== sanity test 398b: DIO and buffer IO race ============== 03:04:21 (1768550661) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.89335 s, 8.5 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=149024: Fri Jan 16 03:06:45 2026 read: IOPS=11, BW=47.9KiB/s (49.0kB/s)(5992KiB/125206msec) clat (usec): min=87, max=658763, avg=40854.60, stdev=36711.11 lat (usec): min=88, max=658764, avg=40855.84, stdev=36711.11 clat percentiles (usec): | 1.00th=[ 128], 5.00th=[ 159], 10.00th=[ 200], 20.00th=[ 16909], | 30.00th=[ 22152], 40.00th=[ 28181], 50.00th=[ 33817], 60.00th=[ 40633], | 70.00th=[ 50070], 80.00th=[ 62653], 90.00th=[ 79168], 95.00th=[100140], | 99.00th=[160433], 99.50th=[191890], 99.90th=[329253], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 128, per=25.10%, avg=47.70, stdev=20.39, samples=244 iops : min= 1, max= 32, avg=11.27, stdev= 5.14, samples=244 write: IOPS=12, BW=50.3KiB/s (51.5kB/s)(6296KiB/125206msec); 0 zone resets clat (usec): min=777, max=574371, avg=40362.08, stdev=43282.53 lat (usec): min=779, max=574373, avg=40370.73, stdev=43285.95 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1123], 10.00th=[ 1270], 20.00th=[ 3163], | 30.00th=[ 7504], 40.00th=[ 17695], 50.00th=[ 28705], 60.00th=[ 42206], | 70.00th=[ 54264], 80.00th=[ 69731], 90.00th=[ 94897], 95.00th=[122160], | 99.00th=[177210], 99.50th=[191890], 99.90th=[299893], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 7, max= 143, per=25.15%, avg=50.05, stdev=21.58, samples=245 iops : min= 1, max= 35, avg=11.86, stdev= 5.43, samples=245 lat (usec) : 100=0.07%, 250=5.14%, 500=0.59%, 750=0.26%, 1000=0.42% lat (msec) : 2=7.52%, 4=3.84%, 10=6.12%, 20=9.99%, 50=34.08% lat (msec) : 100=25.36%, 250=6.45%, 500=0.10%, 750=0.07% cpu : usr=0.08%, sys=5.14%, ctx=6059, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149025: Fri Jan 16 03:06:45 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(5940KiB/125298msec) clat (usec): min=96, max=613034, avg=39632.96, stdev=34900.69 lat (usec): min=98, max=613037, avg=39634.23, stdev=34900.70 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 155], 10.00th=[ 202], 20.00th=[ 16712], | 30.00th=[ 22938], 40.00th=[ 27919], 50.00th=[ 33817], 60.00th=[ 39584], | 70.00th=[ 47449], 80.00th=[ 58983], 90.00th=[ 80217], 95.00th=[ 95945], | 99.00th=[128451], 99.50th=[152044], 99.90th=[488637], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 127, per=24.88%, avg=47.26, stdev=21.30, samples=246 iops : min= 1, max= 31, avg=11.16, stdev= 5.35, samples=246 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(6348KiB/125298msec); 0 zone resets clat (usec): min=799, max=486326, avg=41582.76, stdev=45152.34 lat (usec): min=800, max=486328, avg=41584.44, stdev=45152.41 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1139], 10.00th=[ 1254], 20.00th=[ 3294], | 30.00th=[ 7963], 40.00th=[ 17433], 50.00th=[ 30540], 60.00th=[ 42206], | 70.00th=[ 55313], 80.00th=[ 70779], 90.00th=[ 99091], 95.00th=[124257], | 99.00th=[196084], 99.50th=[238027], 99.90th=[371196], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 7, max= 143, per=25.49%, avg=50.73, stdev=24.13, samples=245 iops : min= 1, max= 35, avg=12.03, stdev= 6.08, samples=245 lat (usec) : 100=0.03%, 250=5.05%, 500=0.39%, 750=0.16%, 1000=0.36% lat (msec) : 2=7.98%, 4=3.45%, 10=6.32%, 20=9.24%, 50=36.62% lat (msec) : 100=23.18%, 250=6.97%, 500=0.23%, 750=0.03% cpu : usr=0.07%, sys=5.10%, ctx=6110, 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=149027: Fri Jan 16 03:06:45 2026 read: IOPS=12, BW=48.6KiB/s (49.7kB/s)(6028KiB/124105msec) clat (usec): min=91, max=604291, avg=38793.00, stdev=34577.81 lat (usec): min=92, max=604293, avg=38795.84, stdev=34577.90 clat percentiles (usec): | 1.00th=[ 123], 5.00th=[ 161], 10.00th=[ 206], 20.00th=[ 16909], | 30.00th=[ 22152], 40.00th=[ 27132], 50.00th=[ 32375], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[ 91751], | 99.00th=[137364], 99.50th=[173016], 99.90th=[346031], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 7, max= 111, per=25.58%, avg=48.60, stdev=21.23, samples=242 iops : min= 1, max= 27, avg=11.49, stdev= 5.33, samples=242 write: IOPS=12, BW=50.4KiB/s (51.7kB/s)(6260KiB/124105msec); 0 zone resets clat (usec): min=612, max=604710, avg=41630.91, stdev=47516.53 lat (usec): min=613, max=604711, avg=41634.96, stdev=47518.44 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1139], 10.00th=[ 1270], 20.00th=[ 2966], | 30.00th=[ 7635], 40.00th=[ 16909], 50.00th=[ 30278], 60.00th=[ 40633], | 70.00th=[ 54264], 80.00th=[ 69731], 90.00th=[ 98042], 95.00th=[129500], | 99.00th=[183501], 99.50th=[202376], 99.90th=[599786], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 7, max= 125, per=25.01%, avg=49.78, stdev=21.59, samples=245 iops : min= 1, max= 31, avg=11.80, stdev= 5.45, samples=245 lat (usec) : 100=0.07%, 250=5.11%, 500=0.39%, 750=0.29%, 1000=0.52% lat (msec) : 2=7.68%, 4=4.20%, 10=5.79%, 20=9.90%, 50=35.77% lat (msec) : 100=23.73%, 250=6.32%, 