== sanity test 398b: DIO and buffer IO race ============== 09:48:51 (1787320131) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.02894 s, 7.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=178534: Fri Aug 21 09:51:08 2026 read: IOPS=12, BW=51.3KiB/s (52.6kB/s)(5992KiB/116743msec) clat (usec): min=42, max=1019.9k, avg=44105.37, stdev=37050.06 lat (usec): min=42, max=1019.0k, avg=44109.90, stdev=37050.11 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 12125], 10.00th=[ 17433], | 20.00th=[ 22938], 30.00th=[ 27919], 40.00th=[ 32113], | 50.00th=[ 38536], 60.00th=[ 44827], 70.00th=[ 52167], | 80.00th=[ 61604], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[ 154141], 99.50th=[ 177210], 99.90th=[ 200279], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 5, max= 110, per=24.92%, avg=51.09, stdev=19.48, samples=230 iops : min= 1, max= 27, avg=12.10, stdev= 4.89, samples=230 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6296KiB/116743msec); 0 zone resets clat (usec): min=1148, max=281216, avg=31904.79, stdev=31038.69 lat (usec): min=1149, max=281218, avg=31908.32, stdev=31038.63 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1631], 10.00th=[ 2474], 20.00th=[ 4359], | 30.00th=[ 8225], 40.00th=[ 16909], 50.00th=[ 24249], 60.00th=[ 32113], | 70.00th=[ 40633], 80.00th=[ 54264], 90.00th=[ 73925], 95.00th=[ 95945], | 99.00th=[132645], 99.50th=[145753], 99.90th=[185598], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 126, per=25.09%, avg=53.94, stdev=21.84, samples=229 iops : min= 1, max= 31, avg=12.82, stdev= 5.51, samples=229 lat (usec) : 50=0.16%, 100=1.33%, 250=0.20%, 750=0.03% lat (msec) : 2=3.78%, 4=5.53%, 10=7.62%, 20=10.64%, 50=43.20% lat (msec) : 100=23.63%, 250=3.81%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=5.62%, ctx=7092, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178535: Fri Aug 21 09:51:08 2026 read: IOPS=13, BW=52.8KiB/s (54.1kB/s)(5940KiB/112429msec) clat (usec): min=41, max=265965, avg=41946.97, stdev=25098.62 lat (usec): min=42, max=265966, avg=41954.75, stdev=25094.93 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 13042], 10.00th=[ 17433], 20.00th=[ 22938], | 30.00th=[ 27395], 40.00th=[ 31851], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 58983], 90.00th=[ 72877], 95.00th=[ 84411], | 99.00th=[124257], 99.50th=[152044], 99.90th=[196084], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 5, max= 111, per=25.66%, avg=52.60, stdev=20.46, samples=221 iops : min= 1, max= 27, avg=12.48, stdev= 5.14, samples=221 write: IOPS=14, BW=56.5KiB/s (57.8kB/s)(6348KiB/112429msec); 0 zone resets clat (usec): min=1097, max=998873, avg=31287.41, stdev=39563.24 lat (usec): min=1098, max=998874, avg=31290.94, stdev=39563.55 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1500], 10.00th=[ 2409], | 20.00th=[ 4113], 30.00th=[ 6849], 40.00th=[ 13698], | 50.00th=[ 22414], 60.00th=[ 29754], 70.00th=[ 38011], | 80.00th=[ 52691], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[ 135267], 99.50th=[ 149947], 99.90th=[ 233833], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 15, max= 126, per=26.22%, avg=56.37, stdev=22.23, samples=220 iops : min= 3, max= 31, avg=13.43, stdev= 5.59, samples=220 lat (usec) : 50=0.16%, 100=0.85%, 250=0.16%, 500=0.07%, 750=0.07% lat (msec) : 2=4.04%, 4=6.02%, 10=8.43%, 20=11.33%, 50=43.20% lat (msec) : 100=22.27%, 250=3.35%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.71%, ctx=6823, majf=0, minf=19 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=178536: Fri Aug 21 09:51:08 2026 read: IOPS=12, BW=51.0KiB/s (53.2kB/s)(6028KiB/115976msec) clat (usec): min=27, max=273245, avg=41923.14, stdev=26312.88 lat (usec): min=27, max=273247, avg=41931.27, stdev=26310.30 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 12125], 10.00th=[ 16909], 20.00th=[ 22414], | 30.00th=[ 27132], 40.00th=[ 31589], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 48497], 80.00th=[ 59507], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[131597], 99.50th=[143655], 99.90th=[217056], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7, max= 119, per=25.28%, avg=51.82, stdev=19.26, samples=227 iops : min= 1, max= 29, avg=12.29, stdev= 4.84, samples=227 write: IOPS=13, BW=53.0KiB/s (55.3kB/s)(6260KiB/115976msec); 0 zone resets clat (usec): min=1155, max=952586, avg=33453.12, stdev=39931.43 lat (usec): min=1155, max=952587, avg=33454.99, stdev=39931.44 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1582], 10.00th=[ 2343], 20.00th=[ 4490], | 30.00th=[ 7242], 40.00th=[ 16450], 50.00th=[ 24773], 60.00th=[ 32375], | 70.00th=[ 42730], 80.00th=[ 55837], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[141558], 99.50th=[164627], 99.90th=[252707], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 