== sanity test 398b: DIO and buffer IO race ============== 15:49:24 (1787860164) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.21706 s, 9.6 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=179205: Thu Aug 27 15:51:42 2026 read: IOPS=12, BW=49.6KiB/s (50.7kB/s)(5992KiB/120924msec) clat (usec): min=31, max=294253, avg=44323.84, stdev=29222.46 lat (usec): min=31, max=294255, avg=44325.97, stdev=29222.05 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 11600], 10.00th=[ 16581], 20.00th=[ 21890], | 30.00th=[ 26608], 40.00th=[ 31589], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 53216], 80.00th=[ 65799], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[133694], 99.50th=[158335], 99.90th=[265290], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 15, max= 119, per=24.93%, avg=49.11, stdev=18.45, samples=239 iops : min= 3, max= 29, avg=11.62, stdev= 4.64, samples=239 write: IOPS=13, BW=52.1KiB/s (53.3kB/s)(6296KiB/120924msec); 0 zone resets clat (usec): min=953, max=238525, avg=34553.72, stdev=35185.27 lat (usec): min=953, max=238527, avg=34558.91, stdev=35185.48 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1418], 10.00th=[ 2147], 20.00th=[ 4555], | 30.00th=[ 8094], 40.00th=[ 17171], 50.00th=[ 25297], 60.00th=[ 33424], | 70.00th=[ 43779], 80.00th=[ 57410], 90.00th=[ 84411], 95.00th=[106431], | 99.00th=[149947], 99.50th=[179307], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 7, max= 134, per=25.03%, avg=51.57, stdev=21.64, samples=239 iops : min= 1, max= 33, avg=12.24, stdev= 5.45, samples=239 lat (usec) : 50=0.26%, 100=1.17%, 250=0.20%, 750=0.03%, 1000=0.10% lat (msec) : 2=4.75%, 4=4.52%, 10=8.11%, 20=10.68%, 50=40.85% lat (msec) : 100=24.02%, 250=5.24%, 500=0.07% cpu : usr=0.09%, sys=5.84%, ctx=6861, 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=179207: Thu Aug 27 15:51:42 2026 read: IOPS=12, BW=48.7KiB/s (49.9kB/s)(5940KiB/121848msec) clat (usec): min=45, max=240446, avg=44081.48, stdev=27671.22 lat (usec): min=45, max=240447, avg=44087.63, stdev=27664.26 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10290], 10.00th=[ 16581], 20.00th=[ 22152], | 30.00th=[ 27132], 40.00th=[ 32637], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 52691], 80.00th=[ 62129], 90.00th=[ 80217], 95.00th=[ 96994], | 99.00th=[130548], 99.50th=[141558], 99.90th=[204473], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 5, max= 95, per=24.33%, avg=47.92, stdev=18.44, samples=240 iops : min= 1, max= 23, avg=11.32, stdev= 4.64, samples=240 write: IOPS=13, BW=52.1KiB/s (53.3kB/s)(6348KiB/121848msec); 0 zone resets clat (usec): min=862, max=361942, avg=35417.44, stdev=36307.98 lat (usec): min=864, max=361944, avg=35425.08, stdev=36330.48 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1303], 10.00th=[ 1991], 20.00th=[ 4146], | 30.00th=[ 8160], 40.00th=[ 17171], 50.00th=[ 25560], 60.00th=[ 35390], | 70.00th=[ 46400], 80.00th=[ 60556], 90.00th=[ 83362], 95.00th=[106431], | 99.00th=[149947], 99.50th=[177210], 99.90th=[229639], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 7, max= 143, per=24.74%, avg=50.95, stdev=21.46, samples=240 iops : min= 1, max= 35, avg=12.09, stdev= 5.43, samples=240 lat (usec) : 50=0.13%, 100=1.46%, 250=0.16%, 500=0.10%, 1000=0.13% lat (msec) : 2=5.14%, 4=4.75%, 10=7.52%, 20=11.07%, 50=39.23% lat (msec) : 100=24.90%, 250=5.37%, 500=0.03% cpu : usr=0.09%, sys=5.57%, ctx=6668, 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=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=179208: Thu Aug 27 15:51:42 2026 read: IOPS=12, BW=50.7KiB/s (51.9kB/s)(6028KiB/118848msec) clat (usec): min=31, max=216125, avg=42830.26, stdev=29258.17 lat (usec): min=31, max=216126, avg=42833.43, stdev=29257.62 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 314], 10.00th=[ 15401], 20.00th=[ 21103], | 30.00th=[ 26608], 40.00th=[ 31327], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 50070], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[154141], 99.50th=[179307], 99.90th=[212861], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 7, max= 119, per=25.52%, avg=50.27, stdev=20.23, samples=235 iops : min= 1, max= 29, avg=11.91, stdev= 5.09, samples=235 write: IOPS=13, BW=52.7KiB/s (53.9kB/s)(6260KiB/118848msec); 0 zone resets clat (usec): min=910, max=198288, avg=34546.04, stdev=35205.94 lat (usec): min=911, max=198289, avg=34552.32, stdev=35204.16 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1319], 10.00th=[ 1926], 20.00th=[ 4080], | 30.00th=[ 7635], 40.00th=[ 14222], 50.00th=[ 24511], 60.00th=[ 33424], | 70.00th=[ 45351], 80.00th=[ 61080], 90.00th=[ 85459], 95.00th=[105382], | 99.00th=[145753], 99.50th=[170918], 99.90th=[196084], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 7, max= 135, per=25.44%, avg=52.41, stdev=20.93, samples=234 iops : min= 