== sanity test 398b: DIO and buffer IO race ============== 21:13:55 (1786410835) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.00836 s, 8.4 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=143978: Mon Aug 10 21:16:25 2026 read: IOPS=11, BW=46.2KiB/s (47.3kB/s)(5992KiB/129669msec) clat (usec): min=29, max=800367, avg=40727.55, stdev=37684.42 lat (usec): min=29, max=800370, avg=40728.73, stdev=37684.46 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 68], 20.00th=[ 16909], | 30.00th=[ 23200], 40.00th=[ 28181], 50.00th=[ 33817], 60.00th=[ 41681], | 70.00th=[ 50070], 80.00th=[ 62129], 90.00th=[ 80217], 95.00th=[ 94897], | 99.00th=[141558], 99.50th=[198181], 99.90th=[337642], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 118, per=25.20%, avg=46.12, stdev=20.67, samples=253 iops : min= 1, max= 29, avg=10.89, stdev= 5.21, samples=253 write: IOPS=12, BW=48.6KiB/s (49.7kB/s)(6296KiB/129669msec); 0 zone resets clat (usec): min=1046, max=534635, avg=43448.52, stdev=47519.22 lat (usec): min=1047, max=534637, avg=43450.46, stdev=47518.90 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1319], 10.00th=[ 1614], 20.00th=[ 4359], | 30.00th=[ 8717], 40.00th=[ 20579], 50.00th=[ 31851], 60.00th=[ 42206], | 70.00th=[ 55837], 80.00th=[ 73925], 90.00th=[101188], 95.00th=[130548], | 99.00th=[198181], 99.50th=[225444], 99.90th=[480248], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 7, max= 118, per=25.16%, avg=48.31, stdev=19.67, samples=254 iops : min= 1, max= 29, avg=11.44, stdev= 4.95, samples=254 lat (usec) : 50=0.94%, 100=4.65%, 250=0.36%, 500=0.20%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=6.15%, 4=3.71%, 10=6.93%, 20=9.80%, 50=34.90% lat (msec) : 100=24.84%, 250=7.06%, 500=0.23%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.40%, ctx=6364, majf=0, minf=19 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=143979: Mon Aug 10 21:16:25 2026 read: IOPS=11, BW=45.4KiB/s (46.5kB/s)(5940KiB/130867msec) clat (usec): min=17, max=673824, avg=40214.15, stdev=34972.56 lat (usec): min=17, max=673826, avg=40218.61, stdev=34968.97 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 66], 20.00th=[ 16909], | 30.00th=[ 23462], 40.00th=[ 28705], 50.00th=[ 34341], 60.00th=[ 41681], | 70.00th=[ 49546], 80.00th=[ 61080], 90.00th=[ 80217], 95.00th=[ 96994], | 99.00th=[137364], 99.50th=[170918], 99.90th=[295699], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 7, max= 110, per=24.92%, avg=45.60, stdev=20.42, samples=252 iops : min= 1, max= 27, avg=10.76, stdev= 5.12, samples=252 write: IOPS=12, BW=48.5KiB/s (49.7kB/s)(6348KiB/130867msec); 0 zone resets clat (usec): min=808, max=496064, avg=44548.49, stdev=49024.99 lat (usec): min=809, max=496066, avg=44551.99, stdev=49023.61 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1319], 10.00th=[ 1434], 20.00th=[ 3752], | 30.00th=[ 8029], 40.00th=[ 18744], 50.00th=[ 31589], 60.00th=[ 43779], | 70.00th=[ 57934], 80.00th=[ 78119], 90.00th=[107480], 95.00th=[137364], | 99.00th=[200279], 99.50th=[238027], 99.90th=[404751], 99.95th=[497026], | 99.99th=[497026] bw ( KiB/s): min= 7, max= 133, per=25.09%, avg=48.18, stdev=22.06, samples=254 iops : min= 1, max= 33, avg=11.41, stdev= 5.55, samples=254 lat (usec) : 20=0.03%, 50=1.17%, 100=4.62%, 250=0.46%, 500=0.10% lat (usec) : 750=0.03%, 1000=0.07% lat (msec) : 2=7.16%, 4=3.71%, 10=6.41%, 20=8.98%, 50=34.86% lat (msec) : 100=24.22%, 250=7.91%, 500=0.23%, 750=0.03% cpu : usr=0.06%, sys=5.22%, ctx=6216, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=143980: Mon Aug 10 21:16:25 2026 read: IOPS=11, BW=46.2KiB/s (47.3kB/s)(6028KiB/130610msec) clat (usec): min=33, max=285454, avg=40594.82, stdev=31469.39 lat (usec): min=33, max=285455, avg=40603.12, stdev=31468.78 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 72], 20.00th=[ 18220], | 30.00th=[ 23725], 40.00th=[ 28705], 50.00th=[ 34866], 60.00th=[ 41681], | 70.00th=[ 50070], 80.00th=[ 61080], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[141558], 99.50th=[166724], 99.90th=[252707], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 103, per=25.48%, avg=46.63, stdev=21.09, samples=252 iops : min= 1, max= 25, avg=11.02, stdev= 5.30, samples=252 write: IOPS=11, BW=47.9KiB/s (49.1kB/s)(6260KiB/130610msec); 0 zone resets clat (usec): min=1003, max=889794, avg=44111.89, stdev=50659.94 lat (usec): min=1004, max=889797, avg=44115.05, stdev=50659.47 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1319], 10.00th=[ 1549], 20.00th=[ 4113], | 30.00th=[ 8979], 40.00th=[ 20841], 50.00th=[ 32113], 60.00th=[ 44827], | 70.00th=[ 58983], 80.00th=[ 74974], 90.00th=[103285], 95.00th=[129500], | 99.00th=[183501], 99.50th=[231736], 99.90th=[501220], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 133, per=24.85%, avg=47.71, stdev=19.71, samples=256 iops : min= 1, max= 33, avg=11.29, stdev= 4.97, samples=256 lat (usec) : 