== sanity test 398b: DIO and buffer IO race ============== 08:49:41 (1786193381) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.16964 s, 15.9 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=146790: Sat Aug 8 08:50:46 2026 read: IOPS=26, BW=108KiB/s (110kB/s)(5992KiB/55589msec) clat (usec): min=35, max=708424, avg=18849.26, stdev=21620.98 lat (usec): min=36, max=708424, avg=18850.60, stdev=21621.24 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 125], 10.00th=[ 7308], 20.00th=[ 9634], | 30.00th=[ 11600], 40.00th=[ 13960], 50.00th=[ 16581], 60.00th=[ 19006], | 70.00th=[ 22152], 80.00th=[ 26346], 90.00th=[ 32113], 95.00th=[ 39060], | 99.00th=[ 63701], 99.50th=[ 78119], 99.90th=[132645], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 6, max= 222, per=24.86%, avg=107.14, stdev=33.77, samples=110 iops : min= 1, max= 55, avg=26.40, stdev= 8.47, samples=110 write: IOPS=28, BW=113KiB/s (116kB/s)(6296KiB/55589msec); 0 zone resets clat (usec): min=831, max=110174, avg=17179.43, stdev=14767.28 lat (usec): min=831, max=110176, avg=17180.56, stdev=14767.32 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2089], 10.00th=[ 2737], 20.00th=[ 3982], | 30.00th=[ 6783], 40.00th=[ 10683], 50.00th=[ 14091], 60.00th=[ 17433], | 70.00th=[ 21627], 80.00th=[ 27132], 90.00th=[ 36963], 95.00th=[ 43779], | 99.00th=[ 65799], 99.50th=[ 85459], 99.90th=[106431], 99.95th=[110625], | 99.99th=[110625] bw ( KiB/s): min= 39, max= 214, per=25.10%, avg=113.43, stdev=33.49, samples=109 iops : min= 9, max= 53, avg=27.97, stdev= 8.39, samples=109 lat (usec) : 50=0.16%, 100=1.14%, 250=2.15%, 500=0.03%, 1000=0.36% lat (msec) : 2=1.82%, 4=8.24%, 10=16.11%, 20=34.96%, 50=32.68% lat (msec) : 100=2.15%, 250=0.16%, 750=0.03% cpu : usr=0.12%, sys=23.20%, ctx=8412, 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=146791: Sat Aug 8 08:50:46 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(5940KiB/53842msec) clat (usec): min=33, max=189395, avg=18058.16, stdev=13110.32 lat (usec): min=33, max=189395, avg=18058.98, stdev=13110.35 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 119], 10.00th=[ 6783], 20.00th=[ 9503], | 30.00th=[ 11469], 40.00th=[ 13304], 50.00th=[ 15795], 60.00th=[ 18482], | 70.00th=[ 21627], 80.00th=[ 25297], 90.00th=[ 31851], 95.00th=[ 39060], | 99.00th=[ 60031], 99.50th=[ 78119], 99.90th=[147850], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 6, max= 192, per=25.58%, avg=110.24, stdev=34.03, samples=107 iops : min= 1, max= 48, avg=27.18, stdev= 8.51, samples=107 write: IOPS=29, BW=118KiB/s (121kB/s)(6348KiB/53842msec); 0 zone resets clat (usec): min=760, max=714771, avg=16837.40, stdev=22377.29 lat (usec): min=760, max=714772, avg=16838.66, stdev=22377.48 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 2343], 10.00th=[ 2868], 20.00th=[ 4080], | 30.00th=[ 6128], 40.00th=[ 9765], 50.00th=[ 13304], 60.00th=[ 17433], | 70.00th=[ 21103], 80.00th=[ 26608], 90.00th=[ 34866], 95.00th=[ 43254], | 99.00th=[ 60031], 99.50th=[ 70779], 99.90th=[137364], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 32, max= 200, per=26.25%, avg=118.63, stdev=34.61, samples=106 iops : min= 8, max= 50, avg=29.27, stdev= 8.66, samples=106 lat (usec) : 50=0.26%, 100=1.43%, 250=1.99%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=1.89%, 4=8.11%, 10=17.77%, 20=34.80%, 50=31.15% lat (msec) : 100=2.08%, 250=0.20%, 750=0.03% cpu : usr=0.13%, sys=23.97%, ctx=8249, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146792: Sat Aug 8 08:50:46 2026 read: IOPS=27, BW=110KiB/s (113kB/s)(6028KiB/54690msec) clat (usec): min=39, max=707843, avg=18689.13, stdev=21192.03 lat (usec): min=39, max=707844, avg=18692.28, stdev=21192.74 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 129], 10.00th=[ 7832], 20.00th=[ 10159], | 30.00th=[ 11731], 40.00th=[ 13566], 50.00th=[ 16057], 60.00th=[ 18744], | 70.00th=[ 21627], 80.00th=[ 25560], 90.00th=[ 32637], 95.00th=[ 38536], | 99.00th=[ 58459], 99.50th=[ 66847], 99.90th=[110625], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 6, max= 199, per=25.51%, avg=109.94, stdev=34.78, samples=108 iops : min= 1, max= 49, avg=27.10, stdev= 8.69, samples=108 write: IOPS=28, BW=114KiB/s (117kB/s)(6260KiB/54690msec); 0 zone resets clat (usec): min=886, max=169544, avg=16758.29, stdev=14498.99 lat (usec): min=887, max=169546, avg=16759.40, stdev=14499.02 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2089], 10.00th=[ 2769], 20.00th=[ 3949], | 30.00th=[ 6325], 40.00th=[ 10421], 50.00th=[ 13435], 60.00th=[ 17171], | 70.00th=[ 22152], 80.00th=[ 27132], 90.00th=[ 34866], 95.00th=[ 42730], | 99.00th=[ 60556], 99.50th=[ 69731], 99.90th=[108528], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 20, max= 192, per=25.19%, avg=113.86, stdev=32.30, samples=108 