== sanity test 398b: DIO and buffer IO race ============== 03:19:51 (1780384791) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.37569 s, 11.5 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=145927: Tue Jun 2 03:21:28 2026 read: IOPS=18, BW=72.4KiB/s (74.1kB/s)(5992KiB/82784msec) clat (usec): min=28, max=658079, avg=26102.99, stdev=24822.35 lat (usec): min=29, max=658081, avg=26105.13, stdev=24822.24 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 67], 10.00th=[ 192], 20.00th=[ 12649], | 30.00th=[ 16057], 40.00th=[ 18744], 50.00th=[ 22152], 60.00th=[ 26084], | 70.00th=[ 31589], 80.00th=[ 38011], 90.00th=[ 49021], 95.00th=[ 57410], | 99.00th=[ 86508], 99.50th=[110625], 99.90th=[181404], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 14, max= 167, per=24.84%, avg=71.79, stdev=26.15, samples=164 iops : min= 3, max= 41, avg=17.35, stdev= 6.52, samples=164 write: IOPS=19, BW=76.1KiB/s (77.9kB/s)(6296KiB/82784msec); 0 zone resets clat (usec): min=1112, max=243890, avg=27562.63, stdev=25842.62 lat (usec): min=1113, max=243892, avg=27567.83, stdev=25840.45 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1811], 10.00th=[ 2606], 20.00th=[ 4228], | 30.00th=[ 7701], 40.00th=[ 15270], 50.00th=[ 22152], 60.00th=[ 28181], | 70.00th=[ 36963], 80.00th=[ 46400], 90.00th=[ 62129], 95.00th=[ 74974], | 99.00th=[107480], 99.50th=[125305], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 23, max= 175, per=25.05%, avg=75.91, stdev=24.66, samples=163 iops : min= 5, max= 43, avg=18.39, stdev= 6.17, samples=163 lat (usec) : 50=0.52%, 100=3.42%, 250=1.07%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=3.12%, 4=6.77%, 10=8.33%, 20=21.58%, 50=41.60% lat (msec) : 100=12.21%, 250=1.04%, 750=0.03% cpu : usr=0.10%, sys=9.77%, ctx=7308, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145929: Tue Jun 2 03:21:28 2026 read: IOPS=17, BW=71.0KiB/s (73.7kB/s)(5940KiB/82546msec) clat (usec): min=35, max=781477, avg=27354.83, stdev=27840.61 lat (usec): min=36, max=781478, avg=27356.16, stdev=27840.66 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 8586], 20.00th=[ 13829], | 30.00th=[ 16712], 40.00th=[ 19530], 50.00th=[ 22414], 60.00th=[ 26608], | 70.00th=[ 32113], 80.00th=[ 39584], 90.00th=[ 51119], 95.00th=[ 59507], | 99.00th=[ 98042], 99.50th=[113771], 99.90th=[252707], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 151, per=24.82%, avg=71.74, stdev=24.42, samples=162 iops : min= 1, max= 37, avg=17.34, stdev= 6.14, samples=162 write: IOPS=19, BW=76.9KiB/s (78.7kB/s)(6348KiB/82546msec); 0 zone resets clat (usec): min=1121, max=186878, avg=26237.14, stdev=24702.88 lat (usec): min=1122, max=186879, avg=26238.98, stdev=24702.83 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1680], 10.00th=[ 2245], 20.00th=[ 3785], | 30.00th=[ 6980], 40.00th=[ 14222], 50.00th=[ 20841], 60.00th=[ 27395], | 70.00th=[ 34866], 80.00th=[ 44303], 90.00th=[ 58983], 95.00th=[ 73925], | 99.00th=[108528], 99.50th=[135267], 99.90th=[173016], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 7, max= 151, per=25.24%, avg=76.46, stdev=25.37, samples=162 iops : min= 1, max= 37, avg=18.52, stdev= 6.38, samples=162 lat (usec) : 50=0.42%, 100=3.19%, 250=0.59%, 500=0.10%, 750=0.16% lat (msec) : 2=3.87%, 4=7.19%, 10=8.33%, 20=21.88%, 50=40.82% lat (msec) : 100=12.47%, 250=0.91%, 500=0.03%, 1000=0.03% cpu : usr=0.10%, sys=9.97%, ctx=7221, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145931: Tue Jun 2 03:21:28 2026 read: IOPS=18, BW=72.7KiB/s (74.5kB/s)(6028KiB/82861msec) clat (usec): min=34, max=350406, avg=25518.86, stdev=19268.39 lat (usec): min=34, max=350406, avg=25520.34, stdev=19268.75 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 74], 10.00th=[ 7570], 20.00th=[ 12911], | 30.00th=[ 16057], 40.00th=[ 19006], 50.00th=[ 22414], 60.00th=[ 26346], | 70.00th=[ 31327], 80.00th=[ 36439], 90.00th=[ 45876], 95.00th=[ 55837], | 99.00th=[ 82314], 99.50th=[101188], 99.90th=[166724], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 16, max= 143, per=25.29%, avg=73.09, stdev=27.13, samples=162 iops : min= 4, max= 35, avg=17.68, stdev= 6.79, samples=162 write: IOPS=18, BW=75.5KiB/s (77.4kB/s)(6260KiB/82861msec); 0 zone resets clat (usec): min=1066, max=913199, avg=28177.47, stdev=35223.21 lat (usec): min=1068, max=913201, avg=28179.15, stdev=35223.30 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1696], 10.00th=[ 2343], 20.00th=[ 4146], | 30.00th=[ 8160], 40.00th=[ 15270], 50.00th=[ 21627], 60.00th=[ 28181], | 70.00th=[ 35390], 80.00th=[ 45876], 90.00th=[ 60556], 95.00th=[ 76022], | 99.00th=[116917], 99.50th=[145753], 99.90th=[287310], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 23, max= 144, per=24.99%, avg=75.73, stdev=23.76, samples=162 iops : min= 5, max= 36, avg=18.33, stdev= 5.96, samples=162 lat (usec) : 50=0.46%, 100=3.35%, 