470.81, stdev=15998.48 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1778], 10.00th=[ 2311], 20.00th=[ 3523], | 30.00th=[ 5669], 40.00th=[ 10028], 50.00th=[ 14091], 60.00th=[ 17957], | 70.00th=[ 22676], 80.00th=[ 28181], 90.00th=[ 38011], 95.00th=[ 47449], | 99.00th=[ 70779], 99.50th=[ 80217], 99.90th=[147850], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 8, max= 231, per=25.83%, avg=112.35, stdev=33.12, samples=111 iops : min= 2, max= 57, avg=27.68, stdev= 8.25, samples=111 lat (usec) : 50=0.23%, 100=1.37%, 250=1.69%, 500=0.16%, 1000=0.13% lat (msec) : 2=3.29%, 4=8.40%, 10=15.36%, 20=33.79%, 50=32.75% lat (msec) : 100=2.51%, 250=0.29%, 750=0.03% cpu : usr=0.14%, sys=21.58%, ctx=8128, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151967: Thu Apr 2 18:26:50 2026 read: IOPS=26, BW=105KiB/s (108kB/s)(5940KiB/56513msec) clat (usec): min=38, max=122007, avg=18332.29, stdev=12055.60 lat (usec): min=38, max=122009, avg=18335.97, stdev=12054.40 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 202], 10.00th=[ 7963], 20.00th=[ 10159], | 30.00th=[ 11994], 40.00th=[ 13829], 50.00th=[ 15926], 60.00th=[ 18220], | 70.00th=[ 21890], 80.00th=[ 25560], 90.00th=[ 31851], 95.00th=[ 37487], | 99.00th=[ 61080], 99.50th=[ 80217], 99.90th=[119014], 99.95th=[122160], | 99.99th=[122160] bw ( KiB/s): min= 7, max= 160, per=25.09%, avg=104.36, stdev=29.05, samples=112 iops : min= 1, max= 40, avg=25.67, stdev= 7.28, samples=112 write: IOPS=28, BW=112KiB/s (115kB/s)(6348KiB/56513msec); 0 zone resets clat (usec): min=810, max=714372, avg=18264.05, stdev=23747.24 lat (usec): min=811, max=714373, avg=18265.52, stdev=23747.20 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1876], 10.00th=[ 2638], 20.00th=[ 3982], | 30.00th=[ 6390], 40.00th=[ 10945], 50.00th=[ 14484], 60.00th=[ 18744], | 70.00th=[ 22676], 80.00th=[ 28181], 90.00th=[ 38011], 95.00th=[ 46924], | 99.00th=[ 70779], 99.50th=[ 78119], 99.90th=[181404], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 39, max= 215, per=25.75%, avg=112.00, stdev=32.31, samples=111 iops : min= 9, max= 53, avg=27.59, stdev= 8.08, samples=111 lat (usec) : 50=0.23%, 100=1.11%, 250=1.37%, 500=0.13%, 1000=0.10% lat (msec) : 2=2.90%, 4=7.49%, 10=15.85%, 20=34.73%, 50=33.20% lat (msec) : 100=2.67%, 250=0.20%, 750=0.03% cpu : usr=0.15%, sys=21.90%, ctx=8287, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151970: Thu Apr 2 18:26:50 2026 read: IOPS=26, BW=105KiB/s (107kB/s)(6028KiB/57675msec) clat (usec): min=33, max=131641, avg=18301.41, stdev=12859.43 lat (usec): min=35, max=131643, avg=18303.38, stdev=12859.35 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 137], 10.00th=[ 7242], 20.00th=[ 9634], | 30.00th=[ 11600], 40.00th=[ 13698], 50.00th=[ 16188], 60.00th=[ 18482], | 70.00th=[ 21627], 80.00th=[ 25822], 90.00th=[ 31589], 95.00th=[ 37487], | 99.00th=[ 64226], 99.50th=[ 84411], 99.90th=[117965], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 32, max= 191, per=25.33%, avg=105.36, stdev=32.65, samples=112 iops : min= 8, max= 47, avg=25.91, stdev= 8.20, samples=112 write: IOPS=27, BW=109KiB/s (111kB/s)(6260KiB/57675msec); 0 zone resets clat (usec): min=941, max=768732, avg=19042.68, stdev=25252.87 lat (usec): min=942, max=768735, avg=19044.03, stdev=25252.94 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1909], 10.00th=[ 2442], 20.00th=[ 3949], | 30.00th=[ 6456], 40.00th=[ 11207], 50.00th=[ 14746], 60.00th=[ 18744], | 70.00th=[ 23462], 80.00th=[ 30278], 90.00th=[ 39584], 95.00th=[ 49546], | 99.00th=[ 80217], 99.50th=[ 89654], 99.90th=[141558], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 8, max= 215, per=24.88%, avg=108.23, stdev=32.99, samples=113 iops : min= 2, max= 53, avg=26.64, stdev= 8.21, samples=113 lat (usec) : 50=0.13%, 100=1.53%, 250=1.76%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=2.99%, 4=7.52%, 10=15.01%, 20=34.64%, 50=32.75% lat (msec) : 100=3.19%, 250=0.29%, 1000=0.03% cpu : usr=0.14%, sys=21.00%, ctx=8103, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151971: Thu Apr 2 18:26:50 2026 read: IOPS=27, BW=109KiB/s (112kB/s)(6052KiB/55532msec) clat (usec): min=24, max=163355, avg=17635.90, stdev=12570.03 lat (usec): min=24, max=163356, avg=17637.31, stdev=12570.28 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 115], 10.00th=[ 7111], 20.00th=[ 9503], | 30.00th=[ 11338], 40.00th=[ 13042], 50.00th=[ 15401], 60.00th=[ 17957], | 70.00th=[ 20841], 80.00th=[ 25297], 90.00th=[ 30802], 95.00th=[ 36439], | 99.00th=[ 56886], 99.50th=[ 82314], 99.90th=[143655], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 24, max= 175, per=26.27%, avg=109.30, stdev=32.52, samples=109 iops : min= 6, max= 43, avg=26.91, stdev= 