== sanity test 398b: DIO and buffer IO race ============== 09:36:27 (1787578587) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.72853 s, 10.6 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=145164: Mon Aug 24 09:38:56 2026 read: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5992KiB/132652msec) clat (usec): min=38, max=1382.2k, avg=43322.12, stdev=48293.40 lat (usec): min=38, max=1382.2k, avg=43323.51, stdev=48293.45 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 7635], | 20.00th=[ 18744], 30.00th=[ 24249], 40.00th=[ 30016], | 50.00th=[ 35914], 60.00th=[ 43254], 70.00th=[ 51643], | 80.00th=[ 63701], 90.00th=[ 82314], 95.00th=[ 98042], | 99.00th=[ 154141], 99.50th=[ 191890], 99.90th=[ 471860], | 99.95th=[1384121], 99.99th=[1384121] bw ( KiB/s): min= 7, max= 111, per=25.30%, avg=45.54, stdev=20.25, samples=255 iops : min= 1, max= 27, avg=10.79, stdev= 5.10, samples=255 write: IOPS=11, BW=47.5KiB/s (48.6kB/s)(6296KiB/132652msec); 0 zone resets clat (usec): min=947, max=323765, avg=42646.52, stdev=44635.93 lat (usec): min=948, max=323767, avg=42648.64, stdev=44635.93 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1844], 20.00th=[ 4490], | 30.00th=[ 8979], 40.00th=[ 19530], 50.00th=[ 31851], 60.00th=[ 42206], | 70.00th=[ 54789], 80.00th=[ 72877], 90.00th=[ 99091], 95.00th=[125305], | 99.00th=[198181], 99.50th=[238027], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 7, max= 119, per=25.50%, avg=47.94, stdev=19.81, samples=255 iops : min= 1, max= 29, avg=11.39, stdev= 4.97, samples=255 lat (usec) : 50=0.52%, 100=3.65%, 250=0.29%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.23% lat (msec) : 2=5.60%, 4=3.71%, 10=7.06%, 20=10.22%, 50=35.32% lat (msec) : 100=25.91%, 250=7.00%, 500=0.29%, 2000=0.03% cpu : usr=0.07%, sys=5.14%, ctx=6489, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145165: Mon Aug 24 09:38:56 2026 read: IOPS=11, BW=45.1KiB/s (46.2kB/s)(5940KiB/131676msec) clat (usec): min=26, max=1353.0k, avg=43188.89, stdev=49138.13 lat (usec): min=27, max=1353.0k, avg=43191.87, stdev=49140.54 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 60], 10.00th=[ 529], | 20.00th=[ 18482], 30.00th=[ 23725], 40.00th=[ 29492], | 50.00th=[ 35390], 60.00th=[ 42206], 70.00th=[ 50070], | 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[ 166724], 99.50th=[ 221250], 99.90th=[ 442500], | 99.95th=[1350566], 99.99th=[1350566] bw ( KiB/s): min= 7, max= 111, per=25.36%, avg=45.65, stdev=20.18, samples=254 iops : min= 1, max= 27, avg=10.82, stdev= 5.07, samples=254 write: IOPS=12, BW=48.2KiB/s (49.4kB/s)(6348KiB/131676msec); 0 zone resets clat (usec): min=784, max=316346, avg=42188.79, stdev=44979.94 lat (usec): min=785, max=316348, avg=42192.83, stdev=44981.08 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1188], 10.00th=[ 1565], 20.00th=[ 3916], | 30.00th=[ 7570], 40.00th=[ 17433], 50.00th=[ 30540], 60.00th=[ 42730], | 70.00th=[ 54789], 80.00th=[ 70779], 90.00th=[101188], 95.00th=[125305], | 99.00th=[204473], 99.50th=[246416], 99.90th=[308282], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 127, per=25.88%, avg=48.66, stdev=22.50, samples=255 iops : min= 1, max= 31, avg=11.57, stdev= 5.67, samples=255 lat (usec) : 50=0.81%, 100=3.29%, 250=0.59%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.33% lat (msec) : 2=6.02%, 4=4.30%, 10=7.00%, 20=10.38%, 50=34.90% lat (msec) : 100=24.48%, 250=7.36%, 500=0.29%, 2000=0.03% cpu : usr=0.08%, sys=5.11%, ctx=6461, 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=145166: Mon Aug 24 09:38:56 2026 read: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6028KiB/133271msec) clat (usec): min=35, max=411904, avg=42168.52, stdev=34844.94 lat (usec): min=35, max=411905, avg=42170.98, stdev=34844.89 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 59], 10.00th=[ 147], 20.00th=[ 17957], | 30.00th=[ 23987], 40.00th=[ 28443], 50.00th=[ 34341], 60.00th=[ 42206], | 70.00th=[ 51643], 80.00th=[ 63701], 90.00th=[ 83362], 95.00th=[102237], | 99.00th=[160433], 99.50th=[187696], 99.90th=[362808], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 7, max= 111, per=25.21%, avg=45.37, stdev=20.76, samples=259 iops : min= 1, max= 27, avg=10.75, stdev= 5.25, samples=259 write: IOPS=11, BW=46.0KiB/s (48.1kB/s)(6260KiB/133271msec); 0 zone resets clat (usec): min=892, max=1368.0k, avg=44197.21, stdev=55548.30 lat (usec): min=893, max=1368.0k, avg=44198.96, stdev=55548.43 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1188], 10.00th=[ 1565], | 20.00th=[ 4424], 30.00th=[ 9110], 40.00th=[ 20317], | 50.00th=[ 31065], 60.00th=[ 43254], 70.00th=[ 57410], | 80.00th=[ 74974], 90.00th=[ 104334], 95.00th=[ 135267], | 99.00th=[ 189793], 99.50th=[ 223347], 99.90th=[ 371196], | 99.95th=[1367344], 99.99th=[1367344] bw ( KiB/s): min= 7, max= 136, per=24.99%, avg=46.98, stdev=21.52, samples=260 iops : min= 1, max= 34, avg=11.14, stdev= 5.42, samples=260 lat (usec) : 50=0.62%, 100=3.94%, 250=0.62%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.29% lat (msec) : 2=6.05%, 4=3.39%, 10=6.77%, 20=9.77%, 50=34.51% lat (msec) : 100=25.49%, 250=8.11%, 500=0.16%, 2000=0.03% cpu : usr=0.07%, sys=5.14%, ctx=6480, 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=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=145167: Mon Aug 24 09:38:56 2026 read: IOPS=11, BW=46.1KiB/s (47.3kB/s)(6052KiB/131155msec) clat (usec): min=31, max=259982, avg=42929.06, stdev=33735.34 lat (usec): min=31, max=259983, avg=42933.45, stdev=33735.91 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 922], 20.00th=[ 18220], | 30.00th=[ 23462], 40.00th=[ 29230], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 52691], 80.00th=[ 64226], 90.00th=[ 83362], 95.00th=[106431], | 99.00th=[152044], 99.50th=[189793], 99.90th=[246416], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 7, max= 111, per=25.98%, avg=46.77, stdev=21.01, samples=253 iops : min= 1, max= 27, avg=11.10, stdev= 5.30, samples=253 write: IOPS=11, BW=47.5KiB/s (48.7kB/s)(6236KiB/131155msec); 0 zone resets clat (usec): min=833, max=1638.8k, avg=42074.67, stdev=60362.33 lat (usec): min=834, max=1638.8k, avg=42078.38, stdev=60362.85 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1467], | 20.00th=[ 3720], 30.00th=[ 8160], 40.00th=[ 17957], | 50.00th=[ 28967], 60.00th=[ 40109], 70.00th=[ 53740], | 80.00th=[ 67634], 90.00th=[ 95945], 95.00th=[ 131597], | 99.00th=[ 204473], 99.50th=[ 233833], 99.90th=[ 375391], | 99.95th=[1635779], 99.99th=[1635779] bw ( KiB/s): min= 7, max= 126, per=25.33%, avg=47.62, stdev=20.70, samples=256 iops : min= 1, max= 31, avg=11.32, stdev= 5.23, samples=256 lat (usec) : 50=0.81%, 100=3.45%, 250=0.46%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=6.54%, 4=3.97%, 10=6.38%, 20=10.84%, 50=34.54% lat (msec) : 100=25.10%, 250=7.42%, 500=0.16%, 2000=0.03% cpu : usr=0.07%, sys=5.13%, ctx=6427, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=180KiB/s (184kB/s), 45.1KiB/s-46.1KiB/s (46.2kB/s-47.3kB/s), io=23.4MiB (24.6MB), run=131155-133271msec WRITE: bw=189KiB/s (193kB/s), 46.0KiB/s-48.2KiB/s (48.1kB/s-49.4kB/s), io=24.6MiB (25.7MB), run=131155-133271msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145160: Mon Aug 24 09:41:28 2026 read: IOPS=5, BW=21.0KiB/s (21.5kB/s)(5992KiB/284737msec) clat (msec): min=5, max=1382, avg=40.05, stdev=50.50 lat (msec): min=5, max=1382, avg=40.06, stdev=50.51 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 52], 90.00th=[ 80], 95.00th=[ 108], | 99.00th=[ 188], 99.50th=[ 251], 99.90th=[ 443], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7, max= 79, per=28.38%, avg=23.84, stdev=15.72, samples=485 iops : min= 1, max= 19, avg= 5.33, stdev= 3.96, samples=485 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6296KiB/284737msec); 0 zone resets clat (msec): min=23, max=676, avg=142.45, stdev=73.23 lat (msec): min=23, max=676, avg=142.45, stdev=73.24 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 63], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 101], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 140], | 70.00th=[ 157], 80.00th=[ 184], 90.00th=[ 236], 95.00th=[ 279], | 99.00th=[ 418], 99.50th=[ 464], 99.90th=[ 651], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 56, per=25.05%, avg=22.05, stdev= 9.98, samples=549 iops : min= 1, max= 14, avg= 4.89, stdev= 2.57, samples=549 lat (msec) : 10=1.89%, 20=12.99%, 50=23.99%, 100=22.23%, 250=34.44% lat (msec) : 500=4.36%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.12%, ctx=5426, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145161: Mon Aug 24 09:41:28 2026 read: IOPS=5, BW=20.8KiB/s (21.3kB/s)(5940KiB/285417msec) clat (msec): min=5, max=1367, avg=40.19, stdev=50.27 lat (msec): min=5, max=1367, avg=40.19, stdev=50.27 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 53], 90.00th=[ 79], 95.00th=[ 110], | 99.00th=[ 188], 99.50th=[ 215], 99.90th=[ 426], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 88, per=28.49%, avg=23.94, stdev=15.51, samples=479 iops : min= 1, max= 22, avg= 5.37, stdev= 3.94, samples=479 write: IOPS=5, BW=22.2KiB/s (22.8kB/s)(6348KiB/285417msec); 0 zone resets clat (msec): min=37, max=709, avg=141.87, stdev=74.58 lat (msec): min=37, max=709, avg=141.88, stdev=74.60 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 73], 20.00th=[ 85], | 30.00th=[ 99], 40.00th=[ 110], 50.00th=[ 124], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 186], 90.00th=[ 232], 95.00th=[ 279], | 99.00th=[ 430], 99.50th=[ 481], 99.90th=[ 642], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 55, per=25.14%, avg=22.12, stdev= 9.86, samples=552 iops : min= 1, max= 13, avg= 4.91, stdev= 2.54, samples=552 lat (msec) : 10=2.96%, 20=11.33%, 50=24.15%, 100=22.98%, 250=34.34% lat (msec) : 500=4.04%, 750=0.16%, 2000=0.03% cpu : usr=0.04%, sys=1.14%, ctx=5371, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145162: Mon Aug 24 09:41:28 2026 read: IOPS=5, BW=21.3KiB/s (21.8kB/s)(6028KiB/283441msec) clat (msec): min=5, max=411, avg=39.97, stdev=38.67 lat (msec): min=5, max=411, avg=39.97, stdev=38.