== sanity test 398b: DIO and buffer IO race ============== 02:52:58 (1772178778) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.81147 s, 17.9 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=148102: Fri Feb 27 02:54:03 2026 read: IOPS=27, BW=108KiB/s (111kB/s)(5992KiB/55459msec) clat (usec): min=143, max=138397, avg=18398.12, stdev=11262.99 lat (usec): min=144, max=138397, avg=18399.96, stdev=11262.85 clat percentiles (usec): | 1.00th=[ 235], 5.00th=[ 603], 10.00th=[ 7701], 20.00th=[ 10552], | 30.00th=[ 12256], 40.00th=[ 14484], 50.00th=[ 16581], 60.00th=[ 19006], | 70.00th=[ 21890], 80.00th=[ 25822], 90.00th=[ 31327], 95.00th=[ 36963], | 99.00th=[ 56886], 99.50th=[ 64750], 99.90th=[ 93848], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 20, max= 182, per=25.10%, avg=108.20, stdev=31.91, samples=110 iops : min= 5, max= 45, avg=26.57, stdev= 7.97, samples=110 write: IOPS=28, BW=114KiB/s (116kB/s)(6296KiB/55459msec); 0 zone resets clat (usec): min=909, max=644328, avg=17534.39, stdev=22292.59 lat (usec): min=910, max=644329, avg=17535.56, stdev=22292.59 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1663], 10.00th=[ 2376], 20.00th=[ 3359], | 30.00th=[ 5473], 40.00th=[ 9765], 50.00th=[ 13304], 60.00th=[ 17171], | 70.00th=[ 22152], 80.00th=[ 27919], 90.00th=[ 38536], 95.00th=[ 47449], | 99.00th=[ 70779], 99.50th=[ 85459], 99.90th=[117965], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 48, max= 216, per=25.41%, avg=114.59, stdev=30.68, samples=109 iops : min= 12, max= 54, avg=28.17, stdev= 7.71, samples=109 lat (usec) : 250=0.59%, 500=1.40%, 750=0.72%, 1000=0.36% lat (msec) : 2=3.87%, 4=8.76%, 10=13.54%, 20=35.81%, 50=32.03% lat (msec) : 100=2.77%, 250=0.13%, 750=0.03% cpu : usr=0.11%, sys=17.47%, ctx=7826, 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=148103: Fri Feb 27 02:54:03 2026 read: IOPS=27, BW=108KiB/s (111kB/s)(5940KiB/54777msec) clat (usec): min=139, max=173956, avg=18313.42, stdev=12500.67 lat (usec): min=139, max=173957, avg=18314.38, stdev=12500.68 clat percentiles (usec): | 1.00th=[ 233], 5.00th=[ 519], 10.00th=[ 7504], 20.00th=[ 10028], | 30.00th=[ 11731], 40.00th=[ 13566], 50.00th=[ 15664], 60.00th=[ 18482], | 70.00th=[ 21890], 80.00th=[ 26084], 90.00th=[ 32375], 95.00th=[ 38536], | 99.00th=[ 62129], 99.50th=[ 71828], 99.90th=[108528], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 13, max= 168, per=25.11%, avg=108.23, stdev=30.19, samples=108 iops : min= 3, max= 42, avg=26.57, stdev= 7.52, samples=108 write: IOPS=28, BW=116KiB/s (119kB/s)(6348KiB/54777msec); 0 zone resets clat (usec): min=695, max=663812, avg=17200.09, stdev=22141.51 lat (usec): min=695, max=663812, avg=17202.36, stdev=22141.55 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1614], 10.00th=[ 2311], 20.00th=[ 3458], | 30.00th=[ 5866], 40.00th=[ 10421], 50.00th=[ 13829], 60.00th=[ 17171], | 70.00th=[ 21103], 80.00th=[ 27132], 90.00th=[ 35390], 95.00th=[ 43254], | 99.00th=[ 69731], 99.50th=[ 82314], 99.90th=[131597], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 33, max= 192, per=25.53%, avg=115.13, stdev=31.91, samples=108 iops : min= 8, max= 48, avg=28.31, stdev= 8.02, samples=108 lat (usec) : 250=0.59%, 500=1.69%, 750=0.98%, 1000=0.36% lat (msec) : 2=3.78%, 4=8.43%, 10=13.67%, 20=36.13%, 50=31.87% lat (msec) : 100=2.25%, 250=0.23%, 750=0.03% cpu : usr=0.13%, sys=17.45%, ctx=7751, 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=148104: Fri Feb 27 02:54:03 2026 read: IOPS=27, BW=109KiB/s (111kB/s)(6028KiB/55551msec) clat (usec): min=148, max=672806, avg=19215.59, stdev=20968.62 lat (usec): min=148, max=672808, avg=19216.57, stdev=20968.63 clat percentiles (usec): | 1.00th=[ 262], 5.00th=[ 603], 10.00th=[ 8029], 20.00th=[ 10552], | 30.00th=[ 12256], 40.00th=[ 13829], 50.00th=[ 16057], 60.00th=[ 18744], | 70.00th=[ 21890], 80.00th=[ 26346], 90.00th=[ 32900], 95.00th=[ 39060], | 99.00th=[ 65799], 99.50th=[ 80217], 99.90th=[127402], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 13, max= 176, per=25.16%, avg=108.42, stdev=31.07, samples=110 iops : min= 3, max= 44, avg=26.63, stdev= 7.78, samples=110 write: IOPS=28, BW=113KiB/s (115kB/s)(6260KiB/55551msec); 0 zone resets clat (usec): min=773, max=134674, avg=16821.71, stdev=15189.34 lat (usec): min=774, max=134675, avg=16824.95, stdev=15188.85 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1680], 10.00th=[ 2311], 20.00th=[ 3490], | 30.00th=[ 5145], 40.00th=[ 9634], 50.00th=[ 13173], 60.00th=[ 16909], | 70.00th=[ 21627], 80.00th=[ 27919], 90.00th=[ 36963], 95.00th=[ 45351], | 99.00th=[ 62129], 99.50th=[ 74974], 99.90th=[116917], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 27, max= 184, per=24.94%, avg=112.50, stdev=32.03, samples=110 iops : min= 6, max= 46, avg=27.64, stdev= 8.06, samples=110 lat (usec) : 250=0.39%, 500=1.53%, 750=0.81%, 1000=0.36% lat (msec) : 2=3.81%, 4=8.07%, 10=14.45%, 