== sanity test 398b: DIO and buffer IO race ============== 18:50:03 (1787439003) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.1103 s, 9.8 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=179354: Sat Aug 22 18:52:15 2026 read: IOPS=13, BW=54.9KiB/s (56.3kB/s)(5992KiB/109071msec) clat (usec): min=31, max=634685, avg=40067.37, stdev=32649.47 lat (usec): min=31, max=634686, avg=40088.45, stdev=32704.52 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 105], 10.00th=[ 13042], 20.00th=[ 18482], | 30.00th=[ 23200], 40.00th=[ 28443], 50.00th=[ 33162], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 58459], 90.00th=[ 71828], 95.00th=[ 91751], | 99.00th=[147850], 99.50th=[168821], 99.90th=[274727], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 125, per=25.92%, avg=54.69, stdev=22.95, samples=214 iops : min= 1, max= 31, avg=13.04, stdev= 5.79, samples=214 write: IOPS=14, BW=57.7KiB/s (59.1kB/s)(6296KiB/109071msec); 0 zone resets clat (usec): min=643, max=306513, avg=31045.78, stdev=34693.17 lat (usec): min=644, max=306515, avg=31049.95, stdev=34690.99 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1123], 10.00th=[ 1287], 20.00th=[ 2900], | 30.00th=[ 6259], 40.00th=[ 13698], 50.00th=[ 21627], 60.00th=[ 29754], | 70.00th=[ 38011], 80.00th=[ 51643], 90.00th=[ 76022], 95.00th=[100140], | 99.00th=[147850], 99.50th=[189793], 99.90th=[265290], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 151, per=25.98%, avg=57.42, stdev=25.60, samples=214 iops : min= 1, max= 37, avg=13.71, stdev= 6.41, samples=214 lat (usec) : 50=0.46%, 100=1.92%, 250=0.13%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.46% lat (msec) : 2=7.39%, 4=4.49%, 10=6.90%, 20=14.19%, 50=40.10% lat (msec) : 100=19.60%, 250=4.07%, 500=0.16%, 750=0.03% cpu : usr=0.08%, sys=4.97%, ctx=6201, 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=179355: Sat Aug 22 18:52:15 2026 read: IOPS=13, BW=53.4KiB/s (54.6kB/s)(5940KiB/111330msec) clat (usec): min=35, max=584324, avg=42031.53, stdev=32962.50 lat (usec): min=36, max=584325, avg=42036.36, stdev=32961.51 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 5932], 10.00th=[ 13829], 20.00th=[ 19006], | 30.00th=[ 24511], 40.00th=[ 30016], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 50070], 80.00th=[ 59507], 90.00th=[ 77071], 95.00th=[ 93848], | 99.00th=[158335], 99.50th=[189793], 99.90th=[256902], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 6, max= 127, per=25.18%, avg=53.12, stdev=22.59, samples=218 iops : min= 1, max= 31, avg=12.64, stdev= 5.67, samples=218 write: IOPS=14, BW=57.0KiB/s (58.4kB/s)(6348KiB/111330msec); 0 zone resets clat (usec): min=757, max=292019, avg=30736.50, stdev=34335.60 lat (usec): min=757, max=292021, avg=30737.85, stdev=34335.61 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 1106], 10.00th=[ 1254], 20.00th=[ 2376], | 30.00th=[ 5473], 40.00th=[ 11994], 50.00th=[ 21103], 60.00th=[ 30016], | 70.00th=[ 39584], 80.00th=[ 52167], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[156238], 99.50th=[183501], 99.90th=[250610], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 135, per=25.65%, avg=56.68, stdev=24.90, samples=218 iops : min= 1, max= 33, avg=13.54, stdev= 6.28, samples=218 lat (usec) : 50=0.39%, 100=1.76%, 250=0.10%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.52% lat (msec) : 2=8.53%, 4=4.17%, 10=6.97%, 20=12.89%, 50=38.77% lat (msec) : 100=21.48%, 250=4.20%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=5.09%, ctx=6170, 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=179356: Sat Aug 22 18:52:15 2026 read: IOPS=13, BW=55.1KiB/s (56.4kB/s)(6028KiB/109439msec) clat (usec): min=33, max=252285, avg=39694.30, stdev=29435.12 lat (usec): min=33, max=252285, avg=39696.19, stdev=29435.16 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 71], 10.00th=[ 13173], 20.00th=[ 18482], | 30.00th=[ 22938], 40.00th=[ 27919], 50.00th=[ 32637], 60.00th=[ 39584], | 70.00th=[ 46400], 80.00th=[ 56886], 90.00th=[ 74974], 95.00th=[ 93848], | 99.00th=[143655], 99.50th=[168821], 99.90th=[238027], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 7, max= 136, per=26.00%, avg=54.86, stdev=23.00, samples=215 iops : min= 1, max= 34, avg=13.07, stdev= 5.79, samples=215 write: IOPS=14, BW=57.2KiB/s (58.6kB/s)(6260KiB/109439msec); 0 zone resets clat (usec): min=610, max=627677, avg=31632.75, stdev=38296.96 lat (usec): min=611, max=627679, avg=31636.46, stdev=38299.66 clat percentiles (usec): | 1.00th=[ 963], 5.00th=[ 1123], 10.00th=[ 1237], 20.00th=[ 2573], | 30.00th=[ 5276], 40.00th=[ 11994], 50.00th=[ 20841], 60.00th=[ 29754], | 70.00th=[ 40109], 80.00th=[ 54264], 90.00th=[ 77071], 95.00th=[ 98042], | 99.00th=[147850], 99.50th=[217056], 