8.17, samples=109 write: IOPS=28, BW=112KiB/s (115kB/s)(6236KiB/55532msec); 0 zone resets clat (usec): min=800, max=717625, avg=18288.05, stdev=23828.09 lat (usec): min=800, max=717626, avg=18290.39, stdev=23827.56 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1958], 10.00th=[ 2507], 20.00th=[ 3884], | 30.00th=[ 5932], 40.00th=[ 10421], 50.00th=[ 14091], 60.00th=[ 18744], | 70.00th=[ 22938], 80.00th=[ 29230], 90.00th=[ 38536], 95.00th=[ 47449], | 99.00th=[ 69731], 99.50th=[ 82314], 99.90th=[162530], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 15, max= 208, per=25.71%, avg=111.85, stdev=31.49, samples=110 iops : min= 3, max= 52, avg=27.55, stdev= 7.90, samples=110 lat (usec) : 50=0.39%, 100=1.63%, 250=1.76%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=2.51%, 4=7.91%, 10=16.28%, 20=34.28%, 50=32.29% lat (msec) : 100=2.41%, 250=0.23%, 750=0.03% cpu : usr=0.14%, sys=21.83%, ctx=8221, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=416KiB/s (426kB/s), 105KiB/s-109KiB/s (107kB/s-112kB/s), io=23.4MiB (24.6MB), run=55532-57675msec WRITE: bw=436KiB/s (446kB/s), 109KiB/s-112KiB/s (111kB/s-115kB/s), io=24.6MiB (25.7MB), run=55532-57675msec fio: pid=151968, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=151965: Thu Apr 2 18:27:31 2026 read: IOPS=15, BW=60.7KiB/s (62.2kB/s)(5992KiB/98706msec) clat (msec): min=3, max=728, avg=16.72, stdev=23.91 lat (msec): min=3, max=728, avg=16.72, stdev=23.91 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 16], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 44], | 99.00th=[ 77], 99.50th=[ 97], 99.90th=[ 236], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 192, per=28.03%, avg=60.82, stdev=36.63, samples=194 iops : min= 1, max= 48, avg=14.84, stdev= 9.25, samples=194 write: IOPS=15, BW=63.8KiB/s (65.3kB/s)(6296KiB/98706msec); 0 zone resets clat (msec): min=15, max=190, avg=46.61, stdev=23.25 lat (msec): min=15, max=190, avg=46.62, stdev=23.25 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 29], | 30.00th=[ 32], 40.00th=[ 36], 50.00th=[ 41], 60.00th=[ 46], | 70.00th=[ 54], 80.00th=[ 64], 90.00th=[ 77], 95.00th=[ 91], | 99.00th=[ 127], 99.50th=[ 144], 99.90th=[ 182], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 16, max= 128, per=28.05%, avg=63.95, stdev=27.98, samples=194 iops : min= 4, max= 32, avg=15.62, stdev= 7.10, samples=194 lat (msec) : 4=0.10%, 10=19.17%, 20=19.92%, 50=41.70%, 100=17.06% lat (msec) : 250=2.02%, 750=0.03% cpu : usr=0.09%, sys=6.18%, ctx=6155, 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=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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=151968: Thu Apr 2 18:27:31 2026 read: IOPS=11, BW=47.0KiB/s (48.2kB/s)(3400KiB/72295msec) clat (msec): min=4, max=719, avg=21.81, stdev=29.04 lat (msec): min=4, max=719, avg=21.82, stdev=29.04 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 42], 95.00th=[ 52], | 99.00th=[ 82], 99.50th=[ 111], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 127, per=21.96%, avg=47.66, stdev=24.32, samples=141 iops : min= 1, max= 31, avg=11.49, stdev= 6.10, samples=141 write: IOPS=13, BW=52.1KiB/s (53.3kB/s)(3764KiB/72295msec); 0 zone resets clat (msec): min=18, max=256, avg=56.82, stdev=24.21 lat (msec): min=18, max=256, avg=56.82, stdev=24.21 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 30], 10.00th=[ 33], 20.00th=[ 39], | 30.00th=[ 43], 40.00th=[ 48], 50.00th=[ 53], 60.00th=[ 58], | 70.00th=[ 65], 80.00th=[ 71], 90.00th=[ 83], 95.00th=[ 99], | 99.00th=[ 159], 99.50th=[ 169], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 8, max= 103, per=22.81%, avg=52.01, stdev=20.34, samples=143 iops : min= 2, max= 25, avg=12.57, stdev= 5.14, samples=143 lat (msec) : 10=13.11%, 20=15.62%, 50=39.23%, 100=29.35%, 250=2.51% lat (msec) : 500=0.06%, 750=0.06% cpu : usr=0.07%, sys=5.99%, ctx=3240, majf=0, minf=18 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=851,941,0,0 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=151969: Thu Apr 2 18:27:31 2026 read: IOPS=15, BW=61.1KiB/s (62.6kB/s)(6028KiB/98644msec) clat (msec): min=4, max=190, avg=16.52, stdev=14.79 lat (msec): min=4, max=190, avg=16.52, stdev=14.79 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 33], 95.00th=[ 45], | 99.00th=[ 71], 99.50th=[ 95], 99.90th=[ 142], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 7, max= 168, per=28.57%, avg=62.00, stdev=34.06, samples=192 iops : min= 1, max= 42, avg=15.13, stdev= 8.64, samples=192 write: IOPS=15, BW=63.5KiB/s (64.0kB/s)(6260KiB/98644msec); 0 zone resets clat (msec): min=17, max=768, avg=46.94, stdev=29.60 lat (msec): min=17, max=768, avg=46.94, stdev=29.60 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 