50=0.85%, 100=4.82%, 250=0.13%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=6.54%, 4=3.48%, 10=6.41%, 20=8.89%, 50=35.38% lat (msec) : 100=25.26%, 250=7.68%, 500=0.20%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.36%, ctx=6323, 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=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=143981: Mon Aug 10 21:16:25 2026 read: IOPS=11, BW=46.8KiB/s (47.9kB/s)(6052KiB/129316msec) clat (usec): min=32, max=760307, avg=40116.41, stdev=36525.86 lat (usec): min=32, max=760309, avg=40119.11, stdev=36525.84 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 75], 20.00th=[ 17171], | 30.00th=[ 22676], 40.00th=[ 28181], 50.00th=[ 32900], 60.00th=[ 39584], | 70.00th=[ 49021], 80.00th=[ 60556], 90.00th=[ 79168], 95.00th=[ 98042], | 99.00th=[139461], 99.50th=[173016], 99.90th=[256902], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 104, per=25.79%, avg=47.19, stdev=21.15, samples=250 iops : min= 1, max= 26, avg=11.18, stdev= 5.34, samples=250 write: IOPS=12, BW=48.2KiB/s (49.4kB/s)(6236KiB/129316msec); 0 zone resets clat (usec): min=945, max=876151, avg=43742.55, stdev=50466.96 lat (usec): min=946, max=876155, avg=43745.49, stdev=50467.39 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1336], 10.00th=[ 1549], 20.00th=[ 4047], | 30.00th=[ 8848], 40.00th=[ 18220], 50.00th=[ 30540], 60.00th=[ 43254], | 70.00th=[ 57934], 80.00th=[ 74974], 90.00th=[103285], 95.00th=[128451], | 99.00th=[198181], 99.50th=[256902], 99.90th=[333448], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 119, per=25.00%, avg=47.99, stdev=20.51, samples=253 iops : min= 1, max= 29, avg=11.38, stdev= 5.16, samples=253 lat (usec) : 50=0.88%, 100=4.79%, 250=0.42%, 500=0.20%, 1000=0.13% lat (msec) : 2=6.74%, 4=3.45%, 10=6.41%, 20=10.48%, 50=34.44% lat (msec) : 100=24.19%, 250=7.49%, 500=0.33%, 1000=0.07% cpu : usr=0.07%, sys=5.42%, ctx=6236, majf=0, minf=19 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=183KiB/s (188kB/s), 45.4KiB/s-46.8KiB/s (46.5kB/s-47.9kB/s), io=23.4MiB (24.6MB), run=129316-130867msec WRITE: bw=192KiB/s (197kB/s), 47.9KiB/s-48.6KiB/s (49.1kB/s-49.7kB/s), io=24.6MiB (25.7MB), run=129316-130867msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143973: Mon Aug 10 21:19:10 2026 read: IOPS=5, BW=20.3KiB/s (20.8kB/s)(5992KiB/294800msec) clat (msec): min=5, max=845, avg=41.09, stdev=41.50 lat (msec): min=5, max=845, avg=41.09, stdev=41.50 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 81], 95.00th=[ 112], | 99.00th=[ 184], 99.50th=[ 253], 99.90th=[ 338], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 80, per=29.05%, avg=23.53, stdev=15.06, samples=490 iops : min= 1, max= 20, avg= 5.24, stdev= 3.81, samples=490 write: IOPS=5, BW=21.4KiB/s (21.9kB/s)(6296KiB/294800msec); 0 zone resets clat (msec): min=36, max=541, avg=147.93, stdev=68.46 lat (msec): min=36, max=541, avg=147.93, stdev=68.46 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 78], 20.00th=[ 93], | 30.00th=[ 105], 40.00th=[ 117], 50.00th=[ 132], 60.00th=[ 148], | 70.00th=[ 169], 80.00th=[ 199], 90.00th=[ 245], 95.00th=[ 284], | 99.00th=[ 368], 99.50th=[ 401], 99.90th=[ 464], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 55, per=25.06%, avg=21.05, stdev= 9.51, samples=573 iops : min= 1, max= 13, avg= 4.62, stdev= 2.42, samples=573 lat (msec) : 10=1.69%, 20=11.82%, 50=24.15%, 100=21.55%, 250=35.64% lat (msec) : 500=5.08%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.37%, ctx=5652, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143974: Mon Aug 10 21:19:10 2026 read: IOPS=5, BW=20.1KiB/s (20.6kB/s)(5940KiB/295479msec) clat (msec): min=5, max=833, avg=39.48, stdev=41.14 lat (msec): min=5, max=833, avg=39.48, stdev=41.14 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 53], 90.00th=[ 79], 95.00th=[ 101], | 99.00th=[ 171], 99.50th=[ 199], 99.90th=[ 550], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 103, per=28.58%, avg=23.15, stdev=15.48, samples=494 iops : min= 1, max= 25, avg= 5.15, stdev= 3.92, samples=494 write: IOPS=5, BW=21.5KiB/s (21.0kB/s)(6348KiB/295479msec); 0 zone resets clat (msec): min=33, max=494, avg=148.99, stdev=68.68 lat (msec): min=33, max=494, avg=148.99, stdev=68.68 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 80], 20.00th=[ 94], | 30.00th=[ 107], 40.00th=[ 120], 50.00th=[ 132], 60.00th=[ 150], | 70.00th=[ 169], 80.00th=[ 197], 90.00th=[ 243], 95.00th=[ 288], | 99.00th=[ 384], 99.50th=[ 422], 99.90th=[ 489], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 7, max= 55, per=25.14%, avg=21.12, stdev= 9.42, samples=577 iops : min= 1, max= 13, avg= 4.64, stdev= 2.40, samples=577 lat (msec) : 10=1.63%, 20=12.40%, 50=24.32%, 100=20.38%, 250=36.36% lat (msec) : 500=4.85%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.38%, ctx=5541, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143975: Mon Aug 