== sanity test 398b: DIO and buffer IO race ============== 17:32:41 (1786570361) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.28713 s, 15.3 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=180638: Wed Aug 12 17:34:06 2026 read: IOPS=20, BW=80.6KiB/s (82.5kB/s)(5992KiB/74336msec) clat (usec): min=39, max=115691, avg=26898.50, stdev=15844.53 lat (usec): min=39, max=115691, avg=26900.25, stdev=15844.46 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 8160], 10.00th=[ 11338], 20.00th=[ 14484], | 30.00th=[ 17433], 40.00th=[ 20579], 50.00th=[ 23987], 60.00th=[ 27919], | 70.00th=[ 31851], 80.00th=[ 38011], 90.00th=[ 46924], 95.00th=[ 54789], | 99.00th=[ 79168], 99.50th=[ 98042], 99.90th=[111674], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 7, max= 143, per=25.06%, avg=79.95, stdev=24.39, samples=147 iops : min= 1, max= 35, avg=19.44, stdev= 6.09, samples=147 write: IOPS=21, BW=84.7KiB/s (86.7kB/s)(6296KiB/74336msec); 0 zone resets clat (usec): min=765, max=452608, avg=21438.54, stdev=22318.01 lat (usec): min=767, max=452609, avg=21439.91, stdev=22318.39 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1647], 10.00th=[ 2147], 20.00th=[ 3785], | 30.00th=[ 6521], 40.00th=[ 11863], 50.00th=[ 17171], 60.00th=[ 21365], | 70.00th=[ 26870], 80.00th=[ 34341], 90.00th=[ 49021], 95.00th=[ 60031], | 99.00th=[ 83362], 99.50th=[ 91751], 99.90th=[168821], 99.95th=[450888], | 99.99th=[450888] bw ( KiB/s): min= 23, max= 198, per=25.13%, avg=83.93, stdev=27.17, samples=147 iops : min= 5, max= 49, avg=20.44, stdev= 6.83, samples=147 lat (usec) : 50=0.23%, 100=1.17%, 250=0.52%, 500=0.07%, 1000=0.10% lat (msec) : 2=4.30%, 4=6.71%, 10=9.15%, 20=25.55%, 50=43.42% lat (msec) : 100=8.37%, 250=0.39%, 500=0.03% cpu : usr=0.11%, sys=11.73%, ctx=7579, 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=180639: Wed Aug 12 17:34:06 2026 read: IOPS=20, BW=80.0KiB/s (82.9kB/s)(5940KiB/73368msec) clat (usec): min=44, max=136409, avg=27089.05, stdev=15623.83 lat (usec): min=45, max=136410, avg=27089.97, stdev=15623.85 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 8979], 10.00th=[ 11731], 20.00th=[ 14746], | 30.00th=[ 17957], 40.00th=[ 20841], 50.00th=[ 24249], 60.00th=[ 28443], | 70.00th=[ 32637], 80.00th=[ 38536], 90.00th=[ 45351], 95.00th=[ 52691], | 99.00th=[ 84411], 99.50th=[ 96994], 99.90th=[123208], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 24, max= 127, per=25.18%, avg=80.34, stdev=20.64, samples=145 iops : min= 6, max= 31, avg=19.54, stdev= 5.16, samples=145 write: IOPS=21, BW=86.5KiB/s (88.6kB/s)(6348KiB/73368msec); 0 zone resets clat (usec): min=1077, max=477014, avg=20699.72, stdev=22443.27 lat (usec): min=1078, max=477015, avg=20700.89, stdev=22443.27 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1713], 10.00th=[ 2278], 20.00th=[ 3556], | 30.00th=[ 5735], 40.00th=[ 10290], 50.00th=[ 15664], 60.00th=[ 20317], | 70.00th=[ 26084], 80.00th=[ 33817], 90.00th=[ 46924], 95.00th=[ 58459], | 99.00th=[ 80217], 99.50th=[100140], 99.90th=[175113], 99.95th=[476054], | 99.99th=[476054] bw ( KiB/s): min= 31, max= 159, per=25.62%, avg=85.57, stdev=25.28, samples=145 iops : min= 7, max= 39, avg=20.86, stdev= 6.32, samples=145 lat (usec) : 50=0.07%, 100=0.98%, 250=0.46%, 500=0.13%, 1000=0.03% lat (msec) : 2=3.94%, 4=8.14%, 10=10.12%, 20=24.87%, 50=43.62% lat (msec) : 100=7.19%, 250=0.42%, 500=0.03% cpu : usr=0.10%, sys=11.85%, ctx=7449, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180640: Wed Aug 12 17:34:06 2026 read: IOPS=20, BW=80.2KiB/s (82.1kB/s)(6028KiB/75155msec) clat (usec): min=34, max=506484, avg=27307.77, stdev=21342.85 lat (usec): min=35, max=506485, avg=27310.17, stdev=21343.07 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 7963], 10.00th=[ 11207], 20.00th=[ 14484], | 30.00th=[ 17171], 40.00th=[ 19792], 50.00th=[ 23725], 60.00th=[ 27657], | 70.00th=[ 31851], 80.00th=[ 37487], 90.00th=[ 46924], 95.00th=[ 56361], | 99.00th=[ 89654], 99.50th=[105382], 99.90th=[183501], 99.95th=[505414], | 99.99th=[505414] bw ( KiB/s): min= 31, max= 191, per=24.99%, avg=79.73, stdev=24.48, samples=149 iops : min= 7, max= 47, avg=19.39, stdev= 6.11, samples=149 write: IOPS=20, BW=83.3KiB/s (85.3kB/s)(6260KiB/75155msec); 0 zone resets clat (usec): min=859, max=156655, avg=21528.61, stdev=19948.74 lat (usec): min=860, max=156656, avg=21530.89, stdev=19949.73 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1582], 10.00th=[ 2180], 20.00th=[ 3556], | 30.00th=[ 5997], 40.00th=[ 11863], 50.00th=[ 17171], 60.00th=[ 21627], | 70.00th=[ 28181], 80.00th=[ 36439], 90.00th=[ 48497], 95.00th=[ 58459], | 99.00th=[ 83362], 99.50th=[101188], 99.90th=[147850], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 