== sanity test 398b: DIO and buffer IO race ============== 01:53:15 (1789710795) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.66651 s, 18.9 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=147106: Fri Sep 18 01:54:15 2026 read: IOPS=28, BW=116KiB/s (119kB/s)(5992KiB/51707msec) clat (usec): min=36, max=738623, avg=18163.72, stdev=21831.85 lat (usec): min=37, max=738624, avg=18165.06, stdev=21831.75 clat percentiles (usec): | 1.00th=[ 88], 5.00th=[ 4490], 10.00th=[ 7177], 20.00th=[ 9241], | 30.00th=[ 11207], 40.00th=[ 13173], 50.00th=[ 15401], 60.00th=[ 17957], | 70.00th=[ 20841], 80.00th=[ 25035], 90.00th=[ 30802], 95.00th=[ 37487], | 99.00th=[ 63177], 99.50th=[ 74974], 99.90th=[ 90702], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 6, max= 232, per=24.74%, avg=114.81, stdev=35.29, samples=102 iops : min= 1, max= 58, avg=28.36, stdev= 8.89, samples=102 write: IOPS=30, BW=122KiB/s (125kB/s)(6296KiB/51707msec); 0 zone resets clat (usec): min=628, max=129092, avg=15416.02, stdev=12914.51 lat (usec): min=629, max=129093, avg=15417.05, stdev=12914.59 clat percentiles (usec): | 1.00th=[ 848], 5.00th=[ 1975], 10.00th=[ 2737], 20.00th=[ 4146], | 30.00th=[ 5997], 40.00th=[ 9241], 50.00th=[ 12649], 60.00th=[ 15926], | 70.00th=[ 19792], 80.00th=[ 24773], 90.00th=[ 32375], 95.00th=[ 39060], | 99.00th=[ 54789], 99.50th=[ 63177], 99.90th=[ 92799], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 47, max= 256, per=24.99%, avg=121.45, stdev=36.63, samples=101 iops : min= 11, max= 64, avg=30.02, stdev= 9.24, samples=101 lat (usec) : 50=0.07%, 100=0.49%, 250=1.40%, 500=0.10%, 750=0.16% lat (usec) : 1000=0.78% lat (msec) : 2=1.69%, 4=7.16%, 10=21.61%, 20=35.55%, 50=29.13% lat (msec) : 100=1.79%, 250=0.03%, 750=0.03% cpu : usr=0.13%, sys=27.65%, ctx=8723, 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=147107: Fri Sep 18 01:54:15 2026 read: IOPS=29, BW=117KiB/s (119kB/s)(5940KiB/50944msec) clat (usec): min=28, max=151641, avg=17259.52, stdev=10780.18 lat (usec): min=29, max=151642, avg=17260.35, stdev=10780.25 clat percentiles (usec): | 1.00th=[ 85], 5.00th=[ 5342], 10.00th=[ 7111], 20.00th=[ 9110], | 30.00th=[ 11207], 40.00th=[ 13173], 50.00th=[ 15139], 60.00th=[ 17695], | 70.00th=[ 20579], 80.00th=[ 24773], 90.00th=[ 30278], 95.00th=[ 35390], | 99.00th=[ 46924], 99.50th=[ 63177], 99.90th=[ 81265], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 6, max= 207, per=25.09%, avg=116.44, stdev=36.56, samples=101 iops : min= 1, max= 51, avg=28.76, stdev= 9.23, samples=101 write: IOPS=31, BW=125KiB/s (128kB/s)(6348KiB/50944msec); 0 zone resets clat (usec): min=609, max=734455, avg=15807.72, stdev=22306.92 lat (usec): min=609, max=734456, avg=15808.75, stdev=22306.97 clat percentiles (usec): | 1.00th=[ 865], 5.00th=[ 2180], 10.00th=[ 2868], 20.00th=[ 4359], | 30.00th=[ 6456], 40.00th=[ 8979], 50.00th=[ 11863], 60.00th=[ 15139], | 70.00th=[ 19530], 80.00th=[ 24511], 90.00th=[ 32375], 95.00th=[ 40633], | 99.00th=[ 63177], 99.50th=[ 70779], 99.90th=[125305], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 63, max= 256, per=25.83%, avg=125.52, stdev=37.59, samples=100 iops : min= 15, max= 64, avg=31.04, stdev= 9.50, samples=100 lat (usec) : 50=0.29%, 100=0.42%, 