== sanity test 398b: DIO and buffer IO race ============== 04:24:19 (1789028659) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.90007 s, 7.3 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=179142: Thu Sep 10 04:27:02 2026 read: IOPS=10, BW=43.1KiB/s (44.1kB/s)(5992KiB/139160msec) clat (usec): min=38, max=284033, avg=49936.48, stdev=33543.90 lat (usec): min=39, max=284035, avg=49939.57, stdev=33544.01 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 188], 10.00th=[ 17433], 20.00th=[ 25035], | 30.00th=[ 30016], 40.00th=[ 35914], 50.00th=[ 42730], 60.00th=[ 51119], | 70.00th=[ 61604], 80.00th=[ 72877], 90.00th=[ 91751], 95.00th=[107480], | 99.00th=[160433], 99.50th=[181404], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 127, per=25.42%, avg=42.71, stdev=18.92, samples=273 iops : min= 1, max= 31, avg=10.01, stdev= 4.76, samples=273 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6296KiB/139160msec); 0 zone resets clat (usec): min=1014, max=1021.6k, avg=40517.86, stdev=47949.85 lat (usec): min=1015, max=1021.6k, avg=40524.39, stdev=47947.90 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1401], 10.00th=[ 2212], | 20.00th=[ 4621], 30.00th=[ 8455], 40.00th=[ 18220], | 50.00th=[ 28705], 60.00th=[ 39060], 70.00th=[ 50594], | 80.00th=[ 69731], 90.00th=[ 96994], 95.00th=[ 120062], | 99.00th=[ 183501], 99.50th=[ 202376], 99.90th=[ 233833], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 7, max= 112, per=25.60%, avg=45.06, stdev=19.75, samples=272 iops : min= 1, max= 28, avg=10.60, stdev= 4.98, samples=272 lat (usec) : 50=0.20%, 100=2.02%, 250=0.23%, 500=0.10%, 750=0.07% lat (msec) : 2=4.69%, 4=4.52%, 10=8.01%, 20=8.04%, 50=36.33% lat (msec) : 100=27.51%, 250=8.17%, 500=0.10%, 2000=0.03% cpu : usr=0.08%, sys=5.06%, ctx=6472, 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=179143: Thu Sep 10 04:27:02 2026 read: IOPS=10, BW=42.3KiB/s (43.3kB/s)(5940KiB/140451msec) clat (usec): min=37, max=251006, avg=51157.15, stdev=34624.54 lat (usec): min=37, max=251008, avg=51160.76, stdev=34622.38 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 486], 10.00th=[ 19006], 20.00th=[ 25822], | 30.00th=[ 31327], 40.00th=[ 37487], 50.00th=[ 43779], 60.00th=[ 51119], | 70.00th=[ 60556], 80.00th=[ 72877], 90.00th=[ 93848], 95.00th=[113771], | 99.00th=[170918], 99.50th=[208667], 99.90th=[235930], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 5, max= 94, per=24.94%, avg=41.89, stdev=17.85, samples=276 iops : min= 1, max= 23, avg= 9.80, stdev= 4.48, samples=276 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6348KiB/140451msec); 0 zone resets clat (usec): min=1010, max=1087.0k, avg=40232.40, stdev=48974.87 lat (usec): min=1011, max=1087.0k, avg=40235.73, stdev=48974.40 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1385], 10.00th=[ 2180], | 20.00th=[ 4621], 30.00th=[ 8586], 40.00th=[ 16909], | 50.00th=[ 27657], 60.00th=[ 39060], 70.00th=[ 50070], | 80.00th=[ 69731], 90.00th=[ 95945], 95.00th=[ 116917], | 99.00th=[ 181404], 99.50th=[ 217056], 99.90th=[ 312476], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 5, max= 126, per=25.50%, avg=44.87, stdev=20.29, samples=276 iops : min= 1, max= 31, avg=10.55, stdev= 5.09, samples=276 lat (usec) : 50=0.10%, 100=1.79%, 250=0.39%, 500=0.16% lat (msec) : 2=4.72%, 4=4.59%, 10=7.42%, 20=8.20%, 50=37.17% lat (msec) : 100=26.79%, 250=8.50%, 500=0.13%, 2000=0.03% cpu : usr=0.08%, sys=5.10%, ctx=6674, 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=179144: Thu Sep 10 04:27:02 2026 read: IOPS=10, BW=42.4KiB/s (43.4kB/s)(6028KiB/142133msec) clat (usec): min=35, max=306698, avg=50148.14, stdev=33546.39 lat (usec): min=36, max=306700, avg=50153.48, stdev=33545.31 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 12256], 10.00th=[ 18482], 20.00th=[ 24511], | 30.00th=[ 30278], 40.00th=[ 35914], 50.00th=[ 42206], 60.00th=[ 50594], | 70.00th=[ 60031], 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[109577], | 99.00th=[156238], 99.50th=[187696], 99.90th=[287310], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 95, per=25.38%, avg=42.64, stdev=17.98, samples=275 iops : min= 1, max= 23, avg= 9.99, stdev= 4.54, samples=275 write: IOPS=11, BW=44.0KiB/s (45.1kB/s)(6260KiB/142133msec); 0 zone resets clat (usec): min=997, max=1120.1k, avg=42147.61, stdev=50730.27 lat (usec): min=998, max=1120.1k, avg=42156.89, stdev=50726.00 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1401], 10.00th=[ 2089], | 20.00th=[ 4359], 30.00th=[ 8586], 40.00th=[ 19268], | 50.00th=[ 30278], 60.00th=[ 40109], 70.00th=[ 53216], | 80.00th=[ 70779], 90.00th=[ 102237], 95.00th=[ 126354], | 99.00th=[ 183501], 99.50th=[ 210764], 99.90th=[ 308282], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 7, max= 95, per=25.08%, avg=44.15, stdev=19.60, samples=276 iops : min= 1, max= 23, avg=10.37, stdev= 4.93, samples=276 lat (usec) : 50=0.16%, 100=1.37%, 