iops : min= 5, max= 48, avg=28.08, stdev= 8.11, samples=108 lat (usec) : 50=0.33%, 100=1.14%, 250=1.40%, 500=0.23%, 1000=0.23% lat (msec) : 2=2.25%, 4=8.04%, 10=15.69%, 20=36.17%, 50=32.36% lat (msec) : 100=1.99%, 250=0.16%, 750=0.03% cpu : usr=0.11%, sys=24.06%, ctx=8328, 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=146793: Sat Aug 8 08:50:46 2026 read: IOPS=27, BW=109KiB/s (112kB/s)(6052KiB/55525msec) clat (usec): min=32, max=173130, avg=18293.38, stdev=12859.33 lat (usec): min=33, max=173132, avg=18294.20, stdev=12859.37 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 125], 10.00th=[ 7111], 20.00th=[ 10028], | 30.00th=[ 11600], 40.00th=[ 13698], 50.00th=[ 16188], 60.00th=[ 18744], | 70.00th=[ 22152], 80.00th=[ 25560], 90.00th=[ 32113], 95.00th=[ 38011], | 99.00th=[ 58983], 99.50th=[ 76022], 99.90th=[149947], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 47, max= 200, per=25.56%, avg=110.18, stdev=30.39, samples=108 iops : min= 11, max= 50, avg=27.17, stdev= 7.63, samples=108 write: IOPS=28, BW=112KiB/s (115kB/s)(6236KiB/55525msec); 0 zone resets clat (usec): min=677, max=757887, avg=17669.23, stdev=23704.41 lat (usec): min=677, max=757889, avg=17671.15, stdev=23704.13 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1909], 10.00th=[ 2769], 20.00th=[ 3982], | 30.00th=[ 6456], 40.00th=[ 10683], 50.00th=[ 14353], 60.00th=[ 17957], | 70.00th=[ 22414], 80.00th=[ 27132], 90.00th=[ 36439], 95.00th=[ 44303], | 99.00th=[ 64226], 99.50th=[ 78119], 99.90th=[109577], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 23, max= 215, per=24.96%, avg=112.83, stdev=33.32, samples=109 iops : min= 5, max= 53, avg=27.83, stdev= 8.33, samples=109 lat (usec) : 50=0.33%, 100=1.30%, 250=1.92%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=2.38%, 4=7.58%, 10=15.30%, 20=35.16%, 50=32.94% lat (msec) : 100=2.41%, 250=0.13%, 1000=0.03% cpu : usr=0.12%, sys=23.67%, ctx=8200, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=432KiB/s (442kB/s), 108KiB/s-110KiB/s (110kB/s-113kB/s), io=23.4MiB (24.6MB), run=53842-55589msec WRITE: bw=452KiB/s (463kB/s), 112KiB/s-118KiB/s (115kB/s-121kB/s), io=24.6MiB (25.7MB), run=53842-55589msec fio: pid=146797, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=146795: Sat Aug 8 08:51:15 2026 read: IOPS=17, BW=71.2KiB/s (72.9kB/s)(5992KiB/84141msec) clat (msec): min=2, max=726, avg=15.81, stdev=23.47 lat (msec): min=2, max=726, avg=15.81, stdev=23.47 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 37], 95.00th=[ 47], | 99.00th=[ 68], 99.50th=[ 79], 99.90th=[ 127], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 15, max= 214, per=28.23%, avg=71.41, stdev=44.54, samples=166 iops : min= 3, max= 53, avg=17.49, stdev=11.24, samples=166 write: IOPS=18, BW=74.8KiB/s (76.6kB/s)(6296KiB/84141msec); 0 zone resets clat (msec): min=12, max=179, avg=38.28, stdev=20.86 lat (msec): min=12, max=179, avg=38.28, stdev=20.86 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 55], 90.00th=[ 68], 95.00th=[ 79], | 99.00th=[ 106], 99.50th=[ 118], 99.90th=[ 155], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 15, max= 160, per=28.40%, avg=74.98, stdev=39.36, samples=166 iops : min= 3, max= 40, avg=18.38, stdev= 9.98, samples=166 lat (msec) : 4=2.02%, 10=23.83%, 20=17.64%, 50=42.45%, 100=13.12% lat (msec) : 250=0.91%, 750=0.03% cpu : usr=0.07%, sys=7.76%, ctx=5973, 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=146796: Sat Aug 8 08:51:15 2026 read: IOPS=17, BW=70.5KiB/s (72.2kB/s)(5940KiB/84254msec) clat (msec): min=2, max=719, avg=15.96, stdev=24.21 lat (msec): min=2, max=719, avg=15.96, stdev=24.21 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 36], 95.00th=[ 48], | 99.00th=[ 78], 99.50th=[ 106], 99.90th=[ 138], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 223, per=27.92%, avg=70.64, stdev=46.70, samples=166 iops : min= 1, max= 55, avg=17.30, stdev=11.77, samples=166 write: IOPS=18, BW=75.3KiB/s (77.2kB/s)(6348KiB/84254msec); 0 zone resets clat (msec): min=12, max=193, avg=38.02, stdev=20.75 lat (msec): min=12, max=193, avg=38.02, stdev=20.75 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 54], 90.00th=[ 68], 95.00th=[ 78], | 99.00th=[ 104], 99.50th=[ 122], 99.90th=[ 165], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 23, max= 168, per=28.53%, avg=75.31, stdev=39.28, samples=166 iops : min= 5, max= 42, avg=18.46, stdev= 9.95, samples=166 lat (msec) : 4=2.41%, 10=23.57%, 20=18.23%, 50=41.73%, 100=13.12% lat (msec) : 250=0.91%, 750=0.03% cpu : usr=0.09%, sys=7.65%, ctx=5954, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=146797: Sat Aug 8 08:51:15 2026 read: IOPS=13, BW=53.8KiB/s (55.1kB/s)(3396KiB/63092msec) clat (msec): min=3, max=133, avg=22.67, stdev=18.04 