== sanity test 398b: DIO and buffer IO race ============== 02:44:55 (1787121895) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.4796 s, 7.8 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=179236: Wed Aug 19 02:47:11 2026 read: IOPS=12, BW=51.0KiB/s (53.2kB/s)(5992KiB/115297msec) clat (usec): min=35, max=764910, avg=42739.06, stdev=32156.77 lat (usec): min=37, max=764913, avg=42742.35, stdev=32157.11 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11076], 10.00th=[ 16581], 20.00th=[ 22152], | 30.00th=[ 26870], 40.00th=[ 31327], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[131597], 99.50th=[149947], 99.90th=[204473], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 110, per=24.87%, avg=51.73, stdev=17.40, samples=226 iops : min= 1, max= 27, avg=12.30, stdev= 4.39, samples=226 write: IOPS=13, BW=54.6KiB/s (55.9kB/s)(6296KiB/115297msec); 0 zone resets clat (usec): min=859, max=183957, avg=32254.46, stdev=31953.12 lat (usec): min=860, max=183959, avg=32258.71, stdev=31954.28 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1401], 10.00th=[ 1778], 20.00th=[ 4015], | 30.00th=[ 7767], 40.00th=[ 16188], 50.00th=[ 23987], 60.00th=[ 30540], | 70.00th=[ 41681], 80.00th=[ 56361], 90.00th=[ 76022], 95.00th=[ 98042], | 99.00th=[139461], 99.50th=[147850], 99.90th=[179307], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 7, max= 147, per=25.05%, avg=54.60, stdev=22.47, samples=225 iops : min= 1, max= 36, avg=13.02, stdev= 5.68, samples=225 lat (usec) : 50=0.13%, 100=1.56%, 250=0.23%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.70%, 4=4.39%, 10=7.19%, 20=11.43%, 50=41.50% lat (msec) : 100=23.70%, 250=3.87%, 1000=0.03% cpu : usr=0.08%, sys=5.73%, ctx=6684, 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=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=179238: Wed Aug 19 02:47:11 2026 read: IOPS=12, BW=51.0KiB/s (53.2kB/s)(5940KiB/114257msec) clat (usec): min=38, max=793657, avg=41793.88, stdev=32456.52 lat (usec): min=40, max=793659, avg=41795.30, stdev=32456.51 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10552], 10.00th=[ 15926], 20.00th=[ 21365], | 30.00th=[ 26608], 40.00th=[ 31327], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 49021], 80.00th=[ 58459], 90.00th=[ 72877], 95.00th=[ 90702], | 99.00th=[131597], 99.50th=[147850], 99.90th=[191890], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 118, per=24.93%, avg=51.85, stdev=19.80, samples=223 iops : min= 1, max= 29, avg=12.33, stdev= 4.99, samples=223 write: IOPS=13, BW=55.6KiB/s (56.9kB/s)(6348KiB/114257msec); 0 zone resets clat (usec): min=848, max=203225, avg=32569.47, stdev=32856.44 lat (usec): min=848, max=203226, avg=32571.69, stdev=32856.36 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 1811], 20.00th=[ 4015], | 30.00th=[ 7570], 40.00th=[ 15795], 50.00th=[ 23725], 60.00th=[ 32375], | 70.00th=[ 41157], 80.00th=[ 54264], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[143655], 99.50th=[152044], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 23, max= 142, per=25.37%, avg=55.30, stdev=21.44, samples=223 iops : min= 5, max= 35, avg=13.19, stdev= 5.43, samples=223 lat (usec) : 50=0.23%, 100=1.50%, 250=0.10%, 500=0.07%, 1000=0.16% lat (msec) : 2=5.57%, 4=4.69%, 10=7.39%, 20=11.95%, 50=42.38% lat (msec) : 100=22.01%, 250=3.94%, 1000=0.03% cpu : usr=0.09%, sys=5.77%, ctx=6551, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179240: Wed Aug 19 02:47:11 2026 read: IOPS=13, BW=54.8KiB/s (56.1kB/s)(6028KiB/109961msec) clat (usec): min=36, max=196366, avg=40275.39, stdev=25555.16 lat (usec): min=36, max=196366, avg=40286.85, stdev=25547.69 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 8291], 10.00th=[ 15270], 20.00th=[ 20579], | 30.00th=[ 24773], 40.00th=[ 30016], 50.00th=[ 34866], 60.00th=[ 41157], | 70.00th=[ 47973], 80.00th=[ 57410], 90.00th=[ 73925], 95.00th=[ 90702], | 99.00th=[121111], 99.50th=[126354], 99.90th=[173016], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 7, max= 112, per=26.34%, avg=54.80, stdev=20.05, samples=215 iops : min= 1, max= 28, avg=13.07, stdev= 5.06, samples=215 write: IOPS=14, BW=56.9KiB/s (58.3kB/s)(6260KiB/109961msec); 0 zone resets clat (usec): min=914, max=841720, avg=31151.85, stdev=36941.37 lat (usec): min=916, max=841722, avg=31159.30, stdev=36941.22 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1385], 10.00th=[ 1680], 20.00th=[ 3916], | 30.00th=[ 6980], 40.00th=[ 13960], 50.00th=[ 22676], 60.00th=[ 30016], | 70.00th=[ 40633], 80.00th=[ 52691], 90.00th=[ 72877], 95.00th=[ 91751], | 99.00th=[137364], 99.50th=[152044], 99.90th=[200279], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 7, max= 135, per=26.13%, avg=56.95, stdev=23.88, samples=215 iops : min= 1, max= 