== sanity test 398b: DIO and buffer IO race ============== 17:11:35 (1788642695) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.31452 s, 8.0 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=179511: Sat Sep 5 17:13:47 2026 read: IOPS=13, BW=53.3KiB/s (54.6kB/s)(5992KiB/112414msec) clat (usec): min=40, max=593095, avg=40963.92, stdev=29513.14 lat (usec): min=40, max=593097, avg=40970.48, stdev=29516.34 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 12256], 10.00th=[ 16188], 20.00th=[ 20579], | 30.00th=[ 25297], 40.00th=[ 30278], 50.00th=[ 34866], 60.00th=[ 40633], | 70.00th=[ 48497], 80.00th=[ 58983], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[128451], 99.50th=[160433], 99.90th=[246416], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 7, max= 103, per=25.39%, avg=53.07, stdev=20.14, samples=221 iops : min= 1, max= 25, avg=12.64, stdev= 5.06, samples=221 write: IOPS=14, BW=56.0KiB/s (57.4kB/s)(6296KiB/112414msec); 0 zone resets clat (usec): min=1045, max=315676, avg=32324.13, stdev=33713.51 lat (usec): min=1046, max=315678, avg=32329.50, stdev=33721.67 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1319], 10.00th=[ 2008], 20.00th=[ 3982], | 30.00th=[ 6980], 40.00th=[ 13698], 50.00th=[ 23200], 60.00th=[ 30802], | 70.00th=[ 42730], 80.00th=[ 56886], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[139461], 99.50th=[166724], 99.90th=[227541], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 135, per=25.55%, avg=55.69, stdev=23.31, samples=221 iops : min= 1, max= 33, avg=13.30, stdev= 5.85, samples=221 lat (usec) : 50=0.03%, 100=1.30%, 250=0.16%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.18%, 4=5.18%, 10=7.88%, 20=12.76%, 50=41.18% lat (msec) : 100=22.40%, 250=3.74%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=5.65%, ctx=6657, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179512: Sat Sep 5 17:13:47 2026 read: IOPS=13, BW=52.0KiB/s (53.3kB/s)(5940KiB/114132msec) clat (usec): min=31, max=620441, avg=42243.29, stdev=31477.18 lat (usec): min=32, max=620444, avg=42245.62, stdev=31476.39 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11338], 10.00th=[ 16188], 20.00th=[ 21103], | 30.00th=[ 26346], 40.00th=[ 30540], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 58459], 90.00th=[ 77071], 95.00th=[ 89654], | 99.00th=[137364], 99.50th=[166724], 99.90th=[325059], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 95, per=24.63%, avg=51.49, stdev=19.32, samples=224 iops : min= 1, max= 23, avg=12.25, stdev= 4.87, samples=224 write: IOPS=13, BW=55.6KiB/s (56.0kB/s)(6348KiB/114132msec); 0 zone resets clat (usec): min=934, max=227928, avg=32271.84, stdev=32450.76 lat (usec): min=936, max=227929, avg=32274.14, stdev=32450.49 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1287], 10.00th=[ 1975], 20.00th=[ 3949], | 30.00th=[ 6980], 40.00th=[ 15401], 50.00th=[ 23725], 60.00th=[ 32113], | 70.00th=[ 41681], 80.00th=[ 55313], 90.00th=[ 78119], 95.00th=[ 99091], | 99.00th=[139461], 99.50th=[156238], 99.90th=[193987], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 159, per=25.16%, avg=54.85, stdev=23.53, samples=224 iops : min= 1, max= 39, avg=13.08, stdev= 5.92, samples=224 lat (usec) : 50=0.23%, 100=1.37%, 250=0.26%, 1000=0.03% lat (msec) : 2=5.21%, 4=5.31%, 10=7.58%, 20=11.62%, 50=41.89% lat (msec) : 100=22.69%, 250=3.74%, 500=0.03%, 750=0.03% cpu : usr=0.10%, sys=5.57%, ctx=6706, 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=179513: Sat Sep 5 17:13:47 2026 read: IOPS=13, BW=54.6KiB/s (55.0kB/s)(6028KiB/110308msec) clat (usec): min=38, max=321061, avg=40114.92, stdev=26366.00 lat (usec): min=38, max=321063, avg=40120.95, stdev=26363.24 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 9503], 10.00th=[ 15795], 20.00th=[ 20579], | 30.00th=[ 25035], 40.00th=[ 30016], 50.00th=[ 34866], 60.00th=[ 40109], | 70.00th=[ 47973], 80.00th=[ 56886], 90.00th=[ 71828], 95.00th=[ 85459], | 99.00th=[129500], 99.50th=[147850], 99.90th=[193987], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 15, max= 119, per=26.00%, avg=54.35, stdev=20.23, samples=217 iops : min= 3, max= 29, avg=12.96, stdev= 5.08, samples=217 write: IOPS=14, BW=56.8KiB/s (58.1kB/s)(6260KiB/110308msec); 0 zone resets clat (usec): min=1007, max=613480, avg=31734.75, stdev=34713.80 lat (usec): min=1008, max=613483, avg=31744.09, stdev=34708.59 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1303], 10.00th=[ 1893], 20.00th=[ 3621], | 30.00th=[ 6587], 40.00th=[ 13698], 50.00th=[ 23200], 60.00th=[ 31065], | 70.00th=[ 40633], 80.00th=[ 53740], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[135267], 99.50th=[154141], 99.90th=[173016], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 135, per=25.92%, avg=56.50, stdev=23.43, samples=217 iops : min= 1, max= 33, avg=13.50, stdev= 5.89, samples=217 lat (usec) : 50=0.29%, 100=1.60%, 250=0.13%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.66%, 