250=0.68%, 500=0.13%, 750=0.07% lat (msec) : 2=4.07%, 4=5.83%, 10=8.46%, 20=22.33%, 50=42.42% lat (msec) : 100=11.00%, 250=1.07%, 500=0.10%, 1000=0.03% cpu : usr=0.11%, sys=9.79%, ctx=7273, 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=145933: Tue Jun 2 03:21:28 2026 read: IOPS=18, BW=74.4KiB/s (76.2kB/s)(6052KiB/81321msec) clat (usec): min=21, max=775804, avg=25709.17, stdev=26623.41 lat (usec): min=21, max=775805, avg=25710.88, stdev=26623.50 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 105], 20.00th=[ 12780], | 30.00th=[ 16319], 40.00th=[ 19006], 50.00th=[ 22152], 60.00th=[ 25560], | 70.00th=[ 31065], 80.00th=[ 36963], 90.00th=[ 46924], 95.00th=[ 58459], | 99.00th=[ 85459], 99.50th=[ 98042], 99.90th=[210764], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 136, per=25.56%, avg=73.88, stdev=24.84, samples=161 iops : min= 1, max= 34, avg=17.88, stdev= 6.23, samples=161 write: IOPS=19, BW=76.7KiB/s (78.5kB/s)(6236KiB/81321msec); 0 zone resets clat (usec): min=1072, max=259211, avg=27036.71, stdev=25412.53 lat (usec): min=1073, max=259213, avg=27039.59, stdev=25412.74 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1696], 10.00th=[ 2311], 20.00th=[ 4228], | 30.00th=[ 7963], 40.00th=[ 15533], 50.00th=[ 22152], 60.00th=[ 27919], | 70.00th=[ 34866], 80.00th=[ 45351], 90.00th=[ 59507], 95.00th=[ 72877], | 99.00th=[111674], 99.50th=[143655], 99.90th=[164627], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 7, max= 151, per=25.08%, avg=76.00, stdev=25.09, samples=161 iops : min= 1, max= 37, avg=18.42, stdev= 6.31, samples=161 lat (usec) : 50=0.72%, 100=4.10%, 250=0.94%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.03% lat (msec) : 2=4.00%, 4=5.73%, 10=8.24%, 20=21.00%, 50=42.38% lat (msec) : 100=11.56%, 250=0.98%, 500=0.03%, 1000=0.03% cpu : usr=0.11%, sys=9.95%, ctx=7142, 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=290KiB/s (297kB/s), 71.0KiB/s-74.4KiB/s (73.7kB/s-76.2kB/s), io=23.4MiB (24.6MB), run=81321-82861msec WRITE: bw=303KiB/s (311kB/s), 75.5KiB/s-76.9KiB/s (77.4kB/s-78.7kB/s), io=24.6MiB (25.7MB), run=81321-82861msec fio: pid=145930, err=5/file:backend.c:481, func=full resid, error=Input/output error fio: pid=145932, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=145926: Tue Jun 2 03:22:41 2026 read: IOPS=9, BW=38.5KiB/s (39.4kB/s)(5992KiB/155636msec) clat (msec): min=5, max=680, avg=22.02, stdev=27.75 lat (msec): min=5, max=680, avg=22.02, stdev=27.75 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 29], 90.00th=[ 47], 95.00th=[ 63], | 99.00th=[ 111], 99.50th=[ 144], 99.90th=[ 251], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 159, per=33.23%, avg=38.88, stdev=25.79, samples=302 iops : min= 1, max= 39, avg= 9.18, stdev= 6.47, samples=302 write: IOPS=10, BW=40.5KiB/s (41.4kB/s)(6296KiB/155636msec); 0 zone resets clat (msec): min=26, max=329, avg=77.75, stdev=38.56 lat (msec): min=26, max=329, avg=77.75, stdev=38.56 clat percentiles (msec): | 1.00th=[ 33], 5.00th=[ 37], 10.00th=[ 41], 20.00th=[ 47], | 30.00th=[ 53], 40.00th=[ 59], 50.00th=[ 66], 60.00th=[ 78], | 70.00th=[ 90], 80.00th=[ 106], 90.00th=[ 132], 95.00th=[ 150], | 99.00th=[ 205], 99.50th=[ 234], 99.90th=[ 284], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 88, per=32.65%, avg=40.16, stdev=18.81, samples=307 iops : min= 1, max= 22, avg= 9.50, stdev= 4.78, samples=307 lat (msec) : 10=14.36%, 20=18.98%, 50=25.07%, 100=28.91%, 250=12.50% lat (msec) : 500=0.16%, 750=0.03% cpu : usr=0.06%, sys=2.46%, ctx=5613, 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=145928: Tue Jun 2 03:22:41 2026 read: IOPS=9, BW=37.0KiB/s (38.9kB/s)(5940KiB/156450msec) clat (msec): min=5, max=761, avg=21.58, stdev=28.72 lat (msec): min=5, max=761, avg=21.58, stdev=28.72 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 29], 90.00th=[ 47], 95.00th=[ 65], | 99.00th=[ 106], 99.50th=[ 140], 99.90th=[ 207], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 151, per=33.67%, avg=39.40, stdev=26.26, samples=296 iops : min= 1, max= 37, avg= 9.32, stdev= 6.60, samples=296 write: IOPS=10, BW=40.6KiB/s (41.5kB/s)(6348KiB/156450msec); 0 zone resets clat (msec): min=26, max=338, avg=78.22, stdev=39.96 lat (msec): min=26, max=338, avg=78.22, stdev=39.96 clat percentiles (msec): | 1.00th=[ 34], 5.00th=[ 37], 10.00th=[ 41], 20.00th=[ 46], | 30.00th=[ 52], 40.00th=[ 59], 50.00th=[ 66], 60.00th=[ 77], | 70.00th=[ 89], 80.00th=[ 107], 90.00th=[ 133], 95.00th=[ 157], | 99.00th=[ 218], 99.50th=[ 232], 99.90th=[ 334], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 7, max= 87, per=32.66%, avg=40.17, stdev=18.92, samples=310 iops : min= 1, max= 21, avg= 9.51, stdev= 4.81, samples=310 lat (msec) : 10=15.20%, 20=18.78%, 50=24.45%, 100=28.48%, 250=12.86% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.06%, sys=2.47%, ctx=5574, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=145930: Tue Jun 2 03:22:41 2026 read: IOPS=7, BW=28.0KiB/s (29.7kB/s)(3016KiB/104004msec) clat (msec): min=5, max=248, avg=32.26, stdev=27.21 lat (msec): min=5, max=248, avg=32.27, stdev=27.21 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 48], 90.00th=[ 63], 95.00th=[ 79], | 99.00th=[ 157], 99.50th=[ 203], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 7, max= 80, per=24.70%, avg=28.90, stdev=17.69, samples=202 iops : min= 1, max= 20, avg= 6.66, stdev= 4.44, samples=202 write: IOPS=7, BW=29.4KiB/s (30.1kB/s)(3056KiB/104004msec); 0 zone resets clat (msec): min=30, max=898, avg=103.96, stdev=49.06 lat (msec): min=30, max=898, avg=103.97, stdev=49.07 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 52], 10.00th=[ 59], 20.00th=[ 69], | 30.00th=[ 79], 40.00th=[ 89], 50.00th=[ 96], 60.00th=[ 109], | 70.00th=[ 120], 80.00th=[ 133], 90.00th=[ 153], 95.00th=[ 178], | 99.00th=[ 234], 99.50th=[ 241], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 71, per=23.61%, avg=29.03, stdev=11.72, samples=204 iops : min= 1, max= 17, avg= 6.69, stdev= 2.97, samples=204 lat (msec) : 10=3.82%, 20=16.85%, 50=22.51%, 100=32.52%, 250=24.03% lat (msec) : 500=0.13%, 1000=0.07% cpu : usr=0.04%, sys=2.27%, ctx=2212, 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=755,764,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=145932: Tue Jun 2 03:22:41 2026 read: IOPS=7, BW=30.8KiB/s (31.5kB/s)(3480KiB/113068msec) clat (msec): min=5, max=212, avg=29.04, stdev=25.92 lat (msec): min=5, max=212, avg=29.04, stdev=25.92 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 33], 80.00th=[ 44], 90.00th=[ 64], 95.00th=[ 78], | 99.00th=[ 133], 99.50th=[ 163], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 7, max= 144, per=27.51%, avg=32.18, stdev=21.59, samples=210 iops : min= 1, max= 36, avg= 7.48, stdev= 5.47, samples=210 write: IOPS=7, BW=31.5KiB/s (32.2kB/s)(3560KiB/113068msec); 0 zone resets clat (msec): min=30, max=840, avg=98.39, stdev=47.10 lat (msec): min=30, max=840, avg=98.40, stdev=47.10 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 45], 10.00th=[ 53], 20.00th=[ 63], | 30.00th=[ 73], 40.00th=[ 83], 50.00th=[ 92], 60.00th=[ 102], | 70.00th=[ 113], 80.00th=[ 129], 90.00th=[ 150], 95.00th=[ 171], | 99.00th=[ 234], 99.50th=[ 266], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 72, per=25.17%, avg=30.96, stdev=13.17, samples=223 iops : min= 1, max= 18, avg= 7.17, stdev= 3.35, samples=223 lat (msec) : 10=8.29%, 20=17.04%, 50=20.67%, 100=32.03%, 250=21.58% lat (msec) : 500=0.28%, 1000=0.06% cpu : usr=0.05%, sys=2.20%, ctx=2820, majf=0, minf=20 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=871,890,0,0 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=118KiB/s (121kB/s), 28.0KiB/s-38.5KiB/s (29.7kB/s-39.4kB/s), io=17.0MiB (18.9MB), run=104004-156450msec WRITE: bw=123KiB/s (126kB/s), 29.4KiB/s-40.6KiB/s (30.1kB/s-41.5kB/s), io=18.8MiB (19.7MB), run=104004-156450msec 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=145978: Tue Jun 2 03:23:08 2026 read: IOPS=19, BW=318KiB/s (326kB/s)(5920KiB/18603msec) clat (usec): min=29, max=139461, avg=23100.57, stdev=19412.31 lat (usec): min=29, max=139461, avg=23101.83, stdev=19412.74 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 112], | 30.00th=[ 11863], 40.00th=[ 18220], 50.00th=[ 22414], 60.00th=[ 26608], | 70.00th=[ 30802], 80.00th=[ 38011], 90.00th=[ 50070], 95.00th=[ 55837], | 99.00th=[ 72877], 99.50th=[ 79168], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 158, max= 632, per=24.82%, avg=318.67, stdev=118.15, samples=36 iops : min= 9, max= 39, avg=19.33, stdev= 7.56, samples=36 write: IOPS=21, BW=342KiB/s (351kB/s)(6368KiB/18603msec); 0 zone resets clat (usec): min=1478, max=165721, avg=25194.40, stdev=24494.35 lat (usec): min=1480, max=165723, avg=25197.12, stdev=24494.45 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2573], 10.00th=[ 3687], 20.00th=[ 5014], | 30.00th=[ 6783], 40.00th=[ 10421], 50.00th=[ 16319], 60.00th=[ 24773], | 70.00th=[ 32113], 80.00th=[ 45351], 90.00th=[ 61080], 95.00th=[ 71828], | 99.00th=[ 94897], 99.50th=[147850], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 189, max= 608, per=25.56%, avg=345.28, stdev=104.33, samples=36 iops : min= 11, max= 38, avg=21.00, stdev= 6.67, samples=36 lat (usec) : 50=1.17%, 100=6.90%, 250=4.04%, 500=0.52%, 750=0.13% lat (msec) : 2=1.69%, 4=5.21%, 10=13.28%, 20=16.80%, 50=37.37% lat (msec) : 100=12.37%, 250=0.52% cpu : usr=0.10%, sys=11.53%, ctx=1656, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145979: Tue Jun 2 03:23:08 2026 read: IOPS=19, BW=308KiB/s (316kB/s)(5744KiB/18642msec) clat (usec): min=44, max=175601, avg=26519.77, stdev=22499.61 lat (usec): min=45, max=175602, avg=26520.88, stdev=22499.61 