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 54], 90.00th=[ 79], 95.00th=[ 112], | 99.00th=[ 211], 99.50th=[ 264], 99.90th=[ 376], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 111, per=28.50%, avg=23.94, stdev=16.07, samples=486 iops : min= 1, max= 27, avg= 5.36, stdev= 4.06, samples=486 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6260KiB/283441msec); 0 zone resets clat (msec): min=35, max=1555, avg=142.28, stdev=82.01 lat (msec): min=35, max=1555, avg=142.28, stdev=82.01 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 64], 10.00th=[ 73], 20.00th=[ 87], | 30.00th=[ 99], 40.00th=[ 111], 50.00th=[ 125], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 184], 90.00th=[ 236], 95.00th=[ 279], | 99.00th=[ 418], 99.50th=[ 498], 99.90th=[ 827], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 63, per=25.11%, avg=22.10, stdev=10.07, samples=545 iops : min= 1, max= 15, avg= 4.90, stdev= 2.59, samples=545 lat (msec) : 10=2.64%, 20=11.72%, 50=24.61%, 100=23.11%, 250=33.59% lat (msec) : 500=4.13%, 750=0.13%, 1000=0.03%, 2000=0.03% cpu : usr=0.03%, sys=1.11%, ctx=5382, 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=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=145163: Mon Aug 24 09:41:28 2026 read: IOPS=5, BW=21.4KiB/s (21.9kB/s)(6052KiB/282546msec) clat (msec): min=5, max=388, avg=38.88, stdev=38.29 lat (msec): min=5, max=388, avg=38.88, stdev=38.29 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 78], 95.00th=[ 104], | 99.00th=[ 201], 99.50th=[ 279], 99.90th=[ 359], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 111, per=29.31%, avg=24.62, stdev=16.84, samples=475 iops : min= 1, max= 27, avg= 5.55, stdev= 4.25, samples=475 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6236KiB/282546msec); 0 zone resets clat (msec): min=37, max=1588, avg=143.16, stdev=82.30 lat (msec): min=37, max=1588, avg=143.16, stdev=82.30 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 73], 20.00th=[ 86], | 30.00th=[ 100], 40.00th=[ 110], 50.00th=[ 124], 60.00th=[ 140], | 70.00th=[ 161], 80.00th=[ 186], 90.00th=[ 239], 95.00th=[ 296], | 99.00th=[ 409], 99.50th=[ 472], 99.90th=[ 667], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 63, per=24.94%, avg=21.95, stdev=10.24, samples=546 iops : min= 1, max= 15, avg= 4.87, stdev= 2.64, samples=546 lat (msec) : 10=2.99%, 20=12.89%, 50=24.09%, 100=22.20%, 250=32.98% lat (msec) : 500=4.65%, 750=0.16%, 2000=0.03% cpu : usr=0.04%, sys=1.15%, ctx=5406, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=84.1KiB/s (86.1kB/s), 20.8KiB/s-21.4KiB/s (21.3kB/s-21.9kB/s), io=23.4MiB (24.6MB), run=282546-285417msec WRITE: bw=88.1KiB/s (90.2kB/s), 22.1KiB/s-22.2KiB/s (22.6kB/s-22.8kB/s), io=24.6MiB (25.7MB), run=282546-285417msec 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=145225: Mon Aug 24 09:42:03 2026 read: IOPS=14, BW=235KiB/s (240kB/s)(5920KiB/25243msec) clat (usec): min=32, max=174558, avg=33835.13, stdev=30520.17 lat (usec): min=32, max=174560, avg=33836.29, stdev=30520.26 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 76], | 30.00th=[ 16712], 40.00th=[ 24511], 50.00th=[ 30802], 60.00th=[ 36439], | 70.00th=[ 45351], 80.00th=[ 55837], 90.00th=[ 72877], 95.00th=[ 92799], | 99.00th=[130548], 99.50th=[166724], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 95, max= 669, per=26.11%, avg=241.79, stdev=108.81, samples=48 iops : min= 5, max= 41, avg=14.40, stdev= 6.89, samples=48 write: IOPS=15, BW=252KiB/s (258kB/s)(6368KiB/25243msec); 0 zone resets clat (usec): min=1373, max=254484, avg=31675.79, stdev=37071.15 lat (usec): min=1375, max=254485, avg=31695.15, stdev=37060.39 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1680], 10.00th=[ 2474], 20.00th=[ 4359], | 30.00th=[ 7373], 40.00th=[ 11469], 50.00th=[ 17695], 60.00th=[ 29492], | 70.00th=[ 39060], 80.00th=[ 51119], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[181404], 99.50th=[248513], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 94, max= 446, per=26.07%, avg=254.18, stdev=93.33, samples=49 iops : min= 5, max= 27, avg=15.18, stdev= 5.90, samples=49 lat (usec) : 50=1.69%, 100=9.77%, 250=1.04%, 500=0.13%, 1000=0.13% lat (msec) : 2=3.91%, 4=6.12%, 10=9.51%, 20=11.59%, 50=33.33% lat (msec) : 100=18.36%, 250=4.30%, 