134, per=25.02%, avg=53.78, stdev=21.21, samples=227 iops : min= 1, max= 33, avg=12.78, stdev= 5.35, samples=227 lat (usec) : 50=0.23%, 100=1.50%, 250=0.13%, 500=0.10%, 750=0.03% lat (msec) : 2=4.10%, 4=5.18%, 10=8.04%, 20=10.35%, 50=43.72% lat (msec) : 100=22.95%, 250=3.58%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.58%, ctx=6981, 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=178537: Fri Aug 21 09:51:08 2026 read: IOPS=13, BW=53.1KiB/s (54.4kB/s)(6052KiB/113905msec) clat (usec): min=37, max=204093, avg=41765.34, stdev=26221.36 lat (usec): min=37, max=204094, avg=41768.36, stdev=26220.18 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10683], 10.00th=[ 16319], 20.00th=[ 21627], | 30.00th=[ 26084], 40.00th=[ 31065], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 59507], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[133694], 99.50th=[147850], 99.90th=[189793], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 7, max= 120, per=25.89%, avg=53.07, stdev=20.27, samples=223 iops : min= 1, max= 30, avg=12.60, stdev= 5.12, samples=223 write: IOPS=13, BW=54.7KiB/s (56.1kB/s)(6236KiB/113905msec); 0 zone resets clat (usec): min=1162, max=976466, avg=32224.95, stdev=39415.54 lat (usec): min=1163, max=976470, avg=32233.54, stdev=39411.24 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1614], 10.00th=[ 2442], 20.00th=[ 4686], | 30.00th=[ 7832], 40.00th=[ 14615], 50.00th=[ 22938], 60.00th=[ 30278], | 70.00th=[ 40633], 80.00th=[ 54789], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[147850], 99.90th=[231736], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 7, max= 135, per=25.37%, avg=54.55, stdev=22.44, samples=223 iops : min= 1, max= 33, avg=12.97, stdev= 5.64, samples=223 lat (usec) : 50=0.20%, 100=1.37%, 250=0.16%, 500=0.10% lat (msec) : 2=3.68%, 4=5.40%, 10=8.53%, 20=12.34%, 50=41.96% lat (msec) : 100=22.62%, 250=3.61%, 1000=0.03% cpu : usr=0.08%, sys=5.69%, ctx=7001, majf=0, minf=19 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=206KiB/s (211kB/s), 51.3KiB/s-53.1KiB/s (52.6kB/s-54.4kB/s), io=23.4MiB (24.6MB), run=112429-116743msec WRITE: bw=215KiB/s (221kB/s), 53.9KiB/s-56.5KiB/s (55.2kB/s-57.8kB/s), io=24.6MiB (25.7MB), run=112429-116743msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178530: Fri Aug 21 09:51:43 2026 read: IOPS=9, BW=39.5KiB/s (40.4kB/s)(5992KiB/151829msec) clat (msec): min=6, max=1039, avg=40.90, stdev=43.86 lat (msec): min=6, max=1039, avg=40.90, stdev=43.86 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 60], 90.00th=[ 88], 95.00th=[ 120], | 99.00th=[ 169], 99.50th=[ 194], 99.90th=[ 300], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 191, per=25.49%, avg=40.01, stdev=27.57, samples=292 iops : min= 1, max= 47, avg= 9.36, stdev= 6.93, samples=292 write: IOPS=10, BW=41.5KiB/s (42.5kB/s)(6296KiB/151829msec); 0 zone resets clat (msec): min=10, max=312, avg=57.24, stdev=39.32 lat (msec): min=10, max=312, avg=57.25, stdev=39.32 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 53], | 70.00th=[ 68], 80.00th=[ 85], 90.00th=[ 111], 95.00th=[ 136], | 99.00th=[ 203], 99.50th=[ 228], 99.90th=[ 296], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 135, per=25.03%, avg=41.30, stdev=24.93, samples=297 iops : min= 1, max= 33, avg= 9.67, stdev= 6.29, samples=297 lat (msec) : 10=2.18%, 20=17.22%, 50=46.61%, 100=23.60%, 250=10.19% lat (msec) : 500=0.16%, 2000=0.03% cpu : usr=0.06%, sys=2.37%, ctx=5124, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178531: Fri Aug 21 09:51:43 2026 read: IOPS=9, BW=39.1KiB/s (40.0kB/s)(5940KiB/152009msec) clat (msec): min=5, max=902, avg=39.98, stdev=41.09 lat (msec): min=5, max=902, avg=39.98, stdev=41.10 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 86], 95.00th=[ 116], | 99.00th=[ 182], 99.50th=[ 203], 99.90th=[ 245], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 198, per=25.25%, avg=39.64, stdev=26.84, samples=291 iops : min= 1, max= 49, avg= 9.26, stdev= 6.78, samples=291 write: IOPS=10, BW=41.8KiB/s (42.8kB/s)(6348KiB/152009msec); 0 zone resets clat (msec): min=9, max=374, avg=58.09, stdev=40.12 lat (msec): min=9, max=374, avg=58.09, stdev=40.12 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 68], 80.00th=[ 86], 90.00th=[ 112], 95.00th=[ 140], | 99.00th=[ 199], 99.50th=[ 230], 99.90th=[ 271], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 120, per=25.14%, avg=41.48, stdev=24.03, samples=297 iops : min= 1, max= 30, avg= 9.72, stdev= 6.06, samples=297 lat (msec) : 10=2.38%, 20=15.89%, 50=47.88%, 100=23.24%, 250=10.45% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=2.45%, ctx=5032, 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=178532: Fri Aug 21 09:51:43 2026 read: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6028KiB/151471msec) clat (msec): min=6, max=342, avg=39.97, stdev=33.92 lat (msec): min=6, max=342, avg=39.97, stdev=33.92 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 85], 95.00th=[ 111], | 99.00th=[ 163], 99.50th=[ 194], 99.90th=[ 253], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 159, per=25.51%, avg=40.05, stdev=25.12, samples=293 iops : min= 1, max= 39, avg= 9.37, stdev= 6.33, samples=293 write: IOPS=10, BW=41.3KiB/s (42.3kB/s)(6260KiB/151471msec); 0 zone resets clat (msec): min=10, max=909, avg=58.02, stdev=43.36 lat (msec): min=10, max=909, avg=58.03, stdev=43.36 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 37], 50.00th=[ 45], 60.00th=[ 57], | 70.00th=[ 68], 80.00th=[ 84], 90.00th=[ 110], 95.00th=[ 140], | 99.00th=[ 186], 99.50th=[ 199], 99.90th=[ 266], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 127, per=25.00%, avg=41.26, stdev=24.68, samples=295 iops : min= 1, max= 31, avg= 9.66, stdev= 6.23, samples=295 lat (msec) : 10=1.60%, 20=16.34%, 50=46.91%, 100=25.62%, 250=9.38% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.04%, sys=2.42%, ctx=5198, 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=178533: Fri Aug 21 09:51:43 2026 read: IOPS=9, BW=39.9KiB/s (40.8kB/s)(6052KiB/151797msec) clat (msec): min=5, max=303, avg=40.30, stdev=35.26 lat (msec): min=5, max=303, avg=40.30, stdev=35.26 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 86], 95.00th=[ 114], | 99.00th=[ 163], 99.50th=[ 209], 99.90th=[ 247], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 7, max= 151, per=25.65%, avg=40.27, stdev=26.88, samples=293 iops : min= 1, max= 37, avg= 9.42, stdev= 6.79, samples=293 write: IOPS=10, BW=41.1KiB/s (42.1kB/s)(6236KiB/151797msec); 0 zone resets clat (msec): min=11, max=934, avg=57.98, stdev=44.79 lat (msec): min=11, max=934, avg=57.99, stdev=44.79 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 67], 80.00th=[ 85], 90.00th=[ 110], 95.00th=[ 138], | 99.00th=[ 194], 99.50th=[ 226], 99.90th=[ 292], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 135, per=25.05%, avg=41.34, stdev=24.63, samples=294 iops : min= 1, max= 33, avg= 9.69, stdev= 6.21, samples=294 lat (msec) : 10=2.44%, 20=16.34%, 50=46.61%, 100=24.41%, 250=10.03% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.05%, sys=2.38%, ctx=5173, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=158KiB/s (162kB/s), 39.1KiB/s-39.9KiB/s (40.0kB/s-40.8kB/s), io=23.4MiB (24.6MB), run=151471-152009msec WRITE: bw=165KiB/s (169kB/s), 41.1KiB/s-41.8KiB/s (42.1kB/s-42.8kB/s), io=24.6MiB (25.7MB), run=151471-152009msec 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=178581: Fri Aug 21 09:52:25 2026 read: IOPS=11, BW=184KiB/s (188kB/s)(5920KiB/32255msec) clat (usec): min=35, max=287552, avg=46463.28, stdev=33901.65 lat (usec): min=35, max=287554, avg=46465.27, stdev=33901.64 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 65], 10.00th=[ 1012], 20.00th=[ 24249], | 30.00th=[ 29492], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 45876], | 70.00th=[ 54264], 80.00th=[ 67634], 90.00th=[ 87557], 95.00th=[102237], | 99.00th=[168821], 99.50th=[204473], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 31, max= 477, per=24.63%, avg=182.78, stdev=77.52, samples=63 iops : min= 1, max= 29, avg=10.63, stdev= 4.94, samples=63 write: IOPS=12, BW=197KiB/s (202kB/s)(6368KiB/32255msec); 0 zone resets clat (usec): min=1726, max=210434, avg=37134.52, stdev=37260.03 lat (usec): min=1729, max=210436, avg=37141.23, stdev=37262.08 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 2606], 10.00th=[ 3818], 20.00th=[ 5735], | 30.00th=[ 9241], 40.00th=[ 16909], 50.00th=[ 25822], 60.00th=[ 37487], | 70.00th=[ 47973], 80.00th=[ 60031], 90.00th=[ 86508], 95.00th=[111674], | 99.00th=[166724], 99.50th=[185598], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 30, max= 443, per=25.28%, avg=197.43, stdev=81.86, samples=63 iops : min= 1, max= 27, avg=11.56, stdev= 5.22, samples=63 lat (usec) : 50=0.52%, 100=3.78%, 250=0.26%, 500=0.13% lat (msec) : 2=1.30%, 4=4.95%, 10=10.81%, 20=8.98%, 50=38.15% lat (msec) : 100=24.87%, 250=6.12%, 500=0.13% cpu : usr=0.04%, sys=6.06%, ctx=1795, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178582: Fri Aug 21 09:52:25 2026 read: IOPS=11, BW=186KiB/s (190kB/s)(5744KiB/30937msec) clat (usec): min=52, max=197653, avg=46148.69, stdev=30374.60 lat (usec): min=53, max=197654, avg=46149.83, stdev=30374.54 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 68], 10.00th=[ 15664], 20.00th=[ 24249], | 30.00th=[ 29754], 40.00th=[ 34866], 50.00th=[ 41681], 60.00th=[ 47973], | 70.00th=[ 54264], 80.00th=[ 66847], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[154141], 99.50th=[164627], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 62, max= 347, per=24.95%, avg=185.11, stdev=67.41, samples=61 