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 65], 10.00th=[ 86], 20.00th=[ 186], | 30.00th=[ 16581], 40.00th=[ 20841], 50.00th=[ 24773], 60.00th=[ 28181], | 70.00th=[ 33817], 80.00th=[ 40633], 90.00th=[ 53216], 95.00th=[ 64750], | 99.00th=[102237], 99.50th=[117965], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 63, max= 512, per=24.23%, avg=311.17, stdev=97.60, samples=36 iops : min= 3, max= 32, avg=18.86, stdev= 6.24, samples=36 write: IOPS=21, BW=351KiB/s (359kB/s)(6544KiB/18642msec); 0 zone resets clat (usec): min=1649, max=116415, avg=22212.26, stdev=20433.89 lat (usec): min=1650, max=116417, avg=22214.43, stdev=20434.12 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2540], 10.00th=[ 3425], 20.00th=[ 5604], | 30.00th=[ 6783], 40.00th=[ 8979], 50.00th=[ 15401], 60.00th=[ 21365], | 70.00th=[ 29230], 80.00th=[ 37487], 90.00th=[ 50594], 95.00th=[ 60556], | 99.00th=[ 90702], 99.50th=[103285], 99.90th=[116917], 99.95th=[116917], | 99.99th=[116917] bw ( KiB/s): min= 160, max= 640, per=26.12%, avg=352.83, stdev=98.67, samples=36 iops : min= 10, max= 40, avg=21.47, stdev= 6.23, samples=36 lat (usec) : 50=0.52%, 100=5.21%, 250=4.04%, 500=0.65%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.04%, 4=5.34%, 10=15.23%, 20=15.10%, 50=41.93% lat (msec) : 100=9.64%, 250=1.04% cpu : usr=0.07%, sys=11.86%, ctx=1687, 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=145980: Tue Jun 2 03:23:08 2026 read: IOPS=22, BW=356KiB/s (364kB/s)(6256KiB/17584msec) clat (usec): min=38, max=129351, avg=23434.58, stdev=18719.39 lat (usec): min=38, max=129352, avg=23435.76, stdev=18719.46 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 60], 10.00th=[ 73], 20.00th=[ 137], | 30.00th=[ 15926], 40.00th=[ 19268], 50.00th=[ 22414], 60.00th=[ 26608], | 70.00th=[ 30802], 80.00th=[ 36439], 90.00th=[ 44827], 95.00th=[ 52691], | 99.00th=[ 86508], 99.50th=[126354], 99.90th=[129500], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 159, max= 544, per=28.15%, avg=361.41, stdev=95.98, samples=34 iops : min= 9, max= 34, avg=21.97, stdev= 6.13, samples=34 write: IOPS=21, BW=343KiB/s (351kB/s)(6032KiB/17584msec); 0 zone resets clat (usec): min=1707, max=95856, avg=22268.96, stdev=19833.49 lat (usec): min=1708, max=95860, avg=22271.07, stdev=19833.46 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2671], 10.00th=[ 3654], 20.00th=[ 5276], | 30.00th=[ 7111], 40.00th=[10290], 50.00th=[16909], 60.00th=[22152], | 70.00th=[27919], 80.00th=[38011], 90.00th=[51119], 95.00th=[64226], | 99.00th=[85459], 99.50th=[91751], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 126, max= 512, per=25.25%, avg=341.09, stdev=93.00, samples=34 iops : min= 7, max= 32, avg=20.74, stdev= 5.96, samples=34 lat (usec) : 50=1.04%, 100=7.55%, 250=2.86%, 500=0.13%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=0.78%, 4=5.21%, 10=13.41%, 20=18.36%, 50=41.41% lat (msec) : 100=8.59%, 250=0.26% cpu : usr=0.12%, sys=12.18%, ctx=1670, 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=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=145981: Tue Jun 2 03:23:08 2026 read: IOPS=20, BW=334KiB/s (342kB/s)(6032KiB/18062msec) clat (usec): min=37, max=120798, avg=25245.99, stdev=21437.13 lat (usec): min=37, max=120799, avg=25247.46, stdev=21437.21 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 100], | 30.00th=[ 14615], 40.00th=[ 19792], 50.00th=[ 24773], 60.00th=[ 28967], | 70.00th=[ 34866], 80.00th=[ 41681], 90.00th=[ 50070], 95.00th=[ 60556], | 99.00th=[ 90702], 99.50th=[110625], 99.90th=[121111], 99.95th=[121111], | 99.99th=[121111] bw ( KiB/s): min= 91, max= 672, per=26.19%, avg=336.23, stdev=111.26, samples=35 iops : min= 5, max= 42, avg=20.40, stdev= 7.07, samples=35 write: IOPS=21, BW=346KiB/s (355kB/s)(6256KiB/18062msec); 0 zone resets clat (usec): min=1495, max=203904, avg=21766.33, stdev=23365.23 lat (usec): min=1497, max=203906, avg=21768.74, stdev=23365.32 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2147], 10.00th=[ 2999], 20.00th=[ 4359], | 30.00th=[ 5866], 40.00th=[ 8094], 50.00th=[ 13042], 60.00th=[ 20841], | 70.00th=[ 26870], 80.00th=[ 38011], 90.00th=[ 51643], 95.00th=[ 62129], | 99.00th=[104334], 99.50th=[156238], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 137, max= 608, per=25.92%, avg=350.23, stdev=107.57, samples=35 iops : min= 8, max= 38, avg=21.29, stdev= 6.85, samples=35 lat (usec) : 50=0.78%, 100=9.11%, 250=2.21%, 500=0.52%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=2.08%, 4=7.29%, 10=13.54%, 20=13.80%, 50=39.58% lat (msec) : 100=9.77%, 250=0.91% cpu : usr=0.10%, sys=11.90%, ctx=1693, 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=1285KiB/s (1316kB/s), 308KiB/s-356KiB/s (316kB/s-364kB/s), io=23.4MiB (24.5MB), run=17584-18642msec WRITE: bw=1352KiB/s (1384kB/s), 342KiB/s-351KiB/s (351kB/s-359kB/s), io=24.6MiB (25.8MB), run=17584-18642msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145973: Tue Jun 2 03:23:36 2026 read: IOPS=7, BW=126KiB/s (129kB/s)(5920KiB/46946msec) clat (msec): min=6, max=197, avg=29.10, stdev=23.15 lat (msec): min=6, max=197, avg=29.10, stdev=23.15 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 56], 95.00th=[ 79], | 99.00th=[ 116], 99.50th=[ 136], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 444, per=25.96%, avg=129.78, stdev=78.49, samples=90 iops : min= 1, max= 27, avg= 7.38, stdev= 4.96, samples=90 write: IOPS=8, BW=136KiB/s (139kB/s)(6368KiB/46946msec); 0 zone resets clat (msec): min=34, max=257, avg=90.79, stdev=36.36 lat (msec): min=34, max=257, avg=90.80, stdev=36.37 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 51], 10.00th=[ 55], 20.00th=[ 63], | 30.00th=[ 68], 40.00th=[ 75], 50.00th=[ 82], 60.00th=[ 90], | 70.00th=[ 101], 80.00th=[ 111], 90.00th=[ 144], 95.00th=[ 174], | 99.00th=[ 228], 99.50th=[ 236], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 256, per=25.66%, avg=134.97, stdev=49.71, samples=93 iops : min= 1, max= 16, avg= 7.70, stdev= 3.20, samples=93 lat (msec) : 10=2.99%, 20=16.80%, 50=24.74%, 100=38.41%, 250=16.93% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=2.58%, ctx=1509, 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=145974: Tue Jun 2 03:23:36 2026 read: IOPS=7, BW=120KiB/s (123kB/s)(5744KiB/47838msec) clat (msec): min=6, max=195, avg=29.21, stdev=23.01 lat (msec): min=6, max=195, avg=29.22, stdev=23.01 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 30], 80.00th=[ 39], 90.00th=[ 57], 95.00th=[ 78], | 99.00th=[ 121], 99.50th=[ 153], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 31, max= 480, per=25.07%, avg=125.33, stdev=78.26, samples=91 iops : min= 1, max= 30, avg= 7.10, stdev= 4.93, samples=91 write: IOPS=8, BW=137KiB/s (140kB/s)(6544KiB/47838msec); 0 zone resets clat (msec): min=38, max=238, avg=91.11, stdev=35.20 lat (msec): min=38, max=238, avg=91.12, stdev=35.20 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 49], 10.00th=[ 54], 20.00th=[ 62], | 30.00th=[ 70], 40.00th=[ 77], 50.00th=[ 83], 60.00th=[ 93], | 70.00th=[ 103], 80.00th=[ 117], 90.00th=[ 144], 95.00th=[ 161], | 99.00th=[ 190], 99.50th=[ 226], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 62, max= 224, per=25.89%, avg=136.16, stdev=48.59, samples=95 iops : min= 3, max= 14, avg= 7.78, stdev= 3.17, samples=95 lat (msec) : 10=3.65%, 20=14.58%, 50=26.30%, 100=37.37%, 250=18.10% cpu : usr=0.06%, sys=2.50%, ctx=1493, 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=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=145975: Tue Jun 2 03:23:36 2026 read: IOPS=8, BW=137KiB/s (140kB/s)(6256KiB/45787msec) clat (msec): min=6, max=170, avg=28.27, stdev=21.24 lat (msec): min=6, max=170, avg=28.28, stdev=21.24 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 55], 95.00th=[ 73], | 99.00th=[ 112], 99.50th=[ 124], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 31, max= 414, per=27.91%, avg=139.55, stdev=83.84, samples=89 iops : min= 1, max= 25, avg= 7.99, stdev= 5.30, samples=89 write: IOPS=8, BW=132KiB/s (135kB/s)(6032KiB/45787msec); 0 zone resets clat (msec): min=32, max=259, avg=91.92, stdev=38.50 lat (msec): min=32, max=259, avg=91.92, stdev=38.51 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 48], 10.00th=[ 52], 20.00th=[ 62], | 30.00th=[ 69], 40.00th=[ 75], 50.00th=[ 83], 60.00th=[ 90], | 70.00th=[ 104], 80.00th=[ 120], 90.00th=[ 148], 95.00th=[ 176], | 99.00th=[ 226], 99.50th=[ 253], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 62, max= 255, per=24.95%, avg=131.23, stdev=49.67, samples=91 iops : min= 3, max= 15, avg= 7.46, stdev= 3.17, samples=91 lat (msec) : 10=4.43%, 20=17.58%, 50=27.21%, 100=33.85%, 250=16.67% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=2.59%, ctx=1551, 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=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=145976: Tue Jun 2 03:23:36 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(6032KiB/46373msec) clat (msec): min=5, max=192, avg=27.50, stdev=22.73 lat (msec): min=5, max=192, avg=27.50, stdev=22.73 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 30], 80.00th=[ 35], 90.00th=[ 49], 95.00th=[ 67], | 99.00th=[ 122], 99.50th=[ 188], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 31, max= 414, per=26.05%, avg=130.23, stdev=78.03, samples=91 iops : min= 1, max= 25, avg= 7.40, stdev= 4.92, samples=91 write: IOPS=8, BW=135KiB/s (138kB/s)(6256KiB/46373msec); 0 zone resets clat (msec): min=34, max=253, avg=91.88, stdev=38.40 lat (msec): min=34, max=253, avg=91.88, stdev=38.40 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 48], 10.00th=[ 53], 20.00th=[ 61], | 30.00th=[ 69], 40.00th=[ 77], 50.00th=[ 83], 60.00th=[ 91], | 70.00th=[ 104], 80.00th=[ 122], 90.00th=[ 