33, avg=13.61, stdev= 6.04, samples=215 lat (usec) : 50=0.26%, 100=1.86%, 250=0.16%, 500=0.07%, 1000=0.07% lat (msec) : 2=5.83%, 4=4.62%, 10=7.81%, 20=12.37%, 50=42.38% lat (msec) : 100=21.35%, 250=3.19%, 1000=0.03% cpu : usr=0.08%, sys=5.85%, ctx=6486, 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=179242: Wed Aug 19 02:47:11 2026 read: IOPS=13, BW=52.7KiB/s (53.0kB/s)(6052KiB/114808msec) clat (usec): min=33, max=188879, avg=41346.58, stdev=26319.63 lat (usec): min=33, max=188882, avg=41349.60, stdev=26320.85 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 1565], 10.00th=[ 15401], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 31065], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 58459], 90.00th=[ 76022], 95.00th=[ 90702], | 99.00th=[123208], 99.50th=[156238], 99.90th=[185598], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 15, max= 118, per=25.46%, avg=52.95, stdev=18.83, samples=222 iops : min= 3, max= 29, avg=12.60, stdev= 4.75, samples=222 write: IOPS=13, BW=54.3KiB/s (55.6kB/s)(6236KiB/114808msec); 0 zone resets clat (usec): min=901, max=783040, avg=33187.45, stdev=37305.37 lat (usec): min=901, max=783042, avg=33191.18, stdev=37304.57 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1401], 10.00th=[ 1778], 20.00th=[ 3785], | 30.00th=[ 7701], 40.00th=[ 15795], 50.00th=[ 25297], 60.00th=[ 32375], | 70.00th=[ 42206], 80.00th=[ 57934], 90.00th=[ 78119], 95.00th=[ 96994], | 99.00th=[139461], 99.50th=[149947], 99.90th=[173016], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 127, per=24.63%, avg=53.69, stdev=22.29, samples=226 iops : min= 1, max= 31, avg=12.78, stdev= 5.59, samples=226 lat (usec) : 50=0.23%, 100=2.05%, 250=0.07%, 500=0.07%, 1000=0.13% lat (msec) : 2=5.86%, 4=4.46%, 10=7.26%, 20=11.23%, 50=41.89% lat (msec) : 100=22.92%, 250=3.81%, 1000=0.03% cpu : usr=0.09%, sys=5.70%, ctx=6581, 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=208KiB/s (213kB/s), 51.0KiB/s-54.8KiB/s (53.2kB/s-56.1kB/s), io=23.4MiB (24.6MB), run=109961-115297msec WRITE: bw=218KiB/s (223kB/s), 54.3KiB/s-56.9KiB/s (55.6kB/s-58.3kB/s), io=24.6MiB (25.7MB), run=109961-115297msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179235: Wed Aug 19 02:47:46 2026 read: IOPS=10, BW=40.2KiB/s (41.1kB/s)(5992KiB/149185msec) clat (msec): min=5, max=761, avg=39.19, stdev=39.46 lat (msec): min=5, max=761, avg=39.19, stdev=39.46 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 87], 95.00th=[ 112], | 99.00th=[ 165], 99.50th=[ 207], 99.90th=[ 284], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 151, per=25.20%, avg=40.06, stdev=27.76, samples=292 iops : min= 1, max= 37, avg= 9.34, stdev= 6.96, samples=292 write: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6296KiB/149185msec); 0 zone resets clat (msec): min=8, max=289, avg=57.20, stdev=38.90 lat (msec): min=8, max=289, avg=57.20, stdev=38.90 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 84], 90.00th=[ 110], 95.00th=[ 134], | 99.00th=[ 190], 99.50th=[ 239], 99.90th=[ 275], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 151, per=25.10%, avg=41.92, stdev=25.83, samples=293 iops : min= 1, max= 37, avg= 9.81, stdev= 6.48, samples=293 lat (msec) : 10=3.39%, 20=19.63%, 50=42.74%, 100=24.41%, 250=9.67% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=2.29%, ctx=4892, 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=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=179237: Wed Aug 19 02:47:46 2026 read: IOPS=9, BW=39.7KiB/s (40.7kB/s)(5940KiB/149466msec) clat (msec): min=4, max=812, avg=39.64, stdev=41.90 lat (msec): min=4, max=812, avg=39.64, stdev=41.90 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 59], 90.00th=[ 91], 95.00th=[ 120], | 99.00th=[ 178], 99.50th=[ 211], 99.90th=[ 300], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 166, per=25.13%, avg=39.96, stdev=28.50, samples=289 iops : min= 1, max= 41, avg= 9.31, stdev= 7.15, samples=289 write: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6348KiB/149466msec); 0 zone resets clat (msec): min=10, max=293, avg=56.80, stdev=40.59 lat (msec): min=10, max=293, avg=56.80, stdev=40.59 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 83], 90.00th=[ 110], 95.00th=[ 142], | 99.00th=[ 201], 99.50th=[ 234], 99.90th=[ 288], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 175, per=25.46%, avg=42.51, stdev=27.36, samples=290 iops : min= 1, max= 43, avg= 9.95, stdev= 6.86, samples=290 lat (msec) : 10=3.65%, 20=18.98%, 50=43.65%, 100=23.37%, 250=10.12% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.06%, sys=2.26%, ctx=4913, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179239: Wed Aug 19 02:47:46 2026 read: IOPS=10, BW=40.4KiB/s (41.3kB/s)(6028KiB/149343msec) clat (msec): min=4, max=297, avg=39.44, stdev=37.36 lat (msec): min=4, max=297, avg=39.44, stdev=37.36 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 57], 90.00th=[ 86], 95.00th=[ 120], | 99.00th=[ 186], 99.50th=[ 209], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 136, per=25.44%, avg=40.45, stdev=27.01, samples=290 iops : min= 1, max= 34, avg= 9.44, stdev= 6.78, samples=290 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6260KiB/149343msec); 0 zone resets clat (msec): min=9, max=815, avg=57.16, stdev=43.64 lat (msec): min=9, max=815, avg=57.16, stdev=43.64 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 68], 80.00th=[ 84], 90.00th=[ 112], 95.00th=[ 138], | 99.00th=[ 188], 99.50th=[ 218], 99.90th=[ 279], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 135, per=25.00%, avg=41.75, stdev=27.07, samples=292 iops : min= 1, max= 33, avg= 9.76, stdev= 6.79, samples=292 lat (msec) : 10=3.52%, 20=18.10%, 50=45.80%, 100=22.10%, 250=10.25% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.06%, sys=2.27%, ctx=4934, 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=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=179241: Wed Aug 19 02:47:46 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6052KiB/150116msec) clat (msec): min=5, max=263, avg=39.37, stdev=35.59 lat (msec): min=5, max=263, avg=39.37, stdev=35.59 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 59], 90.00th=[ 89], 95.00th=[ 114], | 99.00th=[ 163], 99.50th=[ 188], 99.90th=[ 255], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 7, max= 199, per=25.62%, avg=40.73, stdev=28.80, samples=290 iops : min= 1, max= 49, avg= 9.51, stdev= 7.23, samples=290 write: IOPS=10, BW=41.5KiB/s (42.5kB/s)(6236KiB/150116msec); 0 zone resets clat (msec): min=7, max=795, avg=57.79, stdev=45.25 lat (msec): min=7, max=795, avg=57.79, stdev=45.25 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 44], 60.00th=[ 54], | 70.00th=[ 68], 80.00th=[ 87], 90.00th=[ 112], 95.00th=[ 140], | 99.00th=[ 201], 99.50th=[ 247], 99.90th=[ 309], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 151, per=24.72%, avg=41.28, stdev=27.58, samples=295 iops : min= 1, max= 37, avg= 9.64, stdev= 6.92, samples=295 lat (msec) : 10=4.13%, 20=17.87%, 50=44.04%, 100=23.24%, 250=10.38% lat (msec) : 500=0.29%, 1000=0.03% cpu : usr=0.06%, sys=2.23%, ctx=4859, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=160KiB/s (164kB/s), 39.7KiB/s-40.4KiB/s (40.7kB/s-41.3kB/s), io=23.4MiB (24.6MB), run=149185-150116msec WRITE: bw=167KiB/s (171kB/s), 41.5KiB/s-42.5KiB/s (42.5kB/s-43.5kB/s), io=24.6MiB (25.7MB), run=149185-150116msec 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=179278: Wed Aug 19 02:48:32 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(5920KiB/36191msec) clat (usec): min=42, max=213136, avg=51269.23, stdev=32547.38 lat (usec): min=44, max=213137, avg=51270.41, stdev=32547.39 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 64], 10.00th=[ 17957], 20.00th=[ 27657], | 30.00th=[ 33817], 40.00th=[ 39584], 50.00th=[ 45351], 60.00th=[ 53216], | 70.00th=[ 61604], 80.00th=[ 74974], 90.00th=[ 91751], 95.00th=[108528], | 99.00th=[147850], 99.50th=[187696], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 61, max= 409, per=24.57%, avg=162.41, stdev=68.13, samples=71 iops : min= 3, max= 25, avg= 9.34, stdev= 4.30, samples=71 write: IOPS=10, BW=176KiB/s (180kB/s)(6368KiB/36191msec); 0 zone resets clat (usec): min=1357, max=227626, avg=42826.17, stdev=40958.03 lat (usec): min=1358, max=227628, avg=42828.47, stdev=40958.09 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2040], 10.00th=[ 3294], 20.00th=[ 6390], | 30.00th=[ 12649], 40.00th=[ 21365], 50.00th=[ 30802], 60.00th=[ 42730], | 70.00th=[ 56886], 80.00th=[ 76022], 90.00th=[ 96994], 95.00th=[128451], | 99.00th=[168821], 99.50th=[227541], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 32, max= 443, per=25.58%, avg=178.04, stdev=69.88, samples=70 iops : min= 2, max= 27, avg=10.33, stdev= 4.38, samples=70 lat (usec) : 50=0.26%, 100=2.99%, 250=0.13%, 750=0.13% lat (msec) : 2=2.47%, 4=4.82%, 10=7.29%, 20=7.29%, 50=35.16% lat (msec) : 100=30.73%, 250=8.72% cpu : usr=0.07%, sys=5.65%, ctx=1626, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179279: Wed Aug 19 02:48:32 2026 read: IOPS=10, BW=161KiB/s (164kB/s)(5744KiB/35759msec) clat (usec): min=55, max=191561, avg=54289.91, stdev=34837.46 lat (usec): min=56, max=191562, avg=54299.97, stdev=34831.47 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 363], 10.00th=[ 20841], 20.00th=[ 27395], | 30.00th=[ 33162], 40.00th=[ 39060], 50.00th=[ 46924], 60.00th=[ 55837], | 70.00th=[ 66323], 80.00th=[ 77071], 90.00th=[ 98042], 95.00th=[117965], | 99.00th=[177210], 99.50th=[187696], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 