== sanity test 398b: DIO and buffer IO race ============== 02:23:32 (1788848612) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.51091 s, 5.9 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=146527: Tue Sep 8 02:26:14 2026 read: IOPS=11, BW=44.7KiB/s (45.8kB/s)(5992KiB/133961msec) clat (usec): min=33, max=721573, avg=44148.12, stdev=37030.79 lat (usec): min=33, max=721574, avg=44152.39, stdev=37032.09 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 59], 10.00th=[ 204], 20.00th=[ 20317], | 30.00th=[ 26346], 40.00th=[ 31589], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 53740], 80.00th=[ 66323], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[162530], 99.50th=[187696], 99.90th=[295699], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 101, per=25.74%, avg=45.05, stdev=18.45, samples=259 iops : min= 1, max= 25, avg=10.60, stdev= 4.66, samples=259 write: IOPS=11, BW=46.0KiB/s (48.1kB/s)(6296KiB/133961msec); 0 zone resets clat (usec): min=949, max=454800, avg=42999.64, stdev=45814.82 lat (usec): min=949, max=454802, avg=43002.81, stdev=45814.58 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1401], 20.00th=[ 3556], | 30.00th=[ 7701], 40.00th=[ 18482], 50.00th=[ 32375], 60.00th=[ 44303], | 70.00th=[ 58459], 80.00th=[ 74974], 90.00th=[100140], 95.00th=[124257], | 99.00th=[187696], 99.50th=[248513], 99.90th=[392168], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 7, max= 127, per=25.46%, avg=46.60, stdev=21.32, samples=263 iops : min= 1, max= 31, avg=10.98, stdev= 5.37, samples=263 lat (usec) : 50=0.59%, 100=3.78%, 250=0.59%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.23% lat (msec) : 2=6.61%, 4=4.30%, 10=6.22%, 20=8.01%, 50=34.96% lat (msec) : 100=26.92%, 250=7.36%, 500=0.26%, 750=0.03% cpu : usr=0.06%, sys=4.63%, ctx=6382, 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=146528: Tue Sep 8 02:26:14 2026 read: IOPS=10, BW=43.4KiB/s (44.5kB/s)(5940KiB/136781msec) clat (usec): min=31, max=981611, avg=44677.63, stdev=41827.24 lat (usec): min=31, max=981612, avg=44680.62, stdev=41826.56 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 115], 20.00th=[ 19530], | 30.00th=[ 26084], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 55313], 80.00th=[ 66323], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[173016], 99.50th=[193987], 99.90th=[375391], 99.95th=[985662], | 99.99th=[985662] bw ( KiB/s): min= 7, max= 104, per=24.98%, avg=43.72, stdev=19.30, samples=263 iops : min= 1, max= 26, avg=10.27, stdev= 4.86, samples=263 write: IOPS=11, BW=46.4KiB/s (47.5kB/s)(6348KiB/136781msec); 0 zone resets clat (usec): min=963, max=426839, avg=44256.69, stdev=46676.17 lat (usec): min=964, max=426840, avg=44263.90, stdev=46677.63 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1418], 20.00th=[ 4293], | 30.00th=[ 9503], 40.00th=[ 20841], 50.00th=[ 31851], 60.00th=[ 44303], | 70.00th=[ 58459], 80.00th=[ 76022], 90.00th=[105382], 95.00th=[128451], | 99.00th=[198181], 99.50th=[265290], 99.90th=[341836], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 7, max= 182, per=25.22%, avg=46.16, stdev=21.30, samples=266 iops : min= 1, max= 45, avg=10.87, stdev= 5.35, samples=266 lat (usec) : 50=0.62%, 100=4.07%, 250=0.29%, 500=0.20%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=6.90%, 4=3.19%, 10=6.05%, 20=8.95%, 50=34.28% lat (msec) : 100=26.40%, 250=8.43%, 500=0.39%, 1000=0.03% cpu : usr=0.07%, sys=4.50%, ctx=6378, 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=146529: Tue Sep 8 02:26:14 2026 read: IOPS=11, BW=44.6KiB/s (45.7kB/s)(6028KiB/135203msec) clat (usec): min=30, max=818788, avg=43227.23, stdev=37136.01 lat (usec): min=31, max=818789, avg=43229.43, stdev=37135.64 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 553], 20.00th=[ 20841], | 30.00th=[ 25822], 40.00th=[ 30802], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 52691], 80.00th=[ 63701], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[141558], 99.50th=[181404], 99.90th=[362808], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 7, max= 112, per=25.46%, avg=44.55, stdev=19.85, samples=263 iops : min= 1, max= 28, avg=10.47, stdev= 4.99, samples=263 write: IOPS=11, BW=46.3KiB/s (47.4kB/s)(6260KiB/135203msec); 0 zone resets clat (usec): min=948, max=1124.6k, avg=44649.96, stdev=53557.00 lat (usec): min=950, max=1124.6k, avg=44656.33, stdev=53556.51 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1352], | 20.00th=[ 3654], 30.00th=[ 8291], 40.00th=[ 20317], | 50.00th=[ 32113], 60.00th=[ 44827], 70.00th=[ 59507], | 80.00th=[ 74974], 90.00th=[ 102237], 95.00th=[ 127402], | 99.00th=[ 198181], 99.50th=[ 242222], 99.90th=[ 375391], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 125, per=25.13%, avg=46.00, stdev=19.52, samples=264 iops : min= 1, max= 31, avg=10.84, stdev= 4.94, samples=264 lat (usec) : 50=0.62%, 100=3.78%, 