500=0.13%, 750=0.10% cpu : usr=0.08%, sys=5.14%, ctx=6100, 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=149029: Fri Jan 16 03:06:45 2026 read: IOPS=12, BW=48.0KiB/s (49.2kB/s)(6052KiB/126065msec) clat (usec): min=102, max=419270, avg=39401.87, stdev=33614.95 lat (usec): min=103, max=419271, avg=39404.43, stdev=33615.03 clat percentiles (usec): | 1.00th=[ 123], 5.00th=[ 155], 10.00th=[ 194], 20.00th=[ 16057], | 30.00th=[ 21890], 40.00th=[ 27132], 50.00th=[ 32900], 60.00th=[ 40109], | 70.00th=[ 49546], 80.00th=[ 60556], 90.00th=[ 79168], 95.00th=[ 94897], | 99.00th=[147850], 99.50th=[193987], 99.90th=[346031], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 120, per=25.47%, avg=48.40, stdev=21.88, samples=244 iops : min= 1, max= 30, avg=11.45, stdev= 5.52, samples=244 write: IOPS=12, BW=49.5KiB/s (50.7kB/s)(6236KiB/126065msec); 0 zone resets clat (usec): min=811, max=730220, avg=42318.80, stdev=47624.94 lat (usec): min=813, max=730223, avg=42324.14, stdev=47623.62 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1156], 10.00th=[ 1270], 20.00th=[ 3425], | 30.00th=[ 7635], 40.00th=[ 18482], 50.00th=[ 30540], 60.00th=[ 42730], | 70.00th=[ 55313], 80.00th=[ 71828], 90.00th=[103285], 95.00th=[125305], | 99.00th=[193987], 99.50th=[233833], 99.90th=[396362], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 7, max= 134, per=24.68%, avg=49.11, stdev=22.14, samples=247 iops : min= 1, max= 33, avg=11.63, stdev= 5.57, samples=247 lat (usec) : 250=5.70%, 500=0.72%, 750=0.13%, 1000=0.49% lat (msec) : 2=7.45%, 4=3.68%, 10=6.05%, 20=10.16%, 50=33.66% lat (msec) : 100=24.35%, 250=7.36%, 500=0.23%, 750=0.03% cpu : usr=0.09%, sys=5.12%, ctx=6179, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=190KiB/s (195kB/s), 47.4KiB/s-48.6KiB/s (48.5kB/s-49.7kB/s), io=23.4MiB (24.6MB), run=124105-126065msec WRITE: bw=199KiB/s (204kB/s), 49.5KiB/s-50.7KiB/s (50.7kB/s-51.9kB/s), io=24.6MiB (25.7MB), run=124105-126065msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149023: Fri Jan 16 03:09:07 2026 read: IOPS=5, BW=22.6KiB/s (23.1kB/s)(5992KiB/265323msec) clat (msec): min=4, max=663, avg=33.36, stdev=37.18 lat (msec): min=4, max=663, avg=33.36, stdev=37.18 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 47], 90.00th=[ 72], 95.00th=[ 95], | 99.00th=[ 167], 99.50th=[ 243], 99.90th=[ 321], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 102, per=28.00%, avg=24.92, stdev=17.43, samples=465 iops : min= 1, max= 25, avg= 5.60, stdev= 4.42, samples=465 write: IOPS=5, BW=23.7KiB/s (24.3kB/s)(6296KiB/265323msec); 0 zone resets clat (msec): min=35, max=745, avg=136.53, stdev=68.84 lat (msec): min=35, max=745, avg=136.54, stdev=68.84 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 85], | 30.00th=[ 97], 40.00th=[ 108], 50.00th=[ 121], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 178], 90.00th=[ 220], 95.00th=[ 264], | 99.00th=[ 376], 99.50th=[ 409], 99.90th=[ 667], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 55, per=25.17%, avg=23.41, stdev=10.58, samples=518 iops : min= 1, max= 13, avg= 5.22, stdev= 2.72, samples=518 lat (msec) : 10=4.46%, 20=18.03%, 50=18.23%, 100=22.98%, 250=32.88% lat (msec) : 500=3.22%, 750=0.20% cpu : usr=0.04%, sys=1.05%, ctx=5213, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149026: Fri Jan 16 03:09:07 2026 read: IOPS=5, BW=22.2KiB/s (22.7kB/s)(5940KiB/267479msec) clat (msec): min=4, max=614, avg=33.53, stdev=40.65 lat (msec): min=4, max=614, avg=33.53, stdev=40.65 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 45], 90.00th=[ 77], 95.00th=[ 100], | 99.00th=[ 178], 99.50th=[ 239], 99.90th=[ 600], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 7, max= 104, per=28.51%, avg=25.38, stdev=16.92, samples=452 iops : min= 1, max= 26, avg= 5.72, stdev= 4.28, samples=452 write: IOPS=5, BW=23.7KiB/s (24.3kB/s)(6348KiB/267479msec); 0 zone resets clat (msec): min=32, max=668, avg=136.90, stdev=68.20 lat (msec): min=32, max=668, avg=136.91, stdev=68.20 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 71], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 109], 50.00th=[ 120], 60.00th=[ 134], | 70.00th=[ 157], 80.00th=[ 182], 90.00th=[ 226], 95.00th=[ 271], | 99.00th=[ 372], 99.50th=[ 409], 99.90th=[ 531], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 64, per=24.94%, avg=23.19, stdev=10.68, samples=526 iops : min= 1, max= 16, avg= 5.17, stdev= 2.75, samples=526 lat (msec) : 10=5.08%, 20=18.55%, 50=17.22%, 100=22.14%, 250=33.30% lat (msec) : 500=3.55%, 750=0.16% cpu : usr=0.04%, sys=1.13%, ctx=5165, 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=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=149028: Fri Jan 16 03:09:07 2026 read: IOPS=5, BW=22.7KiB/s (23.3kB/s)(6028KiB/265473msec) clat (msec): min=4, max=354, avg=34.42, stdev=33.78 lat (msec): min=4, max=354, avg=34.42, stdev=33.78 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 49], 90.00th=[ 80], 95.00th=[ 110], | 99.00th=[ 148], 