142], 95.00th=[ 171], | 99.00th=[ 232], 99.50th=[ 247], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 287, per=25.60%, avg=134.65, stdev=52.93, samples=92 iops : min= 1, max= 17, avg= 7.67, stdev= 3.38, samples=92 lat (msec) : 10=4.17%, 20=19.27%, 50=24.61%, 100=35.03%, 250=16.80% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.61%, ctx=1506, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=501KiB/s (513kB/s), 120KiB/s-137KiB/s (123kB/s-140kB/s), io=23.4MiB (24.5MB), run=45787-47838msec WRITE: bw=527KiB/s (539kB/s), 132KiB/s-137KiB/s (135kB/s-140kB/s), io=24.6MiB (25.8MB), run=45787-47838msec 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=145994: Tue Jun 2 03:23:49 2026 read: IOPS=1, BW=1855KiB/s (1899kB/s)(7168KiB/3865msec) clat (msec): min=100, max=307, avg=179.40, stdev=72.08 lat (msec): min=100, max=307, avg=179.42, stdev=72.09 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 103], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 192], 60.00th=[ 194], | 70.00th=[ 194], 80.00th=[ 213], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 2035, max= 4039, per=67.01%, avg=3352.67, stdev=1141.46, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1325KiB/s (1357kB/s)(5120KiB/3865msec); 0 zone resets clat (msec): min=130, max=788, avg=502.05, stdev=280.33 lat (msec): min=130, max=788, avg=502.14, stdev=280.35 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 2031, max= 4031, per=38.59%, avg=2703.33, stdev=1149.82, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=6.68%, ctx=92, 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=145995: Tue Jun 2 03:23:49 2026 read: IOPS=0, BW=500KiB/s (512kB/s)(2048KiB/4093msec) clat (msec): min=79, max=264, avg=172.31, stdev=130.62 lat (msec): min=79, max=264, avg=172.31, stdev=130.61 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 81], 40.00th=[ 81], 50.00th=[ 81], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 266], 90.00th=[ 266], 95.00th=[ 266], | 99.00th=[ 266], 99.50th=[ 266], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 1385, max= 2015, per=33.98%, avg=1700.00, stdev=445.48, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2502KiB/s (2562kB/s)(10.0MiB/4093msec); 0 zone resets clat (msec): min=137, max=941, avg=371.86, stdev=262.96 lat (msec): min=137, max=941, avg=371.96, stdev=262.97 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 159], | 30.00th=[ 169], 40.00th=[ 222], 50.00th=[ 255], 60.00th=[ 257], | 70.00th=[ 372], 80.00th=[ 600], 90.00th=[ 609], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1385, max= 6071, per=44.35%, avg=3106.80, stdev=1929.31, samples=5 iops : min= 1, max= 5, avg= 2.40, stdev= 1.67, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.05%, sys=6.45%, ctx=82, 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=145996: Tue Jun 2 03:23:49 2026 read: IOPS=1, BW=1808KiB/s (1851kB/s)(6144KiB/3399msec) clat (msec): min=179, max=416, avg=309.33, stdev=97.69 lat (msec): min=179, max=416, avg=309.34, stdev=97.69 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 347], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2019, max= 4063, per=50.83%, avg=2543.25, stdev=1013.25, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1808KiB/s (1851kB/s)(6144KiB/3399msec); 0 zone resets clat (msec): min=131, max=422, avg=252.35, stdev=116.75 lat (msec): min=131, max=422, avg=252.44, stdev=116.74 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 213], 50.00th=[ 213], 60.00th=[ 251], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 1976, max= 4071, per=36.10%, avg=2528.50, stdev=1028.76, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=41.67%, 500=58.33% cpu : usr=0.00%, sys=5.86%, ctx=53, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145997: Tue Jun 2 03:23:49 2026 read: IOPS=1, BW=1259KiB/s (1289kB/s)(5120KiB/4067msec) clat (msec): min=49, max=583, avg=308.85, stdev=241.61 lat (msec): min=49, max=583, avg=308.85, stdev=241.61 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 50], | 30.00th=[ 106], 40.00th=[ 106], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2015, max= 4047, per=54.03%, avg=2703.33, stdev=1163.77, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1762KiB/s (1805kB/s)(7168KiB/4067msec); 0 zone resets clat (msec): min=161, max=578, avg=349.83, stdev=191.47 lat (msec): min=161, max=579, avg=349.95, stdev=191.46 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 169], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 275], 60.00th=[ 535], | 70.00th=[ 535], 80.00th=[ 542], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1469, max= 2043, per=27.34%, avg=1915.40, stdev=249.91, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 50=8.33%, 250=33.33%, 500=16.67%, 750=41.67% cpu : usr=0.00%, sys=6.03%, ctx=97, 