500=0.13% cpu : usr=0.07%, sys=6.69%, ctx=1353, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145226: Mon Aug 24 09:42:03 2026 read: IOPS=14, BW=227KiB/s (232kB/s)(5744KiB/25304msec) clat (usec): min=36, max=182265, avg=34998.30, stdev=29552.19 lat (usec): min=36, max=182266, avg=34999.50, stdev=29552.23 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 56], 10.00th=[ 67], 20.00th=[ 127], | 30.00th=[ 20055], 40.00th=[ 26346], 50.00th=[ 31589], 60.00th=[ 39060], | 70.00th=[ 44827], 80.00th=[ 55837], 90.00th=[ 73925], 95.00th=[ 93848], | 99.00th=[126354], 99.50th=[128451], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 62, max= 478, per=25.15%, avg=232.90, stdev=91.16, samples=48 iops : min= 3, max= 29, avg=13.81, stdev= 5.70, samples=48 write: IOPS=16, BW=259KiB/s (265kB/s)(6544KiB/25304msec); 0 zone resets clat (usec): min=1373, max=368085, avg=31005.01, stdev=38737.61 lat (usec): min=1374, max=368088, avg=31015.66, stdev=38735.99 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1778], 10.00th=[ 2442], 20.00th=[ 4015], | 30.00th=[ 6194], 40.00th=[ 8979], 50.00th=[ 16450], 60.00th=[ 24511], | 70.00th=[ 35914], 80.00th=[ 55313], 90.00th=[ 74974], 95.00th=[100140], | 99.00th=[162530], 99.50th=[166724], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 31, max= 508, per=26.65%, avg=259.88, stdev=105.03, samples=49 iops : min= 1, max= 31, avg=15.53, stdev= 6.64, samples=49 lat (usec) : 50=1.17%, 100=7.29%, 250=1.56%, 500=0.13%, 1000=0.13% lat (msec) : 2=4.17%, 4=6.90%, 10=11.72%, 20=9.64%, 50=32.81% lat (msec) : 100=20.05%, 250=4.30%, 500=0.13% cpu : usr=0.08%, sys=6.69%, ctx=1402, 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=145227: Mon Aug 24 09:42:03 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(6256KiB/25845msec) clat (usec): min=39, max=167238, avg=34824.88, stdev=28803.75 lat (usec): min=39, max=167238, avg=34826.13, stdev=28803.74 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 123], | 30.00th=[ 19006], 40.00th=[ 26084], 50.00th=[ 32900], 60.00th=[ 40109], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 67634], 95.00th=[ 85459], | 99.00th=[114820], 99.50th=[154141], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 64, max= 447, per=26.13%, avg=241.92, stdev=95.29, samples=51 iops : min= 4, max= 27, avg=14.39, stdev= 5.97, samples=51 write: IOPS=14, BW=233KiB/s (239kB/s)(6032KiB/25845msec); 0 zone resets clat (usec): min=1399, max=323693, avg=32086.68, stdev=38373.51 lat (usec): min=1402, max=323695, avg=32090.08, stdev=38372.84 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1926], 10.00th=[ 2802], 20.00th=[ 4490], | 30.00th=[ 7111], 40.00th=[ 11076], 50.00th=[ 17695], 60.00th=[ 27395], | 70.00th=[ 39584], 80.00th=[ 54789], 90.00th=[ 78119], 95.00th=[111674], | 99.00th=[160433], 99.50th=[227541], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 93, max= 447, per=23.84%, avg=232.47, stdev=90.98, samples=51 iops : min= 5, max= 27, avg=13.80, stdev= 5.75, samples=51 lat (usec) : 50=1.04%, 100=8.59%, 250=2.08%, 500=0.39%, 750=0.13% lat (msec) : 2=3.12%, 4=5.47%, 10=10.42%, 20=10.42%, 50=33.07% lat (msec) : 100=20.70%, 250=4.43%, 500=0.13% cpu : usr=0.08%, sys=6.88%, ctx=1515, 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=145228: Mon Aug 24 09:42:03 2026 read: IOPS=15, BW=256KiB/s (262kB/s)(6032KiB/23606msec) clat (usec): min=36, max=197474, avg=32618.55, stdev=32091.04 lat (usec): min=36, max=197474, avg=32619.62, stdev=32091.05 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 74], | 30.00th=[ 3294], 40.00th=[ 20579], 50.00th=[ 30016], 60.00th=[ 36963], | 70.00th=[ 43779], 80.00th=[ 52691], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[139461], 99.50th=[191890], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 605, per=27.35%, avg=253.24, stdev=98.01, samples=46 iops : min= 1, max= 37, avg=15.09, stdev= 6.16, samples=46 write: IOPS=16, BW=265KiB/s (271kB/s)(6256KiB/23606msec); 0 zone resets clat (usec): min=1322, max=226177, avg=28715.40, stdev=32724.82 lat (usec): min=1324, max=226179, avg=28730.87, stdev=32724.29 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1729], 10.00th=[ 2474], 20.00th=[ 4228], | 30.00th=[ 6128], 40.00th=[ 9110], 50.00th=[ 15795], 60.00th=[ 25035], | 70.00th=[ 36439], 80.00th=[ 49546], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[154141], 99.50th=[173016], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 62, max= 509, per=27.03%, avg=263.59, stdev=103.71, samples=46 iops : min= 3, max= 31, avg=15.74, stdev= 6.53, samples=46 lat (usec) : 50=1.95%, 100=10.94%, 250=1.04%, 500=0.13%, 1000=0.13% lat (msec) : 2=3.91%, 4=6.51%, 10=12.11%, 20=11.07%, 50=30.60% lat (msec) : 100=18.49%, 250=3.12% cpu : usr=0.11%, sys=6.96%, ctx=1329, 