29], | 30.00th=[ 32], 40.00th=[ 36], 50.00th=[ 41], 60.00th=[ 46], | 70.00th=[ 54], 80.00th=[ 63], 90.00th=[ 77], 95.00th=[ 89], | 99.00th=[ 126], 99.50th=[ 144], 99.90th=[ 266], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 128, per=27.76%, avg=63.30, stdev=28.83, samples=195 iops : min= 1, max= 32, avg=15.46, stdev= 7.31, samples=195 lat (msec) : 10=18.20%, 20=20.02%, 50=42.58%, 100=17.68%, 250=1.46% lat (msec) : 500=0.03%, 1000=0.03% cpu : usr=0.10%, sys=6.20%, ctx=6114, 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=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=151972: Thu Apr 2 18:27:31 2026 read: IOPS=15, BW=61.5KiB/s (62.0kB/s)(6052KiB/98431msec) clat (msec): min=3, max=189, avg=16.38, stdev=14.07 lat (msec): min=3, max=189, avg=16.38, stdev=14.07 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 16], 80.00th=[ 23], 90.00th=[ 36], 95.00th=[ 47], | 99.00th=[ 65], 99.50th=[ 81], 99.90th=[ 100], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 7, max= 184, per=28.63%, avg=62.13, stdev=35.18, samples=193 iops : min= 1, max= 46, avg=15.16, stdev= 8.86, samples=193 write: IOPS=15, BW=63.4KiB/s (64.9kB/s)(6236KiB/98431msec); 0 zone resets clat (msec): min=17, max=747, avg=47.05, stdev=29.50 lat (msec): min=17, max=747, avg=47.05, stdev=29.50 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 29], | 30.00th=[ 32], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 45], | 70.00th=[ 53], 80.00th=[ 64], 90.00th=[ 79], 95.00th=[ 89], | 99.00th=[ 128], 99.50th=[ 159], 99.90th=[ 268], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8, max= 120, per=27.76%, avg=63.30, stdev=27.60, samples=195 iops : min= 2, max= 30, avg=15.46, stdev= 7.01, samples=195 lat (msec) : 4=0.10%, 10=18.95%, 20=19.60%, 50=42.51%, 100=17.48% lat (msec) : 250=1.30%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=6.22%, ctx=6091, 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=218KiB/s (223kB/s), 47.0KiB/s-61.5KiB/s (48.2kB/s-62.0kB/s), io=20.0MiB (21.0MB), run=72295-98706msec WRITE: bw=229KiB/s (234kB/s), 52.1KiB/s-63.8KiB/s (53.3kB/s-65.3kB/s), io=22.0MiB (23.1MB), run=72295-98706msec 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=152006: Thu Apr 2 18:27:51 2026 read: IOPS=27, BW=440KiB/s (451kB/s)(5920KiB/13450msec) clat (usec): min=40, max=63110, avg=17468.78, stdev=12106.38 lat (usec): min=40, max=63112, avg=17484.24, stdev=12144.58 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 91], 10.00th=[ 119], 20.00th=[ 7701], | 30.00th=[12256], 40.00th=[14746], 50.00th=[16581], 60.00th=[19530], | 70.00th=[22938], 80.00th=[26870], 90.00th=[32113], 95.00th=[38536], | 99.00th=[53216], 99.50th=[55837], 99.90th=[63177], 99.95th=[63177], | 99.99th=[63177] bw ( KiB/s): min= 254, max= 704, per=26.20%, avg=440.88, stdev=128.61, samples=26 iops : min= 15, max= 44, avg=26.92, stdev= 8.07, samples=26 write: IOPS=29, BW=473KiB/s (485kB/s)(6368KiB/13450msec); 0 zone resets clat (usec): min=1301, max=79414, avg=17283.85, stdev=14701.36 lat (usec): min=1302, max=79417, avg=17286.14, stdev=14701.32 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2638], 10.00th=[ 3458], 20.00th=[ 4686], | 30.00th=[ 6390], 40.00th=[ 9634], 50.00th=[12911], 60.00th=[17433], | 70.00th=[20841], 80.00th=[27919], 90.00th=[39060], 95.00th=[47973], | 99.00th=[67634], 99.50th=[71828], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 158, max= 670, per=27.09%, avg=479.69, stdev=127.96, samples=26 iops : min= 9, max= 41, avg=29.35, stdev= 8.01, samples=26 lat (usec) : 50=0.39%, 100=2.99%, 250=5.21%, 500=0.65% lat (msec) : 2=1.04%, 4=6.38%, 10=15.89%, 20=31.38%, 50=33.33% lat (msec) : 100=2.73% cpu : usr=0.13%, sys=25.56%, ctx=2064, 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=152007: Thu Apr 2 18:27:51 2026 read: IOPS=25, BW=404KiB/s (413kB/s)(5744KiB/14228msec) clat (usec): min=38, max=76479, avg=19421.69, stdev=12847.76 lat (usec): min=39, max=76480, avg=19423.06, stdev=12847.56 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 82], 10.00th=[ 147], 20.00th=[ 9503], | 30.00th=[12911], 40.00th=[15139], 50.00th=[18482], 60.00th=[22414], | 70.00th=[25297], 80.00th=[28443], 90.00th=[34341], 95.00th=[41681], | 99.00th=[55313], 99.50th=[74974], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 132, max= 640, per=24.11%, avg=405.75, stdev=127.14, samples=28 iops : min= 8, max= 40, avg=24.79, stdev= 7.96, samples=28 write: IOPS=28, BW=460KiB/s (471kB/s)(6544KiB/14228msec); 0 zone resets clat (usec): min=1298, max=125922, avg=17535.54, stdev=15638.32 lat (usec): min=1299, max=125925, avg=17537.81, stdev=15638.54 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2671], 10.00th=[ 3752], 