1, max= 33, avg=12.45, stdev= 5.26, samples=234 lat (usec) : 50=0.46%, 100=1.76%, 250=0.20%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=5.34%, 4=4.75%, 10=7.81%, 20=10.64%, 50=40.82% lat (msec) : 100=22.75%, 250=5.27% cpu : usr=0.09%, sys=5.65%, ctx=6643, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179209: Thu Aug 27 15:51:42 2026 read: IOPS=12, BW=49.7KiB/s (50.9kB/s)(6052KiB/121817msec) clat (usec): min=39, max=231854, avg=43857.85, stdev=29339.25 lat (usec): min=39, max=231855, avg=43859.58, stdev=29339.78 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 6587], 10.00th=[ 16319], 20.00th=[ 21890], | 30.00th=[ 27132], 40.00th=[ 32113], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 52167], 80.00th=[ 62653], 90.00th=[ 80217], 95.00th=[ 96994], | 99.00th=[154141], 99.50th=[170918], 99.90th=[214959], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 11, max= 120, per=25.01%, avg=49.26, stdev=19.05, samples=239 iops : min= 2, max= 30, avg=11.66, stdev= 4.81, samples=239 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(6236KiB/121817msec); 0 zone resets clat (usec): min=1016, max=261262, avg=35463.55, stdev=35704.24 lat (usec): min=1017, max=261264, avg=35467.49, stdev=35706.84 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1434], 10.00th=[ 2073], 20.00th=[ 4621], | 30.00th=[ 8586], 40.00th=[ 17171], 50.00th=[ 26084], 60.00th=[ 34866], | 70.00th=[ 46924], 80.00th=[ 60556], 90.00th=[ 84411], 95.00th=[104334], | 99.00th=[152044], 99.50th=[175113], 99.90th=[246416], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 7, max= 127, per=24.56%, avg=50.58, stdev=21.22, samples=240 iops : min= 1, max= 31, avg=11.99, stdev= 5.34, samples=240 lat (usec) : 50=0.29%, 100=1.79%, 250=0.13%, 500=0.13% lat (msec) : 2=4.88%, 4=4.13%, 10=7.68%, 20=10.74%, 50=40.23% lat (msec) : 100=24.84%, 250=5.11%, 500=0.03% cpu : usr=0.08%, sys=5.60%, ctx=6720, 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=197KiB/s (202kB/s), 48.7KiB/s-50.7KiB/s (49.9kB/s-51.9kB/s), io=23.4MiB (24.6MB), run=118848-121848msec WRITE: bw=206KiB/s (211kB/s), 51.2KiB/s-52.7KiB/s (52.4kB/s-53.9kB/s), io=24.6MiB (25.7MB), run=118848-121848msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179200: Thu Aug 27 15:52:19 2026 read: IOPS=9, BW=37.8KiB/s (38.7kB/s)(5992KiB/158630msec) clat (msec): min=5, max=1055, avg=41.36, stdev=44.92 lat (msec): min=5, max=1055, avg=41.36, stdev=44.92 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 59], 90.00th=[ 88], 95.00th=[ 124], | 99.00th=[ 182], 99.50th=[ 197], 99.90th=[ 264], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 7, max= 143, per=25.69%, avg=38.28, stdev=25.46, samples=305 iops : min= 1, max= 35, avg= 8.92, stdev= 6.40, samples=305 write: IOPS=9, BW=39.7KiB/s (40.6kB/s)(6296KiB/158630msec); 0 zone resets clat (msec): min=12, max=413, avg=61.13, stdev=44.78 lat (msec): min=12, max=413, avg=61.13, stdev=44.78 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 71], 80.00th=[ 90], 90.00th=[ 117], 95.00th=[ 142], | 99.00th=[ 230], 99.50th=[ 288], 99.90th=[ 317], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 151, per=25.28%, avg=39.44, stdev=24.33, samples=311 iops : min= 1, max= 37, avg= 9.21, stdev= 6.11, samples=311 lat (msec) : 10=2.28%, 20=16.28%, 50=46.09%, 100=23.63%, 250=11.23% lat (msec) : 500=0.46%, 2000=0.03% cpu : usr=0.06%, sys=1.88%, ctx=4834, 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=179201: Thu Aug 27 15:52:19 2026 read: IOPS=9, BW=37.3KiB/s (38.2kB/s)(5940KiB/159277msec) clat (msec): min=5, max=905, avg=41.45, stdev=43.46 lat (msec): min=5, max=905, avg=41.45, stdev=43.46 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 62], 90.00th=[ 92], 95.00th=[ 121], | 99.00th=[ 180], 99.50th=[ 211], 99.90th=[ 292], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 158, per=25.64%, avg=38.20, stdev=26.94, samples=303 iops : min= 1, max= 39, avg= 8.89, stdev= 6.78, samples=303 write: IOPS=9, BW=39.9KiB/s (40.8kB/s)(6348KiB/159277msec); 0 zone resets clat (msec): min=9, max=385, avg=61.29, stdev=44.75 lat (msec): min=9, max=385, avg=61.30, stdev=44.76 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 91], 90.00th=[ 124], 95.00th=[ 150], | 99.00th=[ 220], 99.50th=[ 251], 99.90th=[ 309], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 119, per=25.28%, avg=39.43, stdev=25.04, samples=313 iops : min= 1, max= 29, avg= 9.20, stdev= 6.32, samples=313 lat (msec) : 10=2.70%, 20=16.73%, 50=44.99%, 100=23.05%, 250=12.17% lat (msec) : 500=0.33%, 1000=0.03% cpu : usr=0.06%, sys=1.93%, ctx=4907, 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=179202: Thu Aug 27 15:52:19 2026 read: IOPS=9, BW=37.6KiB/s (38.5kB/s)(6028KiB/160173msec) clat (msec): min=5, max=327, avg=42.13, stdev=39.45 lat (msec): min=5, max=327, avg=42.13, stdev=39.