99.90th=[254804], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 7, max= 168, per=25.76%, avg=56.93, stdev=25.32, samples=215 iops : min= 1, max= 42, avg=13.60, stdev= 6.38, samples=215 lat (usec) : 50=0.65%, 100=2.08%, 250=0.29%, 500=0.03%, 750=0.13% lat (usec) : 1000=0.62% lat (msec) : 2=7.75%, 4=4.56%, 10=6.90%, 20=13.57%, 50=39.36% lat (msec) : 100=19.69%, 250=4.20%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=4.98%, ctx=6122, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179357: Sat Aug 22 18:52:15 2026 read: IOPS=13, BW=53.3KiB/s (54.6kB/s)(6052KiB/113595msec) clat (usec): min=36, max=404122, avg=41278.45, stdev=29935.39 lat (usec): min=36, max=404122, avg=41279.78, stdev=29935.46 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 9110], 10.00th=[ 14877], 20.00th=[ 19792], | 30.00th=[ 24249], 40.00th=[ 29492], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 49021], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[147850], 99.50th=[173016], 99.90th=[227541], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 7, max= 127, per=25.24%, avg=53.25, stdev=21.78, samples=222 iops : min= 1, max= 31, avg=12.68, stdev= 5.49, samples=222 write: IOPS=13, BW=54.9KiB/s (56.2kB/s)(6236KiB/113595msec); 0 zone resets clat (usec): min=572, max=630844, avg=32730.49, stdev=39078.73 lat (usec): min=573, max=630845, avg=32732.54, stdev=39078.30 clat percentiles (usec): | 1.00th=[ 906], 5.00th=[ 1106], 10.00th=[ 1254], 20.00th=[ 2343], | 30.00th=[ 5538], 40.00th=[ 13042], 50.00th=[ 22414], 60.00th=[ 31327], | 70.00th=[ 41681], 80.00th=[ 56886], 90.00th=[ 79168], 95.00th=[102237], | 99.00th=[164627], 99.50th=[179307], 99.90th=[329253], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 148, per=24.72%, avg=54.62, stdev=23.72, samples=223 iops : min= 1, max= 37, avg=13.02, stdev= 6.01, samples=223 lat (usec) : 50=0.46%, 100=1.56%, 250=0.07%, 750=0.10%, 1000=0.88% lat (msec) : 2=8.17%, 4=4.20%, 10=5.92%, 20=12.89%, 50=39.49% lat (msec) : 100=21.91%, 250=4.23%, 500=0.10%, 750=0.03% cpu : usr=0.06%, sys=4.83%, ctx=6288, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=211KiB/s (216kB/s), 53.3KiB/s-55.1KiB/s (54.6kB/s-56.4kB/s), io=23.4MiB (24.6MB), run=109071-113595msec WRITE: bw=221KiB/s (227kB/s), 54.9KiB/s-57.7KiB/s (56.2kB/s-59.1kB/s), io=24.6MiB (25.7MB), run=109071-113595msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179348: Sat Aug 22 18:52:55 2026 read: IOPS=9, BW=38.9KiB/s (39.8kB/s)(5992KiB/154058msec) clat (msec): min=4, max=692, avg=39.62, stdev=39.28 lat (msec): min=4, max=692, avg=39.63, stdev=39.28 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 57], 90.00th=[ 88], 95.00th=[ 112], | 99.00th=[ 178], 99.50th=[ 211], 99.90th=[ 321], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 150, per=25.21%, avg=39.08, stdev=26.52, samples=298 iops : min= 1, max= 37, avg= 9.14, stdev= 6.69, samples=298 write: IOPS=10, BW=40.9KiB/s (41.8kB/s)(6296KiB/154058msec); 0 zone resets clat (msec): min=9, max=415, avg=59.86, stdev=44.49 lat (msec): min=9, max=415, avg=59.87, stdev=44.50 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 68], 80.00th=[ 86], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 224], 99.50th=[ 271], 99.90th=[ 405], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 143, per=24.85%, avg=40.51, stdev=25.02, samples=302 iops : min= 1, max= 35, avg= 9.49, stdev= 6.30, samples=302 lat (msec) : 10=3.16%, 20=16.08%, 50=45.44%, 100=24.77%, 250=10.16% lat (msec) : 500=0.36%, 750=0.03% cpu : usr=0.06%, sys=1.72%, ctx=4642, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179349: Sat Aug 22 18:52:55 2026 read: IOPS=9, BW=38.6KiB/s (39.5kB/s)(5940KiB/153918msec) clat (msec): min=5, max=673, avg=38.79, stdev=38.72 lat (msec): min=5, max=673, avg=38.79, stdev=38.72 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 87], 95.00th=[ 110], | 99.00th=[ 176], 99.50th=[ 197], 99.90th=[ 288], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 165, per=25.23%, avg=39.10, stdev=26.79, samples=296 iops : min= 1, max= 41, avg= 9.15, stdev= 6.75, samples=296 write: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6348KiB/153918msec); 0 zone resets clat (msec): min=8, max=367, avg=60.40, stdev=43.48 lat (msec): min=8, max=367, avg=60.40, stdev=43.48 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 69], 80.00th=[ 86], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 228], 99.50th=[ 271], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 132, per=25.06%, avg=40.84, stdev=24.22, samples=303 iops : min= 1, max= 33, avg= 9.58, stdev= 6.12, samples=303 lat (msec) : 10=2.70%, 20=18.00%, 50=44.08%, 100=24.74%, 250=9.90% lat (msec) : 500=0.55%, 750=0.03% cpu : usr=0.07%, sys=1.75%, ctx=4617, 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=179350: