== sanity test 398b: DIO and buffer IO race ============== 23:29:36 (1788751776) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.80409 s, 10.5 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=179085: Sun Sep 6 23:31:25 2026 read: IOPS=16, BW=64.2KiB/s (65.7kB/s)(5992KiB/93335msec) clat (usec): min=39, max=811944, avg=34634.34, stdev=30063.62 lat (usec): min=39, max=811946, avg=34635.65, stdev=30063.65 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 8979], 10.00th=[ 13698], 20.00th=[ 17695], | 30.00th=[ 21365], 40.00th=[ 24773], 50.00th=[ 29230], 60.00th=[ 34341], | 70.00th=[ 40633], 80.00th=[ 48497], 90.00th=[ 61080], 95.00th=[ 73925], | 99.00th=[113771], 99.50th=[135267], 99.90th=[254804], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 23, max= 159, per=25.07%, avg=64.44, stdev=20.64, samples=183 iops : min= 5, max= 39, avg=15.47, stdev= 5.17, samples=183 write: IOPS=16, BW=67.5KiB/s (69.1kB/s)(6296KiB/93335msec); 0 zone resets clat (usec): min=665, max=254072, avg=26082.28, stdev=26066.38 lat (usec): min=665, max=254073, avg=26086.63, stdev=26073.37 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1237], 10.00th=[ 1500], 20.00th=[ 2966], | 30.00th=[ 5604], 40.00th=[ 12780], 50.00th=[ 20579], 60.00th=[ 26608], | 70.00th=[ 33817], 80.00th=[ 44303], 90.00th=[ 61604], 95.00th=[ 77071], | 99.00th=[106431], 99.50th=[119014], 99.90th=[149947], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 15, max= 215, per=25.15%, avg=67.65, stdev=27.40, samples=183 iops : min= 3, max= 53, avg=16.29, stdev= 6.87, samples=183 lat (usec) : 50=0.10%, 100=1.60%, 250=0.26%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=7.26%, 4=4.95%, 10=7.26%, 20=16.83%, 50=44.24% lat (msec) : 100=15.66%, 250=1.50%, 500=0.07%, 1000=0.03% cpu : usr=0.10%, sys=6.58%, ctx=6735, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179086: Sun Sep 6 23:31:25 2026 read: IOPS=16, BW=64.0KiB/s (65.5kB/s)(5940KiB/92800msec) clat (usec): min=38, max=181549, avg=33947.21, stdev=22209.85 lat (usec): min=38, max=181551, avg=33949.19, stdev=22209.43 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 8848], 10.00th=[ 13435], 20.00th=[ 17695], | 30.00th=[ 21365], 40.00th=[ 25035], 50.00th=[ 29492], 60.00th=[ 33817], | 70.00th=[ 39584], 80.00th=[ 47973], 90.00th=[ 60031], 95.00th=[ 72877], | 99.00th=[115868], 99.50th=[135267], 99.90th=[168821], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 7, max= 136, per=24.72%, avg=63.52, stdev=23.24, samples=182 iops : min= 1, max= 34, avg=15.24, stdev= 5.86, samples=182 write: IOPS=17, BW=68.4KiB/s (70.0kB/s)(6348KiB/92800msec); 0 zone resets clat (usec): min=770, max=799788, avg=26485.46, stdev=33099.23 lat (usec): min=771, max=799789, avg=26495.94, stdev=33104.18 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1254], 10.00th=[ 1500], 20.00th=[ 2966], | 30.00th=[ 5342], 40.00th=[ 11863], 50.00th=[ 20055], 60.00th=[ 26084], | 70.00th=[ 33817], 80.00th=[ 43779], 90.00th=[ 61080], 95.00th=[ 81265], | 99.00th=[122160], 99.50th=[143655], 99.90th=[191890], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 167, per=25.15%, avg=67.66, stdev=26.13, samples=182 iops : min= 1, max= 41, avg=16.29, stdev= 6.53, samples=182 lat (usec) : 50=0.20%, 100=1.66%, 250=0.13%, 500=0.03%, 1000=0.39% lat (msec) : 2=6.67%, 4=6.09%, 10=7.29%, 20=16.02%, 50=45.12% lat (msec) : 100=14.26%, 250=2.12%, 1000=0.03% cpu : usr=0.10%, sys=6.49%, ctx=6684, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179087: Sun Sep 6 23:31:25 2026 read: IOPS=16, BW=65.8KiB/s (67.4kB/s)(6028KiB/91622msec) clat (usec): min=37, max=804191, avg=34341.47, stdev=29335.66 lat (usec): min=37, max=804192, avg=34344.33, stdev=29336.69 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 9110], 10.00th=[ 13960], 20.00th=[ 17695], | 30.00th=[ 21365], 40.00th=[ 25297], 50.00th=[ 29230], 60.00th=[ 34341], | 70.00th=[ 40109], 80.00th=[ 46400], 90.00th=[ 61080], 95.00th=[ 76022], | 99.00th=[113771], 99.50th=[125305], 99.90th=[160433], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 127, per=25.53%, avg=65.60, stdev=22.04, samples=180 iops : min= 1, max= 31, avg=15.76, stdev= 5.54, samples=180 write: IOPS=17, BW=68.3KiB/s (69.0kB/s)(6260KiB/91622msec); 0 zone resets clat (usec): min=629, max=271667, avg=25239.88, stdev=26014.72 lat (usec): min=629, max=271668, avg=25247.70, stdev=26016.90 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1237], 10.00th=[ 1467], 20.00th=[ 2966], | 30.00th=[ 5407], 40.00th=[ 11076], 50.00th=[ 18482], 60.00th=[ 24773], | 70.00th=[ 32637], 80.00th=[ 45351], 90.00th=[ 60031], 95.00th=[ 77071], | 99.00th=[104334], 99.50th=[117965], 99.90th=[166724], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 