20=35.81%, 50=31.74% lat (msec) : 100=2.83%, 250=0.16%, 750=0.03% cpu : usr=0.12%, sys=17.49%, ctx=7912, 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=148105: Fri Feb 27 02:54:03 2026 read: IOPS=27, BW=109KiB/s (111kB/s)(6052KiB/55651msec) clat (usec): min=124, max=149013, avg=18351.71, stdev=12278.01 lat (usec): min=124, max=149014, avg=18354.15, stdev=12279.20 clat percentiles (usec): | 1.00th=[ 221], 5.00th=[ 490], 10.00th=[ 7242], 20.00th=[ 9896], | 30.00th=[ 11600], 40.00th=[ 13698], 50.00th=[ 16581], 60.00th=[ 19268], | 70.00th=[ 21890], 80.00th=[ 26084], 90.00th=[ 32375], 95.00th=[ 38011], | 99.00th=[ 57410], 99.50th=[ 73925], 99.90th=[110625], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 47, max= 175, per=25.47%, avg=109.77, stdev=28.04, samples=108 iops : min= 11, max= 43, avg=26.96, stdev= 7.06, samples=108 write: IOPS=28, BW=112KiB/s (115kB/s)(6236KiB/55651msec); 0 zone resets clat (usec): min=718, max=776763, avg=17704.26, stdev=24642.41 lat (usec): min=719, max=776764, avg=17705.83, stdev=24642.92 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1631], 10.00th=[ 2311], 20.00th=[ 3458], | 30.00th=[ 5997], 40.00th=[ 10290], 50.00th=[ 13829], 60.00th=[ 17433], | 70.00th=[ 22152], 80.00th=[ 28443], 90.00th=[ 36439], 95.00th=[ 44827], | 99.00th=[ 72877], 99.50th=[ 85459], 99.90th=[128451], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 16, max= 191, per=24.95%, avg=112.52, stdev=30.66, samples=109 iops : min= 4, max= 47, avg=27.65, stdev= 7.68, samples=109 lat (usec) : 250=0.98%, 500=1.53%, 750=0.68%, 1000=0.59% lat (msec) : 2=4.04%, 4=7.91%, 10=14.16%, 20=34.57%, 50=33.11% lat (msec) : 100=2.21%, 250=0.20%, 1000=0.03% cpu : usr=0.16%, sys=17.35%, ctx=7781, 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=431KiB/s (442kB/s), 108KiB/s-109KiB/s (111kB/s-111kB/s), io=23.4MiB (24.6MB), run=54777-55651msec WRITE: bw=452KiB/s (463kB/s), 112KiB/s-116KiB/s (115kB/s-119kB/s), io=24.6MiB (25.7MB), run=54777-55651msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148107: Fri Feb 27 02:54:56 2026 read: IOPS=13, BW=55.8KiB/s (57.1kB/s)(5992KiB/107401msec) clat (msec): min=3, max=632, avg=19.72, stdev=21.90 lat (msec): min=3, max=632, avg=19.72, stdev=21.90 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 23], 80.00th=[ 27], 90.00th=[ 35], 95.00th=[ 49], | 99.00th=[ 79], 99.50th=[ 87], 99.90th=[ 159], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 175, per=25.14%, avg=55.82, stdev=28.86, samples=211 iops : min= 1, max= 43, avg=13.55, stdev= 7.24, samples=211 write: IOPS=14, BW=58.6KiB/s (60.0kB/s)(6296KiB/107401msec); 0 zone resets clat (msec): min=16, max=205, avg=49.35, stdev=22.10 lat (msec): min=16, max=205, avg=49.35, stdev=22.10 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 36], 40.00th=[ 41], 50.00th=[ 45], 60.00th=[ 50], | 70.00th=[ 56], 80.00th=[ 64], 90.00th=[ 79], 95.00th=[ 92], | 99.00th=[ 121], 99.50th=[ 134], 99.90th=[ 201], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 7, max= 104, per=25.19%, avg=58.43, stdev=20.83, samples=212 iops : min= 1, max= 26, avg=14.20, stdev= 5.29, samples=212 lat (msec) : 4=0.16%, 10=15.36%, 20=15.63%, 50=46.94%, 100=20.21% lat (msec) : 250=1.66%, 750=0.03% cpu : usr=0.07%, sys=5.14%, ctx=6315, 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=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=148108: Fri Feb 27 02:54:56 2026 read: IOPS=13, BW=54.9KiB/s (56.3kB/s)(5940KiB/108128msec) clat (msec): min=3, max=707, avg=19.38, stdev=23.11 lat (msec): min=3, max=707, avg=19.39, stdev=23.11 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 27], 90.00th=[ 35], 95.00th=[ 45], | 99.00th=[ 70], 99.50th=[ 87], 99.90th=[ 161], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 136, per=24.71%, avg=54.86, stdev=29.16, samples=214 iops : min= 1, max= 34, avg=13.31, stdev= 7.35, samples=214 write: IOPS=14, BW=58.7KiB/s (60.1kB/s)(6348KiB/108128msec); 0 zone resets clat (msec): min=15, max=201, avg=49.89, stdev=22.39 lat (msec): min=15, max=201, avg=49.89, stdev=22.39 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 36], 40.00th=[ 40], 50.00th=[ 45], 60.00th=[ 51], | 70.00th=[ 56], 80.00th=[ 66], 90.00th=[ 80], 95.00th=[ 93], | 99.00th=[ 122], 99.50th=[ 153], 99.90th=[ 201], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 15, max= 136, per=25.24%, avg=58.55, stdev=21.20, samples=214 iops : min= 3, max= 34, avg=14.23, stdev= 5.38, samples=214 lat (msec) : 4=0.07%, 10=14.58%, 20=16.28%, 50=46.42%, 100=20.87% lat (msec) : 250=1.76%, 750=0.03% cpu : usr=0.08%, sys=5.14%, ctx=6318, 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=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=148109: Fri Feb 27 02:54:56 2026 read: IOPS=14, BW=56.0KiB/s (57.4kB/s)(6028KiB/107601msec) clat (msec): min=3, max=145, avg=19.38, stdev=14.35 lat (msec): min=3, max=145, avg=19.38, stdev=14.35 