4=5.34%, 10=7.71%, 20=11.30%, 50=43.00% lat (msec) : 100=21.39%, 250=3.39%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=5.70%, ctx=6474, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179514: Sat Sep 5 17:13:47 2026 read: IOPS=13, BW=52.7KiB/s (53.0kB/s)(6052KiB/114833msec) clat (usec): min=39, max=209778, avg=41832.06, stdev=27217.25 lat (usec): min=40, max=209780, avg=41836.49, stdev=27216.94 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 1188], 10.00th=[ 15139], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 31327], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 50070], 80.00th=[ 60031], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[135267], 99.50th=[160433], 99.90th=[193987], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 7, max= 139, per=25.09%, avg=52.44, stdev=19.97, samples=226 iops : min= 1, max= 34, avg=12.49, stdev= 5.03, samples=226 write: IOPS=13, BW=54.3KiB/s (55.6kB/s)(6236KiB/114833msec); 0 zone resets clat (usec): min=942, max=623419, avg=32908.27, stdev=36593.84 lat (usec): min=943, max=623422, avg=32923.09, stdev=36598.17 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1336], 10.00th=[ 2008], 20.00th=[ 4080], | 30.00th=[ 7439], 40.00th=[ 15795], 50.00th=[ 23987], 60.00th=[ 31851], | 70.00th=[ 41157], 80.00th=[ 55313], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[143655], 99.50th=[173016], 99.90th=[299893], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 7, max= 126, per=24.77%, avg=54.00, stdev=22.48, samples=226 iops : min= 1, max= 31, avg=12.88, stdev= 5.64, samples=226 lat (usec) : 50=0.29%, 100=1.73%, 250=0.23%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=4.98%, 4=5.08%, 10=7.58%, 20=11.75%, 50=41.41% lat (msec) : 100=22.66%, 250=3.97%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=5.58%, ctx=6659, 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=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=209KiB/s (214kB/s), 52.0KiB/s-54.6KiB/s (53.3kB/s-55.0kB/s), io=23.4MiB (24.6MB), run=110308-114833msec WRITE: bw=219KiB/s (224kB/s), 54.3KiB/s-56.8KiB/s (55.6kB/s-58.1kB/s), io=24.6MiB (25.7MB), run=110308-114833msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179506: Sat Sep 5 17:14:24 2026 read: IOPS=9, BW=39.5KiB/s (40.4kB/s)(5992KiB/151699msec) clat (msec): min=5, max=696, avg=39.54, stdev=39.66 lat (msec): min=5, max=696, avg=39.54, stdev=39.66 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 86], 95.00th=[ 113], | 99.00th=[ 182], 99.50th=[ 205], 99.90th=[ 300], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 128, per=25.37%, avg=40.09, stdev=26.41, samples=292 iops : min= 1, max= 32, avg= 9.37, stdev= 6.65, samples=292 write: IOPS=10, BW=41.5KiB/s (42.5kB/s)(6296KiB/151699msec); 0 zone resets clat (msec): min=10, max=330, avg=58.48, stdev=40.41 lat (msec): min=10, max=330, avg=58.48, stdev=40.41 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 86], 90.00th=[ 113], 95.00th=[ 136], | 99.00th=[ 201], 99.50th=[ 236], 99.90th=[ 317], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 143, per=25.19%, avg=41.56, stdev=24.98, samples=296 iops : min= 1, max= 35, avg= 9.74, stdev= 6.26, samples=296 lat (msec) : 10=3.12%, 20=16.15%, 50=47.20%, 100=23.31%, 250=9.86% lat (msec) : 500=0.33%, 750=0.03% cpu : usr=0.06%, sys=1.96%, ctx=4753, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179507: Sat Sep 5 17:14:24 2026 read: IOPS=9, BW=39.4KiB/s (40.3kB/s)(5940KiB/150796msec) clat (msec): min=5, max=716, avg=38.47, stdev=38.75 lat (msec): min=5, max=716, avg=38.48, stdev=38.75 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 88], 95.00th=[ 113], | 99.00th=[ 159], 99.50th=[ 190], 99.90th=[ 305], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 136, per=25.09%, avg=39.65, stdev=26.55, samples=292 iops : min= 1, max= 34, avg= 9.26, stdev= 6.67, samples=292 write: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6348KiB/150796msec); 0 zone resets clat (msec): min=11, max=361, avg=58.74, stdev=40.73 lat (msec): min=11, max=361, avg=58.74, stdev=40.73 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 66], 80.00th=[ 87], 90.00th=[ 113], 95.00th=[ 133], | 99.00th=[ 207], 99.50th=[ 264], 99.90th=[ 300], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 120, per=25.36%, avg=41.84, stdev=25.07, samples=296 iops : min= 1, max= 30, avg= 9.81, stdev= 6.30, samples=296 lat (msec) : 10=2.86%, 20=16.60%, 50=47.92%, 100=21.65%, 250=10.58% lat (msec) : 500=0.36%, 750=0.03% cpu : usr=0.06%, sys=1.89%, ctx=4695, 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=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=179508: Sat Sep 5 17:14:24 2026 read: IOPS=10, BW=40.1KiB/s (41.1kB/s)(6028KiB/150349msec) clat (msec): min=4, max=242, avg=38.85, stdev=33.82 lat (msec): min=4, max=242, avg=38.85, stdev=33.82 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 58], 90.00th=[ 