== sanity test 398b: DIO and buffer IO race ============== 17:13:31 (1780089211) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.33688 s, 15.1 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=185351: Fri May 29 17:14:36 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(5992KiB/54502msec) clat (usec): min=34, max=632706, avg=20115.25, stdev=19209.65 lat (usec): min=35, max=632707, avg=20116.34, stdev=19209.79 clat percentiles (usec): | 1.00th=[ 88], 5.00th=[ 7701], 10.00th=[ 9241], 20.00th=[ 11469], | 30.00th=[ 13566], 40.00th=[ 15533], 50.00th=[ 17957], 60.00th=[ 20055], | 70.00th=[ 22938], 80.00th=[ 26608], 90.00th=[ 31851], 95.00th=[ 37487], | 99.00th=[ 62653], 99.50th=[ 72877], 99.90th=[102237], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 176, per=24.93%, avg=109.45, stdev=28.50, samples=108 iops : min= 1, max= 44, avg=26.92, stdev= 7.20, samples=108 write: IOPS=28, BW=116KiB/s (118kB/s)(6296KiB/54502msec); 0 zone resets clat (usec): min=687, max=92199, avg=15340.84, stdev=12732.58 lat (usec): min=688, max=92200, avg=15341.85, stdev=12732.57 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1975], 10.00th=[ 2704], 20.00th=[ 3687], | 30.00th=[ 6128], 40.00th=[ 9896], 50.00th=[12780], 60.00th=[15664], | 70.00th=[19268], 80.00th=[24249], 90.00th=[32113], 95.00th=[40109], | 99.00th=[58459], 99.50th=[65799], 99.90th=[77071], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 39, max= 208, per=25.30%, avg=116.11, stdev=33.99, samples=107 iops : min= 9, max= 52, avg=28.58, stdev= 8.50, samples=107 lat (usec) : 50=0.07%, 100=0.49%, 250=0.49%, 750=0.07%, 1000=0.36% lat (msec) : 2=2.25%, 4=8.59%, 10=14.36%, 20=39.16%, 50=32.13% lat (msec) : 100=1.95%, 250=0.07%, 750=0.03% cpu : usr=0.11%, sys=19.08%, ctx=8900, 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=185354: Fri May 29 17:14:36 2026 read: IOPS=27, BW=109KiB/s (111kB/s)(5940KiB/54664msec) clat (usec): min=42, max=607865, avg=19952.57, stdev=18507.66 lat (usec): min=43, max=607866, avg=19954.12, stdev=18508.09 clat percentiles (usec): | 1.00th=[ 108], 5.00th=[ 7767], 10.00th=[ 9110], 20.00th=[ 11338], | 30.00th=[ 13173], 40.00th=[ 15533], 50.00th=[ 17695], 60.00th=[ 20317], | 70.00th=[ 23200], 80.00th=[ 26608], 90.00th=[ 32375], 95.00th=[ 38536], | 99.00th=[ 53216], 99.50th=[ 65274], 99.90th=[102237], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 7, max= 176, per=24.90%, avg=109.32, stdev=30.08, samples=107 iops : min= 1, max= 44, avg=26.88, stdev= 7.59, samples=107 write: IOPS=29, BW=116KiB/s (119kB/s)(6348KiB/54664msec); 0 zone resets clat (usec): min=713, max=120683, avg=15628.00, stdev=13456.01 lat (usec): min=714, max=120685, avg=15629.19, stdev=13456.17 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1827], 10.00th=[ 2638], 20.00th=[ 3621], | 30.00th=[ 6456], 40.00th=[ 9896], 50.00th=[ 12518], 60.00th=[ 15664], | 70.00th=[ 19530], 80.00th=[ 25560], 90.00th=[ 33424], 95.00th=[ 40109], | 99.00th=[ 57934], 99.50th=[ 63701], 99.90th=[112722], 99.95th=[121111], | 99.99th=[121111] bw ( KiB/s): min= 31, max= 192, per=25.37%, avg=116.47, stdev=33.99, samples=107 iops : min= 7, max= 48, avg=28.67, stdev= 8.58, samples=107 lat (usec) : 50=0.03%, 100=0.36%, 250=0.68%, 750=0.03%, 1000=0.39% lat (msec) : 2=2.47%, 4=8.76%, 10=14.97%, 20=37.34%, 50=33.37% lat (msec) : 100=1.43%, 250=0.13%, 750=0.03% cpu : usr=0.14%, sys=19.05%, ctx=8766, 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=185356: Fri May 29 17:14:36 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(6028KiB/54640msec) clat (usec): min=32, max=111259, avg=19370.35, stdev=10437.05 lat (usec): min=33, max=111261, avg=19371.33, stdev=10437.07 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 7570], 10.00th=[ 9241], 20.00th=[ 11207], | 30.00th=[ 13304], 40.00th=[ 15401], 50.00th=[ 17695], 60.00th=[ 20055], | 70.00th=[ 22676], 80.00th=[ 26084], 90.00th=[ 31589], 95.00th=[ 36963], | 99.00th=[ 53740], 99.50th=[ 60031], 99.90th=[ 85459], 99.95th=[111674], | 99.99th=[111674] bw ( KiB/s): min= 39, max= 198, per=25.27%, avg=110.94, stdev=28.12, samples=107 iops : min= 9, max= 49, avg=27.29, stdev= 7.12, samples=107 write: IOPS=28, BW=115KiB/s (117kB/s)(6260KiB/54640msec); 0 zone resets clat (usec): min=819, max=596401, avg=16123.04, stdev=19631.45 lat (usec): min=819, max=596402, avg=16124.21, stdev=19631.47 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 2057], 10.00th=[ 2671], 20.00th=[ 3621], | 30.00th=[ 6325], 40.00th=[ 10028], 50.00th=[ 12911], 60.00th=[ 15664], | 70.00th=[ 19530], 80.00th=[ 26084], 90.00th=[ 33817], 95.00th=[ 41157], | 99.00th=[ 55837], 99.50th=[ 69731], 99.90th=[ 82314], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 7, max= 192, per=24.78%, avg=113.75, stdev=34.23, samples=108 iops : min= 1, max= 48, avg=27.99, stdev= 8.59, samples=108 lat (usec) : 50=0.07%, 100=0.59%, 250=0.59%, 