== sanity test 398b: DIO and buffer IO race ============== 14:01:21 (1771441281) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.61539 s, 19.2 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=154067: Wed Feb 18 14:02:21 2026 read: IOPS=28, BW=115KiB/s (117kB/s)(5992KiB/52272msec) clat (usec): min=189, max=632891, avg=18332.40, stdev=20062.40 lat (usec): min=189, max=632892, avg=18334.01, stdev=20062.27 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 2147], 10.00th=[ 7898], 20.00th=[ 10028], | 30.00th=[ 11863], 40.00th=[ 13698], 50.00th=[ 15664], 60.00th=[ 17957], | 70.00th=[ 20841], 80.00th=[ 24511], 90.00th=[ 31327], 95.00th=[ 36439], | 99.00th=[ 55313], 99.50th=[ 77071], 99.90th=[217056], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 208, per=25.06%, avg=114.51, stdev=35.86, samples=104 iops : min= 1, max= 52, avg=28.27, stdev= 9.09, samples=104 write: IOPS=30, BW=120KiB/s (123kB/s)(6296KiB/52272msec); 0 zone resets clat (usec): min=855, max=126449, avg=15624.49, stdev=12871.99 lat (usec): min=855, max=126450, avg=15625.50, stdev=12872.05 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2474], 10.00th=[ 3064], 20.00th=[ 4178], | 30.00th=[ 6259], 40.00th=[ 9503], 50.00th=[ 12518], 60.00th=[ 15664], | 70.00th=[ 19792], 80.00th=[ 25297], 90.00th=[ 32900], 95.00th=[ 40633], | 99.00th=[ 56361], 99.50th=[ 63701], 99.90th=[ 95945], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 32, max= 224, per=25.34%, avg=121.37, stdev=38.29, samples=103 iops : min= 8, max= 56, avg=29.99, stdev= 9.68, samples=103 lat (usec) : 250=0.10%, 500=0.68%, 750=0.68%, 1000=0.68% lat (msec) : 2=1.63%, 4=8.40%, 10=18.59%, 20=38.12%, 50=29.59% lat (msec) : 100=1.37%, 250=0.13%, 750=0.03% cpu : usr=0.10%, sys=28.15%, ctx=9291, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154069: Wed Feb 18 14:02:21 2026 read: IOPS=28, BW=114KiB/s (117kB/s)(5940KiB/51890msec) clat (usec): min=184, max=185569, avg=17859.22, stdev=11306.70 lat (usec): min=185, max=185569, avg=17860.08, stdev=11306.74 clat percentiles (usec): | 1.00th=[ 416], 5.00th=[ 5342], 10.00th=[ 8029], 20.00th=[ 9896], | 30.00th=[ 11863], 40.00th=[ 13698], 50.00th=[ 16057], 60.00th=[ 18220], | 70.00th=[ 20841], 80.00th=[ 24511], 90.00th=[ 30802], 95.00th=[ 35914], | 99.00th=[ 51119], 99.50th=[ 62653], 99.90th=[116917], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 7, max= 216, per=25.06%, avg=114.53, stdev=35.09, samples=103 iops : min= 1, max= 54, avg=28.28, stdev= 8.83, samples=103 write: IOPS=30, BW=122KiB/s (125kB/s)(6348KiB/51890msec); 0 zone resets clat (usec): min=790, max=629888, avg=15855.16, stdev=20574.38 lat (usec): min=790, max=629888, avg=15856.17, stdev=20574.45 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 2442], 10.00th=[ 2933], 20.00th=[ 4015], | 30.00th=[ 6194], 40.00th=[ 9110], 50.00th=[ 12256], 60.00th=[ 15401], | 70.00th=[ 19268], 80.00th=[ 25035], 90.00th=[ 32637], 95.00th=[ 39060], | 99.00th=[ 61080], 99.50th=[ 76022], 99.90th=[179307], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 39, max= 216, per=25.74%, avg=123.28, stdev=42.27, samples=102 iops : min= 9, max= 54, avg=30.47, stdev=10.68, samples=102 lat (usec) : 250=0.10%, 500=0.65%, 750=0.62%, 1000=0.75% lat (msec) : 2=1.40%, 4=8.89%, 10=19.53%, 20=37.70%, 50=28.84% lat (msec) : 100=1.33%, 250=0.16%, 750=0.03% cpu : usr=0.14%, sys=28.51%, ctx=9382, 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=154070: Wed Feb 18 14:02:21 2026 read: IOPS=28, BW=115KiB/s (118kB/s)(6028KiB/52430msec) clat (usec): min=121, max=89262, avg=18040.75, stdev=10899.96 lat (usec): min=121, max=89263, avg=18041.70, stdev=10900.06 clat percentiles (usec): | 1.00th=[ 404], 5.00th=[ 2900], 10.00th=[ 7767], 20.00th=[ 9896], | 30.00th=[11863], 40.00th=[13698], 50.00th=[16057], 60.00th=[18482], | 70.00th=[21627], 80.00th=[25297], 90.00th=[31065], 95.00th=[37487], | 99.00th=[58459], 99.50th=[70779], 99.90th=[81265], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 55, max= 208, per=25.30%, avg=115.62, stdev=33.42, samples=103 iops : min= 13, max= 52, avg=28.55, stdev= 8.47, samples=103 write: IOPS=29, BW=119KiB/s (122kB/s)(6260KiB/52430msec); 0 zone resets clat (usec): min=809, max=628997, avg=16000.62, stdev=20121.10 lat (usec): min=809, max=628997, avg=16001.77, stdev=20121.12 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 2409], 10.00th=[ 2999], 20.00th=[ 4424], | 30.00th=[ 6783], 40.00th=[ 9896], 50.00th=[ 13042], 60.00th=[ 16057], | 70.00th=[ 19530], 80.00th=[ 24773], 90.00th=[ 32375], 95.00th=[ 38011], | 99.00th=[ 61080], 99.50th=[ 71828], 99.90th=[135267], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 14, max= 224, per=24.82%, avg=118.88, stdev=40.29, samples=104 iops : min= 3, max= 