== sanity test 398b: DIO and buffer IO race ============== 08:43:43 (1786193023) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.09736 s, 16.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145398: Sat Aug 8 08:44:52 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(5992KiB/57860msec) clat (usec): min=36, max=118407, avg=19699.28, stdev=11745.75 lat (usec): min=38, max=118408, avg=19700.73, stdev=11745.75 clat percentiles (usec): | 1.00th=[ 79], 5.00th=[ 208], 10.00th=[ 8979], 20.00th=[ 11469], | 30.00th=[ 13304], 40.00th=[ 15533], 50.00th=[ 17695], 60.00th=[ 20317], | 70.00th=[ 23200], 80.00th=[ 27395], 90.00th=[ 33424], 95.00th=[ 39060], | 99.00th=[ 60556], 99.50th=[ 69731], 99.90th=[106431], 99.95th=[117965], | 99.99th=[117965] bw ( KiB/s): min= 20, max= 175, per=25.46%, avg=103.62, stdev=27.23, samples=115 iops : min= 5, max= 43, avg=25.49, stdev= 6.82, samples=115 write: IOPS=27, BW=109KiB/s (111kB/s)(6296KiB/57860msec); 0 zone resets clat (usec): min=761, max=694816, avg=17855.55, stdev=23778.57 lat (usec): min=761, max=694817, avg=17857.39, stdev=23778.94 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 2057], 10.00th=[ 2737], 20.00th=[ 4146], | 30.00th=[ 6063], 40.00th=[ 10159], 50.00th=[ 13829], 60.00th=[ 17433], | 70.00th=[ 21890], 80.00th=[ 27395], 90.00th=[ 37487], 95.00th=[ 45351], | 99.00th=[ 76022], 99.50th=[ 94897], 99.90th=[198181], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 39, max= 207, per=25.75%, avg=109.68, stdev=31.90, samples=114 iops : min= 9, max= 51, avg=27.00, stdev= 8.01, samples=114 lat (usec) : 50=0.20%, 100=0.85%, 250=1.56%, 500=0.03%, 1000=0.23% lat (msec) : 2=2.25%, 4=7.29%, 10=14.58%, 20=35.38%, 50=35.09% lat (msec) : 100=2.28%, 250=0.23%, 750=0.03% cpu : usr=0.13%, sys=21.48%, ctx=8607, 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=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=145400: Sat Aug 8 08:44:52 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(5940KiB/58325msec) clat (usec): min=40, max=228309, avg=20177.25, stdev=13665.92 lat (usec): min=40, max=228311, avg=20180.46, stdev=13664.92 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 7046], 10.00th=[ 9110], 20.00th=[ 11076], | 30.00th=[ 13173], 40.00th=[ 15270], 50.00th=[ 17957], 60.00th=[ 20579], | 70.00th=[ 23462], 80.00th=[ 27395], 90.00th=[ 33817], 95.00th=[ 40633], | 99.00th=[ 58983], 99.50th=[ 71828], 99.90th=[196084], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 6, max= 183, per=24.97%, avg=101.62, stdev=30.00, samples=116 iops : min= 1, max= 45, avg=24.98, stdev= 7.51, samples=116 write: IOPS=27, BW=109KiB/s (111kB/s)(6348KiB/58325msec); 0 zone resets clat (usec): min=777, max=633591, avg=17715.77, stdev=21864.80 lat (usec): min=778, max=633591, avg=17717.49, stdev=21864.87 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 2057], 10.00th=[ 2704], 20.00th=[ 4146], | 30.00th=[ 6325], 40.00th=[ 10159], 50.00th=[ 13960], 60.00th=[ 17695], | 70.00th=[ 22152], 80.00th=[ 27657], 90.00th=[ 36439], 95.00th=[ 45876], | 99.00th=[ 76022], 99.50th=[ 86508], 99.90th=[143655], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 13, max= 215, per=25.47%, avg=108.51, stdev=34.41, samples=116 iops : min= 3, max= 53, avg=26.71, stdev= 8.66, samples=116 lat (usec) : 50=0.13%, 100=0.75%, 250=0.81%, 500=0.10%, 1000=0.16% lat (msec) : 2=2.25%, 4=7.45%, 10=15.89%, 20=34.47%, 50=35.06% lat (msec) : 100=2.60%, 250=0.29%, 750=0.03% cpu : usr=0.15%, sys=21.70%, ctx=8781, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145401: Sat Aug 8 08:44:52 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(6028KiB/57938msec) clat (usec): min=36, max=709839, avg=19803.52, stdev=21423.96 lat (usec): min=37, max=709841, avg=19807.79, stdev=21423.43 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 494], 10.00th=[ 8717], 20.00th=[ 10945], | 30.00th=[ 13173], 40.00th=[ 15270], 50.00th=[ 16909], 60.00th=[ 19792], | 70.00th=[ 22676], 80.00th=[ 26608], 90.00th=[ 33162], 95.00th=[ 39060], | 99.00th=[ 62653], 99.50th=[ 67634], 99.90th=[189793], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 39, max= 199, per=25.78%, avg=104.91, stdev=31.62, samples=114 iops : min= 9, max= 49, avg=25.81, stdev= 7.98, samples=114 write: IOPS=27, BW=108KiB/s (111kB/s)(6260KiB/57938msec); 0 zone resets clat (usec): min=819, max=227294, avg=17791.01, stdev=16236.59 lat (usec): min=820, max=227297, avg=17792.78, stdev=16236.62 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1909], 10.00th=[ 2737], 20.00th=[ 4228], | 30.00th=[ 6456], 40.00th=[ 10552], 50.00th=[ 14222], 60.00th=[ 18220], | 70.00th=[ 22676], 80.00th=[ 28967], 90.00th=[ 38011], 95.00th=[ 44827], | 99.00th=[ 65799], 99.50th=[ 79168], 99.90th=[145753], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 20, max= 175, per=25.33%, avg=107.90, stdev=31.90, samples=115 iops : min= 