Sat Aug 22 18:52:55 2026 read: IOPS=9, BW=39.2KiB/s (40.1kB/s)(6028KiB/153799msec) clat (msec): min=5, max=350, avg=40.20, stdev=38.12 lat (msec): min=5, max=350, avg=40.20, stdev=38.12 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 87], 95.00th=[ 123], | 99.00th=[ 180], 99.50th=[ 215], 99.90th=[ 338], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 159, per=25.40%, avg=39.38, stdev=27.41, samples=297 iops : min= 1, max= 39, avg= 9.22, stdev= 6.91, samples=297 write: IOPS=10, BW=40.7KiB/s (41.7kB/s)(6260KiB/153799msec); 0 zone resets clat (msec): min=9, max=698, avg=59.28, stdev=45.93 lat (msec): min=9, max=698, avg=59.28, stdev=45.93 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 67], 80.00th=[ 83], 90.00th=[ 111], 95.00th=[ 140], | 99.00th=[ 228], 99.50th=[ 262], 99.90th=[ 430], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 127, per=24.89%, avg=40.57, stdev=24.73, samples=299 iops : min= 1, max= 31, avg= 9.52, stdev= 6.24, samples=299 lat (msec) : 10=3.84%, 20=16.41%, 50=44.89%, 100=24.67%, 250=9.67% lat (msec) : 500=0.49%, 750=0.03% cpu : usr=0.06%, sys=1.58%, ctx=4497, 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=179351: Sat Aug 22 18:52:55 2026 read: IOPS=9, BW=39.3KiB/s (40.3kB/s)(6052KiB/153906msec) clat (msec): min=5, max=348, avg=39.80, stdev=36.53 lat (msec): min=5, max=348, avg=39.81, stdev=36.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 58], 90.00th=[ 89], 95.00th=[ 112], | 99.00th=[ 188], 99.50th=[ 205], 99.90th=[ 259], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 151, per=25.89%, avg=40.13, stdev=26.35, samples=294 iops : min= 1, max= 37, avg= 9.40, stdev= 6.64, samples=294 write: IOPS=10, BW=40.5KiB/s (41.5kB/s)(6236KiB/153906msec); 0 zone resets clat (msec): min=11, max=692, avg=59.80, stdev=46.91 lat (msec): min=11, max=692, avg=59.80, stdev=46.91 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 68], 80.00th=[ 84], 90.00th=[ 115], 95.00th=[ 144], | 99.00th=[ 232], 99.50th=[ 271], 99.90th=[ 443], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 143, per=24.70%, avg=40.25, stdev=25.08, samples=302 iops : min= 1, max= 35, avg= 9.43, stdev= 6.32, samples=302 lat (msec) : 10=2.70%, 20=17.61%, 50=45.48%, 100=23.24%, 250=10.58% lat (msec) : 500=0.36%, 750=0.03% cpu : usr=0.06%, sys=1.70%, ctx=4554, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=156KiB/s (160kB/s), 38.6KiB/s-39.3KiB/s (39.5kB/s-40.3kB/s), io=23.4MiB (24.6MB), run=153799-154058msec WRITE: bw=163KiB/s (167kB/s), 40.5KiB/s-41.2KiB/s (41.5kB/s-42.2kB/s), io=24.6MiB (25.7MB), run=153799-154058msec 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=179394: Sat Aug 22 18:53:26 2026 read: IOPS=16, BW=263KiB/s (269kB/s)(5920KiB/22530msec) clat (usec): min=40, max=130141, avg=32707.17, stdev=23158.28 lat (usec): min=40, max=130142, avg=32708.37, stdev=23158.27 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 94], 20.00th=[ 16319], | 30.00th=[ 19792], 40.00th=[ 23725], 50.00th=[ 28705], 60.00th=[ 34341], | 70.00th=[ 41157], 80.00th=[ 47449], 90.00th=[ 61604], 95.00th=[ 77071], | 99.00th=[117965], 99.50th=[123208], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 127, max= 415, per=24.33%, avg=258.66, stdev=70.48, samples=44 iops : min= 7, max= 25, avg=15.48, stdev= 4.43, samples=44 write: IOPS=17, BW=283KiB/s (289kB/s)(6368KiB/22530msec); 0 zone resets clat (usec): min=1016, max=126032, avg=26025.55, stdev=24196.67 lat (usec): min=1017, max=126034, avg=26041.91, stdev=24204.98 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1745], 10.00th=[ 2278], 20.00th=[ 3916], | 30.00th=[ 7373], 40.00th=[ 13698], 50.00th=[ 19530], 60.00th=[ 26346], | 70.00th=[ 33817], 80.00th=[ 43779], 90.00th=[ 61604], 95.00th=[ 80217], | 99.00th=[ 93848], 99.50th=[107480], 99.90th=[126354], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 64, max= 506, per=25.21%, avg=281.80, stdev=91.84, samples=44 iops : min= 4, max= 31, avg=16.93, stdev= 5.72, samples=44 lat (usec) : 50=0.78%, 100=4.17%, 250=0.26%, 500=0.13%, 1000=0.26% lat (msec) : 2=4.30%, 4=6.38%, 10=8.33%, 20=16.41%, 50=42.06% lat (msec) : 100=15.89%, 250=1.04% cpu : usr=0.09%, sys=7.12%, ctx=1710, 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=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=179395: Sat Aug 22 18:53:26 2026 read: IOPS=16, BW=259KiB/s (265kB/s)(5744KiB/22200msec) clat (usec): min=35, max=139992, avg=32154.05, stdev=22817.42 lat (usec): min=36, max=139993, avg=32155.24, stdev=22817.42 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 90], 20.00th=[ 16188], | 30.00th=[ 20841], 40.00th=[ 23987], 50.00th=[ 28181], 60.00th=[ 32900], | 70.00th=[ 38536], 80.00th=[ 46924], 90.00th=[ 57410], 95.00th=[ 74974], | 99.00th=[115868], 