== sanity test 398b: DIO and buffer IO race ============== 03:59:19 (1786953559) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.97572 s, 8.4 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=179551: Mon Aug 17 04:01:39 2026 read: IOPS=12, BW=50.9KiB/s (52.1kB/s)(5992KiB/117798msec) clat (usec): min=38, max=877155, avg=43096.05, stdev=35143.69 lat (usec): min=38, max=877156, avg=43099.80, stdev=35145.23 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11207], 10.00th=[ 16450], 20.00th=[ 21627], | 30.00th=[ 27132], 40.00th=[ 31589], 50.00th=[ 37487], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 59507], 90.00th=[ 74974], 95.00th=[ 91751], | 99.00th=[145753], 99.50th=[162530], 99.90th=[329253], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 103, per=25.41%, avg=50.31, stdev=18.97, samples=232 iops : min= 1, max= 25, avg=11.93, stdev= 4.76, samples=232 write: IOPS=13, BW=53.4KiB/s (54.7kB/s)(6296KiB/117798msec); 0 zone resets clat (usec): min=1149, max=244414, avg=33532.42, stdev=33253.72 lat (usec): min=1150, max=244415, avg=33549.43, stdev=33244.18 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 2089], 20.00th=[ 4359], | 30.00th=[ 7963], 40.00th=[ 17433], 50.00th=[ 25560], 60.00th=[ 32900], | 70.00th=[ 43779], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[ 93848], | 99.00th=[147850], 99.50th=[168821], 99.90th=[225444], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 7, max= 119, per=25.78%, avg=53.37, stdev=22.47, samples=230 iops : min= 1, max= 29, avg=12.70, stdev= 5.64, samples=230 lat (usec) : 50=0.16%, 100=1.43%, 250=0.16%, 500=0.03%, 1000=0.03% lat (msec) : 2=4.88%, 4=4.79%, 10=7.58%, 20=10.97%, 50=42.25% lat (msec) : 100=23.86%, 250=3.78%, 500=0.03%, 1000=0.03% cpu : usr=0.05%, sys=5.59%, ctx=7083, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179553: Mon Aug 17 04:01:39 2026 read: IOPS=12, BW=49.0KiB/s (50.2kB/s)(5940KiB/121182msec) clat (usec): min=42, max=675389, avg=44837.11, stdev=33158.49 lat (usec): min=43, max=675390, avg=44845.55, stdev=33159.17 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 12387], 10.00th=[ 16581], 20.00th=[ 22152], | 30.00th=[ 27919], 40.00th=[ 33424], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 53740], 80.00th=[ 62653], 90.00th=[ 78119], 95.00th=[ 92799], | 99.00th=[147850], 99.50th=[177210], 99.90th=[358613], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 7, max= 88, per=24.70%, avg=48.90, stdev=17.04, samples=237 iops : min= 1, max= 22, avg=11.57, stdev= 4.29, samples=237 write: IOPS=13, BW=52.4KiB/s (53.6kB/s)(6348KiB/121182msec); 0 zone resets clat (usec): min=1082, max=296535, avg=34107.69, stdev=34374.37 lat (usec): min=1083, max=296536, avg=34111.23, stdev=34374.45 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 2089], 20.00th=[ 4293], | 30.00th=[ 8029], 40.00th=[ 17957], 50.00th=[ 25035], 60.00th=[ 32375], | 70.00th=[ 43254], 80.00th=[ 58459], 90.00th=[ 83362], 95.00th=[105382], | 99.00th=[147850], 99.50th=[164627], 99.90th=[231736], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 120, per=25.19%, avg=52.15, stdev=23.41, samples=237 iops : min= 1, max= 30, avg=12.39, stdev= 5.90, samples=237 lat (usec) : 50=0.13%, 100=1.20%, 250=0.07% lat (msec) : 2=4.92%, 4=4.65%, 10=7.16%, 20=11.95%, 50=40.43% lat (msec) : 100=24.77%, 250=4.59%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=5.50%, ctx=7015, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179557: Mon Aug 17 04:01:39 2026 read: IOPS=13, BW=52.0KiB/s (53.3kB/s)(6028KiB/115916msec) clat (usec): min=38, max=650264, avg=42000.39, stdev=32454.87 lat (usec): min=39, max=650265, avg=42001.75, stdev=32454.77 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 8455], 10.00th=[ 15664], 20.00th=[ 21365], | 30.00th=[ 26084], 40.00th=[ 30802], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 57934], 90.00th=[ 72877], 95.00th=[ 88605], | 99.00th=[139461], 99.50th=[187696], 99.90th=[316670], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 7, max= 103, per=26.03%, avg=51.53, stdev=18.52, samples=229 iops : min= 1, max= 25, avg=12.24, stdev= 4.64, samples=229 write: IOPS=13, BW=54.0KiB/s (55.3kB/s)(6260KiB/115916msec); 0 zone resets clat (usec): min=1181, max=264906, avg=33332.31, stdev=34297.03 lat (usec): min=1182, max=264908, avg=33334.98, stdev=34296.13 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1418], 10.00th=[ 2114], 20.00th=[ 4228], | 30.00th=[ 7963], 40.00th=[ 15926], 50.00th=[ 23725], 60.00th=[ 32375], | 70.00th=[ 43254], 80.00th=[ 57934], 90.00th=[ 78119], 95.00th=[102237], | 99.00th=[152044], 99.50th=[175113], 99.90th=[263193], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 7, max= 135, per=25.94%, avg=53.71, stdev=22.70, samples=228 iops : min= 1, max= 