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=927KiB/s (949kB/s), 227KiB/s-256KiB/s (232kB/s-262kB/s), io=23.4MiB (24.5MB), run=23606-25845msec WRITE: bw=975KiB/s (998kB/s), 233KiB/s-265KiB/s (239kB/s-271kB/s), io=24.6MiB (25.8MB), run=23606-25845msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145230: Mon Aug 24 09:42:45 2026 read: IOPS=5, BW=87.5KiB/s (89.6kB/s)(5920KiB/67676msec) clat (msec): min=6, max=337, avg=37.28, stdev=37.87 lat (msec): min=6, max=337, avg=37.28, stdev=37.87 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 50], 90.00th=[ 71], 95.00th=[ 103], | 99.00th=[ 205], 99.50th=[ 292], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 30, max= 319, per=27.62%, avg=97.51, stdev=59.71, samples=118 iops : min= 1, max= 19, avg= 5.40, stdev= 3.81, samples=118 write: IOPS=5, BW=94.1KiB/s (96.4kB/s)(6368KiB/67676msec); 0 zone resets clat (msec): min=47, max=399, avg=135.22, stdev=64.31 lat (msec): min=47, max=399, avg=135.23, stdev=64.31 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 66], 10.00th=[ 73], 20.00th=[ 84], | 30.00th=[ 94], 40.00th=[ 106], 50.00th=[ 121], 60.00th=[ 138], | 70.00th=[ 150], 80.00th=[ 174], 90.00th=[ 224], 95.00th=[ 268], | 99.00th=[ 347], 99.50th=[ 397], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 22, max= 191, per=25.38%, avg=94.41, stdev=41.59, samples=132 iops : min= 1, max= 11, avg= 5.19, stdev= 2.67, samples=132 lat (msec) : 10=2.60%, 20=14.45%, 50=22.53%, 100=24.87%, 250=32.03% lat (msec) : 500=3.52% cpu : usr=0.04%, sys=1.21%, ctx=1305, 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=145231: Mon Aug 24 09:42:45 2026 read: IOPS=5, BW=84.9KiB/s (86.0kB/s)(5744KiB/67628msec) clat (msec): min=7, max=328, avg=37.33, stdev=40.10 lat (msec): min=7, max=328, avg=37.33, stdev=40.10 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 72], 95.00th=[ 112], | 99.00th=[ 268], 99.50th=[ 305], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 22, max= 288, per=27.43%, avg=96.84, stdev=57.48, samples=116 iops : min= 1, max= 18, avg= 5.34, stdev= 3.67, samples=116 write: IOPS=6, BW=96.8KiB/s (99.1kB/s)(6544KiB/67628msec); 0 zone resets clat (msec): min=34, max=397, avg=132.37, stdev=66.90 lat (msec): min=34, max=397, avg=132.38, stdev=66.90 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 83], | 30.00th=[ 93], 40.00th=[ 104], 50.00th=[ 114], 60.00th=[ 129], | 70.00th=[ 146], 80.00th=[ 178], 90.00th=[ 224], 95.00th=[ 271], | 99.00th=[ 355], 99.50th=[ 372], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 192, per=25.80%, avg=95.98, stdev=45.26, samples=133 iops : min= 1, max= 12, avg= 5.29, stdev= 2.93, samples=133 lat (msec) : 10=1.69%, 20=12.89%, 50=25.13%, 100=23.70%, 250=32.42% lat (msec) : 500=4.17% cpu : usr=0.06%, sys=1.34%, ctx=1324, 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=145232: Mon Aug 24 09:42:45 2026 read: IOPS=6, BW=97.7KiB/s (100kB/s)(6256KiB/64035msec) clat (msec): min=6, max=222, avg=34.02, stdev=30.00 lat (msec): min=6, max=222, avg=34.02, stdev=30.00 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 73], 95.00th=[ 94], | 99.00th=[ 159], 99.50th=[ 180], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 30, max= 351, per=29.98%, avg=105.85, stdev=72.65, samples=117 iops : min= 1, max= 21, avg= 5.91, stdev= 4.59, samples=117 write: IOPS=5, BW=94.2KiB/s (96.5kB/s)(6032KiB/64035msec); 0 zone resets clat (msec): min=42, max=377, avg=134.38, stdev=63.10 lat (msec): min=42, max=377, avg=134.38, stdev=63.10 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 72], 20.00th=[ 83], | 30.00th=[ 92], 40.00th=[ 105], 50.00th=[ 115], 60.00th=[ 132], | 70.00th=[ 157], 80.00th=[ 184], 90.00th=[ 224], 95.00th=[ 257], | 99.00th=[ 359], 99.50th=[ 372], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 191, per=25.40%, avg=94.50, stdev=40.30, samples=125 iops : min= 1, max= 11, avg= 5.20, stdev= 2.59, samples=125 lat (msec) : 10=3.52%, 20=16.54%, 50=21.74%, 100=24.87%, 250=30.47% lat (msec) : 500=2.86% cpu : usr=0.04%, sys=1.32%, ctx=1387, 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=145233: Mon Aug 24 09:42:45 2026 read: IOPS=5, BW=89.6KiB/s (91.7kB/s)(6032KiB/67351msec) clat (msec): min=7, max=374, avg=39.36, stdev=44.93 lat (msec): min=7, max=374, avg=39.37, stdev=44.93 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 53], 90.00th=[ 75], 95.00th=[ 123], | 99.00th=[ 243], 99.50th=[ 338], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 287, per=29.09%, avg=102.69, stdev=64.89, samples=115 iops : min= 1, max= 17, avg= 5.73, stdev= 4.08, samples=115 write: IOPS=5, BW=92.9KiB/s (95.1kB/s)(6256KiB/67351msec); 0 zone resets clat (msec): min=38, max=488, avg=134.09, stdev=67.05 lat (msec): min=38, max=488, avg=134.09, stdev=67.05 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 63], 10.00th=[ 