99.50th=[135267], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 64, max= 441, per=24.33%, avg=258.66, stdev=90.26, samples=44 iops : min= 4, max= 27, avg=15.48, stdev= 5.61, samples=44 write: IOPS=18, BW=295KiB/s (302kB/s)(6544KiB/22200msec); 0 zone resets clat (usec): min=1318, max=198840, avg=25674.22, stdev=26106.44 lat (usec): min=1320, max=198842, avg=25676.20, stdev=26106.82 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1762], 10.00th=[ 2147], 20.00th=[ 3556], | 30.00th=[ 5669], 40.00th=[ 11076], 50.00th=[ 18220], 60.00th=[ 25035], | 70.00th=[ 35390], 80.00th=[ 48497], 90.00th=[ 60031], 95.00th=[ 74974], | 99.00th=[ 99091], 99.50th=[126354], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 544, per=26.27%, avg=293.75, stdev=103.92, samples=44 iops : min= 1, max= 34, avg=17.68, stdev= 6.56, samples=44 lat (usec) : 50=0.65%, 100=4.30%, 250=0.13% lat (msec) : 2=4.43%, 4=7.42%, 10=8.72%, 20=15.89%, 50=41.67% lat (msec) : 100=15.49%, 250=1.30% cpu : usr=0.10%, sys=7.32%, ctx=1687, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179396: Sat Aug 22 18:53:26 2026 read: IOPS=17, BW=283KiB/s (290kB/s)(6256KiB/22095msec) clat (usec): min=37, max=118318, avg=31240.02, stdev=20524.54 lat (usec): min=39, max=118319, avg=31241.18, stdev=20524.55 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 111], 20.00th=[ 16712], | 30.00th=[ 20579], 40.00th=[ 25035], 50.00th=[ 28443], 60.00th=[ 32113], | 70.00th=[ 39060], 80.00th=[ 47449], 90.00th=[ 55837], 95.00th=[ 65799], | 99.00th=[ 98042], 99.50th=[102237], 99.90th=[117965], 99.95th=[117965], | 99.99th=[117965] bw ( KiB/s): min= 94, max= 507, per=26.98%, avg=286.79, stdev=91.30, samples=43 iops : min= 5, max= 31, avg=17.26, stdev= 5.78, samples=43 write: IOPS=17, BW=273KiB/s (280kB/s)(6032KiB/22095msec); 0 zone resets clat (usec): min=1374, max=188104, avg=25664.08, stdev=25193.55 lat (usec): min=1375, max=188107, avg=25666.08, stdev=25193.59 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1713], 10.00th=[ 2114], 20.00th=[ 4047], | 30.00th=[ 6259], 40.00th=[ 11863], 50.00th=[ 19006], 60.00th=[ 25822], | 70.00th=[ 33162], 80.00th=[ 43779], 90.00th=[ 61080], 95.00th=[ 72877], | 99.00th=[114820], 99.50th=[115868], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 127, max= 509, per=24.39%, avg=272.70, stdev=85.90, samples=43 iops : min= 7, max= 31, avg=16.37, stdev= 5.34, samples=43 lat (usec) : 50=0.13%, 100=4.82%, 250=0.91% lat (msec) : 2=4.69%, 4=5.08%, 10=9.11%, 20=15.23%, 50=44.14% lat (msec) : 100=14.97%, 250=0.91% cpu : usr=0.07%, sys=7.34%, ctx=1690, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179397: Sat Aug 22 18:53:26 2026 read: IOPS=16, BW=270KiB/s (276kB/s)(6032KiB/22365msec) clat (usec): min=41, max=147468, avg=32299.74, stdev=23809.44 lat (usec): min=41, max=147469, avg=32306.22, stdev=23802.65 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 69], 20.00th=[ 14615], | 30.00th=[ 19530], 40.00th=[ 24249], 50.00th=[ 28705], 60.00th=[ 33817], | 70.00th=[ 43254], 80.00th=[ 49546], 90.00th=[ 60031], 95.00th=[ 71828], | 99.00th=[114820], 99.50th=[137364], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 159, max= 448, per=25.15%, avg=267.39, stdev=60.56, samples=44 iops : min= 9, max= 28, avg=16.05, stdev= 3.89, samples=44 write: IOPS=17, BW=280KiB/s (286kB/s)(6256KiB/22365msec); 0 zone resets clat (usec): min=1412, max=190592, avg=25630.93, stdev=26957.75 lat (usec): min=1413, max=190594, avg=25633.05, stdev=26957.69 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1729], 10.00th=[ 2376], 20.00th=[ 3982], | 30.00th=[ 6718], 40.00th=[ 10683], 50.00th=[ 16909], 60.00th=[ 23725], | 70.00th=[ 31065], 80.00th=[ 43254], 90.00th=[ 63177], 95.00th=[ 74974], | 99.00th=[121111], 99.50th=[139461], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 95, max= 508, per=25.00%, avg=279.45, stdev=103.11, samples=44 iops : min= 5, max= 31, avg=16.77, stdev= 6.43, samples=44 lat (usec) : 50=0.65%, 100=5.73%, 250=0.39%, 500=0.13% lat (msec) : 2=3.65%, 4=6.90%, 10=9.77%, 20=15.49%, 50=39.58% lat (msec) : 100=16.02%, 250=1.69% cpu : usr=0.12%, sys=7.07%, ctx=1679, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1063KiB/s (1089kB/s), 259KiB/s-283KiB/s (265kB/s-290kB/s), io=23.4MiB (24.5MB), run=22095-22530msec WRITE: bw=1119KiB/s (1145kB/s), 273KiB/s-295KiB/s (280kB/s-302kB/s), io=24.6MiB (25.8MB), run=22095-22530msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179399: Sat Aug 22 18:53:36 2026 read: IOPS=11, BW=187KiB/s (191kB/s)(5920KiB/31741msec) clat (msec): min=6, max=261, avg=32.70, stdev=28.87 lat (msec): min=6, max=261, avg=32.70, stdev=28.87 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 46], 90.00th=[ 70], 95.00th=[ 89], | 99.00th=[ 157], 99.50th=[ 161], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 448, per=24.43%, avg=182.95, stdev=100.12, samples=62 iops : min= 1, max= 28, avg=10.69, stdev= 6.35, samples=62 write: IOPS=12, BW=201KiB/s (205kB/s)(6368KiB/31741msec); 0 zone resets clat (msec): min=10, max=244, avg=49.20, stdev=32.34 lat (msec): min=10, max=244, avg=49.20, stdev=32.34 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 46], | 70.00th=[ 57], 80.00th=[ 68], 90.00th=[ 96], 95.00th=[ 117], | 99.00th=[ 171], 99.50th=[ 184], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 28, max= 480, per=25.26%, avg=199.03, stdev=104.07, samples=62 iops : min= 1, max= 30, avg=11.71, stdev= 6.60, samples=62 lat (msec) : 10=2.99%, 20=21.09%, 50=49.87%, 100=20.44%, 250=5.47% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.21%, ctx=1146, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179400: Sat Aug 22 18:53:36 2026 read: IOPS=11, BW=180KiB/s (184kB/s)(5744KiB/31948msec) clat (msec): min=6, max=228, avg=31.32, stdev=28.58 lat (msec): min=6, max=228, avg=31.32, stdev=28.58 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 42], 90.00th=[ 66], 95.00th=[ 99], | 99.00th=[ 144], 99.50th=[ 159], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 28, max= 506, per=24.66%, avg=184.69, stdev=113.17, samples=61 iops : min= 1, max= 31, avg=10.82, stdev= 7.15, samples=61 write: IOPS=12, BW=205KiB/s (210kB/s)(6544KiB/31948msec); 0 zone resets clat (msec): min=12, max=244, avg=50.51, stdev=34.10 lat (msec): min=12, max=244, avg=50.51, stdev=34.10 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 48], | 70.00th=[ 60], 80.00th=[ 72], 90.00th=[ 94], 95.00th=[ 118], | 99.00th=[ 180], 99.50th=[ 184], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 63, max= 475, per=25.81%, avg=203.41, stdev=108.05, samples=63 iops : min= 3, max= 29, avg=12.00, stdev= 6.86, samples=63 lat (msec) : 10=4.43%, 20=21.61%, 50=46.74%, 100=20.57%, 250=6.64% cpu : usr=0.06%, sys=2.11%, ctx=1133, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179401: Sat Aug 22 18:53:36 2026 read: IOPS=12, BW=196KiB/s (201kB/s)(6256KiB/31915msec) clat (msec): min=5, max=223, avg=33.71, stdev=30.32 lat (msec): min=5, max=223, avg=33.71, stdev=30.31 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 78], 95.00th=[ 96], | 99.00th=[ 155], 99.50th=[ 171], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 30, max= 538, per=26.21%, avg=196.29, stdev=125.08, samples=63 iops : min= 1, max= 33, avg=11.56, stdev= 7.91, samples=63 write: IOPS=11, BW=189KiB/s (194kB/s)(6032KiB/31915msec); 0 zone resets clat (msec): min=10, max=211, avg=49.57, stdev=32.25 lat (msec): min=10, max=211, avg=49.57, stdev=32.26 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 56], 80.00th=[ 70], 90.00th=[ 94], 95.00th=[ 112], | 99.00th=[ 159], 99.50th=[ 211], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 63, max= 448, per=23.77%, avg=187.29, stdev=97.62, samples=63 iops : min= 3, max= 28, avg=10.98, stdev= 6.25, samples=63 lat (msec) : 10=3.12%, 20=22.40%, 50=47.40%, 100=20.70%, 250=6.38% cpu : usr=0.06%, sys=2.18%, ctx=1204, 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=179402: Sat Aug 22 18:53:36 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(6032KiB/31592msec) clat (msec): min=6, max=262, avg=33.95, stdev=30.77 lat (msec): min=6, max=262, avg=33.95, stdev=30.77 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 81], 95.00th=[ 103], | 99.00th=[ 124], 99.50th=[ 224], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 544, per=25.19%, avg=188.69, stdev=105.89, samples=62 iops : min= 1, max= 34, avg=11.06, stdev= 6.69, samples=62 write: IOPS=12, BW=198KiB/s (203kB/s)(6256KiB/31592msec); 0 zone resets clat (msec): min=11, max=210, avg=47.85, stdev=28.94 lat (msec): min=11, max=210, avg=47.85, stdev=28.94 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 55], 80.00th=[ 70], 90.00th=[ 90], 95.00th=[ 106], | 99.00th=[ 140], 99.50th=[ 182], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 62, max= 475, per=25.06%, avg=197.44, stdev=99.70, samples=62 iops : min= 3, max= 29, avg=11.61, stdev= 6.31, samples=62 lat (msec) : 10=2.60%, 20=22.14%, 50=48.57%, 100=20.96%, 250=5.60% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.32%, ctx=1216, 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=750KiB/s (768kB/s), 180KiB/s-196KiB/s (184kB/s-201kB/s), io=23.4MiB (24.5MB), run=31592-31948msec WRITE: bw=789KiB/s (808kB/s), 189KiB/s-205KiB/s (194kB/s-210kB/s), io=24.6MiB (25.8MB), run=31592-31948msec 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=179415: Sat Aug 22 18:53:48 2026 read: IOPS=2, BW=2674KiB/s (2738kB/s)(7168KiB/2681msec) clat (msec): min=80, max=326, avg=170.42, stdev=81.78 lat (msec): min=80, max=326, avg=170.42, stdev=81.78 