159, per=25.29%, avg=68.03, stdev=26.70, samples=180 iops : min= 1, max= 39, avg=16.38, stdev= 6.71, samples=180 lat (usec) : 50=0.23%, 100=1.69%, 250=0.10%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.23% lat (msec) : 2=7.13%, 4=5.14%, 10=8.01%, 20=16.60%, 50=44.11% lat (msec) : 100=14.97%, 250=1.50%, 500=0.03%, 1000=0.03% cpu : usr=0.11%, sys=6.57%, ctx=6637, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179088: Sun Sep 6 23:31:25 2026 read: IOPS=16, BW=64.8KiB/s (66.4kB/s)(6052KiB/93393msec) clat (usec): min=32, max=172748, avg=34131.22, stdev=21865.32 lat (usec): min=32, max=172749, avg=34133.55, stdev=21864.98 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 8455], 10.00th=[ 13435], 20.00th=[ 17695], | 30.00th=[ 20841], 40.00th=[ 25035], 50.00th=[ 29230], 60.00th=[ 34866], | 70.00th=[ 41157], 80.00th=[ 49021], 90.00th=[ 60556], 95.00th=[ 73925], | 99.00th=[107480], 99.50th=[130548], 99.90th=[164627], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 15, max= 135, per=25.25%, avg=64.90, stdev=22.72, samples=183 iops : min= 3, max= 33, avg=15.59, stdev= 5.70, samples=183 write: IOPS=16, BW=66.8KiB/s (68.4kB/s)(6236KiB/93393msec); 0 zone resets clat (usec): min=997, max=747162, avg=26534.96, stdev=31574.32 lat (usec): min=998, max=747164, avg=26543.32, stdev=31573.77 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1287], 10.00th=[ 1532], 20.00th=[ 3195], | 30.00th=[ 5735], 40.00th=[ 13173], 50.00th=[ 19530], 60.00th=[ 26608], | 70.00th=[ 34341], 80.00th=[ 45876], 90.00th=[ 61080], 95.00th=[ 74974], | 99.00th=[111674], 99.50th=[143655], 99.90th=[191890], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 8, max= 144, per=24.85%, avg=66.84, stdev=25.98, samples=183 iops : min= 2, max= 36, avg=16.09, stdev= 6.53, samples=183 lat (usec) : 50=0.26%, 100=1.66%, 250=0.20%, 500=0.07%, 1000=0.07% lat (msec) : 2=6.84%, 4=5.24%, 10=7.00%, 20=17.71%, 50=43.49% lat (msec) : 100=15.72%, 250=1.73%, 750=0.03% cpu : usr=0.11%, sys=6.56%, ctx=6787, 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=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=257KiB/s (263kB/s), 64.0KiB/s-65.8KiB/s (65.5kB/s-67.4kB/s), io=23.4MiB (24.6MB), run=91622-93393msec WRITE: bw=269KiB/s (276kB/s), 66.8KiB/s-68.4KiB/s (68.4kB/s-70.0kB/s), io=24.6MiB (25.7MB), run=91622-93393msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179089: Sun Sep 6 23:31:55 2026 read: IOPS=12, BW=48.6KiB/s (49.8kB/s)(5992KiB/123218msec) clat (msec): min=4, max=817, avg=32.05, stdev=34.35 lat (msec): min=4, max=817, avg=32.05, stdev=34.35 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 69], 95.00th=[ 88], | 99.00th=[ 140], 99.50th=[ 167], 99.90th=[ 211], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 183, per=25.27%, avg=49.02, stdev=31.90, samples=239 iops : min= 1, max= 45, avg=11.59, stdev= 8.01, samples=239 write: IOPS=12, BW=51.1KiB/s (52.3kB/s)(6296KiB/123218msec); 0 zone resets clat (msec): min=10, max=266, avg=47.60, stdev=33.36 lat (msec): min=10, max=266, avg=47.60, stdev=33.36 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 56], 80.00th=[ 71], 90.00th=[ 94], 95.00th=[ 110], | 99.00th=[ 165], 99.50th=[ 203], 99.90th=[ 247], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 7, max= 159, per=24.93%, avg=50.86, stdev=30.16, samples=242 iops : min= 1, max= 39, avg=12.05, stdev= 7.58, samples=242 lat (msec) : 10=5.18%, 20=25.23%, 50=43.07%, 100=20.90%, 250=5.57% lat (msec) : 500=0.03%, 1000=0.03% cpu : usr=0.07%, sys=2.36%, ctx=4914, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179090: Sun Sep 6 23:31:55 2026 read: IOPS=12, BW=48.3KiB/s (49.4kB/s)(5940KiB/123034msec) clat (msec): min=4, max=728, avg=33.37, stdev=34.89 lat (msec): min=4, max=728, avg=33.37, stdev=34.89 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 71], 95.00th=[ 95], | 99.00th=[ 163], 99.50th=[ 184], 99.90th=[ 234], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 166, per=24.96%, avg=48.42, stdev=31.65, samples=239 iops : min= 1, max= 41, avg=11.44, stdev= 7.95, samples=239 write: IOPS=12, BW=51.6KiB/s (52.8kB/s)(6348KiB/123034msec); 0 zone resets clat (msec): min=7, max=334, avg=46.12, stdev=32.02 lat (msec): min=7, max=334, avg=46.13, stdev=32.02 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 67], 90.00th=[ 87], 95.00th=[ 107], | 99.00th=[ 155], 99.50th=[ 205], 99.90th=[ 259], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 152, per=25.14%, avg=51.29, stdev=29.48, samples=241 iops : min= 1, max= 38, avg=12.16, stdev= 7.42, samples=241 lat (msec) : 10=5.73%, 20=23.18%, 50=45.93%, 100=19.69%, 250=5.37% lat (msec) : 500=0.07%, 750=0.03% cpu : usr=0.08%, sys=2.35%, ctx=4882, 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=179091: Sun Sep 6 23:31:55 2026 read: IOPS=12, BW=49.1KiB/s (50.3kB/s)(6028KiB/122786msec) clat (msec): min=4, max=192, avg=32.35, stdev=27.06 lat (msec): min=4, max=192, avg=32.35, stdev=27.