== sanity test 398b: DIO and buffer IO race ============== 01:38:15 (1789450695) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.06534 s, 6.2 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=179362: Tue Sep 15 01:40:30 2026 read: IOPS=13, BW=52.3KiB/s (53.6kB/s)(5992KiB/114538msec) clat (usec): min=45, max=967125, avg=41701.95, stdev=35571.47 lat (usec): min=45, max=967126, avg=41703.18, stdev=35571.47 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 11469], 10.00th=[ 15664], 20.00th=[ 21365], | 30.00th=[ 25297], 40.00th=[ 30278], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 49021], 80.00th=[ 58459], 90.00th=[ 76022], 95.00th=[ 88605], | 99.00th=[132645], 99.50th=[158335], 99.90th=[225444], 99.95th=[968885], | 99.99th=[968885] bw ( KiB/s): min= 7, max= 119, per=24.85%, avg=51.93, stdev=18.60, samples=225 iops : min= 1, max= 29, avg=12.33, stdev= 4.69, samples=225 write: IOPS=13, BW=54.0KiB/s (56.3kB/s)(6296KiB/114538msec); 0 zone resets clat (usec): min=980, max=254469, avg=32801.11, stdev=32651.65 lat (usec): min=981, max=254469, avg=32805.37, stdev=32652.35 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1270], 10.00th=[ 1860], 20.00th=[ 4047], | 30.00th=[ 7767], 40.00th=[ 16319], 50.00th=[ 24773], 60.00th=[ 32113], | 70.00th=[ 43254], 80.00th=[ 56886], 90.00th=[ 77071], 95.00th=[ 98042], | 99.00th=[139461], 99.50th=[160433], 99.90th=[208667], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 7, max= 135, per=24.93%, avg=54.60, stdev=22.59, samples=225 iops : min= 1, max= 33, avg=13.00, stdev= 5.66, samples=225 lat (usec) : 50=0.16%, 100=1.37%, 250=0.16%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.53%, 4=4.69%, 10=7.36%, 20=11.56%, 50=42.48% lat (msec) : 100=22.66%, 250=3.81%, 500=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.63%, ctx=6796, 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=179363: Tue Sep 15 01:40:30 2026 read: IOPS=13, BW=53.2KiB/s (54.5kB/s)(5940KiB/111612msec) clat (usec): min=41, max=952923, avg=41244.04, stdev=35572.66 lat (usec): min=41, max=952925, avg=41245.32, stdev=35572.70 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11338], 10.00th=[ 16188], 20.00th=[ 20841], | 30.00th=[ 25560], 40.00th=[ 29754], 50.00th=[ 34866], 60.00th=[ 40109], | 70.00th=[ 47449], 80.00th=[ 56886], 90.00th=[ 72877], 95.00th=[ 88605], | 99.00th=[147850], 99.50th=[164627], 99.90th=[204473], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 15, max= 102, per=25.34%, avg=52.96, stdev=19.06, samples=219 iops : min= 3, max= 25, avg=12.58, stdev= 4.78, samples=219 write: IOPS=14, BW=56.9KiB/s (58.2kB/s)(6348KiB/111612msec); 0 zone resets clat (usec): min=993, max=228063, avg=31461.72, stdev=33169.80 lat (usec): min=994, max=228064, avg=31467.86, stdev=33169.54 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1287], 10.00th=[ 1811], 20.00th=[ 3523], | 30.00th=[ 6652], 40.00th=[ 13829], 50.00th=[ 22152], 60.00th=[ 30016], | 70.00th=[ 39584], 80.00th=[ 53740], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[143655], 99.50th=[175113], 99.90th=[225444], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 143, per=25.75%, avg=56.40, stdev=24.76, samples=219 iops : min= 1, max= 35, avg=13.45, stdev= 6.24, samples=219 lat (usec) : 50=0.26%, 100=1.17%, 250=0.10%, 750=0.03%, 1000=0.03% lat (msec) : 2=6.09%, 4=5.34%, 10=7.45%, 20=12.73%, 50=42.19% lat (msec) : 100=20.77%, 250=3.81%, 1000=0.03% cpu : usr=0.08%, sys=5.55%, ctx=6504, 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=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=179364: Tue Sep 15 01:40:30 2026 read: IOPS=13, BW=52.7KiB/s (53.9kB/s)(6028KiB/114489msec) clat (usec): min=35, max=955368, avg=42154.95, stdev=36229.44 lat (usec): min=36, max=955369, avg=42158.19, stdev=36227.94 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 9503], 10.00th=[ 15401], 20.00th=[ 20841], | 30.00th=[ 25035], 40.00th=[ 30278], 50.00th=[ 36439], 60.00th=[ 41681], | 70.00th=[ 47973], 80.00th=[ 60031], 90.00th=[ 78119], 95.00th=[ 94897], | 99.00th=[137364], 99.50th=[154141], 99.90th=[221250], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 127, per=25.00%, avg=52.24, stdev=20.29, samples=225 iops : min= 1, max= 31, avg=12.40, stdev= 5.11, samples=225 write: IOPS=13, BW=54.7KiB/s (55.0kB/s)(6260KiB/114489msec); 0 zone resets clat (usec): min=929, max=226413, avg=32279.99, stdev=33728.64 lat (usec): min=931, max=226414, avg=32284.07, stdev=33729.28 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1270], 10.00th=[ 1745], 20.00th=[ 3425], | 30.00th=[ 6259], 40.00th=[ 13698], 50.00th=[ 22938], 60.00th=[ 30802], | 70.00th=[ 41681], 80.00th=[ 55837], 90.00th=[ 79168], 95.00th=[ 99091], | 99.00th=[147850], 