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=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=5004KiB/s (5124kB/s), 500KiB/s-1855KiB/s (512kB/s-1899kB/s), io=20.0MiB (20.0MB), run=3399-4093msec WRITE: bw=7005KiB/s (7173kB/s), 1325KiB/s-2502KiB/s (1357kB/s-2562kB/s), io=28.0MiB (29.4MB), run=3399-4093msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145998: Tue Jun 2 03:23:49 2026 read: IOPS=2, BW=2431KiB/s (2489kB/s)(7168KiB/2949msec) clat (msec): min=146, max=333, avg=198.06, stdev=66.82 lat (msec): min=146, max=333, avg=198.06, stdev=66.82 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 194], | 70.00th=[ 194], 80.00th=[ 234], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 2027, max= 5840, per=79.19%, avg=3900.67, stdev=1907.35, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1736KiB/s (1778kB/s)(5120KiB/2949msec); 0 zone resets clat (msec): min=185, max=442, avg=302.80, stdev=109.46 lat (msec): min=185, max=442, avg=302.87, stdev=109.46 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1899, max= 6144, per=58.31%, avg=4021.50, stdev=3001.67, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (msec) : 250=66.67%, 500=33.33% cpu : usr=0.00%, sys=21.27%, ctx=353, 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=145999: Tue Jun 2 03:23:49 2026 read: IOPS=0, BW=493KiB/s (504kB/s)(2048KiB/4157msec) clat (usec): min=832, max=438964, avg=219898.69, stdev=309806.07 lat (usec): min=833, max=438966, avg=219900.19, stdev=309806.78 clat percentiles (usec): | 1.00th=[ 832], 5.00th=[ 832], 10.00th=[ 832], 20.00th=[ 832], | 30.00th=[ 832], 40.00th=[ 832], 50.00th=[ 832], 60.00th=[438305], | 70.00th=[438305], 80.00th=[438305], 90.00th=[438305], 95.00th=[438305], | 99.00th=[438305], 99.50th=[438305], 99.90th=[438305], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 1899, max= 1965, per=39.22%, avg=1932.00, stdev=46.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2463KiB/s (2522kB/s)(10.0MiB/4157msec); 0 zone resets clat (msec): min=96, max=997, avg=351.60, stdev=269.94 lat (msec): min=96, max=997, avg=351.71, stdev=269.92 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 111], | 30.00th=[ 203], 40.00th=[ 209], 50.00th=[ 284], 60.00th=[ 313], | 70.00th=[ 334], 80.00th=[ 363], 90.00th=[ 609], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1899, max= 6131, per=43.33%, avg=2988.67, stdev=1728.86, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.60, samples=6 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.05%, sys=17.44%, ctx=237, 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=146000: Tue Jun 2 03:23:49 2026 read: IOPS=1, BW=1646KiB/s (1686kB/s)(6144KiB/3732msec) clat (msec): min=147, max=329, avg=224.40, stdev=74.12 lat (msec): min=147, max=329, avg=224.40, stdev=74.12 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 197], 50.00th=[ 197], 60.00th=[ 203], | 70.00th=[ 305], 80.00th=[ 305], 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= 2003, max= 4063, per=54.82%, avg=2700.33, stdev=1180.21, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1646KiB/s (1686kB/s)(6144KiB/3732msec); 0 zone resets clat (msec): min=150, max=671, avg=379.61, stdev=185.10 lat (msec): min=150, max=672, avg=379.74, stdev=185.15 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1855, max= 2716, per=31.34%, avg=2161.25, stdev=379.66, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=50.00%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=19.03%, ctx=304, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146001: Tue Jun 2 03:23:49 2026 read: IOPS=1, BW=1516KiB/s (1552kB/s)(5120KiB/3378msec) clat (usec): min=522, max=209459, avg=65753.92, stdev=86993.66 lat (usec): min=522, max=209461, avg=65755.14, stdev=86994.00 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 578], 40.00th=[ 578], 50.00th=[ 36439], 60.00th=[ 36439], | 70.00th=[ 81265], 80.00th=[ 81265], 90.00th=[208667], 95.00th=[208667], | 99.00th=[208667], 99.50th=[208667], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2122KiB/s (2173kB/s)(7168KiB/3378msec); 0 zone resets clat (msec): min=196, max=793, avg=415.61, stdev=201.39 lat (msec): min=196, max=793, avg=415.79, stdev=201.37 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 253], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 401], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 518], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1899, max= 4015, per=34.53%, avg=2381.20, stdev=915.67, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 750=16.67% lat (msec) : 50=8.33%, 100=8.33%, 250=16.67%, 500=33.33%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.03%, sys=18.39%, ctx=236, 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=4927KiB/s (5045kB/s), 493KiB/s-2431KiB/s (504kB/s-2489kB/s), io=20.0MiB (20.0MB), run=2949-4157msec WRITE: bw=6897KiB/s (7063kB/s), 1646KiB/s-2463KiB/s (1686kB/s-2522kB/s), io=28.0MiB (29.4MB), run=2949-4157msec 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=146008: Tue Jun 2 03:24:01 2026 read: IOPS=1, BW=5565KiB/s (5699kB/s)(12.0MiB/2208msec) clat (msec): min=607, max=722, avg=676.72, stdev=60.83 lat (msec): min=607, max=722, avg=676.72, stdev=60.84 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=21.48%, ctx=421, 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=146009: Tue Jun 2 03:24:01 2026 read: IOPS=0, BW=1578KiB/s (1616kB/s)(4096KiB/2596msec) clat (nsec): min=723713k, max=723713k, avg=723712827.00, stdev= 0.00 lat (nsec): min=723714k, max=723714k, avg=723713642.