lat (msec): min=3, max=133, avg=22.67, stdev=18.04 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 47], 95.00th=[ 57], | 99.00th=[ 90], 99.50th=[ 102], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 7, max= 176, per=21.54%, avg=54.49, stdev=28.89, samples=123 iops : min= 1, max= 44, avg=13.19, stdev= 7.30, samples=123 write: IOPS=13, BW=54.6KiB/s (55.9kB/s)(3444KiB/63092msec); 0 zone resets clat (msec): min=16, max=733, avg=50.69, stdev=31.99 lat (msec): min=16, max=733, avg=50.69, stdev=31.99 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 47], 60.00th=[ 52], | 70.00th=[ 57], 80.00th=[ 66], 90.00th=[ 77], 95.00th=[ 88], | 99.00th=[ 123], 99.50th=[ 150], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 15, max= 127, per=20.65%, avg=54.51, stdev=22.70, samples=124 iops : min= 3, max= 31, avg=13.19, stdev= 5.70, samples=124 lat (msec) : 4=0.58%, 10=10.70%, 20=18.12%, 50=44.83%, 100=23.73% lat (msec) : 250=1.93%, 750=0.06% cpu : usr=0.04%, sys=7.60%, ctx=3102, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=850,861,0,0 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=146798: Sat Aug 8 08:51:15 2026 read: IOPS=17, BW=71.9KiB/s (73.7kB/s)(6052KiB/84118msec) clat (msec): min=2, max=138, avg=15.32, stdev=15.15 lat (msec): min=2, max=138, avg=15.32, stdev=15.15 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 35], 95.00th=[ 45], | 99.00th=[ 77], 99.50th=[ 89], 99.90th=[ 107], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 7, max= 223, per=28.88%, avg=73.07, stdev=43.85, samples=164 iops : min= 1, max= 55, avg=17.91, stdev=11.08, samples=164 write: IOPS=18, BW=74.1KiB/s (75.9kB/s)(6236KiB/84118msec); 0 zone resets clat (msec): min=13, max=746, avg=38.96, stdev=28.17 lat (msec): min=13, max=746, avg=38.96, stdev=28.17 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 44], 80.00th=[ 55], 90.00th=[ 69], 95.00th=[ 81], | 99.00th=[ 107], 99.50th=[ 131], 99.90th=[ 211], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 23, max= 168, per=28.16%, avg=74.36, stdev=39.21, samples=166 iops : min= 5, max= 42, avg=18.22, stdev= 9.93, samples=166 lat (msec) : 4=2.18%, 10=23.76%, 20=18.59%, 50=41.99%, 100=12.63% lat (msec) : 250=0.81%, 750=0.03% cpu : usr=0.09%, sys=7.73%, ctx=5956, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=254KiB/s (260kB/s), 53.8KiB/s-71.9KiB/s (55.1kB/s-73.7kB/s), io=20.9MiB (21.9MB), run=63092-84254msec WRITE: bw=265KiB/s (271kB/s), 54.6KiB/s-75.3KiB/s (55.9kB/s-77.2kB/s), io=21.8MiB (22.9MB), run=63092-84254msec 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=146825: Sat Aug 8 08:51:35 2026 read: IOPS=24, BW=392KiB/s (401kB/s)(5920KiB/15105msec) clat (usec): min=47, max=119909, avg=21198.78, stdev=14906.75 lat (usec): min=48, max=119910, avg=21199.62, stdev=14906.77 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 114], 10.00th=[ 262], 20.00th=[ 11076], | 30.00th=[ 14091], 40.00th=[ 17171], 50.00th=[ 19268], 60.00th=[ 22152], | 70.00th=[ 25560], 80.00th=[ 29754], 90.00th=[ 36963], 95.00th=[ 43779], | 99.00th=[ 77071], 99.50th=[107480], 99.90th=[120062], 99.95th=[120062], | 99.99th=[120062] bw ( KiB/s): min= 159, max= 608, per=23.98%, avg=380.10, stdev=111.31, samples=29 iops : min= 9, max= 38, avg=23.07, stdev= 7.01, samples=29 write: IOPS=26, BW=422KiB/s (432kB/s)(6368KiB/15105msec); 0 zone resets clat (usec): min=1419, max=97751, avg=18120.29, stdev=13213.97 lat (usec): min=1420, max=97752, avg=18122.15, stdev=13213.94 clat percentiles (usec): | 1.00th=[ 2089], 5.00th=[ 3589], 10.00th=[ 4424], 20.00th=[ 6783], | 30.00th=[10028], 40.00th=[13042], 50.00th=[15664], 60.00th=[18220], | 70.00th=[22676], 80.00th=[26870], 90.00th=[33817], 95.00th=[43254], | 99.00th=[64226], 99.50th=[90702], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 159, max= 608, per=24.48%, avg=408.28, stdev=98.39, samples=29 iops : min= 9, max= 38, avg=24.86, stdev= 6.26, samples=29 lat (usec) : 50=0.13%, 100=1.69%, 250=2.60%, 500=0.78%, 750=0.26% lat (msec) : 2=0.39%, 4=3.39%, 10=14.06%, 20=35.68%, 50=37.89% lat (msec) : 100=2.86%, 250=0.26% cpu : usr=0.07%, sys=28.67%, ctx=2566, 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=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=146826: Sat Aug 8 08:51:35 2026 read: IOPS=24, BW=386KiB/s (396kB/s)(5744KiB/14866msec) clat (usec): min=56, max=93835, avg=21181.90, stdev=14131.14 lat (usec): min=56, max=93836, avg=21182.83, stdev=14131.18 clat percentiles (usec): | 1.00th=[ 76], 5.00th=[ 109], 10.00th=[ 506], 20.00th=[11731], | 30.00th=[14091], 40.00th=[16450], 50.00th=[18744], 60.00th=[21103], | 70.00th=[24773], 80.00th=[28705], 90.00th=[40633], 95.00th=[49021], | 99.00th=[65274], 99.50th=[76022], 99.90th=[93848], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 