10 21:19:10 2026 read: IOPS=5, BW=20.4KiB/s (20.9kB/s)(6028KiB/295039msec) clat (msec): min=5, max=554, avg=41.53, stdev=40.52 lat (msec): min=5, max=554, avg=41.53, stdev=40.52 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 56], 90.00th=[ 79], 95.00th=[ 107], | 99.00th=[ 194], 99.50th=[ 243], 99.90th=[ 550], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 95, per=28.27%, avg=22.90, stdev=15.66, samples=507 iops : min= 1, max= 23, avg= 5.08, stdev= 3.94, samples=507 write: IOPS=5, BW=21.2KiB/s (21.7kB/s)(6260KiB/295039msec); 0 zone resets clat (msec): min=40, max=960, avg=148.25, stdev=71.82 lat (msec): min=40, max=960, avg=148.26, stdev=71.82 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 78], 20.00th=[ 92], | 30.00th=[ 106], 40.00th=[ 118], 50.00th=[ 133], 60.00th=[ 150], | 70.00th=[ 167], 80.00th=[ 194], 90.00th=[ 243], 95.00th=[ 288], | 99.00th=[ 355], 99.50th=[ 397], 99.90th=[ 776], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 63, per=24.99%, avg=20.99, stdev= 9.33, samples=572 iops : min= 1, max= 15, avg= 4.60, stdev= 2.38, samples=572 lat (msec) : 10=1.69%, 20=11.43%, 50=24.15%, 100=22.14%, 250=35.64% lat (msec) : 500=4.79%, 750=0.10%, 1000=0.07% cpu : usr=0.04%, sys=1.36%, ctx=5661, 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=143976: Mon Aug 10 21:19:10 2026 read: IOPS=5, BW=20.4KiB/s (20.9kB/s)(6052KiB/296199msec) clat (msec): min=5, max=539, avg=41.42, stdev=40.69 lat (msec): min=5, max=539, avg=41.43, stdev=40.69 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 56], 90.00th=[ 82], 95.00th=[ 114], | 99.00th=[ 194], 99.50th=[ 279], 99.90th=[ 506], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 95, per=28.93%, avg=23.43, stdev=15.75, samples=498 iops : min= 1, max= 23, avg= 5.22, stdev= 3.96, samples=498 write: IOPS=5, BW=21.1KiB/s (21.6kB/s)(6236KiB/296199msec); 0 zone resets clat (msec): min=37, max=993, avg=149.53, stdev=73.42 lat (msec): min=37, max=993, avg=149.53, stdev=73.42 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 66], 10.00th=[ 78], 20.00th=[ 94], | 30.00th=[ 107], 40.00th=[ 122], 50.00th=[ 134], 60.00th=[ 150], | 70.00th=[ 171], 80.00th=[ 197], 90.00th=[ 243], 95.00th=[ 279], | 99.00th=[ 384], 99.50th=[ 435], 99.90th=[ 768], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 48, per=24.78%, avg=20.81, stdev= 9.46, samples=574 iops : min= 1, max= 12, avg= 4.56, stdev= 2.42, samples=574 lat (msec) : 10=1.89%, 20=11.91%, 50=24.25%, 100=20.61%, 250=36.65% lat (msec) : 500=4.52%, 750=0.10%, 1000=0.07% cpu : usr=0.04%, sys=1.38%, ctx=5632, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=81.1KiB/s (83.0kB/s), 20.1KiB/s-20.4KiB/s (20.6kB/s-20.9kB/s), io=23.4MiB (24.6MB), run=294800-296199msec WRITE: bw=84.9KiB/s (86.9kB/s), 21.1KiB/s-21.5KiB/s (21.6kB/s-21.0kB/s), io=24.6MiB (25.7MB), run=294800-296199msec 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=144046: Mon Aug 10 21:19:59 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(5920KiB/35338msec) clat (usec): min=36, max=222238, avg=47903.54, stdev=37488.79 lat (usec): min=36, max=222239, avg=47905.01, stdev=37488.75 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 1991], | 30.00th=[ 29754], 40.00th=[ 35914], 50.00th=[ 43779], 60.00th=[ 52691], | 70.00th=[ 63701], 80.00th=[ 77071], 90.00th=[ 95945], 95.00th=[112722], | 99.00th=[168821], 99.50th=[177210], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 61, max= 381, per=24.94%, avg=166.32, stdev=67.64, samples=69 iops : min= 3, max= 23, avg= 9.61, stdev= 4.24, samples=69 write: IOPS=11, BW=180KiB/s (185kB/s)(6368KiB/35338msec); 0 zone resets clat (usec): min=1444, max=310359, avg=43598.92, stdev=49405.59 lat (usec): min=1445, max=310360, avg=43647.13, stdev=49518.07 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 1991], 10.00th=[ 3490], 20.00th=[ 6849], | 30.00th=[ 10552], 40.00th=[ 15401], 50.00th=[ 23462], 60.00th=[ 38011], | 70.00th=[ 55837], 80.00th=[ 76022], 90.00th=[104334], 95.00th=[139461], | 99.00th=[252707], 99.50th=[299893], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 62, max= 414, per=25.66%, avg=179.86, stdev=71.39, samples=69 iops : min= 3, max= 25, avg=10.46, stdev= 4.50, samples=69 lat (usec) : 50=0.91%, 100=7.68%, 250=0.39%, 500=0.13%, 750=0.13% lat (msec) : 2=3.26%, 4=3.52%, 10=8.85%, 20=10.68%, 50=26.43% lat (msec) : 100=27.73%, 250=9.77%, 500=0.52% cpu : usr=0.06%, sys=5.77%, ctx=1436, 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=144047: Mon Aug 10 21:19:59 2026 read: IOPS=9, BW=160KiB/s (164kB/s)(5744KiB/35901msec) clat (usec): min=35, max=250479, avg=50514.09, stdev=40400.68 lat (usec): min=36, max=250480, avg=50517.36, stdev=40399.19 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 95], | 30.00th=[ 31851], 40.00th=[ 38536], 50.00th=[ 46400], 60.00th=[ 55313], | 70.00th=[ 65274], 80.00th=[ 78119], 90.00th=[101188], 95.00th=[124257], | 