250=0.20%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.07% lat (msec) : 2=4.88%, 4=4.36%, 10=7.23%, 20=8.79%, 50=36.26% lat (msec) : 100=27.18%, 250=9.02%, 500=0.26%, 2000=0.03% cpu : usr=0.08%, sys=5.09%, ctx=6608, 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=179145: Thu Sep 10 04:27:02 2026 read: IOPS=10, BW=42.5KiB/s (43.6kB/s)(6052KiB/142250msec) clat (usec): min=40, max=316593, avg=51694.73, stdev=34443.61 lat (usec): min=40, max=316594, avg=51698.62, stdev=34446.29 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 8717], 10.00th=[ 19530], 20.00th=[ 25822], | 30.00th=[ 31851], 40.00th=[ 37487], 50.00th=[ 44827], 60.00th=[ 52691], | 70.00th=[ 62129], 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[111674], | 99.00th=[170918], 99.50th=[202376], 99.90th=[263193], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 111, per=25.19%, avg=42.33, stdev=17.03, samples=278 iops : min= 1, max= 27, avg= 9.91, stdev= 4.28, samples=278 write: IOPS=10, BW=43.8KiB/s (44.9kB/s)(6236KiB/142250msec); 0 zone resets clat (usec): min=758, max=1086.8k, avg=40739.00, stdev=48526.15 lat (usec): min=759, max=1086.8k, avg=40746.33, stdev=48522.32 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1434], 10.00th=[ 2073], | 20.00th=[ 4424], 30.00th=[ 8848], 40.00th=[ 17433], | 50.00th=[ 29230], 60.00th=[ 40109], 70.00th=[ 51119], | 80.00th=[ 71828], 90.00th=[ 98042], 95.00th=[ 126354], | 99.00th=[ 170918], 99.50th=[ 191890], 99.90th=[ 233833], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 110, per=24.63%, avg=43.35, stdev=19.60, samples=279 iops : min= 1, max= 27, avg=10.17, stdev= 4.92, samples=279 lat (usec) : 50=0.10%, 100=1.86%, 250=0.29%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.85%, 4=4.65%, 10=6.87%, 20=7.78%, 50=36.30% lat (msec) : 100=28.42%, 250=8.56%, 500=0.13%, 2000=0.03% cpu : usr=0.07%, sys=5.18%, ctx=6686, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=169KiB/s (173kB/s), 42.3KiB/s-43.1KiB/s (43.3kB/s-44.1kB/s), io=23.4MiB (24.6MB), run=139160-142250msec WRITE: bw=177KiB/s (181kB/s), 43.8KiB/s-45.2KiB/s (44.9kB/s-46.3kB/s), io=24.6MiB (25.7MB), run=139160-142250msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179146: Thu Sep 10 04:27:47 2026 read: IOPS=8, BW=32.2KiB/s (32.9kB/s)(5992KiB/186373msec) clat (msec): min=5, max=1012, avg=49.46, stdev=51.78 lat (msec): min=5, max=1012, avg=49.46, stdev=51.78 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 51], 80.00th=[ 72], 90.00th=[ 113], 95.00th=[ 142], | 99.00th=[ 236], 99.50th=[ 271], 99.90th=[ 334], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 120, per=25.60%, avg=32.76, stdev=23.54, samples=355 iops : min= 1, max= 30, avg= 7.53, stdev= 5.92, samples=355 write: IOPS=8, BW=33.8KiB/s (34.6kB/s)(6296KiB/186373msec); 0 zone resets clat (msec): min=10, max=360, avg=71.02, stdev=48.09 lat (msec): min=10, max=360, avg=71.03, stdev=48.09 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 83], 80.00th=[ 105], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 232], 99.50th=[ 271], 99.90th=[ 330], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 112, per=25.19%, avg=33.75, stdev=21.66, samples=362 iops : min= 1, max= 28, avg= 7.77, stdev= 5.45, samples=362 lat (msec) : 10=1.30%, 20=11.72%, 50=43.46%, 100=26.60%, 250=16.31% lat (msec) : 500=0.59%, 2000=0.03% cpu : usr=0.07%, sys=1.75%, ctx=4879, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179147: Thu Sep 10 04:27:47 2026 read: IOPS=7, BW=31.8KiB/s (32.6kB/s)(5940KiB/186730msec) clat (msec): min=5, max=1075, avg=49.07, stdev=53.21 lat (msec): min=5, max=1075, avg=49.07, stdev=53.21 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 107], 95.00th=[ 144], | 99.00th=[ 241], 99.50th=[ 288], 99.90th=[ 368], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 143, per=25.90%, avg=33.15, stdev=23.98, samples=346 iops : min= 1, max= 35, avg= 7.63, stdev= 6.03, samples=346 write: IOPS=8, BW=33.0KiB/s (34.8kB/s)(6348KiB/186730msec); 0 zone resets clat (msec): min=12, max=364, avg=71.46, stdev=50.43 lat (msec): min=12, max=364, avg=71.47, stdev=50.42 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 68], | 70.00th=[ 85], 80.00th=[ 108], 90.00th=[ 142], 95.00th=[ 169], | 99.00th=[ 268], 99.50th=[ 292], 99.90th=[ 330], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 104, per=25.24%, avg=33.82, stdev=21.33, samples=362 iops : min= 1, max= 26, avg= 7.80, stdev= 5.37, samples=362 lat (msec) : 10=1.86%, 20=12.17%, 50=43.88%, 100=24.90%, 250=16.18% lat (msec) : 500=0.98%, 2000=0.03% cpu : usr=0.06%, sys=1.67%, ctx=4706, 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=179148: Thu Sep 10 04:27:47 2026 read: IOPS=8, BW=32.4KiB/s (33.2kB/s)(6028KiB/186001msec) clat (msec): min=6, max=330, avg=48.74, stdev=43.73 lat (msec): min=6, max=330, avg=48.74, stdev=43.73 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 52], 