191, max= 637, per=24.35%, avg=386.00, stdev=114.39, samples=29 iops : min= 11, max= 39, avg=23.45, stdev= 7.29, samples=29 write: IOPS=27, BW=440KiB/s (451kB/s)(6544KiB/14866msec); 0 zone resets clat (usec): min=1399, max=73962, avg=17572.63, stdev=12904.28 lat (usec): min=1400, max=73963, avg=17574.51, stdev=12904.45 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 3556], 10.00th=[ 4146], 20.00th=[ 6390], | 30.00th=[ 8586], 40.00th=[11207], 50.00th=[15008], 60.00th=[18482], | 70.00th=[21627], 80.00th=[25822], 90.00th=[35914], 95.00th=[41681], | 99.00th=[62653], 99.50th=[64226], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 255, max= 672, per=26.33%, avg=439.21, stdev=112.74, samples=29 iops : min= 15, max= 42, avg=26.79, stdev= 7.03, samples=29 lat (usec) : 100=1.43%, 250=2.99%, 500=0.13%, 750=0.13% lat (msec) : 2=0.65%, 4=3.78%, 10=15.76%, 20=34.90%, 50=36.59% lat (msec) : 100=3.65% cpu : usr=0.17%, sys=28.66%, ctx=2497, 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=146827: Sat Aug 8 08:51:35 2026 read: IOPS=26, BW=417KiB/s (427kB/s)(6256KiB/15018msec) clat (usec): min=40, max=105145, avg=20775.25, stdev=14369.75 lat (usec): min=41, max=105147, avg=20776.36, stdev=14369.89 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 109], 10.00th=[ 188], 20.00th=[ 11207], | 30.00th=[ 13960], 40.00th=[ 16319], 50.00th=[ 19268], 60.00th=[ 21627], | 70.00th=[ 24773], 80.00th=[ 28443], 90.00th=[ 35914], 95.00th=[ 47449], | 99.00th=[ 73925], 99.50th=[ 80217], 99.90th=[105382], 99.95th=[105382], | 99.99th=[105382] bw ( KiB/s): min= 224, max= 763, per=26.30%, avg=416.83, stdev=132.25, samples=29 iops : min= 14, max= 47, avg=25.38, stdev= 8.29, samples=29 write: IOPS=25, BW=402KiB/s (411kB/s)(6032KiB/15018msec); 0 zone resets clat (usec): min=1490, max=71945, avg=18076.17, stdev=13075.66 lat (usec): min=1491, max=71946, avg=18078.01, stdev=13075.98 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 3195], 10.00th=[ 4424], 20.00th=[ 6587], | 30.00th=[ 8586], 40.00th=[11338], 50.00th=[14353], 60.00th=[18482], | 70.00th=[24249], 80.00th=[29492], 90.00th=[38011], 95.00th=[43254], | 99.00th=[54789], 99.50th=[65799], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 223, max= 638, per=23.67%, avg=394.83, stdev=126.07, samples=29 iops : min= 13, max= 39, avg=24.00, stdev= 7.90, samples=29 lat (usec) : 50=0.26%, 100=1.43%, 250=4.04%, 500=0.26% lat (msec) : 2=0.91%, 4=2.47%, 10=16.02%, 20=32.81%, 50=38.93% lat (msec) : 100=2.73%, 250=0.13% cpu : usr=0.12%, sys=27.71%, ctx=2396, 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=146828: Sat Aug 8 08:51:35 2026 read: IOPS=26, BW=421KiB/s (431kB/s)(6032KiB/14344msec) clat (usec): min=33, max=84158, avg=19827.40, stdev=14011.92 lat (usec): min=33, max=84159, avg=19828.43, stdev=14012.05 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 102], 10.00th=[ 157], 20.00th=[10028], | 30.00th=[12518], 40.00th=[15139], 50.00th=[18220], 60.00th=[21103], | 70.00th=[24773], 80.00th=[28705], 90.00th=[36963], 95.00th=[46400], | 99.00th=[60556], 99.50th=[78119], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 192, max= 672, per=26.42%, avg=418.82, stdev=118.15, samples=28 iops : min= 12, max= 42, avg=25.50, stdev= 7.36, samples=28 write: IOPS=27, BW=436KiB/s (447kB/s)(6256KiB/14344msec); 0 zone resets clat (usec): min=1140, max=88634, avg=17505.68, stdev=13108.90 lat (usec): min=1141, max=88636, avg=17509.24, stdev=13108.47 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 3392], 10.00th=[ 4621], 20.00th=[ 6325], | 30.00th=[ 8979], 40.00th=[11469], 50.00th=[14353], 60.00th=[17695], | 70.00th=[21103], 80.00th=[26084], 90.00th=[34866], 95.00th=[42206], | 99.00th=[61080], 99.50th=[63177], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 254, max= 764, per=26.18%, avg=436.64, stdev=130.50, samples=28 iops : min= 15, max= 47, avg=26.64, stdev= 8.25, samples=28 lat (usec) : 50=0.13%, 100=1.82%, 250=4.17%, 500=0.39%, 750=0.26% lat (msec) : 2=1.17%, 4=2.34%, 10=16.93%, 20=33.59%, 50=35.55% lat (msec) : 100=3.65% cpu : usr=0.15%, sys=28.09%, ctx=2444, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1586KiB/s (1624kB/s), 386KiB/s-421KiB/s (396kB/s-431kB/s), io=23.4MiB (24.5MB), run=14344-15105msec WRITE: bw=1668KiB/s (1708kB/s), 402KiB/s-440KiB/s (411kB/s-451kB/s), io=24.6MiB (25.8MB), run=14344-15105msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146830: Sat Aug 8 08:51:43 2026 read: IOPS=16, BW=260KiB/s (266kB/s)(5920KiB/22806msec) clat (msec): min=4, max=120, avg=17.74, stdev=15.81 lat (msec): min=4, max=120, avg=17.74, stdev=15.81 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 16], | 70.00th=[ 19], 80.00th=[ 26], 90.00th=[ 36], 95.00th=[ 52], | 99.00th=[ 80], 99.50th=[ 