69], 20.00th=[ 86], | 30.00th=[ 95], 40.00th=[ 106], 50.00th=[ 118], 60.00th=[ 133], | 70.00th=[ 150], 80.00th=[ 167], 90.00th=[ 211], 95.00th=[ 271], | 99.00th=[ 401], 99.50th=[ 472], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 31, max= 223, per=25.28%, avg=94.04, stdev=42.54, samples=131 iops : min= 1, max= 13, avg= 5.18, stdev= 2.75, samples=131 lat (msec) : 10=1.30%, 20=17.19%, 50=21.09%, 100=24.35%, 250=32.55% lat (msec) : 500=3.52% cpu : usr=0.04%, sys=1.31%, ctx=1342, 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=354KiB/s (362kB/s), 84.9KiB/s-97.7KiB/s (86.0kB/s-100kB/s), io=23.4MiB (24.5MB), run=64035-67676msec WRITE: bw=372KiB/s (381kB/s), 92.9KiB/s-96.8KiB/s (95.1kB/s-99.1kB/s), io=24.6MiB (25.8MB), run=64035-67676msec 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=145249: Mon Aug 24 09:43:00 2026 read: IOPS=1, BW=1785KiB/s (1828kB/s)(7168KiB/4016msec) clat (usec): min=619, max=523834, avg=145070.70, stdev=207180.54 lat (usec): min=621, max=523836, avg=145071.98, stdev=207180.76 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 734], | 30.00th=[ 1795], 40.00th=[ 1795], 50.00th=[ 3326], 60.00th=[162530], | 70.00th=[162530], 80.00th=[320865], 90.00th=[522191], 95.00th=[522191], | 99.00th=[522191], 99.50th=[522191], 99.90th=[522191], 99.95th=[522191], | 99.99th=[522191] bw ( KiB/s): min= 2015, max= 6059, per=87.23%, avg=4053.67, stdev=2022.21, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1275KiB/s (1305kB/s)(5120KiB/4016msec); 0 zone resets clat (msec): min=238, max=1219, avg=543.96, stdev=390.27 lat (msec): min=238, max=1219, avg=544.27, stdev=390.18 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1861, max= 4031, per=40.53%, avg=2637.00, stdev=1209.82, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 4=8.33%, 250=16.67%, 500=25.00%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=9.22%, ctx=189, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145250: Mon Aug 24 09:43:00 2026 read: IOPS=0, BW=465KiB/s (476kB/s)(2048KiB/4407msec) clat (usec): min=531, max=167704, avg=84117.89, stdev=118208.71 lat (usec): min=532, max=167707, avg=84120.24, stdev=118210.41 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 529], 60.00th=[166724], | 70.00th=[166724], 80.00th=[166724], 90.00th=[166724], 95.00th=[166724], | 99.00th=[166724], 99.50th=[166724], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 1630, max= 1802, per=36.93%, avg=1716.00, stdev=121.62, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2324KiB/s (2379kB/s)(10.0MiB/4407msec); 0 zone resets clat (msec): min=161, max=1254, avg=417.95, stdev=319.09 lat (msec): min=161, max=1254, avg=418.28, stdev=318.96 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 215], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 326], 80.00th=[ 498], 90.00th=[ 567], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 1630, max= 4039, per=43.58%, avg=2835.33, stdev=1063.27, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.07%, sys=14.43%, ctx=134, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145251: Mon Aug 24 09:43:00 2026 read: IOPS=1, BW=1874KiB/s (1919kB/s)(6144KiB/3278msec) clat (usec): min=530, max=326154, avg=179640.70, stdev=145071.86 lat (usec): min=532, max=326156, avg=179641.89, stdev=145071.88 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 791], | 30.00th=[ 791], 40.00th=[198181], 50.00th=[198181], 60.00th=[258999], | 70.00th=[295699], 80.00th=[295699], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 1861, max= 6059, per=71.16%, avg=3306.67, stdev=2384.60, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1874KiB/s (1919kB/s)(6144KiB/3278msec); 0 zone resets clat (msec): min=135, max=494, avg=322.21, stdev=124.15 lat (msec): min=135, max=494, avg=322.35, stdev=124.19 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 363], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 1620, max= 4087, per=35.44%, avg=2305.60, stdev=1009.03, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=25.00%, 500=58.33% cpu : usr=0.03%, sys=17.18%, ctx=196, 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=145252: Mon Aug 24 09:43:00 2026 read: IOPS=1, BW=1656KiB/s (1696kB/s)(5120KiB/3091msec) clat (usec): min=779, max=334495, avg=100723.06, stdev=148577.66 lat (usec): min=780, max=334497, avg=100724.38, stdev=148577.72 clat percentiles (usec): | 1.00th=[ 783], 5.00th=[ 783], 10.00th=[ 783], 20.00th=[ 783], | 30.00th=[ 1614], 40.00th=[ 1614], 50.00th=[ 2008], 60.00th=[ 2008], | 70.00th=[164627], 80.00th=[164627], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7447, max= 7447, per=100.00%, avg=7447.