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 60], 90.00th=[ 94], 95.00th=[ 129], | 99.00th=[ 188], 99.50th=[ 220], 99.90th=[ 279], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 7, max= 135, per=25.50%, avg=38.00, stdev=24.88, samples=307 iops : min= 1, max= 33, avg= 8.84, stdev= 6.25, samples=307 write: IOPS=9, BW=39.1KiB/s (40.0kB/s)(6260KiB/160173msec); 0 zone resets clat (msec): min=10, max=941, avg=61.50, stdev=49.07 lat (msec): min=10, max=941, avg=61.50, stdev=49.07 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 72], 80.00th=[ 91], 90.00th=[ 121], 95.00th=[ 146], | 99.00th=[ 211], 99.50th=[ 271], 99.90th=[ 418], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 119, per=24.90%, avg=38.84, stdev=24.75, samples=311 iops : min= 1, max= 29, avg= 9.05, stdev= 6.22, samples=311 lat (msec) : 10=2.47%, 20=16.21%, 50=45.87%, 100=22.79%, 250=12.27% lat (msec) : 500=0.36%, 1000=0.03% cpu : usr=0.06%, sys=1.93%, ctx=4909, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179203: Thu Aug 27 15:52:19 2026 read: IOPS=9, BW=37.9KiB/s (38.8kB/s)(6052KiB/159612msec) clat (msec): min=5, max=313, avg=42.39, stdev=38.99 lat (msec): min=5, max=313, avg=42.39, stdev=38.99 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 47], 80.00th=[ 63], 90.00th=[ 93], 95.00th=[ 128], | 99.00th=[ 182], 99.50th=[ 215], 99.90th=[ 309], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 143, per=25.99%, avg=38.72, stdev=26.36, samples=305 iops : min= 1, max= 35, avg= 9.02, stdev= 6.63, samples=305 write: IOPS=9, BW=39.1KiB/s (40.0kB/s)(6236KiB/159612msec); 0 zone resets clat (msec): min=12, max=932, avg=60.96, stdev=48.19 lat (msec): min=12, max=932, avg=60.97, stdev=48.19 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 69], 80.00th=[ 89], 90.00th=[ 118], 95.00th=[ 148], | 99.00th=[ 215], 99.50th=[ 268], 99.90th=[ 363], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 136, per=25.03%, avg=39.05, stdev=24.61, samples=311 iops : min= 1, max= 34, avg= 9.11, stdev= 6.20, samples=311 lat (msec) : 10=2.12%, 20=16.67%, 50=44.89%, 100=23.73%, 250=12.17% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=1.94%, ctx=4835, 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=150KiB/s (154kB/s), 37.3KiB/s-37.9KiB/s (38.2kB/s-38.8kB/s), io=23.4MiB (24.6MB), run=158630-160173msec WRITE: bw=157KiB/s (161kB/s), 39.1KiB/s-39.9KiB/s (40.0kB/s-40.8kB/s), io=24.6MiB (25.7MB), run=158630-160173msec 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=179256: Thu Aug 27 15:53:02 2026 read: IOPS=11, BW=184KiB/s (188kB/s)(5920KiB/32211msec) clat (usec): min=43, max=185764, avg=45352.73, stdev=30341.85 lat (usec): min=44, max=185766, avg=45354.34, stdev=30342.33 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 73], 10.00th=[ 12518], 20.00th=[ 23200], | 30.00th=[ 30016], 40.00th=[ 34341], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 54789], 80.00th=[ 66323], 90.00th=[ 84411], 95.00th=[102237], | 99.00th=[149947], 99.50th=[173016], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 62, max= 350, per=24.86%, avg=182.00, stdev=62.08, samples=63 iops : min= 3, max= 21, avg=10.57, stdev= 3.93, samples=63 write: IOPS=12, BW=198KiB/s (202kB/s)(6368KiB/32211msec); 0 zone resets clat (usec): min=1337, max=163815, avg=38173.85, stdev=35004.26 lat (usec): min=1337, max=163818, avg=38193.02, stdev=35020.07 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 2180], 10.00th=[ 3687], 20.00th=[ 6718], | 30.00th=[ 13173], 40.00th=[ 19530], 50.00th=[ 27919], 60.00th=[ 36439], | 70.00th=[ 49021], 80.00th=[ 66323], 90.00th=[ 88605], 95.00th=[115868], | 99.00th=[141558], 99.50th=[154141], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 31, max= 413, per=25.55%, avg=196.75, stdev=78.20, samples=63 iops : min= 1, max= 25, avg=11.49, stdev= 4.93, samples=63 lat (usec) : 50=0.26%, 100=2.99%, 250=0.39%, 500=0.13% lat (msec) : 2=1.95%, 4=4.69%, 10=7.55%, 20=11.07%, 50=38.67% lat (msec) : 100=26.04%, 250=6.25% cpu : usr=0.08%, sys=6.62%, ctx=1807, 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=179257: Thu Aug 27 15:53:02 2026 read: IOPS=12, BW=194KiB/s (199kB/s)(5744KiB/29561msec) clat (usec): min=38, max=171630, avg=39955.82, stdev=28758.24 lat (usec): min=38, max=171632, avg=39970.28, stdev=28741.38 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 62], 10.00th=[ 74], 20.00th=[ 19268], | 30.00th=[ 25822], 40.00th=[ 31327], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 60031], 90.00th=[ 77071], 95.00th=[ 89654], | 99.00th=[130548], 99.50th=[168821], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 55, max= 377, per=26.44%, avg=193.57, stdev=68.11, samples=58 iops : min= 3, max= 23, avg=11.29, stdev= 4.28, samples=58 write: IOPS=13, BW=221KiB/s (227kB/s)(6544KiB/29561msec); 0 zone resets clat (usec): min=1526, max=193834, avg=36854.61, stdev=36253.25 