8, max= 215, per=24.81%, avg=82.88, stdev=29.91, samples=149 iops : min= 2, max= 53, avg=20.17, stdev= 7.51, samples=149 lat (usec) : 50=0.13%, 100=1.40%, 250=0.52%, 1000=0.03% lat (msec) : 2=4.07%, 4=7.19%, 10=9.31%, 20=25.91%, 50=42.81% lat (msec) : 100=8.01%, 250=0.59%, 750=0.03% cpu : usr=0.09%, sys=11.39%, ctx=7582, 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=180641: Wed Aug 12 17:34:06 2026 read: IOPS=20, BW=82.4KiB/s (84.3kB/s)(6052KiB/73490msec) clat (usec): min=47, max=504775, avg=27014.74, stdev=19552.48 lat (usec): min=48, max=504776, avg=27015.63, stdev=19552.50 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 9241], 10.00th=[ 12256], 20.00th=[ 15139], | 30.00th=[ 17695], 40.00th=[ 20579], 50.00th=[ 23987], 60.00th=[ 27919], | 70.00th=[ 31589], 80.00th=[ 36439], 90.00th=[ 45351], 95.00th=[ 54789], | 99.00th=[ 82314], 99.50th=[ 90702], 99.90th=[103285], 99.95th=[505414], | 99.99th=[505414] bw ( KiB/s): min= 31, max= 142, per=25.71%, avg=82.01, stdev=20.54, samples=146 iops : min= 7, max= 35, avg=19.96, stdev= 5.18, samples=146 write: IOPS=21, BW=84.9KiB/s (86.9kB/s)(6236KiB/73490msec); 0 zone resets clat (usec): min=1130, max=146312, avg=20750.94, stdev=19220.50 lat (usec): min=1130, max=146314, avg=20753.90, stdev=19218.99 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1811], 10.00th=[ 2376], 20.00th=[ 3556], | 30.00th=[ 5735], 40.00th=[ 11207], 50.00th=[ 16057], 60.00th=[ 20841], | 70.00th=[ 27657], 80.00th=[ 35390], 90.00th=[ 46924], 95.00th=[ 56361], | 99.00th=[ 81265], 99.50th=[ 95945], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 24, max= 168, per=25.28%, avg=84.45, stdev=27.05, samples=146 iops : min= 6, max= 42, avg=20.58, stdev= 6.80, samples=146 lat (usec) : 50=0.13%, 100=1.17%, 250=0.42%, 500=0.03%, 750=0.03% lat (msec) : 2=3.35%, 4=8.40%, 10=8.59%, 20=26.30%, 50=44.34% lat (msec) : 100=6.90%, 250=0.29%, 750=0.03% cpu : usr=0.09%, sys=11.83%, ctx=7521, 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=319KiB/s (327kB/s), 80.2KiB/s-82.4KiB/s (82.1kB/s-84.3kB/s), io=23.4MiB (24.6MB), run=73368-75155msec WRITE: bw=335KiB/s (343kB/s), 83.3KiB/s-86.5KiB/s (85.3kB/s-88.6kB/s), io=24.6MiB (25.7MB), run=73368-75155msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180643: Wed Aug 12 17:34:27 2026 read: IOPS=15, BW=62.6KiB/s (64.1kB/s)(5992KiB/95764msec) clat (msec): min=4, max=528, avg=25.53, stdev=25.36 lat (msec): min=4, max=528, avg=25.53, stdev=25.36 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 38], 90.00th=[ 55], 95.00th=[ 74], | 99.00th=[ 102], 99.50th=[ 128], 99.90th=[ 167], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 7, max= 190, per=24.97%, avg=62.18, stdev=39.44, samples=190 iops : min= 1, max= 47, avg=14.96, stdev= 9.93, samples=190 write: IOPS=16, BW=65.7KiB/s (67.3kB/s)(6296KiB/95764msec); 0 zone resets clat (msec): min=7, max=203, avg=36.48, stdev=24.61 lat (msec): min=7, max=203, avg=36.48, stdev=24.61 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 71], 95.00th=[ 85], | 99.00th=[ 118], 99.50th=[ 146], 99.90th=[ 182], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 5, max= 191, per=25.14%, avg=65.37, stdev=38.63, samples=190 iops : min= 1, max= 47, avg=15.76, stdev= 9.72, samples=190 lat (msec) : 10=9.70%, 20=34.02%, 50=38.25%, 100=16.50%, 250=1.50% lat (msec) : 750=0.03% cpu : usr=0.07%, sys=5.00%, ctx=5383, 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=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=180644: Wed Aug 12 17:34:27 2026 read: IOPS=15, BW=61.7KiB/s (63.2kB/s)(5940KiB/96250msec) clat (msec): min=4, max=503, avg=25.35, stdev=25.34 lat (msec): min=4, max=503, avg=25.35, stdev=25.34 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 58], 95.00th=[ 73], | 99.00th=[ 103], 99.50th=[ 116], 99.90th=[ 194], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 5, max= 224, per=24.63%, avg=61.32, stdev=41.44, samples=191 iops : min= 1, max= 56, avg=14.75, stdev=10.44, samples=191 write: IOPS=16, BW=65.0KiB/s (67.5kB/s)(6348KiB/96250msec); 0 zone resets clat (msec): min=6, max=200, avg=36.87, stdev=25.75 lat (msec): min=6, max=200, avg=36.87, stdev=25.75 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 73], 95.00th=[ 87], | 99.00th=[ 129], 99.50th=[ 153], 99.90th=[ 192], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 11, max= 175, per=25.21%, avg=65.54, stdev=38.60, samples=191 iops : min= 2, max= 43, avg=15.80, stdev= 9.71, samples=191 lat (msec) : 10=10.06%, 20=34.05%, 50=37.86%, 100=15.98%, 250=2.02% lat (msec) : 750=0.03% cpu : usr=0.08%, sys=4.87%, ctx=5437, 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=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=180645: Wed Aug 12 17:34:27 