250=0.33%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=7.06%, 4=3.81%, 10=5.73%, 20=7.88%, 50=35.12% lat (msec) : 100=27.51%, 250=7.49%, 500=0.23%, 1000=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.40%, ctx=6301, 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=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=146530: Tue Sep 8 02:26:14 2026 read: IOPS=11, BW=44.8KiB/s (45.8kB/s)(6052KiB/135184msec) clat (usec): min=34, max=386762, avg=43513.25, stdev=34079.77 lat (usec): min=34, max=386764, avg=43517.11, stdev=34080.28 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 281], 20.00th=[ 19530], | 30.00th=[ 25822], 40.00th=[ 31851], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 64750], 90.00th=[ 85459], 95.00th=[100140], | 99.00th=[145753], 99.50th=[181404], 99.90th=[354419], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 95, per=25.66%, avg=44.90, stdev=18.49, samples=262 iops : min= 1, max= 23, avg=10.56, stdev= 4.66, samples=262 write: IOPS=11, BW=46.1KiB/s (47.2kB/s)(6236KiB/135184msec); 0 zone resets clat (usec): min=782, max=1197.4k, avg=44347.09, stdev=57057.85 lat (usec): min=784, max=1197.4k, avg=44353.41, stdev=57057.72 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1434], | 20.00th=[ 3884], 30.00th=[ 8717], 40.00th=[ 19268], | 50.00th=[ 31327], 60.00th=[ 42730], 70.00th=[ 57410], | 80.00th=[ 76022], 90.00th=[ 102237], 95.00th=[ 128451], | 99.00th=[ 198181], 99.50th=[ 283116], 99.90th=[ 817890], | 99.95th=[1199571], 99.99th=[1199571] bw ( KiB/s): min= 7, max= 102, per=25.32%, avg=46.34, stdev=18.52, samples=261 iops : min= 1, max= 25, avg=10.92, stdev= 4.66, samples=261 lat (usec) : 50=0.94%, 100=3.78%, 250=0.20%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.36% lat (msec) : 2=6.58%, 4=3.71%, 10=6.15%, 20=8.72%, 50=35.55% lat (msec) : 100=25.88%, 250=7.55%, 500=0.33%, 1000=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.51%, ctx=6302, 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=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=176KiB/s (180kB/s), 43.4KiB/s-44.8KiB/s (44.5kB/s-45.8kB/s), io=23.4MiB (24.6MB), run=133961-136781msec WRITE: bw=184KiB/s (188kB/s), 46.1KiB/s-46.0KiB/s (47.2kB/s-48.1kB/s), io=24.6MiB (25.7MB), run=133961-136781msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146522: Tue Sep 8 02:28:55 2026 read: IOPS=5, BW=20.2KiB/s (20.7kB/s)(5992KiB/296613msec) clat (msec): min=4, max=786, avg=40.70, stdev=42.83 lat (msec): min=4, max=786, avg=40.71, stdev=42.83 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 55], 90.00th=[ 89], 95.00th=[ 120], | 99.00th=[ 190], 99.50th=[ 228], 99.90th=[ 397], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 87, per=28.95%, avg=23.16, stdev=15.12, samples=498 iops : min= 1, max= 21, avg= 5.14, stdev= 3.82, samples=498 write: IOPS=5, BW=21.2KiB/s (21.7kB/s)(6296KiB/296613msec); 0 zone resets clat (msec): min=42, max=853, avg=149.41, stdev=66.94 lat (msec): min=42, max=853, avg=149.42, stdev=66.94 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 72], 10.00th=[ 83], 20.00th=[ 99], | 30.00th=[ 109], 40.00th=[ 121], 50.00th=[ 134], 60.00th=[ 148], | 70.00th=[ 167], 80.00th=[ 197], 90.00th=[ 241], 95.00th=[ 275], | 99.00th=[ 368], 99.50th=[ 397], 99.90th=[ 439], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 47, per=24.92%, avg=20.93, stdev= 8.96, samples=576 iops : min= 1, max= 11, avg= 4.59, stdev= 2.26, samples=576 lat (msec) : 10=1.73%, 20=14.00%, 50=22.27%, 100=18.65%, 250=39.32% lat (msec) : 500=3.97%, 1000=0.07% cpu : usr=0.04%, sys=1.11%, ctx=5312, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146523: Tue Sep 8 02:28:55 2026 read: IOPS=4, BW=19.9KiB/s (20.3kB/s)(5940KiB/298983msec) clat (msec): min=5, max=1061, avg=39.70, stdev=45.55 lat (msec): min=5, max=1061, avg=39.71, stdev=45.55 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 51], 90.00th=[ 80], 95.00th=[ 112], | 99.00th=[ 194], 99.50th=[ 239], 99.90th=[ 443], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 88, per=29.08%, avg=23.26, stdev=15.18, samples=491 iops : min= 1, max= 22, avg= 5.17, stdev= 3.82, samples=491 write: IOPS=5, BW=21.2KiB/s (21.7kB/s)(6348KiB/298983msec); 0 zone resets clat (msec): min=38, max=655, avg=150.95, stdev=69.99 lat (msec): min=38, max=655, avg=150.95, stdev=69.99 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 71], 10.00th=[ 83], 20.00th=[ 95], | 30.00th=[ 108], 40.00th=[ 120], 50.00th=[ 134], 60.00th=[ 150], | 70.00th=[ 174], 80.00th=[ 201], 90.00th=[ 241], 95.00th=[ 284], | 99.00th=[ 393], 99.50th=[ 426], 99.90th=[ 514], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 63, per=24.94%, avg=20.95, stdev= 9.14, samples=581 iops : min= 1, max= 15, avg= 4.59, stdev= 2.32, samples=581 lat (msec) : 10=1.73%, 20=13.22%, 50=23.93%, 100=18.59%, 250=37.86% lat (msec) : 500=4.59%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.08%, ctx=5335, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146524: Tue Sep 8 02:28:55 2026 read: IOPS=5, BW=20.2KiB/s (20.7kB/s)(6028KiB/297889msec) clat (msec): min=5, max=434, avg=42.08, stdev=39.63 lat (msec): min=5, max=434, avg=42.08, stdev=39.