56, avg=29.37, stdev=10.18, samples=104 lat (usec) : 250=0.23%, 500=0.59%, 750=0.88%, 1000=0.75% lat (msec) : 2=1.66%, 4=7.45%, 10=19.21%, 20=37.57%, 50=30.08% lat (msec) : 100=1.53%, 250=0.03%, 750=0.03% cpu : usr=0.12%, sys=28.52%, ctx=9439, 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=154073: Wed Feb 18 14:02:21 2026 read: IOPS=28, BW=116KiB/s (119kB/s)(6052KiB/52209msec) clat (usec): min=188, max=77953, avg=17923.63, stdev=10450.94 lat (usec): min=188, max=77954, avg=17924.85, stdev=10451.41 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 1516], 10.00th=[ 7767], 20.00th=[ 9765], | 30.00th=[11469], 40.00th=[13698], 50.00th=[16057], 60.00th=[18482], | 70.00th=[21627], 80.00th=[25035], 90.00th=[32375], 95.00th=[37487], | 99.00th=[51643], 99.50th=[55313], 99.90th=[69731], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 47, max= 184, per=25.61%, avg=117.03, stdev=34.33, samples=103 iops : min= 11, max= 46, avg=28.90, stdev= 8.72, samples=103 write: IOPS=29, BW=119KiB/s (122kB/s)(6236KiB/52209msec); 0 zone resets clat (usec): min=718, max=627253, avg=15956.63, stdev=21104.60 lat (usec): min=719, max=627254, avg=15959.64, stdev=21106.52 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 2442], 10.00th=[ 3064], 20.00th=[ 4359], | 30.00th=[ 6456], 40.00th=[ 9372], 50.00th=[ 12125], 60.00th=[ 15401], | 70.00th=[ 18744], 80.00th=[ 23725], 90.00th=[ 32375], 95.00th=[ 42206], | 99.00th=[ 66847], 99.50th=[ 82314], 99.90th=[200279], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 7, max= 240, per=24.92%, avg=119.36, stdev=37.44, samples=104 iops : min= 1, max= 60, avg=29.48, stdev= 9.46, samples=104 lat (usec) : 250=0.07%, 500=0.62%, 750=1.11%, 1000=0.72% lat (msec) : 2=1.56%, 4=7.68%, 10=20.51%, 20=37.21%, 50=28.65% lat (msec) : 100=1.73%, 250=0.13%, 750=0.03% cpu : usr=0.14%, sys=28.56%, ctx=9463, 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=458KiB/s (469kB/s), 114KiB/s-116KiB/s (117kB/s-119kB/s), io=23.4MiB (24.6MB), run=51890-52430msec WRITE: bw=479KiB/s (491kB/s), 119KiB/s-122KiB/s (122kB/s-125kB/s), io=24.6MiB (25.7MB), run=51890-52430msec rand-rw: (groupid=0, jobs=1): err= 0: pid=154068: Wed Feb 18 14:02:48 2026 read: IOPS=18, BW=75.5KiB/s (77.3kB/s)(5992KiB/79398msec) clat (msec): min=2, max=635, avg=16.37, stdev=21.26 lat (msec): min=2, max=635, avg=16.37, stdev=21.26 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 43], | 99.00th=[ 69], 99.50th=[ 92], 99.90th=[ 138], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 15, max= 224, per=25.31%, avg=76.19, stdev=40.01, samples=156 iops : min= 3, max= 56, avg=18.73, stdev=10.13, samples=156 write: IOPS=19, BW=79.3KiB/s (81.2kB/s)(6296KiB/79398msec); 0 zone resets clat (msec): min=14, max=211, avg=34.75, stdev=17.55 lat (msec): min=14, max=211, avg=34.75, stdev=17.55 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 27], 50.00th=[ 30], 60.00th=[ 34], | 70.00th=[ 39], 80.00th=[ 46], 90.00th=[ 57], 95.00th=[ 67], | 99.00th=[ 100], 99.50th=[ 120], 99.90th=[ 171], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 15, max= 168, per=25.21%, avg=79.43, stdev=35.52, samples=157 iops : min= 3, max= 42, avg=19.54, stdev= 9.05, samples=157 lat (msec) : 4=1.99%, 10=18.36%, 20=22.88%, 50=47.49%, 100=8.66% lat (msec) : 250=0.59%, 750=0.03% cpu : usr=0.09%, sys=10.53%, ctx=6485, 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=154071: Wed Feb 18 14:02:48 2026 read: IOPS=18, BW=74.6KiB/s (76.3kB/s)(5940KiB/79674msec) clat (msec): min=2, max=604, avg=16.26, stdev=20.43 lat (msec): min=2, max=604, avg=16.26, stdev=20.43 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 43], | 99.00th=[ 67], 99.50th=[ 78], 99.90th=[ 138], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7, max= 200, per=24.75%, avg=74.48, stdev=40.81, samples=157 iops : min= 1, max= 50, avg=18.31, stdev=10.34, samples=157 write: IOPS=19, BW=79.7KiB/s (81.6kB/s)(6348KiB/79674msec); 0 zone resets clat (msec): min=11, max=212, avg=34.87, stdev=17.84 lat (msec): min=11, max=212, avg=34.87, stdev=17.84 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 30], 60.00th=[ 34], | 70.00th=[ 40], 80.00th=[ 46], 90.00th=[ 57], 95.00th=[ 67], | 99.00th=[ 104], 99.50th=[ 122], 99.90th=[ 178], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 31, max= 168, per=25.17%, avg=79.27, stdev=35.25, samples=157 iops : min= 7, max= 42, avg=19.50, stdev= 8.97, samples=157 lat (msec) : 4=2.34%, 10=18.00%, 20=23.21%, 50=46.61%, 100=9.18% lat (msec) : 250=0.62%, 750=0.03% cpu : usr=0.10%, sys=10.48%, ctx=6399, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154072: Wed Feb 18 14:02:48 2026 read: IOPS=19, BW=76.1KiB/s (77.9kB/s)(6028KiB/79250msec) clat (msec): min=2, max=117, avg=16.43, stdev=14.25 lat (msec): min=2, max=117, avg=16.43, stdev=14.25 