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 72], 95.00th=[ 92], | 99.00th=[ 126], 99.50th=[ 142], 99.90th=[ 188], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 7, max= 215, per=25.20%, avg=48.89, stdev=30.82, samples=241 iops : min= 1, max= 53, avg=11.56, stdev= 7.73, samples=241 write: IOPS=12, BW=50.0KiB/s (52.2kB/s)(6260KiB/122786msec); 0 zone resets clat (msec): min=9, max=735, avg=47.11, stdev=36.58 lat (msec): min=9, max=735, avg=47.11, stdev=36.58 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 69], 90.00th=[ 92], 95.00th=[ 112], | 99.00th=[ 155], 99.50th=[ 171], 99.90th=[ 338], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 150, per=24.80%, avg=50.59, stdev=30.11, samples=242 iops : min= 1, max= 37, avg=11.98, stdev= 7.58, samples=242 lat (msec) : 10=5.14%, 20=23.57%, 50=45.96%, 100=19.63%, 250=5.63% lat (msec) : 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=2.38%, ctx=4879, 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=179092: Sun Sep 6 23:31:55 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6052KiB/122467msec) clat (msec): min=4, max=226, avg=31.98, stdev=27.96 lat (msec): min=4, max=226, avg=31.98, stdev=27.96 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 45], 90.00th=[ 68], 95.00th=[ 91], | 99.00th=[ 134], 99.50th=[ 171], 99.90th=[ 201], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 7, max= 182, per=25.66%, avg=49.78, stdev=31.04, samples=237 iops : min= 1, max= 45, avg=11.78, stdev= 7.80, samples=237 write: IOPS=12, BW=50.9KiB/s (52.1kB/s)(6236KiB/122467msec); 0 zone resets clat (msec): min=9, max=738, avg=47.34, stdev=37.37 lat (msec): min=9, max=738, avg=47.35, stdev=37.38 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 55], 80.00th=[ 69], 90.00th=[ 90], 95.00th=[ 113], | 99.00th=[ 176], 99.50th=[ 203], 99.90th=[ 249], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 175, per=24.71%, avg=50.40, stdev=29.88, samples=241 iops : min= 1, max= 43, avg=11.94, stdev= 7.52, samples=241 lat (msec) : 10=4.98%, 20=24.51%, 50=45.54%, 100=19.40%, 250=5.53% lat (msec) : 750=0.03% cpu : usr=0.08%, sys=2.41%, ctx=4859, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=195KiB/s (200kB/s), 48.3KiB/s-49.4KiB/s (49.4kB/s-50.6kB/s), io=23.4MiB (24.6MB), run=122467-123218msec WRITE: bw=204KiB/s (209kB/s), 50.9KiB/s-51.6KiB/s (52.1kB/s-52.8kB/s), io=24.6MiB (25.7MB), run=122467-123218msec 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=179130: Sun Sep 6 23:32:29 2026 read: IOPS=14, BW=237KiB/s (243kB/s)(5920KiB/24969msec) clat (usec): min=44, max=245480, avg=32829.77, stdev=26097.33 lat (usec): min=44, max=245481, avg=32831.37, stdev=26097.91 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 15926], | 30.00th=[ 20055], 40.00th=[ 25035], 50.00th=[ 28443], 60.00th=[ 33817], | 70.00th=[ 39584], 80.00th=[ 48497], 90.00th=[ 63701], 95.00th=[ 73925], | 99.00th=[123208], 99.50th=[158335], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 86, max= 480, per=24.48%, avg=234.80, stdev=95.62, samples=49 iops : min= 5, max= 30, avg=14.02, stdev= 6.04, samples=49 write: IOPS=15, BW=255KiB/s (261kB/s)(6368KiB/24969msec); 0 zone resets clat (usec): min=1287, max=158573, avg=31336.16, stdev=29416.85 lat (usec): min=1289, max=158575, avg=31338.26, stdev=29416.86 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1909], 10.00th=[ 2540], 20.00th=[ 5800], | 30.00th=[ 9896], 40.00th=[ 15926], 50.00th=[ 21627], 60.00th=[ 31589], | 70.00th=[ 41681], 80.00th=[ 52691], 90.00th=[ 70779], 95.00th=[ 91751], | 99.00th=[129500], 99.50th=[156238], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 28, max= 480, per=25.13%, avg=253.55, stdev=101.44, samples=49 iops : min= 1, max= 30, avg=15.20, stdev= 6.51, samples=49 lat (usec) : 50=0.26%, 100=5.47%, 250=0.52%, 500=0.13%, 750=0.13% lat (msec) : 2=3.12%, 4=5.08%, 10=7.81%, 20=16.28%, 50=40.49% lat (msec) : 100=17.97%, 250=2.73% cpu : usr=0.12%, sys=6.70%, ctx=1774, 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=179132: Sun Sep 6 23:32:29 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(5744KiB/23755msec) clat (usec): min=44, max=126375, avg=34456.50, stdev=22295.61 lat (usec): min=45, max=126378, avg=34457.92, stdev=22295.57 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 70], 10.00th=[ 102], 20.00th=[ 19006], | 30.00th=[ 23725], 40.00th=[ 27919], 50.00th=[ 31851], 60.00th=[ 35914], | 70.00th=[ 42206], 80.00th=[ 47973], 90.00th=[ 63701], 95.00th=[ 79168], | 99.00th=[105382], 99.50th=[113771], 