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 59], 90.00th=[ 88], 95.00th=[ 115], | 99.00th=[ 218], 99.50th=[ 257], 99.90th=[ 380], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 7, max= 102, per=27.66%, avg=22.13, stdev=15.05, samples=524 iops : min= 1, max= 25, avg= 4.89, stdev= 3.78, samples=524 write: IOPS=5, BW=21.0KiB/s (21.5kB/s)(6260KiB/297889msec); 0 zone resets clat (msec): min=38, max=1183, avg=149.52, stdev=74.47 lat (msec): min=38, max=1183, avg=149.52, stdev=74.47 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 74], 10.00th=[ 82], 20.00th=[ 96], | 30.00th=[ 109], 40.00th=[ 120], 50.00th=[ 133], 60.00th=[ 146], | 70.00th=[ 165], 80.00th=[ 192], 90.00th=[ 236], 95.00th=[ 288], | 99.00th=[ 397], 99.50th=[ 426], 99.90th=[ 852], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 48, per=24.81%, avg=20.84, stdev= 9.24, samples=576 iops : min= 1, max= 12, avg= 4.56, stdev= 2.34, samples=576 lat (msec) : 10=1.40%, 20=12.50%, 50=23.24%, 100=20.41%, 250=38.12% lat (msec) : 500=4.17%, 750=0.10%, 1000=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.13%, ctx=5342, 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=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=146526: Tue Sep 8 02:28:55 2026 read: IOPS=5, BW=20.4KiB/s (20.9kB/s)(6052KiB/296187msec) clat (msec): min=5, max=594, avg=40.12, stdev=39.32 lat (msec): min=5, max=594, avg=40.13, stdev=39.32 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 55], 90.00th=[ 85], 95.00th=[ 114], | 99.00th=[ 182], 99.50th=[ 226], 99.90th=[ 376], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 7, max= 118, per=29.29%, avg=23.43, stdev=15.92, samples=497 iops : min= 1, max= 29, avg= 5.20, stdev= 4.01, samples=497 write: IOPS=5, BW=21.1KiB/s (21.6kB/s)(6236KiB/296187msec); 0 zone resets clat (msec): min=44, max=1271, avg=150.75, stdev=74.26 lat (msec): min=44, max=1271, avg=150.75, stdev=74.26 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 72], 10.00th=[ 83], 20.00th=[ 95], | 30.00th=[ 109], 40.00th=[ 120], 50.00th=[ 133], 60.00th=[ 150], | 70.00th=[ 167], 80.00th=[ 194], 90.00th=[ 247], 95.00th=[ 288], | 99.00th=[ 393], 99.50th=[ 422], 99.90th=[ 514], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 47, per=24.72%, avg=20.76, stdev= 9.11, samples=575 iops : min= 1, max= 11, avg= 4.54, stdev= 2.31, samples=575 lat (msec) : 10=2.08%, 20=12.63%, 50=23.63%, 100=19.50%, 250=37.43% lat (msec) : 500=4.62%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.09%, ctx=5347, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=80.3KiB/s (82.2kB/s), 19.9KiB/s-20.4KiB/s (20.3kB/s-20.9kB/s), io=23.4MiB (24.6MB), run=296187-298983msec WRITE: bw=84.1KiB/s (86.1kB/s), 21.0KiB/s-21.2KiB/s (21.5kB/s-21.7kB/s), io=24.6MiB (25.7MB), run=296187-298983msec 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=146587: Tue Sep 8 02:29:36 2026 read: IOPS=13, BW=214KiB/s (219kB/s)(5920KiB/27665msec) clat (usec): min=39, max=203226, avg=40891.40, stdev=35025.95 lat (usec): min=40, max=203228, avg=40892.44, stdev=35025.94 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 57], 10.00th=[ 66], 20.00th=[ 127], | 30.00th=[ 23462], 40.00th=[ 29230], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 51119], 80.00th=[ 62653], 90.00th=[ 80217], 95.00th=[105382], | 99.00th=[175113], 99.50th=[189793], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 62, max= 382, per=26.14%, avg=210.94, stdev=73.59, samples=54 iops : min= 3, max= 23, avg=12.44, stdev= 4.66, samples=54 write: IOPS=14, BW=230KiB/s (236kB/s)(6368KiB/27665msec); 0 zone resets clat (usec): min=1415, max=226817, avg=31065.96, stdev=35146.26 lat (usec): min=1416, max=226819, avg=31067.93, stdev=35146.28 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1795], 10.00th=[ 2573], 20.00th=[ 4817], | 30.00th=[ 6915], 40.00th=[ 10421], 50.00th=[ 16057], 60.00th=[ 24511], | 70.00th=[ 39060], 80.00th=[ 54789], 90.00th=[ 79168], 95.00th=[100140], | 99.00th=[149947], 99.50th=[196084], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 30, max= 480, per=26.89%, avg=228.54, stdev=94.83, samples=54 iops : min= 1, max= 30, avg=13.54, stdev= 6.00, samples=54 lat (usec) : 50=0.91%, 100=8.07%, 250=0.91%, 500=0.26%, 1000=0.13% lat (msec) : 2=4.04%, 4=4.56%, 10=11.85%, 20=10.42%, 50=31.64% lat (msec) : 100=22.01%, 250=5.21% cpu : usr=0.07%, sys=5.53%, ctx=1401, 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=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=146588: Tue Sep 8 02:29:36 2026 read: IOPS=12, BW=194KiB/s (198kB/s)(5744KiB/29647msec) clat (usec): min=33, max=238147, avg=42715.60, stdev=34275.50 