1000=0.36% lat (msec) : 2=2.08%, 4=9.18%, 10=13.93%, 20=38.67%, 50=32.71% lat (msec) : 100=1.76%, 250=0.03%, 750=0.03% cpu : usr=0.11%, sys=19.09%, ctx=8695, 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=185358: Fri May 29 17:14:36 2026 read: IOPS=28, BW=113KiB/s (116kB/s)(6052KiB/53601msec) clat (usec): min=41, max=79138, avg=19417.56, stdev=10470.23 lat (usec): min=41, max=79138, avg=19418.47, stdev=10470.31 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 7439], 10.00th=[ 8979], 20.00th=[11338], | 30.00th=[13042], 40.00th=[15270], 50.00th=[17695], 60.00th=[20055], | 70.00th=[22938], 80.00th=[26608], 90.00th=[32113], 95.00th=[36963], | 99.00th=[55313], 99.50th=[63701], 99.90th=[73925], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 47, max= 176, per=25.87%, avg=113.55, stdev=27.15, samples=105 iops : min= 11, max= 44, avg=27.93, stdev= 6.84, samples=105 write: IOPS=29, BW=116KiB/s (119kB/s)(6236KiB/53601msec); 0 zone resets clat (usec): min=747, max=580319, avg=15401.26, stdev=19085.69 lat (usec): min=748, max=580320, avg=15402.34, stdev=19085.76 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1926], 10.00th=[ 2638], 20.00th=[ 3523], | 30.00th=[ 5866], 40.00th=[ 9634], 50.00th=[ 12256], 60.00th=[ 15270], | 70.00th=[ 18744], 80.00th=[ 23725], 90.00th=[ 32637], 95.00th=[ 41157], | 99.00th=[ 57934], 99.50th=[ 65274], 99.90th=[ 84411], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 14, max= 207, per=25.29%, avg=116.08, stdev=34.46, samples=106 iops : min= 3, max= 51, avg=28.57, stdev= 8.67, samples=106 lat (usec) : 50=0.23%, 100=0.46%, 250=0.52%, 750=0.03%, 1000=0.23% lat (msec) : 2=2.44%, 4=9.11%, 10=15.33%, 20=37.76%, 50=32.00% lat (msec) : 100=1.86%, 750=0.03% cpu : usr=0.12%, sys=19.25%, ctx=8638, 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=439KiB/s (450kB/s), 109KiB/s-113KiB/s (111kB/s-116kB/s), io=23.4MiB (24.6MB), run=53601-54664msec WRITE: bw=460KiB/s (471kB/s), 115KiB/s-116KiB/s (117kB/s-119kB/s), io=24.6MiB (25.7MB), run=53601-54664msec rand-rw: (groupid=0, jobs=1): err= 0: pid=185352: Fri May 29 17:14:47 2026 read: IOPS=22, BW=91.7KiB/s (93.9kB/s)(5992KiB/65369msec) clat (msec): min=3, max=641, avg=18.13, stdev=21.67 lat (msec): min=3, max=641, avg=18.13, stdev=21.67 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 39], 95.00th=[ 48], | 99.00th=[ 74], 99.50th=[ 78], 99.90th=[ 142], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 8, max= 296, per=25.16%, avg=91.84, stdev=58.31, samples=129 iops : min= 2, max= 74, avg=22.59, stdev=14.69, samples=129 write: IOPS=24, BW=96.3KiB/s (98.6kB/s)(6296KiB/65369msec); 0 zone resets clat (msec): min=5, max=137, avg=24.14, stdev=17.01 lat (msec): min=5, max=137, avg=24.14, stdev=17.01 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 57], | 99.00th=[ 84], 99.50th=[ 102], 99.90th=[ 132], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 15, max= 288, per=25.23%, avg=96.61, stdev=57.45, samples=129 iops : min= 3, max= 72, avg=23.78, stdev=14.47, samples=129 lat (msec) : 4=0.55%, 10=25.94%, 20=35.48%, 50=32.32%, 100=5.37% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.10%, sys=10.20%, ctx=5944, 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=185353: Fri May 29 17:14:47 2026 read: IOPS=22, BW=90.5KiB/s (92.7kB/s)(5940KiB/65607msec) clat (msec): min=3, max=593, avg=18.31, stdev=21.15 lat (msec): min=3, max=593, avg=18.31, stdev=21.15 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 37], 95.00th=[ 50], | 99.00th=[ 72], 99.50th=[ 84], 99.90th=[ 142], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 15, max= 304, per=24.80%, avg=90.53, stdev=59.96, samples=129 iops : min= 3, max= 76, avg=22.26, stdev=15.13, samples=129 write: IOPS=24, BW=96.8KiB/s (99.1kB/s)(6348KiB/65607msec); 0 zone resets clat (msec): min=4, max=122, avg=24.07, stdev=16.66 lat (msec): min=4, max=122, avg=24.07, stdev=16.66 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 58], | 99.00th=[ 81], 99.50th=[ 93], 99.90th=[ 110], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 24, max= 280, per=25.13%, avg=96.24, stdev=56.64, samples=129 iops : min= 6, max= 70, avg=23.69, stdev=14.26, samples=129 lat (msec) : 4=0.72%, 10=25.36%, 20=34.86%, 50=32.94%, 100=5.86% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.08%, sys=10.11%, ctx=5903, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185355: Fri May 29 17:14:47 2026 read: IOPS=23, BW=92.4KiB/s (94.6kB/s)(6028KiB/65225msec) clat (msec): min=3, max=132, avg=18.07, stdev=15.00 lat (msec): min=3, max=132, avg=18.07, stdev=15.00 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 39], 95.00th=[ 50], | 99.00th=[ 75], 99.50th=[ 81], 99.90th=[ 103], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 16, max= 352, per=25.36%, avg=92.56, stdev=56.87, samples=128 iops : min= 4, max= 88, avg=22.77, stdev=14.33, samples=128 write: IOPS=23, BW=95.0KiB/s (98.3kB/s)(6260KiB/65225msec); 0 zone resets clat (msec): min=4, max=595, avg=24.13, stdev=21.56 lat (msec): min=4, max=595, avg=24.13, stdev=21.56 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 79], 99.50th=[ 82], 99.90th=[ 138], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 16, max= 296, per=25.04%, avg=95.92, stdev=57.54, samples=128 iops : min= 4, max= 74, avg=23.61, stdev=14.50, samples=128 lat (msec) : 4=0.55%, 10=25.85%, 20=35.51%, 50=31.54%, 100=6.38% lat (msec) : 250=0.13%, 750=0.03% cpu : usr=0.09%, sys=10.13%, ctx=5908, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185357: Fri May 29 17:14:47 2026 read: IOPS=23, BW=92.7KiB/s (94.9kB/s)(6052KiB/65296msec) clat (msec): min=3, max=108, avg=17.79, stdev=14.22 lat (msec): min=3, max=108, avg=17.79, stdev=14.22 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 27], 90.00th=[ 37], 95.00th=[ 47], | 99.00th=[ 66], 99.50th=[ 83], 99.90th=[ 104], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 16, max= 328, per=25.53%, avg=93.19, stdev=57.91, samples=129 iops : min= 4, max= 82, avg=22.93, stdev=14.60, samples=129 write: IOPS=23, BW=95.5KiB/s (97.8kB/s)(6236KiB/65296msec); 0 zone resets clat (msec): min=5, max=588, avg=24.48, stdev=21.85 lat (msec): min=5, max=588, avg=24.49, stdev=21.85 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 56], | 99.00th=[ 83], 99.50th=[ 93], 99.90th=[ 136], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 23, max= 296, per=25.05%, avg=95.94, stdev=56.18, samples=129 iops : min= 5, max= 74, avg=23.61, stdev=14.15, samples=129 lat (msec) : 4=0.72%, 10=24.32%, 20=36.49%, 50=32.42%, 100=5.83% lat (msec) : 250=0.20%, 750=0.03% cpu : usr=0.09%, sys=10.16%, ctx=5820, 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=366KiB/s (375kB/s), 90.5KiB/s-92.7KiB/s (92.7kB/s-94.9kB/s), io=23.4MiB (24.6MB), run=65225-65607msec WRITE: bw=383KiB/s (392kB/s), 95.5KiB/s-96.8KiB/s (97.8kB/s-99.1kB/s), io=24.6MiB (25.7MB), run=65225-65607msec 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=185390: Fri May 29 17:15:08 2026 read: IOPS=25, BW=410KiB/s (420kB/s)(5920KiB/14429msec) clat (usec): min=58, max=85309, avg=19947.49, stdev=10976.96 lat (usec): min=59, max=85311, avg=19948.28, stdev=10976.96 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 117], 10.00th=[ 9896], 20.00th=[12649], | 30.00th=[14615], 40.00th=[16450], 50.00th=[17957], 60.00th=[20579], | 70.00th=[23987], 80.00th=[27132], 90.00th=[32113], 95.00th=[38011], | 99.00th=[55837], 99.50th=[64750], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 288, max= 638, per=24.81%, avg=405.07, stdev=88.91, samples=28 iops : min= 18, max= 39, avg=24.86, stdev= 5.49, samples=28 write: IOPS=27, BW=441KiB/s (452kB/s)(6368KiB/14429msec); 0 zone resets clat (usec): min=1681, max=60213, avg=17643.87, stdev=12494.79 lat (usec): min=1683, max=60215, avg=17645.26, stdev=12494.81 clat percentiles (usec): | 1.00th=[ 2180], 5.00th=[ 3752], 10.00th=[ 4555], 20.00th=[ 6390], | 30.00th=[ 9110], 40.00th=[11731], 50.00th=[14615], 60.00th=[17433], | 70.00th=[21627], 80.00th=[26870], 90.00th=[36439], 95.00th=[43254], | 99.00th=[54789], 99.50th=[58459], 99.90th=[60031], 99.95th=[60031], | 99.99th=[60031] bw ( KiB/s): min= 223, max= 608, per=25.68%, avg=441.14, stdev=97.59, samples=28 iops : min= 13, max= 38, avg=27.11, stdev= 6.22, samples=28 lat (usec) : 100=1.17%, 250=2.08%, 500=0.13% lat (msec) : 2=0.26%, 4=3.12%, 10=14.58%, 20=41.02%, 50=35.68% lat (msec) : 100=1.95% cpu : usr=0.09%, sys=23.21%, ctx=2733, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185391: Fri May 29 17:15:08 2026 read: IOPS=24, BW=395KiB/s (404kB/s)(5744KiB/14551msec) clat (usec): min=54, max=69878, avg=20726.29, stdev=11058.18 lat (usec): min=55, max=69879, avg=20727.09, stdev=11058.22 clat percentiles (usec): | 1.00th=[ 88], 5.00th=[ 8029], 10.00th=[10028], 20.00th=[12649], | 30.00th=[14615], 40.00th=[16581], 50.00th=[19268], 60.00th=[21365], | 70.00th=[24249], 80.00th=[27132], 90.00th=[33424], 95.00th=[41157], | 99.00th=[59507], 99.50th=[69731], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 234, max= 542, per=24.11%, avg=393.71, stdev=80.86, samples=28 iops : min= 14, max= 33, avg=24.14, stdev= 5.07, samples=28 write: IOPS=28, BW=450KiB/s (461kB/s)(6544KiB/14551msec); 0 zone resets clat (usec): min=1510, max=71547, avg=17103.27, stdev=11915.72 lat (usec): min=1511, max=71549, avg=17104.98, stdev=11915.81 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 3720], 10.00th=[ 4424], 20.00th=[ 5997], | 30.00th=[ 9503], 40.00th=[12125], 50.00th=[14484], 60.00th=[17695], | 70.00th=[20579], 80.00th=[25297], 90.00th=[33817], 95.00th=[40109], | 99.00th=[55313], 99.50th=[63701], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 255, max= 798, per=25.74%, avg=442.29, stdev=127.14, samples=28 iops : min= 15, max= 49, avg=27.18, stdev= 