lat (usec): min=1527, max=193837, avg=36894.40, stdev=36225.57 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2409], 10.00th=[ 3720], 20.00th=[ 6587], | 30.00th=[ 9634], 40.00th=[ 17171], 50.00th=[ 25035], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 65274], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[158335], 99.50th=[187696], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 62, max= 416, per=29.33%, avg=225.84, stdev=81.23, samples=57 iops : min= 3, max= 26, avg=13.32, stdev= 5.14, samples=57 lat (usec) : 50=1.17%, 100=4.43%, 250=0.91%, 500=0.26%, 750=0.13% lat (msec) : 2=2.08%, 4=4.56%, 10=10.03%, 20=8.98%, 50=38.15% lat (msec) : 100=25.26%, 250=4.04% cpu : usr=0.06%, sys=6.77%, ctx=1738, 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=179258: Thu Aug 27 15:53:02 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(6256KiB/32690msec) clat (usec): min=36, max=245801, avg=44590.51, stdev=30074.75 lat (usec): min=36, max=245802, avg=44592.75, stdev=30074.77 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 262], 20.00th=[ 24249], | 30.00th=[ 29492], 40.00th=[ 35390], 50.00th=[ 40633], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 64226], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[137364], 99.50th=[177210], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 63, max= 448, per=26.28%, avg=192.34, stdev=78.81, samples=64 iops : min= 3, max= 28, avg=11.22, stdev= 5.00, samples=64 write: IOPS=11, BW=185KiB/s (189kB/s)(6032KiB/32690msec); 0 zone resets clat (usec): min=1385, max=190379, avg=39737.85, stdev=36033.07 lat (usec): min=1387, max=190383, avg=39740.92, stdev=36033.29 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2835], 10.00th=[ 4178], 20.00th=[ 7701], | 30.00th=[ 12518], 40.00th=[ 21890], 50.00th=[ 31327], 60.00th=[ 38536], | 70.00th=[ 49546], 80.00th=[ 68682], 90.00th=[ 95945], 95.00th=[112722], | 99.00th=[152044], 99.50th=[156238], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 31, max= 383, per=23.62%, avg=181.84, stdev=68.50, samples=64 iops : min= 1, max= 23, avg=10.56, stdev= 4.31, samples=64 lat (usec) : 50=0.65%, 100=3.39%, 250=1.04%, 500=0.26%, 750=0.26% lat (msec) : 2=1.30%, 4=3.26%, 10=7.94%, 20=8.33%, 50=40.23% lat (msec) : 100=27.08%, 250=6.25% cpu : usr=0.09%, sys=6.14%, ctx=1877, 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=179259: Thu Aug 27 15:53:02 2026 read: IOPS=11, BW=188KiB/s (193kB/s)(6032KiB/32011msec) clat (usec): min=50, max=189476, avg=44027.72, stdev=29295.32 lat (usec): min=51, max=189477, avg=44054.66, stdev=29320.91 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 231], 20.00th=[ 21627], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 54264], 80.00th=[ 64226], 90.00th=[ 82314], 95.00th=[ 96994], | 99.00th=[135267], 99.50th=[152044], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 63, max= 380, per=25.56%, avg=187.10, stdev=71.09, samples=63 iops : min= 3, max= 23, avg=10.90, stdev= 4.53, samples=63 write: IOPS=12, BW=195KiB/s (200kB/s)(6256KiB/32011msec); 0 zone resets clat (usec): min=1622, max=164966, avg=38766.41, stdev=35438.81 lat (usec): min=1624, max=164969, avg=38775.74, stdev=35438.70 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2900], 10.00th=[ 3982], 20.00th=[ 6587], | 30.00th=[ 10421], 40.00th=[ 18482], 50.00th=[ 28705], 60.00th=[ 38011], | 70.00th=[ 50070], 80.00th=[ 69731], 90.00th=[ 92799], 95.00th=[107480], | 99.00th=[145753], 99.50th=[158335], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 64, max= 383, per=25.36%, avg=195.29, stdev=65.79, samples=63 iops : min= 4, max= 23, avg=11.40, stdev= 4.13, samples=63 lat (usec) : 100=4.30%, 250=0.65%, 500=0.26%, 750=0.13%, 1000=0.13% lat (msec) : 2=1.69%, 4=3.91%, 10=9.64%, 20=9.38%, 50=36.72% lat (msec) : 100=27.60%, 250=5.60% cpu : usr=0.07%, sys=6.41%, ctx=1808, 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=733KiB/s (750kB/s), 184KiB/s-194KiB/s (188kB/s-199kB/s), io=23.4MiB (24.5MB), run=29561-32690msec WRITE: bw=771KiB/s (789kB/s), 185KiB/s-221KiB/s (189kB/s-227kB/s), io=24.6MiB (25.8MB), run=29561-32690msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179251: Thu Aug 27 15:53:13 2026 read: IOPS=8, BW=134KiB/s (137kB/s)(5920KiB/44283msec) clat (msec): min=6, max=257, avg=46.37, stdev=39.30 lat (msec): min=6, max=257, avg=46.38, stdev=39.30 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 97], 95.00th=[ 134], | 99.00th=[ 201], 99.50th=[ 241], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 414, per=24.45%, avg=132.05, stdev=78.92, samples=86 iops : min= 1, max= 25, avg= 7.47, stdev= 5.01, samples=86 write: IOPS=8, BW=144KiB/s (147kB/s)(6368KiB/44283msec); 0 zone resets clat (msec): min=15, max=295, avg=67.57, stdev=44.41 lat (msec): min=15, max=295, avg=67.57, stdev=44.41 