== sanity test 398b: DIO and buffer IO race ============== 17:20:01 (1786483201) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.1387 s, 16.0 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=148208: Tue Aug 11 17:21:10 2026 read: IOPS=25, BW=102KiB/s (105kB/s)(5992KiB/58506msec) clat (usec): min=41, max=707351, avg=19335.84, stdev=21677.44 lat (usec): min=42, max=707352, avg=19336.97, stdev=21677.46 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 116], 10.00th=[ 8094], 20.00th=[ 10552], | 30.00th=[ 12387], 40.00th=[ 14091], 50.00th=[ 16057], 60.00th=[ 19006], | 70.00th=[ 22676], 80.00th=[ 27132], 90.00th=[ 33162], 95.00th=[ 39060], | 99.00th=[ 58459], 99.50th=[ 67634], 99.90th=[177210], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 15, max= 183, per=24.86%, avg=101.69, stdev=29.67, samples=116 iops : min= 3, max= 45, avg=24.89, stdev= 7.44, samples=116 write: IOPS=26, BW=108KiB/s (110kB/s)(6296KiB/58506msec); 0 zone resets clat (usec): min=786, max=266818, avg=18602.11, stdev=17530.42 lat (usec): min=788, max=266819, avg=18603.84, stdev=17530.01 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 2008], 10.00th=[ 2507], 20.00th=[ 3916], | 30.00th=[ 6718], 40.00th=[ 11994], 50.00th=[ 15139], 60.00th=[ 19006], | 70.00th=[ 23200], 80.00th=[ 29492], 90.00th=[ 38011], 95.00th=[ 47973], | 99.00th=[ 78119], 99.50th=[ 93848], 99.90th=[154141], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 31, max= 191, per=25.17%, avg=107.74, stdev=29.08, samples=115 iops : min= 7, max= 47, avg=26.40, stdev= 7.27, samples=115 lat (usec) : 50=0.20%, 100=1.73%, 250=0.88%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=2.47%, 4=8.01%, 10=12.96%, 20=35.81%, 50=34.77% lat (msec) : 100=2.47%, 250=0.29%, 500=0.03%, 750=0.03% cpu : usr=0.14%, sys=16.52%, ctx=8113, 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=148210: Tue Aug 11 17:21:10 2026 read: IOPS=25, BW=101KiB/s (104kB/s)(5940KiB/58708msec) clat (usec): min=37, max=142286, avg=19409.83, stdev=13198.05 lat (usec): min=37, max=142288, avg=19412.27, stdev=13198.25 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 112], 10.00th=[ 8225], 20.00th=[ 10552], | 30.00th=[ 12387], 40.00th=[ 14222], 50.00th=[ 16450], 60.00th=[ 19268], | 70.00th=[ 22938], 80.00th=[ 27919], 90.00th=[ 34866], 95.00th=[ 40109], | 99.00th=[ 68682], 99.50th=[ 82314], 99.90th=[137364], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 7, max= 175, per=24.51%, avg=100.24, stdev=30.57, samples=116 iops : min= 1, max= 43, avg=24.53, stdev= 7.66, samples=116 write: IOPS=27, BW=108KiB/s (111kB/s)(6348KiB/58708msec); 0 zone resets clat (usec): min=789, max=709028, avg=18680.87, stdev=24019.77 lat (usec): min=789, max=709029, avg=18683.54, stdev=24020.93 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1778], 10.00th=[ 2474], 20.00th=[ 3556], | 30.00th=[ 5604], 40.00th=[ 10290], 50.00th=[ 14353], 60.00th=[ 18220], | 70.00th=[ 23725], 80.00th=[ 30278], 90.00th=[ 40109], 95.00th=[ 49021], | 99.00th=[ 70779], 99.50th=[ 93848], 99.90th=[132645], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 223, per=24.92%, avg=106.66, stdev=31.10, samples=116 iops : min= 1, max= 55, avg=26.13, stdev= 7.76, samples=116 lat (usec) : 50=0.20%, 100=1.99%, 250=0.91%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=3.19%, 4=8.40%, 10=13.31%, 20=34.83%, 50=33.27% lat (msec) : 100=3.35%, 250=0.26%, 750=0.03% cpu : usr=0.12%, sys=16.63%, ctx=8005, 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=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=148212: Tue Aug 11 17:21:10 2026 read: IOPS=25, BW=103KiB/s (106kB/s)(6028KiB/58440msec) clat (usec): min=34, max=176347, avg=18815.66, stdev=12741.80 lat (usec): min=35, max=176348, avg=18816.82, stdev=12741.94 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 98], 10.00th=[ 7898], 20.00th=[ 10552], | 30.00th=[ 12256], 40.00th=[ 14091], 50.00th=[ 16057], 60.00th=[ 18744], | 70.00th=[ 22676], 80.00th=[ 26870], 90.00th=[ 32900], 95.00th=[ 40109], | 99.00th=[ 60031], 99.50th=[ 73925], 99.90th=[114820], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 16, max= 183, per=25.54%, avg=104.46, stdev=32.27, samples=114 iops : min= 4, max= 45, avg=25.58, stdev= 8.07, samples=114 write: IOPS=26, BW=107KiB/s (110kB/s)(6260KiB/58440msec); 0 zone resets clat (usec): min=901, max=781095, avg=19062.77, stdev=25737.25 lat (usec): min=902, max=781097, avg=19066.81, stdev=25736.22 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1860], 10.00th=[ 2376], 20.00th=[ 3654], | 30.00th=[ 5932], 40.00th=[ 11076], 50.00th=[ 15008], 60.00th=[ 18482], | 70.00th=[ 23987], 80.00th=[ 30540], 90.00th=[ 39060], 95.00th=[ 50070], | 99.00th=[ 77071], 99.50th=[ 98042], 99.90th=[160433], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 16, max= 191, per=25.11%, avg=107.45, stdev=31.51, samples=115 iops : min= 4, max= 47, avg=26.33, stdev= 