20.00th=[ 5080], | 30.00th=[ 7046], 40.00th=[ 10159], 50.00th=[ 12911], 60.00th=[ 16581], | 70.00th=[ 21890], 80.00th=[ 27395], 90.00th=[ 36963], 95.00th=[ 44303], | 99.00th=[ 76022], 99.50th=[ 80217], 99.90th=[126354], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 287, max= 800, per=26.05%, avg=461.43, stdev=120.74, samples=28 iops : min= 17, max= 50, avg=28.25, stdev= 7.61, samples=28 lat (usec) : 50=0.26%, 100=2.86%, 250=3.26%, 500=0.39% lat (msec) : 2=1.30%, 4=5.21%, 10=17.19%, 20=30.34%, 50=36.33% lat (msec) : 100=2.73%, 250=0.13% cpu : usr=0.17%, sys=25.02%, ctx=2088, 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=152008: Thu Apr 2 18:27:51 2026 read: IOPS=28, BW=453KiB/s (464kB/s)(6256KiB/13817msec) clat (usec): min=43, max=89250, avg=18453.72, stdev=12459.36 lat (usec): min=44, max=89252, avg=18454.89, stdev=12459.38 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 102], 10.00th=[ 184], 20.00th=[10028], | 30.00th=[12518], 40.00th=[15139], 50.00th=[17433], 60.00th=[19792], | 70.00th=[23200], 80.00th=[26608], 90.00th=[34341], 95.00th=[38536], | 99.00th=[65274], 99.50th=[70779], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 160, max= 768, per=27.17%, avg=457.22, stdev=134.03, samples=27 iops : min= 10, max= 48, avg=27.96, stdev= 8.43, samples=27 write: IOPS=27, BW=437KiB/s (447kB/s)(6032KiB/13817msec); 0 zone resets clat (usec): min=1511, max=109171, avg=17381.56, stdev=16027.76 lat (usec): min=1512, max=109172, avg=17383.87, stdev=16027.89 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 3064], 10.00th=[ 3785], 20.00th=[ 4752], | 30.00th=[ 6456], 40.00th=[ 8455], 50.00th=[ 12518], 60.00th=[ 16319], | 70.00th=[ 20579], 80.00th=[ 27919], 90.00th=[ 39060], 95.00th=[ 50594], | 99.00th=[ 71828], 99.50th=[ 88605], 99.90th=[109577], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 224, max= 701, per=24.40%, avg=432.11, stdev=121.36, samples=27 iops : min= 14, max= 43, avg=26.41, stdev= 7.55, samples=27 lat (usec) : 50=0.13%, 100=2.34%, 250=4.30%, 500=0.26%, 750=0.13% lat (msec) : 2=1.69%, 4=4.43%, 10=18.49%, 20=32.94%, 50=32.03% lat (msec) : 100=3.12%, 250=0.13% cpu : usr=0.17%, sys=25.28%, ctx=2064, 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=152009: Thu Apr 2 18:27:51 2026 read: IOPS=26, BW=424KiB/s (434kB/s)(6032KiB/14219msec) clat (usec): min=42, max=98212, avg=19269.77, stdev=14651.48 lat (usec): min=42, max=98213, avg=19270.97, stdev=14651.26 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 85], 10.00th=[ 112], 20.00th=[10159], | 30.00th=[13042], 40.00th=[14877], 50.00th=[17171], 60.00th=[20579], | 70.00th=[23725], 80.00th=[28705], 90.00th=[35914], 95.00th=[49021], | 99.00th=[69731], 99.50th=[74974], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 131, max= 604, per=25.20%, avg=424.04, stdev=111.98, samples=28 iops : min= 8, max= 37, avg=25.93, stdev= 6.97, samples=28 write: IOPS=27, BW=440KiB/s (451kB/s)(6256KiB/14219msec); 0 zone resets clat (usec): min=1260, max=123895, avg=17471.85, stdev=16702.48 lat (usec): min=1260, max=123899, avg=17474.15, stdev=16702.50 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 2737], 10.00th=[ 3359], 20.00th=[ 4752], | 30.00th=[ 6128], 40.00th=[ 8848], 50.00th=[ 12256], 60.00th=[ 16188], | 70.00th=[ 21365], 80.00th=[ 28181], 90.00th=[ 39060], 95.00th=[ 45876], | 99.00th=[ 81265], 99.50th=[121111], 99.90th=[124257], 99.95th=[124257], | 99.99th=[124257] bw ( KiB/s): min= 184, max= 736, per=24.95%, avg=441.89, stdev=130.92, samples=28 iops : min= 11, max= 46, avg=27.04, stdev= 8.18, samples=28 lat (usec) : 50=0.26%, 100=3.65%, 250=4.30%, 500=0.52%, 750=0.13% lat (msec) : 2=1.56%, 4=4.82%, 10=16.67%, 20=31.77%, 50=32.03% lat (msec) : 100=3.91%, 250=0.39% cpu : usr=0.13%, sys=24.57%, ctx=2118, 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=1683KiB/s (1724kB/s), 404KiB/s-453KiB/s (413kB/s-464kB/s), io=23.4MiB (24.5MB), run=13450-14228msec WRITE: bw=1771KiB/s (1814kB/s), 437KiB/s-473KiB/s (447kB/s-485kB/s), io=24.6MiB (25.8MB), run=13450-14228msec rand-rw: (groupid=0, jobs=1): err= 0: pid=152001: Thu Apr 2 18:28:03 2026 read: IOPS=14, BW=230KiB/s (235kB/s)(5920KiB/25785msec) clat (msec): min=4, max=153, avg=18.70, stdev=18.32 lat (msec): min=4, max=153, avg=18.71, stdev=18.31 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 41], 95.00th=[ 52], | 99.00th=[ 97], 99.50th=[ 104], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 63, max= 544, per=24.72%, avg=229.41, stdev=115.57, samples=51 iops : min= 3, max= 34, avg=13.82, stdev= 7.31, samples=51 write: IOPS=15, BW=247KiB/s (253kB/s)(6368KiB/25785msec); 0 zone resets clat (msec): min=19, max=175, avg=47.17, stdev=23.45 lat (msec): min=19, max=175, avg=47.17, stdev=23.45 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 33], 40.00th=[ 37], 50.00th=[ 41], 60.00th=[ 45], | 70.00th=[ 53], 80.00th=[ 62], 90.00th=[ 77], 95.00th=[ 95], | 99.00th=[ 144], 99.50th=[ 159], 99.90th=[ 176], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 63, max= 480, per=25.24%, avg=246.59, stdev=115.12, samples=51 iops : min= 3, max= 30, avg=14.90, stdev= 7.38, samples=51 lat (msec) : 10=16.67%, 20=19.01%, 50=44.92%, 100=17.06%, 250=2.34% cpu : usr=0.12%, sys=6.92%, ctx=1708, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152002: Thu Apr 2 18:28:03 2026 read: IOPS=13, BW=223KiB/s (229kB/s)(5744KiB/25725msec) clat (msec): min=4, max=157, avg=16.58, stdev=15.77 lat (msec): min=4, max=157, avg=16.58, stdev=15.77 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 22], 90.00th=[ 35], 95.00th=[ 50], | 99.00th=[ 74], 99.50th=[ 90], 99.90th=[ 159], 99.95th=[ 159], | 99.99th=[ 159] bw ( KiB/s): min= 31, max= 608, per=24.66%, avg=228.84, stdev=138.88, samples=50 iops : min= 1, max= 38, avg=13.80, stdev= 8.87, samples=50 write: IOPS=15, BW=254KiB/s (260kB/s)(6544KiB/25725msec); 0 zone resets clat (msec): min=19, max=190, avg=48.17, stdev=25.21 lat (msec): min=19, max=190, avg=48.17, stdev=25.21 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 42], 60.00th=[ 46], | 70.00th=[ 53], 80.00th=[ 63], 90.00th=[ 82], 95.00th=[ 102], | 99.00th=[ 129], 99.50th=[ 176], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 127, max= 480, per=25.99%, avg=253.90, stdev=109.25, samples=51 iops : min= 7, max= 30, avg=15.35, stdev= 7.00, samples=51 lat (msec) : 10=19.92%, 20=16.54%, 50=43.10%, 100=17.58%, 250=2.86% cpu : usr=0.14%, sys=6.62%, ctx=1605, 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=152003: Thu Apr 2 18:28:03 2026 read: IOPS=15, BW=246KiB/s (252kB/s)(6256KiB/25420msec) clat (msec): min=4, max=128, avg=18.39, stdev=18.47 lat (msec): min=4, max=128, avg=18.39, stdev=18.47 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 39], 95.00th=[ 59], | 99.00th=[ 102], 99.50th=[ 105], 99.90th=[ 129], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 31, max= 734, per=26.75%, avg=248.24, stdev=152.53, samples=50 iops : min= 1, max= 45, avg=15.00, stdev= 9.68, samples=50 write: IOPS=14, BW=237KiB/s (243kB/s)(6032KiB/25420msec); 0 zone resets clat (msec): min=19, max=228, avg=48.25, stdev=26.65 lat (msec): min=19, max=228, avg=48.25, stdev=26.65 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 31], | 30.00th=[ 33], 40.00th=[ 37], 50.00th=[ 41], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 61], 90.00th=[ 78], 95.00th=[ 111], | 99.00th=[ 140], 99.50th=[ 194], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 95, max= 448, per=24.10%, avg=235.42, stdev=108.33, samples=50 iops : min= 5, max= 28, avg=14.18, stdev= 6.94, samples=50 lat (msec) : 10=21.09%, 20=17.97%, 50=42.32%, 100=15.23%, 250=3.39% cpu : usr=0.08%, sys=7.15%, ctx=1631, 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=152004: Thu Apr 2 18:28:03 2026 read: IOPS=14, BW=237KiB/s (243kB/s)(6032KiB/25452msec) clat (msec): min=4, max=167, avg=17.78, stdev=17.08 lat (msec): min=4, max=167, avg=17.78, stdev=17.08 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 39], 95.00th=[ 53], | 99.00th=[ 80], 99.50th=[ 103], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 95, max= 448, per=25.33%, avg=235.06, stdev=115.59, samples=50 iops : min= 5, max= 28, avg=14.16, stdev= 7.41, samples=50 write: IOPS=15, BW=246KiB/s (252kB/s)(6256KiB/25452msec); 0 zone resets clat (msec): min=20, max=195, avg=47.76, stdev=24.02 lat (msec): min=20, max=195, avg=47.76, stdev=24.02 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 37], 50.00th=[ 41], 60.00th=[ 45], | 70.00th=[ 54], 80.00th=[ 62], 90.00th=[ 77], 95.00th=[ 99], | 99.00th=[ 134], 99.50th=[ 174], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 64, max= 479, per=25.00%, avg=244.22, stdev=111.46, samples=50 iops : min= 4, max= 29, avg=14.74, stdev= 7.09, samples=50 lat (msec) : 10=19.40%, 20=17.71%, 50=42.58%, 100=17.84%, 250=2.47% cpu : usr=0.12%, sys=6.96%, ctx=1638, 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=929KiB/s (951kB/s), 223KiB/s-246KiB/s (229kB/s-252kB/s), io=23.4MiB (24.5MB), run=25420-25785msec WRITE: bw=977KiB/s (1001kB/s), 237KiB/s-254KiB/s (243kB/s-260kB/s), io=24.6MiB (25.8MB), run=25420-25785msec 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=152020: Thu Apr 2 18:28:14 2026 read: IOPS=1, BW=1880KiB/s (1925kB/s)(7168KiB/3813msec) clat (usec): min=799, max=1356.7k, avg=324224.35, stdev=467997.66 lat (usec): min=800, max=1356.7k, avg=324226.02, stdev=467997.55 clat percentiles (usec): | 1.00th=[ 799], 5.00th=[ 