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 23], 80.00th=[ 27], 90.00th=[ 37], 95.00th=[ 46], | 99.00th=[ 74], 99.50th=[ 82], 99.90th=[ 126], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 7, max= 136, per=25.22%, avg=55.98, stdev=27.45, samples=213 iops : min= 1, max= 34, avg=13.59, stdev= 6.94, samples=213 write: IOPS=14, BW=58.2KiB/s (59.6kB/s)(6260KiB/107601msec); 0 zone resets clat (msec): min=16, max=746, avg=49.97, stdev=28.65 lat (msec): min=16, max=746, avg=49.97, stdev=28.65 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 36], 40.00th=[ 40], 50.00th=[ 45], 60.00th=[ 50], | 70.00th=[ 56], 80.00th=[ 64], 90.00th=[ 80], 95.00th=[ 91], | 99.00th=[ 128], 99.50th=[ 169], 99.90th=[ 203], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 16, max= 112, per=25.03%, avg=58.08, stdev=21.46, samples=213 iops : min= 4, max= 28, avg=14.11, stdev= 5.44, samples=213 lat (msec) : 4=0.10%, 10=13.93%, 20=16.86%, 50=47.49%, 100=19.82% lat (msec) : 250=1.76%, 750=0.03% cpu : usr=0.07%, sys=5.20%, ctx=6265, 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=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=148110: Fri Feb 27 02:54:56 2026 read: IOPS=14, BW=56.2KiB/s (57.6kB/s)(6052KiB/107619msec) clat (msec): min=3, max=185, avg=19.43, stdev=15.41 lat (msec): min=3, max=185, avg=19.43, stdev=15.41 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 27], 90.00th=[ 35], 95.00th=[ 48], | 99.00th=[ 74], 99.50th=[ 90], 99.90th=[ 171], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 7, max= 143, per=25.44%, avg=56.47, stdev=28.59, samples=212 iops : min= 1, max= 35, avg=13.71, stdev= 7.20, samples=212 write: IOPS=14, BW=57.9KiB/s (59.3kB/s)(6236KiB/107619msec); 0 zone resets clat (msec): min=16, max=760, avg=50.08, stdev=28.70 lat (msec): min=16, max=760, avg=50.08, stdev=28.70 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 36], 40.00th=[ 40], 50.00th=[ 44], 60.00th=[ 50], | 70.00th=[ 55], 80.00th=[ 65], 90.00th=[ 82], 95.00th=[ 92], | 99.00th=[ 129], 99.50th=[ 144], 99.90th=[ 203], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 16, max= 112, per=24.92%, avg=57.82, stdev=20.83, samples=213 iops : min= 4, max= 28, avg=14.05, stdev= 5.28, samples=213 lat (msec) : 4=0.13%, 10=14.49%, 20=16.70%, 50=47.27%, 100=19.60% lat (msec) : 250=1.79%, 1000=0.03% cpu : usr=0.08%, sys=5.17%, ctx=6252, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=222KiB/s (227kB/s), 54.9KiB/s-56.2KiB/s (56.3kB/s-57.6kB/s), io=23.4MiB (24.6MB), run=107401-108128msec WRITE: bw=233KiB/s (238kB/s), 57.9KiB/s-58.7KiB/s (59.3kB/s-60.1kB/s), io=24.6MiB (25.7MB), run=107401-108128msec 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=148142: Fri Feb 27 02:55:13 2026 read: IOPS=27, BW=443KiB/s (454kB/s)(5920KiB/13353msec) clat (usec): min=181, max=69749, avg=17629.19, stdev=11795.09 lat (usec): min=182, max=69750, avg=17630.16, stdev=11795.13 clat percentiles (usec): | 1.00th=[ 204], 5.00th=[ 375], 10.00th=[ 510], 20.00th=[ 9241], | 30.00th=[12256], 40.00th=[14615], 50.00th=[16712], 60.00th=[19006], | 70.00th=[22152], 80.00th=[25822], 90.00th=[32637], 95.00th=[38011], | 99.00th=[51119], 99.50th=[64750], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 223, max= 670, per=25.21%, avg=441.35, stdev=112.42, samples=26 iops : min= 13, max= 41, avg=27.04, stdev= 7.01, samples=26 write: IOPS=29, BW=477KiB/s (488kB/s)(6368KiB/13353msec); 0 zone resets clat (usec): min=1030, max=98128, avg=16870.33, stdev=15241.14 lat (usec): min=1032, max=98129, avg=16872.54, stdev=15240.95 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1909], 10.00th=[ 2835], 20.00th=[ 4146], | 30.00th=[ 5604], 40.00th=[ 8979], 50.00th=[12649], 60.00th=[16450], | 70.00th=[21365], 80.00th=[28181], 90.00th=[38011], 95.00th=[49546], | 99.00th=[63701], 99.50th=[83362], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 168, max= 766, per=26.05%, avg=479.92, stdev=140.77, samples=26 iops : min= 10, max= 47, avg=29.46, stdev= 8.74, samples=26 lat (usec) : 250=1.04%, 500=3.52%, 750=2.34%, 1000=0.13% lat (msec) : 2=3.65%, 4=7.29%, 10=14.84%, 20=32.16%, 50=32.29% lat (msec) : 100=2.73% cpu : usr=0.16%, sys=20.32%, ctx=1925, 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=148144: Fri Feb 27 02:55:13 2026 read: IOPS=26, BW=423KiB/s (434kB/s)(5744KiB/13564msec) clat (usec): min=224, max=132314, avg=19748.32, stdev=14229.02 lat (usec): min=225, max=132314, avg=19749.27, stdev=14228.96 clat percentiles (usec): | 1.00th=[ 245], 5.00th=[ 351], 10.00th=[ 510], 20.00th=[ 11076], | 30.00th=[ 13566], 40.00th=[ 15926], 50.00th=[ 17957], 60.00th=[ 20579], | 70.00th=[ 24773], 80.00th=[ 27657], 90.00th=[ 34341], 95.00th=[ 39060], | 99.00th=[ 79168], 99.50th=[ 94897], 99.90th=[132645], 99.95th=[132645], | 99.99th=[132645] bw ( KiB/s): min= 255, max= 576, per=24.03%, avg=420.77, stdev=94.53, samples=26 iops : min= 15, max= 36, avg=25.77, stdev= 6.02, samples=26 