5, max= 43, avg=26.57, stdev= 7.93, samples=115 lat (usec) : 50=0.07%, 100=1.24%, 250=0.91%, 500=0.26%, 1000=0.23% lat (msec) : 2=2.54%, 4=6.77%, 10=15.07%, 20=35.71%, 50=34.64% lat (msec) : 100=2.34%, 250=0.20%, 750=0.03% cpu : usr=0.15%, sys=21.34%, ctx=8444, 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=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=145402: Sat Aug 8 08:44:52 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(6052KiB/58903msec) clat (usec): min=39, max=717666, avg=19886.42, stdev=22171.88 lat (usec): min=41, max=717667, avg=19887.97, stdev=22171.84 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 153], 10.00th=[ 8160], 20.00th=[ 10683], | 30.00th=[ 12780], 40.00th=[ 15008], 50.00th=[ 17433], 60.00th=[ 20579], | 70.00th=[ 23462], 80.00th=[ 27132], 90.00th=[ 33162], 95.00th=[ 39060], | 99.00th=[ 54789], 99.50th=[ 91751], 99.90th=[181404], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 6, max= 200, per=25.17%, avg=102.45, stdev=30.37, samples=117 iops : min= 1, max= 50, avg=25.20, stdev= 7.63, samples=117 write: IOPS=26, BW=106KiB/s (108kB/s)(6236KiB/58903msec); 0 zone resets clat (usec): min=862, max=204414, avg=18323.61, stdev=15614.21 lat (usec): min=863, max=204416, avg=18325.43, stdev=15614.38 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 2212], 10.00th=[ 2933], 20.00th=[ 4555], | 30.00th=[ 7635], 40.00th=[ 11863], 50.00th=[ 15926], 60.00th=[ 19530], | 70.00th=[ 23462], 80.00th=[ 28967], 90.00th=[ 36963], 95.00th=[ 43779], | 99.00th=[ 62129], 99.50th=[ 77071], 99.90th=[139461], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 27, max= 191, per=24.72%, avg=105.31, stdev=30.81, samples=117 iops : min= 6, max= 47, avg=25.91, stdev= 7.71, samples=117 lat (usec) : 50=0.13%, 100=1.17%, 250=1.76%, 500=0.10%, 1000=0.20% lat (msec) : 2=1.86%, 4=6.87%, 10=14.23%, 20=33.46%, 50=38.09% lat (msec) : 100=1.82%, 250=0.29%, 750=0.03% cpu : usr=0.15%, sys=21.38%, ctx=8611, 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=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=408KiB/s (417kB/s), 102KiB/s-104KiB/s (104kB/s-107kB/s), io=23.4MiB (24.6MB), run=57860-58903msec WRITE: bw=427KiB/s (437kB/s), 106KiB/s-109KiB/s (108kB/s-111kB/s), io=24.6MiB (25.7MB), run=57860-58903msec fio: pid=145406, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=145403: Sat Aug 8 08:45:27 2026 read: IOPS=15, BW=63.0KiB/s (65.5kB/s)(5992KiB/93656msec) clat (msec): min=3, max=671, avg=17.06, stdev=22.74 lat (msec): min=3, max=671, avg=17.06, stdev=22.74 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 35], 95.00th=[ 49], | 99.00th=[ 80], 99.50th=[ 93], 99.90th=[ 129], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 176, per=27.99%, avg=64.38, stdev=37.83, samples=184 iops : min= 1, max= 44, avg=15.73, stdev= 9.53, samples=184 write: IOPS=16, BW=67.2KiB/s (68.8kB/s)(6296KiB/93656msec); 0 zone resets clat (msec): min=13, max=209, avg=43.14, stdev=23.12 lat (msec): min=13, max=209, avg=43.14, stdev=23.12 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 51], 80.00th=[ 59], 90.00th=[ 72], 95.00th=[ 84], | 99.00th=[ 123], 99.50th=[ 133], 99.90th=[ 205], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 15, max= 144, per=27.78%, avg=67.23, stdev=32.14, samples=185 iops : min= 3, max= 36, avg=16.44, stdev= 8.15, samples=185 lat (msec) : 4=0.55%, 10=20.25%, 20=19.60%, 50=41.76%, 100=16.31% lat (msec) : 250=1.50%, 750=0.03% cpu : usr=0.10%, sys=7.07%, ctx=6322, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145404: Sat Aug 8 08:45:27 2026 read: IOPS=15, BW=63.2KiB/s (64.7kB/s)(5940KiB/94040msec) clat (msec): min=3, max=745, avg=17.22, stdev=24.11 lat (msec): min=3, max=745, avg=17.22, stdev=24.11 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 35], 95.00th=[ 48], | 99.00th=[ 78], 99.50th=[ 95], 99.90th=[ 136], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 184, per=27.65%, avg=63.59, stdev=37.96, samples=185 iops : min= 1, max= 46, avg=15.54, stdev= 9.56, samples=185 write: IOPS=16, BW=67.5KiB/s (69.1kB/s)(6348KiB/94040msec); 0 zone resets clat (msec): min=14, max=254, avg=43.02, stdev=23.93 lat (msec): min=14, max=254, avg=43.02, stdev=23.93 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 61], 90.00th=[ 74], 95.00th=[ 87], | 99.00th=[ 126], 99.50th=[ 153], 99.90th=[ 220], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 7, max= 144, per=27.90%, avg=67.52, stdev=32.49, samples=186 iops : min= 1, max= 36, avg=16.52, stdev= 8.25, samples=186 lat (msec) : 4=0.65%, 10=18.85%, 20=20.35%, 50=42.90%, 100=15.79% lat (msec) : 250=1.40%, 500=0.03%, 750=0.03% cpu : usr=0.10%, sys=6.95%, ctx=6304, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145405: Sat Aug 8 08:45:27 2026 read: IOPS=16, BW=64.1KiB/s (65.7kB/s)(6028KiB/93999msec) clat (msec): min=3, max=167, avg=16.88, stdev=15.15 lat (msec): min=3, max=167, avg=16.88, stdev=15.15 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 35], 95.00th=[ 47], | 99.00th=[ 73], 99.50th=[ 87], 99.90th=[ 117], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 7, max= 176, per=27.93%, avg=64.24, stdev=36.97, samples=186 iops : min= 1, max= 44, avg=15.70, stdev= 9.35, samples=186 write: IOPS=16, BW=66.6KiB/s (68.2kB/s)(6260KiB/93999msec); 0 zone resets clat (msec): min=14, max=698, avg=43.64, stdev=29.76 lat (msec): min=14, max=698, avg=43.64, stdev=29.76 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 50], 80.00th=[ 59], 90.00th=[ 73], 95.00th=[ 87], | 99.00th=[ 125], 99.50th=[ 184], 99.90th=[ 275], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 152, per=27.53%, avg=66.61, stdev=32.79, samples=186 iops : min= 1, max= 38, avg=16.29, stdev= 8.30, samples=186 lat (msec) : 4=0.49%, 10=19.43%, 20=20.21%, 50=42.74%, 100=15.69% lat (msec) : 250=1.37%, 500=0.03%, 750=0.03% cpu : usr=0.10%, sys=6.97%, ctx=6160, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=145406: Sat Aug 8 08:45:27 2026 read: IOPS=12, BW=51.7KiB/s (52.0kB/s)(3732KiB/72140msec) clat (msec): min=3, max=177, avg=21.25, stdev=17.04 lat (msec): min=3, max=177, avg=21.25, stdev=17.04 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 25], 80.00th=[ 32], 90.00th=[ 42], 95.00th=[ 55], | 99.00th=[ 79], 99.50th=[ 105], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 8, max= 152, per=22.65%, avg=52.10, stdev=27.46, samples=141 iops : min= 2, max= 38, avg=12.62, stdev= 6.90, samples=141 write: IOPS=13, BW=53.5KiB/s (54.7kB/s)(3856KiB/72140msec); 0 zone resets clat (msec): min=17, max=727, avg=54.04, stdev=33.04 lat (msec): min=17, max=727, avg=54.05, stdev=33.04 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 48], 60.00th=[ 55], | 70.00th=[ 61], 80.00th=[ 71], 90.00th=[ 86], 95.00th=[ 96], | 99.00th=[ 136], 99.50th=[ 176], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 15, max= 135, per=22.03%, avg=53.31, stdev=21.90, samples=142 iops : min= 3, max= 33, avg=12.92, stdev= 5.54, samples=142 lat (msec) : 4=0.16%, 10=13.07%, 20=16.54%, 50=44.15%, 100=23.29% lat (msec) : 250=2.63%, 500=0.05%, 750=0.05% cpu : usr=0.10%, sys=6.77%, ctx=3560, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=934,964,0,0 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=231KiB/s (236kB/s), 51.7KiB/s-64.1KiB/s (52.0kB/s-65.7kB/s), io=21.2MiB (22.2MB), run=72140-94040msec WRITE: bw=242KiB/s (248kB/s), 53.5KiB/s-67.5KiB/s (54.7kB/s-69.1kB/s), io=22.2MiB (23.3MB), run=72140-94040msec 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=145438: Sat Aug 8 08:45:47 2026 read: IOPS=26, BW=420KiB/s (430kB/s)(5920KiB/14098msec) clat (usec): min=46, max=65477, avg=17938.73, stdev=11590.00 lat (usec): min=47, max=65478, avg=17939.97, stdev=11590.00 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 93], 10.00th=[ 139], 20.00th=[ 9634], | 30.00th=[12387], 40.00th=[14353], 50.00th=[16581], 60.00th=[19530], | 70.00th=[22938], 80.00th=[26608], 90.00th=[31065], 95.00th=[39060], | 99.00th=[55313], 99.50th=[57934], 99.90th=[65274], 99.95th=[65274], | 99.99th=[65274] bw ( KiB/s): min= 191, max= 736, per=24.16%, avg=409.26, stdev=122.57, samples=27 iops : min= 11, max= 46, avg=25.11, stdev= 7.87, samples=27 write: IOPS=28, BW=452KiB/s (463kB/s)(6368KiB/14098msec); 0 zone resets clat (usec): min=1244, max=93201, avg=18648.03, stdev=15569.84 lat (usec): min=1246, max=93203, avg=18653.30, stdev=15570.76 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2769], 10.00th=[ 3654], 20.00th=[ 5342], | 30.00th=[ 7635], 40.00th=[10421], 50.00th=[13304], 60.00th=[17171], | 70.00th=[23725], 80.00th=[31327], 90.00th=[41157], 95.00th=[49546], | 99.00th=[68682], 99.50th=[80217], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 253, max= 672, per=24.84%, avg=442.59, stdev=112.83, samples=27 iops : min= 15, max= 42, avg=27.22, stdev= 7.23, samples=27 lat (usec) : 50=0.13%, 100=2.73%, 250=3.65%, 750=0.13% lat (msec) : 2=0.78%, 4=4.82%, 10=17.84%, 20=32.55%, 50=34.51% lat (msec) : 100=2.86% cpu : usr=0.12%, sys=23.54%, ctx=2387, 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=145439: Sat Aug 8 08:45:47 2026 read: IOPS=25, BW=409KiB/s (419kB/s)(5744KiB/14031msec) clat (usec): min=32, max=93205, avg=20173.73, stdev=12945.16 lat (usec): min=32, max=93206, avg=20175.06, stdev=12945.14 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 109], 10.00th=[ 7504], 20.00th=[11731], | 30.00th=[14222], 40.00th=[16319], 50.00th=[18220], 60.00th=[20841], | 70.00th=[23725], 80.00th=[27657], 90.00th=[34341], 95.00th=[43254], | 99.00th=[73925], 99.50th=[77071], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 256, max= 704, per=24.25%, avg=410.85, stdev=111.95, samples=27 iops : min= 16, max= 44, avg=25.22, stdev= 6.96, samples=27 write: IOPS=29, BW=466KiB/s (478kB/s)(6544KiB/14031msec); 