2026 read: IOPS=15, BW=62.6KiB/s (64.1kB/s)(6028KiB/96369msec) clat (msec): min=4, max=178, avg=25.74, stdev=22.30 lat (msec): min=4, max=178, avg=25.74, stdev=22.30 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 39], 90.00th=[ 58], 95.00th=[ 74], | 99.00th=[ 100], 99.50th=[ 116], 99.90th=[ 169], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 15, max= 198, per=25.23%, avg=62.81, stdev=38.16, samples=189 iops : min= 3, max= 49, avg=15.12, stdev= 9.61, samples=189 write: IOPS=16, BW=64.0KiB/s (66.5kB/s)(6260KiB/96369msec); 0 zone resets clat (msec): min=7, max=504, avg=36.73, stdev=27.82 lat (msec): min=7, max=504, avg=36.73, stdev=27.82 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 55], 90.00th=[ 72], 95.00th=[ 87], | 99.00th=[ 125], 99.50th=[ 146], 99.90th=[ 184], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 11, max= 176, per=24.79%, avg=64.45, stdev=40.16, samples=191 iops : min= 2, max= 44, avg=15.53, stdev=10.10, samples=191 lat (msec) : 10=9.93%, 20=33.85%, 50=37.89%, 100=16.50%, 250=1.79% lat (msec) : 750=0.03% cpu : usr=0.06%, sys=4.97%, ctx=5299, 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=180646: Wed Aug 12 17:34:27 2026 read: IOPS=15, BW=63.0KiB/s (64.5kB/s)(6052KiB/96017msec) clat (msec): min=3, max=196, avg=25.68, stdev=22.59 lat (msec): min=3, max=196, avg=25.68, stdev=22.59 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 39], 90.00th=[ 61], 95.00th=[ 75], | 99.00th=[ 104], 99.50th=[ 113], 99.90th=[ 165], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 7, max= 222, per=25.29%, avg=62.98, stdev=41.84, samples=189 iops : min= 1, max= 55, avg=15.16, stdev=10.52, samples=189 write: IOPS=16, BW=64.9KiB/s (66.5kB/s)(6236KiB/96017msec); 0 zone resets clat (msec): min=8, max=521, avg=36.62, stdev=28.20 lat (msec): min=8, max=521, avg=36.62, stdev=28.20 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 54], 90.00th=[ 72], 95.00th=[ 85], | 99.00th=[ 126], 99.50th=[ 150], 99.90th=[ 207], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 7, max= 192, per=24.77%, avg=64.41, stdev=39.26, samples=190 iops : min= 1, max= 48, avg=15.52, stdev= 9.89, samples=190 lat (msec) : 4=0.03%, 10=11.13%, 20=34.41%, 50=35.87%, 100=16.57% lat (msec) : 250=1.95%, 750=0.03% cpu : usr=0.07%, sys=4.90%, ctx=5394, 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=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=249KiB/s (255kB/s), 61.7KiB/s-63.0KiB/s (63.2kB/s-64.5kB/s), io=23.4MiB (24.6MB), run=95764-96369msec WRITE: bw=261KiB/s (267kB/s), 64.9KiB/s-65.0KiB/s (66.5kB/s-67.5kB/s), io=24.6MiB (25.7MB), run=95764-96369msec 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=180676: Wed Aug 12 17:34:54 2026 read: IOPS=18, BW=291KiB/s (298kB/s)(5920KiB/20334msec) clat (usec): min=54, max=150288, avg=29585.09, stdev=18177.65 lat (usec): min=54, max=150289, avg=29586.79, stdev=18177.62 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 108], 10.00th=[ 11994], 20.00th=[ 16450], | 30.00th=[ 19792], 40.00th=[ 23462], 50.00th=[ 26608], 60.00th=[ 30016], | 70.00th=[ 35390], 80.00th=[ 40109], 90.00th=[ 50594], 95.00th=[ 60031], | 99.00th=[ 86508], 99.50th=[128451], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 159, max= 480, per=24.90%, avg=288.57, stdev=69.87, samples=40 iops : min= 9, max= 30, avg=17.40, stdev= 4.40, samples=40 write: IOPS=19, BW=313KiB/s (321kB/s)(6368KiB/20334msec); 0 zone resets clat (usec): min=1470, max=113191, avg=23383.38, stdev=19639.32 lat (usec): min=1472, max=113192, avg=23384.99, stdev=19639.30 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 2769], 10.00th=[ 3687], 20.00th=[ 5669], | 30.00th=[ 8717], 40.00th=[ 13304], 50.00th=[ 17695], 60.00th=[ 23462], | 70.00th=[ 30016], 80.00th=[ 39584], 90.00th=[ 51119], 95.00th=[ 63701], | 99.00th=[ 79168], 99.50th=[106431], 99.90th=[112722], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 64, max= 505, per=25.56%, avg=311.80, stdev=88.69, samples=40 iops : min= 4, max= 31, avg=18.88, stdev= 5.53, samples=40 lat (usec) : 100=2.08%, 250=0.78%, 750=0.13% lat (msec) : 2=0.78%, 4=5.86%, 10=10.68%, 20=22.66%, 50=46.09% lat (msec) : 100=10.29%, 250=0.65% cpu : usr=0.07%, sys=12.48%, ctx=2043, 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=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=180677: Wed Aug 12 17:34:54 2026 read: IOPS=18, BW=291KiB/s (298kB/s)(5744KiB/19720msec) clat (usec): min=50, max=131204, avg=29266.65, stdev=18754.85 lat (usec): min=51, max=131205, avg=29269.94, stdev=18751.13 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 84], 10.00th=[ 9634], 20.00th=[ 15926], | 30.00th=[ 19792], 40.00th=[ 23462], 50.00th=[ 27132], 60.00th=[ 31327], | 70.00th=[ 34341], 80.00th=[ 