93], 99.90th=[ 121], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 96, max= 576, per=24.36%, avg=255.80, stdev=125.22, samples=45 iops : min= 6, max= 36, avg=15.67, stdev= 7.95, samples=45 write: IOPS=17, BW=279KiB/s (286kB/s)(6368KiB/22806msec); 0 zone resets clat (msec): min=14, max=153, avg=40.61, stdev=20.03 lat (msec): min=14, max=153, avg=40.61, stdev=20.03 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 32], 50.00th=[ 35], 60.00th=[ 39], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 69], 95.00th=[ 85], | 99.00th=[ 115], 99.50th=[ 131], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 95, max= 576, per=25.10%, avg=277.16, stdev=118.67, samples=45 iops : min= 5, max= 36, avg=17.02, stdev= 7.48, samples=45 lat (msec) : 10=19.79%, 20=16.02%, 50=50.78%, 100=12.37%, 250=1.04% cpu : usr=0.12%, sys=9.70%, ctx=1676, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146831: Sat Aug 8 08:51:43 2026 read: IOPS=15, BW=252KiB/s (258kB/s)(5744KiB/22763msec) clat (usec): min=4005, max=94683, avg=17144.16, stdev=15446.71 lat (usec): min=4006, max=94684, avg=17145.34, stdev=15446.70 clat percentiles (usec): | 1.00th=[ 4178], 5.00th=[ 5014], 10.00th=[ 5538], 20.00th=[ 6456], | 30.00th=[ 7898], 40.00th=[ 9634], 50.00th=[11338], 60.00th=[14091], | 70.00th=[17433], 80.00th=[23987], 90.00th=[37487], 95.00th=[49021], | 99.00th=[79168], 99.50th=[81265], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 32, max= 672, per=24.46%, avg=256.86, stdev=143.88, samples=44 iops : min= 2, max= 42, avg=15.73, stdev= 9.08, samples=44 write: IOPS=17, BW=287KiB/s (294kB/s)(6544KiB/22763msec); 0 zone resets clat (msec): min=15, max=155, avg=40.44, stdev=20.04 lat (msec): min=15, max=155, avg=40.44, stdev=20.04 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 35], 60.00th=[ 39], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 65], 95.00th=[ 83], | 99.00th=[ 106], 99.50th=[ 138], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 95, max= 576, per=25.86%, avg=285.51, stdev=115.42, samples=45 iops : min= 5, max= 36, avg=17.53, stdev= 7.36, samples=45 lat (msec) : 10=20.44%, 20=16.41%, 50=49.22%, 100=12.76%, 250=1.17% cpu : usr=0.14%, sys=9.63%, ctx=1666, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146832: Sat Aug 8 08:51:43 2026 read: IOPS=17, BW=278KiB/s (284kB/s)(6256KiB/22521msec) clat (msec): min=3, max=102, avg=17.89, stdev=17.18 lat (msec): min=3, max=102, avg=17.89, stdev=17.18 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 15], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 39], 95.00th=[ 58], | 99.00th=[ 82], 99.50th=[ 100], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 95, max= 704, per=26.39%, avg=277.07, stdev=157.91, samples=44 iops : min= 5, max= 44, avg=17.00, stdev=10.01, samples=44 write: IOPS=16, BW=268KiB/s (274kB/s)(6032KiB/22521msec); 0 zone resets clat (msec): min=16, max=131, avg=40.96, stdev=18.52 lat (msec): min=16, max=131, avg=40.96, stdev=18.53 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 33], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 45], 80.00th=[ 54], 90.00th=[ 69], 95.00th=[ 82], | 99.00th=[ 101], 99.50th=[ 116], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 95, max= 480, per=23.77%, avg=262.45, stdev=107.24, samples=44 iops : min= 5, max= 30, avg=16.09, stdev= 6.78, samples=44 lat (msec) : 4=0.39%, 10=23.05%, 20=14.32%, 50=47.53%, 100=14.06% lat (msec) : 250=0.65% cpu : usr=0.08%, sys=9.75%, ctx=1676, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146833: Sat Aug 8 08:51:43 2026 read: IOPS=16, BW=265KiB/s (271kB/s)(6032KiB/22773msec) clat (msec): min=3, max=110, avg=18.72, stdev=17.84 lat (msec): min=3, max=110, avg=18.72, stdev=17.84 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 39], 95.00th=[ 57], | 99.00th=[ 89], 99.50th=[ 104], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 95, max= 640, per=24.92%, avg=261.62, stdev=123.44, samples=45 iops : min= 5, max= 40, avg=16.04, stdev= 7.82, samples=45 write: IOPS=17, BW=275KiB/s (281kB/s)(6256KiB/22773msec); 0 zone resets clat (msec): min=16, max=132, avg=39.99, stdev=19.00 lat (msec): min=16, max=132, avg=39.99, stdev=19.00 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 39], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 64], 95.00th=[ 79], | 99.00th=[ 122], 99.50th=[ 132], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 64, max= 544, per=24.78%, avg=273.56, stdev=122.44, samples=45 iops : min= 4, max= 34, avg=16.78, stdev= 7.74, samples=45 lat (msec) : 4=0.26%, 10=19.40%, 20=16.02%, 50=50.26%, 100=12.89% lat (msec) : 250=1.17% cpu : usr=0.12%, sys=9.72%, ctx=1661, 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=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=1050KiB/s (1075kB/s), 252KiB/s-278KiB/s (258kB/s-284kB/s), io=23.4MiB (24.5MB), run=22521-22806msec WRITE: bw=1105KiB/s (1131kB/s), 268KiB/s-287KiB/s (274kB/s-294kB/s), io=24.6MiB (25.8MB), run=22521-22806msec 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=146842: Sat Aug 8 08:51:54 2026 read: IOPS=1, BW=1901KiB/s (1947kB/s)(7168KiB/3770msec) clat (usec): min=743, max=284413, avg=153545.10, stdev=87224.54 lat (usec): min=744, max=284414, avg=153546.68, stdev=87224.82 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 742], 10.00th=[ 742], 20.00th=[117965], | 30.00th=[126354], 40.00th=[126354], 50.00th=[158335], 60.00th=[193987], | 70.00th=[193987], 80.00th=[193987], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 2035, max= 3953, per=61.63%, avg=2950.00, stdev=1051.89, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 write: IOPS=1, BW=1358KiB/s (1391kB/s)(5120KiB/3770msec); 0 zone resets clat (msec): min=362, max=623, avg=534.36, stdev=106.86 lat (msec): min=362, max=623, avg=534.42, stdev=106.86 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1822, max= 2048, per=29.23%, avg=1959.25, stdev=105.19, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=16.67%, 750=33.33% cpu : usr=0.00%, sys=42.16%, ctx=604, 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=146843: Sat Aug 8 08:51:54 2026 read: IOPS=0, BW=479KiB/s (490kB/s)(2048KiB/4278msec) clat (msec): min=200, max=289, avg=244.96, stdev=63.20 lat (msec): min=200, max=289, avg=244.96, stdev=63.20 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 1954, max= 2048, per=41.80%, avg=2001.00, stdev=66.47, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2394KiB/s (2451kB/s)(10.0MiB/4278msec); 0 zone resets clat (msec): min=125, max=1464, avg=368.79, stdev=403.52 lat (msec): min=125, max=1464, avg=368.87, stdev=403.52 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 178], | 30.00th=[ 182], 40.00th=[ 188], 50.00th=[ 194], 60.00th=[ 205], | 70.00th=[ 296], 80.00th=[ 300], 90.00th=[ 558], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 1822, max= 6035, per=52.48%, avg=3517.40, stdev=2127.47, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 2.05, samples=5 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=42.25%, ctx=460, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146844: Sat Aug 8 08:51:54 2026 read: IOPS=1, BW=1694KiB/s (1735kB/s)(6144KiB/3626msec) clat (usec): min=363, max=496680, avg=173516.45, stdev=213128.05 lat (usec): min=363, max=496682, avg=173517.71, stdev=213128.08 clat percentiles (usec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 807], 50.00th=[ 807], 60.00th=[187696], | 70.00th=[354419], 80.00th=[354419], 90.00th=[497026], 95.00th=[497026], | 99.00th=[497026], 99.50th=[497026], 99.90th=[497026], 99.95th=[497026], | 99.99th=[497026] bw ( KiB/s): min= 3764, max= 3864, per=79.67%, avg=3814.00, stdev=70.71, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1694KiB/s (1735kB/s)(6144KiB/3626msec); 0 zone resets clat (msec): min=166, max=998, avg=428.72, stdev=304.99 lat (msec): min=166, max=999, avg=428.80, stdev=304.97 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 443], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1822, max= 3849, per=35.81%, avg=2400.25, stdev=970.55, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 250=25.00%, 500=41.67%, 1000=8.33% cpu : usr=0.03%, sys=45.49%, ctx=551, 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=146845: Sat Aug 8 08:51:54 2026 read: IOPS=1, BW=1563KiB/s (1600kB/s)(5120KiB/3276msec) clat (usec): min=545, max=336708, avg=157398.27, stdev=143063.86 lat (usec): min=546, max=336709, avg=157399.72, stdev=143063.85 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 31065], 40.00th=[ 31065], 50.00th=[166724], 60.00th=[166724], | 70.00th=[252707], 80.00th=[252707], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2188KiB/s (2241kB/s)(7168KiB/3276msec); 0 zone resets clat (msec): min=175, max=656, avg=346.37, stdev=165.77 lat (msec): min=176, max=656, avg=346.50, stdev=165.71 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 203], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 363], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 414], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1924, max= 3764, per=39.69%, avg=2659.80, stdev=955.17, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 250=33.33%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=49.04%, ctx=255, 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=4787KiB/s (4902kB/s), 479KiB/s-1901KiB/s (490kB/s-1947kB/s), io=20.0MiB (20.0MB), run=3276-4278msec WRITE: bw=6702KiB/s (6863kB/s), 1358KiB/s-2394KiB/s (1391kB/s-2451kB/s), io=28.0MiB (29.4MB), run=3276-4278msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146846: Sat Aug 8 08:51:54 2026 read: IOPS=1, BW=1754KiB/s (1796kB/s)(7168KiB/4087msec) clat (msec): min=81, max=857, avg=389.33, stdev=309.34 lat (msec): min=81, max=857, avg=389.33, stdev=309.34 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 132], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 251], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 751], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1822, max= 4015, per=53.28%, avg=2427.00, stdev=1060.04, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1253KiB/s (1283kB/s)(5120KiB/4087msec); 0 zone resets clat (msec): min=148, max=467, avg=246.63, stdev=131.71 lat (msec): min=148, max=467, avg=246.71, stdev=131.71 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 266], 80.00th=[ 266], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1950, max= 4096, per=47.40%, avg=3023.00, stdev=1517.45, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=15.88%, ctx=241, 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=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=146847: Sat Aug 8 08:51:54 2026 read: IOPS=0, BW=456KiB/s (466kB/s)(2048KiB/4496msec) clat (msec): min=103, max=703, avg=403.14, stdev=424.16 lat (msec): min=103, max=703, avg=403.14, stdev=424.16 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 2048, max= 2048, per=44.96%, avg=2048.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2278KiB/s (2332kB/s)(10.0MiB/4496msec); 0 zone resets clat (msec): min=99, max=908, avg=366.47, stdev=277.87 lat (msec): min=99, max=908, avg=366.54, stdev=277.87 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 117], | 30.00th=[ 118], 40.00th=[ 165], 50.00th=[ 259], 60.00th=[ 271], | 70.00th=[ 489], 80.00th=[ 584], 90.00th=[ 651], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1822, max= 4023, per=42.96%, avg=2739.80, stdev=1099.69, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.04%, sys=15.73%, ctx=241, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146848: Sat Aug 8 08:51:54 2026 read: IOPS=1, BW=1373KiB/s (1406kB/s)(6144KiB/4474msec) clat (msec): min=47, max=903, avg=305.89, stdev=389.72 lat (msec): min=47, max=903, avg=305.89, stdev=389.72 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 59], | 30.00th=[ 59], 40.00th=[ 60], 50.00th=[ 60], 60.00th=[ 66], | 70.00th=[ 701], 80.00th=[ 701], 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= 2048, max= 4023, per=66.64%, avg=3035.50, stdev=1396.54, samples=2 iops : min= 2, max= 3, avg= 2.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1373KiB/s (1406kB/s)(6144KiB/4474msec); 0 zone resets clat (msec): min=70, max=1437, avg=424.22, stdev=538.71 lat (msec): min=70, max=1437, avg=424.31, stdev=538.71 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 99], | 30.00th=[ 99], 40.00th=[ 106], 50.00th=[ 106], 60.00th=[ 205], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 1928, max= 4096, per=42.00%, avg=2678.33, stdev=1228.44, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 50=8.33%, 100=41.67%, 250=16.67%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=9.05%, ctx=117, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146849: Sat Aug 8 08:51:54 2026 read: IOPS=1, BW=1152KiB/s (1180kB/s)(5120KiB/4445msec) clat (msec): min=66, max=563, avg=225.70, stdev=208.19 lat (msec): min=66, max=564, avg=225.70, stdev=208.19 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 67], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 114], 60.00th=[ 114], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 4023, max= 4096, per=89.12%, avg=4059.50, stdev=51.62, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1613KiB/s (1651kB/s)(7168KiB/4445msec); 0 zone resets clat (msec): min=61, max=1280, avg=457.96, stdev=422.54 lat (msec): min=61, max=1280, avg=458.03, stdev=422.54 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 80], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 347], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 617], 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= 1822, max= 2048, per=30.37%, avg=1937.00, stdev=92.73, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=33.33%, 250=16.67%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=15.66%, ctx=306, 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=4555KiB/s (4664kB/s), 456KiB/s-1754KiB/s (466kB/s-1796kB/s), io=20.0MiB (20.0MB), run=4087-4496msec WRITE: bw=6377KiB/s (6530kB/s), 1253KiB/s-2278KiB/s (1283kB/s-2332kB/s), io=28.0MiB (29.4MB), run=4087-4496msec 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=146855: Sat Aug 8 08:52:03 2026 read: IOPS=1, BW=7969KiB/s (8160kB/s)(12.0MiB/1542msec) clat (msec): min=392, max=627, avg=510.00, stdev=117.57 lat (msec): min=392, max=627, avg=510.00, stdev=117.57 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 7613, max= 8143, per=82.52%, avg=7878.00, stdev=374.77, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.06%, sys=44.26%, ctx=1880, 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=146856: Sat Aug 8 08:52:03 2026 read: IOPS=0, BW=2387KiB/s (2444kB/s)(4096KiB/1716msec) clat (nsec): min=382252k, max=382252k, avg=382252272.00, stdev= 0.00 lat (nsec): min=382253k, max=382253k, avg=382253074.