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 63], | 70.00th=[ 79], 80.00th=[ 95], 90.00th=[ 128], 95.00th=[ 165], | 99.00th=[ 236], 99.50th=[ 268], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 30, max= 416, per=24.94%, avg=141.91, stdev=76.67, samples=87 iops : min= 1, max= 26, avg= 8.08, stdev= 4.90, samples=87 lat (msec) : 10=1.17%, 20=10.81%, 50=44.66%, 100=30.21%, 250=12.76% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.92%, ctx=1209, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179252: Thu Aug 27 15:53:13 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5744KiB/44288msec) clat (msec): min=6, max=212, avg=45.08, stdev=36.03 lat (msec): min=6, max=212, avg=45.08, stdev=36.03 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 68], 90.00th=[ 101], 95.00th=[ 128], | 99.00th=[ 165], 99.50th=[ 203], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 31, max= 509, per=24.27%, avg=131.06, stdev=86.24, samples=85 iops : min= 1, max= 31, avg= 7.40, stdev= 5.49, samples=85 write: IOPS=9, BW=148KiB/s (151kB/s)(6544KiB/44288msec); 0 zone resets clat (msec): min=15, max=344, avg=68.40, stdev=42.34 lat (msec): min=15, max=344, avg=68.40, stdev=42.34 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 70], | 70.00th=[ 83], 80.00th=[ 97], 90.00th=[ 122], 95.00th=[ 144], | 99.00th=[ 224], 99.50th=[ 245], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 384, per=25.43%, avg=144.72, stdev=75.59, samples=87 iops : min= 1, max= 24, avg= 8.26, stdev= 4.81, samples=87 lat (msec) : 10=0.78%, 20=10.03%, 50=46.09%, 100=29.04%, 250=13.93% lat (msec) : 500=0.13% cpu : usr=0.07%, sys=1.98%, ctx=1253, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179254: Thu Aug 27 15:53:13 2026 read: IOPS=8, BW=144KiB/s (147kB/s)(6256KiB/43497msec) clat (msec): min=6, max=277, avg=44.00, stdev=34.55 lat (msec): min=6, max=277, avg=44.00, stdev=34.55 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 64], 90.00th=[ 87], 95.00th=[ 116], | 99.00th=[ 157], 99.50th=[ 218], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 384, per=26.63%, avg=143.78, stdev=85.63, samples=86 iops : min= 1, max= 24, avg= 8.20, stdev= 5.40, samples=86 write: IOPS=8, BW=139KiB/s (142kB/s)(6032KiB/43497msec); 0 zone resets clat (msec): min=16, max=294, avg=69.26, stdev=42.95 lat (msec): min=16, max=294, avg=69.27, stdev=42.95 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 35], | 30.00th=[ 43], 40.00th=[ 49], 50.00th=[ 57], 60.00th=[ 68], | 70.00th=[ 80], 80.00th=[ 99], 90.00th=[ 124], 95.00th=[ 161], | 99.00th=[ 218], 99.50th=[ 284], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 352, per=24.40%, avg=138.85, stdev=67.96, samples=85 iops : min= 1, max= 22, avg= 7.88, stdev= 4.33, samples=85 lat (msec) : 10=0.78%, 20=11.46%, 50=44.53%, 100=30.60%, 250=12.24% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=2.04%, ctx=1239, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179255: Thu Aug 27 15:53:13 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(6032KiB/43678msec) clat (msec): min=6, max=275, avg=46.66, stdev=36.98 lat (msec): min=6, max=275, avg=46.66, stdev=36.98 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 103], 95.00th=[ 126], | 99.00th=[ 169], 99.50th=[ 184], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 448, per=25.81%, avg=139.37, stdev=81.43, samples=84 iops : min= 1, max= 28, avg= 7.92, stdev= 5.14, samples=84 write: IOPS=8, BW=143KiB/s (147kB/s)(6256KiB/43678msec); 0 zone resets clat (msec): min=15, max=253, avg=66.53, stdev=40.15 lat (msec): min=15, max=253, avg=66.53, stdev=40.15 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 55], 60.00th=[ 64], | 70.00th=[ 73], 80.00th=[ 93], 90.00th=[ 125], 95.00th=[ 144], | 99.00th=[ 213], 99.50th=[ 239], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 382, per=24.95%, avg=141.99, stdev=71.83, samples=86 iops : min= 1, max= 23, avg= 8.08, stdev= 4.56, samples=86 lat (msec) : 10=0.39%, 20=10.42%, 50=45.57%, 100=30.21%, 250=13.15% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.85%, ctx=1161, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=541KiB/s (554kB/s), 130KiB/s-144KiB/s (133kB/s-147kB/s), io=23.4MiB (24.5MB), run=43497-44288msec WRITE: bw=569KiB/s (583kB/s), 139KiB/s-148KiB/s (142kB/s-151kB/s), io=24.6MiB (25.8MB), run=43497-44288msec 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=179273: Thu Aug 27 15:53:30 2026 read: IOPS=1, BW=1883KiB/s (1928kB/s)(7168KiB/3807msec) clat (msec): min=190, max=362, avg=266.95, stdev=64.07 lat (msec): min=190, max=362, avg=266.95, stdev=64.07 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 275], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 317], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1662, max= 3886, per=58.08%, avg=2841.75, stdev=1151.20, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 