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2319KiB/s (2375kB/s)(7168KiB/3091msec); 0 zone resets clat (msec): min=237, max=590, avg=335.73, stdev=122.16 lat (msec): min=237, max=590, avg=335.94, stdev=122.09 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 300], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 380], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1662, max= 4087, per=37.53%, avg=2442.00, stdev=1108.86, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=16.67%, 250=25.00%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=17.73%, ctx=154, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4647KiB/s (4759kB/s), 465KiB/s-1874KiB/s (476kB/s-1919kB/s), io=20.0MiB (20.0MB), run=3091-4407msec WRITE: bw=6506KiB/s (6662kB/s), 1275KiB/s-2324KiB/s (1305kB/s-2379kB/s), io=28.0MiB (29.4MB), run=3091-4407msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145253: Mon Aug 24 09:43:01 2026 read: IOPS=1, BW=1782KiB/s (1825kB/s)(7168KiB/4022msec) clat (msec): min=82, max=428, avg=187.93, stdev=113.35 lat (msec): min=82, max=428, avg=187.93, stdev=113.35 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 124], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 159], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 209], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 2019, max= 4096, per=76.82%, avg=3205.00, stdev=1069.46, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1273KiB/s (1304kB/s)(5120KiB/4022msec); 0 zone resets clat (msec): min=166, max=1072, avg=531.41, stdev=348.52 lat (msec): min=166, max=1072, avg=531.55, stdev=348.53 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 1750, max= 4039, per=42.09%, avg=2458.75, stdev=1061.33, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.33%, ctx=80, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145254: Mon Aug 24 09:43:01 2026 read: IOPS=0, BW=417KiB/s (427kB/s)(2048KiB/4908msec) clat (msec): min=112, max=127, avg=120.36, stdev=10.78 lat (msec): min=112, max=127, avg=120.36, stdev=10.78 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 129], | 70.00th=[ 129], 80.00th=[ 129], 90.00th=[ 129], 95.00th=[ 129], | 99.00th=[ 129], 99.50th=[ 129], 99.90th=[ 129], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 1442, max= 2019, per=41.48%, avg=1730.50, stdev=408.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2086KiB/s (2136kB/s)(10.0MiB/4908msec); 0 zone resets clat (msec): min=192, max=1268, avg=443.53, stdev=312.91 lat (msec): min=192, max=1268, avg=443.67, stdev=312.89 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 230], | 30.00th=[ 268], 40.00th=[ 309], 50.00th=[ 313], 60.00th=[ 368], | 70.00th=[ 418], 80.00th=[ 493], 90.00th=[ 575], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 1750, max= 4087, per=43.96%, avg=2567.43, stdev=1026.68, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.54%, ctx=115, 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=145255: Mon Aug 24 09:43:01 2026 read: IOPS=1, BW=1385KiB/s (1419kB/s)(6144KiB/4435msec) clat (msec): min=114, max=519, avg=239.00, stdev=146.33 lat (msec): min=114, max=519, avg=239.01, stdev=146.32 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 220], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 2011, max= 4047, per=60.52%, avg=2525.00, stdev=1014.68, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1385KiB/s (1419kB/s)(6144KiB/4435msec); 0 zone resets clat (msec): min=195, max=798, avg=434.86, stdev=214.61 lat (msec): min=195, max=800, avg=435.24, stdev=215.20 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 409], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1750, max= 2039, per=33.80%, avg=1974.17, stdev=110.49, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.05%, sys=4.92%, ctx=93, 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=145256: Mon Aug 24 09:43:01 2026 read: IOPS=1, BW=1114KiB/s (1141kB/s)(5120KiB/4595msec) clat (msec): min=66, max=530, avg=205.13, stdev=186.95 lat (msec): min=66, max=530, avg=205.13, stdev=186.95 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 67], | 30.00th=[ 105], 40.00th=[ 105], 50.00th=[ 146], 60.00th=[ 146], | 70.00th=[ 178], 80.00th=[ 178], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 2023, max= 4039, per=64.73%, avg=2700.33, stdev=1159.35, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1560KiB/s (1597kB/s)(7168KiB/4595msec); 0 zone resets clat (msec): min=227, max=978, avg=462.62, stdev=250.59 lat (msec): min=227, max=979, avg=462.75, stdev=250.64 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 292], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 418], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 542], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1750, max= 4023, per=40.53%, avg=2367.60, stdev=932.93, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=5.01%, ctx=117, 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=4173KiB/s (4273kB/s), 417KiB/s-1782KiB/s (427kB/s-1825kB/s), io=20.0MiB (20.0MB), run=4022-4908msec WRITE: bw=5842KiB/s (5982kB/s), 1273KiB/s-2086KiB/s (1304kB/s-2136kB/s), io=28.0MiB (29.4MB), run=4022-4908msec 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=145262: Mon Aug 24 09:43:13 2026 read: IOPS=1, BW=5095KiB/s (5217kB/s)(12.0MiB/2412msec) clat (msec): min=583, max=1053, avg=793.88, stdev=239.00 lat (msec): min=583, max=1053, avg=793.88, stdev=239.00 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 7684, max= 8175, per=100.00%, avg=7929.50, stdev=347.