iops : min= 3, max= 21, avg=10.77, stdev= 4.26, samples=61 write: IOPS=13, BW=212KiB/s (217kB/s)(6544KiB/30937msec); 0 zone resets clat (usec): min=1689, max=180094, avg=34948.67, stdev=34270.39 lat (usec): min=1691, max=180094, avg=34978.81, stdev=34280.03 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2245], 10.00th=[ 3523], 20.00th=[ 6194], | 30.00th=[ 10945], 40.00th=[ 16057], 50.00th=[ 23987], 60.00th=[ 33424], | 70.00th=[ 43779], 80.00th=[ 55313], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[131597], 99.50th=[156238], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 63, max= 510, per=26.91%, avg=210.13, stdev=85.99, samples=61 iops : min= 3, max= 31, avg=12.36, stdev= 5.42, samples=61 lat (usec) : 100=3.12%, 250=0.52%, 1000=0.13% lat (msec) : 2=1.56%, 4=5.86%, 10=7.42%, 20=11.07%, 50=40.36% lat (msec) : 100=23.70%, 250=6.25% cpu : usr=0.06%, sys=6.07%, ctx=1780, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178583: Fri Aug 21 09:52:25 2026 read: IOPS=12, BW=196KiB/s (200kB/s)(6256KiB/31985msec) clat (usec): min=39, max=164941, avg=44612.94, stdev=29095.74 lat (usec): min=39, max=164942, avg=44614.07, stdev=29095.76 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 65], 10.00th=[ 83], 20.00th=[ 22152], | 30.00th=[ 29492], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 47973], | 70.00th=[ 56886], 80.00th=[ 66847], 90.00th=[ 86508], 95.00th=[ 98042], | 99.00th=[127402], 99.50th=[128451], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 31, max= 380, per=26.31%, avg=195.22, stdev=84.71, samples=63 iops : min= 1, max= 23, avg=11.43, stdev= 5.41, samples=63 write: IOPS=11, BW=189KiB/s (193kB/s)(6032KiB/31985msec); 0 zone resets clat (usec): min=1794, max=224876, avg=37995.08, stdev=37301.62 lat (usec): min=1795, max=224878, avg=37998.82, stdev=37302.72 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 2868], 10.00th=[ 4113], 20.00th=[ 7570], | 30.00th=[ 11863], 40.00th=[ 20579], 50.00th=[ 27919], 60.00th=[ 36439], | 70.00th=[ 44827], 80.00th=[ 63701], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[193987], 99.50th=[204473], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 63, max= 380, per=23.71%, avg=185.17, stdev=73.38, samples=63 iops : min= 3, max= 23, avg=10.79, stdev= 4.64, samples=63 lat (usec) : 50=0.13%, 100=5.47%, 250=0.26%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.30%, 4=3.52%, 10=7.55%, 20=10.29%, 50=39.84% lat (msec) : 100=25.91%, 250=5.47% cpu : usr=0.08%, sys=5.79%, ctx=1786, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178584: Fri Aug 21 09:52:25 2026 read: IOPS=12, BW=196KiB/s (201kB/s)(6032KiB/30726msec) clat (usec): min=43, max=214943, avg=43968.71, stdev=30708.31 lat (usec): min=43, max=214944, avg=43969.75, stdev=30708.31 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 117], 20.00th=[ 21627], | 30.00th=[ 28705], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 64750], 90.00th=[ 82314], 95.00th=[100140], | 99.00th=[137364], 99.50th=[160433], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 60, max= 445, per=26.36%, avg=195.58, stdev=72.46, samples=60 iops : min= 3, max= 27, avg=11.43, stdev= 4.57, samples=60 write: IOPS=12, BW=204KiB/s (208kB/s)(6256KiB/30726msec); 0 zone resets clat (usec): min=1767, max=210122, avg=35581.29, stdev=34280.35 lat (usec): min=1769, max=210125, avg=35588.30, stdev=34279.86 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2212], 10.00th=[ 3851], 20.00th=[ 6783], | 30.00th=[ 10421], 40.00th=[ 17433], 50.00th=[ 26084], 60.00th=[ 32900], | 70.00th=[ 45351], 80.00th=[ 61080], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[158335], 99.50th=[164627], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 63, max= 380, per=26.18%, avg=204.43, stdev=69.87, samples=60 iops : min= 3, max= 23, avg=12.00, stdev= 4.48, samples=60 lat (usec) : 50=0.39%, 100=4.30%, 250=0.78%, 500=0.13%, 750=0.26% lat (msec) : 2=1.69%, 4=3.91%, 10=9.11%, 20=9.77%, 50=38.41% lat (msec) : 100=26.43%, 250=4.82% cpu : usr=0.07%, sys=5.93%, ctx=1826, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=743KiB/s (760kB/s), 184KiB/s-196KiB/s (188kB/s-201kB/s), io=23.4MiB (24.5MB), run=30726-32255msec WRITE: bw=781KiB/s (800kB/s), 189KiB/s-212KiB/s (193kB/s-217kB/s), io=24.6MiB (25.8MB), run=30726-32255msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178577: Fri Aug 21 09:52:38 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5920KiB/45701msec) clat (msec): min=6, max=242, avg=49.41, stdev=40.52 lat (msec): min=6, max=242, avg=49.41, stdev=40.52 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 67], 90.00th=[ 102], 95.00th=[ 128], | 99.00th=[ 220], 99.50th=[ 234], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 415, per=24.85%, avg=129.46, stdev=76.00, samples=89 