0 zone resets clat (usec): min=1331, max=69701, avg=16400.74, stdev=13380.26 lat (usec): min=1333, max=69703, avg=16402.68, stdev=13380.32 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2507], 10.00th=[ 3785], 20.00th=[ 4817], | 30.00th=[ 6456], 40.00th=[ 9110], 50.00th=[12649], 60.00th=[16188], | 70.00th=[20841], 80.00th=[26870], 90.00th=[34866], 95.00th=[42206], | 99.00th=[61080], 99.50th=[63701], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 288, max= 730, per=25.88%, avg=461.22, stdev=116.69, samples=27 iops : min= 18, max= 45, avg=28.37, stdev= 7.24, samples=27 lat (usec) : 50=0.26%, 100=1.43%, 250=1.95%, 500=0.39% lat (msec) : 2=1.69%, 4=4.69%, 10=18.88%, 20=33.72%, 50=34.11% lat (msec) : 100=2.86% cpu : usr=0.12%, sys=23.93%, ctx=2412, 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=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=145440: Sat Aug 8 08:45:47 2026 read: IOPS=27, BW=442KiB/s (453kB/s)(6256KiB/14139msec) clat (usec): min=38, max=81324, avg=19303.44, stdev=13011.97 lat (usec): min=39, max=81325, avg=19304.57, stdev=13012.03 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 118], 10.00th=[ 182], 20.00th=[10290], | 30.00th=[13042], 40.00th=[15270], 50.00th=[17171], 60.00th=[20317], | 70.00th=[23462], 80.00th=[27395], 90.00th=[34866], 95.00th=[44827], | 99.00th=[63701], 99.50th=[72877], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 287, max= 733, per=26.31%, avg=445.67, stdev=132.26, samples=27 iops : min= 17, max= 45, avg=27.41, stdev= 8.17, samples=27 write: IOPS=26, BW=427KiB/s (437kB/s)(6032KiB/14139msec); 0 zone resets clat (usec): min=946, max=69364, avg=17305.19, stdev=13918.56 lat (usec): min=947, max=69368, avg=17307.24, stdev=13918.67 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 2343], 10.00th=[ 3490], 20.00th=[ 4883], | 30.00th=[ 7308], 40.00th=[ 9896], 50.00th=[13435], 60.00th=[16909], | 70.00th=[22676], 80.00th=[28443], 90.00th=[38011], 95.00th=[45351], | 99.00th=[57934], 99.50th=[63701], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 220, max= 608, per=23.60%, avg=420.63, stdev=96.53, samples=27 iops : min= 13, max= 38, avg=25.81, stdev= 6.13, samples=27 lat (usec) : 50=0.26%, 100=1.56%, 250=3.78%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.43%, 4=4.69%, 10=16.93%, 20=33.59%, 50=34.24% lat (msec) : 100=2.99% cpu : usr=0.16%, sys=23.67%, ctx=2415, 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=145441: Sat Aug 8 08:45:47 2026 read: IOPS=26, BW=429KiB/s (440kB/s)(6032KiB/14053msec) clat (usec): min=41, max=76067, avg=19058.03, stdev=12399.67 lat (usec): min=41, max=76068, avg=19059.06, stdev=12399.74 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 94], 10.00th=[ 124], 20.00th=[10552], | 30.00th=[13698], 40.00th=[15664], 50.00th=[17957], 60.00th=[20579], | 70.00th=[23725], 80.00th=[28443], 90.00th=[35914], 95.00th=[41157], | 99.00th=[57410], 99.50th=[74974], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 254, max= 576, per=24.88%, avg=421.41, stdev=104.00, samples=27 iops : min= 15, max= 36, avg=25.89, stdev= 6.55, samples=27 write: IOPS=27, BW=445KiB/s (456kB/s)(6256KiB/14053msec); 0 zone resets clat (usec): min=1193, max=77510, avg=17275.97, stdev=12889.35 lat (usec): min=1195, max=77512, avg=17278.72, stdev=12888.59 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 3326], 10.00th=[ 4228], 20.00th=[ 5669], | 30.00th=[ 7701], 40.00th=[11338], 50.00th=[14222], 60.00th=[17433], | 70.00th=[21365], 80.00th=[27657], 90.00th=[35914], 95.00th=[42206], | 99.00th=[55837], 99.50th=[63177], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 256, max= 672, per=24.69%, avg=439.93, stdev=105.53, samples=27 iops : min= 16, max= 42, avg=27.04, stdev= 6.50, samples=27 lat (usec) : 50=0.39%, 100=2.47%, 250=3.52%, 500=0.26%, 750=0.13% lat (msec) : 2=0.91%, 4=3.39%, 10=16.54%, 20=36.33%, 50=34.11% lat (msec) : 100=1.95% cpu : usr=0.11%, sys=24.06%, ctx=2372, 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=1694KiB/s (1735kB/s), 409KiB/s-442KiB/s (419kB/s-453kB/s), io=23.4MiB (24.5MB), run=14031-14139msec WRITE: bw=1782KiB/s (1825kB/s), 427KiB/s-466KiB/s (437kB/s-478kB/s), io=24.6MiB (25.8MB), run=14031-14139msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145433: Sat Aug 8 08:45:56 2026 read: IOPS=15, BW=248KiB/s (254kB/s)(5920KiB/23886msec) clat (msec): min=3, max=140, avg=17.66, stdev=16.92 lat (msec): min=3, max=140, avg=17.66, stdev=16.92 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 40], 95.00th=[ 55], | 99.00th=[ 81], 99.50th=[ 97], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 64, max= 608, per=24.44%, avg=244.91, stdev=117.26, samples=47 iops : min= 4, max= 38, avg=14.89, stdev= 7.31, samples=47 write: IOPS=16, BW=267KiB/s (273kB/s)(6368KiB/23886msec); 0 zone resets clat (msec): min=13, max=132, avg=43.42, stdev=20.21 