80.00th=[ 74], 90.00th=[ 109], 95.00th=[ 138], | 99.00th=[ 218], 99.50th=[ 243], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 128, per=26.10%, avg=33.41, stdev=23.31, samples=350 iops : min= 1, max= 32, avg= 7.69, stdev= 5.87, samples=350 write: IOPS=8, BW=33.7KiB/s (34.5kB/s)(6260KiB/186001msec); 0 zone resets clat (msec): min=12, max=1119, avg=71.64, stdev=57.55 lat (msec): min=12, max=1119, avg=71.64, stdev=57.55 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 84], 80.00th=[ 107], 90.00th=[ 142], 95.00th=[ 174], | 99.00th=[ 251], 99.50th=[ 305], 99.90th=[ 351], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 119, per=25.31%, avg=33.92, stdev=22.70, samples=358 iops : min= 1, max= 29, avg= 7.82, stdev= 5.71, samples=358 lat (msec) : 10=1.27%, 20=12.30%, 50=44.53%, 100=24.51%, 250=16.60% lat (msec) : 500=0.75%, 2000=0.03% cpu : usr=0.06%, sys=1.69%, ctx=4819, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179149: Thu Sep 10 04:27:47 2026 read: IOPS=8, BW=32.6KiB/s (33.4kB/s)(6052KiB/185592msec) clat (msec): min=6, max=329, avg=47.94, stdev=43.17 lat (msec): min=6, max=329, avg=47.94, stdev=43.17 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 52], 80.00th=[ 70], 90.00th=[ 105], 95.00th=[ 138], | 99.00th=[ 220], 99.50th=[ 247], 99.90th=[ 326], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 118, per=26.68%, avg=34.15, stdev=23.07, samples=344 iops : min= 1, max= 29, avg= 7.87, stdev= 5.80, samples=344 write: IOPS=8, BW=33.6KiB/s (34.4kB/s)(6236KiB/185592msec); 0 zone resets clat (msec): min=10, max=1058, avg=72.22, stdev=56.36 lat (msec): min=10, max=1058, avg=72.22, stdev=56.36 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 67], | 70.00th=[ 85], 80.00th=[ 106], 90.00th=[ 144], 95.00th=[ 174], | 99.00th=[ 239], 99.50th=[ 296], 99.90th=[ 368], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 110, per=25.10%, avg=33.64, stdev=21.42, samples=359 iops : min= 1, max= 27, avg= 7.75, stdev= 5.39, samples=359 lat (msec) : 10=1.56%, 20=11.26%, 50=44.86%, 100=25.68%, 250=15.95% lat (msec) : 500=0.65%, 2000=0.03% cpu : usr=0.05%, sys=1.71%, ctx=4826, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=129KiB/s (132kB/s), 31.8KiB/s-32.6KiB/s (32.6kB/s-33.4kB/s), io=23.4MiB (24.6MB), run=185592-186730msec WRITE: bw=135KiB/s (138kB/s), 33.6KiB/s-33.0KiB/s (34.4kB/s-34.8kB/s), io=24.6MiB (25.7MB), run=185592-186730msec 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=179193: Thu Sep 10 04:28:33 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(5920KiB/35871msec) clat (usec): min=54, max=177401, avg=48905.17, stdev=32638.56 lat (usec): min=56, max=177401, avg=48906.59, stdev=32638.51 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 75], 10.00th=[ 12911], 20.00th=[ 25560], | 30.00th=[ 32113], 40.00th=[ 37487], 50.00th=[ 44303], 60.00th=[ 49546], | 70.00th=[ 59507], 80.00th=[ 70779], 90.00th=[ 91751], 95.00th=[112722], | 99.00th=[158335], 99.50th=[168821], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 62, max= 379, per=25.12%, avg=164.80, stdev=60.36, samples=70 iops : min= 3, max= 23, avg= 9.54, stdev= 3.82, samples=70 write: IOPS=11, BW=178KiB/s (182kB/s)(6368KiB/35871msec); 0 zone resets clat (usec): min=1618, max=218941, avg=43882.52, stdev=40216.07 lat (usec): min=1622, max=218942, avg=43899.91, stdev=40222.04 clat percentiles (usec): | 1.00th=[ 1991], 5.00th=[ 3064], 10.00th=[ 4948], 20.00th=[ 8586], | 30.00th=[ 13304], 40.00th=[ 23462], 50.00th=[ 32637], 60.00th=[ 43779], | 70.00th=[ 58983], 80.00th=[ 74974], 90.00th=[ 96994], 95.00th=[127402], | 99.00th=[173016], 99.50th=[208667], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 30, max= 352, per=25.78%, avg=178.14, stdev=77.39, samples=70 iops : min= 1, max= 22, avg=10.37, stdev= 4.93, samples=70 lat (usec) : 100=3.52%, 250=0.91%, 500=0.13% lat (msec) : 2=0.52%, 4=3.26%, 10=8.46%, 20=9.24%, 50=36.07% lat (msec) : 100=29.82%, 250=8.07% cpu : usr=0.09%, sys=6.02%, ctx=1869, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179194: Thu Sep 10 04:28:33 2026 read: IOPS=9, BW=158KiB/s (161kB/s)(5744KiB/36465msec) clat (usec): min=53, max=187362, avg=53510.08, stdev=33058.43 lat (usec): min=54, max=187363, avg=53514.97, stdev=33058.14 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 101], 10.00th=[ 19006], 20.00th=[ 27657], | 30.00th=[ 34341], 40.00th=[ 42206], 50.00th=[ 49546], 60.00th=[ 56886], | 70.00th=[ 67634], 80.00th=[ 79168], 90.00th=[ 95945], 95.00th=[111674], | 99.00th=[160433], 99.50th=[181404], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 31, max= 288, per=23.97%, avg=157.25, stdev=67.14, samples=72 iops : min= 1, max= 18, avg= 9.06, stdev= 4.26, samples=72 write: IOPS=11, BW=179KiB/s (184kB/s)(6544KiB/36465msec); 0 zone resets clat (usec): min=1572, max=213584, avg=41458.35, stdev=38840.31 lat (usec): min=1573, max=213587, avg=41460.88, stdev=38840.26 