88], 95.00th=[ 112], | 99.00th=[ 163], 99.50th=[ 174], 99.90th=[ 215], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 7, max= 136, per=25.40%, avg=40.13, stdev=26.13, samples=293 iops : min= 1, max= 34, avg= 9.38, stdev= 6.58, samples=293 write: IOPS=10, BW=41.6KiB/s (42.6kB/s)(6260KiB/150349msec); 0 zone resets clat (msec): min=7, max=718, avg=58.38, stdev=42.80 lat (msec): min=7, max=718, avg=58.39, stdev=42.80 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 68], 80.00th=[ 85], 90.00th=[ 110], 95.00th=[ 133], | 99.00th=[ 192], 99.50th=[ 245], 99.90th=[ 355], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 120, per=25.16%, avg=41.51, stdev=24.70, samples=294 iops : min= 1, max= 30, avg= 9.73, stdev= 6.21, samples=294 lat (msec) : 10=2.96%, 20=17.19%, 50=46.03%, 100=23.54%, 250=10.06% lat (msec) : 500=0.20%, 750=0.03% cpu : usr=0.07%, sys=1.90%, ctx=4698, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179509: Sat Sep 5 17:14:24 2026 read: IOPS=10, BW=40.2KiB/s (41.1kB/s)(6052KiB/150680msec) clat (msec): min=5, max=298, avg=39.60, stdev=36.53 lat (msec): min=5, max=298, avg=39.60, stdev=36.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 57], 90.00th=[ 87], 95.00th=[ 112], | 99.00th=[ 180], 99.50th=[ 201], 99.90th=[ 292], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 134, per=25.64%, avg=40.52, stdev=25.77, samples=290 iops : min= 1, max= 33, avg= 9.48, stdev= 6.49, samples=290 write: IOPS=10, BW=41.4KiB/s (42.4kB/s)(6236KiB/150680msec); 0 zone resets clat (msec): min=10, max=729, avg=57.93, stdev=41.69 lat (msec): min=10, max=729, avg=57.94, stdev=41.69 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 54], | 70.00th=[ 66], 80.00th=[ 85], 90.00th=[ 110], 95.00th=[ 133], | 99.00th=[ 194], 99.50th=[ 222], 99.90th=[ 296], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 136, per=24.79%, avg=40.90, stdev=24.62, samples=296 iops : min= 1, max= 34, avg= 9.57, stdev= 6.19, samples=296 lat (msec) : 10=2.51%, 20=16.76%, 50=46.35%, 100=24.22%, 250=9.93% lat (msec) : 500=0.20%, 750=0.03% cpu : usr=0.06%, sys=1.97%, ctx=4765, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=158KiB/s (162kB/s), 39.4KiB/s-40.2KiB/s (40.3kB/s-41.1kB/s), io=23.4MiB (24.6MB), run=150349-151699msec WRITE: bw=166KiB/s (170kB/s), 41.4KiB/s-42.1KiB/s (42.4kB/s-43.1kB/s), io=24.6MiB (25.7MB), run=150349-151699msec 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=179551: Sat Sep 5 17:15:10 2026 read: IOPS=9, BW=154KiB/s (158kB/s)(5920KiB/38421msec) clat (usec): min=40, max=215647, avg=53323.18, stdev=36857.77 lat (usec): min=40, max=215648, avg=53324.40, stdev=36857.72 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 61], 10.00th=[ 101], 20.00th=[ 25297], | 30.00th=[ 33424], 40.00th=[ 40109], 50.00th=[ 47449], 60.00th=[ 57410], | 70.00th=[ 65799], 80.00th=[ 81265], 90.00th=[105382], 95.00th=[122160], | 99.00th=[158335], 99.50th=[177210], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 320, per=24.83%, avg=154.68, stdev=67.41, samples=74 iops : min= 1, max= 20, avg= 8.89, stdev= 4.32, samples=74 write: IOPS=10, BW=166KiB/s (170kB/s)(6368KiB/38421msec); 0 zone resets clat (usec): min=1472, max=231021, avg=46727.31, stdev=45473.73 lat (usec): min=1473, max=231023, avg=46729.91, stdev=45473.96 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1942], 10.00th=[ 3064], 20.00th=[ 6783], | 30.00th=[ 13304], 40.00th=[ 23462], 50.00th=[ 34341], 60.00th=[ 45876], | 70.00th=[ 59507], 80.00th=[ 79168], 90.00th=[113771], 95.00th=[139461], | 99.00th=[202376], 99.50th=[227541], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 434, per=25.24%, avg=165.29, stdev=66.37, samples=75 iops : min= 1, max= 27, avg= 9.56, stdev= 4.23, samples=75 lat (usec) : 50=0.39%, 100=4.17%, 250=0.91%, 750=0.13% lat (msec) : 2=2.60%, 4=4.56%, 10=7.03%, 20=6.90%, 50=31.64% lat (msec) : 100=29.30%, 250=12.37% cpu : usr=0.07%, sys=5.04%, ctx=1710, 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=179552: Sat Sep 5 17:15:10 2026 read: IOPS=9, BW=150KiB/s (154kB/s)(5744KiB/38313msec) clat (usec): min=41, max=306677, avg=57327.61, stdev=41496.04 lat (usec): min=42, max=306679, avg=57348.30, stdev=41544.92 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 64], 10.00th=[ 12911], 20.00th=[ 27132], | 30.00th=[ 35914], 40.00th=[ 42206], 50.00th=[ 51643], 60.00th=[ 60031], | 70.00th=[ 68682], 80.00th=[ 79168], 90.00th=[105382], 95.00th=[132645], | 99.00th=[206570], 99.50th=[270533], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 31, max= 320, per=23.91%, avg=148.93, stdev=62.72, samples=75 iops : min= 1, max= 20, avg= 8.52, stdev= 4.03, samples=75 write: IOPS=10, BW=171KiB/s (175kB/s)(6544KiB/38313msec); 0 zone resets clat (usec): min=1566, max=247232, avg=42348.53, stdev=42706.59 lat (usec): min=1568, max=247234, avg=42358.76, stdev=42704.72 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1909], 10.00th=[ 3326], 