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] 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=3156KiB/s (3231kB/s)(8192KiB/2596msec); 0 zone resets clat (msec): min=772, max=941, avg=856.94, stdev=119.95 lat (msec): min=772, max=941, avg=857.26, stdev=119.76 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 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= 8192, max= 8192, per=68.53%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=9.56%, ctx=137, 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=146012: Tue Jun 2 03:24:01 2026 write: IOPS=1, BW=4483KiB/s (4591kB/s)(12.0MiB/2741msec); 0 zone resets clat (msec): min=318, max=1702, avg=843.29, stdev=750.14 lat (msec): min=318, max=1702, avg=843.58, stdev=750.05 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7968, max= 8159, per=67.45%, avg=8063.50, stdev=135.06, 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=0.00%, sys=7.04%, 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=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=146013: Tue Jun 2 03:24:01 2026 write: IOPS=1, BW=7301KiB/s (7476kB/s)(12.0MiB/1683msec); 0 zone resets clat (msec): min=284, max=841, avg=517.22, stdev=289.26 lat (msec): min=284, max=841, avg=517.57, stdev=289.26 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7074, max= 8159, per=63.72%, avg=7616.50, stdev=767.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=8.26%, ctx=48, 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=6311KiB/s (6463kB/s), 1578KiB/s-5565KiB/s (1616kB/s-5699kB/s), io=16.0MiB (16.8MB), run=2208-2596msec WRITE: bw=11.7MiB/s (12.2MB/s), 3156KiB/s-7301KiB/s (3231kB/s-7476kB/s), io=32.0MiB (33.6MB), run=1683-2741msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146010: Tue Jun 2 03:24:01 2026 read: IOPS=1, BW=5105KiB/s (5228kB/s)(12.0MiB/2407msec) clat (msec): min=355, max=972, avg=747.57, stdev=340.68 lat (msec): min=355, max=972, avg=747.57, stdev=340.68 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 969], 80.00th=[ 969], 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= 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) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=5.32%, ctx=59, 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=146011: Tue Jun 2 03:24:01 2026 read: IOPS=0, BW=1397KiB/s (1431kB/s)(4096KiB/2932msec) clat (nsec): min=1237.7M, max=1237.7M, avg=1237669343.00, stdev= 0.00 lat (nsec): min=1237.7M, max=1237.7M, avg=1237671717.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1234], 5.00th=[ 1234], 10.00th=[ 1234], 20.00th=[ 1234], | 30.00th=[ 1234], 40.00th=[ 1234], 50.00th=[ 1234], 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2794KiB/s (2861kB/s)(8192KiB/2932msec); 0 zone resets clat (msec): min=693, max=820, avg=757.20, stdev=90.12 lat (msec): min=693, max=821, avg=757.77, stdev=90.40 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 8110, max= 8110, per=73.39%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.21%, ctx=61, 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=146014: Tue Jun 2 03:24:01 2026 write: IOPS=1, BW=4144KiB/s (4244kB/s)(12.0MiB/2965msec); 0 zone resets clat (msec): min=205, max=1860, avg=943.12, stdev=841.84 lat (msec): min=206, max=1860, avg=943.70, stdev=841.70 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8159, max= 8159, per=73.83%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.59%, ctx=52, 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=146015: Tue Jun 2 03:24:01 2026 write: IOPS=1, BW=5644KiB/s (5780kB/s)(12.0MiB/2177msec); 0 zone resets clat (msec): min=546, max=879, avg=662.47, stdev=188.41 lat (msec): min=547, max=880, avg=662.96, stdev=188.28 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 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= 8000, max= 8159, per=73.11%, avg=8079.50, stdev=112.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=6.99%, ctx=62, 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=5588KiB/s (5722kB/s), 1397KiB/s-5105KiB/s (1431kB/s-5228kB/s), io=16.0MiB (16.8MB), run=2407-2932msec WRITE: bw=10.8MiB/s (11.3MB/s), 2794KiB/s-5644KiB/s (2861kB/s-5780kB/s), io=32.0MiB (33.6MB), run=2177-2965msec