write: IOPS=30, BW=482KiB/s (494kB/s)(6544KiB/13564msec); 0 zone resets clat (usec): min=1070, max=80023, avg=15700.27, stdev=13659.16 lat (usec): min=1071, max=80023, avg=15702.70, stdev=13658.99 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2769], 10.00th=[ 3392], 20.00th=[ 4424], | 30.00th=[ 5735], 40.00th=[ 7767], 50.00th=[12125], 60.00th=[15270], | 70.00th=[19268], 80.00th=[25035], 90.00th=[33162], 95.00th=[44827], | 99.00th=[60031], 99.50th=[63177], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 284, max= 702, per=25.64%, avg=472.35, stdev=128.05, samples=26 iops : min= 17, max= 43, avg=28.96, stdev= 7.98, samples=26 lat (usec) : 250=0.78%, 500=3.65%, 750=1.17%, 1000=0.26% lat (msec) : 2=1.30%, 4=7.29%, 10=17.32%, 20=33.46%, 50=31.12% lat (msec) : 100=3.52%, 250=0.13% cpu : usr=0.15%, sys=21.16%, ctx=2008, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148145: Fri Feb 27 02:55:13 2026 read: IOPS=28, BW=457KiB/s (468kB/s)(6256KiB/13678msec) clat (usec): min=150, max=93143, avg=18311.80, stdev=12738.16 lat (usec): min=150, max=93144, avg=18312.87, stdev=12738.08 clat percentiles (usec): | 1.00th=[ 229], 5.00th=[ 343], 10.00th=[ 453], 20.00th=[ 9896], | 30.00th=[12911], 40.00th=[15139], 50.00th=[17171], 60.00th=[20055], | 70.00th=[23462], 80.00th=[26608], 90.00th=[32900], 95.00th=[40109], | 99.00th=[59507], 99.50th=[80217], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 318, max= 640, per=26.13%, avg=457.48, stdev=102.11, samples=27 iops : min= 19, max= 40, avg=28.04, stdev= 6.48, samples=27 write: IOPS=27, BW=441KiB/s (452kB/s)(6032KiB/13678msec); 0 zone resets clat (usec): min=1443, max=144604, avg=16954.03, stdev=15148.87 lat (usec): min=1445, max=144606, avg=16959.26, stdev=15147.86 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2343], 10.00th=[ 3032], 20.00th=[ 4686], | 30.00th=[ 6390], 40.00th=[ 9765], 50.00th=[ 12911], 60.00th=[ 17171], | 70.00th=[ 21627], 80.00th=[ 27919], 90.00th=[ 35914], 95.00th=[ 42206], | 99.00th=[ 71828], 99.50th=[ 79168], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 256, max= 702, per=23.57%, avg=434.19, stdev=119.22, samples=27 iops : min= 16, max= 43, avg=26.59, stdev= 7.31, samples=27 lat (usec) : 250=1.04%, 500=4.56%, 750=1.30%, 1000=0.78% lat (msec) : 2=1.82%, 4=6.51%, 10=14.19%, 20=32.55%, 50=35.03% lat (msec) : 100=2.08%, 250=0.13% cpu : usr=0.12%, sys=20.41%, ctx=2012, 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=148146: Fri Feb 27 02:55:13 2026 read: IOPS=28, BW=449KiB/s (459kB/s)(6032KiB/13449msec) clat (usec): min=168, max=77662, avg=18541.35, stdev=13685.68 lat (usec): min=170, max=77663, avg=18542.27, stdev=13685.73 clat percentiles (usec): | 1.00th=[ 206], 5.00th=[ 314], 10.00th=[ 453], 20.00th=[ 1450], | 30.00th=[12125], 40.00th=[15008], 50.00th=[17695], 60.00th=[20841], | 70.00th=[23725], 80.00th=[28967], 90.00th=[35390], 95.00th=[40633], | 99.00th=[59507], 99.50th=[77071], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 255, max= 640, per=25.19%, avg=441.12, stdev=101.61, samples=26 iops : min= 15, max= 40, avg=27.04, stdev= 6.42, samples=26 write: IOPS=29, BW=465KiB/s (476kB/s)(6256KiB/13449msec); 0 zone resets clat (usec): min=1357, max=126573, avg=16286.14, stdev=16388.14 lat (usec): min=1358, max=126575, avg=16288.52, stdev=16387.82 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2245], 10.00th=[ 3032], 20.00th=[ 4146], | 30.00th=[ 5604], 40.00th=[ 8094], 50.00th=[ 10945], 60.00th=[ 15139], | 70.00th=[ 18482], 80.00th=[ 25822], 90.00th=[ 33817], 95.00th=[ 47973], | 99.00th=[ 85459], 99.50th=[ 88605], 99.90th=[126354], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 319, max= 860, per=25.21%, avg=464.42, stdev=115.76, samples=26 iops : min= 19, max= 53, avg=28.50, stdev= 7.21, samples=26 lat (usec) : 250=1.30%, 500=5.08%, 750=2.34%, 1000=0.52% lat (msec) : 2=2.99%, 4=7.29%, 10=15.49%, 20=30.60%, 50=30.86% lat (msec) : 100=3.39%, 250=0.13% cpu : usr=0.18%, sys=20.20%, ctx=1967, 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=1751KiB/s (1793kB/s), 423KiB/s-457KiB/s (434kB/s-468kB/s), io=23.4MiB (24.5MB), run=13353-13678msec WRITE: bw=1842KiB/s (1887kB/s), 441KiB/s-482KiB/s (452kB/s-494kB/s), io=24.6MiB (25.8MB), run=13353-13678msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148139: Fri Feb 27 02:55:27 2026 read: IOPS=13, BW=213KiB/s (218kB/s)(5920KiB/27820msec) clat (usec): min=4295, max=99216, avg=21219.80, stdev=16439.61 lat (usec): min=4296, max=99217, avg=21221.02, stdev=16439.53 clat percentiles (usec): | 1.00th=[ 5538], 5.00th=[ 6259], 10.00th=[ 7439], 20.00th=[ 8455], | 30.00th=[10421], 40.00th=[12518], 50.00th=[15795], 60.00th=[19530], | 70.00th=[25297], 80.00th=[31065], 90.00th=[41157], 95.00th=[54789], | 99.00th=[88605], 99.50th=[98042], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 32, max= 416, per=24.54%, avg=211.07, stdev=96.10, samples=55 iops : min= 2, max= 26, avg=12.73, stdev= 6.04, samples=55 write: IOPS=14, BW=229KiB/s (234kB/s)(6368KiB/27820msec); 0 zone resets clat (msec): min=17, max=212, avg=49.94, stdev=22.18 lat (msec): min=17, max=212, avg=49.94, stdev=22.18 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 34], | 30.00th=[ 38], 40.00th=[ 41], 50.00th=[ 44], 60.00th=[ 48], | 70.00th=[ 57], 80.00th=[ 64], 90.00th=[ 78], 95.00th=[ 91], | 99.00th=[ 121], 99.50th=[ 184], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 31, max= 416, per=25.21%, avg=228.15, stdev=88.84, samples=55 iops : min= 1, max= 26, avg=13.78, stdev= 5.72, samples=55 lat (msec) : 10=13.67%, 20=15.89%, 50=48.31%, 100=20.57%, 250=1.56% cpu : usr=0.08%, sys=5.55%, ctx=1644, 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=148140: Fri Feb 27 02:55:27 2026 read: IOPS=13, BW=209KiB/s (214kB/s)(5744KiB/27448msec) clat (msec): min=4, max=103, avg=19.23, stdev=14.82 lat (msec): min=4, max=103, avg=19.23, stdev=14.82 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 37], 95.00th=[ 49], | 99.00th=[ 74], 99.50th=[ 96], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 31, max= 512, per=24.77%, avg=212.98, stdev=107.55, samples=53 iops : min= 1, max= 32, avg=12.83, stdev= 6.91, samples=53 write: IOPS=14, BW=238KiB/s (244kB/s)(6544KiB/27448msec); 0 zone resets clat (msec): min=20, max=155, avg=50.02, stdev=21.87 lat (msec): min=20, max=155, avg=50.02, stdev=21.87 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 28], 10.00th=[ 30], 20.00th=[ 34], | 30.00th=[ 37], 40.00th=[ 40], 50.00th=[ 44], 60.00th=[ 50], | 70.00th=[ 56], 80.00th=[ 64], 90.00th=[ 79], 95.00th=[ 91], | 99.00th=[ 136], 99.50th=[ 146], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 96, max= 384, per=26.25%, avg=237.56, stdev=79.98, samples=54 iops : min= 6, max= 24, avg=14.37, stdev= 5.14, samples=54 lat (msec) : 10=15.23%, 20=14.84%, 50=47.40%, 100=20.83%, 250=1.69% cpu : usr=0.07%, sys=5.41%, ctx=1617, 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=148141: Fri Feb 27 02:55:27 2026 read: IOPS=14, BW=228KiB/s (233kB/s)(6256KiB/27449msec) clat (msec): min=4, max=183, avg=19.83, stdev=16.70 lat (msec): min=4, max=183, avg=19.83, stdev=16.70 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 28], 90.00th=[ 38], 95.00th=[ 54], | 99.00th=[ 77], 99.50th=[ 78], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 63, max= 576, per=26.67%, avg=229.37, stdev=122.33, samples=54 iops : min= 3, max= 36, avg=13.85, stdev= 7.76, samples=54 write: IOPS=13, BW=220KiB/s (225kB/s)(6032KiB/27449msec); 0 zone resets clat (msec): min=18, max=186, avg=52.17, stdev=24.19 lat (msec): min=18, max=186, avg=52.17, stdev=24.19 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 27], 10.00th=[ 29], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 42], 50.00th=[ 47], 60.00th=[ 52], | 70.00th=[ 58], 80.00th=[ 69], 90.00th=[ 85], 95.00th=[ 101], | 99.00th=[ 146], 99.50th=[ 159], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 95, max= 384, per=24.04%, avg=217.56, stdev=81.01, samples=54 iops : min= 5, max= 24, avg=13.11, stdev= 5.21, samples=54 lat (msec) : 10=15.76%, 20=17.32%, 50=43.49%, 100=20.70%, 250=2.73% cpu : usr=0.09%, sys=5.69%, ctx=1674, 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=148143: Fri Feb 27 02:55:27 2026 read: IOPS=13, BW=218KiB/s (223kB/s)(6032KiB/27720msec) clat (msec): min=4, max=111, avg=19.43, stdev=15.76 lat (msec): min=4, max=111, avg=19.43, stdev=15.76 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 27], 90.00th=[ 36], 95.00th=[ 54], | 99.00th=[ 87], 99.50th=[ 101], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 31, max= 480, per=25.12%, avg=216.07, stdev=103.70, samples=55 iops : min= 1, max= 30, avg=13.04, stdev= 6.65, samples=55 write: IOPS=14, BW=226KiB/s (231kB/s)(6256KiB/27720msec); 0 zone resets clat (msec): min=20, max=209, avg=51.95, stdev=25.05 lat (msec): min=20, max=209, avg=51.95, stdev=25.05 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 35], | 30.00th=[ 38], 40.00th=[ 42], 50.00th=[ 46], 60.00th=[ 52], | 70.00th=[ 57], 80.00th=[ 67], 90.00th=[ 80], 95.00th=[ 102], | 99.00th=[ 148], 99.50th=[ 188], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 95, max= 416, per=24.95%, avg=225.84, stdev=86.40, samples=55 iops : min= 5, max= 26, avg=13.64, stdev= 5.53, samples=55 lat (msec) : 10=15.76%, 20=15.36%, 50=44.66%, 100=21.48%, 250=2.73% cpu : usr=0.07%, sys=5.56%, ctx=1650, 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=861KiB/s (882kB/s), 209KiB/s-228KiB/s (214kB/s-233kB/s), io=23.4MiB (24.5MB), run=27448-27820msec WRITE: bw=906KiB/s (928kB/s), 220KiB/s-238KiB/s (225kB/s-244kB/s), io=24.6MiB (25.8MB), run=27448-27820msec 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=148158: Fri Feb 27 02:55:37 2026 read: IOPS=2, BW=2109KiB/s (2159kB/s)(7168KiB/3399msec) clat (usec): min=1036, max=1523.8k, avg=327088.72, stdev=534375.45 lat (usec): min=1037, max=1523.8k, avg=327090.05, stdev=534375.98 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1037], 10.00th=[ 1037], | 20.00th=[ 53740], 30.00th=[ 104334], 40.00th=[ 104334], | 50.00th=[ 162530], 60.00th=[ 193987], 70.00th=[ 193987], | 80.00th=[ 248513], 90.00th=[1518339], 95.00th=[1518339], | 99.00th=[1518339], 99.50th=[1518339], 99.90th=[1518339], | 99.95th=[1518339], 99.99th=[1518339] bw ( KiB/s): min=10219, max=10219, per=100.00%, avg=10219.00, stdev= 0.00, samples=1 iops : min= 9, max= 9, avg= 9.