20.00th=[ 6521], | 30.00th=[ 12518], 40.00th=[ 21365], 50.00th=[ 32375], 60.00th=[ 42206], | 70.00th=[ 51643], 80.00th=[ 64750], 90.00th=[ 94897], 95.00th=[128451], | 99.00th=[193987], 99.50th=[231736], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 31, max= 416, per=26.31%, avg=172.31, stdev=78.92, samples=74 iops : min= 1, max= 26, avg=10.00, stdev= 5.03, samples=74 lat (usec) : 50=0.13%, 100=4.17%, 250=0.13% lat (msec) : 2=3.12%, 4=3.65%, 10=7.81%, 20=7.16%, 50=31.77% lat (msec) : 100=32.16%, 250=9.64%, 500=0.26% cpu : usr=0.07%, sys=4.95%, ctx=1686, 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=179553: Sat Sep 5 17:15:10 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(6256KiB/37919msec) clat (usec): min=41, max=242325, avg=52806.69, stdev=39090.40 lat (usec): min=41, max=242337, avg=52807.94, stdev=39090.50 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 61], 10.00th=[ 78], 20.00th=[ 26084], | 30.00th=[ 33162], 40.00th=[ 40633], 50.00th=[ 46400], 60.00th=[ 53216], | 70.00th=[ 62129], 80.00th=[ 77071], 90.00th=[102237], 95.00th=[117965], | 99.00th=[221250], 99.50th=[238027], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 60, max= 350, per=26.43%, avg=164.69, stdev=70.01, samples=74 iops : min= 3, max= 21, avg= 9.50, stdev= 4.45, samples=74 write: IOPS=9, BW=159KiB/s (163kB/s)(6032KiB/37919msec); 0 zone resets clat (usec): min=1514, max=311232, avg=44897.27, stdev=45806.04 lat (usec): min=1516, max=311234, avg=44899.66, stdev=45805.87 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2311], 10.00th=[ 3785], 20.00th=[ 6652], | 30.00th=[ 12518], 40.00th=[ 19792], 50.00th=[ 32637], 60.00th=[ 43254], | 70.00th=[ 56886], 80.00th=[ 76022], 90.00th=[107480], 95.00th=[133694], | 99.00th=[214959], 99.50th=[233833], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 31, max= 412, per=24.52%, avg=160.58, stdev=73.83, samples=72 iops : min= 1, max= 25, avg= 9.26, stdev= 4.66, samples=72 lat (usec) : 50=0.78%, 100=4.69%, 250=0.13%, 500=0.26% lat (msec) : 2=2.34%, 4=3.26%, 10=7.94%, 20=8.07%, 50=32.94% lat (msec) : 100=28.65%, 250=10.81%, 500=0.13% cpu : usr=0.06%, sys=5.20%, ctx=1731, 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=179554: Sat Sep 5 17:15:10 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(6032KiB/37291msec) clat (usec): min=36, max=283938, avg=51770.94, stdev=38672.75 lat (usec): min=36, max=283938, avg=51772.09, stdev=38672.75 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 70], 20.00th=[ 23200], | 30.00th=[ 30540], 40.00th=[ 40109], 50.00th=[ 47973], 60.00th=[ 54789], | 70.00th=[ 63177], 80.00th=[ 78119], 90.00th=[101188], 95.00th=[116917], | 99.00th=[179307], 99.50th=[219153], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 31, max= 343, per=26.13%, avg=162.78, stdev=69.70, samples=72 iops : min= 1, max= 21, avg= 9.37, stdev= 4.41, samples=72 write: IOPS=10, BW=168KiB/s (172kB/s)(6256KiB/37291msec); 0 zone resets clat (usec): min=1561, max=207983, avg=44410.65, stdev=42016.10 lat (usec): min=1563, max=207985, avg=44412.95, stdev=42016.12 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 1975], 10.00th=[ 3458], 20.00th=[ 7701], | 30.00th=[ 13829], 40.00th=[ 22152], 50.00th=[ 32900], 60.00th=[ 43779], | 70.00th=[ 56886], 80.00th=[ 77071], 90.00th=[103285], 95.00th=[131597], | 99.00th=[179307], 99.50th=[204473], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 444, per=25.57%, avg=167.48, stdev=80.38, samples=73 iops : min= 1, max= 27, avg= 9.67, stdev= 5.11, samples=73 lat (usec) : 50=0.52%, 100=5.99%, 250=0.39%, 500=0.13% lat (msec) : 2=2.73%, 4=3.26%, 10=6.51%, 20=7.94%, 50=32.16% lat (msec) : 100=29.69%, 250=10.55%, 500=0.13% cpu : usr=0.08%, sys=5.15%, ctx=1686, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=623KiB/s (638kB/s), 150KiB/s-165KiB/s (154kB/s-169kB/s), io=23.4MiB (24.5MB), run=37291-38421msec WRITE: bw=656KiB/s (672kB/s), 159KiB/s-171KiB/s (163kB/s-175kB/s), io=24.6MiB (25.8MB), run=37291-38421msec fio: pid=179557, err=5/file:backend.c:481, func=full resid, error=Input/output error fio: pid=179556, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=179555: Sat Sep 5 17:15:20 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5920KiB/47536msec) clat (msec): min=5, max=366, avg=51.35, stdev=51.07 lat (msec): min=5, max=366, avg=51.35, stdev=51.07 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 57], 80.00th=[ 79], 90.00th=[ 113], 95.00th=[ 171], | 99.00th=[ 222], 99.50th=[ 317], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 30, max= 416, per=28.96%, avg=123.08, stdev=93.40, samples=91 iops : min= 1, max= 26, avg= 6.90, stdev= 5.87, samples=91 write: IOPS=8, BW=134KiB/s (137kB/s)(6368KiB/47536msec); 0 zone resets clat (msec): min=12, max=445, avg=71.45, stdev=57.42 lat (msec): min=12, max=445, avg=71.45, stdev=57.42 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 65], | 70.00th=[ 81], 80.00th=[ 