799], 10.00th=[ 799], | 20.00th=[ 68682], 30.00th=[ 126354], 40.00th=[ 126354], | 50.00th=[ 168821], 60.00th=[ 204473], 70.00th=[ 204473], | 80.00th=[ 346031], 90.00th=[1350566], 95.00th=[1350566], | 99.00th=[1350566], 99.50th=[1350566], 99.90th=[1350566], | 99.95th=[1350566], 99.99th=[1350566] bw ( KiB/s): min= 2019, max= 4096, per=55.40%, avg=2447.40, stdev=921.66, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 write: IOPS=1, BW=1343KiB/s (1375kB/s)(5120KiB/3813msec); 0 zone resets clat (msec): min=101, max=460, avg=306.55, stdev=129.69 lat (msec): min=101, max=460, avg=306.63, stdev=129.70 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 2019, max= 4079, per=43.90%, avg=2715.33, stdev=1181.06, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=38.72%, ctx=1073, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152023: Thu Apr 2 18:28:14 2026 read: IOPS=0, BW=442KiB/s (452kB/s)(2048KiB/4635msec) clat (msec): min=280, max=287, avg=283.81, stdev= 5.18 lat (msec): min=280, max=287, avg=283.81, stdev= 5.18 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 288], 95.00th=[ 288], | 99.00th=[ 288], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 2011, max= 2019, per=45.61%, avg=2015.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2209KiB/s (2262kB/s)(10.0MiB/4635msec); 0 zone resets clat (msec): min=75, max=1424, avg=399.37, stdev=411.07 lat (msec): min=75, max=1424, avg=399.65, stdev=410.96 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 96], | 30.00th=[ 199], 40.00th=[ 211], 50.00th=[ 226], 60.00th=[ 243], | 70.00th=[ 292], 80.00th=[ 477], 90.00th=[ 751], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 1932, max= 6131, per=59.05%, avg=3652.20, stdev=2263.23, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 2.05, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=33.10%, ctx=350, 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=152025: Thu Apr 2 18:28:14 2026 read: IOPS=1, BW=1577KiB/s (1614kB/s)(6144KiB/3897msec) clat (usec): min=654, max=298315, avg=70140.16, stdev=115549.09 lat (usec): min=656, max=298316, avg=70141.45, stdev=115548.78 clat percentiles (usec): | 1.00th=[ 652], 5.00th=[ 652], 10.00th=[ 652], 20.00th=[ 668], | 30.00th=[ 668], 40.00th=[ 685], 50.00th=[ 685], 60.00th=[ 56886], | 70.00th=[ 63701], 80.00th=[ 63701], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 1910, max= 4096, per=76.09%, avg=3361.67, stdev=1257.21, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1577KiB/s (1614kB/s)(6144KiB/3897msec); 0 zone resets clat (msec): min=188, max=1615, avg=562.94, stdev=555.25 lat (msec): min=188, max=1615, avg=563.01, stdev=555.24 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 405], | 70.00th=[ 735], 80.00th=[ 735], 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= 1910, max= 2734, per=35.31%, avg=2183.75, stdev=372.36, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 750=25.00% lat (msec) : 100=16.67%, 250=25.00%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=29.70%, ctx=363, 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=152026: Thu Apr 2 18:28:14 2026 read: IOPS=1, BW=1313KiB/s (1344kB/s)(5120KiB/3900msec) clat (usec): min=702, max=196199, avg=96688.63, stdev=90974.26 lat (usec): min=703, max=196201, avg=96689.79, stdev=90974.34 clat percentiles (usec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 807], 40.00th=[ 807], 50.00th=[126354], 60.00th=[126354], | 70.00th=[158335], 80.00th=[158335], 90.00th=[196084], 95.00th=[196084], | 99.00th=[196084], 99.50th=[196084], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1838KiB/s (1882kB/s)(7168KiB/3900msec); 0 zone resets clat (msec): min=152, max=1420, avg=483.71, stdev=436.20 lat (msec): min=152, max=1420, avg=483.80, stdev=436.19 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 230], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 313], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 600], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 1376, max= 6144, per=46.36%, avg=2867.25, stdev=2203.27, samples=4 iops : min= 1, max= 6, avg= 2.25, stdev= 2.50, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=34.98%, ctx=413, 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=4419KiB/s (4525kB/s), 442KiB/s-1880KiB/s (452kB/s-1925kB/s), io=20.0MiB (20.0MB), run=3813-4635msec WRITE: bw=6186KiB/s (6334kB/s), 1343KiB/s-2209KiB/s (1375kB/s-2262kB/s), io=28.0MiB (29.4MB), run=3813-4635msec rand-rw: (groupid=0, jobs=1): err= 0: pid=152021: Thu Apr 2 18:28:14 2026 read: IOPS=1, BW=1500KiB/s (1536kB/s)(7168KiB/4779msec) clat (msec): min=25, max=1263, avg=543.20, stdev=521.93 lat (msec): min=25, max=1263, avg=543.20, stdev=521.93 