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1506KiB/s (1542kB/s)(5120KiB/3399msec); 0 zone resets clat (msec): min=124, max=306, avg=209.22, stdev=74.58 lat (msec): min=124, max=306, avg=209.28, stdev=74.59 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 2035, max= 4071, per=39.56%, avg=2716.33, stdev=1173.18, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 100=8.33%, 250=66.67%, 500=8.33%, 2000=8.33% cpu : usr=0.03%, sys=33.02%, ctx=1344, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148159: Fri Feb 27 02:55:37 2026 read: IOPS=0, BW=491KiB/s (502kB/s)(2048KiB/4175msec) clat (msec): min=165, max=216, avg=191.01, stdev=36.31 lat (msec): min=165, max=216, avg=191.01, stdev=36.31 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 218], | 70.00th=[ 218], 80.00th=[ 218], 90.00th=[ 218], 95.00th=[ 218], | 99.00th=[ 218], 99.50th=[ 218], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 1815, max= 2015, per=39.04%, avg=1915.00, stdev=141.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2453KiB/s (2512kB/s)(10.0MiB/4175msec); 0 zone resets clat (msec): min=81, max=1536, avg=371.80, stdev=459.86 lat (msec): min=81, max=1536, avg=371.88, stdev=459.87 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 97], | 30.00th=[ 111], 40.00th=[ 136], 50.00th=[ 174], 60.00th=[ 203], | 70.00th=[ 232], 80.00th=[ 359], 90.00th=[ 793], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 2035, max= 6131, per=53.38%, avg=3665.60, stdev=1711.34, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.79, samples=5 lat (msec) : 100=16.67%, 250=58.33%, 500=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=26.67%, ctx=290, 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=148160: Fri Feb 27 02:55:37 2026 read: IOPS=1, BW=1723KiB/s (1765kB/s)(6144KiB/3565msec) clat (msec): min=69, max=239, avg=158.58, stdev=58.51 lat (msec): min=69, max=239, avg=158.58, stdev=58.51 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 122], | 30.00th=[ 122], 40.00th=[ 155], 50.00th=[ 155], 60.00th=[ 176], | 70.00th=[ 190], 80.00th=[ 190], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 2035, max= 4087, per=55.43%, avg=2719.00, stdev=1184.72, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1723KiB/s (1765kB/s)(6144KiB/3565msec); 0 zone resets clat (msec): min=122, max=1563, avg=432.96, stdev=558.09 lat (msec): min=122, max=1563, avg=433.03, stdev=558.10 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 131], | 30.00th=[ 131], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 247], | 70.00th=[ 305], 80.00th=[ 305], 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= 2035, max= 3676, per=35.64%, avg=2447.25, stdev=819.18, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=75.00%, 500=8.33%, 2000=8.33% cpu : usr=0.00%, sys=26.07%, ctx=305, 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=148161: Fri Feb 27 02:55:37 2026 read: IOPS=1, BW=1328KiB/s (1360kB/s)(5120KiB/3854msec) clat (usec): min=1122, max=51614, avg=16191.98, stdev=22200.96 lat (usec): min=1123, max=51614, avg=16192.98, stdev=22200.54 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1123], 10.00th=[ 1123], 20.00th=[ 1123], | 30.00th=[ 1418], 40.00th=[ 1418], 50.00th=[ 2089], 60.00th=[ 2089], | 70.00th=[24773], 80.00th=[24773], 90.00th=[51643], 95.00th=[51643], | 99.00th=[51643], 99.50th=[51643], 99.90th=[51643], 99.95th=[51643], | 99.99th=[51643] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1860KiB/s (1905kB/s)(7168KiB/3854msec); 0 zone resets clat (msec): min=139, max=2035, avg=516.47, stdev=677.56 lat (msec): min=139, max=2035, avg=516.55, stdev=677.57 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 199], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 243], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 443], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 1796, max= 4031, per=36.03%, avg=2474.25, stdev=1043.93, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 2=16.67%, 4=8.33%, 50=8.33%, 100=8.33%, 250=33.33% lat (msec) : 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=20.24%, ctx=154, 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=4905KiB/s (5023kB/s), 491KiB/s-2109KiB/s (502kB/s-2159kB/s), io=20.0MiB (20.0MB), run=3399-4175msec WRITE: bw=6868KiB/s (7032kB/s), 1506KiB/s-2453KiB/s (1542kB/s-2512kB/s), io=28.0MiB (29.4MB), run=3399-4175msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148162: Fri Feb 27 02:55:37 2026 read: IOPS=1, BW=1622KiB/s (1661kB/s)(7168KiB/4418msec) clat (msec): min=38, max=1470, avg=481.74, stdev=585.84 lat (msec): min=38, max=1470, avg=481.74, stdev=585.84 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 39], 10.00th=[ 39], 20.00th=[ 48], | 30.00th=[ 105], 40.00th=[ 105], 50.00th=[ 124], 60.00th=[ 456], | 70.00th=[ 456], 80.00th=[ 1133], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 2035, max= 4000, per=54.64%, avg=2532.75, stdev=978.19, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1159KiB/s (1187kB/s)(5120KiB/4418msec); 0 zone resets clat (msec): min=62, max=426, avg=185.08, stdev=139.96 lat (msec): min=62, max=426, avg=185.16, stdev=139.97 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 63], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 150], 60.00th=[ 150], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 4000, max= 4000, per=61.64%, avg=4000.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 50=16.67%, 100=8.33%, 250=41.67%, 500=16.67%, 2000=16.67% cpu : usr=0.05%, sys=6.95%, ctx=85, 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=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=148163: Fri Feb 27 02:55:37 2026 read: IOPS=0, BW=467KiB/s (478kB/s)(2048KiB/4385msec) clat (usec): min=63018, max=75611, avg=69314.91, stdev=8904.82 lat (usec): min=63020, max=75612, avg=69316.74, stdev=8904.01 clat percentiles (usec): | 1.00th=[63177], 5.00th=[63177], 10.00th=[63177], 20.00th=[63177], | 30.00th=[63177], 40.00th=[63177], 50.00th=[63177], 60.00th=[76022], | 70.00th=[76022], 80.00th=[76022], 90.00th=[76022], 95.00th=[76022], | 99.00th=[76022], 99.50th=[76022], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 1861, max= 2000, per=41.65%, avg=1930.50, stdev=98.29, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2335KiB/s (2391kB/s)(10.0MiB/4385msec); 0 zone resets clat (msec): min=89, max=1801, avg=394.22, stdev=529.21 lat (msec): min=89, max=1801, avg=394.30, stdev=529.19 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 91], | 30.00th=[ 142], 40.00th=[ 176], 50.00th=[ 199], 60.00th=[ 218], | 70.00th=[ 230], 80.00th=[ 251], 90.00th=[ 751], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 4000, max= 6107, per=72.96%, avg=4734.33, stdev=1189.73, samples=3 iops : min= 3, max= 5, avg= 4.00, stdev= 1.00, samples=3 lat (msec) : 100=33.33%, 250=41.67%, 500=8.33%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=12.45%, ctx=208, 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=148164: Fri Feb 27 02:55:37 2026 read: IOPS=1, BW=1449KiB/s (1484kB/s)(6144KiB/4239msec) clat (msec): min=51, max=565, avg=205.34, stdev=182.21 lat (msec): min=51, max=565, avg=205.34, stdev=182.21 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 52], 10.00th=[ 52], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 153], | 70.00th=[ 188], 80.00th=[ 188], 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= 2035, max= 4000, per=54.64%, avg=2532.75, stdev=978.19, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1449KiB/s (1484kB/s)(6144KiB/4239msec); 0 zone resets clat (msec): min=55, max=1884, avg=480.29, stdev=692.75 lat (msec): min=55, max=1884, avg=480.43, stdev=692.88 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 56], 10.00th=[ 56], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 266], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 2000, max= 3716, per=37.75%, avg=2449.75, stdev=844.41, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=7.43%, ctx=96, 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=148165: Fri Feb 27 02:55:37 2026 read: IOPS=1, BW=1392KiB/s (1426kB/s)(5120KiB/3677msec) clat (msec): min=63, max=241, avg=131.60, stdev=79.76 lat (msec): min=63, max=241, avg=131.60, stdev=79.76 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 64], | 30.00th=[ 68], 40.00th=[ 68], 50.00th=[ 96], 60.00th=[ 96], | 70.00th=[ 190], 80.00th=[ 190], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 2048, max= 6144, per=88.37%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1949KiB/s (1996kB/s)(7168KiB/3677msec); 0 zone resets clat (msec): min=110, max=1755, avg=426.91, stdev=592.33 lat (msec): min=110, max=1755, avg=427.00, stdev=592.34 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 157], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 182], 60.00th=[ 215], | 70.00th=[ 215], 80.00th=[ 393], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 1841, max= 6107, per=61.87%, avg=4014.67, stdev=2134.16, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 lat (msec) : 100=25.00%, 250=58.33%, 500=8.33%, 2000=8.33% cpu : usr=0.05%, sys=11.78%, ctx=147, 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=4636KiB/s (4747kB/s), 467KiB/s-1622KiB/s (478kB/s-1661kB/s), io=20.0MiB (20.0MB), run=3677-4418msec