== sanity test 398b: DIO and buffer IO race ============== 10:00:15 (1788876015) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.7817 s, 8.7 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=179118: Tue Sep 8 10:02:23 2026 read: IOPS=13, BW=54.5KiB/s (55.8kB/s)(5992KiB/109930msec) clat (usec): min=40, max=219269, avg=39933.04, stdev=25844.14 lat (usec): min=41, max=219270, avg=39935.76, stdev=25843.59 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 8717], 10.00th=[ 15270], 20.00th=[ 20579], | 30.00th=[ 25297], 40.00th=[ 29754], 50.00th=[ 34341], 60.00th=[ 40633], | 70.00th=[ 46924], 80.00th=[ 57410], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[123208], 99.50th=[149947], 99.90th=[196084], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 7, max= 111, per=25.02%, avg=54.55, stdev=20.07, samples=215 iops : min= 1, max= 27, avg=12.98, stdev= 5.02, samples=215 write: IOPS=14, BW=57.3KiB/s (58.6kB/s)(6296KiB/109930msec); 0 zone resets clat (usec): min=1109, max=847666, avg=31533.65, stdev=36214.07 lat (usec): min=1110, max=847668, avg=31536.72, stdev=36213.39 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1483], 10.00th=[ 2147], 20.00th=[ 4359], | 30.00th=[ 8455], 40.00th=[ 16057], 50.00th=[ 23200], 60.00th=[ 30540], | 70.00th=[ 38536], 80.00th=[ 53216], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[129500], 99.50th=[143655], 99.90th=[170918], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 7, max= 119, per=25.14%, avg=57.32, stdev=22.25, samples=215 iops : min= 1, max= 29, avg=13.67, stdev= 5.58, samples=215 lat (usec) : 50=0.13%, 100=1.95%, 250=0.16% lat (msec) : 2=4.52%, 4=5.14%, 10=7.13%, 20=12.83%, 50=44.04% lat (msec) : 100=20.80%, 250=3.26%, 1000=0.03% cpu : usr=0.09%, sys=5.62%, ctx=6850, 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=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=179120: Tue Sep 8 10:02:23 2026 read: IOPS=13, BW=53.9KiB/s (55.2kB/s)(5940KiB/110110msec) clat (usec): min=27, max=214980, avg=40217.18, stdev=25087.64 lat (usec): min=28, max=214982, avg=40218.77, stdev=25087.72 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11731], 10.00th=[ 16450], 20.00th=[ 21103], | 30.00th=[ 25822], 40.00th=[ 29754], 50.00th=[ 34866], 60.00th=[ 40633], | 70.00th=[ 47973], 80.00th=[ 56886], 90.00th=[ 70779], 95.00th=[ 84411], | 99.00th=[129500], 99.50th=[154141], 99.90th=[185598], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 11, max= 119, per=24.69%, avg=53.83, stdev=18.80, samples=215 iops : min= 2, max= 29, avg=12.80, stdev= 4.70, samples=215 write: IOPS=14, BW=57.7KiB/s (59.0kB/s)(6348KiB/110110msec); 0 zone resets clat (usec): min=1172, max=828213, avg=31404.24, stdev=36718.08 lat (usec): min=1173, max=828215, avg=31406.89, stdev=36718.04 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1450], 10.00th=[ 2024], 20.00th=[ 3720], | 30.00th=[ 7308], 40.00th=[ 14746], 50.00th=[ 22414], 60.00th=[ 29492], | 70.00th=[ 40633], 80.00th=[ 54789], 90.00th=[ 72877], 95.00th=[ 88605], | 99.00th=[126354], 99.50th=[147850], 99.90th=[312476], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 175, per=25.13%, avg=57.31, stdev=23.11, samples=215 iops : min= 1, max= 43, avg=13.68, stdev= 5.81, samples=215 lat (usec) : 50=0.26%, 100=1.17%, 250=0.10%, 500=0.03% lat (msec) : 2=5.14%, 4=5.60%, 10=7.42%, 20=12.70%, 50=42.22% lat (msec) : 100=22.33%, 250=2.96%, 500=0.03%, 1000=0.03% cpu : usr=0.10%, sys=5.78%, ctx=6993, 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=179121: Tue Sep 8 10:02:23 2026 read: IOPS=14, BW=56.7KiB/s (58.1kB/s)(6028KiB/106247msec) clat (usec): min=32, max=209281, avg=38892.30, stdev=24659.42 lat (usec): min=32, max=209284, avg=38895.58, stdev=24659.11 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 6521], 10.00th=[ 15270], 20.00th=[ 20317], | 30.00th=[ 25035], 40.00th=[ 28967], 50.00th=[ 34341], 60.00th=[ 40109], | 70.00th=[ 46400], 80.00th=[ 55313], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[125305], 99.50th=[147850], 99.90th=[193987], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 7, max= 111, per=25.96%, avg=56.60, stdev=20.34, samples=209 iops : min= 1, max= 27, avg=13.50, stdev= 5.09, samples=209 write: IOPS=14, BW=58.9KiB/s (60.3kB/s)(6260KiB/106247msec); 0 zone resets clat (usec): min=1182, max=807234, avg=30085.18, stdev=35177.32 lat (usec): min=1183, max=807236, avg=30088.59, stdev=35177.74 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1434], 10.00th=[ 1893], 20.00th=[ 4047], | 30.00th=[ 7439], 40.00th=[ 14746], 50.00th=[ 22152], 60.00th=[ 28705], | 70.00th=[ 39060], 80.00th=[ 51119], 90.00th=[ 69731], 95.00th=[ 85459], | 99.00th=[129500], 99.50th=[160433], 99.90th=[206570], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 7, max= 151, per=25.77%, avg=58.77, stdev=23.93, samples=209 