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 19], 80.00th=[ 24], 90.00th=[ 34], 95.00th=[ 44], | 99.00th=[ 70], 99.50th=[ 90], 99.90th=[ 108], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 15, max= 192, per=25.33%, avg=76.24, stdev=39.92, samples=156 iops : min= 3, max= 48, avg=18.74, stdev=10.15, samples=156 write: IOPS=19, BW=78.0KiB/s (80.9kB/s)(6260KiB/79250msec); 0 zone resets clat (msec): min=13, max=617, avg=34.70, stdev=22.65 lat (msec): min=13, max=617, avg=34.70, stdev=22.65 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 29], 60.00th=[ 33], | 70.00th=[ 38], 80.00th=[ 45], 90.00th=[ 57], 95.00th=[ 67], | 99.00th=[ 97], 99.50th=[ 126], 99.90th=[ 171], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 23, max= 168, per=25.10%, avg=79.06, stdev=36.74, samples=156 iops : min= 5, max= 42, avg=19.45, stdev= 9.33, samples=156 lat (msec) : 4=1.99%, 10=17.42%, 20=23.21%, 50=48.21%, 100=8.63% lat (msec) : 250=0.52%, 750=0.03% cpu : usr=0.08%, sys=10.60%, ctx=6522, 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=154074: Wed Feb 18 14:02:48 2026 read: IOPS=19, BW=76.3KiB/s (78.2kB/s)(6052KiB/79289msec) clat (msec): min=2, max=154, avg=16.22, stdev=14.84 lat (msec): min=2, max=154, avg=16.22, stdev=14.84 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 45], | 99.00th=[ 75], 99.50th=[ 87], 99.90th=[ 153], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 16, max= 208, per=25.62%, avg=77.12, stdev=38.88, samples=156 iops : min= 4, max= 52, avg=18.96, stdev= 9.86, samples=156 write: IOPS=19, BW=78.6KiB/s (80.5kB/s)(6236KiB/79289msec); 0 zone resets clat (msec): min=13, max=624, avg=35.00, stdev=22.29 lat (msec): min=13, max=624, avg=35.00, stdev=22.29 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 31], 60.00th=[ 34], | 70.00th=[ 39], 80.00th=[ 46], 90.00th=[ 55], 95.00th=[ 66], | 99.00th=[ 90], 99.50th=[ 112], 99.90th=[ 215], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 15, max= 160, per=25.07%, avg=78.97, stdev=33.88, samples=157 iops : min= 3, max= 40, avg=19.43, stdev= 8.65, samples=157 lat (msec) : 4=1.99%, 10=18.16%, 20=23.27%, 50=47.62%, 100=8.43% lat (msec) : 250=0.49%, 750=0.03% cpu : usr=0.08%, sys=10.57%, ctx=6413, 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=301KiB/s (309kB/s), 74.6KiB/s-76.3KiB/s (76.3kB/s-78.2kB/s), io=23.4MiB (24.6MB), run=79250-79674msec WRITE: bw=316KiB/s (323kB/s), 78.6KiB/s-79.7KiB/s (80.5kB/s-81.6kB/s), io=24.6MiB (25.7MB), run=79250-79674msec 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=154104: Wed Feb 18 14:03:09 2026 read: IOPS=25, BW=415KiB/s (425kB/s)(5920KiB/14252msec) clat (usec): min=126, max=104581, avg=20468.97, stdev=13709.14 lat (usec): min=127, max=104582, avg=20469.95, stdev=13709.19 clat percentiles (usec): | 1.00th=[ 249], 5.00th=[ 635], 10.00th=[ 5932], 20.00th=[ 10945], | 30.00th=[ 13566], 40.00th=[ 15926], 50.00th=[ 18220], 60.00th=[ 21103], | 70.00th=[ 24249], 80.00th=[ 28705], 90.00th=[ 34866], 95.00th=[ 41157], | 99.00th=[ 79168], 99.50th=[ 85459], 99.90th=[104334], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 192, max= 672, per=26.18%, avg=414.36, stdev=126.28, samples=28 iops : min= 12, max= 42, avg=25.32, stdev= 7.81, samples=28 write: IOPS=27, BW=447KiB/s (458kB/s)(6368KiB/14252msec); 0 zone resets clat (usec): min=1265, max=72947, avg=16700.52, stdev=12466.95 lat (usec): min=1265, max=72949, avg=16702.25, stdev=12466.98 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 3490], 10.00th=[ 4080], 20.00th=[ 5538], | 30.00th=[ 8586], 40.00th=[10945], 50.00th=[13698], 60.00th=[16057], | 70.00th=[20841], 80.00th=[25560], 90.00th=[35914], 95.00th=[41157], | 99.00th=[56361], 99.50th=[64226], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 191, max= 832, per=26.85%, avg=447.32, stdev=173.14, samples=28 iops : min= 11, max= 52, avg=27.39, stdev=10.97, samples=28 lat (usec) : 250=0.52%, 500=0.91%, 750=1.17%, 1000=0.65% lat (msec) : 2=1.04%, 4=4.43%, 10=17.97%, 20=35.55%, 50=35.29% lat (msec) : 100=2.34%, 250=0.13% cpu : usr=0.13%, sys=31.04%, ctx=2688, 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=154105: Wed Feb 18 14:03:09 2026 read: IOPS=23, BW=380KiB/s (389kB/s)(5744KiB/15125msec) clat (usec): min=239, max=94755, avg=20965.73, stdev=13218.67 lat (usec): min=240, max=94756, avg=20966.67, stdev=13218.76 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 807], 10.00th=[ 7701], 20.00th=[11994], | 30.00th=[14484], 40.00th=[16581], 50.00th=[18744], 60.00th=[21890], | 70.00th=[24511], 80.00th=[29230], 90.00th=[35914], 95.00th=[43254], | 99.00th=[78119], 99.50th=[83362], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 181, max= 672, per=23.80%, avg=376.79, stdev=130.55, samples=29 iops : min= 11, max= 