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7907, max= 7907, per=82.82%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4774KiB/s (4888kB/s)(8192KiB/1716msec); 0 zone resets clat (msec): min=375, max=956, avg=665.87, stdev=410.79 lat (msec): min=375, max=956, avg=666.08, stdev=410.69 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 961], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8143, max= 8143, per=42.67%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=22.57%, ctx=847, 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=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=146857: Sat Aug 8 08:52:03 2026 write: IOPS=1, BW=7157KiB/s (7328kB/s)(12.0MiB/1717msec); 0 zone resets clat (msec): min=253, max=881, avg=571.39, stdev=314.20 lat (msec): min=253, max=882, avg=571.76, stdev=314.15 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7892, max= 8143, per=42.01%, avg=8017.50, stdev=177.48, 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=0.12%, sys=20.22%, ctx=63, 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=146858: Sat Aug 8 08:52:03 2026 write: IOPS=1, BW=7380KiB/s (7557kB/s)(12.0MiB/1665msec); 0 zone resets clat (msec): min=342, max=944, avg=553.93, stdev=338.71 lat (msec): min=343, max=945, avg=554.30, stdev=338.73 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 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= 7907, max= 8143, per=42.05%, avg=8025.00, stdev=166.88, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.18%, sys=15.56%, ctx=61, 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=9548KiB/s (9777kB/s), 2387KiB/s-7969KiB/s (2444kB/s-8160kB/s), io=16.0MiB (16.8MB), run=1542-1716msec WRITE: bw=18.6MiB/s (19.5MB/s), 4774KiB/s-7380KiB/s (4888kB/s-7557kB/s), io=32.0MiB (33.6MB), run=1665-1717msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146860: Sat Aug 8 08:52:03 2026 read: IOPS=1, BW=6047KiB/s (6192kB/s)(12.0MiB/2032msec) clat (msec): min=197, max=1131, avg=663.13, stdev=466.91 lat (msec): min=197, max=1131, avg=663.13, stdev=466.91 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.42%, ctx=81, 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=146861: Sat Aug 8 08:52:03 2026 read: IOPS=0, BW=2089KiB/s (2139kB/s)(4096KiB/1961msec) clat (nsec): min=694416k, max=694416k, avg=694415736.00, stdev= 0.00 lat (nsec): min=694416k, max=694416k, avg=694416463.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 693], 50.00th=[ 693], 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= 5649, max= 5649, per=70.07%, avg=5649.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4177KiB/s (4278kB/s)(8192KiB/1961msec); 0 zone resets clat (msec): min=504, max=759, avg=632.21, stdev=180.35 lat (msec): min=504, max=760, avg=632.51, stdev=180.39 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8159, max= 8159, per=48.83%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.05%, sys=13.06%, ctx=41, 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=146862: Sat Aug 8 08:52:03 2026 write: IOPS=1, BW=6682KiB/s (6842kB/s)(12.0MiB/1839msec); 0 zone resets clat (msec): min=150, max=1108, avg=612.43, stdev=479.61 lat (msec): min=151, max=1108, avg=612.70, stdev=479.63 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 1116], 80.00th=[ 1116], 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= 5634, max= 8175, per=41.32%, avg=6904.50, stdev=1796.76, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.33%, ctx=62, 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=146863: Sat Aug 8 08:52:03 2026 write: IOPS=1, BW=7232KiB/s (7406kB/s)(12.0MiB/1699msec); 0 zone resets clat (msec): min=375, max=691, avg=558.03, stdev=163.83 lat (msec): min=375, max=691, avg=558.32, stdev=163.74 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 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= 8031, max= 8192, per=48.55%, avg=8111.50, stdev=113.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=25.44%, ctx=228, 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 Run status group 0 (all jobs): READ: bw=8063KiB/s (8257kB/s), 2089KiB/s-6047KiB/s (2139kB/s-6192kB/s), io=16.0MiB (16.8MB), run=1961-2032msec WRITE: bw=16.3MiB/s (17.1MB/s), 4177KiB/s-7232KiB/s (4278kB/s-7406kB/s), io=32.0MiB (33.6MB), run=1699-1961msec