== sanity test 398b: DIO and buffer IO race ============== 11:19:33 (1786115973) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.88959 s, 17.4 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=151062: Fri Aug 7 11:20:35 2026 read: IOPS=28, BW=113KiB/s (116kB/s)(5992KiB/52849msec) clat (usec): min=28, max=837242, avg=18029.82, stdev=24059.60 lat (usec): min=29, max=837243, avg=18030.55, stdev=24059.62 clat percentiles (usec): | 1.00th=[ 80], 5.00th=[ 208], 10.00th=[ 7635], 20.00th=[ 9503], | 30.00th=[ 11338], 40.00th=[ 13304], 50.00th=[ 15401], 60.00th=[ 18220], | 70.00th=[ 20579], 80.00th=[ 24249], 90.00th=[ 29754], 95.00th=[ 35390], | 99.00th=[ 55313], 99.50th=[ 62129], 99.90th=[152044], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 215, per=25.35%, avg=113.33, stdev=33.81, samples=105 iops : min= 1, max= 53, avg=27.93, stdev= 8.49, samples=105 write: IOPS=29, BW=119KiB/s (122kB/s)(6296KiB/52849msec); 0 zone resets clat (usec): min=794, max=103746, avg=16347.53, stdev=13725.74 lat (usec): min=795, max=103748, avg=16348.59, stdev=13725.75 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 2278], 10.00th=[ 2999], 20.00th=[ 4424], | 30.00th=[ 6849], 40.00th=[ 10290], 50.00th=[ 13042], 60.00th=[ 16188], | 70.00th=[ 20579], 80.00th=[ 26608], 90.00th=[ 33162], 95.00th=[ 41157], | 99.00th=[ 64226], 99.50th=[ 82314], 99.90th=[101188], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 40, max= 229, per=25.68%, avg=120.18, stdev=30.54, samples=104 iops : min= 10, max= 57, avg=29.65, stdev= 7.72, samples=104 lat (usec) : 50=0.23%, 100=0.59%, 250=1.73%, 750=0.07%, 1000=0.29% lat (msec) : 2=1.73%, 4=7.19%, 10=19.40%, 20=36.82%, 50=29.95% lat (msec) : 100=1.82%, 250=0.16%, 1000=0.03% cpu : usr=0.13%, sys=26.36%, ctx=8918, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151063: Fri Aug 7 11:20:35 2026 read: IOPS=27, BW=112KiB/s (115kB/s)(5940KiB/53072msec) clat (usec): min=28, max=169524, avg=17931.63, stdev=11433.95 lat (usec): min=28, max=169524, avg=17932.40, stdev=11434.00 clat percentiles (usec): | 1.00th=[ 82], 5.00th=[ 6128], 10.00th=[ 7963], 20.00th=[ 9765], | 30.00th=[ 11338], 40.00th=[ 13435], 50.00th=[ 15664], 60.00th=[ 18220], | 70.00th=[ 21103], 80.00th=[ 25035], 90.00th=[ 31327], 95.00th=[ 36439], | 99.00th=[ 50594], 99.50th=[ 67634], 99.90th=[124257], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 7, max= 231, per=24.93%, avg=111.44, stdev=34.12, samples=105 iops : min= 1, max= 57, avg=27.46, stdev= 8.57, samples=105 write: IOPS=29, BW=120KiB/s (122kB/s)(6348KiB/53072msec); 0 zone resets clat (usec): min=776, max=838525, avg=16590.42, stdev=24951.96 lat (usec): min=776, max=838526, avg=16591.38, stdev=24952.00 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 2245], 10.00th=[ 2933], 20.00th=[ 4080], | 30.00th=[ 6325], 40.00th=[ 9634], 50.00th=[ 12780], 60.00th=[ 16319], | 70.00th=[ 19268], 80.00th=[ 25822], 90.00th=[ 34341], 95.00th=[ 42206], | 99.00th=[ 65799], 99.50th=[ 82314], 99.90th=[109577], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 207, per=25.34%, avg=118.59, stdev=32.93, samples=105 iops : min= 1, max= 51, avg=29.25, stdev= 8.31, samples=105 lat (usec) : 50=0.13%, 100=0.75%, 250=0.91%, 750=0.03%, 1000=0.39% lat (msec) : 2=1.73%, 4=8.07%, 10=19.43%, 20=37.70%, 50=28.81% lat (msec) : 100=1.86%, 250=0.16%, 1000=0.03% cpu : usr=0.14%, sys=26.41%, ctx=8870, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151064: Fri Aug 7 11:20:35 2026 read: IOPS=28, BW=113KiB/s (116kB/s)(6028KiB/53432msec) clat (usec): min=35, max=136907, avg=17725.19, stdev=11204.35 lat (usec): min=35, max=136907, avg=17725.98, stdev=11204.38 clat percentiles (usec): | 1.00th=[ 92], 5.00th=[ 6128], 10.00th=[ 7701], 20.00th=[ 9503], | 30.00th=[ 11469], 40.00th=[ 13304], 50.00th=[ 15270], 60.00th=[ 17957], | 70.00th=[ 20579], 80.00th=[ 24511], 90.00th=[ 31065], 95.00th=[ 36963], | 99.00th=[ 60031], 99.50th=[ 63177], 99.90th=[ 90702], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 31, max= 198, per=25.32%, avg=113.18, stdev=34.53, samples=105 iops : min= 7, max= 49, avg=27.90, stdev= 8.68, samples=105 write: IOPS=29, BW=117KiB/s (120kB/s)(6260KiB/53432msec); 0 zone resets clat (usec): min=681, max=844654, avg=17009.13, stdev=25445.63 lat (usec): min=682, max=844655, avg=17010.14, stdev=25445.65 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 2180], 10.00th=[ 2966], 20.00th=[ 4293], | 30.00th=[ 6849], 40.00th=[ 10028], 50.00th=[ 13042], 60.00th=[ 16450], | 70.00th=[ 20841], 80.00th=[ 25560], 90.00th=[ 33424], 95.00th=[ 42730], | 99.00th=[ 66323], 99.50th=[ 88605], 99.90th=[160433], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 7, max= 191, per=24.81%, avg=116.10, stdev=31.80, samples=106 iops : min= 1, max= 47, avg=28.62, stdev= 7.96, samples=106 lat (usec) : 50=0.10%, 100=0.68%, 