116], 90.00th=[ 157], 95.00th=[ 186], | 99.00th=[ 259], 99.50th=[ 275], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 31, max= 446, per=30.84%, avg=137.25, stdev=101.30, samples=89 iops : min= 1, max= 27, avg= 7.78, stdev= 6.38, samples=89 lat (msec) : 10=2.34%, 20=15.89%, 50=39.06%, 100=23.70%, 250=18.23% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.75%, ctx=1294, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179556: Sat Sep 5 17:15:20 2026 read: IOPS=6, BW=101KiB/s (103kB/s)(4416KiB/43915msec) clat (msec): min=5, max=426, avg=61.12, stdev=59.82 lat (msec): min=5, max=426, avg=61.12, stdev=59.81 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 28], 50.00th=[ 36], 60.00th=[ 48], | 70.00th=[ 68], 80.00th=[ 107], 90.00th=[ 153], 95.00th=[ 176], | 99.00th=[ 253], 99.50th=[ 292], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 29, max= 479, per=26.17%, avg=111.24, stdev=93.77, samples=76 iops : min= 1, max= 29, avg= 6.13, stdev= 5.86, samples=76 write: IOPS=6, BW=110KiB/s (112kB/s)(4816KiB/43915msec); 0 zone resets clat (msec): min=16, max=400, avg=88.74, stdev=64.18 lat (msec): min=16, max=400, avg=88.74, stdev=64.18 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 44], 40.00th=[ 55], 50.00th=[ 73], 60.00th=[ 95], | 70.00th=[ 110], 80.00th=[ 132], 90.00th=[ 174], 95.00th=[ 213], | 99.00th=[ 288], 99.50th=[ 393], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 29, max= 380, per=25.43%, avg=113.16, stdev=78.88, samples=82 iops : min= 1, max= 23, avg= 6.24, stdev= 4.94, samples=82 lat (msec) : 10=2.08%, 20=11.07%, 50=34.26%, 100=22.66%, 250=28.03% lat (msec) : 500=1.73% cpu : usr=0.05%, sys=1.44%, ctx=896, majf=0, minf=20 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=277,301,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179557: Sat Sep 5 17:15:20 2026 read: IOPS=5, BW=94.7KiB/s (97.0kB/s)(3856KiB/40700msec) clat (msec): min=9, max=324, avg=69.73, stdev=56.44 lat (msec): min=9, max=324, avg=69.73, stdev=56.44 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 65], | 70.00th=[ 77], 80.00th=[ 100], 90.00th=[ 146], 95.00th=[ 184], | 99.00th=[ 266], 99.50th=[ 321], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 349, per=22.34%, avg=94.94, stdev=63.44, samples=79 iops : min= 1, max= 21, avg= 5.11, stdev= 4.00, samples=79 write: IOPS=5, BW=91.0KiB/s (94.2kB/s)(3744KiB/40700msec); 0 zone resets clat (msec): min=19, max=353, avg=100.99, stdev=60.13 lat (msec): min=19, max=353, avg=101.00, stdev=60.13 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 32], 10.00th=[ 40], 20.00th=[ 50], | 30.00th=[ 62], 40.00th=[ 74], 50.00th=[ 84], 60.00th=[ 103], | 70.00th=[ 124], 80.00th=[ 150], 90.00th=[ 182], 95.00th=[ 226], | 99.00th=[ 275], 99.50th=[ 279], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 30, max= 253, per=20.67%, avg=92.00, stdev=48.65, samples=79 iops : min= 1, max= 15, avg= 4.94, stdev= 3.05, samples=79 lat (msec) : 10=0.21%, 20=3.57%, 50=29.62%, 100=36.76%, 250=27.10% lat (msec) : 500=2.52% cpu : usr=0.03%, sys=1.23%, ctx=674, majf=0, minf=20 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=242,234,0,0 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=179558: Sat Sep 5 17:15:20 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(6032KiB/47447msec) clat (msec): min=5, max=421, avg=49.47, stdev=52.16 lat (msec): min=5, max=421, avg=49.47, stdev=52.16 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 71], 90.00th=[ 121], 95.00th=[ 159], | 99.00th=[ 251], 99.50th=[ 292], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 30, max= 512, per=31.11%, avg=132.20, stdev=109.81, samples=88 iops : min= 1, max= 32, avg= 7.45, stdev= 6.94, samples=88 write: IOPS=8, BW=132KiB/s (135kB/s)(6256KiB/47447msec); 0 zone resets clat (msec): min=10, max=401, avg=72.83, stdev=60.30 lat (msec): min=10, max=401, avg=72.83, stdev=60.29 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 51], 60.00th=[ 66], | 70.00th=[ 84], 80.00th=[ 117], 90.00th=[ 155], 95.00th=[ 188], | 99.00th=[ 275], 99.50th=[ 292], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 30, max= 507, per=29.83%, avg=132.73, stdev=106.35, samples=91 iops : min= 1, max= 31, avg= 7.49, stdev= 6.69, samples=91 lat (msec) : 10=2.99%, 20=14.97%, 50=42.45%, 100=20.05%, 250=18.23% lat (msec) : 500=1.30% cpu : usr=0.05%, sys=1.79%, ctx=1305, 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=425KiB/s (436kB/s), 94.7KiB/s-127KiB/s (97.0kB/s-130kB/s), io=19.8MiB (20.7MB), run=40700-47536msec WRITE: bw=446KiB/s (456kB/s), 91.0KiB/s-134KiB/s (94.2kB/s-137kB/s), io=20.7MiB (21.7MB), run=40700-47536msec 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=179570: Sat Sep 5 17:15:32 2026 read: IOPS=2, BW=2284KiB/s (2338kB/s)(7168KiB/3139msec) clat (usec): min=718, max=227280, avg=146533.83, stdev=101498.79 lat (usec): min=718, max=227283, avg=146535.23, stdev=101499.20 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 