8.06, samples=28 lat (usec) : 100=0.78%, 250=1.30% lat (msec) : 2=0.65%, 4=2.99%, 10=15.89%, 20=39.71%, 50=36.85% lat (msec) : 100=1.82% cpu : usr=0.11%, sys=23.45%, ctx=2702, 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=185392: Fri May 29 17:15:08 2026 read: IOPS=26, BW=427KiB/s (437kB/s)(6256KiB/14662msec) clat (usec): min=37, max=72283, avg=20162.68, stdev=10431.62 lat (usec): min=38, max=72283, avg=20164.23, stdev=10432.04 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 137], 10.00th=[ 9634], 20.00th=[12518], | 30.00th=[14746], 40.00th=[16581], 50.00th=[19268], 60.00th=[21890], | 70.00th=[24511], 80.00th=[27395], 90.00th=[32637], 95.00th=[38011], | 99.00th=[51643], 99.50th=[60031], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 256, max= 640, per=26.02%, avg=424.96, stdev=87.87, samples=28 iops : min= 16, max= 40, avg=26.11, stdev= 5.56, samples=28 write: IOPS=25, BW=411KiB/s (421kB/s)(6032KiB/14662msec); 0 zone resets clat (usec): min=1118, max=83614, avg=17753.49, stdev=12475.23 lat (usec): min=1119, max=83615, avg=17754.92, stdev=12475.23 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 3654], 10.00th=[ 4752], 20.00th=[ 6325], | 30.00th=[ 9765], 40.00th=[11863], 50.00th=[15139], 60.00th=[18744], | 70.00th=[21890], 80.00th=[26084], 90.00th=[34866], 95.00th=[42730], | 99.00th=[55313], 99.50th=[61604], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 190, max= 640, per=23.06%, avg=396.25, stdev=114.44, samples=28 iops : min= 11, max= 40, avg=24.32, stdev= 7.21, samples=28 lat (usec) : 50=0.13%, 100=1.04%, 250=1.82%, 500=0.13% lat (msec) : 2=0.65%, 4=2.47%, 10=15.36%, 20=37.24%, 50=39.19% lat (msec) : 100=1.95% cpu : usr=0.04%, sys=23.02%, ctx=2876, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185393: Fri May 29 17:15:08 2026 read: IOPS=26, BW=428KiB/s (439kB/s)(6032KiB/14080msec) clat (usec): min=60, max=81672, avg=19357.09, stdev=11063.35 lat (usec): min=61, max=81673, avg=19357.90, stdev=11063.35 clat percentiles (usec): | 1.00th=[ 72], 5.00th=[ 112], 10.00th=[ 8586], 20.00th=[11863], | 30.00th=[14091], 40.00th=[16057], 50.00th=[18482], 60.00th=[20841], | 70.00th=[23725], 80.00th=[27395], 90.00th=[31851], 95.00th=[37487], | 99.00th=[61604], 99.50th=[65799], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 286, max= 573, per=25.92%, avg=423.26, stdev=85.51, samples=27 iops : min= 17, max= 35, avg=26.00, stdev= 5.48, samples=27 write: IOPS=27, BW=444KiB/s (455kB/s)(6256KiB/14080msec); 0 zone resets clat (usec): min=1184, max=74838, avg=17162.33, stdev=12100.30 lat (usec): min=1185, max=74839, avg=17164.04, stdev=12100.11 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 3261], 10.00th=[ 4424], 20.00th=[ 5932], | 30.00th=[ 8586], 40.00th=[11207], 50.00th=[13960], 60.00th=[18220], | 70.00th=[22938], 80.00th=[26870], 90.00th=[32900], 95.00th=[40633], | 99.00th=[53740], 99.50th=[64226], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 312, max= 637, per=25.72%, avg=441.81, stdev=89.21, samples=27 iops : min= 19, max= 39, avg=27.19, stdev= 5.48, samples=27 lat (usec) : 100=1.56%, 250=2.73%, 500=0.13% lat (msec) : 2=0.78%, 4=3.26%, 10=15.36%, 20=36.72%, 50=37.76% lat (msec) : 100=1.69% cpu : usr=0.13%, sys=23.13%, ctx=2772, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1634KiB/s (1673kB/s), 395KiB/s-428KiB/s (404kB/s-439kB/s), io=23.4MiB (24.5MB), run=14080-14662msec WRITE: bw=1719KiB/s (1760kB/s), 411KiB/s-450KiB/s (421kB/s-461kB/s), io=24.6MiB (25.8MB), run=14080-14662msec rand-rw: (groupid=0, jobs=1): err= 0: pid=185385: Fri May 29 17:15:10 2026 read: IOPS=21, BW=347KiB/s (356kB/s)(5920KiB/17050msec) clat (usec): min=4117, max=72742, avg=18076.58, stdev=13101.96 lat (usec): min=4118, max=72743, avg=18077.30, stdev=13101.94 clat percentiles (usec): | 1.00th=[ 4948], 5.00th=[ 6063], 10.00th=[ 7111], 20.00th=[ 8586], | 30.00th=[10421], 40.00th=[11863], 50.00th=[13435], 60.00th=[15401], | 70.00th=[18482], 80.00th=[24249], 90.00th=[38536], 95.00th=[46400], | 99.00th=[64226], 99.50th=[70779], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 160, max= 736, per=24.06%, avg=335.42, stdev=159.89, samples=33 iops : min= 10, max= 46, avg=20.52, stdev=10.04, samples=33 write: IOPS=23, BW=373KiB/s (382kB/s)(6368KiB/17050msec); 0 zone resets clat (msec): min=6, max=110, avg=25.98, stdev=15.63 lat (msec): min=6, max=110, avg=25.98, stdev=15.63 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 40], 90.00th=[ 48], 95.00th=[ 52], | 99.00th=[ 86], 99.50th=[ 92], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 127, max= 832, per=24.81%, avg=363.67, stdev=149.59, samples=33 iops : min= 7, max= 52, avg=22.27, stdev= 9.48, samples=33 lat (msec) : 10=16.80%, 20=42.71%, 50=35.42%, 100=4.95%, 250=0.13% cpu : usr=0.11%, sys=11.22%, ctx=1574, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185386: Fri May 29 