7.89, samples=115 lat (usec) : 50=0.42%, 100=2.21%, 250=1.04%, 750=0.03%, 1000=0.13% lat (msec) : 2=3.19%, 4=8.01%, 10=12.47%, 20=35.61%, 50=33.56% lat (msec) : 100=3.03%, 250=0.26%, 1000=0.03% cpu : usr=0.10%, sys=16.61%, ctx=8036, 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=148213: Tue Aug 11 17:21:10 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(6052KiB/58368msec) clat (usec): min=36, max=719301, avg=19342.08, stdev=22434.06 lat (usec): min=36, max=719301, avg=19343.06, stdev=22434.02 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 123], 10.00th=[ 8094], 20.00th=[ 10552], | 30.00th=[ 12387], 40.00th=[ 14222], 50.00th=[ 16319], 60.00th=[ 18744], | 70.00th=[ 21890], 80.00th=[ 26084], 90.00th=[ 32900], 95.00th=[ 38536], | 99.00th=[ 68682], 99.50th=[104334], 99.90th=[141558], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 192, per=25.25%, avg=103.28, stdev=33.18, samples=116 iops : min= 1, max= 48, avg=25.28, stdev= 8.33, samples=116 write: IOPS=26, BW=107KiB/s (109kB/s)(6236KiB/58368msec); 0 zone resets clat (usec): min=878, max=161935, avg=18507.15, stdev=16718.75 lat (usec): min=878, max=161937, avg=18508.82, stdev=16718.49 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1680], 10.00th=[ 2442], 20.00th=[ 3556], | 30.00th=[ 5932], 40.00th=[ 11207], 50.00th=[ 15139], 60.00th=[ 19268], | 70.00th=[ 23725], 80.00th=[ 31065], 90.00th=[ 38536], 95.00th=[ 48497], | 99.00th=[ 69731], 99.50th=[ 91751], 99.90th=[133694], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 24, max= 208, per=24.83%, avg=106.29, stdev=30.71, samples=116 iops : min= 6, max= 52, avg=26.04, stdev= 7.72, samples=116 lat (usec) : 50=0.23%, 100=1.60%, 250=1.37%, 500=0.20%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=3.16%, 4=8.27%, 10=12.40%, 20=35.25%, 50=34.18% lat (msec) : 100=2.70%, 250=0.46%, 750=0.03% cpu : usr=0.14%, sys=16.57%, ctx=8053, 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=409KiB/s (419kB/s), 101KiB/s-104KiB/s (104kB/s-106kB/s), io=23.4MiB (24.6MB), run=58368-58708msec WRITE: bw=428KiB/s (438kB/s), 107KiB/s-108KiB/s (109kB/s-111kB/s), io=24.6MiB (25.7MB), run=58368-58708msec fio: pid=148209, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=148209: Tue Aug 11 17:22:05 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(3512KiB/81151msec) clat (msec): min=4, max=732, avg=23.03, stdev=30.56 lat (msec): min=4, max=732, avg=23.03, stdev=30.56 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 33], 90.00th=[ 45], 95.00th=[ 58], | 99.00th=[ 106], 99.50th=[ 129], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 128, per=23.21%, avg=43.87, stdev=26.42, samples=157 iops : min= 1, max= 32, avg=10.54, stdev= 6.69, samples=157 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(3692KiB/81151msec); 0 zone resets clat (msec): min=22, max=295, avg=65.79, stdev=27.85 lat (msec): min=22, max=295, avg=65.79, stdev=27.85 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 33], 10.00th=[ 37], 20.00th=[ 44], | 30.00th=[ 50], 40.00th=[ 55], 50.00th=[ 61], 60.00th=[ 67], | 70.00th=[ 77], 80.00th=[ 85], 90.00th=[ 101], 95.00th=[ 114], | 99.00th=[ 150], 99.50th=[ 188], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 15, max= 104, per=23.08%, avg=45.47, stdev=18.40, samples=159 iops : min= 3, max= 26, avg=10.94, stdev= 4.71, samples=159 lat (msec) : 10=12.43%, 20=17.37%, 50=31.30%, 100=33.19%, 250=5.55% lat (msec) : 500=0.06%, 750=0.06% cpu : usr=0.06%, sys=4.27%, ctx=3128, majf=0, minf=23 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=879,923,0,0 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=148211: Tue Aug 11 17:22:05 2026 read: IOPS=13, BW=52.2KiB/s (53.4kB/s)(5940KiB/113824msec) clat (msec): min=4, max=730, avg=17.96, stdev=23.60 lat (msec): min=4, max=730, avg=17.96, stdev=23.60 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 18], 80.00th=[ 23], 90.00th=[ 35], 95.00th=[ 46], | 99.00th=[ 79], 99.50th=[ 101], 99.90th=[ 150], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 144, per=28.08%, avg=53.06, stdev=31.45, samples=221 iops : min= 1, max= 36, avg=12.89, stdev= 7.95, samples=221 write: IOPS=13, BW=55.8KiB/s (57.1kB/s)(6348KiB/113824msec); 0 zone resets clat (msec): min=18, max=276, avg=54.77, stdev=26.47 lat (msec): min=18, max=276, avg=54.77, stdev=26.47 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 43], 50.00th=[ 48], 60.00th=[ 54], | 70.00th=[ 62], 80.00th=[ 73], 90.00th=[ 90], 95.00th=[ 106], | 99.00th=[ 146], 99.50th=[ 169], 99.90th=[ 230], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 8, max= 112, per=28.19%, avg=55.53, stdev=22.69, samples=225 iops : min= 2, max= 28, avg=13.50, stdev= 5.80, samples=225 lat (msec) : 10=15.59%, 20=20.90%, 50=38.15%, 100=21.78%, 250=3.52% lat (msec) : 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=4.43%, ctx=6055, 