717], 10.00th=[ 717], 20.00th=[ 791], | 30.00th=[164627], 40.00th=[164627], 50.00th=[204473], 60.00th=[206570], | 70.00th=[206570], 80.00th=[221250], 90.00th=[227541], 95.00th=[227541], | 99.00th=[227541], 99.50th=[227541], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 1932, max= 4517, per=55.25%, avg=2816.33, stdev=1473.21, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1631KiB/s (1670kB/s)(5120KiB/3139msec); 0 zone resets clat (msec): min=307, max=656, avg=414.84, stdev=140.48 lat (msec): min=307, max=656, avg=414.90, stdev=140.47 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1932, max= 2039, per=28.02%, avg=1999.33, stdev=58.62, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=41.67%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=18.01%, ctx=116, 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=179571: Sat Sep 5 17:15:32 2026 read: IOPS=0, BW=510KiB/s (522kB/s)(2048KiB/4018msec) clat (msec): min=237, max=335, avg=286.86, stdev=69.27 lat (msec): min=237, max=335, avg=286.86, stdev=69.27 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 1526, max= 2027, per=34.85%, avg=1776.50, stdev=354.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2549KiB/s (2610kB/s)(10.0MiB/4018msec); 0 zone resets clat (msec): min=129, max=556, avg=334.70, stdev=132.84 lat (msec): min=130, max=557, avg=335.26, stdev=133.25 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 188], | 30.00th=[ 207], 40.00th=[ 288], 50.00th=[ 355], 60.00th=[ 363], | 70.00th=[ 368], 80.00th=[ 443], 90.00th=[ 451], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1932, max= 4031, per=37.54%, avg=2678.67, stdev=1036.35, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=33.33%, 500=58.33%, 750=8.33% cpu : usr=0.00%, sys=21.96%, ctx=190, 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=179572: Sat Sep 5 17:15:32 2026 read: IOPS=2, BW=2150KiB/s (2201kB/s)(6144KiB/2858msec) clat (usec): min=638, max=393500, avg=119703.79, stdev=164665.99 lat (usec): min=640, max=393502, avg=119705.03, stdev=164665.74 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 881], | 30.00th=[ 881], 40.00th=[ 1237], 50.00th=[ 1237], 60.00th=[ 74974], | 70.00th=[246416], 80.00th=[246416], 90.00th=[392168], 95.00th=[392168], | 99.00th=[392168], 99.50th=[392168], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 2027, max= 4079, per=66.09%, avg=3368.67, stdev=1162.59, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=2, BW=2150KiB/s (2201kB/s)(6144KiB/2858msec); 0 zone resets clat (msec): min=215, max=655, avg=340.82, stdev=162.79 lat (msec): min=216, max=655, avg=341.19, stdev=162.53 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 317], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1532, max= 2039, per=26.71%, avg=1906.00, stdev=213.14, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 2=8.33%, 100=8.33%, 250=25.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=16.59%, ctx=107, 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=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=179573: Sat Sep 5 17:15:32 2026 read: IOPS=1, BW=1539KiB/s (1576kB/s)(5120KiB/3327msec) clat (usec): min=585, max=249826, avg=79037.23, stdev=112830.62 lat (usec): min=587, max=249827, avg=79038.52, stdev=112830.49 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 586], | 30.00th=[ 734], 40.00th=[ 734], 50.00th=[ 3589], 60.00th=[ 3589], | 70.00th=[139461], 80.00th=[139461], 90.00th=[250610], 95.00th=[250610], | 99.00th=[250610], 99.50th=[250610], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2154KiB/s (2206kB/s)(7168KiB/3327msec); 0 zone resets clat (msec): min=110, max=504, avg=402.48, stdev=133.56 lat (msec): min=110, max=504, avg=402.59, stdev=133.56 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 393], | 30.00th=[ 435], 40.00th=[ 435], 50.00th=[ 439], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 485], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 1481, max= 3864, per=32.00%, avg=2283.00, stdev=914.60, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 250=25.00%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=18.07%, ctx=128, 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=5097KiB/s (5219kB/s), 510KiB/s-2284KiB/s (522kB/s-2338kB/s), io=20.0MiB (20.0MB), run=2858-4018msec WRITE: bw=7136KiB/s (7307kB/s), 1631KiB/s-2549KiB/s (1670kB/s-2610kB/s), io=28.0MiB (29.4MB), run=2858-4018msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179575: Sat Sep 5 17:15:33 2026 read: IOPS=1, BW=1661KiB/s (1701kB/s)(7168KiB/4315msec) clat (msec): min=111, max=853, avg=309.66, stdev=254.78 lat (msec): min=111, max=853, avg=309.66, stdev=254.78 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 130], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 224], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 334], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1875, max= 