iops : min= 1, max= 37, avg=14.04, stdev= 5.99, samples=209 lat (usec) : 50=0.29%, 100=1.76%, 250=0.20%, 500=0.13%, 1000=0.03% lat (msec) : 2=5.40%, 4=4.69%, 10=7.88%, 20=12.60%, 50=44.21% lat (msec) : 100=20.31%, 250=2.47%, 1000=0.03% cpu : usr=0.09%, sys=5.97%, ctx=6833, 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=179124: Tue Sep 8 10:02:23 2026 read: IOPS=13, BW=55.9KiB/s (57.2kB/s)(6052KiB/108355msec) clat (usec): min=32, max=867600, avg=39281.31, stdev=33271.58 lat (usec): min=32, max=867609, avg=39287.17, stdev=33276.07 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 113], 10.00th=[ 14615], 20.00th=[ 19792], | 30.00th=[ 24773], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 38536], | 70.00th=[ 45351], 80.00th=[ 54264], 90.00th=[ 70779], 95.00th=[ 86508], | 99.00th=[124257], 99.50th=[141558], 99.90th=[246416], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 15, max= 103, per=25.49%, avg=55.57, stdev=19.74, samples=213 iops : min= 3, max= 25, avg=13.24, stdev= 4.92, samples=213 write: IOPS=14, BW=57.6KiB/s (58.9kB/s)(6236KiB/108355msec); 0 zone resets clat (usec): min=1039, max=207322, avg=31063.16, stdev=29946.64 lat (usec): min=1040, max=207324, avg=31066.63, stdev=29945.22 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1516], 10.00th=[ 2343], 20.00th=[ 4686], | 30.00th=[ 8586], 40.00th=[ 16057], 50.00th=[ 22676], 60.00th=[ 30278], | 70.00th=[ 40109], 80.00th=[ 54789], 90.00th=[ 70779], 95.00th=[ 88605], | 99.00th=[131597], 99.50th=[145753], 99.90th=[177210], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 7, max= 150, per=25.04%, avg=57.09, stdev=23.41, samples=213 iops : min= 1, max= 37, avg=13.62, stdev= 5.88, samples=213 lat (usec) : 50=0.26%, 100=2.08%, 250=0.23%, 500=0.03% lat (msec) : 2=4.17%, 4=4.85%, 10=7.71%, 20=13.80%, 50=42.90% lat (msec) : 100=20.77%, 250=3.16%, 1000=0.03% cpu : usr=0.09%, sys=5.80%, ctx=6708, 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=218KiB/s (223kB/s), 53.9KiB/s-56.7KiB/s (55.2kB/s-58.1kB/s), io=23.4MiB (24.6MB), run=106247-110110msec WRITE: bw=228KiB/s (234kB/s), 57.3KiB/s-58.9KiB/s (58.6kB/s-60.3kB/s), io=24.6MiB (25.7MB), run=106247-110110msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179117: Tue Sep 8 10:03:01 2026 read: IOPS=10, BW=40.6KiB/s (41.6kB/s)(5992KiB/147536msec) clat (msec): min=6, max=853, avg=38.21, stdev=38.20 lat (msec): min=6, max=853, avg=38.21, stdev=38.21 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 54], 90.00th=[ 79], 95.00th=[ 103], | 99.00th=[ 155], 99.50th=[ 201], 99.90th=[ 279], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 151, per=25.28%, avg=40.96, stdev=26.54, samples=286 iops : min= 1, max= 37, avg= 9.60, stdev= 6.66, samples=286 write: IOPS=10, BW=42.7KiB/s (43.7kB/s)(6296KiB/147536msec); 0 zone resets clat (msec): min=11, max=275, avg=57.05, stdev=37.96 lat (msec): min=11, max=275, avg=57.05, stdev=37.97 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 67], 80.00th=[ 82], 90.00th=[ 107], 95.00th=[ 133], | 99.00th=[ 192], 99.50th=[ 226], 99.90th=[ 259], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 119, per=25.12%, avg=42.70, stdev=24.07, samples=288 iops : min= 1, max= 29, avg=10.04, stdev= 6.07, samples=288 lat (msec) : 10=2.51%, 20=16.34%, 50=47.56%, 100=24.32%, 250=9.15% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.06%, sys=2.44%, ctx=5105, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179119: Tue Sep 8 10:03:01 2026 read: IOPS=10, BW=40.8KiB/s (41.8kB/s)(5940KiB/145516msec) clat (msec): min=4, max=885, avg=36.99, stdev=38.01 lat (msec): min=4, max=885, avg=37.00, stdev=38.01 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 75], 95.00th=[ 101], | 99.00th=[ 150], 99.50th=[ 186], 99.90th=[ 359], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 120, per=25.33%, avg=41.04, stdev=26.41, samples=283 iops : min= 1, max= 30, avg= 9.61, stdev= 6.64, samples=283 write: IOPS=10, BW=43.6KiB/s (44.7kB/s)(6348KiB/145516msec); 0 zone resets clat (msec): min=10, max=283, avg=56.77, stdev=37.59 lat (msec): min=10, max=283, avg=56.77, stdev=37.59 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 46], 60.00th=[ 54], | 70.00th=[ 66], 80.00th=[ 83], 90.00th=[ 108], 95.00th=[ 129], | 99.00th=[ 186], 99.50th=[ 215], 99.90th=[ 268], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 134, per=25.54%, avg=43.42, stdev=23.49, samples=286 iops : min= 1, max= 33, avg=10.21, stdev= 5.91, samples=286 lat (msec) : 10=2.21%, 20=16.99%, 50=48.11%, 100=23.80%, 250=8.66% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.06%, sys=2.44%, ctx=5076, 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=179122: Tue Sep 8 10:03:01 2026 read: IOPS=10, BW=41.1KiB/s (42.1kB/s)(6028KiB/146788msec) clat (msec): min=5, max=363, avg=38.86, stdev=33.86 