17:15:10 2026 read: IOPS=20, BW=334KiB/s (342kB/s)(5744KiB/17178msec) clat (usec): min=3018, max=90987, avg=18953.38, stdev=14395.48 lat (usec): min=3019, max=90987, avg=18954.07, stdev=14395.44 clat percentiles (usec): | 1.00th=[ 3982], 5.00th=[ 5800], 10.00th=[ 7111], 20.00th=[ 8717], | 30.00th=[10159], 40.00th=[11731], 50.00th=[13698], 60.00th=[15926], | 70.00th=[19792], 80.00th=[28443], 90.00th=[40109], 95.00th=[51643], | 99.00th=[72877], 99.50th=[76022], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 95, max= 704, per=23.81%, avg=331.97, stdev=158.06, samples=34 iops : min= 5, max= 44, avg=20.29, stdev=10.00, samples=34 write: IOPS=23, BW=381KiB/s (390kB/s)(6544KiB/17178msec); 0 zone resets clat (msec): min=5, max=126, avg=25.26, stdev=15.44 lat (msec): min=5, max=126, avg=25.26, stdev=15.44 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 56], | 99.00th=[ 70], 99.50th=[ 82], 99.90th=[ 127], 99.95th=[ 127], | 99.99th=[ 127] bw ( KiB/s): min= 160, max= 1024, per=25.84%, avg=378.76, stdev=192.05, samples=34 iops : min= 10, max= 64, avg=23.24, stdev=12.12, samples=34 lat (msec) : 4=0.65%, 10=16.54%, 20=40.76%, 50=35.55%, 100=6.38% lat (msec) : 250=0.13% cpu : usr=0.06%, sys=11.13%, ctx=1584, 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=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=185387: Fri May 29 17:15:10 2026 read: IOPS=23, BW=369KiB/s (378kB/s)(6256KiB/16958msec) clat (usec): min=4290, max=87994, avg=19082.95, stdev=13663.77 lat (usec): min=4291, max=87994, avg=19083.90, stdev=13663.70 clat percentiles (usec): | 1.00th=[ 5080], 5.00th=[ 6456], 10.00th=[ 7504], 20.00th=[ 9110], | 30.00th=[10421], 40.00th=[11731], 50.00th=[13960], 60.00th=[16712], | 70.00th=[21365], 80.00th=[27395], 90.00th=[37487], 95.00th=[49546], | 99.00th=[65274], 99.50th=[70779], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 159, max= 960, per=26.24%, avg=365.79, stdev=184.46, samples=33 iops : min= 9, max= 60, avg=22.39, stdev=11.59, samples=33 write: IOPS=22, BW=356KiB/s (364kB/s)(6032KiB/16958msec); 0 zone resets clat (msec): min=6, max=130, avg=25.04, stdev=14.86 lat (msec): min=6, max=130, avg=25.05, stdev=14.86 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 55], | 99.00th=[ 70], 99.50th=[ 85], 99.90th=[ 131], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 191, max= 896, per=23.57%, avg=345.58, stdev=153.95, samples=33 iops : min= 11, max= 56, avg=21.15, stdev= 9.69, samples=33 lat (msec) : 10=18.10%, 20=38.54%, 50=37.76%, 100=5.47%, 250=0.13% cpu : usr=0.08%, sys=11.49%, ctx=1593, 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=185388: Fri May 29 17:15:10 2026 read: IOPS=22, BW=354KiB/s (362kB/s)(6032KiB/17062msec) clat (usec): min=4034, max=97930, avg=19043.36, stdev=14659.38 lat (usec): min=4034, max=97930, avg=19044.08, stdev=14659.33 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 5932], 10.00th=[ 7111], 20.00th=[ 8717], | 30.00th=[10159], 40.00th=[11863], 50.00th=[13698], 60.00th=[15795], | 70.00th=[20579], 80.00th=[27395], 90.00th=[40109], 95.00th=[51119], | 99.00th=[68682], 99.50th=[77071], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 128, max= 864, per=24.60%, avg=342.88, stdev=170.07, samples=33 iops : min= 8, max= 54, avg=20.97, stdev=10.63, samples=33 write: IOPS=22, BW=367KiB/s (375kB/s)(6256KiB/17062msec); 0 zone resets clat (usec): min=5262, max=88616, avg=25120.57, stdev=14698.30 lat (usec): min=5264, max=88618, avg=25122.18, stdev=14698.30 clat percentiles (usec): | 1.00th=[ 7832], 5.00th=[ 9634], 10.00th=[10683], 20.00th=[12649], | 30.00th=[15270], 40.00th=[17433], 50.00th=[20317], 60.00th=[24511], | 70.00th=[30802], 80.00th=[35914], 90.00th=[44827], 95.00th=[55313], | 99.00th=[74974], 99.50th=[84411], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 159, max= 736, per=24.42%, avg=358.06, stdev=147.60, samples=33 iops : min= 9, max= 46, avg=21.91, stdev= 9.37, samples=33 lat (msec) : 10=17.58%, 20=41.41%, 50=34.77%, 100=6.25% cpu : usr=0.13%, sys=11.09%, ctx=1570, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1394KiB/s (1428kB/s), 334KiB/s-369KiB/s (342kB/s-378kB/s), io=23.4MiB (24.5MB), run=16958-17178msec WRITE: bw=1467KiB/s (1502kB/s), 356KiB/s-381KiB/s (364kB/s-390kB/s), io=24.6MiB (25.8MB), run=16958-17178msec 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=185400: Fri May 29 17:15:18 2026 read: IOPS=4, BW=4488KiB/s (4596kB/s)(7168KiB/1597msec) clat (msec): min=41, max=111, avg=78.45, stdev=27.44 lat (msec): min=41, max=111, avg=78.45, stdev=27.44 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 55], | 30.00th=[ 65], 40.00th=[ 65], 50.00th=[ 73], 60.00th=[ 94], | 70.00th=[ 94], 80.00th=[ 111], 90.00th=[ 112], 95.00th=[ 112], | 99.00th=[ 112], 99.50th=[ 112], 99.90th=[ 112], 99.95th=[ 112], | 99.99th=[ 112] bw ( KiB/s): min= 2003, max= 8812, per=72.99%, avg=5407.50, stdev=4814.69, samples=2 