99.90th=[126354], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 56, max= 411, per=25.06%, avg=240.33, stdev=77.90, samples=46 iops : min= 3, max= 25, avg=14.37, stdev= 4.97, samples=46 write: IOPS=17, BW=275KiB/s (282kB/s)(6544KiB/23755msec); 0 zone resets clat (usec): min=1290, max=170767, avg=27615.01, stdev=27014.46 lat (usec): min=1291, max=170768, avg=27617.17, stdev=27014.51 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1844], 10.00th=[ 2442], 20.00th=[ 4686], | 30.00th=[ 7504], 40.00th=[ 12125], 50.00th=[ 19268], 60.00th=[ 26608], | 70.00th=[ 36963], 80.00th=[ 47449], 90.00th=[ 64226], 95.00th=[ 79168], | 99.00th=[107480], 99.50th=[108528], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 94, max= 415, per=26.64%, avg=268.85, stdev=72.59, samples=46 iops : min= 5, max= 25, avg=16.15, stdev= 4.55, samples=46 lat (usec) : 50=0.26%, 100=4.17%, 250=0.65% lat (msec) : 2=3.52%, 4=5.86%, 10=9.77%, 20=13.54%, 50=44.79% lat (msec) : 100=15.23%, 250=2.21% cpu : usr=0.09%, sys=6.94%, ctx=1651, 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=179133: Sun Sep 6 23:32:29 2026 read: IOPS=16, BW=268KiB/s (274kB/s)(6256KiB/23372msec) clat (usec): min=39, max=161153, avg=33807.45, stdev=24367.04 lat (usec): min=39, max=161154, avg=33814.42, stdev=24364.00 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 70], 10.00th=[ 227], 20.00th=[ 17171], | 30.00th=[ 22414], 40.00th=[ 26084], 50.00th=[ 30802], 60.00th=[ 35914], | 70.00th=[ 41157], 80.00th=[ 49021], 90.00th=[ 57410], 95.00th=[ 74974], | 99.00th=[122160], 99.50th=[156238], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 63, max= 480, per=28.02%, avg=268.70, stdev=88.39, samples=46 iops : min= 3, max= 30, avg=16.15, stdev= 5.63, samples=46 write: IOPS=16, BW=258KiB/s (264kB/s)(6032KiB/23372msec); 0 zone resets clat (usec): min=1127, max=149754, avg=26317.04, stdev=26371.53 lat (usec): min=1128, max=149756, avg=26319.27, stdev=26371.64 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1893], 10.00th=[ 2311], 20.00th=[ 4293], | 30.00th=[ 6980], 40.00th=[ 11600], 50.00th=[ 19006], 60.00th=[ 25822], | 70.00th=[ 32900], 80.00th=[ 43779], 90.00th=[ 61604], 95.00th=[ 85459], | 99.00th=[116917], 99.50th=[126354], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 30, max= 411, per=25.47%, avg=257.00, stdev=89.79, samples=46 iops : min= 1, max= 25, avg=15.41, stdev= 5.60, samples=46 lat (usec) : 50=0.26%, 100=4.04%, 250=0.91%, 500=0.13%, 1000=0.52% lat (msec) : 2=3.39%, 4=5.99%, 10=9.38%, 20=13.28%, 50=45.57% lat (msec) : 100=14.19%, 250=2.34% cpu : usr=0.05%, sys=6.94%, ctx=1625, 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=179134: Sun Sep 6 23:32:29 2026 read: IOPS=16, BW=264KiB/s (271kB/s)(6032KiB/22815msec) clat (usec): min=38, max=126917, avg=31607.87, stdev=21837.22 lat (usec): min=38, max=126918, avg=31612.93, stdev=21838.60 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 65], 10.00th=[ 80], 20.00th=[ 15533], | 30.00th=[ 21103], 40.00th=[ 25560], 50.00th=[ 29492], 60.00th=[ 34866], | 70.00th=[ 39584], 80.00th=[ 47449], 90.00th=[ 58459], 95.00th=[ 71828], | 99.00th=[104334], 99.50th=[120062], 99.90th=[127402], 99.95th=[127402], | 99.99th=[127402] bw ( KiB/s): min= 63, max= 416, per=27.97%, avg=268.25, stdev=78.98, samples=44 iops : min= 3, max= 26, avg=16.11, stdev= 4.98, samples=44 write: IOPS=17, BW=274KiB/s (281kB/s)(6256KiB/22815msec); 0 zone resets clat (usec): min=1305, max=144490, avg=27008.62, stdev=26292.03 lat (usec): min=1308, max=144494, avg=27010.90, stdev=26292.63 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2278], 10.00th=[ 3097], 20.00th=[ 4883], | 30.00th=[ 7046], 40.00th=[ 12780], 50.00th=[ 20579], 60.00th=[ 26084], | 70.00th=[ 33817], 80.00th=[ 45351], 90.00th=[ 64226], 95.00th=[ 80217], | 99.00th=[111674], 99.50th=[141558], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 58, max= 510, per=27.16%, avg=274.07, stdev=98.77, samples=45 iops : min= 3, max= 31, avg=16.49, stdev= 6.23, samples=45 lat (usec) : 50=0.52%, 100=5.08%, 250=0.91%, 500=0.26%, 750=0.13% lat (msec) : 2=1.82%, 4=6.51%, 10=10.29%, 20=13.54%, 50=44.14% lat (msec) : 100=14.84%, 250=1.95% cpu : usr=0.10%, sys=7.11%, ctx=1721, 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=959KiB/s (982kB/s), 237KiB/s-268KiB/s (243kB/s-274kB/s), io=23.4MiB (24.5MB), run=22815-24969msec WRITE: bw=1009KiB/s (1033kB/s), 255KiB/s-275KiB/s (261kB/s-282kB/s), io=24.6MiB (25.8MB), run=22815-24969msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179127: Sun Sep 6 23:32:37 2026 read: IOPS=11, BW=180KiB/s (185kB/s)(5920KiB/32836msec) clat (msec): min=6, max=223, avg=34.89, stdev=31.84 lat (msec): min=6, max=223, avg=34.90, stdev=31.84 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 