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2835], 10.00th=[ 4490], 20.00th=[ 7832], | 30.00th=[ 12780], 40.00th=[ 20579], 50.00th=[ 31851], 60.00th=[ 41681], | 70.00th=[ 54789], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[116917], | 99.00th=[175113], 99.50th=[189793], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 62, max= 345, per=25.87%, avg=178.78, stdev=69.19, samples=72 iops : min= 3, max= 21, avg=10.42, stdev= 4.42, samples=72 lat (usec) : 100=2.21%, 250=1.04%, 500=0.39%, 1000=0.13% lat (msec) : 2=1.17%, 4=3.52%, 10=8.59%, 20=8.85%, 50=32.81% lat (msec) : 100=33.33%, 250=7.94% cpu : usr=0.08%, sys=5.90%, ctx=1882, 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=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=179195: Thu Sep 10 04:28:33 2026 read: IOPS=11, BW=176KiB/s (180kB/s)(6256KiB/35527msec) clat (usec): min=45, max=234971, avg=52477.80, stdev=35118.41 lat (usec): min=45, max=234973, avg=52493.49, stdev=35098.98 clat percentiles (usec): | 1.00th=[ 69], 5.00th=[ 125], 10.00th=[ 19530], 20.00th=[ 28181], | 30.00th=[ 33817], 40.00th=[ 39584], 50.00th=[ 47449], 60.00th=[ 51643], | 70.00th=[ 61080], 80.00th=[ 73925], 90.00th=[ 93848], 95.00th=[113771], | 99.00th=[173016], 99.50th=[217056], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 62, max= 314, per=26.85%, avg=176.13, stdev=64.99, samples=70 iops : min= 3, max= 19, avg=10.26, stdev= 4.16, samples=70 write: IOPS=10, BW=170KiB/s (174kB/s)(6032KiB/35527msec); 0 zone resets clat (usec): min=1750, max=186999, avg=39497.60, stdev=38367.05 lat (usec): min=1753, max=187002, avg=39506.16, stdev=38371.42 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 13], 40.00th=[ 20], 50.00th=[ 29], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 87], 95.00th=[ 122], | 99.00th=[ 180], 99.50th=[ 186], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 30, max= 380, per=24.48%, avg=169.17, stdev=78.40, samples=70 iops : min= 1, max= 23, avg= 9.80, stdev= 5.00, samples=70 lat (usec) : 50=0.13%, 100=1.69%, 250=1.43%, 500=0.26%, 1000=0.13% lat (msec) : 2=0.52%, 4=4.04%, 10=7.81%, 20=9.38%, 50=37.63% lat (msec) : 100=29.17%, 250=7.81% cpu : usr=0.05%, sys=5.81%, ctx=1898, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179196: Thu Sep 10 04:28:33 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(6032KiB/35134msec) clat (usec): min=41, max=336956, avg=50823.12, stdev=37564.31 lat (usec): min=41, max=336957, avg=50826.55, stdev=37563.00 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 74], 10.00th=[ 125], 20.00th=[ 24773], | 30.00th=[ 31851], 40.00th=[ 38536], 50.00th=[ 45876], 60.00th=[ 54264], | 70.00th=[ 63701], 80.00th=[ 74974], 90.00th=[ 95945], 95.00th=[114820], | 99.00th=[160433], 99.50th=[206570], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 31, max= 447, per=26.26%, avg=172.25, stdev=72.76, samples=68 iops : min= 1, max= 27, avg=10.00, stdev= 4.59, samples=68 write: IOPS=11, BW=178KiB/s (182kB/s)(6256KiB/35134msec); 0 zone resets clat (usec): min=1621, max=284168, avg=39899.21, stdev=39238.59 lat (usec): min=1623, max=284171, avg=39903.96, stdev=39237.32 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 9], | 30.00th=[ 13], 40.00th=[ 20], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 50], 80.00th=[ 64], 90.00th=[ 90], 95.00th=[ 126], | 99.00th=[ 180], 99.50th=[ 192], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 446, per=25.75%, avg=177.93, stdev=85.94, samples=69 iops : min= 1, max= 27, avg=10.36, stdev= 5.44, samples=69 lat (usec) : 50=0.26%, 100=4.04%, 250=0.78%, 500=0.52%, 750=0.26% lat (usec) : 1000=0.26% lat (msec) : 2=0.52%, 4=3.39%, 10=9.38%, 20=8.98%, 50=34.24% lat (msec) : 100=29.17%, 250=7.94%, 500=0.26% cpu : usr=0.07%, sys=5.91%, ctx=1828, 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=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=657KiB/s (673kB/s), 158KiB/s-176KiB/s (161kB/s-180kB/s), io=23.4MiB (24.5MB), run=35134-36465msec WRITE: bw=691KiB/s (708kB/s), 170KiB/s-179KiB/s (174kB/s-184kB/s), io=24.6MiB (25.8MB), run=35134-36465msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179189: Thu Sep 10 04:28:45 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(5920KiB/49067msec) clat (msec): min=6, max=267, avg=51.86, stdev=41.95 lat (msec): min=6, max=267, avg=51.86, stdev=41.95 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 58], 80.00th=[ 74], 90.00th=[ 107], 95.00th=[ 140], | 99.00th=[ 218], 99.50th=[ 259], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 380, per=24.54%, avg=119.77, stdev=70.99, samples=94 iops : min= 1, max= 23, avg= 6.66, stdev= 4.51, samples=94 write: IOPS=8, BW=130KiB/s (133kB/s)(6368KiB/49067msec); 0 zone resets clat (msec): min=14, max=337, avg=74.56, stdev=46.50 lat (msec): min=14, max=337, avg=74.57, stdev=46.51 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 59], 60.00th=[ 73], | 70.00th=[ 90], 