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=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=148214: Tue Aug 11 17:22:05 2026 read: IOPS=13, BW=53.4KiB/s (54.7kB/s)(6028KiB/112856msec) clat (msec): min=3, max=122, avg=17.69, stdev=14.31 lat (msec): min=3, max=122, avg=17.69, stdev=14.31 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 19], 80.00th=[ 23], 90.00th=[ 36], 95.00th=[ 46], | 99.00th=[ 74], 99.50th=[ 92], 99.90th=[ 122], 99.95th=[ 124], | 99.99th=[ 124] bw ( KiB/s): min= 7, max= 192, per=28.35%, avg=53.58, stdev=30.36, samples=222 iops : min= 1, max= 48, avg=13.01, stdev= 7.64, samples=222 write: IOPS=13, BW=55.5KiB/s (56.8kB/s)(6260KiB/112856msec); 0 zone resets clat (msec): min=18, max=769, avg=54.93, stdev=31.03 lat (msec): min=18, max=769, avg=54.93, stdev=31.03 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 28], 10.00th=[ 31], 20.00th=[ 35], | 30.00th=[ 39], 40.00th=[ 43], 50.00th=[ 48], 60.00th=[ 54], | 70.00th=[ 62], 80.00th=[ 73], 90.00th=[ 88], 95.00th=[ 100], | 99.00th=[ 148], 99.50th=[ 171], 99.90th=[ 275], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 15, max= 112, per=28.11%, avg=55.39, stdev=22.80, samples=223 iops : min= 3, max= 28, avg=13.47, stdev= 5.83, samples=223 lat (msec) : 4=0.07%, 10=15.30%, 20=21.26%, 50=38.15%, 100=22.56% lat (msec) : 250=2.60%, 500=0.03%, 1000=0.03% cpu : usr=0.07%, sys=4.52%, ctx=6141, 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=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=148215: Tue Aug 11 17:22:05 2026 read: IOPS=13, BW=53.7KiB/s (55.0kB/s)(6052KiB/112620msec) clat (msec): min=4, max=172, avg=17.47, stdev=15.44 lat (msec): min=4, max=172, avg=17.47, stdev=15.44 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 18], 80.00th=[ 22], 90.00th=[ 35], 95.00th=[ 47], | 99.00th=[ 77], 99.50th=[ 109], 99.90th=[ 155], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 7, max= 168, per=28.80%, avg=54.44, stdev=29.97, samples=220 iops : min= 1, max= 42, avg=13.23, stdev= 7.61, samples=220 write: IOPS=13, BW=55.4KiB/s (56.7kB/s)(6236KiB/112620msec); 0 zone resets clat (msec): min=18, max=809, avg=55.14, stdev=31.29 lat (msec): min=18, max=809, avg=55.14, stdev=31.29 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 28], 10.00th=[ 31], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 49], 60.00th=[ 55], | 70.00th=[ 64], 80.00th=[ 73], 90.00th=[ 89], 95.00th=[ 104], | 99.00th=[ 128], 99.50th=[ 146], 99.90th=[ 271], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 8, max= 111, per=28.04%, avg=55.24, stdev=22.70, samples=223 iops : min= 2, max= 27, avg=13.43, stdev= 5.79, samples=223 lat (msec) : 10=15.43%, 20=22.36%, 50=36.39%, 100=22.72%, 250=3.03% lat (msec) : 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.50%, ctx=6084, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=189KiB/s (194kB/s), 43.3KiB/s-53.7KiB/s (44.3kB/s-55.0kB/s), io=21.0MiB (22.0MB), run=81151-113824msec WRITE: bw=198KiB/s (203kB/s), 45.5KiB/s-55.8KiB/s (46.6kB/s-57.1kB/s), io=22.0MiB (23.1MB), run=81151-113824msec 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=148252: Tue Aug 11 17:22:25 2026 read: IOPS=26, BW=422KiB/s (433kB/s)(5920KiB/14013msec) clat (usec): min=33, max=92210, avg=18658.58, stdev=13400.38 lat (usec): min=33, max=92211, avg=18659.54, stdev=13400.30 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 65], 10.00th=[ 96], 20.00th=[ 8979], | 30.00th=[12911], 40.00th=[15533], 50.00th=[17957], 60.00th=[20317], | 70.00th=[24249], 80.00th=[27132], 90.00th=[33162], 95.00th=[39584], | 99.00th=[62129], 99.50th=[73925], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 255, max= 666, per=23.44%, avg=400.67, stdev=97.52, samples=27 iops : min= 15, max= 41, avg=24.37, stdev= 6.08, samples=27 write: IOPS=28, BW=454KiB/s (465kB/s)(6368KiB/14013msec); 0 zone resets clat (usec): min=1426, max=120017, avg=17820.40, stdev=16157.72 lat (usec): min=1428, max=120019, avg=17822.40, stdev=16157.71 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2540], 10.00th=[ 3163], 20.00th=[ 4555], | 30.00th=[ 6128], 40.00th=[ 9765], 50.00th=[ 13042], 60.00th=[ 16450], | 70.00th=[ 23200], 80.00th=[ 29492], 90.00th=[ 39060], 95.00th=[ 49021], | 99.00th=[ 72877], 99.50th=[111674], 99.90th=[120062], 99.95th=[120062], | 99.99th=[120062] bw ( KiB/s): min= 189, max= 669, per=24.08%, avg=432.93, stdev=119.49, samples=27 iops : min= 11, max= 41, avg=26.41, stdev= 7.52, samples=27 lat (usec) : 50=0.91%, 100=4.43%, 250=2.73%, 500=0.39% lat (msec) : 2=1.30%, 4=6.51%, 10=14.97%, 20=31.51%, 50=33.59% lat (msec) : 100=3.39%, 250=0.26% cpu : usr=0.16%, sys=21.28%, ctx=2109, 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=148253: Tue Aug 11 17:22:25 2026 read: IOPS=26, BW=417KiB/s (427kB/s)(5744KiB/13763msec) clat (usec): min=41, max=143714, avg=19368.77, stdev=14681.02 lat (usec): min=42, max=143714, avg=19370.08, stdev=14680.57 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 