42, avg=23.00, stdev= 8.27, samples=29 write: IOPS=27, BW=433KiB/s (443kB/s)(6544KiB/15125msec); 0 zone resets clat (usec): min=1668, max=61972, avg=18386.70, stdev=13220.73 lat (usec): min=1669, max=61974, avg=18388.42, stdev=13220.79 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 3556], 10.00th=[ 4490], 20.00th=[ 6194], | 30.00th=[ 8979], 40.00th=[11994], 50.00th=[14484], 60.00th=[18482], | 70.00th=[24773], 80.00th=[29230], 90.00th=[37487], 95.00th=[44303], | 99.00th=[56361], 99.50th=[58459], 99.90th=[62129], 99.95th=[62129], | 99.99th=[62129] bw ( KiB/s): min= 160, max= 640, per=25.23%, avg=420.38, stdev=131.39, samples=29 iops : min= 10, max= 40, avg=25.72, stdev= 8.19, samples=29 lat (usec) : 250=0.13%, 500=0.52%, 750=1.43%, 1000=0.78% lat (msec) : 2=1.43%, 4=3.52%, 10=16.54%, 20=34.11%, 50=38.41% lat (msec) : 100=3.12% cpu : usr=0.17%, sys=30.05%, ctx=2753, 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=154106: Wed Feb 18 14:03:09 2026 read: IOPS=26, BW=429KiB/s (439kB/s)(6256KiB/14597msec) clat (usec): min=232, max=137377, avg=20607.59, stdev=14871.52 lat (usec): min=233, max=137378, avg=20608.56, stdev=14871.59 clat percentiles (usec): | 1.00th=[ 375], 5.00th=[ 562], 10.00th=[ 1418], 20.00th=[ 10814], | 30.00th=[ 13435], 40.00th=[ 15533], 50.00th=[ 18482], 60.00th=[ 20317], | 70.00th=[ 23987], 80.00th=[ 28705], 90.00th=[ 38011], 95.00th=[ 46400], | 99.00th=[ 71828], 99.50th=[ 88605], 99.90th=[137364], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 191, max= 734, per=26.79%, avg=424.11, stdev=140.85, samples=28 iops : min= 11, max= 45, avg=25.96, stdev= 8.77, samples=28 write: IOPS=25, BW=413KiB/s (423kB/s)(6032KiB/14597msec); 0 zone resets clat (usec): min=1530, max=84405, avg=17137.85, stdev=13646.55 lat (usec): min=1531, max=84407, avg=17139.57, stdev=13646.53 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 3687], 10.00th=[ 4359], 20.00th=[ 5276], | 30.00th=[ 7898], 40.00th=[10290], 50.00th=[14353], 60.00th=[17433], | 70.00th=[20579], 80.00th=[25560], 90.00th=[35914], 95.00th=[44303], | 99.00th=[68682], 99.50th=[80217], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 159, max= 638, per=23.95%, avg=398.93, stdev=140.59, samples=28 iops : min= 9, max= 39, avg=24.36, stdev= 8.81, samples=28 lat (usec) : 250=0.13%, 500=1.17%, 750=2.47%, 1000=0.78% lat (msec) : 2=1.56%, 4=2.99%, 10=18.23%, 20=34.77%, 50=34.90% lat (msec) : 100=2.86%, 250=0.13% cpu : usr=0.12%, sys=29.91%, ctx=2678, 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=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=154107: Wed Feb 18 14:03:09 2026 read: IOPS=26, BW=423KiB/s (433kB/s)(6032KiB/14271msec) clat (usec): min=135, max=91072, avg=19722.41, stdev=12600.45 lat (usec): min=135, max=91073, avg=19723.52, stdev=12600.47 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 709], 10.00th=[ 2802], 20.00th=[11207], | 30.00th=[13304], 40.00th=[15401], 50.00th=[17695], 60.00th=[20579], | 70.00th=[23725], 80.00th=[27657], 90.00th=[34341], 95.00th=[43254], | 99.00th=[64750], 99.50th=[77071], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 223, max= 672, per=26.44%, avg=418.50, stdev=114.31, samples=28 iops : min= 13, max= 42, avg=25.61, stdev= 7.08, samples=28 write: IOPS=27, BW=438KiB/s (449kB/s)(6256KiB/14271msec); 0 zone resets clat (usec): min=1175, max=94881, avg=17263.57, stdev=13253.87 lat (usec): min=1177, max=94884, avg=17265.23, stdev=13254.01 clat percentiles (usec): | 1.00th=[ 2376], 5.00th=[ 4015], 10.00th=[ 4555], 20.00th=[ 6194], | 30.00th=[ 8455], 40.00th=[11338], 50.00th=[14222], 60.00th=[17171], | 70.00th=[21103], 80.00th=[25297], 90.00th=[31589], 95.00th=[41681], | 99.00th=[63701], 99.50th=[82314], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 253, max= 672, per=26.32%, avg=438.43, stdev=127.35, samples=28 iops : min= 15, max= 42, avg=26.86, stdev= 8.10, samples=28 lat (usec) : 250=0.13%, 500=0.13%, 750=2.34%, 1000=1.82% lat (msec) : 2=0.65%, 4=2.60%, 10=17.71%, 20=37.63%, 50=34.38% lat (msec) : 100=2.60% cpu : usr=0.15%, sys=31.35%, ctx=2571, 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=1584KiB/s (1622kB/s), 380KiB/s-429KiB/s (389kB/s-439kB/s), io=23.4MiB (24.5MB), run=14252-15125msec WRITE: bw=1666KiB/s (1706kB/s), 413KiB/s-447KiB/s (423kB/s-458kB/s), io=24.6MiB (25.8MB), run=14252-15125msec rand-rw: (groupid=0, jobs=1): err= 0: pid=154099: Wed Feb 18 14:03:17 2026 read: IOPS=16, BW=262KiB/s (269kB/s)(5920KiB/22553msec) clat (msec): min=4, max=111, avg=19.77, stdev=15.64 lat (msec): min=4, max=111, avg=19.77, stdev=15.64 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 19], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 40], 95.00th=[ 53], | 99.00th=[ 84], 99.50th=[ 102], 99.90th=[ 112], 99.95th=[ 112], | 