lat (usec): min=34, max=238148, avg=42716.98, stdev=34275.47 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 20055], | 30.00th=[ 24773], 40.00th=[ 32113], 50.00th=[ 38536], 60.00th=[ 44827], | 70.00th=[ 52691], 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[179307], 99.50th=[198181], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 351, per=24.05%, avg=194.10, stdev=78.37, samples=58 iops : min= 1, max= 21, avg=11.38, stdev= 4.92, samples=58 write: IOPS=13, BW=221KiB/s (226kB/s)(6544KiB/29647msec); 0 zone resets clat (usec): min=1301, max=435021, avg=34402.23, stdev=43698.28 lat (usec): min=1303, max=435023, avg=34406.80, stdev=43697.73 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1713], 10.00th=[ 2212], 20.00th=[ 5080], | 30.00th=[ 7701], 40.00th=[ 11600], 50.00th=[ 20841], 60.00th=[ 29754], | 70.00th=[ 40109], 80.00th=[ 53740], 90.00th=[ 82314], 95.00th=[114820], | 99.00th=[206570], 99.50th=[233833], 99.90th=[434111], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 63, max= 535, per=25.82%, avg=219.43, stdev=94.56, samples=58 iops : min= 3, max= 33, avg=12.98, stdev= 6.00, samples=58 lat (usec) : 50=0.52%, 100=5.73%, 250=0.65%, 500=0.13%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=4.56%, 4=3.91%, 10=11.33%, 20=8.72%, 50=36.72% lat (msec) : 100=21.61%, 250=5.60%, 500=0.13% cpu : usr=0.06%, sys=5.59%, ctx=1438, 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=146589: Tue Sep 8 02:29:36 2026 read: IOPS=13, BW=214KiB/s (219kB/s)(6256KiB/29282msec) clat (usec): min=34, max=242888, avg=41768.67, stdev=33144.03 lat (usec): min=34, max=242889, avg=41769.85, stdev=33144.02 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 16581], | 30.00th=[ 24511], 40.00th=[ 30802], 50.00th=[ 37487], 60.00th=[ 44827], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 82314], 95.00th=[ 98042], | 99.00th=[129500], 99.50th=[214959], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 31, max= 409, per=26.53%, avg=214.12, stdev=71.35, samples=57 iops : min= 1, max= 25, avg=12.65, stdev= 4.52, samples=57 write: IOPS=12, BW=206KiB/s (211kB/s)(6032KiB/29282msec); 0 zone resets clat (usec): min=1393, max=237084, avg=33720.16, stdev=34254.18 lat (usec): min=1396, max=237086, avg=33723.14, stdev=34253.36 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1745], 10.00th=[ 2343], 20.00th=[ 5604], | 30.00th=[ 8455], 40.00th=[ 12649], 50.00th=[ 21627], 60.00th=[ 30540], | 70.00th=[ 42206], 80.00th=[ 61604], 90.00th=[ 88605], 95.00th=[106431], | 99.00th=[122160], 99.50th=[143655], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 63, max= 384, per=24.05%, avg=204.44, stdev=79.90, samples=57 iops : min= 3, max= 24, avg=12.02, stdev= 5.06, samples=57 lat (usec) : 50=1.17%, 100=7.55%, 250=0.26%, 500=0.26% lat (msec) : 2=4.17%, 4=3.26%, 10=9.90%, 20=9.51%, 50=33.33% lat (msec) : 100=25.65%, 250=4.95% cpu : usr=0.07%, sys=5.30%, ctx=1440, 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=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=146590: Tue Sep 8 02:29:36 2026 read: IOPS=13, BW=211KiB/s (216kB/s)(6032KiB/28549msec) clat (usec): min=32, max=208546, avg=39766.13, stdev=34741.92 lat (usec): min=33, max=208548, avg=39770.32, stdev=34742.12 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 59], 10.00th=[ 63], 20.00th=[ 102], | 30.00th=[ 23200], 40.00th=[ 30278], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 62653], 90.00th=[ 85459], 95.00th=[101188], | 99.00th=[160433], 99.50th=[189793], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 63, max= 447, per=25.93%, avg=209.24, stdev=83.02, samples=55 iops : min= 3, max= 27, avg=12.33, stdev= 5.26, samples=55 write: IOPS=13, BW=219KiB/s (224kB/s)(6256KiB/28549msec); 0 zone resets clat (usec): min=1408, max=387536, avg=34499.63, stdev=41437.41 lat (usec): min=1410, max=387538, avg=34502.35, stdev=41436.90 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1762], 10.00th=[ 2343], 20.00th=[ 4621], | 30.00th=[ 7570], 40.00th=[ 11994], 50.00th=[ 19792], 60.00th=[ 29492], | 70.00th=[ 39060], 80.00th=[ 61080], 90.00th=[ 86508], 95.00th=[110625], | 99.00th=[177210], 99.50th=[254804], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 63, max= 574, per=25.64%, avg=217.93, stdev=93.06, samples=55 iops : min= 3, max= 35, avg=12.87, stdev= 5.89, samples=55 lat (usec) : 50=1.17%, 100=8.59%, 250=0.91%, 500=0.39%, 750=0.13% lat (msec) : 2=4.17%, 4=5.34%, 10=9.77%, 20=8.07%, 50=33.33% lat (msec) : 100=22.27%, 250=5.60%, 500=0.26% cpu : usr=0.06%, sys=5.38%, ctx=1411, 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=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=808KiB/s (827kB/s), 194KiB/s-214KiB/s (198kB/s-219kB/s), io=23.4MiB (24.5MB), run=27665-29647msec WRITE: bw=850KiB/s (870kB/s), 206KiB/s-230KiB/s (211kB/s-236kB/s), io=24.6MiB (25.8MB), run=27665-29647msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146592: Tue Sep 8 02:30:19 2026 read: IOPS=5, BW=82.7KiB/s (84.7kB/s)(5920KiB/71544msec) clat (msec): min=7, max=352, avg=41.28, stdev=47.18 lat (msec): min=7, max=352, avg=41.28, stdev=47.18 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 50], 90.00th=[ 93], 95.00th=[ 140], | 99.00th=[ 266], 99.50th=[ 326], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 316, per=27.87%, avg=91.98, stdev=58.24, samples=126 iops : min= 1, max= 19, avg= 4.96, stdev= 3.69, samples=126 write: IOPS=5, BW=89.0KiB/s (91.1kB/s)(6368KiB/71544msec); 0 zone resets clat (msec): min=48, max=471, avg=141.06, stdev=63.18 lat (msec): min=48, max=471, avg=141.07, stdev=63.18 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 68], 10.00th=[ 78], 20.00th=[ 94], | 30.00th=[ 106], 40.00th=[ 115], 50.00th=[ 129], 60.00th=[ 140], | 70.00th=[ 155], 80.00th=[ 176], 90.00th=[ 226], 95.00th=[ 279], | 99.00th=[ 368], 99.50th=[ 405], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 22, max= 187, per=25.83%, avg=89.63, stdev=37.64, samples=139 iops : min= 1, max= 11, avg= 4.81, stdev= 2.39, samples=139 lat (msec) : 10=1.30%, 20=16.02%, 50=21.48%, 100=19.40%, 250=38.15% lat (msec) : 500=3.65% cpu : usr=0.04%, sys=1.14%, ctx=1326, 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=146593: Tue Sep 8 02:30:19 2026 read: IOPS=4, BW=79.3KiB/s (81.2kB/s)(5744KiB/72434msec) clat (msec): min=8, max=300, avg=36.71, stdev=36.86 lat (msec): min=8, max=300, avg=36.73, stdev=36.86 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 69], 95.00th=[ 114], | 99.00th=[ 203], 99.50th=[ 247], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 22, max= 351, per=28.60%, avg=94.38, stdev=62.47, samples=120 iops : min= 1, max= 21, avg= 5.11, stdev= 3.97, samples=120 write: IOPS=5, BW=90.3KiB/s (92.5kB/s)(6544KiB/72434msec); 0 zone resets clat (msec): min=39, max=471, avg=144.56, stdev=70.71 lat (msec): min=39, max=471, avg=144.56, stdev=70.71 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 89], | 30.00th=[ 102], 40.00th=[ 115], 50.00th=[ 129], 60.00th=[ 142], | 70.00th=[ 163], 80.00th=[ 188], 90.00th=[ 245], 95.00th=[ 288], | 99.00th=[ 393], 99.50th=[ 430], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 22, max= 252, per=26.12%, avg=90.63, stdev=42.77, samples=142 iops : min= 1, max= 15, avg= 4.87, stdev= 2.71, samples=142 lat (msec) : 10=0.52%, 20=16.93%, 50=21.88%, 100=20.44%, 250=35.68% lat (msec) : 500=4.56% cpu : usr=0.03%, sys=1.19%, ctx=1283, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146594: Tue Sep 8 02:30:19 2026 read: IOPS=5, BW=89.8KiB/s (91.0kB/s)(6256KiB/69662msec) clat (msec): min=6, max=336, avg=37.36, stdev=36.00 lat (msec): min=6, max=336, avg=37.37, stdev=36.00 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 49], 90.00th=[ 78], 95.00th=[ 112], | 99.00th=[ 192], 99.50th=[ 213], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 30, max= 285, per=30.67%, avg=101.20, stdev=62.98, samples=122 iops : min= 1, max= 17, avg= 5.53, stdev= 3.97, samples=122 write: IOPS=5, BW=86.6KiB/s (88.7kB/s)(6032KiB/69662msec); 0 zone resets clat (msec): min=39, max=410, avg=145.74, stdev=63.18 lat (msec): min=39, max=410, avg=145.75, stdev=63.18 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 73], 10.00th=[ 82], 20.00th=[ 99], | 30.00th=[ 109], 40.00th=[ 121], 50.00th=[ 131], 60.00th=[ 148], | 70.00th=[ 159], 80.00th=[ 180], 90.00th=[ 232], 95.00th=[ 288], | 99.00th=[ 355], 99.50th=[ 401], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 30, max= 192, per=24.90%, avg=86.39, stdev=34.77, samples=136 iops : min= 1, max= 12, avg= 4.60, stdev= 2.23, samples=136 lat (msec) : 10=1.30%, 20=15.36%, 50=24.61%, 100=17.97%, 250=36.46% lat (msec) : 500=4.30% cpu : usr=0.04%, sys=1.14%, ctx=1329, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146595: Tue Sep 8 02:30:19 2026 read: IOPS=5, BW=85.4KiB/s (87.4kB/s)(6032KiB/70644msec) clat (msec): min=5, max=278, avg=38.27, stdev=41.92 lat (msec): min=5, max=278, avg=38.27, stdev=41.92 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 86], 95.00th=[ 138], | 99.00th=[ 222], 99.50th=[ 264], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 30, max= 320, per=29.11%, avg=96.07, stdev=61.88, samples=122 iops : min= 1, max= 20, avg= 5.20, stdev= 3.94, samples=122 write: IOPS=5, BW=88.6KiB/s (90.7kB/s)(6256KiB/70644msec); 0 zone resets clat (msec): min=48, max=391, avg=143.56, stdev=60.67 lat (msec): min=48, max=391, avg=143.56, stdev=60.67 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 73], 10.00th=[ 83], 20.00th=[ 95], | 30.00th=[ 107], 40.00th=[ 115], 50.00th=[ 130], 60.00th=[ 142], | 70.00th=[ 159], 80.00th=[ 186], 90.00th=[ 230], 95.00th=[ 266], | 99.00th=[ 338], 99.50th=[ 380], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 31, max= 160, per=26.28%, avg=91.20, stdev=36.09, samples=134 