write: IOPS=1, BW=1345KiB/s (1377kB/s)(5120KiB/3807msec); 0 zone resets clat (msec): min=178, max=532, avg=379.32, stdev=144.20 lat (msec): min=178, max=532, avg=379.40, stdev=144.19 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 1845, max= 4087, per=36.57%, avg=2505.75, stdev=1058.40, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=33.33%, 500=58.33%, 750=8.33% cpu : usr=0.00%, sys=16.34%, ctx=258, 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=179274: Thu Aug 27 15:53:30 2026 read: IOPS=0, BW=489KiB/s (501kB/s)(2048KiB/4185msec) clat (usec): min=663, max=803860, avg=402261.99, stdev=567945.42 lat (usec): min=664, max=803862, avg=402263.58, stdev=567946.32 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[ 668], | 30.00th=[ 668], 40.00th=[ 668], 50.00th=[ 668], 60.00th=[801113], | 70.00th=[801113], 80.00th=[801113], 90.00th=[801113], 95.00th=[801113], | 99.00th=[801113], 99.50th=[801113], 99.90th=[801113], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 1943, max= 2048, per=40.78%, avg=1995.50, stdev=74.25, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2447KiB/s (2506kB/s)(10.0MiB/4185msec); 0 zone resets clat (msec): min=210, max=496, avg=330.22, stdev=107.00 lat (msec): min=210, max=496, avg=330.30, stdev=107.01 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 213], | 30.00th=[ 226], 40.00th=[ 271], 50.00th=[ 296], 60.00th=[ 309], | 70.00th=[ 397], 80.00th=[ 418], 90.00th=[ 472], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 1845, max= 6144, per=46.26%, avg=3169.20, stdev=1837.24, samples=5 iops : min= 1, max= 6, avg= 2.40, stdev= 2.19, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=58.33%, 1000=8.33% cpu : usr=0.00%, sys=18.33%, ctx=192, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179275: Thu Aug 27 15:53:30 2026 read: IOPS=1, BW=1692KiB/s (1733kB/s)(6144KiB/3631msec) clat (usec): min=516, max=382097, avg=138314.14, stdev=130748.90 lat (usec): min=517, max=382098, avg=138315.27, stdev=130748.80 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 71828], | 30.00th=[ 71828], 40.00th=[ 96994], 50.00th=[ 96994], 60.00th=[116917], | 70.00th=[160433], 80.00th=[160433], 90.00th=[383779], 95.00th=[383779], | 99.00th=[383779], 99.50th=[383779], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 2048, max= 4087, per=67.48%, avg=3302.00, stdev=1097.43, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=1, BW=1692KiB/s (1733kB/s)(6144KiB/3631msec); 0 zone resets clat (msec): min=269, max=947, avg=452.04, stdev=275.96 lat (msec): min=269, max=947, avg=452.13, stdev=275.94 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 321], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1490, max= 4087, per=34.32%, avg=2351.25, stdev=1174.54, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=16.67%, 250=16.67%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=16.34%, ctx=164, 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=179276: Thu Aug 27 15:53:30 2026 read: IOPS=1, BW=1503KiB/s (1539kB/s)(5120KiB/3406msec) clat (usec): min=506, max=271613, avg=89785.18, stdev=125917.85 lat (usec): min=507, max=271613, avg=89786.20, stdev=125917.61 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 1811], 40.00th=[ 1811], 50.00th=[ 1942], 60.00th=[ 1942], | 70.00th=[173016], 80.00th=[173016], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 2048, max= 6131, per=83.58%, avg=4089.50, stdev=2887.12, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2105KiB/s (2155kB/s)(7168KiB/3406msec); 0 zone resets clat (msec): min=165, max=799, avg=415.37, stdev=270.33 lat (msec): min=165, max=799, avg=415.64, stdev=270.31 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 186], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 342], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 785], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1845, max= 4096, per=34.48%, avg=2362.40, stdev=971.97, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (usec) : 750=8.33% lat (msec) : 2=16.67%, 250=33.33%, 500=25.00%, 1000=16.67% cpu : usr=0.03%, sys=19.09%, ctx=158, 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=4894KiB/s (5011kB/s), 489KiB/s-1883KiB/s (501kB/s-1928kB/s), io=20.0MiB (20.0MB), run=3406-4185msec WRITE: bw=6851KiB/s (7016kB/s), 1345KiB/s-2447KiB/s (1377kB/s-2506kB/s), io=28.0MiB (29.4MB), run=3406-4185msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179278: Thu Aug 27 15:53:31 2026 read: IOPS=1, BW=1750KiB/s (1792kB/s)(7168KiB/4097msec) clat (msec): min=122, max=404, avg=242.51, stdev=111.72 lat (msec): min=122, max=404, avg=242.51, stdev=111.72 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 155], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 184], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 376], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1444, max= 3946, per=54.15%, avg=2292.80, stdev=957.93, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1250KiB/s (1280kB/s)(5120KiB/4097msec); 0 zone resets clat (msec): min=193, max=593, avg=474.78, stdev=161.26 lat (msec): min=193, max=593, avg=475.00, stdev=161.34 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1906, max= 2043, per=33.64%, avg=1994.00, stdev=61.96, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=41.67%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=8.35%, ctx=120, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179279: Thu Aug 27 15:53:31 2026 read: IOPS=0, BW=447KiB/s (458kB/s)(2048KiB/4577msec) clat (msec): min=159, max=638, avg=398.99, stdev=339.15 lat (msec): min=159, max=638, avg=398.99, stdev=339.15 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1460, max= 1996, per=40.81%, avg=1728.00, stdev=379.01, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2237KiB/s (2291kB/s)(10.0MiB/4577msec); 0 zone resets clat (msec): min=97, max=881, avg=373.25, stdev=263.08 lat (msec): min=97, max=881, avg=373.34, stdev=263.08 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 136], | 30.00th=[ 159], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 477], | 70.00th=[ 485], 80.00th=[ 575], 90.00th=[ 584], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1906, max= 4015, per=45.05%, avg=2670.33, stdev=1033.93, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=5.88%, ctx=94, 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=179280: Thu Aug 27 15:53:31 2026 read: IOPS=1, BW=1299KiB/s (1330kB/s)(6144KiB/4729msec) clat (msec): min=85, max=467, avg=253.07, stdev=125.03 lat (msec): min=85, max=467, avg=253.07, stdev=125.03 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 222], 50.00th=[ 222], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1935, max= 4063, per=59.16%, avg=2505.00, stdev=1039.30, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1299KiB/s (1330kB/s)(6144KiB/4729msec); 0 zone resets clat (msec): min=128, max=970, avg=519.37, stdev=285.84 lat (msec): min=128, max=970, avg=519.45, stdev=285.85 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 535], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1935, max= 4039, per=40.15%, avg=2379.80, stdev=927.77, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.02%, sys=6.51%, ctx=126, 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=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=179281: Thu Aug 27 15:53:31 2026 read: IOPS=1, BW=1059KiB/s (1084kB/s)(5120KiB/4837msec) clat (msec): min=97, max=535, avg=314.51, stdev=184.04 lat (msec): min=97, max=535, avg=314.52, stdev=184.04 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 99], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 535], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 1992, max= 4063, per=63.56%, avg=2691.33, stdev=1187.97, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1482KiB/s (1517kB/s)(7168KiB/4837msec); 0 zone resets clat (msec): min=148, max=931, avg=449.17, stdev=348.79 lat (msec): min=148, max=931, avg=449.26, stdev=348.78 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 167], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 232], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 919], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1935, max= 4039, per=40.45%, avg=2397.60, stdev=918.30, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=16.67% cpu : usr=0.04%, sys=5.65%, ctx=122, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4234KiB/s (4336kB/s), 447KiB/s-1750KiB/s (458kB/s-1792kB/s), io=20.0MiB (20.0MB), run=4097-4837msec WRITE: bw=5928KiB/s (6070kB/s), 1250KiB/s-2237KiB/s (1280kB/s-2291kB/s), io=28.0MiB (29.4MB), run=4097-4837msec 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=179288: Thu Aug 27 15:53:49 2026 read: IOPS=0, BW=1865KiB/s (1910kB/s)(12.0MiB/6589msec) clat (msec): min=869, max=3129, avg=2195.99, stdev=1180.17 lat (msec): min=869, max=3129, avg=2195.99, stdev=1180.17 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 2601], 50.00th=[ 2601], 60.00th=[ 2601], | 70.00th=[ 3138], 80.00th=[ 3138], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=8.00%, ctx=728, 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=179289: Thu Aug 27 15:53:49 2026 read: IOPS=0, BW=571KiB/s (584kB/s)(4096KiB/7176msec) clat (nsec): min=2415.8M, max=2415.8M, avg=2415792152.00, stdev= 0.00 lat (nsec): min=2415.8M, max=2415.8M, avg=2415793321.