45], 90.00th=[ 77], 95.00th=[ 105], | 99.00th=[ 180], 99.50th=[ 188], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 479, per=24.73%, avg=179.57, stdev=108.21, samples=65 iops : min= 1, max= 29, avg=10.48, stdev= 6.74, samples=65 write: IOPS=12, BW=194KiB/s (199kB/s)(6368KiB/32836msec); 0 zone resets clat (msec): min=13, max=218, avg=49.72, stdev=32.61 lat (msec): min=13, max=218, avg=49.72, stdev=32.61 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 59], 80.00th=[ 75], 90.00th=[ 92], 95.00th=[ 113], | 99.00th=[ 180], 99.50th=[ 188], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 28, max= 447, per=25.41%, avg=193.85, stdev=110.09, samples=65 iops : min= 1, max= 27, avg=11.37, stdev= 6.88, samples=65 lat (msec) : 10=3.26%, 20=21.48%, 50=48.18%, 100=20.31%, 250=6.77% cpu : usr=0.06%, sys=2.33%, ctx=1247, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179128: Sun Sep 6 23:32:37 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(5744KiB/32987msec) clat (msec): min=5, max=185, avg=33.87, stdev=26.81 lat (msec): min=5, max=185, avg=33.88, stdev=26.81 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 48], 90.00th=[ 72], 95.00th=[ 94], | 99.00th=[ 130], 99.50th=[ 133], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 28, max= 541, per=23.87%, avg=173.32, stdev=118.63, samples=65 iops : min= 1, max= 33, avg=10.08, stdev= 7.42, samples=65 write: IOPS=12, BW=198KiB/s (203kB/s)(6544KiB/32987msec); 0 zone resets clat (msec): min=13, max=248, avg=50.24, stdev=35.19 lat (msec): min=13, max=248, avg=50.25, stdev=35.19 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 59], 80.00th=[ 73], 90.00th=[ 95], 95.00th=[ 113], | 99.00th=[ 184], 99.50th=[ 207], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 28, max= 542, per=25.85%, avg=197.23, stdev=113.44, samples=65 iops : min= 1, max= 33, avg=11.58, stdev= 7.11, samples=65 lat (msec) : 10=2.86%, 20=20.44%, 50=48.83%, 100=21.88%, 250=5.99% cpu : usr=0.05%, sys=2.18%, ctx=1149, 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=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=179129: Sun Sep 6 23:32:37 2026 read: IOPS=11, BW=191KiB/s (195kB/s)(6256KiB/32820msec) clat (msec): min=6, max=235, avg=34.99, stdev=29.15 lat (msec): min=6, max=235, avg=34.99, stdev=29.15 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 50], 90.00th=[ 79], 95.00th=[ 102], | 99.00th=[ 126], 99.50th=[ 131], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 31, max= 574, per=26.71%, avg=193.92, stdev=122.47, samples=64 iops : min= 1, max= 35, avg=11.38, stdev= 7.67, samples=64 write: IOPS=11, BW=184KiB/s (188kB/s)(6032KiB/32820msec); 0 zone resets clat (msec): min=15, max=214, avg=49.98, stdev=34.13 lat (msec): min=15, max=214, avg=49.99, stdev=34.13 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 57], 80.00th=[ 73], 90.00th=[ 96], 95.00th=[ 116], | 99.00th=[ 180], 99.50th=[ 205], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 31, max= 478, per=24.38%, avg=186.00, stdev=98.59, samples=64 iops : min= 1, max= 29, avg=10.88, stdev= 6.18, samples=64 lat (msec) : 10=3.26%, 20=20.57%, 50=48.96%, 100=20.18%, 250=7.03% cpu : usr=0.08%, sys=2.07%, ctx=1175, 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=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=179131: Sun Sep 6 23:32:37 2026 read: IOPS=11, BW=184KiB/s (189kB/s)(6032KiB/32717msec) clat (msec): min=6, max=160, avg=34.90, stdev=27.36 lat (msec): min=6, max=160, avg=34.90, stdev=27.36 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 78], 95.00th=[ 99], | 99.00th=[ 129], 99.50th=[ 140], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 31, max= 447, per=26.04%, avg=189.03, stdev=108.20, samples=62 iops : min= 1, max= 27, avg=11.06, stdev= 6.82, samples=62 write: IOPS=11, BW=191KiB/s (196kB/s)(6256KiB/32717msec); 0 zone resets clat (msec): min=13, max=258, avg=48.99, stdev=35.90 lat (msec): min=13, max=258, avg=48.99, stdev=35.90 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 53], 80.00th=[ 72], 90.00th=[ 96], 95.00th=[ 121], | 99.00th=[ 161], 99.50th=[ 249], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 63, max= 574, per=25.24%, avg=192.56, stdev=112.11, samples=63 iops : min= 3, max= 35, avg=11.29, stdev= 7.05, samples=63 lat (msec) : 10=3.52%, 20=20.44%, 50=49.22%, 100=20.44%, 250=6.25% lat (msec) : 500=0.13% cpu : usr=0.09%, sys=2.37%, ctx=1219, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=726KiB/s (744kB/s), 174KiB/s-191KiB/s (178kB/s-195kB/s), io=23.4MiB (24.5MB), run=32717-32987msec WRITE: bw=764KiB/s (782kB/s), 184KiB/s-198KiB/s (188kB/s-203kB/s), io=24.6MiB (25.8MB), run=32717-32987msec 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=179148: Sun Sep 6 23:32:47 2026 read: IOPS=3, BW=3436KiB/s (3519kB/s)(7168KiB/2086msec) clat (usec): min=484, max=405115, avg=166439.95, stdev=142934.83 lat (usec): min=485, max=405117, avg=166441.63, stdev=142934.86 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 13698], | 30.00th=[137364], 40.00th=[137364], 50.00th=[156238], 60.00th=[168821], | 70.00th=[168821], 80.00th=[283116], 90.00th=[404751], 95.00th=[404751], | 99.00th=[404751], 99.50th=[404751], 99.90th=[404751], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 1973, max= 4096, per=52.55%, avg=2991.00, stdev=1064.17, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=2, BW=2454KiB/s (2513kB/s)(5120KiB/2086msec); 0 zone resets clat (msec): min=126, max=223, avg=154.61, stdev=39.32 lat (msec): min=126, max=223, avg=154.72, stdev=39.32 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 153], 90.00th=[ 224], 95.00th=[ 224], | 99.00th=[ 224], 99.50th=[ 224], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 1973, max= 4096, per=38.08%, avg=3034.50, stdev=1501.19, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 lat (usec) : 500=8.33% lat (msec) : 20=8.33%, 250=66.67%, 500=16.67% cpu : usr=0.05%, sys=19.71%, ctx=170, 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=179149: Sun Sep 6 23:32:47 2026 read: IOPS=0, BW=569KiB/s (583kB/s)(2048KiB/3598msec) clat (msec): min=170, max=187, avg=179.25, stdev=11.75 lat (msec): min=170, max=187, avg=179.25, stdev=11.75 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 171], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 188], 90.00th=[ 188], 95.00th=[ 188], | 99.00th=[ 188], 99.50th=[ 188], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 1481, max= 2007, per=30.64%, avg=1744.00, stdev=371.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2846KiB/s (2914kB/s)(10.0MiB/3598msec); 0 zone resets clat (msec): min=99, max=613, avg=304.89, stdev=181.66 lat (msec): min=99, max=613, avg=305.06, stdev=181.65 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 186], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 309], 80.00th=[ 430], 90.00th=[ 575], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2007, max= 4096, per=35.46%, avg=2825.40, stdev=1092.80, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=16.54%, ctx=187, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179150: Sun Sep 6 23:32:47 2026 read: IOPS=2, BW=2333KiB/s (2389kB/s)(6144KiB/2634msec) clat (usec): min=433, max=295039, avg=108373.70, stdev=120002.81 lat (usec): min=435, max=295041, avg=108375.30, stdev=120002.96 clat percentiles (usec): | 1.00th=[ 433], 5.00th=[ 433], 10.00th=[ 433], 20.00th=[ 586], | 30.00th=[ 586], 40.00th=[ 22938], 50.00th=[ 22938], 60.00th=[160433], | 70.00th=[170918], 80.00th=[170918], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 4015, max= 6144, per=89.24%, avg=5079.50, stdev=1505.43, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2333KiB/s (2389kB/s)(6144KiB/2634msec); 0 zone resets clat (msec): min=153, max=506, avg=316.13, stdev=142.56 lat (msec): min=153, max=507, avg=316.24, stdev=142.58 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 363], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 1973, max= 2756, per=27.56%, avg=2196.00, stdev=374.59, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 50=8.33%, 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=14.39%, ctx=114, 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=179151: Sun Sep 6 23:32:47 2026 read: IOPS=1, BW=1695KiB/s (1735kB/s)(5120KiB/3021msec) clat (usec): min=457, max=169187, avg=64701.66, stdev=86389.59 lat (usec): min=459, max=169188, avg=64702.94, stdev=86389.60 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[ 457], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 4555], 60.00th=[ 4555], | 70.00th=[147850], 80.00th=[147850], 90.00th=[168821], 95.00th=[168821], | 99.00th=[168821], 99.50th=[168821], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2373KiB/s (2430kB/s)(7168KiB/3021msec); 0 zone resets clat (msec): min=124, max=697, avg=359.91, stdev=233.22 lat (msec): min=124, max=697, avg=360.32, stdev=233.31 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 144], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 393], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 609], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1521, max= 2048, per=24.06%, avg=1916.80, stdev=223.12, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 10=8.33%, 250=41.67%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=12.81%, ctx=114, 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=5692KiB/s (5829kB/s), 569KiB/s-3436KiB/s (583kB/s-3519kB/s), io=20.0MiB (20.0MB), run=2086-3598msec WRITE: bw=7969KiB/s (8160kB/s), 2333KiB/s-2846KiB/s (2389kB/s-2914kB/s), io=28.0MiB (29.4MB), run=2086-3598msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179144: Sun Sep 6 23:32:48 2026 read: IOPS=1, BW=1915KiB/s (1961kB/s)(7168KiB/3743msec) clat (msec): min=67, max=549, avg=210.13, stdev=168.78 lat (msec): min=67, max=549, avg=210.13, stdev=168.78 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 77], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 165], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 262], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1976, max= 4063, per=50.30%, avg=2752.00, stdev=973.84, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1368KiB/s (1401kB/s)(5120KiB/3743msec); 0 zone resets clat (msec): min=279, max=711, avg=437.65, stdev=182.53 lat (msec): min=279, max=711, avg=437.74, stdev=182.53 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 535], 80.00th=[ 535], 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= 1976, max= 2048, per=26.43%, avg=2024.20, stdev=29.10, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=4.73%, ctx=81, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179145: Sun Sep 6 23:32:48 2026 read: IOPS=0, BW=583KiB/s (597kB/s)(2048KiB/3510msec) clat (msec): min=44, max=104, avg=74.09, stdev=42.49 lat (msec): min=44, max=104, avg=74.10, stdev=42.49 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 45], | 30.00th=[ 45], 40.00th=[ 45], 50.00th=[ 45], 60.00th=[ 105], | 70.00th=[ 105], 80.00th=[ 105], 90.00th=[ 105], 95.00th=[ 105], | 99.00th=[ 105], 99.50th=[ 105], 99.90th=[ 105], 99.95th=[ 105], | 99.99th=[ 105] bw ( KiB/s): min= 1440, max= 2043, per=31.83%, avg=1741.50, stdev=426.39, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2917KiB/s (2987kB/s)(10.0MiB/3510msec); 0 zone resets clat (msec): min=77, max=607, avg=332.46, stdev=151.76 lat (msec): min=77, max=607, avg=332.57, stdev=151.75 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 190], | 30.00th=[ 205], 40.00th=[ 300], 50.00th=[ 338], 60.00th=[ 355], | 70.00th=[ 376], 80.00th=[ 401], 90.00th=[ 481], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1976, max= 4096, per=39.30%, avg=3010.00, stdev=1039.82, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.30, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=4.42%, ctx=64, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179146: Sun Sep 6 23:32:48 2026 read: IOPS=1, BW=1900KiB/s (1946kB/s)(6144KiB/3233msec) clat (msec): min=80, max=301, avg=139.20, stdev=90.76 lat (msec): min=80, max=301, avg=139.20, stdev=90.76 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 82], | 30.00th=[ 82], 40.00th=[ 88], 50.00th=[ 88], 60.00th=[ 91], | 70.00th=[ 194], 80.00th=[ 194], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 4063, max= 4071, per=74.34%, avg=4067.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1900KiB/s (1946kB/s)(6144KiB/3233msec); 0 zone resets clat (msec): min=229, max=418, avg=359.49, stdev=67.72 lat (msec): min=230, max=418, avg=359.60, stdev=67.70 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 393], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 1393, max= 2043, per=24.29%, avg=1860.75, stdev=313.19, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=33.33%, 250=16.67%, 500=50.00% cpu : usr=0.00%, sys=8.17%, 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=179147: Sun Sep 6 23:32:48 2026 read: IOPS=1, BW=1840KiB/s (1884kB/s)(5120KiB/2783msec) clat (msec): min=77, max=250, avg=129.48, stdev=72.46 lat (msec): min=77, max=250, avg=129.48, stdev=72.46 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 83], 40.00th=[ 83], 50.00th=[ 94], 60.00th=[ 94], | 70.00th=[ 142], 80.00th=[ 142], 90.00th=[ 251], 95.00th=[ 251], | 99.00th=[ 251], 99.50th=[ 251], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 3953, max= 4063, per=73.26%, avg=4008.00, stdev=77.78, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2576KiB/s (2637kB/s)(7168KiB/2783msec); 0 zone resets clat (msec): min=142, max=742, avg=298.08, stdev=204.91 lat (msec): min=143, max=743, avg=298.36, stdev=204.76 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 188], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 209], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 317], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1976, max= 4047, per=35.05%, avg=2684.67, stdev=1180.14, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.07%, sys=5.14%, ctx=63, 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=5472KiB/s (5603kB/s), 583KiB/s-1915KiB/s (597kB/s-1961kB/s), io=20.0MiB (20.0MB), run=2783-3743msec WRITE: bw=7660KiB/s (7844kB/s), 1368KiB/s-2917KiB/s (1401kB/s-2987kB/s), io=28.0MiB (29.4MB), run=2783-3743msec 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=179158: Sun Sep 6 23:32:57 2026 read: IOPS=1, BW=5548KiB/s (5681kB/s)(12.0MiB/2215msec) clat (msec): min=620, max=750, avg=684.75, stdev=64.82 lat (msec): min=620, max=750, avg=684.75, stdev=64.82 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=18.20%, ctx=598, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179159: Sun Sep 6 23:32:57 2026 read: IOPS=0, BW=1911KiB/s (1957kB/s)(4096KiB/2143msec) clat (nsec): min=749651k, max=749651k, avg=749650752.00, stdev= 0.00 lat (nsec): min=749654k, max=749654k, avg=749653601.