99.00th=[168821], 99.50th=[223347], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 24, max= 352, per=24.22%, avg=161.54, stdev=76.32, samples=69 iops : min= 1, max= 22, avg= 9.32, stdev= 4.82, samples=69 write: IOPS=11, BW=182KiB/s (187kB/s)(6544KiB/35901msec); 0 zone resets clat (usec): min=1542, max=300389, avg=42475.85, stdev=49776.31 lat (usec): min=1543, max=300390, avg=42478.25, stdev=49776.16 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 1893], 10.00th=[ 2212], 20.00th=[ 6259], | 30.00th=[ 10290], 40.00th=[ 14091], 50.00th=[ 21365], 60.00th=[ 34866], | 70.00th=[ 51119], 80.00th=[ 80217], 90.00th=[111674], 95.00th=[135267], | 99.00th=[227541], 99.50th=[258999], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 31, max= 479, per=25.98%, avg=182.14, stdev=88.28, samples=70 iops : min= 1, max= 29, avg=10.60, stdev= 5.54, samples=70 lat (usec) : 50=1.82%, 100=7.68%, 500=0.13% lat (msec) : 2=3.91%, 4=4.04%, 10=7.42%, 20=11.59%, 50=24.74% lat (msec) : 100=26.69%, 250=11.33%, 500=0.65% cpu : usr=0.07%, sys=5.50%, ctx=1443, 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=144048: Mon Aug 10 21:19:59 2026 read: IOPS=11, BW=179KiB/s (183kB/s)(6256KiB/35039msec) clat (usec): min=38, max=202081, avg=46103.05, stdev=37115.78 lat (usec): min=39, max=202082, avg=46104.29, stdev=37115.81 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 56], 10.00th=[ 67], 20.00th=[ 91], | 30.00th=[ 27395], 40.00th=[ 35914], 50.00th=[ 43779], 60.00th=[ 51119], | 70.00th=[ 60031], 80.00th=[ 71828], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[158335], 99.50th=[164627], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 31, max= 383, per=27.11%, avg=180.85, stdev=73.80, samples=67 iops : min= 1, max= 23, avg=10.52, stdev= 4.64, samples=67 write: IOPS=10, BW=172KiB/s (176kB/s)(6032KiB/35039msec); 0 zone resets clat (usec): min=1642, max=333783, avg=43967.41, stdev=49123.23 lat (usec): min=1644, max=333785, avg=43971.75, stdev=49121.66 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1958], 10.00th=[ 2802], 20.00th=[ 5997], | 30.00th=[ 10290], 40.00th=[ 14746], 50.00th=[ 26346], 60.00th=[ 41157], | 70.00th=[ 55313], 80.00th=[ 74974], 90.00th=[109577], 95.00th=[145753], | 99.00th=[204473], 99.50th=[299893], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 25, max= 381, per=24.13%, avg=169.15, stdev=79.08, samples=68 iops : min= 1, max= 23, avg= 9.79, stdev= 5.03, samples=68 lat (usec) : 50=1.82%, 100=8.85%, 250=0.13%, 750=0.26% lat (msec) : 2=2.73%, 4=3.78%, 10=8.59%, 20=9.11%, 50=26.56% lat (msec) : 100=27.99%, 250=9.90%, 500=0.26% cpu : usr=0.06%, sys=5.21%, ctx=1415, 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=144049: Mon Aug 10 21:19:59 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34739msec) clat (usec): min=30, max=249784, avg=47160.21, stdev=41822.50 lat (usec): min=31, max=249785, avg=47161.34, stdev=41822.53 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 76], | 30.00th=[ 22938], 40.00th=[ 33817], 50.00th=[ 44303], 60.00th=[ 53740], | 70.00th=[ 63701], 80.00th=[ 78119], 90.00th=[103285], 95.00th=[119014], | 99.00th=[185598], 99.50th=[217056], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 62, max= 403, per=27.04%, avg=180.38, stdev=72.55, samples=65 iops : min= 3, max= 25, avg=10.51, stdev= 4.64, samples=65 write: IOPS=11, BW=180KiB/s (184kB/s)(6256KiB/34739msec); 0 zone resets clat (usec): min=1523, max=413830, avg=41890.25, stdev=51676.68 lat (usec): min=1525, max=413832, avg=41892.70, stdev=51676.50 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1811], 10.00th=[ 2180], 20.00th=[ 5080], | 30.00th=[ 8094], 40.00th=[ 12780], 50.00th=[ 21365], 60.00th=[ 37487], | 70.00th=[ 51643], 80.00th=[ 68682], 90.00th=[104334], 95.00th=[141558], | 99.00th=[238027], 99.50th=[287310], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 24, max= 446, per=26.10%, avg=182.99, stdev=85.63, samples=67 iops : min= 1, max= 27, avg=10.67, stdev= 5.43, samples=67 lat (usec) : 50=1.82%, 100=10.55%, 250=1.04%, 500=0.13%, 750=0.26% lat (msec) : 2=3.65%, 4=4.82%, 10=9.38%, 20=7.55%, 50=23.83% lat (msec) : 100=25.78%, 250=10.81%, 500=0.39% cpu : usr=0.07%, sys=5.21%, ctx=1337, 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=667KiB/s (683kB/s), 160KiB/s-179KiB/s (164kB/s-183kB/s), io=23.4MiB (24.5MB), run=34739-35901msec WRITE: bw=702KiB/s (719kB/s), 172KiB/s-182KiB/s (176kB/s-187kB/s), io=24.6MiB (25.8MB), run=34739-35901msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144042: Mon Aug 10 21:20:49 2026 read: IOPS=4, BW=69.2KiB/s (70.8kB/s)(5920KiB/85591msec) clat (msec): min=6, max=553, avg=46.88, stdev=60.10 lat (msec): min=6, max=553, avg=46.89, stdev=60.10 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 54], 90.00th=[ 95], 95.00th=[ 148], | 99.00th=[ 363], 99.50th=[ 456], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 30, max= 