80.00th=[ 107], 90.00th=[ 138], 95.00th=[ 161], | 99.00th=[ 243], 99.50th=[ 284], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 30, max= 349, per=25.07%, avg=128.62, stdev=68.89, samples=95 iops : min= 1, max= 21, avg= 7.22, stdev= 4.36, samples=95 lat (msec) : 10=0.65%, 20=7.68%, 50=42.19%, 100=31.77%, 250=17.06% lat (msec) : 500=0.65% cpu : usr=0.02%, sys=1.82%, ctx=1203, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179190: Thu Sep 10 04:28:45 2026 read: IOPS=7, BW=118KiB/s (121kB/s)(5744KiB/48770msec) clat (msec): min=10, max=267, avg=50.57, stdev=41.17 lat (msec): min=10, max=268, avg=50.58, stdev=41.17 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 52], 80.00th=[ 70], 90.00th=[ 114], 95.00th=[ 150], | 99.00th=[ 194], 99.50th=[ 230], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 30, max= 412, per=24.96%, avg=121.80, stdev=72.76, samples=92 iops : min= 1, max= 25, avg= 6.78, stdev= 4.60, samples=92 write: IOPS=8, BW=134KiB/s (137kB/s)(6544KiB/48770msec); 0 zone resets clat (msec): min=15, max=351, avg=74.24, stdev=46.12 lat (msec): min=15, max=351, avg=74.25, stdev=46.12 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 62], 60.00th=[ 72], | 70.00th=[ 85], 80.00th=[ 103], 90.00th=[ 146], 95.00th=[ 171], | 99.00th=[ 220], 99.50th=[ 245], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 319, per=26.88%, avg=137.87, stdev=70.57, samples=93 iops : min= 1, max= 19, avg= 7.81, stdev= 4.46, samples=93 lat (msec) : 20=8.33%, 50=42.71%, 100=32.68%, 250=15.89%, 500=0.39% cpu : usr=0.06%, sys=1.87%, ctx=1181, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179191: Thu Sep 10 04:28:45 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(6256KiB/48291msec) clat (msec): min=8, max=255, avg=49.65, stdev=39.75 lat (msec): min=8, max=255, avg=49.65, stdev=39.75 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 44], | 70.00th=[ 52], 80.00th=[ 64], 90.00th=[ 104], 95.00th=[ 133], | 99.00th=[ 215], 99.50th=[ 251], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 29, max= 410, per=26.82%, avg=130.88, stdev=78.79, samples=94 iops : min= 1, max= 25, avg= 7.37, stdev= 5.00, samples=94 write: IOPS=7, BW=125KiB/s (128kB/s)(6032KiB/48291msec); 0 zone resets clat (msec): min=17, max=328, avg=76.45, stdev=50.93 lat (msec): min=17, max=328, avg=76.46, stdev=50.93 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 38], | 30.00th=[ 45], 40.00th=[ 52], 50.00th=[ 61], 60.00th=[ 72], | 70.00th=[ 86], 80.00th=[ 113], 90.00th=[ 142], 95.00th=[ 174], | 99.00th=[ 271], 99.50th=[ 313], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 320, per=24.07%, avg=123.46, stdev=65.61, samples=95 iops : min= 1, max= 20, avg= 6.91, stdev= 4.18, samples=95 lat (msec) : 10=0.26%, 20=6.77%, 50=47.14%, 100=28.39%, 250=16.67% lat (msec) : 500=0.78% cpu : usr=0.06%, sys=1.88%, ctx=1194, 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=179192: Thu Sep 10 04:28:45 2026 read: IOPS=7, BW=124KiB/s (127kB/s)(6032KiB/48644msec) clat (msec): min=8, max=267, avg=51.43, stdev=41.72 lat (msec): min=8, max=267, avg=51.43, stdev=41.72 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 55], 80.00th=[ 69], 90.00th=[ 109], 95.00th=[ 146], | 99.00th=[ 215], 99.50th=[ 264], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 351, per=25.62%, avg=125.03, stdev=74.01, samples=93 iops : min= 1, max= 21, avg= 6.99, stdev= 4.69, samples=93 write: IOPS=8, BW=129KiB/s (132kB/s)(6256KiB/48644msec); 0 zone resets clat (msec): min=12, max=436, avg=74.34, stdev=50.22 lat (msec): min=12, max=436, avg=74.34, stdev=50.22 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 54], 50.00th=[ 60], 60.00th=[ 69], | 70.00th=[ 83], 80.00th=[ 101], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 268], 99.50th=[ 300], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 31, max= 378, per=24.97%, avg=128.09, stdev=64.61, samples=94 iops : min= 1, max= 23, avg= 7.19, stdev= 4.11, samples=94 lat (msec) : 10=0.26%, 20=8.07%, 50=41.80%, 100=34.24%, 250=14.45% lat (msec) : 500=1.17% cpu : usr=0.05%, sys=1.95%, ctx=1237, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=488KiB/s (500kB/s), 118KiB/s-130KiB/s (121kB/s-133kB/s), io=23.4MiB (24.5MB), run=48291-49067msec WRITE: bw=514KiB/s (526kB/s), 125KiB/s-134KiB/s (128kB/s-137kB/s), io=24.6MiB (25.8MB), run=48291-49067msec 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=179214: Thu Sep 10 04:29:04 2026 read: IOPS=0, BW=999KiB/s (1023kB/s)(7168KiB/7178msec) clat (usec): min=550, max=4010.0k, avg=749748.59, stdev=1443207.13 lat (usec): min=552, max=4010.0k, avg=749751.47, stdev=1443206.92 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], | 20.00th=[ 173016], 30.00th=[ 179307], 40.00th=[ 179307], | 50.00th=[ 200279], 60.00th=[ 254804], 70.00th=[ 254804], | 80.00th=[ 429917], 90.00th=[4009755], 95.00th=[4009755], | 99.00th=[4009755], 99.50th=[4009755], 99.90th=[4009755], | 