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 26], 10.00th=[ 26], 20.00th=[ 27], | 30.00th=[ 83], 40.00th=[ 83], 50.00th=[ 567], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 1133], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 1910, max= 4087, per=58.80%, avg=2519.75, stdev=1046.66, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1071KiB/s (1097kB/s)(5120KiB/4779msec); 0 zone resets clat (msec): min=44, max=206, avg=117.54, stdev=61.44 lat (msec): min=44, max=206, avg=117.63, stdev=61.43 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 45], | 30.00th=[ 81], 40.00th=[ 81], 50.00th=[ 120], 60.00th=[ 120], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 207], 95.00th=[ 207], | 99.00th=[ 207], 99.50th=[ 207], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 1910, max= 1910, per=31.84%, avg=1910.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 50=25.00%, 100=16.67%, 250=25.00%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=7.26%, ctx=137, 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=152022: Thu Apr 2 18:28:14 2026 read: IOPS=0, BW=433KiB/s (444kB/s)(2048KiB/4727msec) clat (msec): min=80, max=169, avg=124.84, stdev=63.10 lat (msec): min=80, max=169, avg=124.84, stdev=63.10 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 81], 40.00th=[ 81], 50.00th=[ 81], 60.00th=[ 169], | 70.00th=[ 169], 80.00th=[ 169], 90.00th=[ 169], 95.00th=[ 169], | 99.00th=[ 169], 99.50th=[ 169], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 1400, max= 1910, per=38.62%, avg=1655.00, stdev=360.62, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2166KiB/s (2218kB/s)(10.0MiB/4727msec); 0 zone resets clat (msec): min=100, max=2001, avg=408.59, stdev=584.27 lat (msec): min=100, max=2001, avg=408.68, stdev=584.27 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 117], | 30.00th=[ 128], 40.00th=[ 129], 50.00th=[ 186], 60.00th=[ 215], | 70.00th=[ 255], 80.00th=[ 284], 90.00th=[ 676], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 1910, max= 4087, per=50.50%, avg=3029.75, stdev=1217.40, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=14.33%, ctx=245, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152024: Thu Apr 2 18:28:14 2026 read: IOPS=1, BW=1322KiB/s (1354kB/s)(6144KiB/4647msec) clat (msec): min=57, max=567, avg=224.29, stdev=214.80 lat (msec): min=57, max=567, avg=224.29, stdev=214.80 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 59], | 30.00th=[ 59], 40.00th=[ 80], 50.00th=[ 80], 60.00th=[ 176], | 70.00th=[ 409], 80.00th=[ 409], 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= 4079, max= 4087, per=95.29%, avg=4083.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1322KiB/s (1354kB/s)(6144KiB/4647msec); 0 zone resets clat (msec): min=86, max=1944, avg=485.87, stdev=717.72 lat (msec): min=86, max=1945, avg=485.97, stdev=717.74 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 247], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 1910, max= 2805, per=37.55%, avg=2252.67, stdev=482.94, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 100=33.33%, 250=33.33%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=11.13%, ctx=141, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152027: Thu Apr 2 18:28:14 2026 read: IOPS=1, BW=1119KiB/s (1146kB/s)(5120KiB/4576msec) clat (msec): min=54, max=280, avg=135.82, stdev=87.02 lat (msec): min=54, max=280, avg=135.82, stdev=87.02 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 55], | 30.00th=[ 88], 40.00th=[ 88], 50.00th=[ 117], 60.00th=[ 117], | 70.00th=[ 140], 80.00th=[ 140], 90.00th=[ 279], 95.00th=[ 279], | 99.00th=[ 279], 99.50th=[ 279], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 3820, max= 4079, per=92.17%, avg=3949.50, stdev=183.14, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1566KiB/s (1604kB/s)(7168KiB/4576msec); 0 zone resets clat (msec): min=141, max=1839, avg=553.20, stdev=597.48 lat (msec): min=141, max=1839, avg=553.32, stdev=597.48 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 182], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 347], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 592], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 1412, max= 4087, per=39.93%, avg=2395.25, stdev=1166.16, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=14.27%, ctx=274, 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=4285KiB/s (4388kB/s), 433KiB/s-1500KiB/s (444kB/s-1536kB/s), io=20.0MiB (20.0MB), run=4576-4779msec WRITE: bw=6000KiB/s (6144kB/s), 1071KiB/s-2166KiB/s (1097kB/s-2218kB/s), io=28.0MiB (29.4MB), run=4576-4779msec 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=152034: Thu Apr 2 18:28:24 2026 read: IOPS=1, BW=4637KiB/s (4748kB/s)(12.0MiB/2650msec) clat (msec): min=514, max=1544, avg=861.20, stdev=591.96 lat (msec): min=514, max=1544, avg=861.20, stdev=591.96 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8094, max= 8143, per=100.00%, avg=8118.