384, per=29.76%, avg=82.72, stdev=59.72, samples=141 iops : min= 1, max= 24, avg= 4.35, stdev= 3.79, samples=141 write: IOPS=4, BW=74.4KiB/s (76.2kB/s)(6368KiB/85591msec); 0 zone resets clat (msec): min=47, max=706, avg=169.94, stdev=88.88 lat (msec): min=47, max=706, avg=169.94, stdev=88.87 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 77], 10.00th=[ 88], 20.00th=[ 104], | 30.00th=[ 114], 40.00th=[ 130], 50.00th=[ 146], 60.00th=[ 163], | 70.00th=[ 188], 80.00th=[ 222], 90.00th=[ 300], 95.00th=[ 359], | 99.00th=[ 443], 99.50th=[ 550], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 30, max= 192, per=26.88%, avg=78.77, stdev=36.24, samples=159 iops : min= 1, max= 12, avg= 4.13, stdev= 2.34, samples=159 lat (msec) : 10=1.04%, 20=10.81%, 50=25.52%, 100=15.10%, 250=38.80% lat (msec) : 500=8.33%, 750=0.39% cpu : usr=0.04%, sys=1.24%, ctx=1399, 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=144043: Mon Aug 10 21:20:49 2026 read: IOPS=4, BW=66.8KiB/s (68.4kB/s)(5744KiB/85997msec) clat (msec): min=6, max=458, avg=46.96, stdev=50.34 lat (msec): min=6, max=458, avg=46.96, stdev=50.34 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 94], 95.00th=[ 155], | 99.00th=[ 264], 99.50th=[ 326], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 23, max= 381, per=30.78%, avg=85.58, stdev=58.27, samples=130 iops : min= 1, max= 23, avg= 4.57, stdev= 3.66, samples=130 write: IOPS=4, BW=76.1KiB/s (77.9kB/s)(6544KiB/85997msec); 0 zone resets clat (msec): min=46, max=509, avg=168.84, stdev=84.06 lat (msec): min=46, max=509, avg=168.85, stdev=84.07 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 72], 10.00th=[ 87], 20.00th=[ 103], | 30.00th=[ 115], 40.00th=[ 130], 50.00th=[ 148], 60.00th=[ 167], | 70.00th=[ 192], 80.00th=[ 230], 90.00th=[ 284], 95.00th=[ 347], | 99.00th=[ 439], 99.50th=[ 460], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 30, max= 160, per=26.35%, avg=77.20, stdev=36.15, samples=164 iops : min= 1, max= 10, avg= 4.02, stdev= 2.31, samples=164 lat (msec) : 10=0.78%, 20=9.51%, 50=24.22%, 100=17.71%, 250=39.19% lat (msec) : 500=8.33%, 750=0.26% cpu : usr=0.04%, sys=1.22%, ctx=1320, 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=144044: Mon Aug 10 21:20:49 2026 read: IOPS=4, BW=75.5KiB/s (77.3kB/s)(6256KiB/82839msec) clat (msec): min=7, max=446, avg=41.51, stdev=46.04 lat (msec): min=7, max=446, avg=41.51, stdev=46.04 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 49], 90.00th=[ 80], 95.00th=[ 130], | 99.00th=[ 255], 99.50th=[ 305], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 30, max= 320, per=32.16%, avg=89.41, stdev=61.32, samples=138 iops : min= 1, max= 20, avg= 4.79, stdev= 3.89, samples=138 write: IOPS=4, BW=72.8KiB/s (74.6kB/s)(6032KiB/82839msec); 0 zone resets clat (msec): min=47, max=613, avg=175.63, stdev=95.94 lat (msec): min=47, max=613, avg=175.64, stdev=95.94 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 75], 10.00th=[ 86], 20.00th=[ 103], | 30.00th=[ 115], 40.00th=[ 130], 50.00th=[ 148], 60.00th=[ 171], | 70.00th=[ 199], 80.00th=[ 239], 90.00th=[ 305], 95.00th=[ 376], | 99.00th=[ 542], 99.50th=[ 600], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 23, max= 160, per=25.52%, avg=74.78, stdev=37.03, samples=158 iops : min= 1, max= 10, avg= 3.87, stdev= 2.38, samples=158 lat (msec) : 10=0.78%, 20=14.19%, 50=27.08%, 100=13.67%, 250=34.77% lat (msec) : 500=8.98%, 750=0.52% cpu : usr=0.04%, sys=1.32%, ctx=1411, 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=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=144045: Mon Aug 10 21:20:49 2026 read: IOPS=4, BW=71.3KiB/s (72.0kB/s)(6032KiB/84629msec) clat (msec): min=7, max=334, avg=45.38, stdev=46.87 lat (msec): min=7, max=334, avg=45.39, stdev=46.87 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 58], 90.00th=[ 107], 95.00th=[ 146], | 99.00th=[ 271], 99.50th=[ 305], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 281, per=31.34%, avg=87.13, stdev=57.08, samples=135 iops : min= 1, max= 17, avg= 4.66, stdev= 3.64, samples=135 write: IOPS=4, BW=73.9KiB/s (75.7kB/s)(6256KiB/84629msec); 0 zone resets clat (msec): min=39, max=638, avg=172.05, stdev=92.31 lat (msec): min=39, max=638, avg=172.06, stdev=92.31 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 78], 10.00th=[ 86], 20.00th=[ 104], | 30.00th=[ 117], 40.00th=[ 131], 50.00th=[ 140], 60.00th=[ 165], | 70.00th=[ 199], 80.00th=[ 232], 90.00th=[ 296], 95.00th=[ 355], | 99.00th=[ 550], 99.50th=[ 567], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 23, max= 160, per=25.89%, avg=75.86, stdev=37.84, samples=162 iops : min= 1, max= 10, avg= 3.94, stdev= 2.42, samples=162 lat (msec) : 10=1.30%, 20=12.24%, 50=24.09%, 100=15.76%, 250=37.76% lat (msec) : 500=7.94%, 750=0.91% cpu : usr=0.04%, sys=1.20%, ctx=1419, 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=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=279KiB/s (285kB/s), 66.8KiB/s-75.5KiB/s (68.4kB/s-77.3kB/s), io=23.4MiB (24.5MB), run=82839-85997msec WRITE: bw=293KiB/s (300kB/s), 72.8KiB/s-76.1KiB/s (74.6kB/s-77.9kB/s), io=24.6MiB (25.8MB), run=82839-85997msec 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=144068: Mon Aug 10 21:21:03 2026 read: IOPS=2, BW=2937KiB/s (3007kB/s)(7168KiB/2441msec) clat (msec): min=80, max=229, avg=136.59, stdev=51.05 lat (msec): min=80, max=229, avg=136.60, stdev=51.05 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 104], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 123], 60.00th=[ 138], | 70.00th=[ 138], 80.00th=[ 178], 90.00th=[ 230], 95.00th=[ 230], | 99.00th=[ 230], 99.50th=[ 230], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 2015, max= 4511, per=76.58%, avg=3529.67, stdev=1330.73, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2098KiB/s (2148kB/s)(5120KiB/2441msec); 0 zone resets clat (msec): min=175, max=436, avg=287.04, stdev=95.19 lat (msec): min=175, max=436, avg=287.13, stdev=95.18 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 268], 60.00th=[ 268], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 1503, max= 2031, per=29.34%, avg=1893.00, stdev=260.08, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=33.33% cpu : usr=0.00%, sys=3.98%, ctx=54, 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=144069: Mon Aug 10 21:21:03 2026 read: IOPS=0, BW=461KiB/s (472kB/s)(2048KiB/4443msec) clat (msec): min=123, max=133, avg=128.13, stdev= 7.06 lat (msec): min=123, max=133, avg=128.13, stdev= 7.06 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 133], | 70.00th=[ 133], 80.00th=[ 133], 90.00th=[ 133], 95.00th=[ 133], | 99.00th=[ 133], 99.50th=[ 133], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 1582, max= 1980, per=38.64%, avg=1781.00, stdev=281.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2305KiB/s (2360kB/s)(10.0MiB/4443msec); 0 zone resets clat (msec): min=207, max=827, avg=403.96, stdev=198.38 lat (msec): min=207, max=828, avg=404.30, stdev=198.36 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 215], | 30.00th=[ 249], 40.00th=[ 321], 50.00th=[ 347], 60.00th=[ 359], | 70.00th=[ 388], 80.00th=[ 489], 90.00th=[ 642], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1582, max= 4063, per=39.05%, avg=2520.00, stdev=1039.08, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=4.89%, ctx=115, 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=144070: Mon Aug 10 21:21:03 2026 read: IOPS=1, BW=1454KiB/s (1488kB/s)(6144KiB/4227msec) clat (msec): min=92, max=486, avg=270.14, stdev=158.93 lat (msec): min=92, max=486, avg=270.14, stdev=158.93 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 313], | 70.00th=[ 405], 80.00th=[ 405], 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= 1980, max= 4063, per=54.79%, avg=2525.25, stdev=1025.49, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1454KiB/s (1488kB/s)(6144KiB/4227msec); 0 zone resets clat (msec): min=194, max=712, avg=397.43, stdev=207.99 lat (msec): min=194, max=712, avg=397.67, stdev=208.09 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 493], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1523, max= 4063, per=37.09%, avg=2393.50, stdev=1135.18, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=2.82%, ctx=56, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144071: Mon Aug 10 21:21:03 2026 read: IOPS=1, BW=1417KiB/s (1452kB/s)(5120KiB/3612msec) clat (msec): min=72, max=252, avg=142.42, stdev=68.72 lat (msec): min=72, max=252, avg=142.42, stdev=68.72 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 101], 40.00th=[ 101], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 253], 95.00th=[ 253], | 99.00th=[ 253], 99.50th=[ 253], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 3961, max= 4031, per=86.70%, avg=3996.00, stdev=49.50, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1984KiB/s (2032kB/s)(7168KiB/3612msec); 0 zone resets clat (msec): min=199, max=862, avg=399.37, stdev=261.20 lat (msec): min=200, max=862, avg=399.47, stdev=261.20 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 209], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 296], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 676], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1965, max= 3282, per=34.94%, avg=2254.60, stdev=574.94, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=3.27%, ctx=55, 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=4609KiB/s (4720kB/s), 461KiB/s-2937KiB/s (472kB/s-3007kB/s), io=20.0MiB (20.0MB), run=2441-4443msec WRITE: bw=6453KiB/s (6608kB/s), 1454KiB/s-2305KiB/s (1488kB/s-2360kB/s), io=28.0MiB (29.4MB), run=2441-4443msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144073: Mon Aug 10 21:21:03 2026 read: IOPS=3, BW=3104KiB/s (3179kB/s)(7168KiB/2309msec) clat (usec): min=608, max=203302, avg=146795.82, stdev=68569.86 