99.95th=[4009755], 99.99th=[4009755] bw ( KiB/s): min= 1992, max= 4071, per=100.00%, avg=2437.00, stdev=913.69, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=713KiB/s (730kB/s)(5120KiB/7178msec); 0 zone resets clat (msec): min=120, max=965, avg=368.03, stdev=348.48 lat (msec): min=120, max=965, avg=368.77, stdev=348.53 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 122], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 199], 60.00th=[ 199], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 2035, max= 3984, per=79.46%, avg=2689.00, stdev=1121.52, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=8.46%, ctx=626, 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=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=179215: Thu Sep 10 04:29:04 2026 read: IOPS=0, BW=242KiB/s (248kB/s)(2048KiB/8471msec) clat (msec): min=25, max=691, avg=358.57, stdev=471.47 lat (msec): min=25, max=691, avg=358.57, stdev=471.47 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 26], 10.00th=[ 26], 20.00th=[ 26], | 30.00th=[ 26], 40.00th=[ 26], 50.00th=[ 26], 60.00th=[ 693], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 2031, max= 2043, per=84.28%, avg=2037.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1209KiB/s (1238kB/s)(10.0MiB/8471msec); 0 zone resets clat (msec): min=148, max=4187, avg=772.49, stdev=1229.08 lat (msec): min=148, max=4187, avg=772.59, stdev=1229.08 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 226], | 30.00th=[ 247], 40.00th=[ 253], 50.00th=[ 259], 60.00th=[ 288], | 70.00th=[ 393], 80.00th=[ 718], 90.00th=[ 1003], 95.00th=[ 4178], | 99.00th=[ 4178], 99.50th=[ 4178], 99.90th=[ 4178], 99.95th=[ 4178], | 99.99th=[ 4178] bw ( KiB/s): min= 1992, max= 4071, per=89.85%, avg=3040.67, stdev=1114.24, samples=6 iops : min= 1, max= 3, avg= 2.17, stdev= 0.98, samples=6 lat (msec) : 50=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=7.36%, ctx=161, 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=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=179216: Thu Sep 10 04:29:04 2026 read: IOPS=0, BW=919KiB/s (941kB/s)(6144KiB/6689msec) clat (usec): min=885, max=297024, avg=52475.22, stdev=119861.22 lat (usec): min=887, max=297026, avg=52476.77, stdev=119861.30 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 889], 10.00th=[ 889], 20.00th=[ 1270], | 30.00th=[ 1270], 40.00th=[ 1647], 50.00th=[ 1647], 60.00th=[ 3261], | 70.00th=[ 10814], 80.00th=[ 10814], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 2027, max= 6144, per=100.00%, avg=4085.50, stdev=2911.16, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=0, BW=919KiB/s (941kB/s)(6144KiB/6689msec); 0 zone resets clat (msec): min=143, max=4552, avg=1037.46, stdev=1734.46 lat (msec): min=143, max=4552, avg=1037.57, stdev=1734.58 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 443], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 4530], 95.00th=[ 4530], | 99.00th=[ 4530], 99.50th=[ 4530], 99.90th=[ 4530], 99.95th=[ 4530], | 99.99th=[ 4530] bw ( KiB/s): min= 2027, max= 4096, per=100.00%, avg=3403.33, stdev=1191.95, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (usec) : 1000=8.33% lat (msec) : 2=16.67%, 4=8.33%, 20=8.33%, 250=25.00%, 500=16.67% lat (msec) : 750=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=5.56%, ctx=97, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179217: Thu Sep 10 04:29:04 2026 read: IOPS=0, BW=745KiB/s (763kB/s)(5120KiB/6871msec) clat (usec): min=743, max=196411, avg=72173.51, stdev=98143.86 lat (usec): min=744, max=196413, avg=72174.67, stdev=98144.00 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 742], 10.00th=[ 742], 20.00th=[ 742], | 30.00th=[ 1139], 40.00th=[ 1139], 50.00th=[ 1352], 60.00th=[ 1352], | 70.00th=[160433], 80.00th=[160433], 90.00th=[196084], 95.00th=[196084], | 99.00th=[196084], 99.50th=[196084], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 2048, max= 6083, per=100.00%, avg=4065.50, stdev=2853.18, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1043KiB/s (1068kB/s)(7168KiB/6871msec); 0 zone resets clat (msec): min=141, max=4736, avg=925.94, stdev=1685.74 lat (msec): min=141, max=4736, avg=926.04, stdev=1685.74 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 224], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 255], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 575], 90.00th=[ 4732], 95.00th=[ 4732], | 99.00th=[ 4732], 99.50th=[ 4732], 99.90th=[ 4732], 99.95th=[ 4732], | 99.99th=[ 4732] bw ( KiB/s): min= 1484, max= 4096, per=68.76%, avg=2326.80, stdev=1015.81, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (usec) : 750=8.33% lat (msec) : 2=16.67%, 250=41.67%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.86%, ctx=211, 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=2418KiB/s (2476kB/s), 242KiB/s-999KiB/s (248kB/s-1023kB/s), io=20.0MiB (20.0MB), run=6689-8471msec