85], 10.00th=[ 127], 20.00th=[ 10683], | 30.00th=[ 13435], 40.00th=[ 15664], 50.00th=[ 17957], 60.00th=[ 21365], | 70.00th=[ 23987], 80.00th=[ 27919], 90.00th=[ 33162], 95.00th=[ 40633], | 99.00th=[ 67634], 99.50th=[102237], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 223, max= 636, per=24.37%, avg=416.41, stdev=91.01, samples=27 iops : min= 13, max= 39, avg=25.33, stdev= 5.78, samples=27 write: IOPS=29, BW=475KiB/s (487kB/s)(6544KiB/13763msec); 0 zone resets clat (usec): min=1670, max=94573, avg=16605.42, stdev=13456.57 lat (usec): min=1671, max=94575, avg=16608.58, stdev=13456.15 clat percentiles (usec): | 1.00th=[ 2212], 5.00th=[ 2704], 10.00th=[ 3556], 20.00th=[ 4686], | 30.00th=[ 6587], 40.00th=[ 9241], 50.00th=[12780], 60.00th=[16712], | 70.00th=[20841], 80.00th=[28443], 90.00th=[34341], 95.00th=[40109], | 99.00th=[56886], 99.50th=[58983], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 287, max= 790, per=26.38%, avg=474.37, stdev=122.35, samples=27 iops : min= 17, max= 49, avg=29.00, stdev= 7.81, samples=27 lat (usec) : 50=0.39%, 100=2.73%, 250=3.65%, 500=0.26% lat (msec) : 2=0.52%, 4=6.90%, 10=16.54%, 20=30.99%, 50=35.55% lat (msec) : 100=2.21%, 250=0.26% cpu : usr=0.15%, sys=22.37%, ctx=2199, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148254: Tue Aug 11 17:22:25 2026 read: IOPS=28, BW=458KiB/s (469kB/s)(6256KiB/13648msec) clat (usec): min=37, max=91034, avg=18435.04, stdev=12767.32 lat (usec): min=38, max=91035, avg=18436.72, stdev=12767.22 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 88], 10.00th=[ 113], 20.00th=[10290], | 30.00th=[12780], 40.00th=[15270], 50.00th=[17957], 60.00th=[20055], | 70.00th=[23462], 80.00th=[27132], 90.00th=[33162], 95.00th=[38011], | 99.00th=[58983], 99.50th=[82314], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 167, max= 734, per=26.92%, avg=460.00, stdev=127.34, samples=27 iops : min= 10, max= 45, avg=28.11, stdev= 7.90, samples=27 write: IOPS=27, BW=442KiB/s (453kB/s)(6032KiB/13648msec); 0 zone resets clat (usec): min=1477, max=129393, avg=17038.46, stdev=15947.13 lat (usec): min=1480, max=129394, avg=17040.50, stdev=15946.97 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 3097], 10.00th=[ 3556], 20.00th=[ 4621], | 30.00th=[ 6128], 40.00th=[ 8848], 50.00th=[ 12780], 60.00th=[ 15926], | 70.00th=[ 21365], 80.00th=[ 27657], 90.00th=[ 33424], 95.00th=[ 43254], | 99.00th=[ 86508], 99.50th=[103285], 99.90th=[129500], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 222, max= 701, per=24.60%, avg=442.30, stdev=127.66, samples=27 iops : min= 13, max= 43, avg=26.96, stdev= 8.01, samples=27 lat (usec) : 50=0.39%, 100=3.78%, 250=4.17%, 500=0.26% lat (msec) : 2=0.52%, 4=5.73%, 10=16.02%, 20=32.68%, 50=33.72% lat (msec) : 100=2.47%, 250=0.26% cpu : usr=0.14%, sys=22.00%, ctx=2148, 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=148255: Tue Aug 11 17:22:25 2026 read: IOPS=27, BW=444KiB/s (455kB/s)(6032KiB/13579msec) clat (usec): min=23, max=88276, avg=18622.56, stdev=14201.98 lat (usec): min=23, max=88277, avg=18630.04, stdev=14203.92 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 76], 10.00th=[ 110], 20.00th=[ 701], | 30.00th=[12125], 40.00th=[15270], 50.00th=[17695], 60.00th=[20841], | 70.00th=[23987], 80.00th=[28181], 90.00th=[34866], 95.00th=[45351], | 99.00th=[57934], 99.50th=[84411], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 195, max= 698, per=25.52%, avg=436.08, stdev=126.48, samples=26 iops : min= 12, max= 43, avg=26.62, stdev= 7.95, samples=26 write: IOPS=28, BW=461KiB/s (472kB/s)(6256KiB/13579msec); 0 zone resets clat (usec): min=1217, max=119571, avg=16723.06, stdev=15762.37 lat (usec): min=1218, max=119573, avg=16725.65, stdev=15762.97 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 3097], 10.00th=[ 3818], 20.00th=[ 4752], | 30.00th=[ 5866], 40.00th=[ 7439], 50.00th=[ 11731], 60.00th=[ 15926], | 70.00th=[ 21103], 80.00th=[ 27132], 90.00th=[ 33817], 95.00th=[ 48497], | 99.00th=[ 77071], 99.50th=[ 93848], 99.90th=[120062], 99.95th=[120062], | 99.99th=[120062] bw ( KiB/s): min= 251, max= 670, per=25.34%, avg=455.54, stdev=95.80, samples=26 iops : min= 15, max= 41, avg=27.81, stdev= 6.04, samples=26 lat (usec) : 50=0.65%, 100=3.52%, 250=5.21%, 500=0.39%, 750=0.13% lat (msec) : 2=0.78%, 4=5.21%, 10=20.31%, 20=25.91%, 50=34.51% lat (msec) : 100=3.26%, 250=0.13% cpu : usr=0.13%, sys=22.02%, ctx=2161, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1709KiB/s (1750kB/s), 417KiB/s-458KiB/s (427kB/s-469kB/s), io=23.4MiB (24.5MB), run=13579-14013msec WRITE: bw=1798KiB/s (1841kB/s), 442KiB/s-475KiB/s (453kB/s-487kB/s), io=24.6MiB (25.8MB), run=13579-14013msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148247: Tue Aug 11 17:22:39 2026 read: IOPS=12, BW=207KiB/s (212kB/s)(5920KiB/28662msec) clat (msec): min=4, max=142, avg=18.21, stdev=19.53 lat (msec): min=4, max=142, avg=18.21, stdev=19.53 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 39], 95.00th=[ 61], | 99.00th=[ 106], 99.50th=[ 123], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 63, max= 416, per=24.32%, avg=203.04, stdev=93.14, samples=55 iops : min= 3, max= 26, avg=12.24, stdev= 5.94, samples=55 write: IOPS=13, BW=222KiB/s (228kB/s)(6368KiB/28662msec); 0 zone resets clat (msec): min=17, max=170, avg=54.95, stdev=24.79 lat (msec): min=17, max=170, avg=54.95, stdev=24.79 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 32], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 45], 50.00th=[ 49], 60.00th=[ 54], | 70.00th=[ 60], 80.00th=[ 71], 90.00th=[ 92], 95.00th=[ 105], | 99.00th=[ 153], 99.50th=[ 163], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 63, max= 415, per=24.85%, avg=218.41, stdev=92.19, samples=56 iops : min= 3, max= 25, avg=13.20, stdev= 5.81, samples=56 lat (msec) : 10=21.61%, 20=14.71%, 50=36.07%, 100=23.83%, 250=3.78% cpu : usr=0.07%, sys=4.95%, ctx=1527, 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=148248: Tue Aug 11 17:22:39 2026 read: IOPS=12, BW=201KiB/s (206kB/s)(5744KiB/28560msec) clat (msec): min=4, max=108, avg=16.35, stdev=15.63 lat (msec): min=4, max=108, avg=16.35, stdev=15.63 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 11], 60.00th=[ 12], | 70.00th=[ 15], 80.00th=[ 22], 90.00th=[ 36], 95.00th=[ 56], | 99.00th=[ 79], 99.50th=[ 86], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 32, max= 512, per=24.30%, avg=202.87, stdev=111.10, samples=55 iops : min= 2, max= 32, avg=12.22, stdev= 7.06, samples=55 write: IOPS=14, BW=229KiB/s (235kB/s)(6544KiB/28560msec); 0 zone resets clat (msec): min=21, max=206, avg=55.39, stdev=24.27 lat (msec): min=21, max=206, avg=55.40, stdev=24.28 clat percentiles (msec): | 1.00th=[ 25], 5.00th=[ 30], 10.00th=[ 33], 20.00th=[ 37], | 30.00th=[ 41], 40.00th=[ 45], 50.00th=[ 50], 60.00th=[ 55], | 70.00th=[ 62], 80.00th=[ 70], 90.00th=[ 85], 95.00th=[ 104], | 99.00th=[ 144], 99.50th=[ 153], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 63, max= 383, per=25.67%, avg=225.66, stdev=85.91, samples=56 iops : min= 3, max= 23, avg=13.64, stdev= 5.48, samples=56 lat (msec) : 10=21.61%, 20=15.49%, 50=34.24%, 100=25.26%, 250=3.39% cpu : usr=0.08%, sys=4.95%, ctx=1550, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148249: Tue Aug 11 17:22:39 2026 read: IOPS=13, BW=223KiB/s (228kB/s)(6256KiB/28041msec) clat (msec): min=4, max=146, avg=16.87, stdev=16.87 lat (msec): min=4, max=146, avg=16.87, stdev=16.87 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 11], 60.00th=[ 12], | 70.00th=[ 16], 80.00th=[ 21], 90.00th=[ 34], 95.00th=[ 53], | 99.00th=[ 93], 99.50th=[ 109], 99.90th=[ 146], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 31, max= 636, per=26.91%, avg=224.69, stdev=128.31, samples=55 iops : min= 1, max= 39, avg=13.60, stdev= 8.08, samples=55 write: IOPS=13, BW=215KiB/s (220kB/s)(6032KiB/28041msec); 0 zone resets clat (msec): min=24, max=160, avg=56.74, stdev=23.72 lat (msec): min=24, max=160, avg=56.74, stdev=23.72 clat percentiles (msec): | 1.00th=[ 28], 5.00th=[ 32], 10.00th=[ 34], 20.00th=[ 39], | 30.00th=[ 42], 40.00th=[ 46], 50.00th=[ 50], 60.00th=[ 55], | 70.00th=[ 63], 80.00th=[ 77], 90.00th=[ 91], 95.00th=[ 105], | 99.00th=[ 142], 99.50th=[ 153], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 95, max= 352, per=24.18%, avg=212.51, stdev=79.34, samples=55 iops : min= 5, max= 22, avg=12.84, stdev= 5.05, samples=55 lat (msec) : 10=22.53%, 20=17.97%, 50=32.81%, 100=23.57%, 250=3.12% cpu : usr=0.06%, sys=5.17%, ctx=1567, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148250: Tue Aug 11 17:22:39 2026 read: IOPS=13, BW=214KiB/s (219kB/s)(6032KiB/28239msec) clat (msec): min=4, max=139, avg=17.31, stdev=17.65 lat (msec): min=4, max=139, avg=17.31, stdev=17.65 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 23], 90.00th=[ 37], 95.00th=[ 50], | 99.00th=[ 103], 99.50th=[ 128], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 63, max= 510, per=25.42%, avg=212.23, stdev=107.43, samples=56 iops : min= 3, max= 31, avg=12.80, stdev= 6.76, samples=56 write: IOPS=13, BW=222KiB/s (227kB/s)(6256KiB/28239msec); 0 zone resets clat (msec): min=24, max=174, avg=55.41, stdev=23.26 lat (msec): min=24, max=174, avg=55.41, stdev=23.26 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 30], 10.00th=[ 33], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 46], 50.00th=[ 51], 60.00th=[ 55], | 70.00th=[ 61], 80.00th=[ 70], 90.00th=[ 85], 95.00th=[ 102], | 99.00th=[ 138], 99.50th=[ 155], 99.90th=[ 176], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 95, max= 352, per=25.15%, avg=221.11, stdev=84.77, samples=56 iops : min= 5, max= 22, avg=13.38, stdev= 5.38, samples=56 lat (msec) : 10=21.88%, 20=15.89%, 50=34.24%, 100=24.74%, 250=3.26% cpu : usr=0.08%, sys=5.22%, ctx=1538, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=836KiB/s (856kB/s), 201KiB/s-223KiB/s (206kB/s-228kB/s), io=23.4MiB (24.5MB), run=28041-28662msec WRITE: bw=879KiB/s (900kB/s), 215KiB/s-229KiB/s (220kB/s-235kB/s), io=24.6MiB (25.8MB), run=28041-28662msec 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=148265: Tue Aug 11 17:22:49 2026 read: IOPS=2, BW=2168KiB/s (2220kB/s)(7168KiB/3306msec) clat (msec): min=93, max=1404, avg=335.93, stdev=474.51 lat (msec): min=93, max=1404, avg=335.93, stdev=474.52 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 131], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 144], 60.00th=[ 178], | 70.00th=[ 178], 80.00th=[ 268], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 2031, max= 6107, per=73.47%, avg=3871.67, stdev=2066.46, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1549KiB/s (1586kB/s)(5120KiB/3306msec); 0 zone resets clat (msec): min=71, max=312, avg=184.75, stdev=86.95 lat (msec): min=71, max=313, avg=184.86, stdev=86.93 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 192], 60.00th=[ 192], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 313], 95.00th=[ 313], | 99.00th=[ 313], 99.50th=[ 313], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 2035, max= 6131, per=55.34%, avg=4083.00, stdev=2896.31, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=16.67%, 250=58.33%, 500=16.67%, 2000=8.33% cpu : usr=0.03%, sys=36.31%, ctx=1237, 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=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=148266: Tue Aug 11 17:22:49 2026 read: IOPS=0, BW=576KiB/s (589kB/s)(2048KiB/3558msec) clat (usec): min=510, max=85759, avg=43134.81, stdev=60280.55 lat (usec): min=511, max=85762, avg=43136.81, stdev=60281.32 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[85459], | 70.00th=[85459], 80.00th=[85459], 90.00th=[85459], 95.00th=[85459], | 99.00th=[85459], 99.50th=[85459], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 1741, max= 2043, per=35.90%, avg=1892.00, stdev=213.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2878KiB/s (2947kB/s)(10.0MiB/3558msec); 0 zone resets clat (msec): min=92, max=1641, avg=346.15, stdev=477.08 lat (msec): min=92, max=1641, avg=346.24, stdev=477.07 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 96], | 30.00th=[ 102], 40.00th=[ 112], 50.00th=[ 125], 60.00th=[ 125], | 70.00th=[ 313], 80.00th=[ 342], 90.00th=[ 518], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 2043, max= 8175, per=64.52%, avg=4760.33, stdev=3124.91, samples=3 iops : min= 1, max= 7, avg= 3.67, stdev= 3.06, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=25.00%, 250=33.33%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.06%, sys=27.44%, ctx=189, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148267: Tue Aug 11 17:22:49 2026 read: IOPS=1, BW=1581KiB/s (1619kB/s)(6144KiB/3886msec) clat (usec): min=983, max=269609, avg=119301.81, stdev=102833.50 lat (usec): min=984, max=269610, avg=119303.14, stdev=102833.30 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 988], 10.00th=[ 988], 20.00th=[ 2245], | 30.00th=[ 2245], 40.00th=[139461], 50.00th=[139461], 60.00th=[145753], | 70.00th=[158335], 80.00th=[158335], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 2031, max= 4096, per=64.60%, avg=3404.67, stdev=1189.64, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1581KiB/s (1619kB/s)(6144KiB/3886msec); 0 zone resets clat (msec): min=177, max=1783, avg=521.24, stdev=623.45 lat (msec): min=177, max=1783, avg=521.32, stdev=623.46 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 313], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 2031, max= 3465, per=32.49%, avg=2396.75, stdev=712.20, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 250=50.00%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=24.40%, ctx=298, 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=148268: Tue Aug 11 17:22:49 2026 read: IOPS=1, BW=1769KiB/s (1811kB/s)(5120KiB/2895msec) clat (usec): min=560, max=162700, avg=68951.03, stdev=69449.43 lat (usec): min=561, max=162701, avg=68952.43, stdev=69449.42 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 562], | 30.00th=[ 603], 40.00th=[ 603], 50.00th=[ 80217], 60.00th=[ 80217], | 70.00th=[101188], 80.00th=[101188], 90.00th=[162530], 95.00th=[162530], | 99.00th=[162530], 99.50th=[162530], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 2035, max= 6131, per=77.48%, avg=4083.00, stdev=2896.31, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2476KiB/s (2535kB/s)(7168KiB/2895msec); 0 zone resets clat (msec): min=68, max=1469, avg=357.01, stdev=499.50 lat (msec): min=68, max=1469, avg=357.08, stdev=499.48 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 92], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 182], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 317], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 1735, max= 6107, per=53.14%, avg=3921.00, stdev=3091.47, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (usec) : 750=16.67% lat (msec) : 100=25.00%, 250=33.33%, 500=16.67%, 2000=8.33% cpu : usr=0.00%, sys=30.62%, ctx=381, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5270KiB/s (5397kB/s), 576KiB/s-2168KiB/s (589kB/s-2220kB/s), io=20.0MiB (20.0MB), run=2895-3886msec WRITE: bw=7378KiB/s (7555kB/s), 1549KiB/s-2878KiB/s (1586kB/s-2947kB/s), io=28.0MiB (29.4MB), run=2895-3886msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148270: Tue Aug 11 17:22:49 2026 read: IOPS=1, BW=1807KiB/s (1850kB/s)(7168KiB/3967msec) clat (msec): min=35, max=1783, avg=388.80, stdev=622.62 lat (msec): min=35, max=1783, avg=388.80, stdev=622.62 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 35], 10.00th=[ 35], 20.00th=[ 60], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 157], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 284], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 1712, max= 2048, per=39.31%, avg=1949.80, stdev=138.76, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=1, BW=1291KiB/s (1322kB/s)(5120KiB/3967msec); 0 zone resets clat (msec): min=76, max=443, avg=227.40, stdev=142.22 lat (msec): min=76, max=443, avg=227.50, stdev=142.23 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1950, max= 3992, per=42.79%, avg=2971.00, stdev=1443.91, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 50=8.33%, 100=16.67%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.03%, sys=8.47%, ctx=96, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=148271: Tue Aug 11 17:22:49 2026 read: IOPS=0, BW=526KiB/s (538kB/s)(2048KiB/3896msec) clat (msec): min=243, max=345, avg=294.72, stdev=71.87 lat (msec): min=243, max=345, avg=294.73, stdev=71.87 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1738, max= 1950, per=37.18%, avg=1844.00, stdev=149.91, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2628KiB/s (2691kB/s)(10.0MiB/3896msec); 0 zone resets clat (msec): min=76, max=1774, avg=320.74, stdev=516.26 lat (msec): min=76, max=1775, avg=320.84, stdev=516.28 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 80], | 30.00th=[ 107], 40.00th=[ 125], 50.00th=[ 140], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 247], 90.00th=[ 313], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 1950, max= 8192, per=67.85%, avg=4711.33, stdev=3182.57, samples=3 iops : min= 1, max= 8, avg= 4.00, stdev= 3.61, samples=3 lat (msec) : 100=16.67%, 250=58.33%, 500=16.67%, 2000=8.33% cpu : usr=0.05%, sys=11.12%, ctx=140, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148272: Tue Aug 11 17:22:49 2026 read: IOPS=1, BW=1488KiB/s (1524kB/s)(6144KiB/4129msec) clat (msec): min=34, max=240, avg=117.81, stdev=76.92 lat (msec): min=34, max=240, avg=117.81, stdev=76.92 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 35], 10.00th=[ 35], 20.00th=[ 37], | 30.00th=[ 37], 40.00th=[ 117], 50.00th=[ 117], 60.00th=[ 128], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 3992, max= 6144, per=100.00%, avg=5068.00, stdev=1521.69, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1488KiB/s (1524kB/s)(6144KiB/4129msec); 0 zone resets clat (msec): min=89, max=2468, avg=554.67, stdev=944.77 lat (msec): min=89, max=2468, avg=554.90, stdev=944.70 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 94], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 94], 60.00th=[ 192], | 70.00th=[ 393], 80.00th=[ 393], 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= 1950, max= 4096, per=41.60%, avg=2888.50, stdev=1083.84, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (msec) : 50=16.67%, 100=25.00%, 250=41.67%, 500=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.19%, ctx=116, 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=148273: Tue Aug 11 17:22:49 2026 read: IOPS=1, BW=1248KiB/s (1278kB/s)(5120KiB/4103msec) clat (msec): min=56, max=176, avg=110.25, stdev=50.05 lat (msec): min=56, max=176, avg=110.26, stdev=50.05 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 57], | 30.00th=[ 67], 40.00th=[ 67], 50.00th=[ 114], 60.00th=[ 114], | 70.00th=[ 140], 80.00th=[ 140], 90.00th=[ 178], 95.00th=[ 178], | 99.00th=[ 178], 99.50th=[ 178], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 5988, max= 5988, per=100.00%, avg=5988.00, stdev= 0.00, samples=1 iops : min= 5, max= 5, avg= 5.