lat (msec): min=5, max=363, avg=38.87, stdev=33.86 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 84], 95.00th=[ 112], | 99.00th=[ 163], 99.50th=[ 180], 99.90th=[ 245], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 143, per=25.62%, avg=41.51, stdev=25.41, samples=283 iops : min= 1, max= 35, avg= 9.74, stdev= 6.38, samples=283 write: IOPS=10, BW=42.6KiB/s (43.7kB/s)(6260KiB/146788msec); 0 zone resets clat (msec): min=9, max=903, avg=56.04, stdev=43.16 lat (msec): min=9, max=903, avg=56.04, stdev=43.16 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 64], 80.00th=[ 81], 90.00th=[ 107], 95.00th=[ 130], | 99.00th=[ 197], 99.50th=[ 241], 99.90th=[ 257], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8, max= 112, per=25.05%, avg=42.58, stdev=23.72, samples=286 iops : min= 2, max= 28, avg=10.00, stdev= 5.96, samples=286 lat (msec) : 10=2.44%, 20=16.76%, 50=47.98%, 100=23.37%, 250=9.28% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.07%, sys=2.46%, ctx=5088, 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=179123: Tue Sep 8 10:03:01 2026 read: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6052KiB/146973msec) clat (msec): min=5, max=273, avg=38.94, stdev=33.95 lat (msec): min=5, max=273, avg=38.94, stdev=33.95 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 57], 90.00th=[ 86], 95.00th=[ 110], | 99.00th=[ 161], 99.50th=[ 197], 99.90th=[ 249], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 134, per=26.02%, avg=42.15, stdev=26.51, samples=281 iops : min= 1, max= 33, avg= 9.90, stdev= 6.67, samples=281 write: IOPS=10, BW=42.4KiB/s (43.4kB/s)(6236KiB/146973msec); 0 zone resets clat (msec): min=10, max=881, avg=56.16, stdev=42.53 lat (msec): min=10, max=881, avg=56.16, stdev=42.53 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 81], 90.00th=[ 106], 95.00th=[ 129], | 99.00th=[ 194], 99.50th=[ 222], 99.90th=[ 271], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 119, per=24.83%, avg=42.22, stdev=24.10, samples=289 iops : min= 1, max= 29, avg= 9.91, stdev= 6.06, samples=289 lat (msec) : 10=2.44%, 20=17.15%, 50=47.33%, 100=24.15%, 250=8.79% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.06%, sys=2.32%, ctx=5001, 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=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=163KiB/s (167kB/s), 40.6KiB/s-41.2KiB/s (41.6kB/s-42.2kB/s), io=23.4MiB (24.6MB), run=145516-147536msec WRITE: bw=170KiB/s (174kB/s), 42.4KiB/s-43.6KiB/s (43.4kB/s-44.7kB/s), io=24.6MiB (25.7MB), run=145516-147536msec 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=179179: Tue Sep 8 10:03:41 2026 read: IOPS=11, BW=190KiB/s (194kB/s)(5920KiB/31182msec) clat (usec): min=35, max=176845, avg=43559.11, stdev=28838.14 lat (usec): min=36, max=176846, avg=43562.26, stdev=28838.49 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 75], 10.00th=[ 2671], 20.00th=[ 23200], | 30.00th=[ 27657], 40.00th=[ 32375], 50.00th=[ 38536], 60.00th=[ 44827], | 70.00th=[ 54264], 80.00th=[ 62653], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[123208], 99.50th=[152044], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 31, max= 383, per=24.46%, avg=187.38, stdev=75.82, samples=61 iops : min= 1, max= 23, avg=10.95, stdev= 4.81, samples=61 write: IOPS=12, BW=204KiB/s (209kB/s)(6368KiB/31182msec); 0 zone resets clat (usec): min=1776, max=228575, avg=37778.22, stdev=37372.44 lat (usec): min=1778, max=228576, avg=37780.57, stdev=37372.50 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 3097], 10.00th=[ 3654], 20.00th=[ 6063], | 30.00th=[ 10683], 40.00th=[ 19268], 50.00th=[ 26870], 60.00th=[ 36439], | 70.00th=[ 48497], 80.00th=[ 63177], 90.00th=[ 87557], 95.00th=[113771], | 99.00th=[168821], 99.50th=[214959], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 31, max= 444, per=25.18%, avg=202.95, stdev=81.86, samples=61 iops : min= 1, max= 27, avg=11.95, stdev= 5.19, samples=61 lat (usec) : 50=0.52%, 100=2.60%, 250=1.17%, 500=0.26%, 1000=0.13% lat (msec) : 2=0.78%, 4=5.47%, 10=9.11%, 20=8.72%, 50=39.84% lat (msec) : 100=25.91%, 250=5.47% cpu : usr=0.06%, sys=5.87%, ctx=1788, 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=179180: Tue Sep 8 10:03:41 2026 read: IOPS=11, BW=189KiB/s (193kB/s)(5744KiB/30438msec) clat (usec): min=49, max=224277, avg=45640.98, stdev=31130.82 lat (usec): min=50, max=224278, avg=45642.42, stdev=31131.04 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 73], 10.00th=[ 1352], 20.00th=[ 23987], | 30.00th=[ 29230], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 47449], | 70.00th=[ 54789], 80.00th=[ 65274], 90.00th=[ 78119], 95.00th=[ 94897], | 99.00th=[154141], 99.50th=[223347], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 63, max= 350, per=24.46%, avg=187.38, stdev=68.62, samples=60 iops : min= 3, max= 21, avg=10.97, stdev= 4.36, samples=60 write: IOPS=13, BW=215KiB/s (220kB/s)(6544KiB/30438msec); 0 zone resets clat (usec): min=1632, max=161632, avg=34273.47, stdev=32263.94 lat (usec): min=1635, max=161634, avg=34276.07, stdev=32263.70 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 2573], 10.00th=[ 3916], 20.00th=[ 6915], | 30.00th=[ 10683], 40.00th=[ 15664], 50.00th=[ 23725], 60.00th=[ 33162], | 70.00th=[ 44827], 80.00th=[ 57410], 90.00th=[ 79168], 95.00th=[100140], | 99.00th=[135267], 99.50th=[149947], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 93, max= 479, per=26.57%, avg=214.17, stdev=93.95, samples=60 iops : min= 5, max= 29, avg=12.65, stdev= 5.95, samples=60 lat (usec) : 50=0.13%, 100=3.12%, 250=0.78%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=0.91%, 4=4.69%, 10=9.77%, 20=11.33%, 50=38.02% lat (msec) : 100=26.04%, 250=4.69% cpu : usr=0.07%, sys=6.38%, ctx=1852, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179181: Tue Sep 8 10:03:41 2026 read: IOPS=12, BW=200KiB/s (205kB/s)(6256KiB/31253msec) clat (usec): min=45, max=212035, avg=44269.77, stdev=29537.35 lat (usec): min=46, max=212046, avg=44271.91, stdev=29537.33 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 1549], 20.00th=[ 24249], | 30.00th=[ 28967], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 63177], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[137364], 99.50th=[143655], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 63, max= 416, per=25.85%, avg=198.05, stdev=79.51, samples=61 iops : min= 3, max= 26, avg=11.62, stdev= 5.10, samples=61 write: IOPS=12, BW=193KiB/s (198kB/s)(6032KiB/31253msec); 0 zone resets clat (usec): min=1655, max=217333, avg=36875.12, stdev=34570.05 lat (usec): min=1658, max=217335, avg=36877.41, stdev=34570.11 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2409], 10.00th=[ 3884], 20.00th=[ 6390], | 30.00th=[ 11600], 40.00th=[ 20055], 50.00th=[ 27657], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 62129], 90.00th=[ 85459], 95.00th=[102237], | 99.00th=[168821], 99.50th=[196084], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 31, max= 415, per=23.40%, avg=188.64, stdev=72.73, samples=61 iops : min= 1, max= 25, avg=11.03, stdev= 4.58, samples=61 lat (usec) : 50=0.39%, 100=3.91%, 250=0.65%, 500=0.13% lat (msec) : 2=1.04%, 4=4.56%, 10=8.33%, 20=7.68%, 50=41.28% lat (msec) : 100=27.08%, 250=4.95% cpu : usr=0.06%, sys=5.97%, ctx=1858, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179182: Tue Sep 8 10:03:41 2026 read: IOPS=12, BW=198KiB/s (203kB/s)(6032KiB/30449msec) clat (usec): min=44, max=187277, avg=42861.54, stdev=29120.14 lat (usec): min=44, max=187279, avg=42865.43, stdev=29119.49 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 65], 10.00th=[ 122], 20.00th=[ 21103], | 30.00th=[ 28181], 40.00th=[ 33817], 50.00th=[ 38536], 60.00th=[ 45876], | 70.00th=[ 54789], 80.00th=[ 63177], 90.00th=[ 80217], 95.00th=[ 95945], | 99.00th=[135267], 99.50th=[156238], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 31, max= 442, per=25.63%, avg=196.33, stdev=78.14, samples=60 iops : min= 1, max= 27, avg=11.53, stdev= 4.98, samples=60 write: IOPS=12, BW=205KiB/s (210kB/s)(6256KiB/30449msec); 0 zone resets clat (usec): min=1792, max=172089, avg=36412.59, stdev=34035.52 lat (usec): min=1793, max=172092, avg=36417.60, stdev=34042.68 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 2933], 10.00th=[ 3949], 20.00th=[ 7046], | 30.00th=[ 12387], 40.00th=[ 18482], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 61080], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[143655], 99.50th=[168821], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 92, max= 441, per=25.42%, avg=204.85, stdev=79.11, samples=60 iops : min= 5, max= 27, avg=12.07, stdev= 4.99, samples=60 lat (usec) : 50=0.13%, 100=4.43%, 250=1.17%, 500=0.13%, 1000=0.26% lat (msec) : 2=0.78%, 4=4.56%, 10=7.94%, 20=11.98%, 50=37.11% lat (msec) : 100=25.78%, 250=5.73% cpu : usr=0.08%, sys=6.33%, ctx=1831, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=766KiB/s (785kB/s), 189KiB/s-200KiB/s (193kB/s-205kB/s), io=23.4MiB (24.5MB), run=30438-31253msec WRITE: bw=806KiB/s (826kB/s), 193KiB/s-215KiB/s (198kB/s-220kB/s), io=24.6MiB (25.8MB), run=30438-31253msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179174: Tue Sep 8 10:03:54 2026 read: IOPS=8, BW=132KiB/s (135kB/s)(5920KiB/44791msec) clat (msec): min=9, max=286, avg=47.54, stdev=36.56 lat (msec): min=9, max=286, avg=47.54, stdev=36.56 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 51], 80.00th=[ 65], 90.00th=[ 93], 95.00th=[ 128], | 99.00th=[ 171], 99.50th=[ 199], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 319, per=25.53%, avg=135.29, stdev=67.87, samples=85 iops : min= 1, max= 19, avg= 