250=0.94%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.46% lat (msec) : 2=1.60%, 4=7.13%, 10=20.51%, 20=36.59%, 50=29.62% lat (msec) : 100=2.02%, 250=0.13%, 1000=0.03% cpu : usr=0.12%, sys=26.04%, ctx=8905, 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=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=151065: Fri Aug 7 11:20:35 2026 read: IOPS=28, BW=113KiB/s (115kB/s)(6052KiB/53707msec) clat (usec): min=34, max=135601, avg=17745.17, stdev=11200.44 lat (usec): min=35, max=135602, avg=17746.13, stdev=11200.37 clat percentiles (usec): | 1.00th=[ 82], 5.00th=[ 5997], 10.00th=[ 7767], 20.00th=[ 9634], | 30.00th=[ 11076], 40.00th=[ 13042], 50.00th=[ 15533], 60.00th=[ 18220], | 70.00th=[ 21365], 80.00th=[ 25560], 90.00th=[ 30540], 95.00th=[ 35914], | 99.00th=[ 56886], 99.50th=[ 68682], 99.90th=[ 89654], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 47, max= 231, per=25.64%, avg=114.63, stdev=33.69, samples=105 iops : min= 11, max= 57, avg=28.25, stdev= 8.45, samples=105 write: IOPS=29, BW=116KiB/s (119kB/s)(6236KiB/53707msec); 0 zone resets clat (usec): min=733, max=877503, avg=17165.16, stdev=26128.61 lat (usec): min=733, max=877505, avg=17166.17, stdev=26128.64 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2343], 10.00th=[ 2966], 20.00th=[ 4015], | 30.00th=[ 6390], 40.00th=[ 10159], 50.00th=[ 13435], 60.00th=[ 16581], | 70.00th=[ 20841], 80.00th=[ 26608], 90.00th=[ 34866], 95.00th=[ 42730], | 99.00th=[ 67634], 99.50th=[ 85459], 99.90th=[125305], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 16, max= 239, per=25.00%, avg=117.02, stdev=33.88, samples=106 iops : min= 4, max= 59, avg=28.85, stdev= 8.53, samples=106 lat (usec) : 50=0.13%, 100=0.85%, 250=1.14%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.29% lat (msec) : 2=1.56%, 4=8.24%, 10=18.75%, 20=36.04%, 50=30.89% lat (msec) : 100=1.79%, 250=0.16%, 1000=0.03% cpu : usr=0.14%, sys=25.89%, ctx=8839, majf=0, minf=19 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=447KiB/s (458kB/s), 112KiB/s-113KiB/s (115kB/s-116kB/s), io=23.4MiB (24.6MB), run=52849-53707msec WRITE: bw=468KiB/s (479kB/s), 116KiB/s-120KiB/s (119kB/s-122kB/s), io=24.6MiB (25.7MB), run=52849-53707msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151057: Fri Aug 7 11:21:09 2026 read: IOPS=17, BW=68.3KiB/s (69.9kB/s)(5992KiB/87787msec) clat (msec): min=3, max=840, avg=16.36, stdev=26.07 lat (msec): min=3, max=840, avg=16.36, stdev=26.07 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 34], 95.00th=[ 43], | 99.00th=[ 75], 99.50th=[ 93], 99.90th=[ 171], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 192, per=25.20%, avg=68.54, stdev=37.10, samples=174 iops : min= 1, max= 48, avg=16.89, stdev= 9.39, samples=174 write: IOPS=17, BW=71.7KiB/s (73.4kB/s)(6296KiB/87787msec); 0 zone resets clat (msec): min=16, max=167, avg=40.03, stdev=18.05 lat (msec): min=16, max=167, avg=40.03, stdev=18.05 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 40], | 70.00th=[ 45], 80.00th=[ 52], 90.00th=[ 62], 95.00th=[ 71], | 99.00th=[ 102], 99.50th=[ 132], 99.90th=[ 157], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 16, max= 136, per=25.41%, avg=72.41, stdev=28.86, samples=173 iops : min= 4, max= 34, avg=17.86, stdev= 7.33, samples=173 lat (msec) : 4=0.49%, 10=22.56%, 20=15.07%, 50=49.35%, 100=11.75% lat (msec) : 250=0.75%, 1000=0.03% cpu : usr=0.10%, sys=8.35%, ctx=5803, 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=151058: Fri Aug 7 11:21:09 2026 read: IOPS=16, BW=67.9KiB/s (69.5kB/s)(5940KiB/87469msec) clat (msec): min=3, max=855, avg=15.77, stdev=26.17 lat (msec): min=3, max=855, avg=15.77, stdev=26.17 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 32], 95.00th=[ 46], | 99.00th=[ 77], 99.50th=[ 103], 99.90th=[ 146], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 184, per=25.07%, avg=68.20, stdev=37.06, samples=173 iops : min= 1, max= 46, avg=16.80, stdev= 9.35, samples=173 write: IOPS=18, BW=72.6KiB/s (74.3kB/s)(6348KiB/87469msec); 0 zone resets clat (msec): min=16, max=172, avg=40.19, stdev=18.69 lat (msec): min=16, max=172, avg=40.19, stdev=18.69 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 40], | 70.00th=[ 44], 80.00th=[ 53], 90.00th=[ 65], 95.00th=[ 74], | 99.00th=[ 107], 99.50th=[ 132], 99.90th=[ 169], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 24, max= 144, per=25.70%, avg=73.25, stdev=29.64, samples=172 iops : min= 6, max= 36, avg=18.06, stdev= 7.54, samples=172 lat (msec) : 4=0.52%, 10=23.11%, 20=15.89%, 50=47.17%, 100=12.37% lat (msec) : 250=0.91%, 1000=0.03% cpu : usr=0.10%, sys=8.38%, ctx=5955, 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=151059: Fri Aug 7 11:21:09 2026 read: IOPS=17, BW=68.5KiB/s (70.1kB/s)(6028KiB/87996msec) clat (msec): min=3, max=168, avg=15.81, stdev=14.32 lat (msec): min=3, max=168, avg=15.81, stdev=14.32 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 44], | 99.00th=[ 71], 99.50th=[ 83], 99.90th=[ 124], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 16, max= 176, per=25.40%, avg=69.08, stdev=35.23, samples=173 iops : min= 4, max= 44, avg=17.02, stdev= 8.90, samples=173 write: IOPS=17, BW=71.1KiB/s (72.8kB/s)(6260KiB/87996msec); 0 zone resets clat (msec): min=14, max=881, avg=40.83, stdev=27.97 lat (msec): min=14, max=881, avg=40.83, stdev=27.97 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 33], 50.00th=[ 36], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 53], 90.00th=[ 65], 95.00th=[ 79], | 99.00th=[ 105], 99.50th=[ 116], 99.90th=[ 157], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 23, max= 144, per=25.12%, avg=71.58, stdev=29.13, samples=173 iops : min= 5, max= 36, avg=17.65, stdev= 7.42, samples=173 lat (msec) : 4=0.49%, 10=22.14%, 20=16.67%, 50=47.85%, 100=12.11% lat (msec) : 250=0.72%, 1000=0.03% cpu : usr=0.10%, sys=8.42%, ctx=6063, 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=151060: Fri Aug 7 11:21:09 2026 read: IOPS=17, BW=68.9KiB/s (70.5kB/s)(6052KiB/87866msec) clat (msec): min=3, max=141, avg=15.79, stdev=15.14 lat (msec): min=3, max=141, avg=15.79, stdev=15.14 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 47], | 99.00th=[ 75], 99.50th=[ 94], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 7, max= 184, per=25.57%, avg=69.54, stdev=37.27, samples=173 iops : min= 1, max= 46, avg=17.14, stdev= 9.42, samples=173 write: IOPS=17, BW=70.0KiB/s (72.7kB/s)(6236KiB/87866msec); 0 zone resets clat (msec): min=14, max=869, avg=40.86, stdev=27.96 lat (msec): min=14, max=869, avg=40.86, stdev=27.96 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 33], 50.00th=[ 36], 60.00th=[ 40], | 70.00th=[ 44], 80.00th=[ 52], 90.00th=[ 65], 95.00th=[ 77], | 99.00th=[ 111], 99.50th=[ 126], 99.90th=[ 176], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 23, max= 136, per=25.13%, avg=71.62, stdev=28.73, samples=173 iops : min= 5, max= 34, avg=17.66, stdev= 7.31, samples=173 lat (msec) : 4=0.55%, 10=22.85%, 20=16.08%, 50=48.05%, 100=11.36% lat (msec) : 250=1.07%, 1000=0.03% cpu : usr=0.09%, sys=8.53%, ctx=6090, 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=273KiB/s (279kB/s), 67.9KiB/s-68.9KiB/s (69.5kB/s-70.5kB/s), io=23.4MiB (24.6MB), run=87469-87996msec WRITE: bw=286KiB/s (293kB/s), 70.0KiB/s-72.6KiB/s (72.7kB/s-74.3kB/s), io=24.6MiB (25.7MB), run=87469-87996msec 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=151099: Fri Aug 7 11:21:30 2026 read: IOPS=23, BW=373KiB/s (382kB/s)(5920KiB/15867msec) clat (usec): min=58, max=105214, avg=21358.90, stdev=13655.43 lat (usec): min=60, max=105215, avg=21359.93, stdev=13655.63 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 149], 10.00th=[ 314], 20.00th=[ 11600], | 30.00th=[ 15008], 40.00th=[ 17433], 50.00th=[ 20055], 60.00th=[ 23462], | 70.00th=[ 26608], 80.00th=[ 29754], 90.00th=[ 36963], 95.00th=[ 45876], | 99.00th=[ 58983], 99.50th=[ 73925], 99.90th=[105382], 99.95th=[105382], | 99.99th=[105382] bw ( KiB/s): min= 126, max= 685, per=24.46%, avg=367.19, stdev=114.33, samples=31 iops : min= 7, max= 42, avg=22.39, stdev= 7.11, samples=31 write: IOPS=25, BW=401KiB/s (411kB/s)(6368KiB/15867msec); 0 zone resets clat (usec): min=2213, max=97520, avg=19848.36, stdev=15394.13 lat (usec): min=2214, max=97520, avg=19850.18, stdev=15394.01 clat percentiles (usec): | 1.00th=[ 2540], 5.00th=[ 3818], 10.00th=[ 4686], 20.00th=[ 6652], | 30.00th=[ 9110], 40.00th=[12256], 50.00th=[14877], 60.00th=[19530], | 70.00th=[25035], 80.00th=[31327], 90.00th=[41157], 95.00th=[50070], | 99.00th=[66847], 99.50th=[82314], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 255, max= 790, per=25.17%, avg=397.42, stdev=112.54, samples=31 iops : min= 15, max= 49, avg=24.29, stdev= 7.15, samples=31 lat (usec) : 100=0.78%, 250=3.78%, 500=0.65%, 1000=0.13% lat (msec) : 4=2.73%, 10=16.93%, 20=30.99%, 50=39.84%, 100=4.04% lat (msec) : 250=0.13% cpu : usr=0.13%, sys=30.49%, ctx=2708, 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=151100: Fri Aug 7 11:21:30 2026 read: IOPS=22, BW=363KiB/s (372kB/s)(5744KiB/15820msec) clat (usec): min=76, max=84031, avg=22451.48, stdev=12565.38 lat (usec): min=77, max=84031, avg=22452.36, stdev=12565.41 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 223], 10.00th=[ 9765], 20.00th=[13173], | 30.00th=[15664], 40.00th=[18220], 50.00th=[20579], 60.00th=[23462], | 70.00th=[26608], 80.00th=[32113], 90.00th=[40633], 95.00th=[45351], | 99.00th=[60556], 99.50th=[64750], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 160, max= 606, per=24.02%, avg=360.55, stdev=107.81, samples=31 iops : min= 10, max= 37, avg=21.97, stdev= 6.75, samples=31 write: IOPS=25, BW=414KiB/s (424kB/s)(6544KiB/15820msec); 0 zone resets clat (usec): min=1080, max=107226, avg=18819.74, stdev=15106.22 lat (usec): min=1081, max=107227, avg=18821.88, stdev=15106.39 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 3458], 10.00th=[ 4424], 20.00th=[ 6456], | 30.00th=[ 8848], 40.00th=[ 11994], 50.00th=[ 15008], 60.00th=[ 18482], | 70.00th=[ 23200], 80.00th=[ 28181], 90.00th=[ 39584], 95.00th=[ 46924], | 99.00th=[ 71828], 99.50th=[ 84411], 99.90th=[107480], 99.95th=[107480], | 99.99th=[107480] bw ( KiB/s): min= 192, max= 843, per=26.12%, avg=412.45, stdev=146.22, samples=31 iops : min= 12, max= 52, avg=25.23, stdev= 9.18, samples=31 lat (usec) : 100=0.52%, 250=2.08%, 500=0.39% lat (msec) : 2=0.65%, 4=2.47%, 10=16.93%, 20=32.81%, 50=40.62% lat (msec) : 100=3.39%, 250=0.13% cpu : usr=0.11%, sys=31.06%, ctx=2668, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151101: Fri Aug 7 11:21:30 2026 read: IOPS=24, BW=392KiB/s (401kB/s)(6256KiB/15957msec) clat (usec): min=66, max=64353, avg=21458.13, stdev=12135.51 lat (usec): min=67, max=64353, avg=21459.15, stdev=12135.51 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 178], 10.00th=[ 7111], 20.00th=[12256], | 30.00th=[14484], 40.00th=[17433], 50.00th=[20841], 60.00th=[23725], | 70.00th=[27395], 80.00th=[31589], 90.00th=[37487], 95.00th=[41157], | 99.00th=[51643], 99.50th=[58459], 99.90th=[64226], 99.95th=[64226], | 99.99th=[64226] bw ( KiB/s): min= 128, max= 658, per=26.18%, avg=392.97, stdev=114.81, samples=31 iops : min= 8, max= 41, avg=24.03, stdev= 7.23, samples=31 write: IOPS=23, BW=378KiB/s (387kB/s)(6032KiB/15957msec); 0 zone resets clat (usec): min=1586, max=85224, avg=19935.25, stdev=15289.61 lat (usec): min=1588, max=85226, avg=19937.01, stdev=15289.70 clat percentiles (usec): | 1.00th=[ 3032], 5.00th=[ 4080], 10.00th=[ 4686], 20.00th=[ 7308], | 30.00th=[10290], 40.00th=[12911], 50.00th=[16450], 60.00th=[19530], | 70.00th=[23200], 80.00th=[28705], 90.00th=[41157], 95.00th=[52691], | 99.00th=[76022], 99.50th=[81265], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 128, max= 896, per=23.49%, avg=370.87, stdev=146.18, samples=31 iops : min= 8, max= 56, avg=22.65, stdev= 9.19, samples=31 lat (usec) : 100=0.39%, 250=4.17%, 500=0.26% lat (msec) : 2=0.26%, 4=1.95%, 10=14.71%, 20=32.68%, 50=41.93% lat (msec) : 100=3.65% cpu : usr=0.11%, sys=30.05%, ctx=2634, 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=151102: Fri Aug 7 11:21:30 2026 read: IOPS=24, BW=393KiB/s (402kB/s)(6032KiB/15348msec) clat (usec): min=35, max=105453, avg=21923.89, stdev=15370.88 lat (usec): min=35, max=105453, avg=21924.83, stdev=15370.89 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 135], 10.00th=[ 194], 20.00th=[ 10421], | 30.00th=[ 13960], 40.00th=[ 16188], 50.00th=[ 19268], 60.00th=[ 22938], | 70.00th=[ 27657], 80.00th=[ 32900], 90.00th=[ 40109], 95.00th=[ 46924], | 99.00th=[ 81265], 99.50th=[ 96994], 99.90th=[105382], 99.95th=[105382], | 99.99th=[105382] bw ( KiB/s): min= 159, max= 768, per=25.90%, avg=388.73, stdev=132.28, samples=30 iops : min= 9, max= 48, avg=23.77, stdev= 8.44, samples=30 write: IOPS=25, BW=408KiB/s (417kB/s)(6256KiB/15348msec); 0 zone resets clat (usec): min=1211, max=97466, avg=17985.80, stdev=13585.34 lat (usec): min=1212, max=97468, avg=17987.55, stdev=13585.37 clat percentiles (usec): | 1.00th=[ 2089], 5.00th=[ 4015], 10.00th=[ 4555], 20.00th=[ 6587], | 30.00th=[ 8455], 40.00th=[10945], 50.00th=[14091], 60.00th=[17433], | 70.00th=[22676], 80.00th=[27657], 90.00th=[37487], 95.00th=[44303], | 99.00th=[58983], 99.50th=[69731], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 224, max= 927, per=25.62%, avg=404.50, stdev=137.32, samples=30 iops : min= 14, max= 57, avg=24.73, stdev= 8.52, samples=30 lat (usec) : 50=0.26%, 100=0.78%, 250=4.30%, 500=0.39%, 750=0.13% lat (msec) : 2=0.26%, 4=2.34%, 10=17.71%, 20=33.07%, 50=38.28% lat (msec) : 100=2.34%, 250=0.13% cpu : usr=0.12%, sys=30.83%, ctx=2585, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1501KiB/s (1537kB/s), 363KiB/s-393KiB/s (372kB/s-402kB/s), io=23.4MiB (24.5MB), run=15348-15957msec WRITE: bw=1579KiB/s (1617kB/s), 378KiB/s-414KiB/s (387kB/s-424kB/s), io=24.6MiB (25.8MB), run=15348-15957msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151104: Fri Aug 7 11:21:38 2026 read: IOPS=16, BW=267KiB/s (273kB/s)(5920KiB/22186msec) clat (usec): min=3816, max=95550, avg=18435.94, stdev=17808.95 lat (usec): min=3816, max=95551, avg=18437.11, stdev=17808.94 clat percentiles (usec): | 1.00th=[ 4080], 5.00th=[ 5014], 10.00th=[ 5604], 20.00th=[ 6456], | 30.00th=[ 7308], 40.00th=[ 8356], 50.00th=[10683], 60.00th=[14877], | 70.00th=[20317], 80.00th=[27132], 90.00th=[40633], 95.00th=[60031], | 99.00th=[87557], 99.50th=[92799], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 95, max= 