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 94], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 165], 60.00th=[ 190], | 70.00th=[ 190], 80.00th=[ 197], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 2019, max= 4151, per=54.48%, avg=2733.67, stdev=1227.46, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1910KiB/s (1956kB/s)(5120KiB/2681msec); 0 zone resets clat (msec): min=93, max=552, avg=273.54, stdev=171.06 lat (msec): min=94, max=552, avg=273.79, stdev=170.83 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 94], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 292], 80.00th=[ 292], 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= 2019, max= 6107, per=57.84%, avg=4063.00, stdev=2890.65, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=25.00%, 250=50.00%, 500=16.67%, 750=8.33% cpu : usr=0.07%, sys=6.04%, ctx=77, 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=179417: Sat Aug 22 18:53:48 2026 read: IOPS=0, BW=502KiB/s (514kB/s)(2048KiB/4081msec) clat (msec): min=64, max=109, avg=87.12, stdev=31.72 lat (msec): min=64, max=109, avg=87.12, stdev=31.72 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 65], | 30.00th=[ 65], 40.00th=[ 65], 50.00th=[ 65], 60.00th=[ 110], | 70.00th=[ 110], 80.00th=[ 110], 90.00th=[ 110], 95.00th=[ 110], | 99.00th=[ 110], 99.50th=[ 110], 99.90th=[ 110], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 1462, max= 2035, per=34.84%, avg=1748.50, stdev=405.17, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2509KiB/s (2569kB/s)(10.0MiB/4081msec); 0 zone resets clat (msec): min=128, max=823, avg=378.73, stdev=244.28 lat (msec): min=128, max=823, avg=378.83, stdev=244.27 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 134], | 30.00th=[ 136], 40.00th=[ 241], 50.00th=[ 275], 60.00th=[ 405], | 70.00th=[ 414], 80.00th=[ 535], 90.00th=[ 701], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 2035, max= 4039, per=35.91%, avg=2523.00, stdev=822.15, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.75, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=7.25%, ctx=116, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179418: Sat Aug 22 18:53:48 2026 read: IOPS=1, BW=1613KiB/s (1652kB/s)(6144KiB/3808msec) clat (msec): min=72, max=747, avg=305.38, stdev=244.69 lat (msec): min=72, max=747, avg=305.38, stdev=244.69 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 234], | 70.00th=[ 418], 80.00th=[ 418], 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= 2031, max= 2048, per=40.67%, avg=2041.00, stdev= 7.71, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=1, BW=1613KiB/s (1652kB/s)(6144KiB/3808msec); 0 zone resets clat (msec): min=104, max=415, avg=285.65, stdev=112.75 lat (msec): min=105, max=415, avg=286.10, stdev=112.94 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 355], | 70.00th=[ 359], 80.00th=[ 359], 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= 1418, max= 4096, per=33.02%, avg=2319.80, stdev=1027.51, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=4.44%, ctx=82, 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=179419: Sat Aug 22 18:53:48 2026 read: IOPS=1, BW=2023KiB/s (2071kB/s)(5120KiB/2531msec) clat (msec): min=72, max=405, avg=218.96, stdev=164.97 lat (msec): min=72, max=405, avg=218.96, stdev=164.97 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 393], 80.00th=[ 393], 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= 4063, max= 4071, per=81.05%, avg=4067.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2832KiB/s (2900kB/s)(7168KiB/2531msec); 0 zone resets clat (msec): min=112, max=402, avg=198.30, stdev=103.48 lat (msec): min=112, max=402, avg=198.38, stdev=103.48 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 138], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 146], 60.00th=[ 176], | 70.00th=[ 176], 80.00th=[ 271], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 2019, max= 4254, per=39.42%, avg=2769.33, stdev=1285.78, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=33.33% cpu : usr=0.00%, sys=6.52%, ctx=78, 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=5018KiB/s (5139kB/s), 502KiB/s-2674KiB/s (514kB/s-2738kB/s), io=20.0MiB (20.0MB), run=2531-4081msec WRITE: bw=7026KiB/s (7194kB/s), 1613KiB/s-2832KiB/s (1652kB/s-2900kB/s), io=28.0MiB (29.4MB), run=2531-4081msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179420: Sat Aug 22 18:53:48 2026 read: IOPS=2, BW=2150KiB/s (2202kB/s)(7168KiB/3334msec) clat (usec): min=727, max=285245, avg=203924.86, stdev=101650.41 lat (usec): min=728, max=285246, avg=203926.33, stdev=101650.42 clat percentiles (usec): | 1.00th=[ 725], 5.00th=[ 725], 10.00th=[ 725], 20.00th=[149947], | 30.00th=[200279], 40.00th=[200279], 50.00th=[256902], 