99.99th=[ 112] bw ( KiB/s): min= 96, max= 512, per=24.10%, avg=255.95, stdev=114.81, samples=44 iops : min= 6, max= 32, avg=15.57, stdev= 7.33, samples=44 write: IOPS=17, BW=282KiB/s (289kB/s)(6368KiB/22553msec); 0 zone resets clat (msec): min=14, max=172, avg=38.17, stdev=21.15 lat (msec): min=14, max=172, avg=38.17, stdev=21.15 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 19], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 51], 90.00th=[ 65], 95.00th=[ 78], | 99.00th=[ 117], 99.50th=[ 157], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 63, max= 576, per=24.94%, avg=278.55, stdev=125.98, samples=44 iops : min= 3, max= 36, avg=16.98, stdev= 8.01, samples=44 lat (msec) : 10=13.41%, 20=23.44%, 50=49.61%, 100=12.11%, 250=1.43% cpu : usr=0.11%, sys=11.73%, ctx=1878, 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=154100: Wed Feb 18 14:03:17 2026 read: IOPS=15, BW=255KiB/s (261kB/s)(5744KiB/22529msec) clat (msec): min=3, max=119, avg=19.34, stdev=16.97 lat (msec): min=3, max=119, avg=19.35, stdev=16.97 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 21], 80.00th=[ 26], 90.00th=[ 41], 95.00th=[ 51], | 99.00th=[ 92], 99.50th=[ 117], 99.90th=[ 120], 99.95th=[ 120], | 99.99th=[ 120] bw ( KiB/s): min= 64, max= 576, per=23.97%, avg=254.59, stdev=130.54, samples=44 iops : min= 4, max= 36, avg=15.48, stdev= 8.30, samples=44 write: IOPS=18, BW=290KiB/s (297kB/s)(6544KiB/22529msec); 0 zone resets clat (msec): min=15, max=118, avg=37.96, stdev=18.75 lat (msec): min=15, max=118, avg=37.96, stdev=18.75 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 51], 90.00th=[ 64], 95.00th=[ 80], | 99.00th=[ 99], 99.50th=[ 111], 99.90th=[ 120], 99.95th=[ 120], | 99.99th=[ 120] bw ( KiB/s): min= 95, max= 576, per=25.65%, avg=286.52, stdev=121.18, samples=44 iops : min= 5, max= 36, avg=17.48, stdev= 7.75, samples=44 lat (msec) : 4=0.13%, 10=14.97%, 20=19.79%, 50=51.69%, 100=12.50% lat (msec) : 250=0.91% cpu : usr=0.11%, sys=11.29%, ctx=1826, 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=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=154101: Wed Feb 18 14:03:17 2026 read: IOPS=17, BW=284KiB/s (291kB/s)(6256KiB/21993msec) clat (usec): min=4072, max=86071, avg=18856.73, stdev=15335.00 lat (usec): min=4073, max=86072, avg=18857.72, stdev=15334.99 clat percentiles (usec): | 1.00th=[ 4293], 5.00th=[ 4883], 10.00th=[ 5538], 20.00th=[ 6718], | 30.00th=[ 8455], 40.00th=[11207], 50.00th=[14484], 60.00th=[17695], | 70.00th=[21627], 80.00th=[28181], 90.00th=[35914], 95.00th=[50594], | 99.00th=[79168], 99.50th=[85459], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 64, max= 670, per=26.79%, avg=284.51, stdev=159.04, samples=43 iops : min= 4, max= 41, avg=17.37, stdev=10.06, samples=43 write: IOPS=17, BW=274KiB/s (281kB/s)(6032KiB/21993msec); 0 zone resets clat (msec): min=15, max=149, avg=38.71, stdev=21.35 lat (msec): min=15, max=149, avg=38.71, stdev=21.35 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 36], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 65], 95.00th=[ 83], | 99.00th=[ 134], 99.50th=[ 146], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 95, max= 512, per=24.20%, avg=270.30, stdev=118.70, samples=43 iops : min= 5, max= 32, avg=16.49, stdev= 7.58, samples=43 lat (msec) : 10=18.62%, 20=18.88%, 50=49.87%, 100=11.33%, 250=1.30% cpu : usr=0.10%, sys=11.49%, ctx=1838, 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=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=154103: Wed Feb 18 14:03:17 2026 read: IOPS=16, BW=268KiB/s (275kB/s)(6032KiB/22491msec) clat (msec): min=4, max=115, avg=19.90, stdev=16.40 lat (msec): min=4, max=115, avg=19.90, stdev=16.40 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 41], 95.00th=[ 53], | 99.00th=[ 81], 99.50th=[ 115], 99.90th=[ 116], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 95, max= 544, per=25.11%, avg=266.64, stdev=121.69, samples=44 iops : min= 5, max= 34, avg=16.25, stdev= 7.72, samples=44 write: IOPS=17, BW=278KiB/s (285kB/s)(6256KiB/22491msec); 0 zone resets clat (msec): min=16, max=144, avg=38.23, stdev=19.59 lat (msec): min=16, max=144, avg=38.24, stdev=19.59 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 51], 90.00th=[ 64], 95.00th=[ 75], | 99.00th=[ 107], 99.50th=[ 138], 99.90th=[ 146], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 96, max= 544, per=24.68%, avg=275.73, stdev=130.48, samples=44 iops : min= 6, max= 34, avg=16.82, stdev= 8.31, samples=44 lat (msec) : 10=14.97%, 20=20.05%, 50=51.43%, 100=12.24%, 250=1.30% cpu : usr=0.12%, sys=11.20%, ctx=1850, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1062KiB/s (1088kB/s), 255KiB/s-284KiB/s (261kB/s-291kB/s), io=23.4MiB (24.5MB), run=21993-22553msec WRITE: bw=1117KiB/s (1144kB/s), 274KiB/s-290KiB/s (281kB/s-297kB/s), io=24.6MiB (25.8MB), run=21993-22553msec 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=154122: Wed Feb 18 14:03:26 2026 read: IOPS=1, BW=2004KiB/s (2053kB/s)(7168KiB/3576msec) clat (msec): min=18, max=678, avg=251.73, stdev=210.86 lat (msec): min=18, max=678, avg=251.73, stdev=210.86 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 20], 10.00th=[ 20], 20.00th=[ 110], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 224], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 292], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1750, max= 4096, per=62.92%, avg=2926.25, stdev=1271.09, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1432KiB/s (1466kB/s)(5120KiB/3576msec); 0 zone resets clat (msec): min=182, max=453, avg=354.15, stdev=111.16 lat (msec): min=182, max=453, avg=354.23, stdev=111.16 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1822, max= 2000, per=29.58%, avg=1926.00, stdev=79.98, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 20=8.33%, 250=33.33%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=47.22%, ctx=803, 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=154123: Wed Feb 18 14:03:26 2026 read: IOPS=0, BW=465KiB/s (476kB/s)(2048KiB/4403msec) clat (msec): min=156, max=286, avg=221.37, stdev=92.16 lat (msec): min=156, max=286, avg=221.37, stdev=92.16 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 157], 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= 1750, max= 2000, per=40.31%, avg=1875.00, stdev=176.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2326KiB/s (2382kB/s)(10.0MiB/4403msec); 0 zone resets clat (msec): min=69, max=1375, avg=381.50, stdev=427.78 lat (msec): min=69, max=1375, avg=381.58, stdev=427.77 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 71], | 30.00th=[ 74], 40.00th=[ 153], 50.00th=[ 247], 60.00th=[ 257], | 70.00th=[ 268], 80.00th=[ 401], 90.00th=[ 902], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1750, max= 6144, per=49.13%, avg=3198.60, stdev=1900.35, samples=5 iops : min= 1, max= 6, avg= 2.60, stdev= 2.30, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=33.05%, ctx=520, 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=154124: Wed Feb 18 14:03:26 2026 read: IOPS=1, BW=1642KiB/s (1681kB/s)(6144KiB/3742msec) clat (msec): min=31, max=369, avg=204.99, stdev=135.60 lat (msec): min=31, max=369, avg=204.99, stdev=135.60 clat percentiles (msec): | 1.00th=[ 32], 5.00th=[ 32], 10.00th=[ 32], 20.00th=[ 58], | 30.00th=[ 58], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 230], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 3953, max= 5720, per=100.00%, avg=4836.50, stdev=1249.46, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1642KiB/s (1681kB/s)(6144KiB/3742msec); 0 zone resets clat (msec): min=149, max=808, avg=390.02, stdev=265.22 lat (msec): min=149, max=809, avg=390.09, stdev=265.21 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 257], 50.00th=[ 257], 60.00th=[ 351], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1822, max= 3531, per=34.59%, avg=2252.40, stdev=718.67, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.05%, sys=41.59%, ctx=524, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=154125: Wed Feb 18 14:03:26 2026 read: IOPS=1, BW=1198KiB/s (1226kB/s)(5120KiB/4275msec) clat (usec): min=911, max=327908, avg=189935.67, stdev=137024.90 lat (usec): min=912, max=327909, avg=189936.89, stdev=137024.92 clat percentiles (usec): | 1.00th=[ 914], 5.00th=[ 914], 10.00th=[ 914], 20.00th=[ 914], | 30.00th=[119014], 40.00th=[119014], 50.00th=[189793], 60.00th=[189793], | 70.00th=[312476], 80.00th=[312476], 90.00th=[329253], 95.00th=[329253], | 99.00th=[329253], 99.50th=[329253], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 2000, max= 5720, per=82.99%, avg=3860.00, stdev=2630.44, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1677KiB/s (1717kB/s)(7168KiB/4275msec); 0 zone resets clat (msec): min=245, max=1041, avg=451.86, stdev=282.00 lat (msec): min=246, max=1041, avg=451.94, stdev=281.99 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 257], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 338], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 575], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1756, max= 4096, per=34.95%, avg=2275.50, stdev=897.73, samples=6 iops : min= 1, max= 4, avg= 1.50, stdev= 1.22, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=39.10%, ctx=437, 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=4651KiB/s (4763kB/s), 465KiB/s-2004KiB/s (476kB/s-2053kB/s), io=20.0MiB (20.0MB), run=3576-4403msec WRITE: bw=6512KiB/s (6668kB/s), 1432KiB/s-2326KiB/s (1466kB/s-2382kB/s), io=28.0MiB (29.4MB), run=3576-4403msec