31, max= 348, per=24.05%, avg=159.00, stdev=70.25, samples=70 iops : min= 1, max= 21, avg= 9.13, stdev= 4.45, samples=70 write: IOPS=11, BW=183KiB/s (187kB/s)(6544KiB/35759msec); 0 zone resets clat (usec): min=1312, max=210631, avg=39161.78, stdev=38073.93 lat (usec): min=1314, max=210633, avg=39169.11, stdev=38070.44 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2040], 10.00th=[ 3130], 20.00th=[ 5997], | 30.00th=[ 10159], 40.00th=[ 20841], 50.00th=[ 30540], 60.00th=[ 38011], | 70.00th=[ 48497], 80.00th=[ 63177], 90.00th=[ 93848], 95.00th=[115868], | 99.00th=[152044], 99.50th=[191890], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 31, max= 383, per=26.06%, avg=181.36, stdev=82.06, samples=70 iops : min= 1, max= 23, avg=10.54, stdev= 5.19, samples=70 lat (usec) : 100=1.82%, 250=0.26%, 500=0.52% lat (msec) : 2=2.08%, 4=5.21%, 10=8.46%, 20=7.03%, 50=36.98% lat (msec) : 100=29.43%, 250=8.20% cpu : usr=0.08%, sys=5.87%, ctx=1756, 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=179280: Wed Aug 19 02:48:32 2026 read: IOPS=11, BW=183KiB/s (188kB/s)(6256KiB/34112msec) clat (usec): min=49, max=217243, avg=52509.40, stdev=34056.17 lat (usec): min=50, max=217244, avg=52510.85, stdev=34056.21 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 71], 10.00th=[ 15664], 20.00th=[ 25297], | 30.00th=[ 32900], 40.00th=[ 42206], 50.00th=[ 49021], 60.00th=[ 55837], | 70.00th=[ 65274], 80.00th=[ 77071], 90.00th=[ 92799], 95.00th=[107480], | 99.00th=[170918], 99.50th=[214959], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 31, max= 415, per=27.76%, avg=183.46, stdev=79.88, samples=67 iops : min= 1, max= 25, avg=10.67, stdev= 5.04, samples=67 write: IOPS=11, BW=177KiB/s (181kB/s)(6032KiB/34112msec); 0 zone resets clat (usec): min=1450, max=206676, avg=35874.13, stdev=40031.39 lat (usec): min=1451, max=206677, avg=35876.83, stdev=40031.37 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1909], 10.00th=[ 2704], 20.00th=[ 5407], | 30.00th=[ 7242], 40.00th=[ 13566], 50.00th=[ 20841], 60.00th=[ 30540], | 70.00th=[ 42206], 80.00th=[ 60556], 90.00th=[ 91751], 95.00th=[117965], | 99.00th=[191890], 99.50th=[200279], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 31, max= 618, per=25.15%, avg=175.06, stdev=98.47, samples=67 iops : min= 1, max= 38, avg=10.13, stdev= 6.20, samples=67 lat (usec) : 50=0.13%, 100=4.04%, 250=0.13% lat (msec) : 2=2.99%, 4=4.82%, 10=9.90%, 20=8.33%, 50=32.81% lat (msec) : 100=28.91%, 250=7.94% cpu : usr=0.07%, sys=5.69%, ctx=1652, 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=179281: Wed Aug 19 02:48:32 2026 read: IOPS=10, BW=171KiB/s (175kB/s)(6032KiB/35367msec) clat (usec): min=45, max=310577, avg=54292.45, stdev=42325.41 lat (usec): min=53, max=310579, avg=54297.83, stdev=42321.88 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 67], 10.00th=[ 1319], 20.00th=[ 24511], | 30.00th=[ 31851], 40.00th=[ 38536], 50.00th=[ 45876], 60.00th=[ 53740], | 70.00th=[ 62653], 80.00th=[ 80217], 90.00th=[104334], 95.00th=[137364], | 99.00th=[198181], 99.50th=[235930], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 62, max= 443, per=25.51%, avg=168.62, stdev=79.51, samples=69 iops : min= 3, max= 27, avg= 9.74, stdev= 5.02, samples=69 write: IOPS=11, BW=177KiB/s (181kB/s)(6256KiB/35367msec); 0 zone resets clat (usec): min=1524, max=203155, avg=37659.80, stdev=41484.34 lat (usec): min=1526, max=203158, avg=37663.06, stdev=41483.76 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2073], 10.00th=[ 2900], 20.00th=[ 5866], | 30.00th=[ 8291], 40.00th=[ 13829], 50.00th=[ 21890], 60.00th=[ 31851], | 70.00th=[ 45876], 80.00th=[ 66323], 90.00th=[ 92799], 95.00th=[124257], | 99.00th=[196084], 99.50th=[198181], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 30, max= 464, per=25.05%, avg=174.33, stdev=88.53, samples=69 iops : min= 1, max= 29, avg=10.10, stdev= 5.65, samples=69 lat (usec) : 50=0.13%, 100=4.43%, 250=0.13% lat (msec) : 2=2.08%, 4=4.56%, 10=10.94%, 20=8.85%, 50=32.94% lat (msec) : 100=26.17%, 250=9.64%, 500=0.13% cpu : usr=0.06%, sys=5.33%, ctx=1584, 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=662KiB/s (678kB/s), 161KiB/s-183KiB/s (164kB/s-188kB/s), io=23.4MiB (24.5MB), run=34112-36191msec WRITE: bw=696KiB/s (713kB/s), 176KiB/s-183KiB/s (180kB/s-187kB/s), io=24.6MiB (25.8MB), run=34112-36191msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179284: Wed Aug 19 02:48:43 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5920KiB/45620msec) clat (msec): min=6, max=298, avg=50.54, stdev=46.38 lat (msec): min=6, max=298, avg=50.55, stdev=46.38 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 118], 95.00th=[ 153], | 99.00th=[ 218], 99.50th=[ 257], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 30, max= 467, per=24.76%, avg=128.25, stdev=95.66, samples=89 iops : min= 1, max= 29, avg= 7.22, stdev= 6.06, samples=89 write: IOPS=8, BW=140KiB/s (143kB/s)(6368KiB/45620msec); 0 zone resets clat (msec): min=13, max=265, avg=67.22, stdev=48.95 lat (msec): min=13, max=265, avg=67.22, stdev=48.95 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 62], | 70.00th=[ 78], 80.00th=[ 99], 90.00th=[ 142], 95.00th=[ 182], | 99.00th=[ 241], 99.50th=[ 243], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 25, max= 415, per=25.70%, avg=140.32, stdev=94.47, samples=88 iops : min= 1, max= 25, avg= 7.99, stdev= 5.95, samples=88 lat (msec) : 10=1.43%, 20=13.02%, 50=44.27%, 100=24.22%, 250=16.67% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.89%, ctx=1251, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179285: Wed Aug 19 02:48:43 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5744KiB/46082msec) clat (msec): min=6, max=245, avg=45.64, stdev=44.09 lat (msec): min=6, max=245, avg=45.64, stdev=44.09 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 72], 90.00th=[ 111], 95.00th=[ 146], | 99.00th=[ 203], 99.50th=[ 243], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 447, per=26.10%, avg=135.21, stdev=99.21, samples=82 iops : min= 1, max= 27, avg= 7.67, stdev= 6.24, samples=82 write: IOPS=8, BW=142KiB/s (145kB/s)(6544KiB/46082msec); 0 zone resets clat (msec): min=12, max=368, avg=72.05, stdev=58.56 lat (msec): min=12, max=368, avg=72.06, stdev=58.56 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 51], 60.00th=[ 61], | 70.00th=[ 84], 80.00th=[ 114], 90.00th=[ 157], 95.00th=[ 197], | 99.00th=[ 264], 99.50th=[ 300], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 29, max= 512, per=26.04%, avg=142.17, stdev=103.62, samples=89 iops : min= 1, max= 32, avg= 8.09, stdev= 6.54, samples=89 lat (msec) : 10=1.82%, 20=19.01%, 50=39.19%, 100=21.09%, 250=17.97% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.96%, ctx=1292, 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=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=179286: Wed Aug 19 02:48:43 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6256KiB/46152msec) clat (msec): min=7, max=333, avg=51.11, stdev=51.33 lat (msec): min=7, max=333, avg=51.11, stdev=51.33 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 52], 80.00th=[ 73], 90.00th=[ 129], 95.00th=[ 165], | 99.00th=[ 241], 99.50th=[ 262], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 27, max= 574, per=26.48%, avg=137.18, stdev=115.37, samples=88 iops : min= 1, max= 35, avg= 7.78, stdev= 7.24, samples=88 write: IOPS=8, BW=131KiB/s (134kB/s)(6032KiB/46152msec); 0 zone resets clat (msec): min=11, max=346, avg=69.10, stdev=54.23 lat (msec): min=11, max=346, avg=69.11, stdev=54.24 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 51], 60.00th=[ 63], | 70.00th=[ 79], 80.00th=[ 104], 90.00th=[ 150], 95.00th=[ 184], | 99.00th=[ 257], 99.50th=[ 296], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 29, max= 479, per=23.59%, avg=128.80, stdev=93.54, samples=89 iops : min= 1, max= 29, avg= 7.26, stdev= 5.90, samples=89 lat (msec) : 10=2.60%, 20=15.10%, 50=40.76%, 100=23.05%, 250=17.45% lat (msec) : 500=1.04% cpu : usr=0.05%, sys=1.89%, ctx=1221, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179287: Wed Aug 19 02:48:43 2026 read: IOPS=8, BW=131KiB/s (134kB/s)(6032KiB/45932msec) clat (msec): min=7, max=345, avg=49.04, stdev=47.94 lat (msec): min=7, max=345, avg=49.05, stdev=47.94 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 51], 80.00th=[ 78], 90.00th=[ 112], 95.00th=[ 140], | 99.00th=[ 236], 99.50th=[ 305], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 480, per=26.26%, avg=136.05, stdev=97.77, samples=86 iops : min= 1, max= 30, avg= 7.71, stdev= 6.20, samples=86 write: IOPS=8, BW=136KiB/s (139kB/s)(6256KiB/45932msec); 0 zone resets clat (msec): min=15, max=355, avg=69.90, stdev=53.30 lat (msec): min=15, max=355, avg=69.90, stdev=53.30 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 42], 50.00th=[ 51], 60.00th=[ 63], | 70.00th=[ 81], 80.00th=[ 107], 90.00th=[ 146], 95.00th=[ 176], | 99.00th=[ 247], 99.50th=[ 321], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 29, max= 510, per=25.51%, avg=139.30, stdev=101.82, samples=88 iops : min= 1, max= 31, avg= 7.91, stdev= 6.39, samples=88 lat (msec) : 10=0.78%, 20=14.71%, 50=44.27%, 100=22.14%, 250=17.32% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.88%, ctx=1274, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=519KiB/s (531kB/s), 125KiB/s-136KiB/s (128kB/s-139kB/s), io=23.4MiB (24.5MB), run=45620-46152msec WRITE: bw=546KiB/s (559kB/s), 131KiB/s-142KiB/s (134kB/s-145kB/s), io=24.6MiB (25.8MB), run=45620-46152msec 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=179300: Wed Aug 19 02:48:59 2026 read: IOPS=1, BW=1990KiB/s (2038kB/s)(7168KiB/3602msec) clat (usec): min=515, max=781747, avg=260928.46, stdev=246461.13 lat (usec): min=517, max=781748, avg=260930.18, stdev=246460.96 clat percentiles (usec): | 1.00th=[ 515], 5.00th=[ 515], 10.00th=[ 515], 20.00th=[154141], | 30.00th=[166724], 40.00th=[166724], 50.00th=[189793], 60.00th=[261096], | 70.00th=[261096], 80.00th=[270533], 90.00th=[784335], 95.00th=[784335], | 99.00th=[784335], 99.50th=[784335], 99.90th=[784335], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 1957, max= 4023, per=65.91%, avg=2992.75, stdev=1162.89, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1421KiB/s (1456kB/s)(5120KiB/3602msec); 0 zone resets clat (msec): min=213, max=500, avg=331.68, stdev=107.45 lat (msec): min=213, max=500, avg=331.79, stdev=107.45 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 2011, max= 3915, per=39.34%, avg=2501.00, stdev=942.76, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=11.55%, ctx=285, 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=179301: Wed Aug 19 02:48:59 2026 read: IOPS=0, BW=454KiB/s (465kB/s)(2048KiB/4510msec) clat (usec): min=1616, max=183333, avg=92474.72, stdev=128493.45 lat (usec): min=1617, max=183335, avg=92476.87, stdev=128493.90 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1614], 10.00th=[ 1614], 20.00th=[ 1614], | 30.00th=[ 1614], 40.00th=[ 1614], 50.00th=[ 1614], 60.00th=[183501], | 70.00th=[183501], 80.00th=[183501], 90.00th=[183501], 95.00th=[183501], | 99.00th=[183501], 99.50th=[183501], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 1381, max= 2043, per=37.70%, avg=1712.00, stdev=468.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2271KiB/s (2325kB/s)(10.0MiB/4510msec); 0 zone resets clat (msec): min=111, max=949, avg=426.27, stdev=305.57 lat (msec): min=111, max=949, avg=427.66, stdev=305.06 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 140], | 30.00th=[ 194], 40.00th=[ 259], 50.00th=[ 300], 60.00th=[ 309], | 70.00th=[ 414], 80.00th=[ 785], 90.00th=[ 802], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 1954, max= 6095, per=47.60%, avg=3025.83, stdev=1713.71, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 2=8.33%, 250=33.33%, 500=33.33%, 1000=25.00% cpu : usr=0.07%, sys=10.78%, ctx=126, 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=179302: Wed Aug 19 02:48:59 2026 read: IOPS=1, BW=1910KiB/s (1956kB/s)(6144KiB/3217msec) clat (usec): min=950, max=252565, avg=120296.20, stdev=130839.63 lat (usec): min=952, max=252566, avg=120297.55, stdev=130839.62 clat percentiles (usec): | 1.00th=[ 955], 5.00th=[ 955], 10.00th=[ 955], 20.00th=[ 1254], | 30.00th=[ 1254], 40.00th=[ 2147], 50.00th=[ 2147], 60.00th=[214959], | 70.00th=[248513], 80.00th=[248513], 90.00th=[252707], 95.00th=[252707], | 99.00th=[252707], 99.50th=[252707], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 2043, max= 6083, per=89.47%, avg=4063.00, stdev=2856.71, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1910KiB/s (1956kB/s)(6144KiB/3217msec); 0 zone resets clat (msec): min=168, max=983, avg=397.69, stdev=302.57 lat (msec): min=168, max=983, avg=397.80, stdev=302.56 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 342], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 1973, max= 2864, per=35.03%, avg=2226.75, stdev=425.89, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 4=8.33%, 250=41.67%, 500=25.00%, 1000=8.33% cpu : usr=0.06%, sys=12.69%, ctx=99, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179303: Wed Aug 19 02:48:59 2026 read: IOPS=1, BW=1464KiB/s (1499kB/s)(5120KiB/3498msec) clat (usec): min=331, max=269675, avg=54297.55, stdev=120399.90 lat (usec): min=332, max=269676, avg=54298.61, stdev=120400.20 clat percentiles (usec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 453], 40.00th=[ 453], 50.00th=[ 482], 60.00th=[ 482], | 70.00th=[ 545], 80.00th=[ 545], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2049KiB/s (2098kB/s)(7168KiB/3498msec); 0 zone resets clat (msec): min=246, max=945, avg=439.41, stdev=234.93 lat (msec): min=246, max=945, avg=440.48, stdev=234.43 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 347], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 468], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1444, max= 4055, per=37.42%, avg=2378.75, stdev=1149.05, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=25.00%, 750=8.33% lat (msec) : 250=8.33%, 500=50.00%, 1000=8.33% cpu : usr=0.00%, sys=10.78%, ctx=132, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4541KiB/s (4650kB/s), 454KiB/s-1990KiB/s (465kB/s-2038kB/s), io=20.0MiB (20.0MB), run=3217-4510msec