60.00th=[256902], | 70.00th=[256902], 80.00th=[278922], 90.00th=[287310], 95.00th=[287310], | 99.00th=[287310], 99.50th=[287310], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 1385, max= 4071, per=58.48%, avg=2887.50, stdev=1383.38, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1536KiB/s (1573kB/s)(5120KiB/3334msec); 0 zone resets clat (msec): min=174, max=600, avg=320.33, stdev=167.78 lat (msec): min=174, max=600, avg=320.66, stdev=167.78 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 2035, max= 4096, per=39.39%, avg=2723.33, stdev=1188.77, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=18.27%, ctx=304, 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=179421: Sat Aug 22 18:53:48 2026 read: IOPS=0, BW=494KiB/s (506kB/s)(2048KiB/4147msec) clat (usec): min=796, max=164058, avg=82427.79, stdev=115443.62 lat (usec): min=797, max=164061, avg=82429.33, stdev=115444.87 clat percentiles (usec): | 1.00th=[ 799], 5.00th=[ 799], 10.00th=[ 799], 20.00th=[ 799], | 30.00th=[ 799], 40.00th=[ 799], 50.00th=[ 799], 60.00th=[164627], | 70.00th=[164627], 80.00th=[164627], 90.00th=[164627], 95.00th=[164627], | 99.00th=[164627], 99.50th=[164627], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 1935, max= 2043, per=40.28%, avg=1989.00, stdev=76.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2469KiB/s (2529kB/s)(10.0MiB/4147msec); 0 zone resets clat (msec): min=141, max=732, avg=388.69, stdev=211.95 lat (msec): min=142, max=732, avg=388.77, stdev=211.92 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 192], | 30.00th=[ 211], 40.00th=[ 241], 50.00th=[ 268], 60.00th=[ 397], | 70.00th=[ 456], 80.00th=[ 617], 90.00th=[ 634], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1935, max= 4096, per=37.71%, avg=2606.71, stdev=998.84, samples=7 iops : min= 1, max= 4, avg= 1.86, stdev= 1.21, samples=7 lat (usec) : 1000=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=15.70%, ctx=211, 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=179422: Sat Aug 22 18:53:48 2026 read: IOPS=1, BW=1596KiB/s (1635kB/s)(6144KiB/3849msec) clat (usec): min=535, max=275082, avg=119057.32, stdev=106502.90 lat (usec): min=536, max=275083, avg=119058.70, stdev=106503.01 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 2024], | 30.00th=[ 2024], 40.00th=[115868], 50.00th=[115868], 60.00th=[137364], | 70.00th=[185598], 80.00th=[185598], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 2048, max= 4087, per=68.95%, avg=3404.67, stdev=1174.91, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=1, BW=1596KiB/s (1635kB/s)(6144KiB/3849msec); 0 zone resets clat (msec): min=233, max=1127, avg=491.11, stdev=328.74 lat (msec): min=233, max=1127, avg=491.19, stdev=328.75 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 464], | 70.00th=[ 506], 80.00th=[ 506], 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= 1380, max= 4096, per=33.57%, avg=2320.40, stdev=1033.16, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=12.60%, ctx=161, 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=179423: Sat Aug 22 18:53:48 2026 read: IOPS=1, BW=1572KiB/s (1609kB/s)(5120KiB/3258msec) clat (usec): min=626, max=237178, avg=114705.12, stdev=107932.41 lat (usec): min=628, max=237179, avg=114706.70, stdev=107932.37 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], 20.00th=[ 627], | 30.00th=[ 734], 40.00th=[ 734], 50.00th=[164627], 60.00th=[164627], | 70.00th=[170918], 80.00th=[170918], 90.00th=[238027], 95.00th=[238027], | 99.00th=[238027], 99.50th=[238027], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 2043, max= 6144, per=82.90%, avg=4093.50, stdev=2899.84, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2200KiB/s (2253kB/s)(7168KiB/3258msec); 0 zone resets clat (msec): min=105, max=618, avg=339.30, stdev=206.33 lat (msec): min=105, max=622, avg=340.07, stdev=207.36 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 167], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 236], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 584], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2035, max= 4055, per=35.35%, avg=2444.00, stdev=900.59, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 750=16.67% lat (msec) : 250=58.33%, 500=8.33%, 750=16.67% cpu : usr=0.03%, sys=16.73%, ctx=199, 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=4939KiB/s (5057kB/s), 494KiB/s-2150KiB/s (506kB/s-2202kB/s), io=20.0MiB (20.0MB), run=3258-4147msec WRITE: bw=6914KiB/s (7080kB/s), 1536KiB/s-2469KiB/s (1573kB/s-2529kB/s), io=28.0MiB (29.4MB), run=3258-4147msec 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=179430: Sat Aug 22 18:54:01 2026 read: IOPS=1, BW=6722KiB/s (6883kB/s)(12.0MiB/1828msec) clat (msec): min=192, max=995, avg=515.17, stdev=424.05 lat (msec): min=192, max=995, avg=515.17, stdev=424.05 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 6104, max= 8047, per=100.00%, avg=7075.50, stdev=1373.91, 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=6.68%, ctx=55, 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=179431: Sat Aug 22 18:54:01 2026 read: IOPS=0, BW=1187KiB/s (1215kB/s)(4096KiB/3451msec) clat (nsec): min=1202.5M, max=1202.5M, avg=1202517836.00, stdev= 0.00 lat (nsec): min=1202.5M, max=1202.5M, avg=1202520686.