33, avg=12.79, stdev= 5.71, samples=228 lat (usec) : 50=0.20%, 100=1.92%, 250=0.16%, 500=0.03%, 750=0.03% lat (msec) : 2=4.79%, 4=4.85%, 10=7.65%, 20=11.49%, 50=41.89% lat (msec) : 100=22.75%, 250=4.07%, 500=0.13%, 750=0.03% cpu : usr=0.08%, sys=5.54%, ctx=6907, 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=179558: Mon Aug 17 04:01:39 2026 read: IOPS=12, BW=51.3KiB/s (52.5kB/s)(6052KiB/118017msec) clat (usec): min=35, max=473879, avg=42067.80, stdev=29256.57 lat (usec): min=35, max=473880, avg=42073.99, stdev=29255.36 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10159], 10.00th=[ 16581], 20.00th=[ 21890], | 30.00th=[ 26084], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 58983], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[135267], 99.50th=[156238], 99.90th=[270533], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 7, max= 126, per=26.02%, avg=51.52, stdev=19.83, samples=230 iops : min= 1, max= 31, avg=12.23, stdev= 5.00, samples=230 write: IOPS=13, BW=52.8KiB/s (54.1kB/s)(6236KiB/118017msec); 0 zone resets clat (usec): min=1145, max=680596, avg=34597.57, stdev=38174.36 lat (usec): min=1146, max=680598, avg=34600.39, stdev=38173.92 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 2040], 20.00th=[ 4178], | 30.00th=[ 8455], 40.00th=[ 16450], 50.00th=[ 25035], 60.00th=[ 33424], | 70.00th=[ 44303], 80.00th=[ 59507], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[143655], 99.50th=[164627], 99.90th=[270533], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 126, per=25.44%, avg=52.67, stdev=21.96, samples=232 iops : min= 1, max= 31, avg=12.52, stdev= 5.52, samples=232 lat (usec) : 50=0.26%, 100=1.53%, 250=0.29%, 500=0.07%, 750=0.03% lat (msec) : 2=4.95%, 4=5.01%, 10=6.58%, 20=11.17%, 50=42.19% lat (msec) : 100=23.70%, 250=4.07%, 500=0.13%, 750=0.03% cpu : usr=0.06%, sys=5.64%, ctx=6849, 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=198KiB/s (203kB/s), 49.0KiB/s-52.0KiB/s (50.2kB/s-53.3kB/s), io=23.4MiB (24.6MB), run=115916-121182msec WRITE: bw=207KiB/s (212kB/s), 52.4KiB/s-54.0KiB/s (53.6kB/s-55.3kB/s), io=24.6MiB (25.7MB), run=115916-121182msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179552: Mon Aug 17 04:02:23 2026 read: IOPS=9, BW=36.5KiB/s (37.3kB/s)(5992KiB/164309msec) clat (msec): min=5, max=891, avg=43.76, stdev=40.47 lat (msec): min=5, max=891, avg=43.77, stdev=40.47 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 62], 90.00th=[ 87], 95.00th=[ 116], | 99.00th=[ 165], 99.50th=[ 205], 99.90th=[ 275], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 126, per=25.24%, avg=36.34, stdev=20.99, samples=321 iops : min= 1, max= 31, avg= 8.42, stdev= 5.28, samples=321 write: IOPS=9, BW=38.3KiB/s (39.2kB/s)(6296KiB/164309msec); 0 zone resets clat (msec): min=12, max=360, avg=62.47, stdev=39.37 lat (msec): min=12, max=360, avg=62.48, stdev=39.37 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 51], 60.00th=[ 60], | 70.00th=[ 71], 80.00th=[ 90], 90.00th=[ 115], 95.00th=[ 136], | 99.00th=[ 201], 99.50th=[ 224], 99.90th=[ 284], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 111, per=25.18%, avg=38.03, stdev=19.84, samples=322 iops : min= 1, max= 27, avg= 8.84, stdev= 4.99, samples=322 lat (msec) : 10=0.91%, 20=11.39%, 50=48.60%, 100=27.47%, 250=11.33% lat (msec) : 500=0.26%, 1000=0.03% cpu : usr=0.05%, sys=2.21%, ctx=4905, 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=179554: Mon Aug 17 04:02:23 2026 read: IOPS=8, BW=35.9KiB/s (36.8kB/s)(5940KiB/165417msec) clat (msec): min=5, max=653, avg=42.83, stdev=37.45 lat (msec): min=5, max=653, avg=42.83, stdev=37.44 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 88], 95.00th=[ 117], | 99.00th=[ 178], 99.50th=[ 194], 99.90th=[ 300], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 7, max= 110, per=25.10%, avg=36.15, stdev=22.43, samples=319 iops : min= 1, max= 27, avg= 8.38, stdev= 5.65, samples=319 write: IOPS=9, BW=38.4KiB/s (39.3kB/s)(6348KiB/165417msec); 0 zone resets clat (msec): min=11, max=332, avg=63.89, stdev=40.93 lat (msec): min=11, max=332, avg=63.89, stdev=40.93 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 73], 80.00th=[ 91], 90.00th=[ 117], 95.00th=[ 144], | 99.00th=[ 222], 99.50th=[ 247], 99.90th=[ 288], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 111, per=25.18%, avg=38.03, stdev=19.62, samples=325 iops : min= 1, max= 27, avg= 8.84, stdev= 4.92, samples=325 lat (msec) : 10=1.01%, 20=11.82%, 50=46.61%, 100=28.84%, 250=11.46% lat (msec) : 500=0.23%, 750=0.03% cpu : usr=0.06%, sys=2.20%, ctx=4873, 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=179555: Mon Aug 17 04:02:23 2026 read: IOPS=9, BW=36.4KiB/s (37.2kB/s)(6028KiB/165714msec) clat (msec): min=5, max=284, avg=44.76, stdev=38.07 lat (msec): min=5, max=284, avg=44.76, stdev=38.07 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 65], 90.00th=[ 100], 95.00th=[ 129], | 99.00th=[ 178], 99.50th=[ 224], 99.90th=[ 268], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 125, per=25.48%, avg=36.69, stdev=21.14, samples=320 iops : min= 1, max= 31, avg= 8.51, stdev= 5.30, samples=320 write: IOPS=9, BW=37.8KiB/s (38.7kB/s)(6260KiB/165714msec); 0 zone resets clat (msec): min=9, max=691, avg=62.50, stdev=43.90 lat (msec): min=9, max=691, avg=62.51, stdev=43.90 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 44], 50.00th=[ 51], 60.00th=[ 59], | 70.00th=[ 72], 80.00th=[ 85], 90.00th=[ 112], 95.00th=[ 140], | 99.00th=[ 215], 99.50th=[ 279], 99.90th=[ 409], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 127, per=24.76%, avg=37.39, stdev=20.42, samples=326 iops : min= 1, max= 31, avg= 8.68, stdev= 5.14, samples=326 lat (msec) : 10=1.46%, 20=11.65%, 50=47.43%, 100=27.83%, 250=11.20% lat (msec) : 500=0.39%, 750=0.03% cpu : usr=0.05%, sys=2.17%, ctx=4979, 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=179556: Mon Aug 17 04:02:23 2026 read: IOPS=9, BW=36.7KiB/s (37.6kB/s)(6052KiB/164764msec) clat (msec): min=5, max=294, avg=43.61, stdev=35.96 lat (msec): min=5, max=294, avg=43.61, stdev=35.96 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 64], 90.00th=[ 88], 95.00th=[ 120], | 99.00th=[ 178], 99.50th=[ 213], 99.90th=[ 275], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 143, per=25.90%, avg=37.29, stdev=21.69, samples=316 iops : min= 1, max= 35, avg= 8.66, stdev= 5.44, samples=316 write: IOPS=9, BW=37.8KiB/s (38.8kB/s)(6236KiB/164764msec); 0 zone resets clat (msec): min=11, max=690, avg=63.08, stdev=44.33 lat (msec): min=11, max=690, avg=63.09, stdev=44.33 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 61], | 70.00th=[ 70], 80.00th=[ 87], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 226], 99.50th=[ 271], 99.90th=[ 414], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 111, per=24.90%, avg=37.60, stdev=19.28, samples=323 iops : min= 1, max= 27, avg= 8.73, stdev= 4.84, samples=323 lat (msec) : 10=1.56%, 20=11.69%, 50=46.97%, 100=28.35%, 250=11.04% lat (msec) : 500=0.36%, 750=0.03% cpu : usr=0.05%, sys=2.19%, ctx=4849, 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=145KiB/s (148kB/s), 35.9KiB/s-36.7KiB/s (36.8kB/s-37.6kB/s), io=23.4MiB (24.6MB), run=164309-165714msec WRITE: bw=152KiB/s (155kB/s), 37.8KiB/s-38.4KiB/s (38.7kB/s-39.3kB/s), io=24.6MiB (25.7MB), run=164309-165714msec 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=179619: Mon Aug 17 04:03:15 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(5920KiB/38137msec) clat (usec): min=37, max=201760, avg=53731.53, stdev=34954.39 lat (usec): min=37, max=201762, avg=53732.97, stdev=34954.19 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 63], 10.00th=[ 11863], 20.00th=[ 25822], | 30.00th=[ 33424], 40.00th=[ 41157], 50.00th=[ 48497], 60.00th=[ 58459], | 70.00th=[ 69731], 80.00th=[ 81265], 90.00th=[ 94897], 95.00th=[119014], | 99.00th=[162530], 99.50th=[185598], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 31, max= 377, per=25.40%, avg=154.43, stdev=70.56, samples=74 iops : min= 1, max= 23, avg= 8.84, stdev= 4.47, samples=74 write: IOPS=10, BW=167KiB/s (171kB/s)(6368KiB/38137msec); 0 zone resets clat (usec): min=1508, max=218367, avg=45540.39, stdev=43691.98 lat (usec): min=1509, max=218370, avg=45543.57, stdev=43693.42 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2540], 10.00th=[ 3851], 20.00th=[ 8029], | 30.00th=[ 16057], 40.00th=[ 23987], 50.00th=[ 33817], 60.00th=[ 43254], | 70.00th=[ 57410], 80.00th=[ 71828], 90.00th=[112722], 95.00th=[141558], | 99.00th=[185598], 99.50th=[214959], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 63, max= 349, per=26.12%, avg=166.89, stdev=66.05, samples=74 iops : min= 3, max= 21, avg= 9.64, stdev= 4.17, samples=74 lat (usec) : 50=0.65%, 100=3.65%, 250=0.13% lat (msec) : 2=1.95%, 4=4.04%, 10=6.38%, 20=7.55%, 50=35.03% lat (msec) : 100=30.08%, 250=10.55% cpu : usr=0.07%, sys=4.40%, ctx=1640, 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=179620: Mon Aug 17 04:03:15 2026 read: IOPS=9, BW=146KiB/s (149kB/s)(5744KiB/39389msec) clat (usec): min=41, max=212993, avg=56776.40, stdev=37604.55 lat (usec): min=42, max=212995, avg=56780.92, stdev=37604.67 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 64], 10.00th=[ 15926], 20.00th=[ 29754], | 30.00th=[ 38011], 40.00th=[ 45876], 50.00th=[ 50070], 60.00th=[ 60031], | 70.00th=[ 66847], 80.00th=[ 81265], 90.00th=[ 96994], 95.00th=[129500], | 99.00th=[189793], 99.50th=[206570], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 23, max= 319, per=23.99%, avg=145.88, stdev=67.73, samples=77 iops : min= 1, max= 