WRITE: bw=6357KiB/s (6510kB/s), 1421KiB/s-2271KiB/s (1456kB/s-2325kB/s), io=28.0MiB (29.4MB), run=3217-4510msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179305: Wed Aug 19 02:48:59 2026 read: IOPS=1, BW=1632KiB/s (1671kB/s)(7168KiB/4392msec) clat (msec): min=87, max=1222, avg=433.33, stdev=443.20 lat (msec): min=87, max=1222, avg=433.33, stdev=443.20 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 107], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 150], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 802], 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= 1980, max= 3938, per=54.22%, avg=2392.00, stdev=864.41, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1166KiB/s (1194kB/s)(5120KiB/4392msec); 0 zone resets clat (msec): min=116, max=366, avg=249.83, stdev=104.11 lat (msec): min=116, max=367, avg=249.91, stdev=104.12 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 2019, max= 4079, per=43.82%, avg=2707.00, stdev=1188.19, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=3.76%, 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=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=179306: Wed Aug 19 02:48:59 2026 read: IOPS=0, BW=444KiB/s (455kB/s)(2048KiB/4610msec) clat (msec): min=230, max=404, avg=317.42, stdev=122.76 lat (msec): min=230, max=404, avg=317.42, stdev=122.76 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1475, max= 1969, per=39.03%, avg=1722.00, stdev=349.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2221KiB/s (2275kB/s)(10.0MiB/4610msec); 0 zone resets clat (msec): min=153, max=784, avg=376.93, stdev=201.23 lat (msec): min=153, max=784, avg=377.12, stdev=201.19 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 190], | 30.00th=[ 203], 40.00th=[ 239], 50.00th=[ 338], 60.00th=[ 384], | 70.00th=[ 409], 80.00th=[ 464], 90.00th=[ 609], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1969, max= 4039, per=43.30%, avg=2674.33, stdev=1042.38, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.02%, sys=5.90%, ctx=123, 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=179307: Wed Aug 19 02:48:59 2026 read: IOPS=1, BW=1444KiB/s (1479kB/s)(6144KiB/4255msec) clat (msec): min=101, max=674, avg=227.96, stdev=220.14 lat (msec): min=101, max=674, avg=227.96, stdev=220.14 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 120], | 30.00th=[ 120], 40.00th=[ 150], 50.00th=[ 150], 60.00th=[ 159], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1969, max= 2039, per=45.51%, avg=2007.75, stdev=30.39, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1444KiB/s (1479kB/s)(6144KiB/4255msec); 0 zone resets clat (msec): min=139, max=1200, avg=450.09, stdev=406.60 lat (msec): min=139, max=1201, avg=450.46, stdev=407.06 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 439], | 70.00th=[ 575], 80.00th=[ 575], 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= 1497, max= 2000, per=30.14%, avg=1861.50, stdev=243.34, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=66.67%, 500=8.33%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.88%, ctx=103, 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=179308: Wed Aug 19 02:48:59 2026 read: IOPS=1, BW=1103KiB/s (1130kB/s)(5120KiB/4641msec) clat (msec): min=80, max=734, avg=262.64, stdev=276.27 lat (msec): min=80, max=734, avg=262.64, stdev=276.27 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 84], 40.00th=[ 84], 50.00th=[ 131], 60.00th=[ 131], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1969, max= 4039, per=60.80%, avg=2682.33, stdev=1175.43, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1544KiB/s (1582kB/s)(7168KiB/4641msec); 0 zone resets clat (msec): min=99, max=1120, avg=445.18, stdev=345.74 lat (msec): min=99, max=1120, avg=445.28, stdev=345.75 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 146], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 334], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 558], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1969, max= 4000, per=42.90%, avg=2649.67, stdev=1169.44, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=16.67%, 500=25.00%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=5.19%, ctx=124, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4413KiB/s (4519kB/s), 444KiB/s-1632KiB/s (455kB/s-1671kB/s), io=20.0MiB (20.0MB), run=4255-4641msec WRITE: bw=6178KiB/s (6326kB/s), 1166KiB/s-2221KiB/s (1194kB/s-2275kB/s), io=28.0MiB (29.4MB), run=4255-4641msec 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=179317: Wed Aug 19 02:49:14 2026 read: IOPS=0, BW=3809KiB/s (3900kB/s)(12.0MiB/3226msec) clat (msec): min=877, max=1139, avg=1036.77, stdev=140.07 lat (msec): min=877, max=1139, avg=1036.77, stdev=140.07 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 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= 7543, max= 8175, per=100.00%, avg=7859.00, stdev=446.89, 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=0.06%, sys=11.69%, ctx=306, 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=179319: Wed Aug 19 02:49:14 2026 read: IOPS=0, BW=1371KiB/s (1404kB/s)(4096KiB/2987msec) clat (nsec): min=1020.2M, max=1020.2M, avg=1020192190.00, stdev= 0.00 lat (nsec): min=1020.2M, max=1020.2M, avg=1020193630.