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1200], 5.00th=[ 1200], 10.00th=[ 1200], 20.00th=[ 1200], | 30.00th=[ 1200], 40.00th=[ 1200], 50.00th=[ 1200], 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=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=2374KiB/s (2431kB/s)(8192KiB/3451msec); 0 zone resets clat (msec): min=317, max=1585, avg=951.53, stdev=896.92 lat (msec): min=317, max=1586, avg=951.89, stdev=896.82 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 1586], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 8062, max= 8062, per=84.91%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.22%, ctx=82, 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=179432: Sat Aug 22 18:54:01 2026 write: IOPS=0, BW=3676KiB/s (3764kB/s)(12.0MiB/3343msec); 0 zone resets clat (msec): min=542, max=1736, avg=996.71, stdev=646.49 lat (msec): min=542, max=1737, avg=997.27, stdev=646.93 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8062, max= 8175, per=85.50%, avg=8118.50, stdev=79.90, 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=4.25%, ctx=72, 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=179433: Sat Aug 22 18:54:01 2026 write: IOPS=1, BW=4715KiB/s (4828kB/s)(12.0MiB/2606msec); 0 zone resets clat (msec): min=404, max=1343, avg=788.14, stdev=492.06 lat (msec): min=405, max=1343, avg=788.47, stdev=492.04 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 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= 7543, max= 8047, per=82.10%, avg=7795.00, stdev=356.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.19%, sys=4.80%, ctx=69, 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=4748KiB/s (4862kB/s), 1187KiB/s-6722KiB/s (1215kB/s-6883kB/s), io=16.0MiB (16.8MB), run=1828-3451msec WRITE: bw=9495KiB/s (9723kB/s), 2374KiB/s-4715KiB/s (2431kB/s-4828kB/s), io=32.0MiB (33.6MB), run=2606-3451msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179434: Sat Aug 22 18:54:01 2026 read: IOPS=1, BW=4987KiB/s (5107kB/s)(12.0MiB/2464msec) clat (msec): min=726, max=837, avg=770.94, stdev=58.65 lat (msec): min=726, max=837, avg=770.94, stdev=58.65 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 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= 8031, max= 8159, per=100.00%, avg=8095.00, stdev=90.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.04%, sys=9.38%, ctx=331, 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=179435: Sat Aug 22 18:54:01 2026 read: IOPS=0, BW=1606KiB/s (1645kB/s)(4096KiB/2550msec) clat (nsec): min=740341k, max=740341k, avg=740340897.00, stdev= 0.00 lat (nsec): min=740343k, max=740343k, avg=740343236.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 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= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3213KiB/s (3290kB/s)(8192KiB/2550msec); 0 zone resets clat (msec): min=780, max=843, avg=812.02, stdev=44.87 lat (msec): min=780, max=845, avg=812.91, stdev=45.63 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8159, max= 8159, per=77.24%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=8.36%, ctx=105, 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=179436: Sat Aug 22 18:54:01 2026 write: IOPS=0, BW=3961KiB/s (4056kB/s)(12.0MiB/3102msec); 0 zone resets clat (msec): min=314, max=1682, avg=982.35, stdev=684.57 lat (msec): min=315, max=1683, avg=983.26, stdev=684.60 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8159, max= 8159, per=77.24%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.71%, ctx=49, 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=179437: Sat Aug 22 18:54:01 2026 write: IOPS=1, BW=4939KiB/s (5057kB/s)(12.0MiB/2488msec); 0 zone resets clat (msec): min=571, max=1055, avg=772.01, stdev=252.88 lat (msec): min=571, max=1056, avg=773.12, stdev=252.55 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 8031, max= 8159, per=76.64%, avg=8095.00, stdev=90.51, 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=0.08%, sys=6.03%, ctx=130, 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=6425KiB/s (6579kB/s), 1606KiB/s-4987KiB/s (1645kB/s-5107kB/s), io=16.0MiB (16.8MB), run=2464-2550msec WRITE: bw=10.3MiB/s (10.8MB/s), 3213KiB/s-4939KiB/s (3290kB/s-5057kB/s), io=32.0MiB (33.6MB), run=2488-3102msec