iops : min= 1, max= 25, avg= 7.29, stdev= 4.75, samples=89 write: IOPS=8, BW=139KiB/s (143kB/s)(6368KiB/45701msec); 0 zone resets clat (msec): min=11, max=326, avg=68.62, stdev=46.01 lat (msec): min=11, max=326, avg=68.62, stdev=46.01 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 62], | 70.00th=[ 77], 80.00th=[ 95], 90.00th=[ 134], 95.00th=[ 169], | 99.00th=[ 226], 99.50th=[ 241], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 313, per=25.44%, avg=139.65, stdev=68.80, samples=89 iops : min= 1, max= 19, avg= 7.94, stdev= 4.37, samples=89 lat (msec) : 10=1.30%, 20=7.81%, 50=47.40%, 100=29.30%, 250=14.06% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=2.10%, ctx=1237, 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=178578: Fri Aug 21 09:52:38 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5744KiB/45898msec) clat (msec): min=9, max=241, avg=48.14, stdev=37.85 lat (msec): min=9, max=241, avg=48.14, stdev=37.85 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 65], 90.00th=[ 100], 95.00th=[ 136], | 99.00th=[ 207], 99.50th=[ 218], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 30, max= 383, per=25.08%, avg=130.65, stdev=74.16, samples=85 iops : min= 1, max= 23, avg= 7.38, stdev= 4.69, samples=85 write: IOPS=8, BW=143KiB/s (146kB/s)(6544KiB/45898msec); 0 zone resets clat (msec): min=18, max=261, avg=69.48, stdev=44.62 lat (msec): min=18, max=261, avg=69.49, stdev=44.62 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 66], | 70.00th=[ 79], 80.00th=[ 104], 90.00th=[ 124], 95.00th=[ 165], | 99.00th=[ 224], 99.50th=[ 241], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 344, per=25.83%, avg=141.80, stdev=71.19, samples=89 iops : min= 1, max= 21, avg= 8.08, stdev= 4.50, samples=89 lat (msec) : 10=0.39%, 20=6.77%, 50=49.09%, 100=28.39%, 250=15.10% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=2.07%, ctx=1267, 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=178579: Fri Aug 21 09:52:38 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(6256KiB/45311msec) clat (msec): min=7, max=315, avg=48.91, stdev=42.65 lat (msec): min=7, max=315, avg=48.92, stdev=42.65 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 64], 90.00th=[ 95], 95.00th=[ 142], | 99.00th=[ 230], 99.50th=[ 271], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 409, per=26.85%, avg=139.86, stdev=88.77, samples=88 iops : min= 1, max= 25, avg= 7.94, stdev= 5.62, samples=88 write: IOPS=8, BW=133KiB/s (136kB/s)(6032KiB/45311msec); 0 zone resets clat (msec): min=15, max=245, avg=69.12, stdev=42.22 lat (msec): min=15, max=245, avg=69.13, stdev=42.22 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 42], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 66], | 70.00th=[ 80], 80.00th=[ 95], 90.00th=[ 125], 95.00th=[ 165], | 99.00th=[ 215], 99.50th=[ 232], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 30, max= 320, per=24.15%, avg=132.58, stdev=64.44, samples=88 iops : min= 1, max= 20, avg= 7.50, stdev= 4.11, samples=88 lat (msec) : 10=0.52%, 20=8.72%, 50=47.14%, 100=30.21%, 250=13.15% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=2.06%, ctx=1278, 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=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=178580: Fri Aug 21 09:52:38 2026 read: IOPS=8, BW=132KiB/s (135kB/s)(6032KiB/45609msec) clat (msec): min=7, max=270, avg=47.36, stdev=36.79 lat (msec): min=7, max=270, avg=47.36, stdev=36.79 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 65], 90.00th=[ 95], 95.00th=[ 125], | 99.00th=[ 199], 99.50th=[ 224], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 350, per=25.37%, avg=132.16, stdev=74.63, samples=89 iops : min= 1, max= 21, avg= 7.47, stdev= 4.71, samples=89 write: IOPS=8, BW=137KiB/s (140kB/s)(6256KiB/45609msec); 0 zone resets clat (msec): min=17, max=347, avg=70.81, stdev=45.87 lat (msec): min=17, max=347, avg=70.83, stdev=45.87 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 29], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 44], 40.00th=[ 50], 50.00th=[ 57], 60.00th=[ 67], | 70.00th=[ 80], 80.00th=[ 94], 90.00th=[ 127], 95.00th=[ 157], | 99.00th=[ 247], 99.50th=[ 342], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 351, per=24.90%, avg=136.70, stdev=70.01, samples=90 iops : min= 1, max= 21, avg= 7.76, stdev= 4.45, samples=90 lat (msec) : 10=0.52%, 20=8.20%, 50=45.96%, 100=32.29%, 250=12.50% lat (msec) : 500=0.52% cpu : usr=0.04%, sys=2.13%, ctx=1239, 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=522KiB/s (534kB/s), 125KiB/s-138KiB/s (128kB/s-141kB/s), io=23.4MiB (24.5MB), run=45311-45898msec WRITE: bw=549KiB/s (562kB/s), 133KiB/s-143KiB/s (136kB/s-146kB/s), io=24.6MiB (25.8MB), run=45311-45898msec 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=178598: Fri Aug 