WRITE: bw=3385KiB/s (3466kB/s), 713KiB/s-1209KiB/s (730kB/s-1238kB/s), io=28.0MiB (29.4MB), run=6689-8471msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179219: Thu Sep 10 04:29:05 2026 read: IOPS=0, BW=811KiB/s (831kB/s)(7168KiB/8834msec) clat (msec): min=79, max=3865, avg=1085.88, stdev=1386.58 lat (msec): min=79, max=3865, avg=1085.88, stdev=1386.58 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 128], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 558], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 1938], 90.00th=[ 3876], 95.00th=[ 3876], | 99.00th=[ 3876], 99.50th=[ 3876], 99.90th=[ 3876], 99.95th=[ 3876], | 99.99th=[ 3876] bw ( KiB/s): min= 2011, max= 3961, per=100.00%, avg=2408.20, stdev=868.09, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=580KiB/s (593kB/s)(5120KiB/8834msec); 0 zone resets clat (msec): min=111, max=503, avg=245.34, stdev=152.75 lat (msec): min=111, max=503, avg=245.73, stdev=152.55 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 209], 60.00th=[ 209], | 70.00th=[ 243], 80.00th=[ 243], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 1980, max= 6083, per=100.00%, avg=3356.67, stdev=2361.11, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 750=16.67%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.53%, ctx=68, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179220: Thu Sep 10 04:29:05 2026 read: IOPS=0, BW=236KiB/s (241kB/s)(2048KiB/8693msec) clat (msec): min=119, max=447, avg=283.62, stdev=232.02 lat (msec): min=119, max=447, avg=283.62, stdev=232.02 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 121], 50.00th=[ 121], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 447], 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= 1924, max= 2015, per=88.92%, avg=1969.50, stdev=64.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1178KiB/s (1206kB/s)(10.0MiB/8693msec); 0 zone resets clat (msec): min=61, max=4477, avg=806.07, stdev=1314.14 lat (msec): min=61, max=4477, avg=806.20, stdev=1314.15 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 136], | 30.00th=[ 167], 40.00th=[ 247], 50.00th=[ 409], 60.00th=[ 468], | 70.00th=[ 584], 80.00th=[ 684], 90.00th=[ 827], 95.00th=[ 4463], | 99.00th=[ 4463], 99.50th=[ 4463], 99.90th=[ 4463], 99.95th=[ 4463], | 99.99th=[ 4463] bw ( KiB/s): min= 1980, max= 6083, per=83.64%, avg=2594.57, stdev=1538.36, samples=7 iops : min= 1, max= 5, avg= 1.57, stdev= 1.51, samples=7 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=2.78%, ctx=96, 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=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=179221: Thu Sep 10 04:29:05 2026 read: IOPS=0, BW=748KiB/s (766kB/s)(6144KiB/8217msec) clat (msec): min=137, max=560, avg=293.44, stdev=161.56 lat (msec): min=137, max=560, avg=293.44, stdev=161.56 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 296], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1980, max= 4023, per=100.00%, avg=2506.25, stdev=1011.28, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=748KiB/s (766kB/s)(6144KiB/8217msec); 0 zone resets clat (msec): min=147, max=4569, avg=1075.60, stdev=1725.60 lat (msec): min=147, max=4569, avg=1075.71, stdev=1725.60 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 401], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 4597], 95.00th=[ 4597], | 99.00th=[ 4597], 99.50th=[ 4597], 99.90th=[ 4597], 99.95th=[ 4597], | 99.99th=[ 4597] bw ( KiB/s): min= 1980, max= 2043, per=65.14%, avg=2020.50, stdev=24.01, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.37%, ctx=58, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179222: Thu Sep 10 04:29:05 2026 read: IOPS=0, BW=554KiB/s (567kB/s)(5120KiB/9242msec) clat (msec): min=154, max=792, avg=475.34, stdev=238.40 lat (msec): min=154, max=792, avg=475.35, stdev=238.40 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1980, max= 4015, per=100.00%, avg=2674.00, stdev=1161.58, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=776KiB/s (794kB/s)(7168KiB/9242msec); 0 zone resets clat (msec): min=176, max=4644, avg=973.01, stdev=1630.03 lat (msec): min=176, max=4645, avg=973.13, stdev=1630.07 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 251], | 30.00th=[ 266], 40.00th=[ 266], 50.00th=[ 330], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 751], 90.00th=[ 4665], 95.00th=[ 4665], | 99.00th=[ 4665], 99.50th=[ 4665], 99.90th=[ 4665], 99.95th=[ 4665], | 99.99th=[ 4665] bw ( KiB/s): min= 1996, max= 6144, per=100.00%, avg=3549.50, stdev=1971.69, samples=4 iops : min= 1, max= 6, avg= 2.75, stdev= 2.36, samples=4 lat (msec) : 250=16.67%, 500=50.00%, 750=8.33%, 1000=16.67%, >=2000=8.33% cpu : usr=0.03%, sys=2.49%, ctx=104, 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=2216KiB/s (2269kB/s), 236KiB/s-811KiB/s (241kB/s-831kB/s), io=20.0MiB (20.0MB), run=8217-9242msec WRITE: bw=3102KiB/s (3177kB/s), 580KiB/s-1178KiB/s (593kB/s-1206kB/s), io=28.0MiB (29.4MB), run=8217-9242msec 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=179230: Thu Sep 10 04:29:21 2026 read: IOPS=1, BW=7144KiB/s (7316kB/s)(12.0MiB/1720msec) clat (msec): min=230, max=905, avg=529.95, stdev=343.82 lat (msec): min=230, max=905, avg=529.96, stdev=343.82 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 6725, max= 8192, per=100.00%, avg=7458.50, stdev=1037.