lat (usec): min=610, max=203303, avg=146797.47, stdev=68569.82 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[139461], | 30.00th=[149947], 40.00th=[149947], 50.00th=[162530], 60.00th=[173016], | 70.00th=[173016], 80.00th=[198181], 90.00th=[202376], 95.00th=[202376], | 99.00th=[202376], 99.50th=[202376], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 2043, max= 4557, per=61.77%, avg=3497.67, stdev=1302.79, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2217KiB/s (2271kB/s)(5120KiB/2309msec); 0 zone resets clat (msec): min=193, max=330, avg=254.39, stdev=54.66 lat (msec): min=193, max=330, avg=254.47, stdev=54.64 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 262], 60.00th=[ 262], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 1946, max= 4071, per=33.89%, avg=2686.67, stdev=1199.85, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 500=25.00% cpu : usr=0.00%, sys=15.16%, ctx=161, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144074: Mon Aug 10 21:21:03 2026 read: IOPS=0, BW=566KiB/s (580kB/s)(2048KiB/3617msec) clat (msec): min=131, max=245, avg=188.46, stdev=80.53 lat (msec): min=131, max=245, avg=188.46, stdev=80.53 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 132], 50.00th=[ 132], 60.00th=[ 247], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 247], 95.00th=[ 247], | 99.00th=[ 247], 99.50th=[ 247], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 1436, max= 2043, per=30.72%, avg=1739.50, stdev=429.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2831KiB/s (2899kB/s)(10.0MiB/3617msec); 0 zone resets clat (msec): min=141, max=589, avg=323.55, stdev=149.26 lat (msec): min=141, max=589, avg=323.64, stdev=149.26 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 188], | 30.00th=[ 194], 40.00th=[ 251], 50.00th=[ 271], 60.00th=[ 288], | 70.00th=[ 342], 80.00th=[ 485], 90.00th=[ 485], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1436, max= 4071, per=32.64%, avg=2587.67, stdev=1106.69, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (msec) : 250=41.67%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=13.30%, ctx=161, 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=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=144075: Mon Aug 10 21:21:03 2026 read: IOPS=1, BW=1745KiB/s (1787kB/s)(6144KiB/3521msec) clat (usec): min=957, max=307271, avg=162661.93, stdev=129549.79 lat (usec): min=958, max=307271, avg=162663.22, stdev=129549.54 clat percentiles (usec): | 1.00th=[ 955], 5.00th=[ 955], 10.00th=[ 955], 20.00th=[ 2212], | 30.00th=[ 2212], 40.00th=[202376], 50.00th=[202376], 60.00th=[225444], | 70.00th=[238027], 80.00th=[238027], 90.00th=[308282], 95.00th=[308282], | 99.00th=[308282], 99.50th=[308282], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 2035, max= 3893, per=44.18%, avg=2501.50, stdev=927.67, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1745KiB/s (1787kB/s)(6144KiB/3521msec); 0 zone resets clat (msec): min=64, max=1002, avg=423.19, stdev=316.68 lat (msec): min=64, max=1002, avg=423.28, stdev=316.69 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 347], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1946, max= 3047, per=28.61%, avg=2267.75, stdev=521.36, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=25.00%, 500=33.33%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.82%, ctx=232, 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=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=144076: Mon Aug 10 21:21:03 2026 read: IOPS=1, BW=1561KiB/s (1599kB/s)(5120KiB/3279msec) clat (usec): min=415, max=493211, avg=127580.73, stdev=213475.48 lat (usec): min=416, max=493211, avg=127581.91, stdev=213475.09 clat percentiles (usec): | 1.00th=[ 416], 5.00th=[ 416], 10.00th=[ 416], 20.00th=[ 416], | 30.00th=[ 553], 40.00th=[ 553], 50.00th=[ 857], 60.00th=[ 857], | 70.00th=[143655], 80.00th=[143655], 90.00th=[492831], 95.00th=[492831], | 99.00th=[492831], 99.50th=[492831], 99.90th=[492831], 99.95th=[492831], | 99.99th=[492831] bw ( KiB/s): min= 4071, max= 4087, per=72.04%, avg=4079.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2186KiB/s (2238kB/s)(7168KiB/3279msec); 0 zone resets clat (msec): min=128, max=766, avg=376.81, stdev=240.04 lat (msec): min=128, max=766, avg=376.94, stdev=240.04 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 159], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 326], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 609], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1544, max= 4071, per=29.62%, avg=2348.20, stdev=986.93, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=9.30%, ctx=166, 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=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=5662KiB/s (5798kB/s), 566KiB/s-3104KiB/s (580kB/s-3179kB/s), io=20.0MiB (20.0MB), run=2309-3617msec WRITE: bw=7927KiB/s (8117kB/s), 1745KiB/s-2831KiB/s (1787kB/s-2899kB/s), io=28.0MiB (29.4MB), run=2309-3617msec 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=144085: Mon Aug 10 21:21:17 2026 read: IOPS=1, BW=4523KiB/s (4631kB/s)(12.0MiB/2717msec) clat (msec): min=836, max=896, avg=858.27, stdev=33.17 lat (msec): min=836, max=896, avg=858.27, stdev=33.17 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=17.93%, ctx=415, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144087: Mon Aug 10 21:21:17 2026 read: IOPS=0, BW=1346KiB/s (1378kB/s)(4096KiB/3043msec) clat (nsec): min=875276k, max=875276k, avg=875276455.00, stdev= 0.00 lat (nsec): min=875279k, max=875279k, avg=875278977.