4015, per=50.23%, avg=2384.00, stdev=913.88, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1187KiB/s (1215kB/s)(5120KiB/4315msec); 0 zone resets clat (msec): min=156, max=768, avg=396.49, stdev=284.97 lat (msec): min=156, max=768, avg=396.58, stdev=284.97 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1976, max= 4071, per=40.57%, avg=2695.33, stdev=1191.78, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=8.34%, ctx=143, 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=179576: Sat Sep 5 17:15:33 2026 read: IOPS=0, BW=480KiB/s (492kB/s)(2048KiB/4263msec) clat (usec): min=113127, max=113684, avg=113406.08, stdev=393.47 lat (usec): min=113129, max=113687, avg=113408.17, stdev=394.47 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 114], | 70.00th=[ 114], 80.00th=[ 114], 90.00th=[ 114], 95.00th=[ 114], | 99.00th=[ 114], 99.50th=[ 114], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 1946, max= 2048, per=42.08%, avg=1997.00, stdev=72.12, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2402KiB/s (2460kB/s)(10.0MiB/4263msec); 0 zone resets clat (msec): min=99, max=819, avg=388.88, stdev=249.77 lat (msec): min=99, max=819, avg=389.09, stdev=249.71 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 178], | 30.00th=[ 184], 40.00th=[ 186], 50.00th=[ 266], 60.00th=[ 338], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 651], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1976, max= 6144, per=45.72%, avg=3037.33, stdev=1726.80, samples=6 iops : min= 1, max= 6, avg= 2.17, stdev= 2.04, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=8.85%, ctx=169, 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=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=179578: Sat Sep 5 17:15:33 2026 read: IOPS=1, BW=1537KiB/s (1574kB/s)(6144KiB/3998msec) clat (msec): min=106, max=657, avg=298.95, stdev=219.58 lat (msec): min=106, max=657, avg=298.95, stdev=219.58 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 300], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1976, max= 2048, per=42.55%, avg=2019.50, stdev=33.31, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=1, BW=1537KiB/s (1574kB/s)(6144KiB/3998msec); 0 zone resets clat (msec): min=133, max=779, avg=345.03, stdev=225.84 lat (msec): min=133, max=779, avg=345.12, stdev=225.85 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 313], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1670, max= 2048, per=29.43%, avg=1955.00, stdev=160.51, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=4.98%, ctx=94, 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=179579: Sat Sep 5 17:15:33 2026 read: IOPS=1, BW=1228KiB/s (1258kB/s)(5120KiB/4168msec) clat (msec): min=77, max=128, avg=104.33, stdev=22.58 lat (msec): min=77, max=128, avg=104.33, stdev=22.58 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 108], 60.00th=[ 108], | 70.00th=[ 124], 80.00th=[ 124], 90.00th=[ 129], 95.00th=[ 129], | 99.00th=[ 129], 99.50th=[ 129], 99.90th=[ 129], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 2048, max= 6035, per=85.16%, avg=4041.50, stdev=2819.23, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1720KiB/s (1761kB/s)(7168KiB/4168msec); 0 zone resets clat (msec): min=227, max=973, avg=510.85, stdev=277.47 lat (msec): min=227, max=973, avg=511.43, stdev=277.23 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 236], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 472], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 751], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1484, max= 2048, per=28.66%, avg=1904.40, stdev=236.42, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 750=8.33%, 1000=16.67% cpu : usr=0.05%, sys=6.65%, ctx=117, 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=4746KiB/s (4860kB/s), 480KiB/s-1661KiB/s (492kB/s-1701kB/s), io=20.0MiB (20.0MB), run=3998-4315msec WRITE: bw=6645KiB/s (6804kB/s), 1187KiB/s-2402KiB/s (1215kB/s-2460kB/s), io=28.0MiB (29.4MB), run=3998-4315msec 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=179585: Sat Sep 5 17:15:49 2026 read: IOPS=0, BW=2330KiB/s (2386kB/s)(12.0MiB/5273msec) clat (msec): min=863, max=3461, avg=1755.20, stdev=1478.13 lat (msec): min=863, max=3461, avg=1755.20, stdev=1478.13 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 3473], 80.00th=[ 3473], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 8015, max= 8159, per=100.00%, avg=8087.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=8.48%, ctx=259, 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=179586: Sat Sep 5 17:15:49 2026 read: IOPS=0, BW=729KiB/s (747kB/s)(4096KiB/5617msec) clat (nsec): min=3098.8M, max=3098.8M, avg=3098837998.00, stdev= 0.00 lat (nsec): min=3098.8M, max=3098.8M, avg=3098841101.