19, avg= 8.31, stdev= 4.29, samples=77 write: IOPS=10, BW=166KiB/s (170kB/s)(6544KiB/39389msec); 0 zone resets clat (usec): min=1680, max=262242, avg=45730.70, stdev=42886.38 lat (usec): min=1698, max=262244, avg=45743.77, stdev=42877.79 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2212], 10.00th=[ 3720], 20.00th=[ 7767], | 30.00th=[ 12649], 40.00th=[ 22676], 50.00th=[ 34341], 60.00th=[ 43254], | 70.00th=[ 60556], 80.00th=[ 80217], 90.00th=[105382], 95.00th=[127402], | 99.00th=[175113], 99.50th=[191890], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 31, max= 490, per=25.94%, avg=165.77, stdev=76.93, samples=77 iops : min= 1, max= 30, avg= 9.56, stdev= 4.85, samples=77 lat (usec) : 50=0.26%, 100=3.39%, 250=0.13%, 500=0.13%, 750=0.13% lat (msec) : 2=2.34%, 4=3.65%, 10=6.77%, 20=8.85%, 50=30.99% lat (msec) : 100=32.03%, 250=11.20%, 500=0.13% cpu : usr=0.04%, sys=4.61%, ctx=1769, 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=179621: Mon Aug 17 04:03:15 2026 read: IOPS=9, BW=159KiB/s (163kB/s)(6256KiB/39243msec) clat (usec): min=41, max=253654, avg=56637.45, stdev=42059.51 lat (usec): min=41, max=253655, avg=56642.66, stdev=42054.46 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 61], 10.00th=[ 81], 20.00th=[ 23725], | 30.00th=[ 34866], 40.00th=[ 42730], 50.00th=[ 50070], 60.00th=[ 60031], | 70.00th=[ 69731], 80.00th=[ 85459], 90.00th=[104334], 95.00th=[129500], | 99.00th=[223347], 99.50th=[244319], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 285, per=26.36%, avg=160.29, stdev=64.20, samples=76 iops : min= 1, max= 17, avg= 9.21, stdev= 4.08, samples=76 write: IOPS=9, BW=154KiB/s (157kB/s)(6032KiB/39243msec); 0 zone resets clat (usec): min=1528, max=244366, avg=44345.63, stdev=39748.98 lat (usec): min=1529, max=244369, avg=44347.92, stdev=39748.86 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1958], 10.00th=[ 3032], 20.00th=[ 8717], | 30.00th=[ 15270], 40.00th=[ 24773], 50.00th=[ 34341], 60.00th=[ 45876], | 70.00th=[ 57410], 80.00th=[ 73925], 90.00th=[102237], 95.00th=[116917], | 99.00th=[162530], 99.50th=[227541], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 31, max= 414, per=24.02%, avg=153.47, stdev=80.95, samples=75 iops : min= 1, max= 25, avg= 8.77, stdev= 5.12, samples=75 lat (usec) : 50=0.39%, 100=5.34%, 1000=0.13% lat (msec) : 2=2.60%, 4=3.52%, 10=5.21%, 20=7.94%, 50=31.38% lat (msec) : 100=31.64%, 250=11.72%, 500=0.13% cpu : usr=0.05%, sys=4.63%, ctx=1726, 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=179623: Mon Aug 17 04:03:15 2026 read: IOPS=9, BW=159KiB/s (163kB/s)(6032KiB/37975msec) clat (usec): min=40, max=277489, avg=55359.61, stdev=40167.40 lat (usec): min=40, max=277491, avg=55360.93, stdev=40167.40 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 98], 20.00th=[ 26608], | 30.00th=[ 35390], 40.00th=[ 43254], 50.00th=[ 49546], 60.00th=[ 57410], | 70.00th=[ 65799], 80.00th=[ 77071], 90.00th=[101188], 95.00th=[131597], | 99.00th=[204473], 99.50th=[244319], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 317, per=26.71%, avg=162.38, stdev=65.71, samples=72 iops : min= 1, max= 19, avg= 9.35, stdev= 4.19, samples=72 write: IOPS=10, BW=165KiB/s (169kB/s)(6256KiB/37975msec); 0 zone resets clat (usec): min=1485, max=334294, avg=43054.16, stdev=42332.60 lat (usec): min=1487, max=334296, avg=43091.13, stdev=42326.50 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 3130], 10.00th=[ 4948], 20.00th=[ 8717], | 30.00th=[ 14746], 40.00th=[ 20055], 50.00th=[ 31065], 60.00th=[ 43779], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 95945], 95.00th=[124257], | 99.00th=[185598], 99.50th=[252707], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 31, max= 397, per=26.18%, avg=167.29, stdev=74.60, samples=73 iops : min= 1, max= 24, avg= 9.64, stdev= 4.74, samples=73 lat (usec) : 50=0.52%, 100=4.43%, 250=0.13% lat (msec) : 2=1.43%, 4=2.21%, 10=8.07%, 20=10.29%, 50=30.60% lat (msec) : 100=32.68%, 250=9.24%, 500=0.39% cpu : usr=0.04%, sys=4.75%, ctx=1762, 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=608KiB/s (623kB/s), 146KiB/s-159KiB/s (149kB/s-163kB/s), io=23.4MiB (24.5MB), run=37975-39389msec WRITE: bw=640KiB/s (655kB/s), 154KiB/s-167KiB/s (157kB/s-171kB/s), io=24.6MiB (25.8MB), run=37975-39389msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179622: Mon Aug 17 04:03:27 2026 read: IOPS=7, BW=116KiB/s (118kB/s)(5920KiB/51179msec) clat (msec): min=5, max=321, avg=54.07, stdev=47.05 lat (msec): min=5, max=321, avg=54.07, stdev=47.05 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 58], 80.00th=[ 75], 90.00th=[ 116], 95.00th=[ 155], | 99.00th=[ 236], 99.50th=[ 284], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 30, max= 447, per=25.35%, avg=117.62, stdev=81.97, samples=98 iops : min= 1, max= 27, avg= 6.54, stdev= 5.13, samples=98 write: IOPS=7, BW=124KiB/s (127kB/s)(6368KiB/51179msec); 0 zone resets clat (msec): min=8, max=319, avg=77.66, stdev=52.71 lat (msec): min=8, max=319, avg=77.67, stdev=52.71 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 43], 40.00th=[ 53], 50.00th=[ 65], 60.00th=[ 79], | 70.00th=[ 91], 80.00th=[ 113], 90.00th=[ 148], 95.00th=[ 190], | 99.00th=[ 271], 99.50th=[ 305], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 21, max= 351, per=25.52%, avg=124.56, stdev=74.76, samples=100 iops : min= 1, max= 21, avg= 6.98, stdev= 4.68, samples=100 lat (msec) : 10=1.30%, 20=8.72%, 50=39.71%, 100=30.73%, 250=18.36% lat (msec) : 500=1.17% cpu : usr=0.05%, sys=1.90%, ctx=1289, 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=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=179624: Mon Aug 17 04:03:27 2026 read: IOPS=6, BW=112KiB/s (115kB/s)(5744KiB/51343msec) clat (msec): min=7, max=332, avg=52.98, stdev=44.91 lat (msec): min=7, max=332, avg=52.98, stdev=44.91 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 58], 80.00th=[ 73], 90.00th=[ 106], 95.00th=[ 148], | 99.00th=[ 218], 99.50th=[ 275], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 21, max= 510, per=25.30%, avg=117.41, stdev=82.34, samples=95 iops : min= 1, max= 31, avg= 6.54, stdev= 5.22, samples=95 write: IOPS=7, BW=127KiB/s (131kB/s)(6544KiB/51343msec); 0 zone resets clat (msec): min=9, max=301, avg=78.86, stdev=51.03 lat (msec): min=9, max=301, avg=78.86, stdev=51.02 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 65], 60.00th=[ 79], | 70.00th=[ 93], 80.00th=[ 118], 90.00th=[ 148], 95.00th=[ 178], | 99.00th=[ 232], 99.50th=[ 275], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 30, max= 476, per=26.54%, avg=129.51, stdev=76.93, samples=98 iops : min= 1, max= 29, avg= 7.30, stdev= 4.82, samples=98 lat (msec) : 10=1.04%, 20=8.46%, 50=39.06%, 100=31.25%, 250=19.40% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.82%, ctx=1290, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179625: Mon Aug 17 04:03:27 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(6256KiB/51577msec) clat (msec): min=5, max=424, avg=56.02, stdev=48.76 lat (msec): min=5, max=424, avg=56.02, stdev=48.76 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 48], | 70.00th=[ 61], 80.00th=[ 81], 90.00th=[ 120], 95.00th=[ 142], | 99.00th=[ 230], 99.50th=[ 313], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 30, max= 476, per=26.80%, avg=124.36, stdev=84.79, samples=99 iops : min= 1, max= 29, avg= 6.97, stdev= 5.32, samples=99 write: IOPS=7, BW=117KiB/s (120kB/s)(6032KiB/51577msec); 0 zone resets clat (msec): min=15, max=288, avg=77.78, stdev=51.12 lat (msec): min=15, max=288, avg=77.79, stdev=51.11 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 45], 40.00th=[ 52], 50.00th=[ 64], 60.00th=[ 74], | 70.00th=[ 89], 80.00th=[ 111], 90.00th=[ 159], 95.00th=[ 184], | 99.00th=[ 239], 99.50th=[ 284], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 415, per=24.68%, avg=120.45, stdev=68.28, samples=97 iops : min= 1, max= 25, avg= 6.73, stdev= 4.30, samples=97 lat (msec) : 10=0.78%, 20=9.11%, 50=39.71%, 100=30.34%, 250=19.27% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.84%, ctx=1322, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179626: Mon Aug 17 04:03:27 2026 read: IOPS=7, BW=118KiB/s (120kB/s)(6032KiB/51308msec) clat (msec): min=7, max=340, avg=57.87, stdev=50.54 lat (msec): min=7, max=340, avg=57.87, stdev=50.54 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 25], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 50], | 70.00th=[ 57], 80.00th=[ 77], 90.00th=[ 123], 95.00th=[ 178], | 99.00th=[ 275], 99.50th=[ 321], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 30, max= 346, per=26.25%, avg=121.80, stdev=66.29, samples=96 iops : min= 1, max= 21, avg= 6.81, stdev= 4.19, samples=96 write: IOPS=7, BW=122KiB/s (125kB/s)(6256KiB/51308msec); 0 zone resets clat (msec): min=11, max=293, avg=74.94, stdev=47.19 lat (msec): min=11, max=293, avg=74.94, stdev=47.19 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 44], 40.00th=[ 53], 50.00th=[ 62], 60.00th=[ 73], | 70.00th=[ 92], 80.00th=[ 112], 90.00th=[ 140], 95.00th=[ 163], | 99.00th=[ 257], 99.50th=[ 275], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 30, max= 415, per=25.73%, avg=125.55, stdev=72.90, samples=97 iops : min= 1, max= 25, avg= 7.04, stdev= 4.58, samples=97 lat (msec) : 10=0.39%, 20=7.29%, 50=41.54%, 100=31.25%, 250=18.36% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.82%, ctx=1270, 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=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=464KiB/s (476kB/s), 112KiB/s-121KiB/s (115kB/s-124kB/s), io=23.4MiB (24.5MB), run=51179-51577msec WRITE: bw=489KiB/s (500kB/s), 117KiB/s-127KiB/s (120kB/s-131kB/s), io=24.6MiB (25.8MB), run=51179-51577msec 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=179639: Mon Aug 17 04:03:42 2026 read: IOPS=1, BW=1896KiB/s (1942kB/s)(7168KiB/3780msec) clat (msec): min=75, max=427, avg=227.53, stdev=128.87 lat (msec): min=75, max=427, avg=227.53, stdev=128.87 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 102], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 203], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 355], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 2043, max= 4145, per=75.09%, avg=3425.00, stdev=1197.20, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1354KiB/s (1387kB/s)(5120KiB/3780msec); 0 zone resets clat (msec): min=315, max=566, avg=427.63, stdev=93.55 lat (msec): min=315, max=566, avg=427.71, stdev=93.55 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1969, max= 2048, per=31.50%, avg=2011.00, stdev=40.36, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=58.33%, 750=8.33% cpu : usr=0.00%, sys=4.50%, ctx=90, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179640: Mon Aug 17 04:03:42 2026 read: IOPS=0, BW=479KiB/s (491kB/s)(2048KiB/4274msec) clat (msec): min=66, max=361, avg=213.98, stdev=209.01 lat (msec): min=66, max=361, avg=213.98, stdev=209.01 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 67], | 30.00th=[ 67], 40.00th=[ 67], 50.00th=[ 67], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1924, max= 1980, per=42.80%, avg=1952.00, stdev=39.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2396KiB/s (2453kB/s)(10.0MiB/4274msec); 0 zone resets clat (msec): min=114, max=750, avg=379.72, stdev=243.51 lat (msec): min=114, max=750, avg=379.82, stdev=243.54 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 136], | 30.00th=[ 142], 40.00th=[ 222], 50.00th=[ 284], 60.00th=[ 355], | 70.00th=[ 468], 80.00th=[ 634], 90.00th=[ 701], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1924, max= 6035, per=40.37%, avg=2577.86, stdev=1525.07, samples=7 iops : min= 1, max= 5, avg= 1.71, stdev= 1.50, samples=7 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=5.50%, ctx=103, 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=179641: Mon Aug 17 04:03:42 2026 read: IOPS=1, BW=1473KiB/s (1508kB/s)(6144KiB/4171msec) clat (msec): min=87, max=877, avg=417.66, stdev=285.79 lat (msec): min=87, max=877, avg=417.66, stdev=285.79 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 447], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1969, max= 4087, per=59.19%, avg=2699.67, stdev=1202.04, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1473KiB/s (1508kB/s)(6144KiB/4171msec); 0 zone resets clat (msec): min=126, max=631, avg=272.69, stdev=189.30 lat (msec): min=126, max=631, avg=272.79, stdev=189.26 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 243], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 2023, max= 2820, per=34.98%, avg=2233.50, stdev=391.15, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=4.27%, ctx=78, 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=179642: Mon Aug 17 04:03:42 2026 read: IOPS=1, BW=1140KiB/s (1168kB/s)(5120KiB/4490msec) clat (msec): min=76, max=648, avg=321.67, stdev=257.88 lat (msec): min=76, max=648, avg=321.67, stdev=257.88 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 182], 60.00th=[ 182], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1980, max= 4023, per=58.84%, avg=2683.67, stdev=1160.39, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1596KiB/s (1635kB/s)(7168KiB/4490msec); 0 zone resets clat (msec): min=81, max=868, avg=402.12, stdev=289.39 lat (msec): min=81, max=870, avg=402.43, stdev=289.80 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 159], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 296], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 625], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 1988, max= 2048, per=31.55%, avg=2014.75, stdev=27.83, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=8.33%, 750=33.33%, 1000=8.33% cpu : usr=0.07%, sys=2.99%, ctx=77, 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=4561KiB/s (4671kB/s), 479KiB/s-1896KiB/s (491kB/s-1942kB/s), io=20.0MiB (20.0MB), run=3780-4490msec WRITE: bw=6386KiB/s (6539kB/s), 1354KiB/s-2396KiB/s (1387kB/s-2453kB/s), io=28.0MiB (29.4MB), run=3780-4490msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179644: Mon Aug 17 04:03:42 2026 read: IOPS=2, BW=2840KiB/s (2908kB/s)(7168KiB/2524msec) clat (msec): min=78, max=268, avg=188.17, stdev=74.23 lat (msec): min=78, max=268, avg=188.18, stdev=74.23 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 128], | 30.00th=[ 132], 40.00th=[ 132], 50.00th=[ 