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2692KiB/s (2757kB/s)(8192KiB/3043msec); 0 zone resets clat (msec): min=848, max=1227, avg=1038.05, stdev=268.30 lat (msec): min=850, max=1228, avg=1039.64, stdev=266.81 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 1234], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8126, max= 8126, per=92.31%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.75%, ctx=76, 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=144089: Mon Aug 10 21:21:17 2026 write: IOPS=0, BW=3301KiB/s (3381kB/s)(12.0MiB/3722msec); 0 zone resets clat (msec): min=370, max=2106, avg=1193.93, stdev=871.41 lat (msec): min=372, max=2107, avg=1194.73, stdev=870.96 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 8175, max= 8192, per=92.96%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.51%, ctx=69, 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=144090: Mon Aug 10 21:21:17 2026 write: IOPS=0, BW=3970KiB/s (4066kB/s)(12.0MiB/3095msec); 0 zone resets clat (msec): min=332, max=1816, avg=954.44, stdev=770.68 lat (msec): min=333, max=1817, avg=956.26, stdev=769.85 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 8015, max= 8015, per=91.05%, avg=8015.00, 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=0.06%, sys=5.98%, ctx=59, 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=5384KiB/s (5513kB/s), 1346KiB/s-4523KiB/s (1378kB/s-4631kB/s), io=16.0MiB (16.8MB), run=2717-3043msec WRITE: bw=8804KiB/s (9015kB/s), 2692KiB/s-3970KiB/s (2757kB/s-4066kB/s), io=32.0MiB (33.6MB), run=3043-3722msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144083: Mon Aug 10 21:21:18 2026 read: IOPS=2, BW=9366KiB/s (9591kB/s)(12.0MiB/1312msec) clat (msec): min=283, max=456, avg=358.07, stdev=89.17 lat (msec): min=283, max=456, avg=358.07, stdev=89.17 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 456], 80.00th=[ 456], 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= 6849, max= 8159, per=100.00%, avg=7504.00, stdev=926.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=14.34%, ctx=64, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144084: Mon Aug 10 21:21:18 2026 read: IOPS=0, BW=1033KiB/s (1058kB/s)(4096KiB/3964msec) clat (nsec): min=1866.3M, max=1866.3M, avg=1866277273.00, stdev= 0.00 lat (nsec): min=1866.3M, max=1866.3M, avg=1866280145.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1871], 5.00th=[ 1871], 10.00th=[ 1871], 20.00th=[ 1871], | 30.00th=[ 1871], 40.00th=[ 1871], 50.00th=[ 1871], 60.00th=[ 1871], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 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=2067KiB/s (2116kB/s)(8192KiB/3964msec); 0 zone resets clat (msec): min=886, max=1063, avg=975.07, stdev=125.70 lat (msec): min=886, max=1066, avg=976.67, stdev=127.28 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 1062], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] 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) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.47%, ctx=61, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144086: Mon Aug 10 21:21:18 2026 write: IOPS=0, BW=3006KiB/s (3078kB/s)(12.0MiB/4088msec); 0 zone resets clat (msec): min=345, max=1789, avg=1303.84, stdev=830.15 lat (msec): min=345, max=1789, avg=1304.43, stdev=830.29 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 1770], 50.00th=[ 1770], 60.00th=[ 1770], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.06%, ctx=66, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144088: Mon Aug 10 21:21:18 2026 write: IOPS=1, BW=5139KiB/s (5263kB/s)(12.0MiB/2391msec); 0 zone resets clat (msec): min=414, max=1234, avg=753.02, stdev=428.19 lat (msec): min=414, max=1236, avg=754.46, stdev=429.13 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 5535, max= 8159, per=85.43%, avg=6847.00, stdev=1855.45, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.08%, sys=6.36%, ctx=58, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4133KiB/s (4232kB/s), 1033KiB/s-9366KiB/s (1058kB/s-9591kB/s), io=16.0MiB (16.8MB), run=1312-3964msec WRITE: bw=8016KiB/s (8208kB/s), 2067KiB/s-5139KiB/s (2116kB/s-5263kB/s), io=32.0MiB (33.6MB), run=2391-4088msec