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=17.13%, ctx=372, 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=145263: Mon Aug 24 09:43:13 2026 read: IOPS=0, BW=1620KiB/s (1659kB/s)(4096KiB/2528msec) clat (nsec): min=616273k, max=616273k, avg=616272620.00, stdev= 0.00 lat (nsec): min=616276k, max=616276k, avg=616275619.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 7684, max= 7684, per=100.00%, avg=7684.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3241KiB/s (3318kB/s)(8192KiB/2528msec); 0 zone resets clat (msec): min=505, max=1317, avg=911.49, stdev=574.40 lat (msec): min=506, max=1318, avg=912.55, stdev=574.05 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=[ 1318], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8175, max= 8175, per=91.27%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.04%, sys=8.15%, ctx=191, 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=145264: Mon Aug 24 09:43:13 2026 write: IOPS=0, BW=3359KiB/s (3440kB/s)(12.0MiB/3658msec); 0 zone resets clat (msec): min=243, max=2252, avg=1189.17, stdev=1009.47 lat (msec): min=244, max=2254, avg=1190.33, stdev=1009.93 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 8062, max= 8062, per=90.01%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.05%, sys=6.23%, ctx=66, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145265: Mon Aug 24 09:43:13 2026 write: IOPS=1, BW=4665KiB/s (4777kB/s)(12.0MiB/2634msec); 0 zone resets clat (msec): min=386, max=1418, avg=869.68, stdev=519.25 lat (msec): min=386, max=1420, avg=870.55, stdev=519.90 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7366, max= 8175, per=86.75%, avg=7770.50, stdev=572.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.43%, ctx=48, 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=6481KiB/s (6637kB/s), 1620KiB/s-5095KiB/s (1659kB/s-5217kB/s), io=16.0MiB (16.8MB), run=2412-2528msec WRITE: bw=8958KiB/s (9173kB/s), 3241KiB/s-4665KiB/s (3318kB/s-4777kB/s), io=32.0MiB (33.6MB), run=2528-3658msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145267: Mon Aug 24 09:43:13 2026 read: IOPS=1, BW=6793KiB/s (6956kB/s)(12.0MiB/1809msec) clat (msec): min=428, max=932, avg=602.68, stdev=285.70 lat (msec): min=428, max=932, avg=602.68, stdev=285.70 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, 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=0.00%, sys=6.25%, ctx=57, 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=145268: Mon Aug 24 09:43:13 2026 read: IOPS=0, BW=1471KiB/s (1507kB/s)(4096KiB/2784msec) clat (nsec): min=753914k, max=753914k, avg=753913675.00, stdev= 0.00 lat (nsec): min=753919k, max=753919k, avg=753919229.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2943KiB/s (3013kB/s)(8192KiB/2784msec); 0 zone resets clat (msec): min=490, max=1531, avg=1010.96, stdev=736.62 lat (msec): min=490, max=1532, avg=1011.37, stdev=736.63 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8094, max= 8094, per=68.77%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.57%, ctx=67, 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=145269: Mon Aug 24 09:43:13 2026 write: IOPS=1, BW=5109KiB/s (5232kB/s)(12.0MiB/2405msec); 0 zone resets clat (msec): min=257, max=1114, avg=798.35, stdev=470.46 lat (msec): min=260, max=1115, avg=799.48, stdev=469.16 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 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= 8159, max= 8159, per=69.32%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.74%, ctx=32, 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=145270: Mon Aug 24 09:43:13 2026 write: IOPS=1, BW=5493KiB/s (5625kB/s)(12.0MiB/2237msec); 0 zone resets clat (msec): min=287, max=1146, avg=745.02, stdev=432.45 lat (msec): min=287, max=1147, avg=745.38, stdev=432.33 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8143, max= 8175, per=69.32%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.03%, ctx=44, 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=5885KiB/s (6026kB/s), 1471KiB/s-6793KiB/s (1507kB/s-6956kB/s), io=16.0MiB (16.8MB), run=1809-2784msec WRITE: bw=11.5MiB/s (12.1MB/s), 2943KiB/s-5493KiB/s (3013kB/s-5625kB/s), io=32.0MiB (33.6MB), run=2237-2784msec