99.50th=[ 186], 99.90th=[ 296], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 96, per=28.27%, avg=25.16, stdev=17.23, samples=462 iops : min= 1, max= 24, avg= 5.67, stdev= 4.34, samples=462 write: IOPS=5, BW=23.6KiB/s (24.1kB/s)(6260KiB/265473msec); 0 zone resets clat (msec): min=20, max=750, avg=136.20, stdev=70.71 lat (msec): min=20, max=750, avg=136.21, stdev=70.71 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 69], 20.00th=[ 83], | 30.00th=[ 94], 40.00th=[ 106], 50.00th=[ 120], 60.00th=[ 134], | 70.00th=[ 153], 80.00th=[ 180], 90.00th=[ 224], 95.00th=[ 271], | 99.00th=[ 359], 99.50th=[ 477], 99.90th=[ 659], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 55, per=25.12%, avg=23.36, stdev=10.69, samples=515 iops : min= 1, max= 13, avg= 5.21, stdev= 2.75, samples=515 lat (msec) : 10=4.33%, 20=17.77%, 50=18.13%, 100=23.76%, 250=32.55% lat (msec) : 500=3.22%, 750=0.20%, 1000=0.03% cpu : usr=0.03%, sys=1.10%, ctx=5073, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149030: Fri Jan 16 03:09:07 2026 read: IOPS=5, BW=22.8KiB/s (23.4kB/s)(6052KiB/265281msec) clat (msec): min=4, max=386, avg=33.95, stdev=35.79 lat (msec): min=4, max=386, avg=33.95, stdev=35.79 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 47], 90.00th=[ 78], 95.00th=[ 110], | 99.00th=[ 174], 99.50th=[ 199], 99.90th=[ 309], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 103, per=28.97%, avg=25.79, stdev=18.07, samples=454 iops : min= 1, max= 25, avg= 5.82, stdev= 4.56, samples=454 write: IOPS=5, BW=23.5KiB/s (24.1kB/s)(6236KiB/265281msec); 0 zone resets clat (msec): min=28, max=718, avg=136.93, stdev=70.56 lat (msec): min=28, max=718, avg=136.93, stdev=70.56 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 85], | 30.00th=[ 96], 40.00th=[ 107], 50.00th=[ 120], 60.00th=[ 134], | 70.00th=[ 153], 80.00th=[ 180], 90.00th=[ 228], 95.00th=[ 271], | 99.00th=[ 368], 99.50th=[ 430], 99.90th=[ 709], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 63, per=25.02%, avg=23.27, stdev=11.00, samples=516 iops : min= 1, max= 15, avg= 5.19, stdev= 2.83, samples=516 lat (msec) : 10=5.83%, 20=17.55%, 50=17.29%, 100=22.14%, 250=33.56% lat (msec) : 500=3.48%, 750=0.16% cpu : usr=0.04%, sys=1.09%, ctx=5106, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=89.8KiB/s (91.9kB/s), 22.2KiB/s-22.8KiB/s (22.7kB/s-23.4kB/s), io=23.4MiB (24.6MB), run=265281-267479msec WRITE: bw=93.0KiB/s (96.2kB/s), 23.5KiB/s-23.7KiB/s (24.1kB/s-24.3kB/s), io=24.6MiB (25.7MB), run=265281-267479msec 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=149092: Fri Jan 16 03:09:42 2026 read: IOPS=14, BW=235KiB/s (240kB/s)(5920KiB/25219msec) clat (usec): min=110, max=161029, avg=32727.71, stdev=28012.95 lat (usec): min=110, max=161031, avg=32729.85, stdev=28012.64 clat percentiles (usec): | 1.00th=[ 127], 5.00th=[ 149], 10.00th=[ 165], 20.00th=[ 1045], | 30.00th=[ 18220], 40.00th=[ 24511], 50.00th=[ 30016], 60.00th=[ 34341], | 70.00th=[ 41157], 80.00th=[ 52691], 90.00th=[ 66323], 95.00th=[ 85459], | 99.00th=[137364], 99.50th=[147850], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 31, max= 497, per=24.35%, avg=231.10, stdev=105.72, samples=49 iops : min= 1, max= 31, avg=13.73, stdev= 6.65, samples=49 write: IOPS=15, BW=253KiB/s (259kB/s)(6368KiB/25219msec); 0 zone resets clat (usec): min=1180, max=281695, avg=32169.38, stdev=39055.00 lat (usec): min=1183, max=281697, avg=32173.81, stdev=39057.10 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1614], 10.00th=[ 1860], 20.00th=[ 4490], | 30.00th=[ 7111], 40.00th=[ 12780], 50.00th=[ 18744], 60.00th=[ 26084], | 70.00th=[ 37487], 80.00th=[ 54789], 90.00th=[ 76022], 95.00th=[ 99091], | 99.00th=[196084], 99.50th=[229639], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 29, max= 541, per=25.16%, avg=251.39, stdev=114.29, samples=49 iops : min= 1, max= 33, avg=14.98, stdev= 7.19, samples=49 lat (usec) : 250=7.81%, 500=1.43%, 750=0.13%, 1000=0.13% lat (msec) : 2=6.25%, 4=4.56%, 10=10.29%, 20=12.24%, 50=34.64% lat (msec) : 100=18.88%, 250=3.52%, 500=0.13% cpu : usr=0.06%, sys=6.33%, ctx=1427, 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=149093: Fri Jan 16 03:09:42 2026 read: IOPS=14, BW=235KiB/s (241kB/s)(5744KiB/24422msec) clat (usec): min=103, max=157806, avg=33988.35, stdev=28211.32 lat (usec): min=104, max=157807, avg=33998.53, stdev=28211.61 clat percentiles (usec): | 1.00th=[ 112], 5.00th=[ 147], 10.00th=[ 163], 20.00th=[ 355], | 30.00th=[ 20317], 40.00th=[ 26084], 50.00th=[ 31065], 60.00th=[ 35914], | 70.00th=[ 44303], 80.00th=[ 52167], 90.00th=[ 69731], 95.00th=[ 87557], | 99.00th=[141558], 99.50th=[145753], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 32, max= 510, per=24.81%, avg=235.44, stdev=99.12, samples=48 iops : min= 2, max= 31, avg=14.00, stdev= 6.19, samples=48 write: IOPS=16, BW=268KiB/s (274kB/s)(6544KiB/24422msec); 0 zone resets clat (usec): min=1411, max=190081, avg=29506.87, stdev=31606.12 lat (usec): min=1414, max=190083, avg=29508.94, stdev=31606.14 