41681], 90.00th=[ 50594], 95.00th=[ 61080], | 99.00th=[100140], 99.50th=[116917], 99.90th=[131597], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 95, max= 446, per=24.99%, avg=289.62, stdev=83.24, samples=39 iops : min= 5, max= 27, avg=17.49, stdev= 5.18, samples=39 write: IOPS=20, BW=332KiB/s (340kB/s)(6544KiB/19720msec); 0 zone resets clat (usec): min=1747, max=95376, avg=22309.33, stdev=19349.74 lat (usec): min=1748, max=95377, avg=22311.49, stdev=19349.82 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2671], 10.00th=[ 3556], 20.00th=[ 5211], | 30.00th=[ 7832], 40.00th=[12387], 50.00th=[16909], 60.00th=[22152], | 70.00th=[28705], 80.00th=[36439], 90.00th=[50070], 95.00th=[61080], | 99.00th=[83362], 99.50th=[89654], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 95, max= 637, per=27.10%, avg=330.67, stdev=108.05, samples=39 iops : min= 5, max= 39, avg=20.05, stdev= 6.77, samples=39 lat (usec) : 100=2.99%, 250=1.17% lat (msec) : 2=0.91%, 4=5.47%, 10=13.54%, 20=20.05%, 50=45.70% lat (msec) : 100=9.64%, 250=0.52% cpu : usr=0.09%, sys=12.75%, ctx=1975, 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=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=180678: Wed Aug 12 17:34:54 2026 read: IOPS=18, BW=303KiB/s (310kB/s)(6256KiB/20649msec) clat (usec): min=35, max=122975, avg=27717.19, stdev=16846.48 lat (usec): min=35, max=122975, avg=27742.72, stdev=16875.75 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 66], 10.00th=[ 131], 20.00th=[ 16450], | 30.00th=[ 19792], 40.00th=[ 22414], 50.00th=[ 25822], 60.00th=[ 30016], | 70.00th=[ 34341], 80.00th=[ 41157], 90.00th=[ 48497], 95.00th=[ 54789], | 99.00th=[ 72877], 99.50th=[ 91751], 99.90th=[123208], 99.95th=[123208], | 99.99th=[123208] bw ( KiB/s): min= 95, max= 512, per=26.05%, avg=301.97, stdev=104.69, samples=40 iops : min= 5, max= 32, avg=18.25, stdev= 6.56, samples=40 write: IOPS=18, BW=292KiB/s (299kB/s)(6032KiB/20649msec); 0 zone resets clat (usec): min=1579, max=118038, avg=25913.62, stdev=21871.75 lat (usec): min=1580, max=118040, avg=25915.26, stdev=21871.73 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2507], 10.00th=[ 3556], 20.00th=[ 5932], | 30.00th=[ 10159], 40.00th=[ 15139], 50.00th=[ 21365], 60.00th=[ 25822], | 70.00th=[ 32375], 80.00th=[ 42730], 90.00th=[ 57410], 95.00th=[ 69731], | 99.00th=[ 91751], 99.50th=[109577], 99.90th=[117965], 99.95th=[117965], | 99.99th=[117965] bw ( KiB/s): min= 94, max= 495, per=23.50%, avg=286.75, stdev=92.69, samples=40 iops : min= 5, max= 30, avg=17.28, stdev= 5.69, samples=40 lat (usec) : 50=0.65%, 100=3.65%, 250=1.43%, 500=0.13% lat (msec) : 2=0.91%, 4=5.47%, 10=8.46%, 20=18.75%, 50=49.22% lat (msec) : 100=10.94%, 250=0.39% cpu : usr=0.07%, sys=11.74%, ctx=2044, 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=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=180679: Wed Aug 12 17:34:54 2026 read: IOPS=20, BW=323KiB/s (330kB/s)(6032KiB/18700msec) clat (usec): min=42, max=113021, avg=27566.40, stdev=17506.85 lat (usec): min=42, max=113022, avg=27567.33, stdev=17506.86 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 69], 10.00th=[ 167], 20.00th=[ 16319], | 30.00th=[ 19006], 40.00th=[ 22414], 50.00th=[ 25297], 60.00th=[ 28705], | 70.00th=[ 34866], 80.00th=[ 39584], 90.00th=[ 46924], 95.00th=[ 53740], | 99.00th=[ 89654], 99.50th=[111674], 99.90th=[112722], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 127, max= 510, per=27.68%, avg=320.78, stdev=105.63, samples=37 iops : min= 7, max= 31, avg=19.41, stdev= 6.68, samples=37 write: IOPS=20, BW=335KiB/s (343kB/s)(6256KiB/18700msec); 0 zone resets clat (usec): min=1547, max=86854, avg=21022.30, stdev=19086.73 lat (usec): min=1548, max=86855, avg=21024.24, stdev=19086.53 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2311], 10.00th=[ 3228], 20.00th=[ 4817], | 30.00th=[ 6980], 40.00th=[10290], 50.00th=[14484], 60.00th=[20317], | 70.00th=[26084], 80.00th=[36439], 90.00th=[47973], 95.00th=[65274], | 99.00th=[82314], 99.50th=[84411], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 160, max= 605, per=27.47%, avg=335.14, stdev=100.61, samples=37 iops : min= 10, max= 37, avg=20.32, stdev= 6.16, samples=37 lat (usec) : 50=0.65%, 100=2.99%, 250=1.56%, 750=0.13% lat (msec) : 2=1.04%, 4=6.51%, 10=12.63%, 20=21.35%, 50=44.66% lat (msec) : 100=8.07%, 250=0.39% cpu : usr=0.11%, sys=12.86%, ctx=1887, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1160KiB/s (1188kB/s), 291KiB/s-323KiB/s (298kB/s-330kB/s), io=23.4MiB (24.5MB), run=18700-20649msec WRITE: bw=1220KiB/s (1250kB/s), 292KiB/s-335KiB/s (299kB/s-343kB/s), io=24.6MiB (25.8MB), run=18700-20649msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180681: Wed Aug 