21 09:52:53 2026 read: IOPS=2, BW=2951KiB/s (3022kB/s)(7168KiB/2429msec) clat (usec): min=1154, max=534017, avg=191092.21, stdev=163855.80 lat (usec): min=1155, max=534018, avg=191093.80, stdev=163855.73 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1156], 10.00th=[ 1156], 20.00th=[137364], | 30.00th=[143655], 40.00th=[143655], 50.00th=[143655], 60.00th=[185598], | 70.00th=[185598], 80.00th=[191890], 90.00th=[534774], 95.00th=[534774], | 99.00th=[534774], 99.50th=[534774], 99.90th=[534774], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 2007, max= 6119, per=72.48%, avg=3388.33, stdev=2364.88, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=2, BW=2108KiB/s (2158kB/s)(5120KiB/2429msec); 0 zone resets clat (msec): min=96, max=294, avg=171.34, stdev=81.20 lat (msec): min=96, max=294, avg=171.43, stdev=81.17 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 101], 40.00th=[ 101], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 194], 80.00th=[ 194], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 2039, max= 4063, per=41.46%, avg=2713.67, stdev=1168.56, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 100=16.67%, 250=58.33%, 500=8.33%, 750=8.33% cpu : usr=0.04%, sys=25.91%, ctx=264, 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=178599: Fri Aug 21 09:52:53 2026 read: IOPS=0, BW=468KiB/s (479kB/s)(2048KiB/4380msec) clat (usec): min=985, max=240655, avg=120820.40, stdev=169472.80 lat (usec): min=986, max=240658, avg=120822.27, stdev=169473.99 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 988], 10.00th=[ 988], 20.00th=[ 988], | 30.00th=[ 988], 40.00th=[ 988], 50.00th=[ 988], 60.00th=[240124], | 70.00th=[240124], 80.00th=[240124], 90.00th=[240124], 95.00th=[240124], | 99.00th=[240124], 99.50th=[240124], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 1885, max= 2007, per=41.63%, avg=1946.00, stdev=86.27, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2338KiB/s (2394kB/s)(10.0MiB/4380msec); 0 zone resets clat (msec): min=128, max=818, avg=392.76, stdev=286.14 lat (msec): min=128, max=818, avg=392.85, stdev=286.13 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 133], | 30.00th=[ 140], 40.00th=[ 176], 50.00th=[ 203], 60.00th=[ 397], | 70.00th=[ 418], 80.00th=[ 735], 90.00th=[ 785], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1885, max= 6131, per=55.62%, avg=3641.00, stdev=2268.40, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 2.19, samples=5 lat (usec) : 1000=8.33% lat (msec) : 250=50.00%, 500=16.67%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=19.34%, ctx=156, 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=178601: Fri Aug 21 09:52:53 2026 read: IOPS=1, BW=1758KiB/s (1800kB/s)(6144KiB/3495msec) clat (usec): min=531, max=331776, avg=142290.71, stdev=132578.48 lat (usec): min=532, max=331777, avg=142291.80, stdev=132578.39 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 537], | 30.00th=[ 537], 40.00th=[106431], 50.00th=[106431], 60.00th=[175113], | 70.00th=[238027], 80.00th=[238027], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 1976, max= 4096, per=71.00%, avg=3319.33, stdev=1168.09, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1758KiB/s (1800kB/s)(6144KiB/3495msec); 0 zone resets clat (msec): min=165, max=667, avg=434.91, stdev=209.93 lat (msec): min=165, max=667, avg=434.99, stdev=209.91 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 542], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1943, max= 2767, per=32.88%, avg=2152.20, stdev=346.17, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (usec) : 750=16.67% lat (msec) : 250=41.67%, 500=16.67%, 750=25.00% cpu : usr=0.00%, sys=17.49%, ctx=192, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178603: Fri Aug 21 09:52:53 2026 read: IOPS=1, BW=1568KiB/s (1606kB/s)(5120KiB/3265msec) clat (usec): min=947, max=367340, avg=157677.03, stdev=169845.70 lat (usec): min=948, max=367342, avg=157678.21, stdev=169845.73 clat percentiles (usec): | 1.00th=[ 947], 5.00th=[ 947], 10.00th=[ 947], 20.00th=[ 947], | 30.00th=[ 963], 40.00th=[ 963], 50.00th=[117965], 60.00th=[117965], | 70.00th=[299893], 80.00th=[299893], 90.00th=[367002], 95.00th=[367002], | 99.00th=[367002], 99.50th=[367002], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 3771, max= 4063, per=83.79%, avg=3917.00, stdev=206.48, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2195KiB/s (2248kB/s)(7168KiB/3265msec); 0 zone resets clat (msec): min=102, max=668, avg=303.94, stdev=193.73 lat (msec): min=102, max=668, avg=304.05, stdev=193.74 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 130], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 300], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 397], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 2039, max= 