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1729], 10.00th=[ 2311], 20.00th=[ 4948], | 30.00th=[ 7570], 40.00th=[ 11600], 50.00th=[ 18744], 60.00th=[ 27395], | 70.00th=[ 35914], 80.00th=[ 50070], 90.00th=[ 70779], 95.00th=[ 90702], | 99.00th=[145753], 99.50th=[170918], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 93, max= 542, per=26.79%, avg=267.60, stdev=112.45, samples=48 iops : min= 5, max= 33, avg=16.00, stdev= 7.06, samples=48 lat (usec) : 250=8.20%, 500=1.30%, 750=0.52% lat (msec) : 2=4.95%, 4=4.82%, 10=10.68%, 20=10.81%, 50=36.85% lat (msec) : 100=18.36%, 250=3.52% cpu : usr=0.12%, sys=6.72%, ctx=1456, 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=149094: Fri Jan 16 03:09:42 2026 read: IOPS=15, BW=251KiB/s (257kB/s)(6256KiB/24883msec) clat (usec): min=104, max=182710, avg=31754.15, stdev=27381.21 lat (usec): min=104, max=182712, avg=31755.34, stdev=27381.21 clat percentiles (usec): | 1.00th=[ 114], 5.00th=[ 145], 10.00th=[ 163], 20.00th=[ 239], | 30.00th=[ 17695], 40.00th=[ 23725], 50.00th=[ 29492], 60.00th=[ 34866], | 70.00th=[ 40633], 80.00th=[ 52691], 90.00th=[ 67634], 95.00th=[ 76022], | 99.00th=[128451], 99.50th=[156238], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 32, max= 446, per=27.14%, avg=257.56, stdev=102.79, samples=48 iops : min= 2, max= 27, avg=15.38, stdev= 6.45, samples=48 write: IOPS=15, BW=242KiB/s (248kB/s)(6032KiB/24883msec); 0 zone resets clat (usec): min=1326, max=250068, avg=32274.95, stdev=38575.38 lat (usec): min=1329, max=250071, avg=32277.18, stdev=38575.46 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1631], 10.00th=[ 2212], 20.00th=[ 4228], | 30.00th=[ 7111], 40.00th=[ 10290], 50.00th=[ 18220], 60.00th=[ 25297], | 70.00th=[ 40109], 80.00th=[ 56361], 90.00th=[ 74974], 95.00th=[106431], | 99.00th=[196084], 99.50th=[204473], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 29, max= 510, per=24.19%, avg=241.61, stdev=105.10, samples=49 iops : min= 1, max= 31, avg=14.37, stdev= 6.57, samples=49 lat (usec) : 250=10.29%, 500=0.91%, 750=0.39%, 1000=0.13% lat (msec) : 2=4.69%, 4=5.34%, 10=10.55%, 20=10.94%, 50=33.59% lat (msec) : 100=19.66%, 250=3.39%, 500=0.13% cpu : usr=0.09%, sys=6.02%, ctx=1393, 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=149095: Fri Jan 16 03:09:42 2026 read: IOPS=14, BW=240KiB/s (246kB/s)(6032KiB/25157msec) clat (usec): min=109, max=249222, avg=32353.05, stdev=33855.62 lat (usec): min=109, max=249223, avg=32354.30, stdev=33855.59 clat percentiles (usec): | 1.00th=[ 119], 5.00th=[ 147], 10.00th=[ 157], 20.00th=[ 186], | 30.00th=[ 4293], 40.00th=[ 22414], 50.00th=[ 27132], 60.00th=[ 33817], | 70.00th=[ 42206], 80.00th=[ 51643], 90.00th=[ 71828], 95.00th=[ 86508], | 99.00th=[149947], 99.50th=[219153], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 440, per=25.60%, avg=242.94, stdev=94.11, samples=48 iops : min= 1, max= 27, avg=14.46, stdev= 5.87, samples=48 write: IOPS=15, BW=249KiB/s (255kB/s)(6256KiB/25157msec); 0 zone resets clat (usec): min=1337, max=226610, avg=32313.04, stdev=36727.15 lat (usec): min=1338, max=226615, avg=32315.23, stdev=36727.19 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1647], 10.00th=[ 2147], 20.00th=[ 4817], | 30.00th=[ 7701], 40.00th=[ 12256], 50.00th=[ 18220], 60.00th=[ 27919], | 70.00th=[ 40633], 80.00th=[ 55837], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[179307], 99.50th=[187696], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 29, max= 479, per=24.76%, avg=247.35, stdev=112.38, samples=49 iops : min= 1, max= 29, avg=14.71, stdev= 7.03, samples=49 lat (usec) : 250=11.46%, 500=1.56%, 750=0.52% lat (msec) : 2=5.47%, 4=4.30%, 10=10.55%, 20=10.94%, 50=32.55% lat (msec) : 100=17.71%, 250=4.95% cpu : usr=0.09%, sys=6.06%, ctx=1383, 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=950KiB/s (973kB/s), 235KiB/s-251KiB/s (240kB/s-257kB/s), io=23.4MiB (24.5MB), run=24422-25219msec WRITE: bw=999KiB/s (1023kB/s), 242KiB/s-268KiB/s (248kB/s-274kB/s), io=24.6MiB (25.8MB), run=24422-25219msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149088: Fri Jan 16 03:10:26 2026 read: IOPS=5, BW=85.0KiB/s (88.1kB/s)(5920KiB/68841msec) clat (msec): min=6, max=194, avg=37.39, stdev=34.21 lat (msec): min=6, max=194, avg=37.39, stdev=34.21 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 52], 90.00th=[ 70], 95.00th=[ 112], | 99.00th=[ 190], 99.50th=[ 192], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 30, max= 383, per=27.29%, avg=94.43, stdev=58.64, samples=123 iops : min= 1, max= 23, avg= 5.19, stdev= 3.77, samples=123 write: IOPS=5, BW=92.5KiB/s (94.7kB/s)(6368KiB/68841msec); 0 zone resets clat (msec): min=41, max=497, avg=138.02, stdev=62.76 lat (msec): min=41, max=497, avg=138.02, stdev=62.76 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 65], 10.00th=[ 80], 20.00th=[ 91], | 30.00th=[ 104], 40.00th=[ 113], 50.00th=[ 124], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 