7.64, stdev= 4.25, samples=85 write: IOPS=8, BW=142KiB/s (146kB/s)(6368KiB/44791msec); 0 zone resets clat (msec): min=14, max=327, avg=67.98, stdev=42.31 lat (msec): min=14, max=327, avg=68.00, stdev=42.32 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 57], 60.00th=[ 67], | 70.00th=[ 78], 80.00th=[ 93], 90.00th=[ 124], 95.00th=[ 157], | 99.00th=[ 199], 99.50th=[ 279], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 383, per=25.58%, avg=142.75, stdev=65.97, samples=87 iops : min= 1, max= 23, avg= 8.10, stdev= 4.19, samples=87 lat (msec) : 10=0.39%, 20=7.03%, 50=47.92%, 100=31.38%, 250=12.89% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=2.27%, ctx=1312, 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=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=179175: Tue Sep 8 10:03:54 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5744KiB/45126msec) clat (msec): min=8, max=219, avg=46.74, stdev=34.54 lat (msec): min=8, max=219, avg=46.74, stdev=34.54 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 97], 95.00th=[ 120], | 99.00th=[ 188], 99.50th=[ 220], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 31, max= 383, per=24.60%, avg=130.37, stdev=75.72, samples=86 iops : min= 1, max= 23, avg= 7.31, stdev= 4.78, samples=86 write: IOPS=9, BW=145KiB/s (148kB/s)(6544KiB/45126msec); 0 zone resets clat (msec): min=12, max=318, avg=69.11, stdev=43.61 lat (msec): min=12, max=318, avg=69.13, stdev=43.60 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 59], 60.00th=[ 67], | 70.00th=[ 82], 80.00th=[ 100], 90.00th=[ 129], 95.00th=[ 157], | 99.00th=[ 230], 99.50th=[ 251], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 447, per=25.77%, avg=143.78, stdev=73.36, samples=89 iops : min= 1, max= 27, avg= 8.16, stdev= 4.62, samples=89 lat (msec) : 10=0.78%, 20=6.38%, 50=48.70%, 100=29.69%, 250=14.06% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=2.17%, ctx=1301, 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=179176: Tue Sep 8 10:03:54 2026 read: IOPS=8, BW=142KiB/s (145kB/s)(6256KiB/44058msec) clat (msec): min=9, max=225, avg=47.18, stdev=35.49 lat (msec): min=9, max=225, avg=47.20, stdev=35.49 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 52], 80.00th=[ 64], 90.00th=[ 94], 95.00th=[ 122], | 99.00th=[ 197], 99.50th=[ 220], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 31, max= 349, per=26.78%, avg=141.93, stdev=79.84, samples=87 iops : min= 1, max= 21, avg= 8.06, stdev= 5.04, samples=87 write: IOPS=8, BW=137KiB/s (140kB/s)(6032KiB/44058msec); 0 zone resets clat (msec): min=15, max=250, avg=67.41, stdev=41.56 lat (msec): min=15, max=250, avg=67.42, stdev=41.56 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 64], | 70.00th=[ 77], 80.00th=[ 99], 90.00th=[ 131], 95.00th=[ 144], | 99.00th=[ 222], 99.50th=[ 243], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 31, max= 349, per=24.34%, avg=135.80, stdev=63.86, samples=87 iops : min= 1, max= 21, avg= 7.67, stdev= 4.05, samples=87 lat (msec) : 10=0.13%, 20=8.72%, 50=47.40%, 100=29.82%, 250=13.80% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.28%, ctx=1347, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179177: Tue Sep 8 10:03:54 2026 read: IOPS=8, BW=137KiB/s (140kB/s)(6032KiB/43969msec) clat (msec): min=7, max=243, avg=47.94, stdev=35.36 lat (msec): min=7, max=243, avg=47.95, stdev=35.36 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 51], 80.00th=[ 64], 90.00th=[ 93], 95.00th=[ 134], | 99.00th=[ 197], 99.50th=[ 209], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 380, per=25.86%, avg=137.06, stdev=73.66, samples=85 iops : min= 1, max= 23, avg= 7.75, stdev= 4.65, samples=85 write: IOPS=8, BW=142KiB/s (146kB/s)(6256KiB/43969msec); 0 zone resets clat (msec): min=15, max=227, avg=65.79, stdev=36.55 lat (msec): min=15, max=227, avg=65.79, stdev=36.55 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 65], | 70.00th=[ 80], 80.00th=[ 96], 90.00th=[ 120], 95.00th=[ 136], | 99.00th=[ 186], 99.50th=[ 192], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 315, per=25.88%, avg=144.40, stdev=63.73, samples=84 iops : min= 1, max= 19, avg= 8.21, stdev= 4.02, samples=84 lat (msec) : 10=0.26%, 20=6.38%, 50=49.48%, 100=30.47%, 250=13.41% cpu : usr=0.06%, sys=2.21%, ctx=1300, 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=531KiB/s (544kB/s), 127KiB/s-142KiB/s (130kB/s-145kB/s), io=23.4MiB (24.5MB), run=43969-45126msec WRITE: bw=558KiB/s (572kB/s), 137KiB/s-145KiB/s (140kB/s-148kB/s), io=24.6MiB (25.8MB), run=43969-45126msec 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=179195: Tue Sep 8 10:04:11 2026 read: IOPS=1, BW=1242KiB/s (1272kB/s)(7168KiB/5770msec) clat (msec): min=71, max=1608, avg=341.06, stdev=559.85 lat (msec): min=71, max=1608, avg=341.06, stdev=559.85 