768, per=25.65%, avg=266.73, stdev=149.69, samples=44 iops : min= 5, max= 48, avg=16.20, stdev= 9.52, samples=44 write: IOPS=17, BW=287KiB/s (294kB/s)(6368KiB/22186msec); 0 zone resets clat (msec): min=14, max=136, avg=38.47, stdev=20.07 lat (msec): min=14, max=136, avg=38.47, stdev=20.07 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 67], 95.00th=[ 79], | 99.00th=[ 115], 99.50th=[ 129], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 63, max= 576, per=26.17%, avg=286.27, stdev=145.88, samples=44 iops : min= 3, max= 36, avg=17.43, stdev= 9.36, samples=44 lat (msec) : 4=0.39%, 10=22.40%, 20=14.84%, 50=47.66%, 100=13.80% lat (msec) : 250=0.91% cpu : usr=0.14%, sys=11.40%, ctx=1713, 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=151105: Fri Aug 7 11:21:38 2026 read: IOPS=15, BW=254KiB/s (260kB/s)(5744KiB/22586msec) clat (msec): min=3, max=108, avg=18.71, stdev=19.19 lat (msec): min=3, max=108, avg=18.71, stdev=19.19 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 15], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 42], 95.00th=[ 61], | 99.00th=[ 95], 99.50th=[ 103], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 63, max= 672, per=24.96%, avg=259.60, stdev=163.93, samples=43 iops : min= 3, max= 42, avg=15.74, stdev=10.52, samples=43 write: IOPS=18, BW=290KiB/s (297kB/s)(6544KiB/22586msec); 0 zone resets clat (msec): min=16, max=136, avg=38.67, stdev=20.68 lat (msec): min=16, max=136, avg=38.67, stdev=20.68 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 69], 95.00th=[ 80], | 99.00th=[ 112], 99.50th=[ 117], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 127, max= 544, per=25.97%, avg=284.14, stdev=137.22, samples=44 iops : min= 7, max= 34, avg=17.30, stdev= 8.79, samples=44 lat (msec) : 4=0.26%, 10=23.70%, 20=11.85%, 50=49.35%, 100=13.15% lat (msec) : 250=1.69% cpu : usr=0.09%, sys=10.97%, ctx=1766, 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=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=151106: Fri Aug 7 11:21:38 2026 read: IOPS=17, BW=277KiB/s (283kB/s)(6256KiB/22620msec) clat (msec): min=3, max=112, avg=18.69, stdev=19.32 lat (msec): min=3, max=112, avg=18.69, stdev=19.32 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 14], | 70.00th=[ 21], 80.00th=[ 30], 90.00th=[ 45], 95.00th=[ 62], | 99.00th=[ 107], 99.50th=[ 110], 99.90th=[ 112], 99.95th=[ 112], | 99.99th=[ 112] bw ( KiB/s): min= 63, max= 832, per=26.65%, avg=277.13, stdev=186.74, samples=45 iops : min= 3, max= 52, avg=16.87, stdev=11.86, samples=45 write: IOPS=16, BW=267KiB/s (273kB/s)(6032KiB/22620msec); 0 zone resets clat (msec): min=17, max=134, avg=40.48, stdev=22.69 lat (msec): min=17, max=134, avg=40.48, stdev=22.69 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 54], 90.00th=[ 74], 95.00th=[ 88], | 99.00th=[ 124], 99.50th=[ 134], 99.90th=[ 134], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 95, max= 576, per=24.30%, avg=265.89, stdev=145.90, samples=45 iops : min= 5, max= 36, avg=16.16, stdev= 9.40, samples=45 lat (msec) : 4=0.13%, 10=26.95%, 20=11.33%, 50=45.57%, 100=13.93% lat (msec) : 250=2.08% cpu : usr=0.11%, sys=11.23%, ctx=1787, 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=151107: Fri Aug 7 11:21:38 2026 read: IOPS=16, BW=262KiB/s (268kB/s)(6032KiB/23015msec) clat (msec): min=3, max=134, avg=19.81, stdev=20.36 lat (msec): min=3, max=134, avg=19.82, stdev=20.36 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 11], 60.00th=[ 15], | 70.00th=[ 23], 80.00th=[ 33], 90.00th=[ 50], 95.00th=[ 60], | 99.00th=[ 103], 99.50th=[ 106], 99.90th=[ 134], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 63, max= 666, per=24.40%, avg=253.73, stdev=149.41, samples=45 iops : min= 3, max= 41, avg=15.40, stdev= 9.53, samples=45 write: IOPS=16, BW=272KiB/s (278kB/s)(6256KiB/23015msec); 0 zone resets clat (msec): min=13, max=137, avg=39.61, stdev=22.54 lat (msec): min=13, max=137, avg=39.62, stdev=22.54 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 70], 95.00th=[ 88], | 99.00th=[ 131], 99.50th=[ 136], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 63, max= 576, per=24.24%, avg=265.13, stdev=152.56, samples=45 iops : min= 3, max= 36, avg=16.11, stdev= 9.78, samples=45 lat (msec) : 4=0.26%, 10=24.09%, 20=13.02%, 50=46.48%, 100=14.45% lat (msec) : 250=1.69% cpu : usr=0.14%, sys=10.86%, ctx=1755, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1041KiB/s (1066kB/s), 254KiB/s-277KiB/s (260kB/s-283kB/s), io=23.4MiB (24.5MB), run=22186-23015msec WRITE: bw=1095KiB/s (1121kB/s), 267KiB/s-290KiB/s (273kB/s-297kB/s), io=24.6MiB (25.8MB), run=22186-23015msec 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=151115: Fri Aug 7 11:21:47 2026 read: IOPS=3, BW=3314KiB/s (3393kB/s)(7168KiB/2163msec) clat (msec): min=50, max=404, avg=183.87, stdev=132.66 lat (msec): min=50, max=404, avg=183.87, stdev=132.66 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 66], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 128], 60.00th=[ 234], | 70.00th=[ 234], 80.00th=[ 300], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 2039, max= 5215, per=69.57%, avg=3783.33, stdev=1610.92, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 write: IOPS=2, BW=2367KiB/s (2424kB/s)(5120KiB/2163msec); 0 zone resets clat (msec): min=136, max=211, avg=170.12, stdev=32.11 lat (msec): min=136, max=211, avg=170.20, stdev=32.14 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 155], 60.00th=[ 155], | 70.00th=[ 197], 80.00th=[ 197], 90.00th=[ 211], 95.00th=[ 211], | 99.00th=[ 211], 99.50th=[ 211], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 2039, max= 4096, per=44.72%, avg=3404.67, stdev=1182.73, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (msec) : 100=16.67%, 250=66.67%, 500=16.67% cpu : usr=0.05%, sys=16.00%, ctx=87, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151116: Fri Aug 7 11:21:47 2026 read: IOPS=0, BW=544KiB/s (557kB/s)(2048KiB/3766msec) clat (usec): min=45340, max=61976, avg=53658.08, stdev=11763.38 lat (usec): min=45343, max=61976, avg=53660.04, stdev=11761.88 clat percentiles (usec): | 1.00th=[45351], 5.00th=[45351], 10.00th=[45351], 20.00th=[45351], | 30.00th=[45351], 40.00th=[45351], 50.00th=[45351], 60.00th=[62129], | 70.00th=[62129], 80.00th=[62129], 90.00th=[62129], 95.00th=[62129], | 99.00th=[62129], 99.50th=[62129], 99.90th=[62129], 99.95th=[62129], | 99.99th=[62129] bw ( KiB/s): min= 1738, max= 1988, per=34.26%, avg=1863.00, stdev=176.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2719KiB/s (2784kB/s)(10.0MiB/3766msec); 0 zone resets clat (msec): min=48, max=922, avg=364.76, stdev=279.04 lat (msec): min=48, max=922, avg=364.85, stdev=279.03 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 159], 50.00th=[ 176], 60.00th=[ 401], | 70.00th=[ 502], 80.00th=[ 542], 90.00th=[ 617], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1738, max= 5862, per=34.40%, avg=2619.00, stdev=1593.12, samples=6 iops : min= 1, max= 5, avg= 1.83, stdev= 1.60, samples=6 lat (msec) : 50=16.67%, 100=8.33%, 250=33.33%, 500=8.33%, 750=25.00% lat (msec) : 1000=8.33% cpu : usr=0.05%, sys=14.53%, ctx=164, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=151117: Fri Aug 7 11:21:47 2026 read: IOPS=1, BW=1729KiB/s (1771kB/s)(6144KiB/3553msec) clat (msec): min=81, max=248, avg=163.40, stdev=66.07 lat (msec): min=81, max=248, avg=163.40, stdev=66.07 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 95], | 30.00th=[ 95], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 176], | 70.00th=[ 220], 80.00th=[ 220], 90.00th=[ 249], 95.00th=[ 249], | 99.00th=[ 249], 99.50th=[ 249], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 2007, max= 3976, per=46.25%, avg=2515.25, stdev=973.95, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1729KiB/s (1771kB/s)(6144KiB/3553msec); 0 zone resets clat (msec): min=120, max=773, avg=417.73, stdev=219.34 lat (msec): min=120, max=773, avg=417.81, stdev=219.32 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 397], | 70.00th=[ 535], 80.00th=[ 535], 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= 1988, max= 3459, per=31.17%, avg=2373.25, stdev=724.14, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=14.30%, ctx=145, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151118: Fri Aug 7 11:21:47 2026 read: IOPS=1, BW=1842KiB/s (1886kB/s)(5120KiB/2780msec) clat (msec): min=80, max=415, avg=205.95, stdev=138.98 lat (msec): min=80, max=415, avg=205.95, stdev=138.98 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 165], 60.00th=[ 165], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2039, max= 6119, per=75.01%, avg=4079.00, stdev=2885.00, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2578KiB/s (2640kB/s)(7168KiB/2780msec); 0 zone resets clat (msec): min=66, max=428, avg=245.08, stdev=148.17 lat (msec): min=66, max=428, avg=245.16, stdev=148.16 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 107], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 234], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 3471, max= 4096, per=50.54%, avg=3847.67, stdev=331.68, samples=3 iops : min= 3, max= 4, avg= 3.33, stdev= 0.58, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=41.67% cpu : usr=0.00%, sys=12.59%, ctx=79, 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=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=5438KiB/s (5569kB/s), 544KiB/s-3314KiB/s (557kB/s-3393kB/s), io=20.0MiB (20.0MB), run=2163-3766msec WRITE: bw=7613KiB/s (7796kB/s), 1729KiB/s-2719KiB/s (1771kB/s-2784kB/s), io=28.0MiB (29.4MB), run=2163-3766msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151120: Fri Aug 7 11:21:47 