176], 90.00th=[ 215], 95.00th=[ 262], | 99.00th=[ 393], 99.50th=[ 426], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 28, max= 160, per=25.26%, avg=91.94, stdev=35.79, samples=136 iops : min= 1, max= 10, avg= 5.01, stdev= 2.36, samples=136 lat (msec) : 10=2.73%, 20=14.32%, 50=21.09%, 100=21.48%, 250=37.24% lat (msec) : 500=3.12% cpu : usr=0.05%, sys=1.35%, ctx=1461, 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=149089: Fri Jan 16 03:10:26 2026 read: IOPS=5, BW=83.1KiB/s (85.1kB/s)(5744KiB/69146msec) clat (msec): min=5, max=201, avg=38.21, stdev=34.03 lat (msec): min=5, max=201, avg=38.21, stdev=34.02 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 27], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 84], 95.00th=[ 117], | 99.00th=[ 178], 99.50th=[ 201], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 28, max= 320, per=27.38%, avg=94.73, stdev=59.32, samples=118 iops : min= 1, max= 20, avg= 5.19, stdev= 3.82, samples=118 write: IOPS=5, BW=94.6KiB/s (96.9kB/s)(6544KiB/69146msec); 0 zone resets clat (msec): min=36, max=489, avg=134.92, stdev=59.15 lat (msec): min=36, max=489, avg=134.92, stdev=59.16 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 66], 10.00th=[ 75], 20.00th=[ 89], | 30.00th=[ 99], 40.00th=[ 111], 50.00th=[ 123], 60.00th=[ 136], | 70.00th=[ 155], 80.00th=[ 176], 90.00th=[ 209], 95.00th=[ 245], | 99.00th=[ 317], 99.50th=[ 380], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 28, max= 224, per=26.30%, avg=95.74, stdev=36.57, samples=133 iops : min= 1, max= 14, avg= 5.26, stdev= 2.45, samples=133 lat (msec) : 10=4.04%, 20=14.19%, 50=17.32%, 100=25.26%, 250=36.72% lat (msec) : 500=2.47% cpu : usr=0.05%, sys=1.32%, ctx=1414, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149090: Fri Jan 16 03:10:26 2026 read: IOPS=5, BW=94.3KiB/s (96.5kB/s)(6256KiB/66368msec) clat (msec): min=7, max=240, avg=36.49, stdev=31.79 lat (msec): min=7, max=240, avg=36.49, stdev=31.79 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 69], 95.00th=[ 101], | 99.00th=[ 174], 99.50th=[ 222], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 318, per=29.96%, avg=103.67, stdev=70.62, samples=119 iops : min= 1, max= 19, avg= 5.75, stdev= 4.48, samples=119 write: IOPS=5, BW=90.9KiB/s (93.1kB/s)(6032KiB/66368msec); 0 zone resets clat (msec): min=31, max=436, avg=137.53, stdev=57.82 lat (msec): min=31, max=436, avg=137.53, stdev=57.82 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 72], 10.00th=[ 81], 20.00th=[ 92], | 30.00th=[ 104], 40.00th=[ 112], 50.00th=[ 125], 60.00th=[ 140], | 70.00th=[ 155], 80.00th=[ 174], 90.00th=[ 215], 95.00th=[ 253], | 99.00th=[ 342], 99.50th=[ 380], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 29, max= 188, per=25.01%, avg=91.05, stdev=33.06, samples=130 iops : min= 1, max= 11, avg= 4.95, stdev= 2.20, samples=130 lat (msec) : 10=1.69%, 20=15.89%, 50=22.79%, 100=20.70%, 250=36.07% lat (msec) : 500=2.86% cpu : usr=0.04%, sys=1.38%, ctx=1446, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149091: Fri Jan 16 03:10:26 2026 read: IOPS=5, BW=88.6KiB/s (90.7kB/s)(6032KiB/68095msec) clat (msec): min=6, max=196, avg=35.93, stdev=30.26 lat (msec): min=6, max=196, avg=35.93, stdev=30.26 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 31], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 73], 95.00th=[ 94], | 99.00th=[ 153], 99.50th=[ 194], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 29, max= 318, per=28.94%, avg=100.13, stdev=61.76, samples=117 iops : min= 1, max= 19, avg= 5.54, stdev= 3.92, samples=117 write: IOPS=5, BW=91.9KiB/s (94.1kB/s)(6256KiB/68095msec); 0 zone resets clat (msec): min=46, max=382, avg=138.82, stdev=60.12 lat (msec): min=46, max=382, avg=138.82, stdev=60.12 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 71], 10.00th=[ 82], 20.00th=[ 93], | 30.00th=[ 105], 40.00th=[ 115], 50.00th=[ 125], 60.00th=[ 136], | 70.00th=[ 150], 80.00th=[ 176], 90.00th=[ 213], 95.00th=[ 259], | 99.00th=[ 368], 99.50th=[ 376], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 29, max= 160, per=25.11%, avg=91.41, stdev=35.85, samples=134 iops : min= 1, max= 10, avg= 4.97, stdev= 2.36, samples=134 lat (msec) : 10=3.39%, 20=14.84%, 50=19.66%, 100=22.27%, 250=36.98% lat (msec) : 500=2.86% cpu : usr=0.03%, sys=1.31%, ctx=1408, 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=346KiB/s (355kB/s), 83.1KiB/s-94.3KiB/s (85.1kB/s-96.5kB/s), io=23.4MiB (24.5MB), run=66368-69146msec WRITE: bw=364KiB/s (373kB/s), 90.9KiB/s-94.6KiB/s (93.1kB/s-96.9kB/s), io=24.6MiB (25.8MB), run=66368-69146msec 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=149114: Fri Jan 16 03:10:42 2026 read: IOPS=1, BW=1302KiB/s (1333kB/s)(7168KiB/5505msec) clat (usec): min=789, max=3398.2k, avg=634356.27, stdev=1232627.09 lat (usec): min=789, max=3398.2k, avg=634357.40, stdev=1232626.96 clat percentiles (usec): | 1.00th=[ 791], 5.00th=[ 791], 10.00th=[ 791], | 20.00th=[ 1532], 30.00th=[ 137364], 40.00th=[ 137364], | 