lat (msec): min=13, max=132, avg=43.42, stdev=20.21 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 34], 50.00th=[ 38], 60.00th=[ 44], | 70.00th=[ 51], 80.00th=[ 58], 90.00th=[ 69], 95.00th=[ 84], | 99.00th=[ 122], 99.50th=[ 129], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 31, max= 540, per=25.12%, avg=265.06, stdev=118.75, samples=47 iops : min= 1, max= 33, avg=16.15, stdev= 7.48, samples=47 lat (msec) : 4=0.13%, 10=21.74%, 20=16.02%, 50=42.97%, 100=17.84% lat (msec) : 250=1.30% cpu : usr=0.10%, sys=7.35%, ctx=1613, 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=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=145434: Sat Aug 8 08:45:56 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(5744KiB/23736msec) clat (msec): min=4, max=117, avg=15.70, stdev=14.22 lat (msec): min=4, max=117, avg=15.71, stdev=14.22 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 32], 95.00th=[ 46], | 99.00th=[ 84], 99.50th=[ 89], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 31, max= 636, per=24.11%, avg=241.62, stdev=143.94, samples=47 iops : min= 1, max= 39, avg=14.70, stdev= 9.02, samples=47 write: IOPS=17, BW=276KiB/s (282kB/s)(6544KiB/23736msec); 0 zone resets clat (msec): min=14, max=136, avg=44.16, stdev=22.17 lat (msec): min=14, max=136, avg=44.16, stdev=22.17 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 50], 80.00th=[ 57], 90.00th=[ 78], 95.00th=[ 95], | 99.00th=[ 116], 99.50th=[ 122], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 126, max= 544, per=26.06%, avg=274.89, stdev=110.25, samples=47 iops : min= 7, max= 34, avg=16.77, stdev= 6.94, samples=47 lat (msec) : 10=22.27%, 20=15.49%, 50=45.57%, 100=14.45%, 250=2.21% cpu : usr=0.11%, sys=7.35%, ctx=1618, 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=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=145435: Sat Aug 8 08:45:56 2026 read: IOPS=16, BW=268KiB/s (274kB/s)(6256KiB/23359msec) clat (msec): min=3, max=141, avg=17.83, stdev=18.28 lat (msec): min=3, max=141, avg=17.83, stdev=18.28 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 25], 90.00th=[ 41], 95.00th=[ 59], | 99.00th=[ 106], 99.50th=[ 118], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 63, max= 734, per=26.90%, avg=269.52, stdev=152.63, samples=46 iops : min= 3, max= 45, avg=16.46, stdev= 9.57, samples=46 write: IOPS=16, BW=258KiB/s (264kB/s)(6032KiB/23359msec); 0 zone resets clat (msec): min=16, max=147, avg=43.30, stdev=20.87 lat (msec): min=16, max=147, avg=43.31, stdev=20.87 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 34], 50.00th=[ 38], 60.00th=[ 42], | 70.00th=[ 48], 80.00th=[ 56], 90.00th=[ 71], 95.00th=[ 88], | 99.00th=[ 122], 99.50th=[ 126], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 96, max= 540, per=24.34%, avg=256.78, stdev=114.11, samples=46 iops : min= 6, max= 33, avg=15.65, stdev= 7.17, samples=46 lat (msec) : 4=0.13%, 10=23.05%, 20=16.02%, 50=44.92%, 100=13.93% lat (msec) : 250=1.95% cpu : usr=0.10%, sys=7.81%, ctx=1623, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145436: Sat Aug 8 08:45:56 2026 read: IOPS=16, BW=256KiB/s (262kB/s)(6032KiB/23558msec) clat (msec): min=4, max=104, avg=17.31, stdev=17.13 lat (msec): min=4, max=104, avg=17.31, stdev=17.13 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 37], 95.00th=[ 58], | 99.00th=[ 86], 99.50th=[ 101], 99.90th=[ 105], 99.95th=[ 105], | 99.99th=[ 105] bw ( KiB/s): min= 63, max= 576, per=25.95%, avg=259.98, stdev=134.98, samples=45 iops : min= 3, max= 36, avg=15.87, stdev= 8.45, samples=45 write: IOPS=16, BW=266KiB/s (272kB/s)(6256KiB/23558msec); 0 zone resets clat (msec): min=16, max=148, avg=43.41, stdev=21.73 lat (msec): min=16, max=148, avg=43.43, stdev=21.74 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 34], 50.00th=[ 38], 60.00th=[ 43], | 70.00th=[ 47], 80.00th=[ 57], 90.00th=[ 77], 95.00th=[ 86], | 99.00th=[ 117], 99.50th=[ 129], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 95, max= 512, per=24.99%, avg=263.67, stdev=119.83, samples=46 iops : min= 5, max= 32, avg=16.09, stdev= 7.58, samples=46 lat (msec) : 10=22.92%, 20=15.36%, 50=44.66%, 100=15.36%, 250=1.69% cpu : usr=0.06%, sys=7.45%, ctx=1554, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1003KiB/s (1027kB/s), 242KiB/s-268KiB/s (248kB/s-274kB/s), io=23.4MiB (24.5MB), run=23359-23886msec WRITE: bw=1055KiB/s (1080kB/s), 258KiB/s-276KiB/s (264kB/s-282kB/s), io=24.6MiB (25.8MB), run=23359-23886msec 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=145454: Sat Aug 8 08:46:06 2026 read: IOPS=2, BW=2646KiB/s (2709kB/s)(7168KiB/2709msec) clat (usec): min=663, max=961512, avg=260788.97, stdev=316963.53 lat (usec): min=665, max=961513, avg=260790.61, stdev=316963.19 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[123208], | 30.00th=[152044], 40.00th=[152044], 50.00th=[179307], 60.00th=[189793], | 