WRITE: bw=6490KiB/s (6646kB/s), 1159KiB/s-2335KiB/s (1187kB/s-2391kB/s), io=28.0MiB (29.4MB), run=3677-4418msec 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=148172: Fri Feb 27 02:55:46 2026 read: IOPS=2, BW=9116KiB/s (9335kB/s)(12.0MiB/1348msec) clat (msec): min=390, max=481, avg=440.21, stdev=46.46 lat (msec): min=390, max=481, avg=440.21, stdev=46.46 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7301, max= 8192, per=63.74%, avg=7746.50, stdev=630.03, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=40.39%, ctx=1213, 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=148174: Fri Feb 27 02:55:46 2026 read: IOPS=0, BW=3223KiB/s (3300kB/s)(4096KiB/1271msec) clat (nsec): min=499005k, max=499005k, avg=499005241.00, stdev= 0.00 lat (nsec): min=499008k, max=499008k, avg=499007780.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 5657, max= 5657, per=46.54%, avg=5657.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=6445KiB/s (6600kB/s)(8192KiB/1271msec); 0 zone resets clat (msec): min=274, max=413, avg=344.11, stdev=98.23 lat (msec): min=275, max=414, avg=344.55, stdev=98.25 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 8192, max= 8192, per=53.53%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.08%, sys=29.45%, ctx=349, 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=148176: Fri Feb 27 02:55:46 2026 write: IOPS=1, BW=5739KiB/s (5877kB/s)(12.0MiB/2141msec); 0 zone resets clat (msec): min=78, max=1648, avg=687.75, stdev=841.90 lat (msec): min=78, max=1648, avg=688.08, stdev=842.00 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 79], | 30.00th=[ 79], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=11.68%, ctx=114, 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=148178: Fri Feb 27 02:55:46 2026 write: IOPS=1, BW=7618KiB/s (7801kB/s)(12.0MiB/1613msec); 0 zone resets clat (msec): min=200, max=1145, avg=523.33, stdev=539.09 lat (msec): min=200, max=1146, avg=523.79, stdev=539.07 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min=11994, max=11994, per=78.37%, avg=11994.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=12.78%, ctx=67, 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=11.9MiB/s (12.4MB/s), 3223KiB/s-9116KiB/s (3300kB/s-9335kB/s), io=16.0MiB (16.8MB), run=1271-1348msec WRITE: bw=14.9MiB/s (15.7MB/s), 5739KiB/s-7618KiB/s (5877kB/s-7801kB/s), io=32.0MiB (33.6MB), run=1271-2141msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148173: Fri Feb 27 02:55:46 2026 read: IOPS=1, BW=6440KiB/s (6595kB/s)(12.0MiB/1908msec) clat (msec): min=336, max=1084, avg=627.16, stdev=401.22 lat (msec): min=336, max=1084, avg=627.17, stdev=401.22 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8192, max= 8192, per=95.40%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=11.22%, ctx=68, 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=148175: Fri Feb 27 02:55:46 2026 read: IOPS=0, BW=2401KiB/s (2459kB/s)(4096KiB/1706msec) clat (nsec): min=1178.0M, max=1178.0M, avg=1178983971.00, stdev= 0.00 lat (nsec): min=1178.0M, max=1178.0M, avg=1178986206.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8192, max= 8192, per=95.40%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4802KiB/s (4917kB/s)(8192KiB/1706msec); 0 zone resets clat (msec): min=195, max=249, avg=222.45, stdev=38.67 lat (msec): min=195, max=250, avg=222.80, stdev=38.71 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 197], 60.00th=[ 251], | 70.00th=[ 251], 80.00th=[ 251], 90.00th=[ 251], 95.00th=[ 251], | 99.00th=[ 251], 99.50th=[ 251], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 8192, max= 8192, per=45.60%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=16.25%, ctx=75, 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=148177: Fri Feb 27 02:55:46 2026 write: IOPS=1, BW=6737KiB/s (6899kB/s)(12.0MiB/1824msec); 0 zone resets clat (msec): min=349, max=963, avg=600.23, stdev=322.48 lat (msec): min=349, max=964, avg=600.67, stdev=322.52 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8192, max= 8192, per=45.60%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=12.45%, ctx=68, 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=148179: Fri Feb 27 02:55:46 2026 write: IOPS=1, BW=7042KiB/s (7211kB/s)(12.0MiB/1745msec); 0 zone resets clat (msec): min=233, max=962, avg=556.90, stdev=371.44 lat (msec): min=233, max=962, avg=557.42, stdev=371.37 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 477], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7327, max= 8192, per=43.19%, avg=7759.50, stdev=611.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=14.16%, ctx=112, 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=8587KiB/s (8793kB/s), 2401KiB/s-6440KiB/s (2459kB/s-6595kB/s), io=16.0MiB (16.8MB), run=1706-1908msec WRITE: bw=17.5MiB/s (18.4MB/s), 4802KiB/s-7042KiB/s (4917kB/s-7211kB/s), io=32.0MiB (33.6MB), run=1706-1824msec