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 110], | 30.00th=[ 128], 40.00th=[ 128], 50.00th=[ 138], 60.00th=[ 159], | 70.00th=[ 159], 80.00th=[ 176], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 1815, max= 4530, per=86.18%, avg=2788.00, stdev=1512.06, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=0, BW=887KiB/s (909kB/s)(5120KiB/5770msec); 0 zone resets clat (msec): min=105, max=2558, avg=671.16, stdev=1060.86 lat (msec): min=105, max=2558, avg=671.34, stdev=1060.82 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 106], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 165], 60.00th=[ 165], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 1510, max= 6144, per=84.50%, avg=3827.00, stdev=3276.73, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (msec) : 100=8.33%, 250=66.67%, 500=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.09%, sys=3.00%, ctx=95, 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=179196: Tue Sep 8 10:04:11 2026 read: IOPS=0, BW=324KiB/s (331kB/s)(2048KiB/6330msec) clat (msec): min=117, max=322, avg=220.15, stdev=144.56 lat (msec): min=117, max=322, avg=220.15, stdev=144.56 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 118], | 30.00th=[ 118], 40.00th=[ 118], 50.00th=[ 118], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 1469, max= 1815, per=50.76%, avg=1642.00, stdev=244.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1618KiB/s (1657kB/s)(10.0MiB/6330msec); 0 zone resets clat (msec): min=143, max=2576, avg=572.22, stdev=731.14 lat (msec): min=143, max=2576, avg=572.32, stdev=731.12 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 165], | 30.00th=[ 194], 40.00th=[ 245], 50.00th=[ 266], 60.00th=[ 275], | 70.00th=[ 592], 80.00th=[ 600], 90.00th=[ 659], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 1935, max= 4079, per=53.92%, avg=2442.00, stdev=800.46, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.76, samples=7 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, >=2000=8.33% cpu : usr=0.06%, sys=5.17%, ctx=219, 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=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=179197: Tue Sep 8 10:04:11 2026 read: IOPS=1, BW=1080KiB/s (1106kB/s)(6144KiB/5691msec) clat (msec): min=84, max=1350, avg=484.68, stdev=487.23 lat (msec): min=84, max=1350, avg=484.68, stdev=487.23 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 115], | 30.00th=[ 115], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 430], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 2048, max= 4087, per=100.00%, avg=3335.33, stdev=1120.08, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=1, BW=1080KiB/s (1106kB/s)(6144KiB/5691msec); 0 zone resets clat (msec): min=161, max=1170, avg=437.23, stdev=381.75 lat (msec): min=161, max=1170, avg=437.32, stdev=381.73 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 435], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 2019, max= 3070, per=50.59%, avg=2291.00, stdev=519.48, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 2000=16.67% cpu : usr=0.05%, sys=3.11%, ctx=84, 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=179198: Tue Sep 8 10:04:11 2026 read: IOPS=0, BW=838KiB/s (858kB/s)(5120KiB/6113msec) clat (msec): min=93, max=2613, avg=806.67, stdev=1065.23 lat (msec): min=93, max=2613, avg=806.67, stdev=1065.23 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 94], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 1815, max= 4096, per=80.84%, avg=2615.33, stdev=1283.70, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1173KiB/s (1201kB/s)(7168KiB/6113msec); 0 zone resets clat (msec): min=149, max=479, avg=276.54, stdev=128.53 lat (msec): min=149, max=479, avg=276.75, stdev=128.62 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 167], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 218], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 376], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 3308, max= 4096, per=84.22%, avg=3814.33, stdev=439.42, samples=3 iops : min= 3, max= 4, avg= 3.33, stdev= 0.58, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.88%, ctx=84, 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=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=3235KiB/s (3313kB/s), 324KiB/s-1242KiB/s (331kB/s-1272kB/s), io=20.0MiB (20.0MB), run=5691-6330msec WRITE: bw=4530KiB/s (4638kB/s), 887KiB/s-1618KiB/s (909kB/s-1657kB/s), io=28.0MiB (29.4MB), run=5691-6330msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179200: Tue Sep 8 10:04:11 2026 read: IOPS=2, BW=2579KiB/s (2641kB/s)(7168KiB/2779msec) clat (usec): min=573, max=405705, avg=186772.35, stdev=148098.65 lat (usec): min=574, max=405707, avg=186774.05, stdev=148098.77 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[ 