iops : min= 1, max= 8, avg= 4.50, stdev= 4.95, samples=2 write: IOPS=3, BW=3206KiB/s (3283kB/s)(5120KiB/1597msec); 0 zone resets clat (msec): min=66, max=419, avg=198.55, stdev=154.22 lat (msec): min=66, max=419, avg=198.65, stdev=154.23 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 67], | 30.00th=[ 96], 40.00th=[ 96], 50.00th=[ 110], 60.00th=[ 110], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 1762, max= 4096, per=31.70%, avg=3288.33, stdev=1322.59, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (msec) : 50=8.33%, 100=50.00%, 250=25.00%, 500=16.67% cpu : usr=0.13%, sys=22.24%, ctx=106, 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=185401: Fri May 29 17:15:18 2026 read: IOPS=0, BW=741KiB/s (759kB/s)(2048KiB/2764msec) clat (msec): min=53, max=649, avg=351.41, stdev=421.29 lat (msec): min=53, max=649, avg=351.41, stdev=421.29 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 54], 40.00th=[ 54], 50.00th=[ 54], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1750, max= 2003, per=25.33%, avg=1876.50, stdev=178.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3705KiB/s (3794kB/s)(10.0MiB/2764msec); 0 zone resets clat (msec): min=76, max=471, avg=204.84, stdev=122.00 lat (msec): min=76, max=471, avg=204.95, stdev=121.98 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 78], | 30.00th=[ 113], 40.00th=[ 121], 50.00th=[ 182], 60.00th=[ 197], | 70.00th=[ 259], 80.00th=[ 262], 90.00th=[ 292], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 1988, max= 7001, per=36.43%, avg=3779.00, stdev=2357.63, samples=4 iops : min= 1, max= 6, avg= 3.00, stdev= 2.16, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=23.81%, ctx=212, 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=185402: Fri May 29 17:15:18 2026 read: IOPS=3, BW=3434KiB/s (3517kB/s)(6144KiB/1789msec) clat (msec): min=68, max=141, avg=89.22, stdev=26.72 lat (msec): min=68, max=141, avg=89.22, stdev=26.72 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 72], | 30.00th=[ 72], 40.00th=[ 82], 50.00th=[ 82], 60.00th=[ 86], | 70.00th=[ 88], 80.00th=[ 88], 90.00th=[ 142], 95.00th=[ 142], | 99.00th=[ 142], 99.50th=[ 142], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 2003, max= 4096, per=43.52%, avg=3224.33, stdev=1089.43, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=3, BW=3434KiB/s (3517kB/s)(6144KiB/1789msec); 0 zone resets clat (msec): min=74, max=332, avg=203.92, stdev=117.59 lat (msec): min=75, max=332, avg=204.05, stdev=117.59 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 83], | 30.00th=[ 83], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 288], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 2003, max= 5361, per=30.25%, avg=3137.33, stdev=1925.88, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 lat (msec) : 100=58.33%, 250=16.67%, 500=25.00% cpu : usr=0.06%, sys=17.28%, ctx=113, 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=185403: Fri May 29 17:15:18 2026 read: IOPS=2, BW=2615KiB/s (2678kB/s)(5120KiB/1958msec) clat (msec): min=62, max=333, avg=197.21, stdev=118.63 lat (msec): min=62, max=333, avg=197.21, stdev=118.63 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 63], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 182], 60.00th=[ 182], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 4007, max= 4096, per=54.68%, avg=4051.50, stdev=62.93, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3661KiB/s (3749kB/s)(7168KiB/1958msec); 0 zone resets clat (msec): min=79, max=282, avg=134.30, stdev=68.09 lat (msec): min=79, max=282, avg=134.41, stdev=68.08 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 97], | 30.00th=[ 106], 40.00th=[ 106], 50.00th=[ 109], 60.00th=[ 130], | 70.00th=[ 130], 80.00th=[ 138], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 2003, max= 7223, per=44.47%, avg=4613.00, stdev=3691.10, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 lat (msec) : 100=25.00%, 250=50.00%, 500=25.00% cpu : usr=0.05%, sys=19.83%, ctx=99, 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=7410KiB/s (7587kB/s), 741KiB/s-4488KiB/s (759kB/s-4596kB/s), io=20.0MiB (20.0MB), run=1597-2764msec WRITE: bw=10.1MiB/s (10.6MB/s), 3206KiB/s-3705KiB/s (3283kB/s-3794kB/s), io=28.0MiB (29.4MB), run=1597-2764msec rand-rw: (groupid=0, jobs=1): err= 0: pid=185405: Fri May 29 17:15:18 2026 read: IOPS=3, BW=3593KiB/s (3679kB/s)(7168KiB/1995msec) clat (usec): min=623, max=229314, avg=142019.30, stdev=80030.98 lat (usec): min=624, max=229314, avg=142020.53, stdev=80031.02 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], 20.00th=[102237], | 30.00th=[127402], 40.00th=[127402], 50.00th=[128451], 60.00th=[177210], | 70.00th=[177210], 80.00th=[229639], 90.00th=[229639], 95.00th=[229639], | 99.00th=[229639], 99.50th=[229639], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 3946, max= 