iops : min= 1, max= 10, avg= 4.91, stdev= 2.30, samples=134 lat (msec) : 10=2.21%, 20=16.28%, 50=21.88%, 100=17.58%, 250=38.41% lat (msec) : 500=3.65% cpu : usr=0.03%, sys=1.09%, ctx=1222, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=331KiB/s (339kB/s), 79.3KiB/s-89.8KiB/s (81.2kB/s-91.0kB/s), io=23.4MiB (24.5MB), run=69662-72434msec WRITE: bw=348KiB/s (356kB/s), 86.6KiB/s-90.3KiB/s (88.7kB/s-92.5kB/s), io=24.6MiB (25.8MB), run=69662-72434msec 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=146618: Tue Sep 8 02:30:36 2026 read: IOPS=1, BW=1180KiB/s (1208kB/s)(7168KiB/6074msec) clat (usec): min=474, max=768662, avg=294398.78, stdev=231863.49 lat (usec): min=475, max=768663, avg=294400.08, stdev=231863.31 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[225444], | 30.00th=[229639], 40.00th=[229639], 50.00th=[248513], 60.00th=[278922], | 70.00th=[278922], 80.00th=[308282], 90.00th=[767558], 95.00th=[767558], | 99.00th=[767558], 99.50th=[767558], 99.90th=[767558], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 2031, max= 4071, per=85.07%, avg=2760.50, stdev=961.69, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=0, BW=843KiB/s (863kB/s)(5120KiB/6074msec); 0 zone resets clat (msec): min=213, max=2184, avg=793.19, stdev=808.53 lat (msec): min=213, max=2184, avg=793.27, stdev=808.55 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 1996, max= 2039, per=44.49%, avg=2021.25, stdev=18.73, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=33.33%, 500=25.00%, 750=8.33%, 1000=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=7.74%, ctx=175, 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=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=146619: Tue Sep 8 02:30:36 2026 read: IOPS=0, BW=343KiB/s (351kB/s)(2048KiB/5970msec) clat (msec): min=317, max=2458, avg=1387.98, stdev=1514.02 lat (msec): min=317, max=2458, avg=1387.99, stdev=1514.02 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 2467], | 70.00th=[ 2467], 80.00th=[ 2467], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 2035, max= 2039, per=62.77%, avg=2037.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1715KiB/s (1756kB/s)(10.0MiB/5970msec); 0 zone resets clat (msec): min=185, max=780, avg=313.57, stdev=182.17 lat (msec): min=185, max=780, avg=313.88, stdev=182.04 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 190], 40.00th=[ 224], 50.00th=[ 234], 60.00th=[ 271], | 70.00th=[ 275], 80.00th=[ 363], 90.00th=[ 426], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 2031, max= 4096, per=71.29%, avg=3238.60, stdev=1101.17, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.34, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=10.29%, ctx=391, 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=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=146621: Tue Sep 8 02:30:36 2026 read: IOPS=1, BW=1372KiB/s (1405kB/s)(6144KiB/4477msec) clat (msec): min=140, max=544, avg=265.55, stdev=152.11 lat (msec): min=140, max=544, avg=265.55, stdev=152.11 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 275], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2031, max= 4087, per=78.49%, avg=2547.00, stdev=1026.67, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1372KiB/s (1405kB/s)(6144KiB/4477msec); 0 zone resets clat (msec): min=186, max=747, avg=457.69, stdev=253.17 lat (msec): min=186, max=747, avg=457.77, stdev=253.17 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 584], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 2031, max= 3061, per=49.39%, avg=2243.60, stdev=456.99, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.02%, sys=12.51%, ctx=283, 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=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=146623: Tue Sep 8 02:30:36 2026 read: IOPS=0, BW=811KiB/s (831kB/s)(5120KiB/6311msec) clat (usec): min=489, max=626318, avg=210260.09, stdev=258482.62 lat (usec): min=490, max=626319, avg=210261.38, stdev=258482.53 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 490], | 30.00th=[ 717], 40.00th=[ 717], 50.00th=[156238], 60.00th=[156238], | 70.00th=[267387], 80.00th=[267387], 90.00th=[624952], 95.00th=[624952], | 99.00th=[624952], 99.50th=[624952], 99.90th=[624952], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 2039, max= 5988, per=100.00%, avg=4013.50, stdev=2792.36, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1136KiB/s (1163kB/s)(7168KiB/6311msec); 0 zone resets clat (msec): min=242, max=2286, avg=712.49, stdev=710.64 lat (msec): min=243, max=2286, avg=712.62, stdev=710.62 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 257], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 510], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 642], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 1721, max= 2048, per=43.77%, avg=1988.50, stdev=131.26, samples=6 