99.50th=[177210], 99.90th=[214959], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 7, max= 127, per=24.78%, avg=54.26, stdev=23.74, samples=225 iops : min= 1, max= 31, avg=12.92, stdev= 5.97, samples=225 lat (usec) : 50=0.20%, 100=1.60%, 250=0.20%, 750=0.03%, 1000=0.07% lat (msec) : 2=5.79%, 4=5.73%, 10=7.03%, 20=11.91%, 50=41.57% lat (msec) : 100=21.58%, 250=4.26%, 1000=0.03% cpu : usr=0.08%, sys=5.55%, ctx=6690, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179365: Tue Sep 15 01:40:30 2026 read: IOPS=13, BW=53.4KiB/s (54.7kB/s)(6052KiB/113298msec) clat (usec): min=32, max=1021.7k, avg=41660.29, stdev=36550.46 lat (usec): min=33, max=1021.7k, avg=41663.40, stdev=36549.46 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10683], 10.00th=[ 15795], | 20.00th=[ 21627], 30.00th=[ 25560], 40.00th=[ 30540], | 50.00th=[ 35390], 60.00th=[ 41157], 70.00th=[ 47973], | 80.00th=[ 57410], 90.00th=[ 72877], 95.00th=[ 92799], | 99.00th=[ 129500], 99.50th=[ 160433], 99.90th=[ 233833], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 7, max= 127, per=25.26%, avg=52.78, stdev=20.88, samples=222 iops : min= 1, max= 31, avg=12.55, stdev= 5.23, samples=222 write: IOPS=13, BW=55.0KiB/s (56.4kB/s)(6236KiB/113298msec); 0 zone resets clat (usec): min=922, max=232618, avg=31939.80, stdev=33303.98 lat (usec): min=923, max=232620, avg=31949.04, stdev=33309.34 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1237], 10.00th=[ 1844], 20.00th=[ 3916], | 30.00th=[ 7046], 40.00th=[ 14746], 50.00th=[ 22938], 60.00th=[ 30278], | 70.00th=[ 40109], 80.00th=[ 53216], 90.00th=[ 78119], 95.00th=[ 99091], | 99.00th=[147850], 99.50th=[168821], 99.90th=[198181], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 7, max= 142, per=24.89%, avg=54.51, stdev=21.63, samples=222 iops : min= 1, max= 35, avg=12.98, stdev= 5.43, samples=222 lat (usec) : 50=0.20%, 100=1.24%, 250=0.29%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=5.73%, 4=4.65%, 10=7.23%, 20=12.14%, 50=43.23% lat (msec) : 100=20.83%, 250=4.20%, 2000=0.03% cpu : usr=0.09%, sys=5.72%, ctx=6673, 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=210KiB/s (215kB/s), 52.3KiB/s-53.4KiB/s (53.6kB/s-54.7kB/s), io=23.4MiB (24.6MB), run=111612-114538msec WRITE: bw=219KiB/s (225kB/s), 54.7KiB/s-56.9KiB/s (55.0kB/s-58.2kB/s), io=24.6MiB (25.7MB), run=111612-114538msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179368: Tue Sep 15 01:41:04 2026 read: IOPS=10, BW=40.5KiB/s (41.5kB/s)(5992KiB/147805msec) clat (msec): min=4, max=1078, avg=38.90, stdev=45.01 lat (msec): min=4, max=1078, avg=38.90, stdev=45.01 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 30], | 70.00th=[ 41], 80.00th=[ 58], 90.00th=[ 89], 95.00th=[ 114], | 99.00th=[ 178], 99.50th=[ 205], 99.90th=[ 309], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 143, per=25.22%, avg=40.86, stdev=29.45, samples=285 iops : min= 1, max= 35, avg= 9.56, stdev= 7.41, samples=285 write: IOPS=10, BW=42.6KiB/s (43.6kB/s)(6296KiB/147805msec); 0 zone resets clat (msec): min=11, max=289, avg=56.81, stdev=40.38 lat (msec): min=11, max=289, avg=56.81, stdev=40.38 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 52], | 70.00th=[ 67], 80.00th=[ 85], 90.00th=[ 112], 95.00th=[ 136], | 99.00th=[ 194], 99.50th=[ 222], 99.90th=[ 271], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 136, per=25.10%, avg=42.41, stdev=27.65, samples=289 iops : min= 1, max= 34, avg= 9.95, stdev= 6.96, samples=289 lat (msec) : 10=3.45%, 20=19.66%, 50=43.91%, 100=22.27%, 250=10.55% lat (msec) : 500=0.13%, 2000=0.03% cpu : usr=0.07%, sys=1.87%, ctx=4813, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179369: Tue Sep 15 01:41:04 2026 read: IOPS=10, BW=40.1KiB/s (41.0kB/s)(5940KiB/148176msec) clat (msec): min=5, max=1010, avg=38.26, stdev=43.20 lat (msec): min=5, max=1010, avg=38.26, stdev=43.20 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 59], 90.00th=[ 89], 95.00th=[ 116], | 99.00th=[ 178], 99.50th=[ 194], 99.90th=[ 251], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 159, per=24.89%, avg=40.32, stdev=29.43, samples=287 iops : min= 1, max= 39, avg= 9.43, stdev= 7.39, samples=287 write: IOPS=10, BW=42.8KiB/s (43.9kB/s)(6348KiB/148176msec); 0 zone resets clat (msec): min=9, max=305, avg=57.49, stdev=41.15 lat (msec): min=9, max=305, avg=57.49, stdev=41.15 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 52], | 70.00th=[ 67], 80.00th=[ 86], 90.00th=[ 113], 95.00th=[ 138], | 99.00th=[ 209], 99.50th=[ 241], 99.90th=[ 275], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 7, max= 120, per=25.09%, avg=42.41, stdev=27.06, samples=291 iops : min= 1, max= 30, avg= 9.95, stdev= 6.81, samples=291 lat (msec) : 10=3.65%, 