4063, per=46.61%, avg=3051.00, stdev=1168.56, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 1000=16.67% lat (msec) : 250=33.33%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=18.78%, ctx=162, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4676KiB/s (4788kB/s), 468KiB/s-2951KiB/s (479kB/s-3022kB/s), io=20.0MiB (20.0MB), run=2429-4380msec WRITE: bw=6546KiB/s (6703kB/s), 1758KiB/s-2338KiB/s (1800kB/s-2394kB/s), io=28.0MiB (29.4MB), run=2429-4380msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178600: Fri Aug 21 09:52:53 2026 read: IOPS=1, BW=1942KiB/s (1989kB/s)(7168KiB/3691msec) clat (msec): min=74, max=912, avg=305.84, stdev=356.94 lat (msec): min=74, max=912, avg=305.84, stdev=356.94 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 75], | 30.00th=[ 84], 40.00th=[ 84], 50.00th=[ 120], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 726], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1452, max= 4079, per=54.32%, avg=2405.50, stdev=1150.21, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1387KiB/s (1420kB/s)(5120KiB/3691msec); 0 zone resets clat (msec): min=133, max=444, avg=247.39, stdev=127.37 lat (msec): min=133, max=444, avg=247.49, stdev=127.35 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 134], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 220], 60.00th=[ 220], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 2043, max= 4096, per=49.52%, avg=3069.50, stdev=1451.69, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 lat (msec) : 100=25.00%, 250=41.67%, 500=16.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=7.83%, ctx=135, 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=178602: Fri Aug 21 09:52:53 2026 read: IOPS=0, BW=443KiB/s (453kB/s)(2048KiB/4625msec) clat (msec): min=167, max=523, avg=345.60, stdev=251.47 lat (msec): min=167, max=523, avg=345.60, stdev=251.47 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 1378, max= 2048, per=38.69%, avg=1713.00, stdev=473.76, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2214KiB/s (2267kB/s)(10.0MiB/4625msec); 0 zone resets clat (msec): min=88, max=1288, avg=378.85, stdev=356.97 lat (msec): min=88, max=1288, avg=379.49, stdev=356.83 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 129], | 30.00th=[ 144], 40.00th=[ 178], 50.00th=[ 222], 60.00th=[ 313], | 70.00th=[ 363], 80.00th=[ 514], 90.00th=[ 550], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 1980, max= 4096, per=45.88%, avg=2844.20, stdev=1135.20, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.04%, sys=7.46%, ctx=96, 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=178604: Fri Aug 21 09:52:53 2026 read: IOPS=1, BW=1426KiB/s (1460kB/s)(6144KiB/4308msec) clat (msec): min=50, max=322, avg=146.33, stdev=110.38 lat (msec): min=50, max=322, avg=146.33, stdev=110.38 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 85], | 30.00th=[ 85], 40.00th=[ 85], 50.00th=[ 85], 60.00th=[ 90], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 2035, max= 4079, per=76.61%, avg=3392.33, stdev=1175.51, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1426KiB/s (1460kB/s)(6144KiB/4308msec); 0 zone resets clat (msec): min=199, max=1033, avg=515.63, stdev=336.49 lat (msec): min=199, max=1033, avg=515.97, stdev=336.72 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 405], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1387, max= 4071, per=37.16%, avg=2303.40, stdev=1025.70, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=33.33%, 250=16.67%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=6.08%, ctx=93, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178605: Fri Aug 21 09:52:53 2026 read: IOPS=1, BW=1114KiB/s (1140kB/s)(5120KiB/4598msec) clat (msec): min=65, max=168, avg=112.24, stdev=38.74 lat (msec): min=65, max=168, avg=112.24, stdev=38.74 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 66], | 30.00th=[ 96], 40.00th=[ 96], 50.00th=[ 102], 60.00th=[ 102], | 70.00th=[ 130], 80.00th=[ 130], 90.00th=[ 169], 95.00th=[ 169], | 99.00th=[ 169], 99.50th=[ 169], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 4063, max= 4071, per=91.85%, 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=1559KiB/s (1596kB/s)(7168KiB/4598msec); 0 zone resets clat (msec): min=76, max=1123, avg=529.86, stdev=446.20 lat (msec): min=77, max=1125, avg=530.14, stdev=446.42 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 111], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 342], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 1028], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 2031, max= 4079, per=43.84%, avg=2717.67, stdev=1178.96, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=41.67%, 500=8.33%, 1000=8.33%, 2000=16.67% cpu : usr=0.02%, sys=8.64%, ctx=145, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4428KiB/s (4534kB/s), 443KiB/s-1942KiB/s (453kB/s-1989kB/s), io=20.0MiB (20.0MB), run=3691-4625msec WRITE: bw=6199KiB/s (6348kB/s), 1387KiB/s-2214KiB/s (1420kB/s-2267kB/s), io=28.0MiB (29.4MB), run=3691-4625msec 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=178611: Fri Aug 21 09:53:07 2026 read: IOPS=2, BW=11.8MiB/s (12.4MB/s)(12.0MiB/1017msec) clat (msec): min=256, max=358, avg=316.70, stdev=53.60 lat (msec): min=256, max=358, avg=316.70, stdev=53.60 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7953, max= 8192, per=100.00%, avg=8072.50, stdev=169.00, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=11.02%, ctx=60, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178612: Fri Aug 21 09:53:07 2026 read: IOPS=0, BW=1290KiB/s (1321kB/s)(4096KiB/3174msec) clat (nsec): min=725379k, max=725379k, avg=725379133.00, stdev= 0.00 lat (nsec): min=725382k, max=725382k, avg=725381546.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2581KiB/s (2643kB/s)(8192KiB/3174msec); 0 zone resets clat (msec): min=1034, max=1297, avg=1165.67, stdev=185.74 lat (msec): min=1034, max=1297, avg=1166.24, stdev=185.78 clat percentiles (msec): | 1.00th=[ 1036], 5.00th=[ 1036], 10.00th=[ 1036], 20.00th=[ 1036], | 30.00th=[ 1036], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1301], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8047, max= 8047, per=77.95%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.90%, ctx=75, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178613: Fri Aug 21 09:53:07 2026 write: IOPS=1, BW=4655KiB/s (4766kB/s)(12.0MiB/2640msec); 0 zone resets clat (msec): min=492, max=1025, avg=840.84, stdev=301.68 lat (msec): min=493, max=1026, avg=842.22, stdev=302.54 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 5490, max= 8175, per=66.19%, avg=6832.50, stdev=1898.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.32%, ctx=80, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178614: Fri Aug 21 09:53:07 2026 write: IOPS=1, BW=5247KiB/s (5373kB/s)(12.0MiB/2342msec); 0 zone resets clat (msec): min=276, max=1163, avg=766.39, stdev=450.72 lat (msec): min=276, max=1163, avg=766.72, stdev=450.66 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 5649, max= 8110, per=66.64%, avg=6879.50, stdev=1740.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.89%, ctx=50, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5162KiB/s (5286kB/s), 1290KiB/s-11.8MiB/s (1321kB/s-12.4MB/s), io=16.0MiB (16.8MB), run=1017-3174msec WRITE: bw=10.1MiB/s (10.6MB/s), 2581KiB/s-5247KiB/s (2643kB/s-5373kB/s), io=32.0MiB (33.6MB), run=2342-3174msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178617: Fri Aug 21 09:53:07 2026 read: IOPS=1, BW=5198KiB/s (5323kB/s)(12.0MiB/2364msec) clat (msec): min=604, max=947, avg=777.20, stdev=171.68 lat (msec): min=604, max=947, avg=777.20, stdev=171.68 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=16.21%, ctx=340, 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=178618: Fri Aug 21 09:53:07 2026 read: IOPS=0, BW=1465KiB/s (1501kB/s)(4096KiB/2795msec) clat (nsec): min=833873k, max=833873k, avg=833872749.00, stdev= 0.00 lat (nsec): min=833874k, max=833874k, avg=833874454.00, 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2931KiB/s (3001kB/s)(8192KiB/2795msec); 0 zone resets clat (msec): min=310, max=1644, avg=977.91, stdev=943.23 lat (msec): min=311, max=1648, avg=979.89, stdev=945.38 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 1653], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 8110, max= 8110, per=69.82%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.47%, ctx=170, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178619: Fri Aug 21 09:53:07 2026 write: IOPS=1, BW=4356KiB/s (4460kB/s)(12.0MiB/2821msec); 0 zone resets clat (msec): min=330, max=1245, avg=936.74, stdev=524.70 lat (msec): min=331, max=1245, avg=937.08, stdev=524.65 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8110, max= 8110, per=69.82%, avg=8110.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.04%, sys=5.25%, ctx=79, 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=178620: Fri Aug 21 09:53:07 2026 write: IOPS=1, BW=6660KiB/s (6820kB/s)(12.0MiB/1845msec); 0 zone resets clat (msec): min=485, max=782, avg=612.30, stdev=153.34 lat (msec): min=489, max=785, avg=614.59, stdev=153.29 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 8110, max= 8175, per=70.10%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=5.31%, ctx=41, 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=5862KiB/s (6003kB/s), 1465KiB/s-5198KiB/s (1501kB/s-5323kB/s), io=16.0MiB (16.8MB), run=2364-2795msec WRITE: bw=11.3MiB/s (11.9MB/s), 2931KiB/s-6660KiB/s (3001kB/s-6820kB/s), io=32.0MiB (33.6MB), run=1845-2821msec