rand-rw: (groupid=0, jobs=1): err= 0: pid=154117: Wed Feb 18 14:03:26 2026 read: IOPS=2, BW=2344KiB/s (2400kB/s)(7168KiB/3058msec) clat (msec): min=81, max=784, avg=274.92, stdev=271.13 lat (msec): min=81, max=784, avg=274.92, stdev=271.13 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 94], | 30.00th=[ 132], 40.00th=[ 132], 50.00th=[ 136], 60.00th=[ 176], | 70.00th=[ 176], 80.00th=[ 523], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1921, max= 5251, per=60.84%, avg=2806.75, stdev=1630.36, samples=4 iops : min= 1, max= 5, avg= 2.25, stdev= 1.89, samples=4 write: IOPS=1, BW=1674KiB/s (1714kB/s)(5120KiB/3058msec); 0 zone resets clat (msec): min=128, max=443, avg=217.47, stdev=131.39 lat (msec): min=128, max=443, avg=217.56, stdev=131.39 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 129], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 150], 60.00th=[ 150], | 70.00th=[ 224], 80.00th=[ 224], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1750, max= 3842, per=37.14%, avg=2398.75, stdev=969.45, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=58.33%, 500=8.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=17.47%, ctx=120, 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=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=154118: Wed Feb 18 14:03:26 2026 read: IOPS=0, BW=461KiB/s (472kB/s)(2048KiB/4439msec) clat (msec): min=86, max=134, avg=110.59, stdev=34.07 lat (msec): min=86, max=134, avg=110.59, stdev=34.07 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 87], 60.00th=[ 136], | 70.00th=[ 136], 80.00th=[ 136], 90.00th=[ 136], 95.00th=[ 136], | 99.00th=[ 136], 99.50th=[ 136], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 1753, max= 1996, per=40.64%, avg=1874.50, stdev=171.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2307KiB/s (2362kB/s)(10.0MiB/4439msec); 0 zone resets clat (msec): min=58, max=1236, avg=418.08, stdev=369.49 lat (msec): min=58, max=1236, avg=418.17, stdev=369.52 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 67], | 30.00th=[ 87], 40.00th=[ 188], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 472], 80.00th=[ 489], 90.00th=[ 785], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 1753, max= 6144, per=46.49%, avg=3002.83, stdev=1750.89, samples=6 iops : min= 1, max= 6, avg= 2.17, stdev= 2.04, samples=6 lat (msec) : 100=33.33%, 250=16.67%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.05%, sys=17.42%, 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=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=154119: Wed Feb 18 14:03:26 2026 read: IOPS=1, BW=1393KiB/s (1426kB/s)(6144KiB/4412msec) clat (msec): min=128, max=601, avg=305.57, stdev=189.41 lat (msec): min=128, max=601, avg=305.57, stdev=189.41 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 167], 50.00th=[ 167], 60.00th=[ 368], | 70.00th=[ 418], 80.00th=[ 418], 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= 2015, max= 4079, per=71.80%, avg=3312.00, stdev=1129.47, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1393KiB/s (1426kB/s)(6144KiB/4412msec); 0 zone resets clat (msec): min=95, max=855, avg=418.94, stdev=306.61 lat (msec): min=95, max=855, avg=419.03, stdev=306.61 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 106], | 30.00th=[ 106], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 510], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1921, max= 3494, per=36.53%, avg=2359.25, stdev=757.70, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=14.19%, ctx=180, 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=154120: Wed Feb 18 14:03:26 2026 read: IOPS=1, BW=1380KiB/s (1413kB/s)(5120KiB/3711msec) clat (msec): min=95, max=500, avg=223.43, stdev=165.11 lat (msec): min=95, max=500, avg=223.43, stdev=165.11 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 186], 60.00th=[ 186], | 70.00th=[ 232], 80.00th=[ 232], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 3992, max= 4015, per=86.79%, avg=4003.50, stdev=16.26, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1932KiB/s (1978kB/s)(7168KiB/3711msec); 0 zone resets clat (msec): min=116, max=903, avg=368.66, stdev=271.81 lat (msec): min=116, max=903, avg=368.76, stdev=271.86 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 165], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 313], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 510], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1750, max= 4031, per=42.45%, avg=2742.00, stdev=1099.03, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=17.98%, ctx=150, 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=4614KiB/s (4724kB/s), 461KiB/s-2344KiB/s (472kB/s-2400kB/s), io=20.0MiB (20.0MB), run=3058-4439msec WRITE: bw=6459KiB/s (6614kB/s), 1393KiB/s-2307KiB/s (1426kB/s-2362kB/s), io=28.0MiB (29.4MB), run=3058-4439msec 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=154136: Wed Feb 18 14:03:35 2026 read: IOPS=1, BW=5392KiB/s (5521kB/s)(12.0MiB/2279msec) clat (msec): min=501, max=1030, avg=746.66, stdev=266.49 lat (msec): min=501, max=1030, avg=746.66, stdev=266.49 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=38.59%, ctx=2551, 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=154137: Wed Feb 18 14:03:35 2026 read: IOPS=0, BW=1712KiB/s (1753kB/s)(4096KiB/2393msec) clat (nsec): min=1049.8M, max=1049.8M, avg=1049778520.00, stdev= 0.00 lat (nsec): min=1049.8M, max=1049.8M, avg=1049781556.