20=19.40%, 50=44.43%, 100=21.45%, 250=10.87% lat (msec) : 500=0.16%, 2000=0.03% cpu : usr=0.06%, sys=1.89%, ctx=4818, 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=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=179370: Tue Sep 15 01:41:04 2026 read: IOPS=10, BW=40.7KiB/s (41.6kB/s)(6028KiB/148221msec) clat (msec): min=5, max=304, avg=38.89, stdev=38.14 lat (msec): min=5, max=304, avg=38.89, stdev=38.14 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 57], 90.00th=[ 87], 95.00th=[ 122], | 99.00th=[ 188], 99.50th=[ 211], 99.90th=[ 251], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 7, max= 143, per=25.31%, avg=41.01, stdev=28.78, samples=286 iops : min= 1, max= 35, avg= 9.60, stdev= 7.23, samples=286 write: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6260KiB/148221msec); 0 zone resets clat (msec): min=9, max=1040, avg=57.19, stdev=48.76 lat (msec): min=9, max=1040, avg=57.20, stdev=48.76 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 51], | 70.00th=[ 66], 80.00th=[ 85], 90.00th=[ 115], 95.00th=[ 140], | 99.00th=[ 215], 99.50th=[ 243], 99.90th=[ 292], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 127, per=25.09%, avg=42.40, stdev=28.62, samples=287 iops : min= 1, max= 31, avg= 9.94, stdev= 7.21, samples=287 lat (msec) : 10=4.04%, 20=19.50%, 50=44.24%, 100=21.22%, 250=10.74% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.07%, sys=1.91%, ctx=4857, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179371: Tue Sep 15 01:41:04 2026 read: IOPS=10, BW=40.9KiB/s (41.8kB/s)(6052KiB/148134msec) clat (msec): min=5, max=320, avg=38.23, stdev=35.91 lat (msec): min=5, max=320, avg=38.23, stdev=35.91 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 57], 90.00th=[ 87], 95.00th=[ 116], | 99.00th=[ 169], 99.50th=[ 201], 99.90th=[ 218], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 7, max= 159, per=25.64%, avg=41.54, stdev=29.17, samples=284 iops : min= 1, max= 39, avg= 9.73, stdev= 7.32, samples=284 write: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6236KiB/148134msec); 0 zone resets clat (msec): min=9, max=1040, avg=57.86, stdev=47.19 lat (msec): min=9, max=1040, avg=57.86, stdev=47.19 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 87], 90.00th=[ 117], 95.00th=[ 142], | 99.00th=[ 192], 99.50th=[ 213], 99.90th=[ 292], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 127, per=24.66%, avg=41.67, stdev=26.83, samples=291 iops : min= 1, max= 31, avg= 9.76, stdev= 6.76, samples=291 lat (msec) : 10=2.70%, 20=20.08%, 50=44.66%, 100=21.09%, 250=11.33% lat (msec) : 500=0.10%, 2000=0.03% cpu : usr=0.06%, sys=1.91%, ctx=4797, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=162KiB/s (166kB/s), 40.1KiB/s-40.9KiB/s (41.0kB/s-41.8kB/s), io=23.4MiB (24.6MB), run=147805-148221msec WRITE: bw=170KiB/s (174kB/s), 42.1KiB/s-42.8KiB/s (43.1kB/s-43.9kB/s), io=24.6MiB (25.7MB), run=147805-148221msec 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=179410: Tue Sep 15 01:41:39 2026 read: IOPS=14, BW=233KiB/s (239kB/s)(5920KiB/25369msec) clat (usec): min=31, max=156419, avg=36356.97, stdev=24621.99 lat (usec): min=31, max=156420, avg=36358.18, stdev=24622.06 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 65], 10.00th=[ 1565], 20.00th=[ 18482], | 30.00th=[ 22938], 40.00th=[ 28443], 50.00th=[ 33424], 60.00th=[ 38536], | 70.00th=[ 44303], 80.00th=[ 53216], 90.00th=[ 62653], 95.00th=[ 78119], | 99.00th=[126354], 99.50th=[145753], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 63, max= 573, per=24.79%, avg=232.74, stdev=86.80, samples=50 iops : min= 3, max= 35, avg=13.84, stdev= 5.44, samples=50 write: IOPS=15, BW=251KiB/s (257kB/s)(6368KiB/25369msec); 0 zone resets clat (usec): min=1712, max=168299, avg=29494.54, stdev=28264.13 lat (usec): min=1714, max=168301, avg=29497.06, stdev=28263.88 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2311], 10.00th=[ 3359], 20.00th=[ 5604], | 30.00th=[ 8029], 40.00th=[ 14091], 50.00th=[ 21103], 60.00th=[ 27395], | 70.00th=[ 39584], 80.00th=[ 52167], 90.00th=[ 67634], 95.00th=[ 88605], | 99.00th=[114820], 99.50th=[147850], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 95, max= 479, per=25.32%, avg=250.18, stdev=90.58, samples=50 iops : min= 5, max= 29, avg=14.94, stdev= 5.63, samples=50 lat (usec) : 50=0.52%, 100=3.12%, 250=0.52%, 500=0.52% lat (msec) : 2=1.43%, 4=5.73%, 10=10.29%, 20=14.06%, 50=41.41% lat (msec) : 100=19.92%, 250=2.47% cpu : usr=0.07%, sys=7.75%, ctx=1823, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179411: Tue Sep 15 01:41:39 2026 read: IOPS=14, BW=227KiB/s (232kB/s)(5744KiB/25324msec) clat (usec): min=52, max=197084, avg=37076.10, stdev=23917.27 lat (usec): min=53, max=197086, avg=37079.05, stdev=23917.40 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 83], 10.00th=[ 14615], 20.00th=[ 20317], | 30.00th=[ 24511], 40.00th=[ 28705], 50.00th=[ 34866], 60.00th=[ 39060], | 70.00th=[ 44303], 80.00th=[ 51119], 90.00th=[ 62129], 95.00th=[ 81265], | 99.00th=[131597], 99.50th=[147850], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 83, max= 383, per=24.24%, avg=227.62, stdev=78.11, samples=50 iops : min= 5, max= 23, avg=13.52, stdev= 4.85, samples=50 write: IOPS=16, BW=258KiB/s (265kB/s)(6544KiB/25324msec); 0 zone resets clat (usec): min=1389, max=178048, avg=29084.89, stdev=26311.42 lat (usec): min=1392, max=178050, avg=29087.44, stdev=26311.35 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2507], 10.00th=[ 3720], 20.00th=[ 5604], | 30.00th=[ 8979], 40.00th=[ 15664], 50.00th=[ 20841], 60.00th=[ 28443], | 70.00th=[ 38011], 80.00th=[ 50070], 90.00th=[ 67634], 95.00th=[ 81265], | 99.00th=[101188], 99.50th=[110625], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 63, max= 509, per=26.07%, avg=257.54, stdev=95.04, samples=50 iops : min= 3, max= 31, avg=15.40, stdev= 5.95, samples=50 lat (usec) : 100=2.99%, 250=0.65% lat (msec) : 2=1.56%, 4=4.69%, 10=11.20%, 20=12.76%, 50=45.31% lat (msec) : 100=19.27%, 250=1.56% cpu : usr=0.09%, sys=8.03%, ctx=1871, 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=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=179412: Tue Sep 15 01:41:39 2026 read: IOPS=15, BW=245KiB/s (251kB/s)(6256KiB/25502msec) clat (usec): min=35, max=161435, avg=36137.49, stdev=23212.70 lat (usec): min=35, max=161436, avg=36138.85, stdev=23212.66 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 77], 10.00th=[ 11207], 20.00th=[ 21103], | 30.00th=[ 24511], 40.00th=[ 28705], 50.00th=[ 32900], 60.00th=[ 37487], | 70.00th=[ 43254], 80.00th=[ 50594], 90.00th=[ 63177], 95.00th=[ 74974], | 99.00th=[120062], 99.50th=[139461], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 94, max= 473, per=26.10%, avg=245.04, stdev=82.74, samples=50 iops : min= 5, max= 29, avg=14.60, stdev= 5.16, samples=50 write: IOPS=14, BW=237KiB/s (242kB/s)(6032KiB/25502msec); 0 zone resets clat (usec): min=1437, max=142035, avg=29820.02, stdev=27691.16 lat (usec): min=1439, max=142038, avg=29825.32, stdev=27688.84 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2769], 10.00th=[ 4047], 20.00th=[ 6063], | 30.00th=[ 11076], 40.00th=[ 16581], 50.00th=[ 21103], 60.00th=[ 26608], | 70.00th=[ 36439], 80.00th=[ 50070], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[122160], 99.50th=[139461], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 63, max= 447, per=23.52%, avg=232.36, stdev=90.06, samples=50 iops : min= 3, max= 27, avg=13.80, stdev= 5.67, samples=50 lat (usec) : 50=0.26%, 100=3.26%, 250=0.78%, 500=0.39% lat (msec) : 2=1.17%, 4=3.91%, 10=8.98%, 20=13.67%, 50=46.74% lat (msec) : 100=18.36%, 250=2.47% cpu : usr=0.05%, sys=7.85%, ctx=1872, 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=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=179413: Tue Sep 15 01:41:39 2026 read: IOPS=15, BW=246KiB/s (252kB/s)(6032KiB/24540msec) clat (usec): min=45, max=216701, avg=36923.96, stdev=25680.77 lat (usec): min=46, max=216702, avg=36925.06, stdev=25680.77 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 75], 10.00th=[ 14484], 20.00th=[ 18744], | 30.00th=[ 23200], 40.00th=[ 27395], 50.00th=[ 32900], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 50594], 90.00th=[ 64226], 95.00th=[ 81265], | 99.00th=[139461], 99.50th=[152044], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 96, max= 447, per=26.05%, avg=244.60, stdev=69.19, samples=48 iops : min= 6, max= 27, avg=14.58, stdev= 4.34, samples=48 write: IOPS=15, BW=255KiB/s (261kB/s)(6256KiB/24540msec); 0 zone resets clat (usec): min=1645, max=209767, avg=27006.75, stdev=27173.22 lat (usec): min=1647, max=209769, avg=27009.16, stdev=27173.30 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2376], 10.00th=[ 3261], 20.00th=[ 5080], | 30.00th=[ 8717], 40.00th=[ 12387], 50.00th=[ 18482], 60.00th=[ 25822], | 70.00th=[ 32900], 80.00th=[ 46924], 90.00th=[ 61604], 95.00th=[ 77071], | 99.00th=[121111], 99.50th=[164627], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 63, max= 669, per=25.81%, avg=255.02, stdev=113.12, samples=48 iops : min= 3, max= 41, avg=15.23, stdev= 7.13, samples=48 lat (usec) : 50=0.39%, 100=2.47%, 250=0.52%, 500=0.39%, 750=0.26% lat (msec) : 2=1.56%, 4=5.47%, 10=10.42%, 20=15.89%, 50=43.49% lat (msec) : 100=17.06%, 250=2.08% cpu : usr=0.10%, sys=8.04%, ctx=1796, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=939KiB/s (962kB/s), 227KiB/s-246KiB/s (232kB/s-252kB/s), io=23.4MiB (24.5MB), run=24540-25502msec WRITE: bw=988KiB/s (1012kB/s), 237KiB/s-258KiB/s (242kB/s-265kB/s), io=24.6MiB (25.8MB), run=24540-25502msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179415: Tue Sep 15 01:41:48 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(5920KiB/33918msec) clat (msec): min=6, max=212, avg=34.77, stdev=31.00 lat (msec): min=6, max=212, avg=34.77, stdev=31.00 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 47], 90.00th=[ 81], 95.00th=[ 95], | 99.00th=[ 165], 99.50th=[ 184], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 31, max= 507, per=25.09%, avg=175.12, stdev=106.78, samples=66 iops : min= 1, max= 31, avg=10.17, stdev= 6.75, samples=66 write: IOPS=11, BW=188KiB/s (192kB/s)(6368KiB/33918msec); 0 zone resets clat (msec): min=11, max=247, avg=52.74, stdev=34.88 lat (msec): min=11, max=247, avg=52.74, stdev=34.88 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 49], | 70.00th=[ 61], 80.00th=[ 75], 90.00th=[ 102], 95.00th=[ 124], | 99.00th=[ 165], 99.50th=[ 194], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 474, per=25.38%, avg=186.28, stdev=103.89, samples=67 iops : min= 1, max= 29, avg=10.87, stdev= 6.56, samples=67 lat (msec) : 10=2.34%, 20=19.79%, 50=48.83%, 100=21.88%, 250=7.16% cpu : usr=0.05%, sys=2.50%, ctx=1159, 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=179416: Tue Sep 15 01:41:48 2026 read: IOPS=10, BW=167KiB/s (172kB/s)(5744KiB/34296msec) clat (msec): min=7, max=212, avg=36.20, stdev=32.20 lat (msec): min=7, max=212, avg=36.20, stdev=32.20 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 49], 90.00th=[ 81], 95.00th=[ 109], | 99.00th=[ 159], 99.50th=[ 186], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 31, max= 478, per=24.23%, avg=169.12, stdev=97.37, samples=67 iops : min= 1, max= 29, avg= 9.79, stdev= 6.14, samples=67 write: IOPS=11, BW=191KiB/s (195kB/s)(6544KiB/34296msec); 0 zone resets clat (msec): min=12, max=244, avg=51.93, stdev=33.66 lat (msec): min=12, max=244, avg=51.93, stdev=33.65 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 49], | 70.00th=[ 63], 80.00th=[ 80], 90.00th=[ 99], 95.00th=[ 111], | 99.00th=[ 171], 99.50th=[ 190], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 63, max= 510, per=25.89%, avg=190.03, stdev=106.82, samples=68 iops : min= 3, max= 31, avg=11.10, stdev= 6.76, samples=68 lat (msec) : 10=1.43%, 20=20.44%, 50=48.83%, 100=21.61%, 250=7.68% cpu : usr=0.08%, sys=2.50%, ctx=1228, 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=179417: Tue Sep 15 01:41:48 2026 read: IOPS=11, BW=185KiB/s (190kB/s)(6256KiB/33766msec) clat (msec): min=7, max=172, avg=36.25, stdev=31.10 lat (msec): min=7, max=172, avg=36.25, stdev=31.10 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 52], 90.00th=[ 85], 95.00th=[ 114], | 99.00th=[ 148], 99.50th=[ 163], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 32, max= 542, per=26.56%, avg=185.39, stdev=112.23, samples=67 iops : min= 2, max= 33, avg=10.81, stdev= 7.06, samples=67 write: IOPS=11, BW=179KiB/s (183kB/s)(6032KiB/33766msec); 0 zone resets clat (msec): min=14, max=215, avg=51.85, stdev=31.68 lat (msec): min=14, max=215, avg=51.86, stdev=31.68 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 49], | 70.00th=[ 61], 80.00th=[ 73], 90.00th=[ 100], 95.00th=[ 117], | 99.00th=[ 153], 99.50th=[ 199], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 62, max= 512, per=24.21%, avg=177.69, stdev=91.42, samples=67 iops : min= 3, max= 32, avg=10.33, stdev= 5.79, samples=67 lat (msec) : 10=2.21%, 20=19.66%, 50=49.09%, 100=20.96%, 250=8.07% cpu : usr=0.05%, sys=2.58%, ctx=1288, 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=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=179418: Tue Sep 15 01:41:48 2026 read: IOPS=11, BW=179KiB/s (183kB/s)(6032KiB/33784msec) clat (msec): min=6, max=210, avg=36.89, stdev=32.06 lat (msec): min=6, max=210, avg=36.89, stdev=32.06 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 51], 90.00th=[ 89], 95.00th=[ 116], | 99.00th=[ 140], 99.50th=[ 167], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 63, max= 544, per=25.74%, avg=179.66, stdev=103.06, samples=65 iops : min= 3, max= 34, avg=10.45, stdev= 6.56, samples=65 write: IOPS=11, BW=185KiB/s (190kB/s)(6256KiB/33784msec); 0 zone resets clat (msec): min=10, max=228, avg=50.75, stdev=31.42 lat (msec): min=10, max=228, avg=50.75, stdev=31.42 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 61], 80.00th=[ 73], 90.00th=[ 94], 95.00th=[ 113], | 99.00th=[ 165], 99.50th=[ 194], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 31, max= 509, per=25.18%, avg=184.82, stdev=101.96, samples=66 iops : min= 1, max= 31, avg=10.79, stdev= 6.44, samples=66 lat (msec) : 10=1.43%, 20=19.79%, 50=49.61%, 100=21.09%, 250=8.07% cpu : usr=0.06%, sys=2.60%, ctx=1240, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=698KiB/s (715kB/s), 167KiB/s-185KiB/s (172kB/s-190kB/s), io=23.4MiB (24.5MB), run=33766-34296msec WRITE: bw=735KiB/s (752kB/s), 179KiB/s-191KiB/s (183kB/s-195kB/s), io=24.6MiB (25.8MB), run=33766-34296msec 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=179429: Tue Sep 15 01:42:01 2026 read: IOPS=2, BW=2276KiB/s (2330kB/s)(7168KiB/3150msec) clat (msec): min=142, max=612, avg=247.83, stdev=165.71 lat (msec): min=142, max=612, avg=247.88, stdev=165.69 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 155], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 182], 60.00th=[ 243], | 70.00th=[ 243], 80.00th=[ 243], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 2039, max= 5260, per=68.51%, avg=3792.67, stdev=1629.48, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1625KiB/s (1664kB/s)(5120KiB/3150msec); 0 zone resets clat (msec): min=216, max=305, avg=277.26, stdev=36.13 lat (msec): min=216, max=305, avg=277.32, stdev=36.11 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 2011, max= 4039, per=32.59%, avg=2526.00, stdev=1008.74, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=58.33%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=15.59%, ctx=266, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179430: Tue Sep 15 01:42:01 2026 read: IOPS=0, BW=554KiB/s (567kB/s)(2048KiB/3699msec) clat (msec): min=145, max=235, avg=190.85, stdev=63.49 lat (msec): min=145, max=235, avg=190.85, stdev=63.49 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 236], 90.00th=[ 236], 95.00th=[ 236], | 99.00th=[ 236], 99.50th=[ 236], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 1753, max= 2011, per=34.00%, avg=1882.00, stdev=182.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2768KiB/s (2835kB/s)(10.0MiB/3699msec); 0 zone resets clat (msec): min=131, max=615, avg=321.89, stdev=177.12 lat (msec): min=131, max=615, avg=321.98, stdev=177.12 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 150], | 30.00th=[ 165], 40.00th=[ 184], 50.00th=[ 249], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 472], 90.00th=[ 558], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2015, max= 4079, per=39.06%, avg=3027.83, stdev=1099.66, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=58.33%, 500=25.00%, 750=16.67% cpu : usr=0.03%, sys=16.44%, ctx=130, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179431: Tue Sep 15 01:42:01 2026 read: IOPS=2, BW=2489KiB/s (2549kB/s)(6144KiB/2468msec) clat (usec): min=589, max=214071, avg=105898.61, stdev=85963.86 lat (usec): min=591, max=214072, avg=105899.69, stdev=85963.74 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 2278], | 30.00th=[ 2278], 40.00th=[135267], 50.00th=[135267], 60.00th=[139461], | 70.00th=[143655], 80.00th=[143655], 90.00th=[214959], 95.00th=[214959], | 99.00th=[214959], 99.50th=[214959], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 4079, max= 6059, per=91.56%, avg=5069.00, stdev=1400.07, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2489KiB/s (2549kB/s)(6144KiB/2468msec); 0 zone resets clat (msec): min=117, max=487, avg=291.56, stdev=137.01 lat (msec): min=118, max=488, avg=291.80, stdev=137.29 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 326], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 4039, max= 6047, per=65.06%, avg=5043.00, stdev=1419.87, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=58.33%, 500=25.00% cpu : usr=0.00%, sys=17.96%, ctx=139, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179432: Tue Sep 15 01:42:01 2026 read: IOPS=1, BW=1989KiB/s (2037kB/s)(5120KiB/2574msec) clat (usec): min=424, max=139291, avg=68668.56, stdev=52500.39 lat (usec): min=424, max=139291, avg=68669.54, stdev=52500.37 clat percentiles (usec): | 1.00th=[ 424], 5.00th=[ 424], 10.00th=[ 424], 20.00th=[ 424], | 30.00th=[ 46400], 40.00th=[ 46400], 50.00th=[ 60556], 60.00th=[ 60556], | 70.00th=[ 96994], 80.00th=[ 96994], 90.00th=[139461], 95.00th=[139461], | 99.00th=[139461], 99.50th=[139461], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2785KiB/s (2852kB/s)(7168KiB/2574msec); 0 zone resets clat (msec): min=121, max=653, avg=312.89, stdev=190.53 lat (msec): min=121, max=653, avg=312.96, stdev=190.54 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 138], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 275], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 464], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1899, max= 4039, per=36.16%, avg=2803.00, stdev=1122.27, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (usec) : 500=8.33% lat (msec) : 50=8.33%, 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=15.70%, ctx=187, 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=5537KiB/s (5670kB/s), 554KiB/s-2489KiB/s (567kB/s-2549kB/s), io=20.0MiB (20.0MB), run=2468-3699msec WRITE: bw=7751KiB/s (7937kB/s), 1625KiB/s-2785KiB/s (1664kB/s-2852kB/s), io=28.0MiB (29.4MB), run=2468-3699msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179434: Tue Sep 15 01:42:02 2026 read: IOPS=2, BW=2197KiB/s (2250kB/s)(7168KiB/3262msec) clat (msec): min=69, max=389, avg=204.05, stdev=133.60 lat (msec): min=69, max=389, avg=204.05, stdev=133.60 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 96], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 124], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 355], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1996, max= 3871, per=44.62%, avg=2669.50, stdev=874.11, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1570KiB/s (1607kB/s)(5120KiB/3262msec); 0 zone resets clat (msec): min=174, max=588, avg=354.54, stdev=154.31 lat (msec): min=175, max=588, avg=354.62, stdev=154.31 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1996, max= 4055, per=32.23%, avg=2699.67, stdev=1174.04, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=5.77%, ctx=79, 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=179435: Tue Sep 15 01:42:02 2026 read: IOPS=0, BW=609KiB/s (624kB/s)(2048KiB/3361msec) clat (msec): min=319, max=632, avg=475.82, stdev=221.13 lat (msec): min=319, max=632, avg=475.82, stdev=221.13 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1396, max= 2035, per=28.67%, avg=1715.50, stdev=451.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=3047KiB/s (3120kB/s)(10.0MiB/3361msec); 0 zone resets clat (msec): min=71, max=715, avg=233.57, stdev=211.76 lat (msec): min=71, max=715, avg=234.37, stdev=211.60 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 109], 40.00th=[ 113], 50.00th=[ 114], 60.00th=[ 136], | 70.00th=[ 174], 80.00th=[ 372], 90.00th=[ 451], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1396, max= 6107, per=36.98%, avg=3097.80, stdev=1964.29, samples=5 iops : min= 1, max= 5, avg= 2.20, stdev= 1.79, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=5.30%, ctx=70, 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=179436: Tue Sep 15 01:42:02 2026 read: IOPS=1, BW=1865KiB/s (1910kB/s)(6144KiB/3294msec) clat (msec): min=66, max=705, avg=318.80, stdev=240.34 lat (msec): min=66, max=705, avg=318.81, stdev=240.34 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 90], | 30.00th=[ 90], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 368], | 70.00th=[ 443], 80.00th=[ 443], 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= 1921, max= 2043, per=33.41%, avg=1998.75, stdev=55.75, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1865KiB/s (1910kB/s)(6144KiB/3294msec); 0 zone resets clat (msec): min=93, max=320, avg=209.56, stdev=79.04 lat (msec): min=93, max=322, avg=210.91, stdev=79.94 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 188], 50.00th=[ 188], 60.00th=[ 234], | 70.00th=[ 257], 80.00th=[ 257], 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= 1921, max= 4096, per=30.06%, avg=2517.75, stdev=1053.37, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.09%, sys=5.44%, ctx=100, 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=179437: Tue Sep 15 01:42:02 2026 read: IOPS=1, BW=1496KiB/s (1532kB/s)(5120KiB/3423msec) clat (msec): min=42, max=446, avg=324.68, stdev=171.49 lat (msec): min=42, max=446, avg=324.68, stdev=171.49 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 43], 10.00th=[ 43], 20.00th=[ 43], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 2027, max= 4071, per=45.38%, avg=2715.33, stdev=1174.09, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=2, BW=2094KiB/s (2144kB/s)(7168KiB/3423msec); 0 zone resets clat (msec): min=84, max=541, avg=248.30, stdev=177.65 lat (msec): min=84, max=541, avg=248.39, stdev=177.65 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 91], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 226], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 422], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1442, max= 3871, per=27.89%, avg=2336.00, stdev=1058.56, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 50=8.33%, 100=16.67%, 250=16.67%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=6.46%, ctx=76, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5983KiB/s (6127kB/s), 609KiB/s-2197KiB/s (624kB/s-2250kB/s), io=20.0MiB (20.0MB), run=3262-3423msec WRITE: bw=8376KiB/s (8577kB/s), 1570KiB/s-3047KiB/s (1607kB/s-3120kB/s), io=28.0MiB (29.4MB), run=3262-3423msec 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=179448: Tue Sep 15 01:42:14 2026 read: IOPS=0, BW=4012KiB/s (4108kB/s)(12.0MiB/3063msec) clat (msec): min=251, max=1845, avg=1005.81, stdev=800.90 lat (msec): min=251, max=1845, avg=1005.81, stdev=800.90 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.41%, ctx=55, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179449: Tue Sep 15 01:42:14 2026 read: IOPS=0, BW=1567KiB/s (1605kB/s)(4096KiB/2614msec) clat (nsec): min=372078k, max=372078k, avg=372077530.00, stdev= 0.00 lat (nsec): min=372080k, max=372080k, avg=372079740.