4948], | 30.00th=[137364], 40.00th=[137364], 50.00th=[242222], 60.00th=[250610], | 70.00th=[250610], 80.00th=[265290], 90.00th=[404751], 95.00th=[404751], | 99.00th=[404751], 99.50th=[404751], 99.90th=[404751], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 2011, max= 4326, per=97.06%, avg=3461.33, stdev=1263.75, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1842KiB/s (1887kB/s)(5120KiB/2779msec); 0 zone resets clat (msec): min=131, max=441, avg=292.65, stdev=130.06 lat (msec): min=131, max=441, avg=292.76, stdev=130.03 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 249], 60.00th=[ 249], | 70.00th=[ 409], 80.00th=[ 409], 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= 2011, max= 4023, per=53.76%, avg=2684.33, stdev=1159.33, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=41.67%, 500=41.67% cpu : usr=0.00%, sys=19.40%, ctx=183, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179201: Tue Sep 8 10:04:11 2026 read: IOPS=0, BW=357KiB/s (365kB/s)(2048KiB/5742msec) clat (usec): min=608, max=180792, avg=90700.31, stdev=127409.01 lat (usec): min=610, max=180794, avg=90702.16, stdev=127409.47 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[ 611], | 30.00th=[ 611], 40.00th=[ 611], 50.00th=[ 611], 60.00th=[181404], | 70.00th=[181404], 80.00th=[181404], 90.00th=[181404], 95.00th=[181404], | 99.00th=[181404], 99.50th=[181404], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 1542, max= 2011, per=49.82%, avg=1776.50, stdev=331.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1783KiB/s (1826kB/s)(10.0MiB/5742msec); 0 zone resets clat (msec): min=105, max=2624, avg=555.55, stdev=751.81 lat (msec): min=105, max=2624, avg=555.69, stdev=751.76 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 186], | 30.00th=[ 197], 40.00th=[ 199], 50.00th=[ 224], 60.00th=[ 368], | 70.00th=[ 397], 80.00th=[ 510], 90.00th=[ 751], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 2027, max= 6059, per=72.70%, avg=3629.80, stdev=1677.64, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.48, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=16.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=12.58%, ctx=234, 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=179202: Tue Sep 8 10:04:11 2026 read: IOPS=1, BW=1329KiB/s (1361kB/s)(6144KiB/4622msec) clat (msec): min=2, max=317, avg=150.55, stdev=139.71 lat (msec): min=2, max=317, avg=150.55, stdev=139.71 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 3], 40.00th=[ 84], 50.00th=[ 84], 60.00th=[ 220], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 2011, max= 4047, per=94.23%, avg=3360.33, stdev=1168.62, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1329KiB/s (1361kB/s)(6144KiB/4622msec); 0 zone resets clat (msec): min=120, max=1823, avg=619.16, stdev=621.57 lat (msec): min=121, max=1823, avg=619.40, stdev=621.52 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 567], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 2011, max= 3121, per=45.87%, avg=2290.50, stdev=553.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 4=16.67%, 100=8.33%, 250=25.00%, 500=25.00%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.62%, 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=179203: Tue Sep 8 10:04:11 2026 read: IOPS=1, BW=1064KiB/s (1090kB/s)(5120KiB/4810msec) clat (usec): min=823, max=1906.5k, avg=504545.31, stdev=790340.52 lat (usec): min=824, max=1906.5k, avg=504546.91, stdev=790340.59 clat percentiles (usec): | 1.00th=[ 824], 5.00th=[ 824], 10.00th=[ 824], | 20.00th=[ 824], 30.00th=[ 127402], 40.00th=[ 127402], | 50.00th=[ 217056], 60.00th=[ 217056], 70.00th=[ 270533], | 80.00th=[ 270533], 90.00th=[1904215], 95.00th=[1904215], | 99.00th=[1904215], 99.50th=[1904215], 99.90th=[1904215], | 99.95th=[1904215], 99.99th=[1904215] bw ( KiB/s): min= 4023, max= 4079, per=100.00%, avg=4051.00, stdev=39.60, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1490KiB/s (1526kB/s)(7168KiB/4810msec); 0 zone resets clat (msec): min=115, max=640, avg=326.35, stdev=191.38 lat (msec): min=115, max=640, avg=326.53, stdev=191.40 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 142], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 321], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 498], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1499, max= 4096, per=58.39%, avg=2915.25, stdev=1352.04, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (usec) : 1000=8.33% lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=12.87%, ctx=465, 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=3567KiB/s (3652kB/s), 357KiB/s-2579KiB/s (365kB/s-2641kB/s), io=20.0MiB (20.0MB), run=2779-5742msec WRITE: bw=4993KiB/s (5113kB/s), 1329KiB/s-1842KiB/s (1361kB/s-1887kB/s), io=28.0MiB (29.4MB), run=2779-5742msec 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=179214: Tue Sep 8 10:04:25 2026 read: IOPS=1, BW=4393KiB/s (4499kB/s)(12.0MiB/2797msec) clat (msec): min=688, max=1204, avg=902.46, stdev=269.25 lat (msec): min=688, max=1204, avg=902.46, stdev=269.25 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8047, max= 8175, per=100.00%, avg=8111.00, stdev=90.