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.17%, sys=8.73%, ctx=62, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179231: Thu Sep 10 04:29:21 2026 read: IOPS=0, BW=1117KiB/s (1143kB/s)(4096KiB/3668msec) clat (nsec): min=1464.6M, max=1464.6M, avg=1464617220.00, stdev= 0.00 lat (nsec): min=1464.6M, max=1464.6M, avg=1464619410.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1469], 5.00th=[ 1469], 10.00th=[ 1469], 20.00th=[ 1469], | 30.00th=[ 1469], 40.00th=[ 1469], 50.00th=[ 1469], 60.00th=[ 1469], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7984, max= 7984, per=100.00%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2233KiB/s (2287kB/s)(8192KiB/3668msec); 0 zone resets clat (msec): min=381, max=1781, avg=1081.69, stdev=990.15 lat (msec): min=382, max=1786, avg=1084.54, stdev=993.30 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 1787], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.29%, ctx=39, 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=179232: Thu Sep 10 04:29:21 2026 write: IOPS=0, BW=3574KiB/s (3660kB/s)(12.0MiB/3438msec); 0 zone resets clat (msec): min=520, max=1907, avg=1129.50, stdev=709.10 lat (msec): min=520, max=1908, avg=1129.99, stdev=709.02 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 8000, max= 8192, per=90.63%, avg=8096.00, stdev=135.76, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.61%, ctx=53, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179233: Thu Sep 10 04:29:21 2026 write: IOPS=1, BW=5001KiB/s (5121kB/s)(12.0MiB/2457msec); 0 zone resets clat (msec): min=377, max=1240, avg=793.68, stdev=432.17 lat (msec): min=377, max=1240, avg=794.44, stdev=432.19 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 5752, max= 8143, per=77.77%, avg=6947.50, stdev=1690.69, 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=0.04%, sys=5.17%, ctx=43, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4467KiB/s (4574kB/s), 1117KiB/s-7144KiB/s (1143kB/s-7316kB/s), io=16.0MiB (16.8MB), run=1720-3668msec WRITE: bw=8933KiB/s (9148kB/s), 2233KiB/s-5001KiB/s (2287kB/s-5121kB/s), io=32.0MiB (33.6MB), run=2457-3668msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179235: Thu Sep 10 04:29:21 2026 read: IOPS=1, BW=4776KiB/s (4890kB/s)(12.0MiB/2573msec) clat (msec): min=844, max=864, avg=857.39, stdev=11.05 lat (msec): min=844, max=864, avg=857.39, stdev=11.05 clat percentiles (msec): | 1.00th=[ 844], 5.00th=[ 844], 10.00th=[ 844], 20.00th=[ 844], | 30.00th=[ 844], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8000, max= 8192, per=100.00%, avg=8096.00, stdev=135.76, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=16.49%, ctx=387, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179236: Thu Sep 10 04:29:21 2026 read: IOPS=0, BW=1899KiB/s (1945kB/s)(4096KiB/2157msec) clat (nsec): min=686272k, max=686272k, avg=686272404.00, stdev= 0.00 lat (nsec): min=686275k, max=686275k, avg=686274881.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3798KiB/s (3889kB/s)(8192KiB/2157msec); 0 zone resets clat (msec): min=314, max=1092, avg=703.63, stdev=549.70 lat (msec): min=315, max=1092, avg=703.97, stdev=549.84 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=[ 1099], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.45%, ctx=64, 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=179237: Thu Sep 10 04:29:21 2026 write: IOPS=0, BW=3983KiB/s (4079kB/s)(12.0MiB/3085msec); 0 zone resets clat (msec): min=422, max=2174, avg=1026.50, stdev=994.83 lat (msec): min=424, max=2175, avg=1027.54, stdev=994.40 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8078, max= 8143, per=76.36%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=5.16%, ctx=51, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179238: Thu Sep 10 04:29:21 2026 write: IOPS=1, BW=5099KiB/s (5221kB/s)(12.0MiB/2410msec); 0 zone resets clat (msec): min=476, max=1281, avg=798.86, stdev=425.56 lat (msec): min=478, max=1281, avg=802.79, stdev=423.46 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8000, max= 8192, per=76.23%, avg=8096.00, stdev=135.76, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.19%, 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 Run status group 0 (all jobs): READ: bw=6368KiB/s (6520kB/s), 1899KiB/s-4776KiB/s (1945kB/s-4890kB/s), io=16.0MiB (16.8MB), run=2157-2573msec WRITE: bw=10.4MiB/s (10.9MB/s), 3798KiB/s-5099KiB/s (3889kB/s-5221kB/s), io=32.0MiB (33.6MB), run=2157-3085msec