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 5587, max= 5587, per=100.00%, avg=5587.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3134KiB/s (3209kB/s)(8192KiB/2614msec); 0 zone resets clat (msec): min=954, max=1217, avg=1085.73, stdev=186.18 lat (msec): min=954, max=1217, avg=1086.05, stdev=186.21 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 8159, max= 8159, per=65.66%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=6.05%, ctx=46, 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=179450: Tue Sep 15 01:42:14 2026 write: IOPS=1, BW=4678KiB/s (4790kB/s)(12.0MiB/2627msec); 0 zone resets clat (msec): min=368, max=1138, avg=859.93, stdev=426.75 lat (msec): min=369, max=1139, avg=860.58, stdev=426.47 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 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= 8159, max= 8159, per=65.66%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.27%, sys=8.07%, ctx=68, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179451: Tue Sep 15 01:42:14 2026 write: IOPS=1, BW=4660KiB/s (4772kB/s)(12.0MiB/2637msec); 0 zone resets clat (msec): min=705, max=1059, avg=846.01, stdev=188.06 lat (msec): min=706, max=1059, avg=846.29, stdev=187.98 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8126, max= 8159, per=65.53%, avg=8142.50, stdev=23.33, 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=6.15%, ctx=63, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5349KiB/s (5477kB/s), 1567KiB/s-4012KiB/s (1605kB/s-4108kB/s), io=16.0MiB (16.8MB), run=2614-3063msec WRITE: bw=12.1MiB/s (12.7MB/s), 3134KiB/s-4678KiB/s (3209kB/s-4790kB/s), io=32.0MiB (33.6MB), run=2614-2637msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179444: Tue Sep 15 01:42:14 2026 read: IOPS=1, BW=5585KiB/s (5720kB/s)(12.0MiB/2200msec) clat (msec): min=609, max=757, avg=694.19, stdev=76.08 lat (msec): min=609, max=757, avg=694.20, stdev=76.07 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7984, max= 8175, per=100.00%, avg=8079.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=24.74%, ctx=668, 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=179445: Tue Sep 15 01:42:14 2026 read: IOPS=0, BW=1269KiB/s (1299kB/s)(4096KiB/3229msec) clat (nsec): min=383414k, max=383414k, avg=383414421.00, stdev= 0.00 lat (nsec): min=383417k, max=383417k, avg=383416709.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 5902, max= 5902, per=100.00%, avg=5902.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2537KiB/s (2598kB/s)(8192KiB/3229msec); 0 zone resets clat (msec): min=933, max=1664, avg=1298.99, stdev=517.30 lat (msec): min=933, max=1669, avg=1301.28, stdev=520.14 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 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= 8175, max= 8175, per=80.56%, 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=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.29%, ctx=135, 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=179446: Tue Sep 15 01:42:14 2026 write: IOPS=1, BW=4226KiB/s (4327kB/s)(12.0MiB/2908msec); 0 zone resets clat (msec): min=218, max=1561, avg=956.87, stdev=681.43 lat (msec): min=219, max=1561, avg=957.48, stdev=680.85 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8015, max= 8015, per=78.98%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.16%, ctx=41, 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=179447: Tue Sep 15 01:42:14 2026 write: IOPS=1, BW=5167KiB/s (5291kB/s)(12.0MiB/2378msec); 0 zone resets clat (msec): min=347, max=1193, avg=750.66, stdev=424.78 lat (msec): min=347, max=1194, avg=750.97, stdev=424.73 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 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= 5801, max= 8126, per=68.62%, avg=6963.50, stdev=1644.02, 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=0.04%, sys=7.66%, ctx=61, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5074KiB/s (5196kB/s), 1269KiB/s-5585KiB/s (1299kB/s-5720kB/s), io=16.0MiB (16.8MB), run=2200-3229msec WRITE: bw=9.91MiB/s (10.4MB/s), 2537KiB/s-5167KiB/s (2598kB/s-5291kB/s), io=32.0MiB (33.6MB), run=2378-3229msec