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3823KiB/s (3914kB/s)(8192KiB/2143msec); 0 zone resets clat (msec): min=320, max=833, avg=576.64, stdev=362.62 lat (msec): min=320, max=833, avg=577.08, stdev=362.23 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=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=8.50%, ctx=209, 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=179161: Sun Sep 6 23:32:57 2026 write: IOPS=1, BW=4411KiB/s (4516kB/s)(12.0MiB/2786msec); 0 zone resets clat (msec): min=232, max=2160, avg=894.95, stdev=1096.29 lat (msec): min=232, max=2161, avg=896.73, stdev=1095.40 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] 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) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.67%, ctx=66, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179163: Sun Sep 6 23:32:57 2026 write: IOPS=1, BW=4945KiB/s (5064kB/s)(12.0MiB/2485msec); 0 zone resets clat (msec): min=353, max=1406, avg=774.48, stdev=557.25 lat (msec): min=353, max=1406, avg=774.85, stdev=557.24 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8159, max= 8192, per=69.51%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.27%, ctx=52, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7397KiB/s (7574kB/s), 1911KiB/s-5548KiB/s (1957kB/s-5681kB/s), io=16.0MiB (16.8MB), run=2143-2215msec WRITE: bw=11.5MiB/s (12.0MB/s), 3823KiB/s-4945KiB/s (3914kB/s-5064kB/s), io=32.0MiB (33.6MB), run=2143-2786msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179160: Sun Sep 6 23:32:58 2026 read: IOPS=2, BW=10.6MiB/s (11.1MB/s)(12.0MiB/1134msec) clat (msec): min=161, max=651, avg=346.78, stdev=265.89 lat (msec): min=161, max=651, avg=346.78, stdev=265.89 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 228], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min=12740, max=12740, per=100.00%, avg=12740.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 750=33.33% cpu : usr=0.00%, sys=10.06%, ctx=81, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179162: Sun Sep 6 23:32:58 2026 read: IOPS=0, BW=1456KiB/s (1491kB/s)(4096KiB/2813msec) clat (nsec): min=836379k, max=836379k, avg=836378995.00, stdev= 0.00 lat (nsec): min=836380k, max=836380k, avg=836380163.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7984, max= 7984, per=100.00%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2912KiB/s (2982kB/s)(8192KiB/2813msec); 0 zone resets clat (msec): min=484, max=1352, avg=918.53, stdev=614.22 lat (msec): min=484, max=1353, avg=919.11, stdev=613.98 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 1351], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7984, max= 7984, per=76.59%, avg=7984.00, 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=5.01%, ctx=78, 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=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=179164: Sun Sep 6 23:32:58 2026 write: IOPS=0, BW=3910KiB/s (4003kB/s)(12.0MiB/3143msec); 0 zone resets clat (msec): min=144, max=2654, avg=991.98, stdev=1439.66 lat (msec): min=145, max=2654, avg=992.51, stdev=1439.60 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 178], | 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] lat (msec) : 250=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=5.19%, ctx=57, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179165: Sun Sep 6 23:32:58 2026 write: IOPS=1, BW=7070KiB/s (7240kB/s)(12.0MiB/1738msec); 0 zone resets clat (msec): min=238, max=985, avg=537.24, stdev=395.28 lat (msec): min=239, max=989, avg=539.06, stdev=397.13 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 986], 80.00th=[ 986], 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= 7501, max= 7984, per=74.27%, avg=7742.50, stdev=341.53, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=7.71%, ctx=63, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5824KiB/s (5964kB/s), 1456KiB/s-10.6MiB/s (1491kB/s-11.1MB/s), io=16.0MiB (16.8MB), run=1134-2813msec WRITE: bw=10.2MiB/s (10.7MB/s), 2912KiB/s-7070KiB/s (2982kB/s-7240kB/s), io=32.0MiB (33.6MB), run=1738-3143msec