iops : min= 1, max= 2, avg= 1.50, stdev= 0.55, samples=6 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=16.67%, 500=25.00%, 750=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.46%, ctx=169, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3245KiB/s (3323kB/s), 343KiB/s-1372KiB/s (351kB/s-1405kB/s), io=20.0MiB (20.0MB), run=4477-6311msec WRITE: bw=4543KiB/s (4652kB/s), 843KiB/s-1715KiB/s (863kB/s-1756kB/s), io=28.0MiB (29.4MB), run=4477-6311msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146616: Tue Sep 8 02:30:36 2026 read: IOPS=1, BW=1127KiB/s (1154kB/s)(7168KiB/6361msec) clat (msec): min=81, max=377, avg=216.32, stdev=117.42 lat (msec): min=81, max=377, avg=216.32, stdev=117.42 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 89], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 218], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 326], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 1563, max= 4063, per=77.66%, avg=2343.00, stdev=982.55, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=805KiB/s (824kB/s)(5120KiB/6361msec); 0 zone resets clat (msec): min=214, max=2476, avg=915.56, stdev=910.81 lat (msec): min=214, max=2476, avg=915.63, stdev=910.82 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 1984, max= 2035, per=47.76%, avg=2017.25, stdev=23.19, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=2.39%, ctx=136, 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=146617: Tue Sep 8 02:30:36 2026 read: IOPS=0, BW=302KiB/s (309kB/s)(2048KiB/6787msec) clat (msec): min=507, max=2519, avg=1513.61, stdev=1422.70 lat (msec): min=507, max=2519, avg=1513.61, stdev=1422.70 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 2534], | 70.00th=[ 2534], 80.00th=[ 2534], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 1984, max= 2007, per=66.14%, avg=1995.50, stdev=16.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1509KiB/s (1545kB/s)(10.0MiB/6787msec); 0 zone resets clat (msec): min=166, max=679, avg=362.66, stdev=142.36 lat (msec): min=166, max=679, avg=362.88, stdev=142.40 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 207], | 30.00th=[ 296], 40.00th=[ 317], 50.00th=[ 347], 60.00th=[ 359], | 70.00th=[ 384], 80.00th=[ 401], 90.00th=[ 468], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1984, max= 4047, per=53.79%, avg=2272.25, stdev=717.38, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 250=16.67%, 500=58.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=3.42%, ctx=120, 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=146620: Tue Sep 8 02:30:36 2026 read: IOPS=1, BW=1032KiB/s (1056kB/s)(6144KiB/5956msec) clat (msec): min=80, max=1666, avg=434.16, stdev=609.20 lat (msec): min=80, max=1666, avg=434.16, stdev=609.20 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 264], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 1984, max= 4087, per=100.00%, avg=3378.00, stdev=1207.30, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1032KiB/s (1056kB/s)(6144KiB/5956msec); 0 zone resets clat (msec): min=146, max=1049, avg=518.10, stdev=341.97 lat (msec): min=146, max=1050, avg=518.17, stdev=341.96 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 567], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 2007, max= 4055, per=60.01%, avg=2535.00, stdev=1013.45, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=3.29%, ctx=89, 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=146622: Tue Sep 8 02:30:36 2026 read: IOPS=0, BW=812KiB/s (832kB/s)(5120KiB/6305msec) clat (msec): min=77, max=191, avg=136.39, stdev=47.07 lat (msec): min=77, max=191, avg=136.39, stdev=47.07 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 110], 40.00th=[ 110], 50.00th=[ 129], 60.00th=[ 129], | 70.00th=[ 176], 80.00th=[ 176], 90.00th=[ 192], 95.00th=[ 192], | 99.00th=[ 192], 99.50th=[ 192], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 2048, max= 6095, per=100.00%, avg=4071.50, stdev=2861.66, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1137KiB/s (1164kB/s)(7168KiB/6305msec); 0 zone resets clat (msec): min=302, max=2342, avg=796.32, stdev=721.17 lat (msec): min=302, max=2342, avg=796.40, stdev=721.17 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 334], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 527], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 1020], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 1501, max= 4039, per=64.27%, avg=2714.80, stdev=1219.15, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.03%, sys=2.46%, ctx=76, 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=3018KiB/s (3090kB/s), 302KiB/s-1127KiB/s (309kB/s-1154kB/s), io=20.0MiB (20.0MB), run=5956-6787msec WRITE: bw=4225KiB/s (4326kB/s), 805KiB/s-1509KiB/s (824kB/s-1545kB/s), io=28.0MiB (29.4MB), run=5956-6787msec 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=146631: Tue Sep 8 02:30:51 2026 read: IOPS=1, BW=4443KiB/s (4549kB/s)(12.0MiB/2766msec) clat (msec): min=761, max=1018, avg=878.90, stdev=129.91 lat (msec): min=761, max=1018, avg=878.90, stdev=129.91 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 8078, max= 8143, per=100.00%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=11.86%, ctx=385, 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=146632: Tue Sep 8 02:30:51 2026 read: IOPS=0, BW=1100KiB/s (1127kB/s)(4096KiB/3722msec) clat (nsec): min=777201k, max=777201k, avg=777201407.00, stdev= 0.00 lat (nsec): min=777204k, max=777204k, avg=777203807.