12 17:35:01 2026 read: IOPS=13, BW=221KiB/s (226kB/s)(5920KiB/26847msec) clat (msec): min=5, max=140, avg=29.43, stdev=24.91 lat (msec): min=5, max=140, avg=29.43, stdev=24.91 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 32], 80.00th=[ 45], 90.00th=[ 68], 95.00th=[ 84], | 99.00th=[ 128], 99.50th=[ 136], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 31, max= 572, per=23.94%, avg=213.52, stdev=119.99, samples=52 iops : min= 1, max= 35, avg=12.75, stdev= 7.62, samples=52 write: IOPS=14, BW=237KiB/s (243kB/s)(6368KiB/26847msec); 0 zone resets clat (msec): min=9, max=177, avg=39.94, stdev=25.47 lat (msec): min=9, max=177, avg=39.94, stdev=25.47 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 60], 90.00th=[ 77], 95.00th=[ 96], | 99.00th=[ 121], 99.50th=[ 138], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 64, max= 576, per=24.92%, avg=233.79, stdev=126.01, samples=52 iops : min= 4, max= 36, avg=14.02, stdev= 7.96, samples=52 lat (msec) : 10=5.21%, 20=30.34%, 50=42.45%, 100=18.75%, 250=3.26% cpu : usr=0.05%, sys=4.46%, ctx=1325, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180682: Wed Aug 12 17:35:01 2026 read: IOPS=13, BW=217KiB/s (222kB/s)(5744KiB/26504msec) clat (msec): min=5, max=123, avg=26.92, stdev=20.60 lat (msec): min=5, max=123, avg=26.92, stdev=20.60 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 38], 90.00th=[ 59], 95.00th=[ 74], | 99.00th=[ 93], 99.50th=[ 121], 99.90th=[ 125], 99.95th=[ 125], | 99.99th=[ 125] bw ( KiB/s): min= 31, max= 608, per=24.30%, avg=216.77, stdev=131.57, samples=52 iops : min= 1, max= 38, avg=12.94, stdev= 8.35, samples=52 write: IOPS=15, BW=247KiB/s (253kB/s)(6544KiB/26504msec); 0 zone resets clat (msec): min=11, max=154, avg=41.13, stdev=24.60 lat (msec): min=11, max=154, avg=41.13, stdev=24.60 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 61], 90.00th=[ 79], 95.00th=[ 92], | 99.00th=[ 118], 99.50th=[ 134], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 64, max= 576, per=26.20%, avg=245.77, stdev=128.49, samples=52 iops : min= 4, max= 36, avg=14.77, stdev= 8.10, samples=52 lat (msec) : 10=3.52%, 20=29.43%, 50=45.83%, 100=19.27%, 250=1.95% cpu : usr=0.06%, sys=4.71%, ctx=1286, 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=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=180683: Wed Aug 12 17:35:01 2026 read: IOPS=14, BW=234KiB/s (240kB/s)(6256KiB/26742msec) clat (msec): min=5, max=122, avg=28.75, stdev=23.69 lat (msec): min=5, max=122, avg=28.75, stdev=23.69 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 31], 80.00th=[ 42], 90.00th=[ 64], 95.00th=[ 86], | 99.00th=[ 120], 99.50th=[ 122], 99.90th=[ 123], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 63, max= 636, per=26.13%, avg=233.12, stdev=142.57, samples=52 iops : min= 3, max= 39, avg=13.98, stdev= 8.97, samples=52 write: IOPS=14, BW=226KiB/s (231kB/s)(6032KiB/26742msec); 0 zone resets clat (msec): min=10, max=165, avg=40.95, stdev=26.30 lat (msec): min=10, max=165, avg=40.95, stdev=26.30 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 59], 90.00th=[ 83], 95.00th=[ 95], | 99.00th=[ 136], 99.50th=[ 144], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 31, max= 544, per=23.66%, avg=221.88, stdev=120.70, samples=52 iops : min= 1, max= 34, avg=13.27, stdev= 7.66, samples=52 lat (msec) : 10=4.04%, 20=30.21%, 50=45.83%, 100=16.67%, 250=3.26% cpu : usr=0.06%, sys=4.57%, ctx=1387, 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=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=180684: Wed Aug 12 17:35:01 2026 read: IOPS=14, BW=227KiB/s (232kB/s)(6032KiB/26595msec) clat (msec): min=5, max=129, avg=28.94, stdev=23.12 lat (msec): min=5, max=129, avg=28.94, stdev=23.12 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 44], 90.00th=[ 65], 95.00th=[ 82], | 99.00th=[ 113], 99.50th=[ 125], 99.90th=[ 130], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 63, max= 573, per=25.20%, avg=224.83, stdev=122.26, samples=52 iops : min= 3, max= 35, avg=13.44, stdev= 7.81, samples=52 write: IOPS=14, BW=235KiB/s (241kB/s)(6256KiB/26595msec); 0 zone resets clat (msec): min=8, max=179, avg=40.05, stdev=24.98 lat (msec): min=8, max=179, avg=40.05, stdev=24.98 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 57], 90.00th=[ 75], 95.00th=[ 91], | 99.00th=[ 138], 99.50th=[ 153], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 63, max= 570, per=24.98%, avg=234.29, stdev=120.12, samples=52 iops : min= 3, max= 35, avg=14.06, stdev= 7.60, samples=52 lat (msec) : 10=4.43%, 20=27.73%, 50=47.79%, 100=17.71%, 250=2.34% cpu : usr=0.07%, sys=4.57%, ctx=1355, 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=892KiB/s (914kB/s), 217KiB/s-234KiB/s (222kB/s-240kB/s), io=23.4MiB (24.5MB), run=26504-26847msec WRITE: bw=939KiB/s (961kB/s), 226KiB/s-247KiB/s (231kB/s-253kB/s), io=24.6MiB (25.8MB), run=26504-26847msec 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=180693: Wed Aug 12 17:35:11 2026 read: IOPS=2, BW=2361KiB/s (2418kB/s)(7168KiB/3036msec) clat (msec): min=99, max=330, avg=170.22, stdev=81.56 lat (msec): min=99, max=330, avg=170.22, stdev=81.56 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 113], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 138], 60.00th=[ 153], | 70.00th=[ 153], 80.00th=[ 226], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 2043, max= 5456, per=73.12%, avg=3865.00, stdev=1718.19, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 write: IOPS=1, BW=1686KiB/s (1727kB/s)(5120KiB/3036msec); 0 zone resets clat (msec): min=124, max=1104, avg=366.21, stdev=414.99 lat (msec): min=124, max=1104, avg=366.26, stdev=414.99 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 209], 60.00th=[ 209], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1818, max= 2048, per=26.85%, avg=1987.00, stdev=112.73, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=75.00%, 500=8.33%, 2000=8.33% cpu : usr=0.00%, sys=24.88%, ctx=179, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180694: Wed Aug 12 17:35:11 2026 read: IOPS=0, BW=529KiB/s (541kB/s)(2048KiB/3874msec) clat (msec): min=186, max=1380, avg=783.43, stdev=844.41 lat (msec): min=186, max=1380, avg=783.43, stdev=844.41 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1851, max= 2039, per=36.80%, avg=1945.00, stdev=132.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2643KiB/s (2707kB/s)(10.0MiB/3874msec); 0 zone resets clat (msec): min=98, max=653, avg=223.73, stdev=166.07 lat (msec): min=98, max=653, avg=223.82, stdev=166.06 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 102], | 30.00th=[ 133], 40.00th=[ 144], 50.00th=[ 146], 60.00th=[ 163], | 70.00th=[ 234], 80.00th=[ 259], 90.00th=[ 305], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 2039, max= 8159, per=62.03%, avg=4591.00, stdev=2566.42, samples=4 iops : min= 1, max= 7, avg= 3.50, stdev= 2.52, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=27.58%, ctx=294, 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=180695: Wed Aug 12 17:35:11 2026 read: IOPS=2, BW=3027KiB/s (3099kB/s)(6144KiB/2030msec) clat (usec): min=537, max=220637, avg=112506.89, stdev=80271.89 lat (usec): min=538, max=220637, avg=112507.91, stdev=80271.57 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 47449], | 30.00th=[ 47449], 40.00th=[105382], 50.00th=[105382], 60.00th=[130548], | 70.00th=[170918], 80.00th=[170918], 90.00th=[221250], 95.00th=[221250], | 99.00th=[221250], 99.50th=[221250], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 3703, max= 4096, per=73.77%, avg=3899.50, stdev=277.89, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=3027KiB/s (3099kB/s)(6144KiB/2030msec); 0 zone resets clat (msec): min=166, max=299, avg=213.14, stdev=50.64 lat (msec): min=166, max=299, avg=213.26, stdev=50.67 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 215], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 1851, max= 3580, per=33.68%, avg=2493.00, stdev=946.51, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 250=75.00%, 500=8.33% cpu : usr=0.00%, sys=36.67%, ctx=230, 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=180696: Wed Aug 12 17:35:11 2026 read: IOPS=2, BW=2066KiB/s (2116kB/s)(5120KiB/2478msec) clat (usec): min=378, max=285072, avg=80866.19, stdev=124973.02 lat (usec): min=379, max=285072, avg=80866.88, stdev=124972.79 clat percentiles (usec): | 1.00th=[ 379], 5.00th=[ 379], 10.00th=[ 379], 20.00th=[ 379], | 30.00th=[ 457], 40.00th=[ 457], 50.00th=[ 515], 60.00th=[ 515], | 70.00th=[117965], 80.00th=[117965], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7406, max= 7406, per=100.00%, avg=7406.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2893KiB/s (2962kB/s)(7168KiB/2478msec); 0 zone resets clat (msec): min=130, max=450, avg=262.38, stdev=106.59 lat (msec): min=130, max=450, avg=262.44, stdev=106.57 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 197], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 215], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 321], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1841, max= 4096, per=33.19%, avg=2456.75, stdev=1096.62, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 250=41.67%, 500=33.33% cpu : usr=0.00%, sys=32.74%, ctx=144, 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=5287KiB/s (5413kB/s), 529KiB/s-3027KiB/s (541kB/s-3099kB/s), io=20.0MiB (20.0MB), run=2030-3874msec WRITE: bw=7401KiB/s (7579kB/s), 