224], 60.00th=[ 230], | 70.00th=[ 230], 80.00th=[ 257], 90.00th=[ 268], 95.00th=[ 268], | 99.00th=[ 268], 99.50th=[ 268], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 2027, max= 4978, per=61.64%, avg=3017.67, stdev=1697.73, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=1, BW=2029KiB/s (2077kB/s)(5120KiB/2524msec); 0 zone resets clat (msec): min=158, max=349, avg=239.47, stdev=73.30 lat (msec): min=159, max=349, avg=239.75, stdev=73.05 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 247], 60.00th=[ 247], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 2027, max= 3856, per=38.57%, avg=2643.67, stdev=1049.96, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=8.33%, 250=58.33%, 500=33.33% cpu : usr=0.00%, sys=23.70%, ctx=286, 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=179645: Mon Aug 17 04:03:42 2026 read: IOPS=0, BW=490KiB/s (501kB/s)(2048KiB/4183msec) clat (usec): min=816, max=518475, avg=259646.09, stdev=366040.03 lat (usec): min=821, max=518478, avg=259650.04, stdev=366038.19 clat percentiles (usec): | 1.00th=[ 816], 5.00th=[ 816], 10.00th=[ 816], 20.00th=[ 816], | 30.00th=[ 816], 40.00th=[ 816], 50.00th=[ 816], 60.00th=[517997], | 70.00th=[517997], 80.00th=[517997], 90.00th=[517997], 95.00th=[517997], | 99.00th=[517997], 99.50th=[517997], 99.90th=[517997], 99.95th=[517997], | 99.99th=[517997] bw ( KiB/s): min= 1605, max= 2007, per=36.89%, avg=1806.00, stdev=284.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2448KiB/s (2507kB/s)(10.0MiB/4183msec); 0 zone resets clat (msec): min=101, max=1078, avg=365.64, stdev=302.96 lat (msec): min=101, max=1078, avg=365.72, stdev=302.96 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 118], | 30.00th=[ 169], 40.00th=[ 209], 50.00th=[ 234], 60.00th=[ 247], | 70.00th=[ 347], 80.00th=[ 575], 90.00th=[ 584], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2043, max= 4055, per=41.45%, avg=2840.80, stdev=1090.24, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (usec) : 1000=8.33% lat (msec) : 250=50.00%, 500=8.33%, 750=25.00%, 2000=8.33% cpu : usr=0.02%, sys=13.53%, ctx=197, 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=179646: Mon Aug 17 04:03:42 2026 read: IOPS=2, BW=2103KiB/s (2154kB/s)(6144KiB/2921msec) clat (usec): min=716, max=242576, avg=137058.03, stdev=84570.04 lat (usec): min=717, max=242578, avg=137059.03, stdev=84570.13 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 717], 10.00th=[ 717], 20.00th=[ 81265], | 30.00th=[ 81265], 40.00th=[149947], 50.00th=[149947], 60.00th=[173016], | 70.00th=[175113], 80.00th=[175113], 90.00th=[242222], 95.00th=[242222], | 99.00th=[242222], 99.50th=[242222], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 2043, max= 4055, per=67.77%, avg=3318.00, stdev=1108.66, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=2, BW=2103KiB/s (2154kB/s)(6144KiB/2921msec); 0 zone resets clat (msec): min=139, max=898, avg=349.47, stdev=286.07 lat (msec): min=139, max=899, avg=349.55, stdev=286.07 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 266], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1928, max= 3271, per=33.81%, avg=2317.25, stdev=637.86, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 1000=8.33% cpu : usr=0.03%, sys=15.58%, ctx=190, 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=179647: Mon Aug 17 04:03:42 2026 read: IOPS=1, BW=1445KiB/s (1479kB/s)(5120KiB/3544msec) clat (usec): min=343, max=335894, avg=123667.33, stdev=169190.28 lat (usec): min=344, max=335896, avg=123668.40, stdev=169190.58 clat percentiles (usec): | 1.00th=[ 343], 5.00th=[ 343], 10.00th=[ 343], 20.00th=[ 343], | 30.00th=[ 343], 40.00th=[ 343], 50.00th=[ 2212], 60.00th=[ 2212], | 70.00th=[278922], 80.00th=[278922], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=2023KiB/s (2071kB/s)(7168KiB/3544msec); 0 zone resets clat (msec): min=171, max=970, avg=417.57, stdev=337.91 lat (msec): min=171, max=970, avg=417.73, stdev=337.90 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 194], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 247], 60.00th=[ 268], | 70.00th=[ 268], 80.00th=[ 844], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1575, max= 4015, per=33.88%, avg=2321.80, stdev=965.97, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 500=16.67% lat (msec) : 4=8.33%, 250=33.33%, 500=25.00%, 1000=16.67% cpu : usr=0.00%, sys=12.96%, ctx=127, 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=4896KiB/s (5014kB/s), 490KiB/s-2840KiB/s (501kB/s-2908kB/s), io=20.0MiB (20.0MB), run=2524-4183msec WRITE: bw=6854KiB/s (7019kB/s), 2023KiB/s-2448KiB/s (2071kB/s-2507kB/s), io=28.0MiB (29.4MB), run=2524-4183msec 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=179654: Mon Aug 17 04:03:57 2026 read: IOPS=1, BW=5528KiB/s (5660kB/s)(12.0MiB/2223msec) clat (msec): min=638, max=754, avg=691.89, stdev=58.74 lat (msec): min=638, max=754, avg=691.89, stdev=58.74 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7876, max= 8175, per=100.00%, avg=8025.50, stdev=211.