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2201KiB/s (2254kB/s)(8192KiB/3722msec); 0 zone resets clat (msec): min=796, max=1888, avg=1342.72, stdev=771.83 lat (msec): min=797, max=1889, avg=1343.71, stdev=771.77 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 1888], | 70.00th=[ 1888], 80.00th=[ 1888], 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= 8143, max= 8143, per=92.50%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.43%, ctx=126, 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=146633: Tue Sep 8 02:30:51 2026 write: IOPS=0, BW=3986KiB/s (4081kB/s)(12.0MiB/3083msec); 0 zone resets clat (msec): min=407, max=1568, avg=1005.57, stdev=581.23 lat (msec): min=408, max=1569, avg=1005.86, stdev=581.24 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 70.00th=[ 1569], 80.00th=[ 1569], 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= 7968, max= 8143, per=91.51%, avg=8055.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.16%, sys=6.65%, ctx=62, 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=146635: Tue Sep 8 02:30:51 2026 write: IOPS=1, BW=4699KiB/s (4812kB/s)(12.0MiB/2615msec); 0 zone resets clat (msec): min=572, max=1134, avg=851.19, stdev=281.02 lat (msec): min=573, max=1135, avg=851.51, stdev=281.03 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7876, max= 8192, per=91.26%, avg=8034.00, stdev=223.45, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.24%, ctx=63, 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=4402KiB/s (4508kB/s), 1100KiB/s-4443KiB/s (1127kB/s-4549kB/s), io=16.0MiB (16.8MB), run=2766-3722msec WRITE: bw=8804KiB/s (9015kB/s), 2201KiB/s-4699KiB/s (2254kB/s-4812kB/s), io=32.0MiB (33.6MB), run=2615-3722msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146634: Tue Sep 8 02:30:52 2026 read: IOPS=0, BW=3791KiB/s (3882kB/s)(12.0MiB/3241msec) clat (msec): min=182, max=1768, avg=1066.56, stdev=808.31 lat (msec): min=182, max=1768, avg=1066.56, stdev=808.31 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 184], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.12%, ctx=32, 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=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=146636: Tue Sep 8 02:30:52 2026 read: IOPS=0, BW=1352KiB/s (1385kB/s)(4096KiB/3029msec) clat (nsec): min=396563k, max=396563k, avg=396562613.00, stdev= 0.00 lat (nsec): min=396565k, max=396565k, avg=396564842.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7515, max= 7515, per=100.00%, avg=7515.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2705KiB/s (2769kB/s)(8192KiB/3029msec); 0 zone resets clat (msec): min=803, max=1768, avg=1285.56, stdev=682.39 lat (msec): min=803, max=1768, avg=1285.81, stdev=682.47 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 1770], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8143, max= 8143, per=97.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.27%, ctx=52, 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=146637: Tue Sep 8 02:30:52 2026 write: IOPS=0, BW=3148KiB/s (3224kB/s)(12.0MiB/3903msec); 0 zone resets clat (msec): min=316, max=2036, avg=1276.94, stdev=877.45 lat (msec): min=316, max=2039, avg=1278.05, stdev=878.51 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 1485], 50.00th=[ 1485], 60.00th=[ 1485], | 70.00th=[ 2039], 80.00th=[ 2039], 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= 8126, max= 8175, per=97.09%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.23%, ctx=44, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=146638: Tue Sep 8 02:30:52 2026 write: IOPS=1, BW=6244KiB/s (6394kB/s)(12.0MiB/1968msec); 0 zone resets clat (msec): min=347, max=1054, avg=636.24, stdev=371.16 lat (msec): min=347, max=1055, avg=636.61, stdev=371.17 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 5649, max= 8126, per=82.04%, avg=6887.50, stdev=1751.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.39%, ctx=56, 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=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=5055KiB/s (5177kB/s), 1352KiB/s-3791KiB/s (1385kB/s-3882kB/s), io=16.0MiB (16.8MB), run=3029-3241msec WRITE: bw=8396KiB/s (8597kB/s), 2705KiB/s-6244KiB/s (2769kB/s-6394kB/s), io=32.0MiB (33.6MB), run=1968-3903msec