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1020], | 30.00th=[ 1020], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2743KiB/s (2808kB/s)(8192KiB/2987msec); 0 zone resets clat (msec): min=636, max=1194, avg=915.64, stdev=394.54 lat (msec): min=637, max=1195, avg=916.08, stdev=394.50 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 1200], | 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= 7543, max= 7543, per=84.78%, avg=7543.00, 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=4.39%, ctx=190, 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=179321: Wed Aug 19 02:49:14 2026 write: IOPS=2, BW=8325KiB/s (8525kB/s)(12.0MiB/1476msec); 0 zone resets clat (msec): min=302, max=773, avg=460.67, stdev=270.98 lat (msec): min=302, max=774, avg=462.28, stdev=270.27 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7460, max= 8143, per=87.69%, avg=7801.50, stdev=482.95, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=8.75%, ctx=82, 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=179322: Wed Aug 19 02:49:14 2026 write: IOPS=0, BW=3336KiB/s (3416kB/s)(12.0MiB/3683msec); 0 zone resets clat (msec): min=389, max=2474, avg=1179.69, stdev=1130.64 lat (msec): min=396, max=2475, avg=1182.26, stdev=1128.44 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 2467], 80.00th=[ 2467], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.04%, ctx=61, 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=5079KiB/s (5201kB/s), 1371KiB/s-3809KiB/s (1404kB/s-3900kB/s), io=16.0MiB (16.8MB), run=2987-3226msec WRITE: bw=8897KiB/s (9111kB/s), 2743KiB/s-8325KiB/s (2808kB/s-8525kB/s), io=32.0MiB (33.6MB), run=1476-3683msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179315: Wed Aug 19 02:49:14 2026 read: IOPS=0, BW=3446KiB/s (3529kB/s)(12.0MiB/3566msec) clat (msec): min=865, max=1446, avg=1157.39, stdev=290.52 lat (msec): min=865, max=1446, avg=1157.40, stdev=290.52 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 7937, max= 8192, per=100.00%, avg=8064.50, stdev=180.31, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.03%, ctx=51, 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=179316: Wed Aug 19 02:49:14 2026 read: IOPS=0, BW=959KiB/s (982kB/s)(4096KiB/4273msec) clat (nsec): min=2021.3M, max=2021.3M, avg=2021320726.00, stdev= 0.00 lat (nsec): min=2021.3M, max=2021.3M, avg=2021323125.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2022], 5.00th=[ 2022], 10.00th=[ 2022], 20.00th=[ 2022], | 30.00th=[ 2022], 40.00th=[ 2022], 50.00th=[ 2022], 60.00th=[ 2022], | 70.00th=[ 2022], 80.00th=[ 2022], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 7543, max= 7543, per=100.00%, avg=7543.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1917KiB/s (1963kB/s)(8192KiB/4273msec); 0 zone resets clat (msec): min=244, max=1816, avg=1030.13, stdev=1111.50 lat (msec): min=244, max=1816, avg=1030.49, stdev=1111.51 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 1821], | 70.00th=[ 1821], 80.00th=[ 1821], 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= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=3.21%, ctx=55, 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=179318: Wed Aug 19 02:49:14 2026 write: IOPS=0, BW=2979KiB/s (3050kB/s)(12.0MiB/4125msec); 0 zone resets clat (msec): min=516, max=2941, avg=1333.88, stdev=1392.52 lat (msec): min=518, max=2942, avg=1335.10, stdev=1391.89 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 2937], 80.00th=[ 2937], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.30%, ctx=56, 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=179320: Wed Aug 19 02:49:14 2026 write: IOPS=0, BW=3606KiB/s (3692kB/s)(12.0MiB/3408msec); 0 zone resets clat (msec): min=311, max=2673, avg=1110.13, stdev=1353.82 lat (msec): min=315, max=2673, avg=1112.49, stdev=1352.12 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 5859, max= 8159, per=91.41%, avg=7009.00, stdev=1626.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.12%, sys=3.64%, ctx=56, 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=3834KiB/s (3926kB/s), 959KiB/s-3446KiB/s (982kB/s-3529kB/s), io=16.0MiB (16.8MB), run=3566-4273msec WRITE: bw=7669KiB/s (7853kB/s), 1917KiB/s-3606KiB/s (1963kB/s-3692kB/s), io=32.0MiB (33.6MB), run=3408-4273msec