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3104], 5.00th=[ 3104], 10.00th=[ 3104], 20.00th=[ 3104], | 30.00th=[ 3104], 40.00th=[ 3104], 50.00th=[ 3104], 60.00th=[ 3104], | 70.00th=[ 3104], 80.00th=[ 3104], 90.00th=[ 3104], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1458KiB/s (1493kB/s)(8192KiB/5617msec); 0 zone resets clat (msec): min=981, max=1494, avg=1237.71, stdev=362.77 lat (msec): min=981, max=1495, avg=1238.63, stdev=362.98 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 1502], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.18%, ctx=570, 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=179587: Sat Sep 5 17:15:49 2026 write: IOPS=0, BW=2350KiB/s (2406kB/s)(12.0MiB/5229msec); 0 zone resets clat (msec): min=580, max=2823, avg=1712.47, stdev=1121.62 lat (msec): min=580, max=2823, avg=1713.29, stdev=1121.50 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 1737], 50.00th=[ 1737], 60.00th=[ 1737], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 7953, max= 8143, per=100.00%, avg=8048.00, stdev=134.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.06%, sys=2.83%, ctx=58, 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=179588: Sat Sep 5 17:15:49 2026 write: IOPS=0, BW=2214KiB/s (2268kB/s)(12.0MiB/5549msec); 0 zone resets clat (msec): min=1253, max=2846, avg=1846.95, stdev=871.02 lat (msec): min=1255, max=2848, avg=1848.88, stdev=870.71 clat percentiles (msec): | 1.00th=[ 1250], 5.00th=[ 1250], 10.00th=[ 1250], 20.00th=[ 1250], | 30.00th=[ 1250], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1435], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 7953, max= 8143, per=100.00%, avg=8048.00, stdev=134.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.18%, ctx=75, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2917KiB/s (2987kB/s), 729KiB/s-2330KiB/s (747kB/s-2386kB/s), io=16.0MiB (16.8MB), run=5273-5617msec WRITE: bw=5834KiB/s (5974kB/s), 1458KiB/s-2350KiB/s (1493kB/s-2406kB/s), io=32.0MiB (33.6MB), run=5229-5617msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179590: Sat Sep 5 17:15:50 2026 read: IOPS=0, BW=2173KiB/s (2225kB/s)(12.0MiB/5655msec) clat (msec): min=916, max=3320, avg=1882.42, stdev=1269.30 lat (msec): min=916, max=3320, avg=1882.42, stdev=1269.30 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 1418], 50.00th=[ 1418], 60.00th=[ 1418], | 70.00th=[ 3306], 80.00th=[ 3306], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 7627, max= 8031, per=100.00%, avg=7829.00, stdev=285.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.96%, ctx=64, 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=179591: Sat Sep 5 17:15:50 2026 read: IOPS=0, BW=691KiB/s (708kB/s)(4096KiB/5925msec) clat (nsec): min=4190.7M, max=4190.7M, avg=4190725581.00, stdev= 0.00 lat (nsec): min=4190.7M, max=4190.7M, avg=4190728640.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4178], 5.00th=[ 4178], 10.00th=[ 4178], 20.00th=[ 4178], | 30.00th=[ 4178], 40.00th=[ 4178], 50.00th=[ 4178], 60.00th=[ 4178], | 70.00th=[ 4178], 80.00th=[ 4178], 90.00th=[ 4178], 95.00th=[ 4178], | 99.00th=[ 4178], 99.50th=[ 4178], 99.90th=[ 4178], 99.95th=[ 4178], | 99.99th=[ 4178] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1383KiB/s (1416kB/s)(8192KiB/5925msec); 0 zone resets clat (msec): min=253, max=1472, avg=863.35, stdev=861.95 lat (msec): min=254, max=1474, avg=864.69, stdev=863.02 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 1469], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 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) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.77%, ctx=47, 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=179592: Sat Sep 5 17:15:50 2026 write: IOPS=0, BW=2068KiB/s (2118kB/s)(12.0MiB/5942msec); 0 zone resets clat (msec): min=274, max=5288, avg=1978.97, stdev=2866.58 lat (msec): min=274, max=5288, avg=1979.47, stdev=2866.53 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 5269], 80.00th=[ 5269], 90.00th=[ 5269], 95.00th=[ 5269], | 99.00th=[ 5269], 99.50th=[ 5269], 99.90th=[ 5269], 99.95th=[ 5269], | 99.99th=[ 5269] bw ( KiB/s): min=16253, max=16253, per=100.00%, avg=16253.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.34%, ctx=63, 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=179593: Sat Sep 5 17:15:50 2026 write: IOPS=0, BW=2143KiB/s (2194kB/s)(12.0MiB/5734msec); 0 zone resets clat (msec): min=367, max=3042, avg=1909.97, stdev=1384.02 lat (msec): min=367, max=3044, avg=1910.93, stdev=1384.65 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 2333], 50.00th=[ 2333], 60.00th=[ 2333], | 70.00th=[ 3037], 80.00th=[ 3037], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] 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%, >=2000=66.67% cpu : usr=0.00%, sys=2.02%, ctx=61, 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=2765KiB/s (2832kB/s), 691KiB/s-2173KiB/s (708kB/s-2225kB/s), io=16.0MiB (16.8MB), run=5655-5925msec WRITE: bw=5515KiB/s (5647kB/s), 1383KiB/s-2143KiB/s (1416kB/s-2194kB/s), io=32.0MiB (33.6MB), run=5734-5942msec