50.00th=[ 158335], 60.00th=[ 191890], 70.00th=[ 191890], | 80.00th=[ 549454], 90.00th=[3405775], 95.00th=[3405775], | 99.00th=[3405775], 99.50th=[3405775], 99.90th=[3405775], | 99.95th=[3405775], 99.99th=[3405775] bw ( KiB/s): min= 1771, max= 4023, per=67.65%, avg=2451.50, stdev=1053.85, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=930KiB/s (952kB/s)(5120KiB/5505msec); 0 zone resets clat (msec): min=65, max=239, avg=145.65, stdev=66.08 lat (msec): min=65, max=239, avg=145.81, stdev=66.20 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 66], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 157], 60.00th=[ 157], | 70.00th=[ 163], 80.00th=[ 163], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 1973, max= 4023, per=59.09%, avg=2998.00, stdev=1449.57, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 100=8.33%, 250=58.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.67%, ctx=611, 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=149115: Fri Jan 16 03:10:42 2026 read: IOPS=0, BW=362KiB/s (371kB/s)(2048KiB/5650msec) clat (usec): min=589, max=162742, avg=81666.13, stdev=114659.43 lat (usec): min=590, max=162744, avg=81667.81, stdev=114660.24 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 586], | 30.00th=[ 586], 40.00th=[ 586], 50.00th=[ 586], 60.00th=[162530], | 70.00th=[162530], 80.00th=[162530], 90.00th=[162530], 95.00th=[162530], | 99.00th=[162530], 99.50th=[162530], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 1686, max= 1984, per=50.63%, avg=1835.00, stdev=210.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1812KiB/s (1856kB/s)(10.0MiB/5650msec); 0 zone resets clat (msec): min=127, max=2274, avg=530.73, stdev=662.77 lat (msec): min=127, max=2274, avg=530.90, stdev=662.72 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 150], | 30.00th=[ 167], 40.00th=[ 226], 50.00th=[ 251], 60.00th=[ 262], | 70.00th=[ 338], 80.00th=[ 550], 90.00th=[ 969], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 1686, max= 6119, per=77.62%, avg=3938.50, stdev=2432.77, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 2.31, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.04%, sys=9.10%, ctx=110, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149118: Fri Jan 16 03:10:42 2026 read: IOPS=1, BW=1226KiB/s (1255kB/s)(6144KiB/5012msec) clat (usec): min=550, max=378443, avg=136502.07, stdev=138631.15 lat (usec): min=551, max=378444, avg=136503.17, stdev=138631.00 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[131597], 50.00th=[131597], 60.00th=[152044], | 70.00th=[156238], 80.00th=[156238], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 2027, max= 6119, per=100.00%, avg=4073.00, stdev=2893.48, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1226KiB/s (1255kB/s)(6144KiB/5012msec); 0 zone resets clat (msec): min=214, max=2906, avg=690.35, stdev=1086.00 lat (msec): min=214, max=2906, avg=690.45, stdev=1086.00 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1973, max= 3297, per=46.06%, avg=2337.00, stdev=640.76, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 250=50.00%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=7.96%, ctx=209, 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=149119: Fri Jan 16 03:10:42 2026 read: IOPS=0, BW=972KiB/s (995kB/s)(5120KiB/5267msec) clat (msec): min=3, max=290, avg=182.50, stdev=119.43 lat (msec): min=3, max=290, avg=182.50, stdev=119.43 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 121], 40.00th=[ 121], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 264], 80.00th=[ 264], 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= 3968, max= 3976, per=100.00%, avg=3972.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1361KiB/s (1394kB/s)(7168KiB/5267msec); 0 zone resets clat (msec): min=104, max=2128, avg=572.18, stdev=721.98 lat (msec): min=104, max=2128, avg=572.28, stdev=721.96 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 167], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 257], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 776], 90.00th=[ 2123], 95.00th=[ 2123], | 99.00th=[ 2123], 99.50th=[ 2123], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 2039, max= 4055, per=59.89%, avg=3039.00, stdev=1154.77, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 4=8.33%, 250=41.67%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.68%, ctx=206, 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=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=3625KiB/s (3712kB/s), 362KiB/s-1302KiB/s (371kB/s-1333kB/s), io=20.0MiB (20.0MB), run=5012-5650msec WRITE: bw=5075KiB/s (5196kB/s), 930KiB/s-1812KiB/s (952kB/s-1856kB/s), io=28.0MiB (29.4MB), run=5012-5650msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149112: Fri Jan 16 03:10:42 2026 read: IOPS=2, BW=2409KiB/s (2466kB/s)(7168KiB/2976msec) clat (msec): min=90, max=462, avg=210.96, stdev=143.44 lat (msec): min=90, max=462, avg=210.96, stdev=143.44 