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1747KiB/s (1789kB/s)(7168KiB/4103msec); 0 zone resets clat (msec): min=69, max=2365, avg=494.62, stdev=834.79 lat (msec): min=70, max=2365, avg=494.72, stdev=834.82 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 83], | 30.00th=[ 134], 40.00th=[ 134], 50.00th=[ 163], 60.00th=[ 192], | 70.00th=[ 192], 80.00th=[ 456], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 1762, max= 3900, per=36.76%, avg=2552.67, stdev=1172.68, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=33.33%, 250=50.00%, 500=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=8.48%, ctx=88, 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=4960KiB/s (5079kB/s), 526KiB/s-1807KiB/s (538kB/s-1850kB/s), io=20.0MiB (20.0MB), run=3896-4129msec WRITE: bw=6944KiB/s (7111kB/s), 1291KiB/s-2628KiB/s (1322kB/s-2691kB/s), io=28.0MiB (29.4MB), run=3896-4129msec 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=148279: Tue Aug 11 17:22:58 2026 read: IOPS=1, BW=7928KiB/s (8118kB/s)(12.0MiB/1550msec) clat (msec): min=484, max=524, avg=502.28, stdev=20.13 lat (msec): min=484, max=524, avg=502.28, stdev=20.13 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 8175, max= 8175, per=93.91%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=49.64%, ctx=1889, 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=148280: Tue Aug 11 17:22:58 2026 read: IOPS=0, BW=2176KiB/s (2229kB/s)(4096KiB/1882msec) clat (nsec): min=465667k, max=465667k, avg=465666788.00, stdev= 0.00 lat (nsec): min=465671k, max=465671k, avg=465670835.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 8175, max= 8175, per=93.91%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4353KiB/s (4457kB/s)(8192KiB/1882msec); 0 zone resets clat (msec): min=674, max=682, avg=678.44, stdev= 5.98 lat (msec): min=674, max=682, avg=678.67, stdev= 5.91 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 8175, max= 8175, per=56.54%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=20.36%, ctx=757, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=148281: Tue Aug 11 17:22:58 2026 write: IOPS=1, BW=5423KiB/s (5553kB/s)(12.0MiB/2266msec); 0 zone resets clat (msec): min=147, max=1496, avg=749.63, stdev=685.83 lat (msec): min=148, max=1496, avg=749.97, stdev=685.87 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8192, max= 8192, per=56.65%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=12.58%, ctx=86, 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=148282: Tue Aug 11 17:22:58 2026 write: IOPS=1, BW=7224KiB/s (7397kB/s)(12.0MiB/1701msec); 0 zone resets clat (msec): min=184, max=1112, avg=558.02, stdev=489.57 lat (msec): min=184, max=1112, avg=558.38, stdev=489.62 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min=11283, max=11283, per=78.03%, avg=11283.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.12%, sys=14.94%, ctx=57, 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=8706KiB/s (8915kB/s), 2176KiB/s-7928KiB/s (2229kB/s-8118kB/s), io=16.0MiB (16.8MB), run=1550-1882msec WRITE: bw=14.1MiB/s (14.8MB/s), 4353KiB/s-7224KiB/s (4457kB/s-7397kB/s), io=32.0MiB (33.6MB), run=1701-2266msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148283: Tue Aug 11 17:22:58 2026 read: IOPS=1, BW=5863KiB/s (6003kB/s)(12.0MiB/2096msec) clat (msec): min=137, max=1096, avg=667.70, stdev=487.22 lat (msec): min=137, max=1096, avg=667.70, stdev=487.22 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.55%, ctx=99, 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=148284: Tue Aug 11 17:22:58 2026 read: IOPS=0, BW=1815KiB/s (1858kB/s)(4096KiB/2257msec) clat (nsec): min=917662k, max=917662k, avg=917662253.00, stdev= 0.00 lat (nsec): min=917664k, max=917664k, avg=917664462.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3630KiB/s (3717kB/s)(8192KiB/2257msec); 0 zone resets clat (msec): min=443, max=796, avg=620.13, stdev=249.18 lat (msec): min=444, max=796, avg=620.75, stdev=249.12 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 793], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 8175, max= 8175, per=56.31%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.09%, sys=15.69%, ctx=99, 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=148285: Tue Aug 11 17:22:58 2026 write: IOPS=1, BW=6209KiB/s (6358kB/s)(12.0MiB/1979msec); 0 zone resets clat (msec): min=509, max=835, avg=650.17, stdev=167.24 lat (msec): min=509, max=835, avg=650.63, stdev=167.17 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 5603, max= 8192, per=47.51%, avg=6897.50, stdev=1830.70, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=18.55%, ctx=87, 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=148286: Tue Aug 11 17:22:58 2026 write: IOPS=1, BW=6726KiB/s (6887kB/s)(12.0MiB/1827msec); 0 zone resets clat (msec): min=250, max=952, avg=575.56, stdev=353.80 lat (msec): min=251, max=953, avg=576.01, stdev=353.79 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 5688, max= 8192, per=47.80%, avg=6940.00, stdev=1770.60, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=20.37%, ctx=106, 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=7259KiB/s (7433kB/s), 1815KiB/s-5863KiB/s (1858kB/s-6003kB/s), io=16.0MiB (16.8MB), run=2096-2257msec WRITE: bw=14.2MiB/s (14.9MB/s), 3630KiB/s-6726KiB/s (3717kB/s-6887kB/s), io=32.0MiB (33.6MB), run=1827-2257msec