4612, per=48.43%, avg=4279.00, stdev=470.93, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2566KiB/s (2628kB/s)(5120KiB/1995msec); 0 zone resets clat (msec): min=128, max=283, avg=199.61, stdev=58.76 lat (msec): min=128, max=283, avg=199.70, stdev=58.75 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 129], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 220], 80.00th=[ 220], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 1973, max= 6144, per=32.81%, avg=4058.50, stdev=2949.34, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (usec) : 750=8.33% lat (msec) : 250=83.33%, 500=8.33% cpu : usr=0.05%, sys=54.51%, ctx=370, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185406: Fri May 29 17:15:18 2026 read: IOPS=0, BW=884KiB/s (905kB/s)(2048KiB/2318msec) clat (msec): min=177, max=195, avg=186.64, stdev=13.13 lat (msec): min=177, max=195, avg=186.64, stdev=13.13 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 197], | 70.00th=[ 197], 80.00th=[ 197], 90.00th=[ 197], 95.00th=[ 197], | 99.00th=[ 197], 99.50th=[ 197], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 1544, max= 2048, per=20.33%, avg=1796.00, stdev=356.38, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=4, BW=4418KiB/s (4524kB/s)(10.0MiB/2318msec); 0 zone resets clat (msec): min=49, max=338, avg=193.03, stdev=80.86 lat (msec): min=49, max=339, avg=193.14, stdev=80.86 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 106], | 30.00th=[ 163], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 199], | 70.00th=[ 215], 80.00th=[ 230], 90.00th=[ 271], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 3088, max= 4096, per=30.77%, avg=3806.50, stdev=484.19, samples=4 iops : min= 3, max= 4, avg= 3.50, stdev= 0.58, samples=4 lat (msec) : 50=8.33%, 250=75.00%, 500=16.67% cpu : usr=0.04%, sys=55.42%, ctx=277, 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=185407: Fri May 29 17:15:18 2026 read: IOPS=3, BW=3212KiB/s (3289kB/s)(6144KiB/1913msec) clat (usec): min=478, max=181539, avg=57326.40, stdev=88281.57 lat (usec): min=478, max=181540, avg=57327.42, stdev=88281.46 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 490], | 30.00th=[ 490], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 529], | 70.00th=[160433], 80.00th=[160433], 90.00th=[181404], 95.00th=[181404], | 99.00th=[181404], 99.50th=[181404], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 3946, max= 4096, per=45.51%, avg=4021.00, stdev=106.07, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3212KiB/s (3289kB/s)(6144KiB/1913msec); 0 zone resets clat (msec): min=121, max=399, avg=261.19, stdev=101.78 lat (msec): min=121, max=399, avg=261.25, stdev=101.79 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 268], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 1973, max= 3160, per=19.35%, avg=2393.67, stdev=664.72, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 500=16.67%, 750=16.67% lat (msec) : 250=41.67%, 500=25.00% cpu : usr=0.00%, sys=46.60%, ctx=209, 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=185408: Fri May 29 17:15:18 2026 read: IOPS=2, BW=2342KiB/s (2398kB/s)(5120KiB/2186msec) clat (usec): min=376, max=102930, avg=21016.11, stdev=45791.58 lat (usec): min=376, max=102930, avg=21017.05, stdev=45791.33 clat percentiles (usec): | 1.00th=[ 375], 5.00th=[ 375], 10.00th=[ 375], 20.00th=[ 375], | 30.00th=[ 478], 40.00th=[ 478], 50.00th=[ 611], 60.00th=[ 611], | 70.00th=[ 685], 80.00th=[ 685], 90.00th=[103285], 95.00th=[103285], | 99.00th=[103285], 99.50th=[103285], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 8192, max= 8192, per=92.72%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=3, BW=3279KiB/s (3358kB/s)(7168KiB/2186msec); 0 zone resets clat (msec): min=125, max=692, avg=296.97, stdev=197.45 lat (msec): min=125, max=692, avg=297.04, stdev=197.46 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 136], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 275], 60.00th=[ 334], | 70.00th=[ 334], 80.00th=[ 351], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1553, max= 4096, per=23.68%, avg=2929.50, stdev=1357.83, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.73, samples=4 lat (usec) : 500=16.67%, 750=16.67% lat (msec) : 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=37.57%, ctx=233, 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=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=8835KiB/s (9047kB/s), 884KiB/s-3593KiB/s (905kB/s-3679kB/s), io=20.0MiB (20.0MB), run=1913-2318msec WRITE: bw=12.1MiB/s (12.7MB/s), 2566KiB/s-4418KiB/s (2628kB/s-4524kB/s), io=28.0MiB (29.4MB), run=1913-2318msec 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=185415: Fri May 29 17:15:28 2026 read: IOPS=2, BW=10.4MiB/s (10.9MB/s)(12.0MiB/1153msec) clat (msec): min=247, max=490, avg=331.25, stdev=137.63 lat (msec): min=247, max=490, avg=331.25, stdev=137.63 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 255], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 5818, max= 5818, per=95.35%, avg=5818.