1686KiB/s-3027KiB/s (1727kB/s-3099kB/s), io=28.0MiB (29.4MB), run=2030-3874msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180698: Wed Aug 12 17:35:11 2026 read: IOPS=2, BW=2467KiB/s (2526kB/s)(7168KiB/2906msec) clat (msec): min=46, max=527, avg=194.70, stdev=159.94 lat (msec): min=46, max=527, avg=194.71, stdev=159.94 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 93], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 188], 60.00th=[ 203], | 70.00th=[ 203], 80.00th=[ 211], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 1501, max= 4096, per=49.76%, avg=2919.75, stdev=1343.85, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1762KiB/s (1804kB/s)(5120KiB/2906msec); 0 zone resets clat (msec): min=103, max=716, avg=302.60, stdev=246.12 lat (msec): min=103, max=716, avg=302.67, stdev=246.12 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 2019, max= 4087, per=33.09%, avg=2718.00, stdev=1185.68, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 50=8.33%, 100=16.67%, 250=50.00%, 500=8.33%, 750=16.67% cpu : usr=0.00%, sys=9.64%, ctx=104, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180699: Wed Aug 12 17:35:11 2026 read: IOPS=0, BW=587KiB/s (601kB/s)(2048KiB/3490msec) clat (msec): min=101, max=1072, avg=586.88, stdev=687.04 lat (msec): min=101, max=1072, avg=586.88, stdev=687.04 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 102], 60.00th=[ 1070], | 70.00th=[ 1070], 80.00th=[ 1070], 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= 2043, max= 2048, per=34.86%, avg=2045.50, stdev= 3.54, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2934KiB/s (3005kB/s)(10.0MiB/3490msec); 0 zone resets clat (msec): min=58, max=452, avg=228.47, stdev=143.88 lat (msec): min=58, max=452, avg=228.86, stdev=144.33 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 68], | 30.00th=[ 99], 40.00th=[ 130], 50.00th=[ 184], 60.00th=[ 253], | 70.00th=[ 288], 80.00th=[ 342], 90.00th=[ 418], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 2019, max= 6131, per=43.47%, avg=3571.25, stdev=1961.98, samples=4 iops : min= 1, max= 5, avg= 2.75, stdev= 1.71, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=41.67%, 2000=8.33% cpu : usr=0.03%, sys=10.46%, ctx=124, 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=180700: Wed Aug 12 17:35:11 2026 read: IOPS=1, BW=1862KiB/s (1907kB/s)(6144KiB/3299msec) clat (msec): min=88, max=311, avg=173.83, stdev=95.17 lat (msec): min=88, max=311, avg=173.83, stdev=95.17 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 142], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 313], 95.00th=[ 313], | 99.00th=[ 313], 99.50th=[ 313], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 2043, max= 6131, per=58.07%, avg=3407.33, stdev=2358.77, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1862KiB/s (1907kB/s)(6144KiB/3299msec); 0 zone resets clat (msec): min=122, max=1180, avg=365.00, stdev=413.35 lat (msec): min=122, max=1180, avg=365.08, stdev=413.34 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 178], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 2043, max= 4087, per=37.18%, avg=3054.25, stdev=1164.97, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, 2000=8.33% cpu : usr=0.03%, sys=10.13%, ctx=118, 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=180701: Wed Aug 12 17:35:11 2026 read: IOPS=1, BW=1490KiB/s (1526kB/s)(5120KiB/3436msec) clat (msec): min=50, max=463, avg=191.05, stdev=172.35 lat (msec): min=50, max=463, avg=191.05, stdev=172.35 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 74], 40.00th=[ 74], 50.00th=[ 111], 60.00th=[ 111], | 70.00th=[ 259], 80.00th=[ 259], 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= 4087, max= 4087, per=69.65%, avg=4087.00, stdev= 0.00, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2086KiB/s (2136kB/s)(7168KiB/3436msec); 0 zone resets clat (msec): min=64, max=1142, avg=351.39, stdev=376.40 lat (msec): min=64, max=1143, avg=351.48, stdev=376.40 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 105], | 30.00th=[ 109], 40.00th=[ 109], 50.00th=[ 228], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 409], 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= 4039, max= 4096, per=49.51%, avg=4067.50, stdev=40.31, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.03%, sys=8.50%, ctx=86, 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=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=5868KiB/s (6009kB/s), 587KiB/s-2467KiB/s (601kB/s-2526kB/s), io=20.0MiB (20.0MB), run=2906-3490msec WRITE: bw=8215KiB/s (8413kB/s), 1762KiB/s-2934KiB/s (1804kB/s-3005kB/s), io=28.0MiB (29.4MB), run=2906-3490msec 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=180706: Wed Aug 12 17:35:20 2026 read: IOPS=1, BW=5608KiB/s (5743kB/s)(12.0MiB/2191msec) clat (msec): min=266, max=1075, avg=710.05, stdev=410.20 lat (msec): min=266, max=1075, avg=710.05, stdev=410.20 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.39%, ctx=48, 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=180707: Wed Aug 12 17:35:20 2026 read: IOPS=0, BW=1706KiB/s (1747kB/s)(4096KiB/2401msec) clat (nsec): min=154523k, max=154523k, avg=154522843.00, stdev= 0.00 lat (nsec): min=154525k, max=154525k, avg=154524752.