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 102], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 140], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 359], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 4000, max= 4954, per=100.00%, avg=4477.00, stdev=674.58, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1720KiB/s (1762kB/s)(5120KiB/2976msec); 0 zone resets clat (msec): min=185, max=461, avg=294.71, stdev=108.63 lat (msec): min=185, max=461, avg=294.80, stdev=108.61 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 2015, max= 4096, per=57.19%, avg=2711.33, stdev=1199.16, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=4.84%, ctx=49, 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=149113: Fri Jan 16 03:10:42 2026 read: IOPS=0, BW=364KiB/s (373kB/s)(2048KiB/5626msec) clat (msec): min=120, max=398, avg=259.59, stdev=196.33 lat (msec): min=120, max=398, avg=259.59, stdev=196.33 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 122], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 122], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 1600, max= 2048, per=53.87%, avg=1824.00, stdev=316.78, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1820KiB/s (1864kB/s)(10.0MiB/5626msec); 0 zone resets clat (msec): min=143, max=2265, avg=507.85, stdev=633.43 lat (msec): min=144, max=2265, avg=507.95, stdev=633.42 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 209], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 259], 60.00th=[ 288], | 70.00th=[ 326], 80.00th=[ 531], 90.00th=[ 584], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 2015, max= 4055, per=64.62%, avg=3063.60, stdev=1001.17, samples=5 iops : min= 1, max= 3, avg= 2.40, stdev= 0.89, samples=5 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=3.38%, ctx=82, 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=149116: Fri Jan 16 03:10:42 2026 read: IOPS=0, BW=1016KiB/s (1040kB/s)(6144KiB/6047msec) clat (msec): min=38, max=216, avg=146.71, stdev=73.04 lat (msec): min=38, max=216, avg=146.71, stdev=73.04 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 39], 10.00th=[ 39], 20.00th=[ 103], | 30.00th=[ 103], 40.00th=[ 114], 50.00th=[ 114], 60.00th=[ 199], | 70.00th=[ 211], 80.00th=[ 211], 90.00th=[ 218], 95.00th=[ 218], | 99.00th=[ 218], 99.50th=[ 218], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 2027, max= 4087, per=80.35%, avg=2720.67, stdev=1183.33, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=1016KiB/s (1040kB/s)(6144KiB/6047msec); 0 zone resets clat (msec): min=142, max=2410, avg=853.42, stdev=802.02 lat (msec): min=142, max=2411, avg=853.54, stdev=802.05 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 709], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 2000, max= 2048, per=42.70%, avg=2024.50, stdev=19.67, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 50=8.33%, 250=50.00%, 500=8.33%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.41%, ctx=176, 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=149117: Fri Jan 16 03:10:42 2026 read: IOPS=0, BW=960KiB/s (983kB/s)(5120KiB/5335msec) clat (msec): min=61, max=242, avg=154.83, stdev=64.09 lat (msec): min=61, max=242, avg=154.84, stdev=64.09 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 62], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 157], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 243], 95.00th=[ 243], | 99.00th=[ 243], 99.50th=[ 243], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 4031, max= 4096, per=100.00%, avg=4063.50, stdev=45.96, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1344KiB/s (1376kB/s)(7168KiB/5335msec); 0 zone resets clat (msec): min=132, max=2556, avg=643.87, stdev=860.14 lat (msec): min=132, max=2556, avg=643.96, stdev=860.12 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 178], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 342], 60.00th=[ 485], | 70.00th=[ 485], 80.00th=[ 600], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 2917, max= 4055, per=77.14%, avg=3657.33, stdev=641.74, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.42%, ctx=49, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3387KiB/s (3468kB/s), 364KiB/s-2409KiB/s (373kB/s-2466kB/s), io=20.0MiB (20.0MB), run=2976-6047msec WRITE: bw=4742KiB/s (4855kB/s), 1016KiB/s-1820KiB/s (1040kB/s-1864kB/s), io=28.0MiB (29.4MB), run=2976-6047msec 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=149126: Fri Jan 16 03:11:01 2026 read: IOPS=0, BW=3105KiB/s (3179kB/s)(12.0MiB/3958msec) clat (msec): min=1158, max=1219, avg=1184.70, stdev=31.40 lat (msec): min=1158, max=1219, avg=1184.70, stdev=31.40 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1217], 80.00th=[ 1217], 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= 7846, max= 8175, per=100.00%, avg=8010.50, stdev=232.64, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=10.18%, ctx=368, 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=149128: Fri Jan 16 03:11:01 2026 read: IOPS=0, BW=1024KiB/s (1048kB/s)(4096KiB/4001msec) clat (nsec): min=1277.4M, max=1277.4M, avg=1277429265.00, stdev= 0.00 lat (nsec): min=1277.4M, max=1277.4M, avg=1277432528.