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=11.21%, ctx=325, 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=179655: Mon Aug 17 04:03:57 2026 read: IOPS=0, BW=1616KiB/s (1655kB/s)(4096KiB/2534msec) clat (nsec): min=521640k, max=521640k, avg=521639837.00, stdev= 0.00 lat (nsec): min=521642k, max=521642k, avg=521642441.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3233KiB/s (3310kB/s)(8192KiB/2534msec); 0 zone resets clat (msec): min=842, max=1081, avg=962.43, stdev=168.95 lat (msec): min=844, max=1082, avg=963.31, stdev=168.19 clat percentiles (msec): | 1.00th=[ 844], 5.00th=[ 844], 10.00th=[ 844], 20.00th=[ 844], | 30.00th=[ 844], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 1083], | 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= 7953, max= 7953, per=82.82%, avg=7953.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.03%, ctx=116, 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=179656: Mon Aug 17 04:03:57 2026 write: IOPS=0, BW=3601KiB/s (3688kB/s)(12.0MiB/3412msec); 0 zone resets clat (msec): min=221, max=2348, avg=1123.26, stdev=1100.03 lat (msec): min=221, max=2349, avg=1123.62, stdev=1100.09 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7968, max= 8159, per=83.97%, avg=8063.50, stdev=135.06, 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=0.21%, sys=4.87%, ctx=68, 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=179657: Mon Aug 17 04:03:57 2026 write: IOPS=1, BW=4793KiB/s (4908kB/s)(12.0MiB/2564msec); 0 zone resets clat (msec): min=259, max=1782, avg=827.21, stdev=832.03 lat (msec): min=260, max=1782, avg=827.64, stdev=831.82 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7907, max= 8159, per=83.65%, avg=8033.00, stdev=178.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.21%, ctx=59, 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=6466KiB/s (6621kB/s), 1616KiB/s-5528KiB/s (1655kB/s-5660kB/s), io=16.0MiB (16.8MB), run=2223-2534msec WRITE: bw=9604KiB/s (9834kB/s), 3233KiB/s-4793KiB/s (3310kB/s-4908kB/s), io=32.0MiB (33.6MB), run=2534-3412msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179658: Mon Aug 17 04:03:57 2026 read: IOPS=1, BW=4865KiB/s (4981kB/s)(12.0MiB/2526msec) clat (msec): min=413, max=1100, avg=829.64, stdev=365.99 lat (msec): min=413, max=1100, avg=829.64, stdev=365.99 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 1099], 80.00th=[ 1099], 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= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.49%, ctx=46, 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=179659: Mon Aug 17 04:03:57 2026 read: IOPS=0, BW=1255KiB/s (1285kB/s)(4096KiB/3263msec) clat (nsec): min=1663.9M, max=1663.9M, avg=1663854975.00, stdev= 0.00 lat (nsec): min=1663.9M, max=1663.9M, avg=1663857305.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1670], 5.00th=[ 1670], 10.00th=[ 1670], 20.00th=[ 1670], | 30.00th=[ 1670], 40.00th=[ 1670], 50.00th=[ 1670], 60.00th=[ 1670], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] 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=2511KiB/s (2571kB/s)(8192KiB/3263msec); 0 zone resets clat (msec): min=647, max=916, avg=781.99, stdev=190.86 lat (msec): min=647, max=917, avg=782.36, stdev=190.91 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8126, max= 8126, per=80.92%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=3.83%, 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=179660: Mon Aug 17 04:03:57 2026 write: IOPS=0, BW=4009KiB/s (4105kB/s)(12.0MiB/3065msec); 0 zone resets clat (msec): min=293, max=2032, avg=988.06, stdev=920.49 lat (msec): min=293, max=2032, avg=988.35, stdev=920.50 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 8143, max= 8143, per=81.09%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.28%, 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=179661: Mon Aug 17 04:03:57 2026 write: IOPS=1, BW=4401KiB/s (4507kB/s)(12.0MiB/2792msec); 0 zone resets clat (msec): min=570, max=1414, avg=880.11, stdev=464.46 lat (msec): min=570, max=1414, avg=881.05, stdev=464.14 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8126, max= 8143, per=81.00%, avg=8134.50, stdev=12.02, 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=0.04%, sys=4.41%, ctx=55, 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=5021KiB/s (5142kB/s), 1255KiB/s-4865KiB/s (1285kB/s-4981kB/s), io=16.0MiB (16.8MB), run=2526-3263msec WRITE: bw=9.81MiB/s (10.3MB/s), 2511KiB/s-4401KiB/s (2571kB/s-4507kB/s), io=32.0MiB (33.6MB), run=2792-3263msec