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=66.67% cpu : usr=0.00%, sys=48.87%, ctx=2115, 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=185416: Fri May 29 17:15:28 2026 read: IOPS=0, BW=1526KiB/s (1562kB/s)(4096KiB/2685msec) clat (nsec): min=1554.2M, max=1554.2M, avg=1554222816.00, stdev= 0.00 lat (nsec): min=1554.2M, max=1554.2M, avg=1554223682.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1552], 5.00th=[ 1552], 10.00th=[ 1552], 20.00th=[ 1552], | 30.00th=[ 1552], 40.00th=[ 1552], 50.00th=[ 1552], 60.00th=[ 1552], | 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= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3051KiB/s (3124kB/s)(8192KiB/2685msec); 0 zone resets clat (msec): min=345, max=597, avg=471.31, stdev=177.84 lat (msec): min=347, max=597, avg=472.34, stdev=177.17 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 7968, max= 7968, per=65.83%, avg=7968.00, 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=0.04%, sys=22.21%, ctx=520, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185417: Fri May 29 17:15:28 2026 write: IOPS=1, BW=4539KiB/s (4648kB/s)(12.0MiB/2707msec); 0 zone resets clat (msec): min=218, max=1939, avg=794.66, stdev=991.21 lat (msec): min=218, max=1939, avg=795.04, stdev=991.17 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 228], | 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] lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=13.97%, ctx=104, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185418: Fri May 29 17:15:28 2026 write: IOPS=1, BW=4811KiB/s (4927kB/s)(12.0MiB/2554msec); 0 zone resets clat (msec): min=197, max=1965, avg=788.08, stdev=1019.67 lat (msec): min=197, max=1965, avg=788.53, stdev=1019.60 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 1972], 80.00th=[ 1972], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min=11175, max=11175, per=92.32%, avg=11175.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.04%, sys=13.08%, ctx=98, 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=6102KiB/s (6248kB/s), 1526KiB/s-10.4MiB/s (1562kB/s-10.9MB/s), io=16.0MiB (16.8MB), run=1153-2685msec WRITE: bw=11.8MiB/s (12.4MB/s), 3051KiB/s-4811KiB/s (3124kB/s-4927kB/s), io=32.0MiB (33.6MB), run=2554-2707msec rand-rw: (groupid=0, jobs=1): err= 0: pid=185419: Fri May 29 17:15:28 2026 read: IOPS=1, BW=5606KiB/s (5740kB/s)(12.0MiB/2192msec) clat (msec): min=147, max=1720, avg=692.26, stdev=891.09 lat (msec): min=147, max=1720, avg=692.26, stdev=891.09 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 209], 50.00th=[ 209], 60.00th=[ 209], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min=16157, max=16157, per=100.00%, avg=16157.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=11.00%, ctx=72, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185420: Fri May 29 17:15:28 2026 read: IOPS=0, BW=1508KiB/s (1544kB/s)(4096KiB/2717msec) clat (nsec): min=1722.1M, max=1722.1M, avg=1722085098.00, stdev= 0.00 lat (nsec): min=1722.1M, max=1722.1M, avg=1722087806.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1720], 5.00th=[ 1720], 10.00th=[ 1720], 20.00th=[ 1720], | 30.00th=[ 1720], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3015KiB/s (3087kB/s)(8192KiB/2717msec); 0 zone resets clat (msec): min=346, max=374, avg=360.85, stdev=19.87 lat (msec): min=347, max=375, avg=361.26, stdev=19.91 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 8175, max= 8175, per=72.26%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=10.60%, ctx=65, 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=185421: Fri May 29 17:15:28 2026 write: IOPS=1, BW=4243KiB/s (4345kB/s)(12.0MiB/2896msec); 0 zone resets clat (msec): min=85, max=2054, avg=862.27, stdev=1048.36 lat (msec): min=85, max=2055, avg=862.75, stdev=1048.50 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 8175, max= 8175, per=72.26%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=7.60%, ctx=55, 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=185422: Fri May 29 17:15:28 2026 write: IOPS=1, BW=4573KiB/s (4683kB/s)(12.0MiB/2687msec); 0 zone resets clat (msec): min=136, max=2042, avg=802.74, stdev=1074.25 lat (msec): min=136, max=2042, avg=803.12, stdev=1074.27 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 230], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min=12029, max=12029, per=100.00%, avg=12029.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=11.24%, ctx=92, 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=6030KiB/s (6175kB/s), 1508KiB/s-5606KiB/s (1544kB/s-5740kB/s), io=16.0MiB (16.8MB), run=2192-2717msec WRITE: bw=11.0MiB/s (11.6MB/s), 3015KiB/s-4573KiB/s (3087kB/s-4683kB/s), io=32.0MiB (33.6MB), run=2687-2896msec