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=28.20%, ctx=1254, 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=152035: Thu Apr 2 18:28:24 2026 read: IOPS=0, BW=1388KiB/s (1421kB/s)(4096KiB/2951msec) clat (nsec): min=388089k, max=388089k, avg=388088629.00, stdev= 0.00 lat (nsec): min=388093k, max=388093k, avg=388092722.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 5769, max= 5769, per=100.00%, avg=5769.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2776KiB/s (2843kB/s)(8192KiB/2951msec); 0 zone resets clat (msec): min=665, max=1875, avg=1270.67, stdev=855.88 lat (msec): min=665, max=1876, avg=1271.02, stdev=855.89 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 1871], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 8143, max= 8143, per=85.64%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.88%, ctx=419, 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=152036: Thu Apr 2 18:28:24 2026 write: IOPS=0, BW=3566KiB/s (3651kB/s)(12.0MiB/3446msec); 0 zone resets clat (msec): min=140, max=2545, avg=1141.18, stdev=1251.98 lat (msec): min=140, max=2545, avg=1141.47, stdev=1251.94 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 2534], 80.00th=[ 2534], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 8143, max= 8143, per=85.64%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=7.29%, ctx=121, 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=152038: Thu Apr 2 18:28:24 2026 write: IOPS=1, BW=4270KiB/s (4372kB/s)(12.0MiB/2878msec); 0 zone resets clat (msec): min=515, max=1760, avg=951.22, stdev=701.35 lat (msec): min=515, max=1760, avg=951.57, stdev=701.45 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8143, max= 8143, per=85.64%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.03%, sys=13.28%, ctx=103, 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=5552KiB/s (5685kB/s), 1388KiB/s-4637KiB/s (1421kB/s-4748kB/s), io=16.0MiB (16.8MB), run=2650-2951msec WRITE: bw=9509KiB/s (9737kB/s), 2776KiB/s-4270KiB/s (2843kB/s-4372kB/s), io=32.0MiB (33.6MB), run=2878-3446msec rand-rw: (groupid=0, jobs=1): err= 0: pid=152037: Thu Apr 2 18:28:24 2026 read: IOPS=0, BW=4025KiB/s (4121kB/s)(12.0MiB/3053msec) clat (msec): min=512, max=1680, avg=990.82, stdev=612.30 lat (msec): min=512, max=1680, avg=990.82, stdev=612.30 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.93%, ctx=90, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152039: Thu Apr 2 18:28:24 2026 read: IOPS=0, BW=1195KiB/s (1224kB/s)(4096KiB/3427msec) clat (nsec): min=1897.5M, max=1897.5M, avg=1897454716.00, stdev= 0.00 lat (nsec): min=1897.5M, max=1897.5M, avg=1897456088.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1905], 5.00th=[ 1905], 10.00th=[ 1905], 20.00th=[ 1905], | 30.00th=[ 1905], 40.00th=[ 1905], 50.00th=[ 1905], 60.00th=[ 1905], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 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=2390KiB/s (2448kB/s)(8192KiB/3427msec); 0 zone resets clat (msec): min=621, max=835, avg=728.58, stdev=151.29 lat (msec): min=622, max=835, avg=729.02, stdev=151.16 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 8047, max= 8047, per=84.16%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.06%, sys=7.79%, ctx=108, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152040: Thu Apr 2 18:28:24 2026 write: IOPS=0, BW=3764KiB/s (3854kB/s)(12.0MiB/3265msec); 0 zone resets clat (msec): min=167, max=2151, avg=1059.10, stdev=1007.33 lat (msec): min=167, max=2151, avg=1059.43, stdev=1007.30 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8047, max= 8192, per=84.92%, avg=8119.50, stdev=102.53, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=10.54%, ctx=99, 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=152041: Thu Apr 2 18:28:24 2026 write: IOPS=0, BW=4000KiB/s (4096kB/s)(12.0MiB/3072msec); 0 zone resets clat (msec): min=388, max=1937, avg=1000.97, stdev=823.60 lat (msec): min=388, max=1937, avg=1001.31, stdev=823.62 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 1938], 80.00th=[ 1938], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 8192, max= 8192, per=85.68%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.03%, ctx=106, 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=4781KiB/s (4896kB/s), 1195KiB/s-4025KiB/s (1224kB/s-4121kB/s), io=16.0MiB (16.8MB), run=3053-3427msec WRITE: bw=9562KiB/s (9791kB/s), 2390KiB/s-4000KiB/s (2448kB/s-4096kB/s), io=32.0MiB (33.6MB), run=3072-3427msec