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=16.20%, ctx=439, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179215: Tue Sep 8 10:04:25 2026 read: IOPS=0, BW=1343KiB/s (1376kB/s)(4096KiB/3049msec) clat (nsec): min=710256k, max=710256k, avg=710255869.00, stdev= 0.00 lat (nsec): min=710267k, max=710267k, avg=710267401.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2687KiB/s (2751kB/s)(8192KiB/3049msec); 0 zone resets clat (msec): min=1120, max=1134, avg=1127.78, stdev= 9.65 lat (msec): min=1121, max=1135, avg=1128.32, stdev= 9.45 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1133], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7953, max= 7953, per=74.71%, avg=7953.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.10%, ctx=155, 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=179216: Tue Sep 8 10:04:25 2026 write: IOPS=0, BW=3992KiB/s (4088kB/s)(12.0MiB/3078msec); 0 zone resets clat (msec): min=463, max=1747, avg=979.22, stdev=678.03 lat (msec): min=464, max=1747, avg=979.60, stdev=677.94 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7953, max= 8175, per=75.75%, avg=8064.00, stdev=156.98, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.25%, ctx=63, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179217: Tue Sep 8 10:04:25 2026 write: IOPS=1, BW=5107KiB/s (5230kB/s)(12.0MiB/2406msec); 0 zone resets clat (msec): min=615, max=883, avg=783.29, stdev=146.32 lat (msec): min=615, max=885, avg=784.17, stdev=146.77 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 8047, max= 8094, per=75.81%, avg=8070.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=3.28%, ctx=49, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5374KiB/s (5503kB/s), 1343KiB/s-4393KiB/s (1376kB/s-4499kB/s), io=16.0MiB (16.8MB), run=2797-3049msec WRITE: bw=10.4MiB/s (10.9MB/s), 2687KiB/s-5107KiB/s (2751kB/s-5230kB/s), io=32.0MiB (33.6MB), run=2406-3078msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179210: Tue Sep 8 10:04:25 2026 read: IOPS=1, BW=7974KiB/s (8165kB/s)(12.0MiB/1541msec) clat (msec): min=296, max=641, avg=474.23, stdev=172.30 lat (msec): min=296, max=641, avg=474.23, stdev=172.30 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 485], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 7198, max= 8143, per=100.00%, avg=7670.50, stdev=668.22, 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=6.30%, ctx=60, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179211: Tue Sep 8 10:04:25 2026 read: IOPS=0, BW=1102KiB/s (1128kB/s)(4096KiB/3718msec) clat (nsec): min=1664.5M, max=1664.5M, avg=1664477270.00, stdev= 0.00 lat (nsec): min=1664.5M, max=1664.5M, avg=1664481127.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1670], 5.00th=[ 1670], 10.00th=[ 1670], 20.00th=[ 1670], | 30.00th=[ 1670], 40.00th=[ 1670], 50.00th=[ 1670], 60.00th=[ 1670], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2203KiB/s (2256kB/s)(8192KiB/3718msec); 0 zone resets clat (msec): min=651, max=1276, avg=963.85, stdev=441.51 lat (msec): min=652, max=1276, avg=964.45, stdev=441.63 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=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8159, max= 8159, per=92.58%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.13%, sys=3.31%, ctx=43, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179212: Tue Sep 8 10:04:25 2026 write: IOPS=0, BW=3367KiB/s (3447kB/s)(12.0MiB/3650msec); 0 zone resets clat (msec): min=974, max=1342, avg=1174.09, stdev=186.33 lat (msec): min=974, max=1343, avg=1174.50, stdev=186.49 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7699, max= 8175, per=90.06%, avg=7937.00, stdev=336.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.08%, sys=7.56%, ctx=120, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179213: Tue Sep 8 10:04:25 2026 write: IOPS=1, BW=4842KiB/s (4958kB/s)(12.0MiB/2538msec); 0 zone resets clat (msec): min=270, max=1237, avg=784.39, stdev=486.37 lat (msec): min=271, max=1238, avg=784.87, stdev=486.24 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 6907, max= 7699, per=82.87%, avg=7303.00, stdev=560.03, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.56%, ctx=103, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4407KiB/s (4512kB/s), 1102KiB/s-7974KiB/s (1128kB/s-8165kB/s), io=16.0MiB (16.8MB), run=1541-3718msec WRITE: bw=8813KiB/s (9025kB/s), 2203KiB/s-4842KiB/s (2256kB/s-4958kB/s), io=32.0MiB (33.6MB), run=2538-3718msec