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2400], 5.00th=[ 2400], 10.00th=[ 2400], 20.00th=[ 2400], | 30.00th=[ 2400], 40.00th=[ 2400], 50.00th=[ 2400], 60.00th=[ 2400], | 70.00th=[ 2400], 80.00th=[ 2400], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1142KiB/s (1169kB/s)(8192KiB/7176msec); 0 zone resets clat (msec): min=1808, max=2877, avg=2343.16, stdev=755.59 lat (msec): min=1809, max=2877, avg=2343.54, stdev=755.65 clat percentiles (msec): | 1.00th=[ 1804], 5.00th=[ 1804], 10.00th=[ 1804], 20.00th=[ 1804], | 30.00th=[ 1804], 40.00th=[ 1804], 50.00th=[ 1804], 60.00th=[ 2869], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.03%, sys=3.99%, ctx=374, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179290: Thu Aug 27 15:53:49 2026 write: IOPS=0, BW=2165KiB/s (2216kB/s)(12.0MiB/5677msec); 0 zone resets clat (msec): min=350, max=3085, avg=1870.81, stdev=1392.82 lat (msec): min=350, max=3086, avg=1871.25, stdev=1392.99 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 2165], 50.00th=[ 2165], 60.00th=[ 2165], | 70.00th=[ 3071], 80.00th=[ 3071], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min=16318, max=16318, per=100.00%, avg=16318.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.50%, ctx=71, 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=179291: Thu Aug 27 15:53:49 2026 write: IOPS=0, BW=1860KiB/s (1905kB/s)(12.0MiB/6606msec); 0 zone resets clat (msec): min=1384, max=3042, avg=2200.76, stdev=829.02 lat (msec): min=1385, max=3043, avg=2201.75, stdev=829.54 clat percentiles (msec): | 1.00th=[ 1385], 5.00th=[ 1385], 10.00th=[ 1385], 20.00th=[ 1385], | 30.00th=[ 1385], 40.00th=[ 2165], 50.00th=[ 2165], 60.00th=[ 2165], | 70.00th=[ 3037], 80.00th=[ 3037], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.03%, sys=2.42%, ctx=54, 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=2283KiB/s (2338kB/s), 571KiB/s-1865KiB/s (584kB/s-1910kB/s), io=16.0MiB (16.8MB), run=6589-7176msec WRITE: bw=4566KiB/s (4676kB/s), 1142KiB/s-2165KiB/s (1169kB/s-2216kB/s), io=32.0MiB (33.6MB), run=5677-7176msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179293: Thu Aug 27 15:53:50 2026 read: IOPS=0, BW=1823KiB/s (1867kB/s)(12.0MiB/6741msec) clat (msec): min=287, max=3972, avg=2246.48, stdev=1853.42 lat (msec): min=287, max=3972, avg=2246.48, stdev=1853.42 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 2467], 50.00th=[ 2467], 60.00th=[ 2467], | 70.00th=[ 3977], 80.00th=[ 3977], 90.00th=[ 3977], 95.00th=[ 3977], | 99.00th=[ 3977], 99.50th=[ 3977], 99.90th=[ 3977], 99.95th=[ 3977], | 99.99th=[ 3977] 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) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.71%, ctx=49, 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=179294: Thu Aug 27 15:53:50 2026 read: IOPS=0, BW=590KiB/s (604kB/s)(4096KiB/6941msec) clat (nsec): min=4773.9M, max=4773.9M, avg=4773854076.00, stdev= 0.00 lat (nsec): min=4773.9M, max=4773.9M, avg=4773855462.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4799], 5.00th=[ 4799], 10.00th=[ 4799], 20.00th=[ 4799], | 30.00th=[ 4799], 40.00th=[ 4799], 50.00th=[ 4799], 60.00th=[ 4799], | 70.00th=[ 4799], 80.00th=[ 4799], 90.00th=[ 4799], 95.00th=[ 4799], | 99.00th=[ 4799], 99.50th=[ 4799], 99.90th=[ 4799], 99.95th=[ 4799], | 99.99th=[ 4799] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1180KiB/s (1209kB/s)(8192KiB/6941msec); 0 zone resets clat (msec): min=937, max=1220, avg=1079.06, stdev=200.14 lat (msec): min=943, max=1221, avg=1082.75, stdev=196.65 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] 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=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.73%, ctx=37, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179295: Thu Aug 27 15:53:50 2026 write: IOPS=0, BW=1684KiB/s (1725kB/s)(12.0MiB/7296msec); 0 zone resets clat (msec): min=138, max=6024, avg=2430.44, stdev=3151.59 lat (msec): min=138, max=6025, avg=2430.97, stdev=3151.75 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 6007], 80.00th=[ 6007], 90.00th=[ 6007], 95.00th=[ 6007], | 99.00th=[ 6007], 99.50th=[ 6007], 99.90th=[ 6007], 99.95th=[ 6007], | 99.99th=[ 6007] bw ( KiB/s): min= 8094, max= 8175, per=100.00%, avg=8134.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=1.78%, ctx=54, 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=179296: Thu Aug 27 15:53:50 2026 write: IOPS=0, BW=1817KiB/s (1860kB/s)(12.0MiB/6764msec); 0 zone resets clat (msec): min=1070, max=3381, avg=2251.85, stdev=1156.48 lat (msec): min=1071, max=3383, avg=2252.59, stdev=1156.85 clat percentiles (msec): | 1.00th=[ 1070], 5.00th=[ 1070], 10.00th=[ 1070], 20.00th=[ 1070], | 30.00th=[ 1070], 40.00th=[ 2299], 50.00th=[ 2299], 60.00th=[ 2299], | 70.00th=[ 3373], 80.00th=[ 3373], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.74%, ctx=54, 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=2360KiB/s (2417kB/s), 590KiB/s-1823KiB/s (604kB/s-1867kB/s), io=16.0MiB (16.8MB), run=6741-6941msec WRITE: bw=4491KiB/s (4599kB/s), 1180KiB/s-1817KiB/s (1209kB/s-1860kB/s), io=32.0MiB (33.6MB), run=6764-7296msec