70.00th=[189793], 80.00th=[219153], 90.00th=[960496], 95.00th=[960496], | 99.00th=[960496], 99.50th=[960496], 99.90th=[960496], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 1917, max= 4096, per=48.99%, avg=2861.25, stdev=1064.09, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1890KiB/s (1935kB/s)(5120KiB/2709msec); 0 zone resets clat (msec): min=88, max=257, avg=170.72, stdev=61.07 lat (msec): min=88, max=257, avg=170.79, stdev=61.06 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 89], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 186], 80.00th=[ 186], 90.00th=[ 257], 95.00th=[ 257], | 99.00th=[ 257], 99.50th=[ 257], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 2031, max= 3835, per=32.26%, avg=2638.00, stdev=1036.67, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=66.67%, 500=8.33%, 1000=8.33% cpu : usr=0.04%, sys=36.60%, ctx=692, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145455: Sat Aug 8 08:46:06 2026 read: IOPS=0, BW=584KiB/s (598kB/s)(2048KiB/3506msec) clat (msec): min=110, max=129, avg=120.15, stdev=13.47 lat (msec): min=110, max=129, avg=120.15, stdev=13.46 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 111], | 30.00th=[ 111], 40.00th=[ 111], 50.00th=[ 111], 60.00th=[ 130], | 70.00th=[ 130], 80.00th=[ 130], 90.00th=[ 130], 95.00th=[ 130], | 99.00th=[ 130], 99.50th=[ 130], 99.90th=[ 130], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 1709, max= 1917, per=31.04%, avg=1813.00, stdev=147.08, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2921KiB/s (2991kB/s)(10.0MiB/3506msec); 0 zone resets clat (msec): min=67, max=1483, avg=315.82, stdev=425.52 lat (msec): min=67, max=1483, avg=315.91, stdev=425.52 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 94], | 30.00th=[ 103], 40.00th=[ 107], 50.00th=[ 155], 60.00th=[ 165], | 70.00th=[ 249], 80.00th=[ 313], 90.00th=[ 422], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 1917, max= 8192, per=65.38%, avg=5346.33, stdev=3177.96, samples=3 iops : min= 1, max= 8, avg= 4.67, stdev= 3.51, samples=3 lat (msec) : 100=16.67%, 250=58.33%, 500=16.67%, 2000=8.33% cpu : usr=0.06%, sys=26.11%, ctx=184, 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=145456: Sat Aug 8 08:46:06 2026 read: IOPS=1, BW=1873KiB/s (1918kB/s)(6144KiB/3280msec) clat (usec): min=510, max=180531, avg=77893.06, stdev=87985.30 lat (usec): min=511, max=180531, avg=77894.14, stdev=87984.86 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 644], 50.00th=[ 644], 60.00th=[111674], | 70.00th=[173016], 80.00th=[173016], 90.00th=[181404], 95.00th=[181404], | 99.00th=[181404], 99.50th=[181404], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 1917, max= 5930, per=56.37%, avg=3292.67, stdev=2284.71, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1873KiB/s (1918kB/s)(6144KiB/3280msec); 0 zone resets clat (msec): min=128, max=1429, avg=457.79, stdev=485.12 lat (msec): min=128, max=1430, avg=457.86, stdev=485.12 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 317], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 1917, max= 3424, per=28.58%, avg=2337.00, stdev=726.16, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=25.00% lat (msec) : 250=41.67%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=24.92%, ctx=362, 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=145457: Sat Aug 8 08:46:06 2026 read: IOPS=1, BW=1635KiB/s (1674kB/s)(5120KiB/3132msec) clat (usec): min=562, max=217564, avg=72441.26, stdev=101875.88 lat (usec): min=564, max=217565, avg=72442.31, stdev=101875.88 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 562], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 619], 60.00th=[ 619], | 70.00th=[143655], 80.00th=[143655], 90.00th=[217056], 95.00th=[217056], | 99.00th=[217056], 99.50th=[217056], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 3835, max= 4063, per=67.61%, avg=3949.00, stdev=161.22, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2289KiB/s (2344kB/s)(7168KiB/3132msec); 0 zone resets clat (msec): min=105, max=1196, avg=382.50, stdev=381.14 lat (msec): min=105, max=1196, avg=382.58, stdev=381.14 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 144], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 279], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 489], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1715, max= 4063, per=31.90%, avg=2608.67, stdev=1270.45, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=25.00% lat (msec) : 250=41.67%, 500=25.00%, 2000=8.33% cpu : usr=0.03%, sys=28.59%, ctx=334, 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=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=5841KiB/s (5982kB/s), 584KiB/s-2646KiB/s (598kB/s-2709kB/s), io=20.0MiB (20.0MB), run=2709-3506msec WRITE: bw=8178KiB/s (8374kB/s), 1873KiB/s-2921KiB/s (1918kB/s-2991kB/s), io=28.0MiB (29.4MB), run=2709-3506msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145449: Sat Aug 8 08:46:07 2026 read: IOPS=2, BW=2517KiB/s (2577kB/s)(7168KiB/2848msec) clat (msec): min=47, max=944, avg=261.42, stdev=317.86 lat (msec): min=47, max=944, avg=261.42, stdev=317.86 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 51], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 180], 60.00th=[ 184], | 70.00th=[ 184], 80.00th=[ 338], 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= 1950, max= 5215, per=68.22%, avg=3753.67, stdev=1659.20, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 write: IOPS=1, BW=1798KiB/s (1841kB/s)(5120KiB/2848msec); 0 zone resets clat (msec): min=125, max=275, avg=200.93, stdev=68.15 lat (msec): min=126, max=275, avg=201.02, stdev=68.17 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 264], 80.00th=[ 264], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 1738, max= 6119, per=42.44%, avg=3269.00, stdev=2470.45, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 50=8.33%, 100=16.67%, 250=41.67%, 500=25.00%, 1000=8.33% cpu : usr=0.04%, sys=12.54%, ctx=89, 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=145450: Sat Aug 8 08:46:07 2026 read: IOPS=0, BW=554KiB/s (568kB/s)(2048KiB/3695msec) clat (msec): min=103, max=179, avg=141.18, stdev=53.77 lat (msec): min=103, max=179, avg=141.19, stdev=53.77 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 180], 95.00th=[ 180], | 99.00th=[ 180], 99.50th=[ 180], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 1738, max= 1950, per=33.52%, avg=1844.00, stdev=149.91, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2771KiB/s (2838kB/s)(10.0MiB/3695msec); 0 zone resets clat (msec): min=67, max=1412, avg=334.02, stdev=433.39 lat (msec): min=67, max=1412, avg=334.10, stdev=433.39 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 75], | 30.00th=[ 85], 40.00th=[ 85], 50.00th=[ 120], 60.00th=[ 140], | 70.00th=[ 190], 80.00th=[ 447], 90.00th=[ 718], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 1950, max= 8192, per=79.26%, avg=6105.67, stdev=3598.92, samples=3 iops : min= 1, max= 8, avg= 5.33, stdev= 3.79, samples=3 lat (msec) : 100=33.33%, 250=41.67%, 500=8.33%, 750=8.33%, 2000=8.33% cpu : usr=0.14%, sys=13.10%, ctx=138, 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=145451: Sat Aug 8 08:46:07 2026 read: IOPS=2, BW=2057KiB/s (2106kB/s)(6144KiB/2987msec) clat (msec): min=99, max=175, avg=139.88, stdev=30.72 lat (msec): min=99, max=175, avg=139.88, stdev=30.72 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 106], | 30.00th=[ 106], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 153], | 70.00th=[ 163], 80.00th=[ 163], 90.00th=[ 176], 95.00th=[ 176], | 99.00th=[ 176], 99.50th=[ 176], 99.90th=[ 176], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 3900, max= 6119, per=91.05%, avg=5009.50, stdev=1569.07, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2057KiB/s (2106kB/s)(6144KiB/2987msec); 0 zone resets clat (msec): min=59, max=1215, avg=343.91, stdev=447.21 lat (msec): min=59, max=1215, avg=344.02, stdev=447.22 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 60], 10.00th=[ 60], 20.00th=[ 107], | 30.00th=[ 107], 40.00th=[ 109], 50.00th=[ 109], 60.00th=[ 144], | 70.00th=[ 430], 80.00th=[ 430], 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= 1950, max= 3488, per=30.91%, avg=2381.25, stdev=739.16, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=16.67%, 250=66.67%, 500=8.33%, 2000=8.33% cpu : usr=0.10%, sys=9.65%, ctx=161, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145452: Sat Aug 8 08:46:07 2026 read: IOPS=1, BW=1376KiB/s (1409kB/s)(5120KiB/3722msec) clat (msec): min=19, max=338, avg=208.31, stdev=151.74 lat (msec): min=19, max=338, avg=208.31, stdev=151.74 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 20], 10.00th=[ 20], 20.00th=[ 20], | 30.00th=[ 68], 40.00th=[ 68], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 4015, max= 4087, per=73.63%, avg=4051.00, stdev=50.91, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1926KiB/s (1972kB/s)(7168KiB/3722msec); 0 zone resets clat (msec): min=89, max=1575, avg=375.10, stdev=539.01 lat (msec): min=89, max=1575, avg=375.18, stdev=539.00 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 92], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 136], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 376], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 1735, max= 4087, per=38.46%, avg=2962.75, stdev=1296.53, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 20=8.33%, 100=25.00%, 250=25.00%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=11.21%, ctx=140, 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=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=5502KiB/s (5634kB/s), 554KiB/s-2517KiB/s (568kB/s-2577kB/s), io=20.0MiB (20.0MB), run=2848-3722msec WRITE: bw=7703KiB/s (7888kB/s), 1798KiB/s-2771KiB/s (1841kB/s-2838kB/s), io=28.0MiB (29.4MB), run=2848-3722msec 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=145464: Sat Aug 8 08:46:15 2026 read: IOPS=1, BW=7974KiB/s (8165kB/s)(12.0MiB/1541msec) clat (msec): min=426, max=578, avg=491.56, stdev=78.34 lat (msec): min=426, max=578, avg=491.56, stdev=78.34 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7968, max= 7968, per=74.94%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=46.75%, ctx=2346, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145465: Sat Aug 8 08:46:15 2026 read: IOPS=0, BW=2968KiB/s (3039kB/s)(4096KiB/1380msec) clat (nsec): min=569751k, max=569751k, avg=569750797.00, stdev= 0.00 lat (nsec): min=569753k, max=569753k, avg=569753007.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 7968, max= 7968, per=74.94%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5936KiB/s (6079kB/s)(8192KiB/1380msec); 0 zone resets clat (usec): min=372354, max=372593, avg=372473.67, stdev=168.93 lat (usec): min=372858, max=372864, avg=372861.18, stdev= 4.08 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 7968, max= 7968, per=52.11%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=29.59%, ctx=633, 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=145466: Sat Aug 8 08:46:15 2026 write: IOPS=1, BW=5734KiB/s (5872kB/s)(12.0MiB/2143msec); 0 zone resets clat (msec): min=177, max=1700, avg=690.39, stdev=874.72 lat (msec): min=178, max=1700, avg=690.72, stdev=874.88 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 192], 50.00th=[ 192], 60.00th=[ 192], | 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=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.09%, sys=12.79%, ctx=64, 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=145467: Sat Aug 8 08:46:15 2026 write: IOPS=1, BW=6250KiB/s (6400kB/s)(12.0MiB/1966msec); 0 zone resets clat (msec): min=198, max=1425, avg=644.62, stdev=678.90 lat (msec): min=199, max=1426, avg=645.14, stdev=678.83 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7968, max= 7984, per=52.16%, avg=7976.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.20%, sys=15.62%, ctx=80, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=10.4MiB/s (10.9MB/s), 2968KiB/s-7974KiB/s (3039kB/s-8165kB/s), io=16.0MiB (16.8MB), run=1380-1541msec WRITE: bw=14.9MiB/s (15.7MB/s), 5734KiB/s-6250KiB/s (5872kB/s-6400kB/s), io=32.0MiB (33.6MB), run=1380-2143msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145468: Sat Aug 8 08:46:16 2026 read: IOPS=1, BW=6876KiB/s (7041kB/s)(12.0MiB/1787msec) clat (msec): min=252, max=1200, avg=576.64, stdev=540.00 lat (msec): min=252, max=1200, avg=576.64, stdev=540.00 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=13.38%, ctx=73, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145469: Sat Aug 8 08:46:16 2026 read: IOPS=0, BW=2448KiB/s (2507kB/s)(4096KiB/1673msec) clat (nsec): min=630793k, max=630793k, avg=630793060.00, stdev= 0.00 lat (nsec): min=630796k, max=630796k, avg=630795963.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 5535, max= 5535, per=60.37%, avg=5535.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4897KiB/s (5014kB/s)(8192KiB/1673msec); 0 zone resets clat (msec): min=292, max=731, avg=512.07, stdev=310.08 lat (msec): min=293, max=731, avg=512.44, stdev=310.19 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=16.33%, ctx=74, 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=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=145470: Sat Aug 8 08:46:16 2026 write: IOPS=1, BW=4983KiB/s (5103kB/s)(12.0MiB/2466msec); 0 zone resets clat (msec): min=100, max=2222, avg=809.07, stdev=1223.89 lat (msec): min=100, max=2222, avg=809.26, stdev=1223.84 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 101], | 30.00th=[ 101], 40.00th=[ 105], 50.00th=[ 105], 60.00th=[ 105], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] lat (msec) : 250=66.67%, >=2000=33.33% cpu : usr=0.04%, sys=6.98%, ctx=40, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145471: Sat Aug 8 08:46:16 2026 write: IOPS=1, BW=5902KiB/s (6044kB/s)(12.0MiB/2082msec); 0 zone resets clat (msec): min=365, max=1220, avg=659.95, stdev=485.94 lat (msec): min=365, max=1221, avg=660.61, stdev=485.62 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 393], | 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= 5641, max= 8159, per=51.93%, avg=6900.00, stdev=1780.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=16.10%, ctx=59, 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=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=9168KiB/s (9388kB/s), 2448KiB/s-6876KiB/s (2507kB/s-7041kB/s), io=16.0MiB (16.8MB), run=1673-1787msec WRITE: bw=12.0MiB/s (13.6MB/s), 4897KiB/s-5902KiB/s (5014kB/s-6044kB/s), io=32.0MiB (33.6MB), run=1673-2466msec