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1053], 5.00th=[ 1053], 10.00th=[ 1053], 20.00th=[ 1053], | 30.00th=[ 1053], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] 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=3423KiB/s (3505kB/s)(8192KiB/2393msec); 0 zone resets clat (msec): min=453, max=850, avg=652.39, stdev=280.82 lat (msec): min=454, max=851, avg=652.68, stdev=280.85 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 8175, max= 8175, per=68.56%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=29.60%, ctx=931, 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=154138: Wed Feb 18 14:03:35 2026 write: IOPS=1, BW=4472KiB/s (4579kB/s)(12.0MiB/2748msec); 0 zone resets clat (msec): min=259, max=1536, avg=889.60, stdev=638.79 lat (msec): min=259, max=1536, avg=889.79, stdev=638.89 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8192, max= 8192, per=68.70%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.07%, sys=19.33%, ctx=89, 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=154139: Wed Feb 18 14:03:35 2026 write: IOPS=1, BW=4556KiB/s (4666kB/s)(12.0MiB/2697msec); 0 zone resets clat (msec): min=300, max=1428, avg=889.48, stdev=565.86 lat (msec): min=300, max=1429, avg=889.79, stdev=566.05 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 6023, max= 8175, per=59.54%, avg=7099.00, stdev=1521.69, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=9.57%, ctx=168, 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=6847KiB/s (7011kB/s), 1712KiB/s-5392KiB/s (1753kB/s-5521kB/s), io=16.0MiB (16.8MB), run=2279-2393msec WRITE: bw=11.6MiB/s (12.2MB/s), 3423KiB/s-4556KiB/s (3505kB/s-4666kB/s), io=32.0MiB (33.6MB), run=2393-2748msec rand-rw: (groupid=0, jobs=1): err= 0: pid=154131: Wed Feb 18 14:03:35 2026 read: IOPS=1, BW=4106KiB/s (4204kB/s)(12.0MiB/2993msec) clat (msec): min=185, max=1851, avg=942.55, stdev=843.25 lat (msec): min=185, max=1851, avg=942.55, stdev=843.25 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.50%, ctx=107, 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=154133: Wed Feb 18 14:03:35 2026 read: IOPS=0, BW=1396KiB/s (1430kB/s)(4096KiB/2934msec) clat (nsec): min=1537.4M, max=1537.4M, avg=1537402889.00, stdev= 0.00 lat (nsec): min=1537.4M, max=1537.4M, avg=1537403769.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1536], 5.00th=[ 1536], 10.00th=[ 1536], 20.00th=[ 1536], | 30.00th=[ 1536], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2792KiB/s (2859kB/s)(8192KiB/2934msec); 0 zone resets clat (msec): min=381, max=851, avg=616.63, stdev=332.34 lat (msec): min=382, max=851, avg=616.97, stdev=332.23 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 8192, max= 8192, per=77.23%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=14.87%, ctx=103, 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=154134: Wed Feb 18 14:03:35 2026 write: IOPS=0, BW=3978KiB/s (4073kB/s)(12.0MiB/3089msec); 0 zone resets clat (msec): min=57, max=2503, avg=975.35, stdev=1332.28 lat (msec): min=57, max=2503, avg=975.62, stdev=1332.29 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 58], | 30.00th=[ 58], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 2500], 80.00th=[ 2500], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 8192, max= 8192, per=77.23%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=10.78%, ctx=58, 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=154135: Wed Feb 18 14:03:35 2026 write: IOPS=1, BW=4951KiB/s (5070kB/s)(12.0MiB/2482msec); 0 zone resets clat (msec): min=172, max=1454, avg=775.74, stdev=644.53 lat (msec): min=172, max=1454, avg=776.04, stdev=644.53 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 7953, max= 8192, per=76.11%, avg=8072.50, stdev=169.00, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=16.77%, ctx=98, 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=5474KiB/s (5605kB/s), 1396KiB/s-4106KiB/s (1430kB/s-4204kB/s), io=16.0MiB (16.8MB), run=2934-2993msec WRITE: bw=10.4MiB/s (10.9MB/s), 2792KiB/s-4951KiB/s (2859kB/s-5070kB/s), io=32.0MiB (33.6MB), run=2482-3089msec