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1284], 5.00th=[ 1284], 10.00th=[ 1284], 20.00th=[ 1284], | 30.00th=[ 1284], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7728, max= 7728, per=100.00%, avg=7728.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2047KiB/s (2097kB/s)(8192KiB/4001msec); 0 zone resets clat (msec): min=743, max=1873, avg=1308.30, stdev=798.94 lat (msec): min=743, max=1873, avg=1308.69, stdev=799.18 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 1871], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.05%, ctx=110, 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=149129: Fri Jan 16 03:11:01 2026 write: IOPS=0, BW=2406KiB/s (2463kB/s)(12.0MiB/5108msec); 0 zone resets clat (msec): min=667, max=2081, avg=1607.13, stdev=813.60 lat (msec): min=675, max=2083, avg=1610.39, stdev=809.74 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 2072], 50.00th=[ 2072], 60.00th=[ 2072], | 70.00th=[ 2089], 80.00th=[ 2089], 90.00th=[ 2089], 95.00th=[ 2089], | 99.00th=[ 2089], 99.50th=[ 2089], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2089] 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) : 750=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.92%, 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=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=149130: Fri Jan 16 03:11:01 2026 write: IOPS=0, BW=3243KiB/s (3321kB/s)(12.0MiB/3789msec); 0 zone resets clat (msec): min=471, max=2377, avg=1152.65, stdev=1063.30 lat (msec): min=473, max=2378, avg=1153.41, stdev=1062.85 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7846, max= 8000, per=100.00%, avg=7923.00, stdev=108.89, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.05%, sys=2.85%, 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 Run status group 0 (all jobs): READ: bw=4095KiB/s (4193kB/s), 1024KiB/s-3105KiB/s (1048kB/s-3179kB/s), io=16.0MiB (16.8MB), run=3958-4001msec WRITE: bw=6415KiB/s (6569kB/s), 2047KiB/s-3243KiB/s (2097kB/s-3321kB/s), io=32.0MiB (33.6MB), run=3789-5108msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149131: Fri Jan 16 03:11:01 2026 read: IOPS=0, BW=3218KiB/s (3295kB/s)(12.0MiB/3819msec) clat (msec): min=844, max=1594, avg=1250.60, stdev=378.95 lat (msec): min=844, max=1594, avg=1250.60, stdev=378.95 clat percentiles (msec): | 1.00th=[ 844], 5.00th=[ 844], 10.00th=[ 844], 20.00th=[ 844], | 30.00th=[ 844], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7831, max= 8094, per=100.00%, avg=7962.50, stdev=185.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.08%, sys=3.22%, ctx=50, 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=149132: Fri Jan 16 03:11:01 2026 read: IOPS=0, BW=819KiB/s (839kB/s)(4096KiB/5002msec) clat (nsec): min=1407.1M, max=1407.1M, avg=1407136319.00, stdev= 0.00 lat (nsec): min=1407.1M, max=1407.1M, avg=1407138595.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1401], 5.00th=[ 1401], 10.00th=[ 1401], 20.00th=[ 1401], | 30.00th=[ 1401], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1638KiB/s (1677kB/s)(8192KiB/5002msec); 0 zone resets clat (msec): min=1048, max=2437, avg=1743.15, stdev=982.17 lat (msec): min=1049, max=2438, avg=1743.55, stdev=982.18 clat percentiles (msec): | 1.00th=[ 1053], 5.00th=[ 1053], 10.00th=[ 1053], 20.00th=[ 1053], | 30.00th=[ 1053], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 2433], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.08%, sys=2.54%, ctx=45, 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=149133: Fri Jan 16 03:11:01 2026 write: IOPS=0, BW=2224KiB/s (2278kB/s)(12.0MiB/5524msec); 0 zone resets clat (msec): min=406, max=2776, avg=1804.81, stdev=1241.06 lat (msec): min=407, max=2776, avg=1805.19, stdev=1240.98 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 2232], 50.00th=[ 2232], 60.00th=[ 2232], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 8094, max= 8110, per=100.00%, avg=8102.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.05%, sys=2.21%, ctx=35, 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=149134: Fri Jan 16 03:11:01 2026 write: IOPS=0, BW=3128KiB/s (3203kB/s)(12.0MiB/3928msec); 0 zone resets clat (msec): min=511, max=2577, avg=1297.10, stdev=1118.60 lat (msec): min=511, max=2578, avg=1297.51, stdev=1118.60 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 2567], 80.00th=[ 2567], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 7831, max= 8159, per=100.00%, avg=7995.00, stdev=231.93, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.65%, ctx=41, 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=3275KiB/s (3354kB/s), 819KiB/s-3218KiB/s (839kB/s-3295kB/s), io=16.0MiB (16.8MB), run=3819-5002msec WRITE: bw=5932KiB/s (6074kB/s), 1638KiB/s-3128KiB/s (1677kB/s-3203kB/s), io=32.0MiB (33.6MB), run=3928-5524msec