2026 read: IOPS=2, BW=3009KiB/s (3081kB/s)(7168KiB/2382msec) clat (msec): min=97, max=304, avg=168.81, stdev=69.10 lat (msec): min=97, max=304, avg=168.81, stdev=69.10 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 121], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 171], | 70.00th=[ 171], 80.00th=[ 205], 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= 2031, max= 4096, per=57.13%, avg=3199.33, stdev=1058.97, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2149KiB/s (2201kB/s)(5120KiB/2382msec); 0 zone resets clat (msec): min=90, max=372, avg=227.46, stdev=134.66 lat (msec): min=90, max=372, avg=227.52, stdev=134.66 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 153], 60.00th=[ 153], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 2031, max= 4023, per=34.45%, avg=2700.67, stdev=1145.21, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=16.67%, 250=58.33%, 500=25.00% cpu : usr=0.00%, sys=54.85%, ctx=858, 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=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=151121: Fri Aug 7 11:21:47 2026 read: IOPS=0, BW=567KiB/s (580kB/s)(2048KiB/3613msec) clat (usec): min=757, max=164024, avg=82391.16, stdev=115447.19 lat (usec): min=758, max=164027, avg=82392.84, stdev=115448.15 clat percentiles (usec): | 1.00th=[ 758], 5.00th=[ 758], 10.00th=[ 758], 20.00th=[ 758], | 30.00th=[ 758], 40.00th=[ 758], 50.00th=[ 758], 60.00th=[164627], | 70.00th=[164627], 80.00th=[164627], 90.00th=[164627], 95.00th=[164627], | 99.00th=[164627], 99.50th=[164627], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 1718, max= 2011, per=33.29%, avg=1864.50, stdev=207.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2834KiB/s (2902kB/s)(10.0MiB/3613msec); 0 zone resets clat (msec): min=133, max=985, avg=342.40, stdev=292.55 lat (msec): min=133, max=985, avg=342.46, stdev=292.54 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 134], | 30.00th=[ 134], 40.00th=[ 174], 50.00th=[ 186], 60.00th=[ 211], | 70.00th=[ 317], 80.00th=[ 426], 90.00th=[ 726], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 2011, max= 4079, per=34.71%, avg=2721.00, stdev=973.21, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (usec) : 1000=8.33% lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=36.30%, ctx=121, 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=151122: Fri Aug 7 11:21:47 2026 read: IOPS=1, BW=1680KiB/s (1720kB/s)(6144KiB/3657msec) clat (usec): min=612, max=347018, avg=162545.25, stdev=140180.19 lat (usec): min=613, max=347019, avg=162546.45, stdev=140179.95 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[ 627], | 30.00th=[ 627], 40.00th=[152044], 50.00th=[152044], 60.00th=[223347], | 70.00th=[250610], 80.00th=[250610], 90.00th=[346031], 95.00th=[346031], | 99.00th=[346031], 99.50th=[346031], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 1954, max= 4079, per=44.98%, avg=2518.75, stdev=1040.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1680KiB/s (1720kB/s)(6144KiB/3657msec); 0 zone resets clat (msec): min=148, max=894, avg=424.26, stdev=311.62 lat (msec): min=148, max=894, avg=424.32, stdev=311.63 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 313], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1768, max= 3908, per=30.10%, avg=2359.60, stdev=873.62, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 750=16.67% lat (msec) : 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=38.57%, ctx=653, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151123: Fri Aug 7 11:21:47 2026 read: IOPS=1, BW=1652KiB/s (1692kB/s)(5120KiB/3099msec) clat (usec): min=571, max=311150, avg=182091.77, stdev=117267.86 lat (usec): min=572, max=311151, avg=182092.80, stdev=117267.75 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 570], | 30.00th=[164627], 40.00th=[164627], 50.00th=[179307], 60.00th=[179307], | 70.00th=[252707], 80.00th=[252707], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 2011, max= 6131, per=72.70%, avg=4071.00, stdev=2913.28, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2313KiB/s (2369kB/s)(7168KiB/3099msec); 0 zone resets clat (msec): min=135, max=637, avg=302.53, stdev=161.07 lat (msec): min=135, max=637, avg=302.61, stdev=161.07 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 209], | 30.00th=[ 251], 40.00th=[ 251], 50.00th=[ 268], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 347], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1759, max= 4063, per=31.61%, avg=2478.25, stdev=1065.10, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=50.00%, 750=8.33% cpu : usr=0.06%, sys=47.19%, ctx=549, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5600KiB/s (5735kB/s), 567KiB/s-3009KiB/s (580kB/s-3081kB/s), io=20.0MiB (20.0MB), run=2382-3657msec WRITE: bw=7840KiB/s (8028kB/s), 1680KiB/s-2834KiB/s (1720kB/s-2902kB/s), io=28.0MiB (29.4MB), run=2382-3657msec 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=151133: Fri Aug 7 11:21:55 2026 read: IOPS=1, BW=6752KiB/s (6914kB/s)(12.0MiB/1820msec) clat (msec): min=146, max=1055, avg=587.38, stdev=455.30 lat (msec): min=146, max=1055, avg=587.38, stdev=455.30 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 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= 8192, max= 8192, per=91.26%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.30%, ctx=54, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=151134: Fri Aug 7 11:21:55 2026 read: IOPS=0, BW=2244KiB/s (2298kB/s)(4096KiB/1825msec) clat (nsec): min=649453k, max=649453k, avg=649453224.00, stdev= 0.00 lat (nsec): min=649454k, max=649454k, avg=649454043.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 8192, max= 8192, per=91.26%, 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=4489KiB/s (4596kB/s)(8192KiB/1825msec); 0 zone resets clat (msec): min=447, max=656, avg=552.13, stdev=147.63 lat (msec): min=448, max=656, avg=552.41, stdev=147.64 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 8192, max= 8192, per=45.63%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.05%, sys=15.02%, ctx=135, 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=151135: Fri Aug 7 11:21:55 2026 write: IOPS=2, BW=8236KiB/s (8434kB/s)(12.0MiB/1492msec); 0 zone resets clat (msec): min=306, max=606, avg=492.32, stdev=162.09 lat (msec): min=306, max=606, avg=492.57, stdev=162.20 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 8192, max= 8192, per=45.63%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.13%, sys=23.88%, ctx=61, 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=151136: Fri Aug 7 11:21:55 2026 write: IOPS=1, BW=7173KiB/s (7346kB/s)(12.0MiB/1713msec); 0 zone resets clat (msec): min=145, max=1064, avg=552.78, stdev=468.49 lat (msec): min=145, max=1065, avg=553.05, stdev=468.51 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7801, max= 7801, per=43.45%, avg=7801.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=22.49%, ctx=277, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=8978KiB/s (9193kB/s), 2244KiB/s-6752KiB/s (2298kB/s-6914kB/s), io=16.0MiB (16.8MB), run=1820-1825msec WRITE: bw=17.5MiB/s (18.4MB/s), 4489KiB/s-8236KiB/s (4596kB/s-8434kB/s), io=32.0MiB (33.6MB), run=1492-1825msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151128: Fri Aug 7 11:21:55 2026 read: IOPS=2, BW=8866KiB/s (9079kB/s)(12.0MiB/1386msec) clat (msec): min=397, max=490, avg=437.10, stdev=47.72 lat (msec): min=397, max=490, avg=437.10, stdev=47.72 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 7474, max= 8078, per=72.67%, avg=7776.00, stdev=427.09, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=52.27%, ctx=2564, 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=151129: Fri Aug 7 11:21:55 2026 read: IOPS=0, BW=2675KiB/s (2740kB/s)(4096KiB/1531msec) clat (nsec): min=409427k, max=409427k, avg=409426605.00, stdev= 0.00 lat (nsec): min=409429k, max=409429k, avg=409429227.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 7613, max= 7613, per=71.14%, avg=7613.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5351KiB/s (5479kB/s)(8192KiB/1531msec); 0 zone resets clat (msec): min=300, max=768, avg=534.54, stdev=330.45 lat (msec): min=301, max=768, avg=534.81, stdev=330.46 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 8078, max= 8078, per=50.86%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=21.50%, ctx=883, 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=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=151130: Fri Aug 7 11:21:55 2026 write: IOPS=1, BW=5956KiB/s (6099kB/s)(12.0MiB/2063msec); 0 zone resets clat (msec): min=69, max=1423, avg=662.24, stdev=692.51 lat (msec): min=69, max=1423, avg=662.51, stdev=692.52 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 70], | 30.00th=[ 70], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8175, max= 8175, per=51.47%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=11.83%, ctx=131, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=151131: Fri Aug 7 11:21:55 2026 write: IOPS=1, BW=7488KiB/s (7668kB/s)(12.0MiB/1641msec); 0 zone resets clat (msec): min=221, max=1042, avg=525.30, stdev=450.47 lat (msec): min=221, max=1043, avg=525.65, stdev=450.44 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7613, max= 8078, per=49.40%, avg=7845.50, stdev=328.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.06%, sys=20.18%, ctx=157, 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=10.5MiB/s (10.0MB/s), 2675KiB/s-8866KiB/s (2740kB/s-9079kB/s), io=16.0MiB (16.8MB), run=1386-1531msec WRITE: bw=15.5MiB/s (16.3MB/s), 5351KiB/s-7488KiB/s (5479kB/s-7668kB/s), io=32.0MiB (33.6MB), run=1531-2063msec