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 155], 60.00th=[ 155], | 70.00th=[ 155], 80.00th=[ 155], 90.00th=[ 155], 95.00th=[ 155], | 99.00th=[ 155], 99.50th=[ 155], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 5535, max= 5535, per=81.12%, avg=5535.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3412KiB/s (3494kB/s)(8192KiB/2401msec); 0 zone resets clat (msec): min=506, max=1716, avg=1111.38, stdev=855.45 lat (msec): min=506, max=1716, avg=1111.64, stdev=855.53 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=[ 1720], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 5535, max= 5535, per=40.56%, avg=5535.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.42%, ctx=51, 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=180708: Wed Aug 12 17:35:20 2026 write: IOPS=1, BW=5454KiB/s (5585kB/s)(12.0MiB/2253msec); 0 zone resets clat (msec): min=505, max=1078, avg=744.42, stdev=298.10 lat (msec): min=505, max=1078, avg=744.75, stdev=298.14 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 5760, max= 8175, per=51.06%, avg=6967.50, stdev=1707.66, 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=6.71%, ctx=69, 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=180709: Wed Aug 12 17:35:20 2026 write: IOPS=2, BW=8382KiB/s (8583kB/s)(12.0MiB/1466msec); 0 zone resets clat (msec): min=221, max=819, avg=474.40, stdev=309.01 lat (msec): min=222, max=819, avg=474.62, stdev=308.97 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min=11619, max=11619, per=85.14%, avg=11619.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=13.45%, ctx=75, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=6824KiB/s (6988kB/s), 1706KiB/s-5608KiB/s (1747kB/s-5743kB/s), io=16.0MiB (16.8MB), run=2191-2401msec WRITE: bw=13.3MiB/s (13.0MB/s), 3412KiB/s-8382KiB/s (3494kB/s-8583kB/s), io=32.0MiB (33.6MB), run=1466-2401msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180711: Wed Aug 12 17:35:20 2026 read: IOPS=1, BW=7332KiB/s (7508kB/s)(12.0MiB/1676msec) clat (msec): min=532, max=561, avg=551.91, stdev=16.46 lat (msec): min=532, max=561, avg=551.91, stdev=16.46 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 5542, max= 8175, per=96.25%, avg=6858.50, stdev=1861.81, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=30.57%, ctx=385, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180712: Wed Aug 12 17:35:20 2026 read: IOPS=0, BW=1782KiB/s (1824kB/s)(4096KiB/2299msec) clat (nsec): min=466223k, max=466223k, avg=466222827.00, stdev= 0.00 lat (nsec): min=466225k, max=466225k, avg=466224639.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 5868, max= 5868, per=82.35%, avg=5868.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3563KiB/s (3649kB/s)(8192KiB/2299msec); 0 zone resets clat (msec): min=797, max=959, avg=878.53, stdev=114.72 lat (msec): min=797, max=959, avg=878.81, stdev=114.72 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 961], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8126, max= 8126, per=57.01%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=9.18%, ctx=187, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180713: Wed Aug 12 17:35:20 2026 write: IOPS=1, BW=5345KiB/s (5473kB/s)(12.0MiB/2299msec); 0 zone resets clat (msec): min=213, max=1082, avg=751.42, stdev=470.03 lat (msec): min=213, max=1083, avg=751.77, stdev=470.06 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8078, max= 8175, per=57.02%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.92%, ctx=58, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180714: Wed Aug 12 17:35:20 2026 write: IOPS=1, BW=5863KiB/s (6003kB/s)(12.0MiB/2096msec); 0 zone resets clat (msec): min=235, max=947, avg=689.16, stdev=394.24 lat (msec): min=235, max=948, avg=689.66, stdev=394.46 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8175, max= 8175, per=57.36%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.05%, sys=8.31%, ctx=39, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7127KiB/s (7298kB/s), 1782KiB/s-7332KiB/s (1824kB/s-7508kB/s), io=16.0MiB (16.8MB), run=1676-2299msec WRITE: bw=13.9MiB/s (14.6MB/s), 3563KiB/s-5863KiB/s (3649kB/s-6003kB/s), io=32.0MiB (33.6MB), run=2096-2299msec