250=1.27%, 500=0.07%, 750=0.23% lat (usec) : 1000=0.72% lat (msec) : 2=1.40%, 4=6.90%, 10=22.66%, 20=35.68%, 50=28.84% lat (msec) : 100=1.43%, 250=0.07%, 750=0.03% cpu : usr=0.10%, sys=28.08%, ctx=8768, 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=147108: Fri Sep 18 01:54:15 2026 read: IOPS=29, BW=117KiB/s (120kB/s)(6028KiB/51650msec) clat (usec): min=26, max=155934, avg=17289.26, stdev=11013.29 lat (usec): min=27, max=155935, avg=17290.18, stdev=11013.36 clat percentiles (usec): | 1.00th=[ 89], 5.00th=[ 5342], 10.00th=[ 7308], 20.00th=[ 9241], | 30.00th=[ 11076], 40.00th=[ 13173], 50.00th=[ 15008], 60.00th=[ 17433], | 70.00th=[ 20317], 80.00th=[ 24249], 90.00th=[ 30540], 95.00th=[ 35390], | 99.00th=[ 51643], 99.50th=[ 60031], 99.90th=[107480], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 39, max= 224, per=25.20%, avg=116.93, stdev=37.83, samples=101 iops : min= 9, max= 56, avg=28.89, stdev= 9.53, samples=101 write: IOPS=30, BW=121KiB/s (124kB/s)(6260KiB/51650msec); 0 zone resets clat (usec): min=608, max=769199, avg=16216.54, stdev=22889.23 lat (usec): min=608, max=769201, avg=16219.14, stdev=22889.94 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 2245], 10.00th=[ 2868], 20.00th=[ 4490], | 30.00th=[ 6456], 40.00th=[ 10159], 50.00th=[ 13566], 60.00th=[ 16581], | 70.00th=[ 20055], 80.00th=[ 24249], 90.00th=[ 31589], 95.00th=[ 39060], | 99.00th=[ 60031], 99.50th=[ 73925], 99.90th=[ 95945], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 39, max= 208, per=24.92%, avg=121.13, stdev=36.60, samples=101 iops : min= 9, max= 52, avg=29.94, stdev= 9.25, samples=101 lat (usec) : 50=0.07%, 100=0.59%, 250=1.30%, 500=0.13%, 750=0.29% lat (usec) : 1000=0.26% lat (msec) : 2=1.33%, 4=7.42%, 10=20.38%, 20=37.73%, 50=28.81% lat (msec) : 100=1.60%, 250=0.07%, 1000=0.03% cpu : usr=0.09%, sys=28.04%, ctx=8855, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147109: Fri Sep 18 01:54:15 2026 read: IOPS=29, BW=118KiB/s (120kB/s)(6052KiB/51445msec) clat (usec): min=57, max=114520, avg=17477.26, stdev=10212.17 lat (usec): min=58, max=114521, avg=17478.49, stdev=10212.77 clat percentiles (usec): | 1.00th=[ 94], 5.00th=[ 5538], 10.00th=[ 7570], 20.00th=[ 9372], | 30.00th=[ 11600], 40.00th=[ 13435], 50.00th=[ 15664], 60.00th=[ 17957], | 70.00th=[ 21103], 80.00th=[ 24773], 90.00th=[ 30278], 95.00th=[ 34341], | 99.00th=[ 50070], 99.50th=[ 56361], 99.90th=[104334], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 55, max= 240, per=25.49%, avg=118.27, stdev=36.71, samples=101 iops : min= 13, max= 60, avg=29.23, stdev= 9.27, samples=101 write: IOPS=30, BW=121KiB/s (124kB/s)(6236KiB/51445msec); 0 zone resets clat (usec): min=612, max=735779, avg=15901.38, stdev=22516.07 lat (usec): min=612, max=735781, avg=15902.50, stdev=22516.11 clat percentiles (usec): | 1.00th=[ 783], 5.00th=[ 2147], 10.00th=[ 2769], 20.00th=[ 4293], | 30.00th=[ 6194], 40.00th=[ 9503], 50.00th=[ 12387], 60.00th=[ 15533], | 70.00th=[ 19268], 80.00th=[ 23987], 90.00th=[ 32375], 95.00th=[ 41157], | 99.00th=[ 61080], 99.50th=[ 72877], 99.90th=[116917], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 13, max= 216, per=24.87%, avg=120.85, stdev=36.89, samples=102 iops : min= 3, max= 54, avg=29.87, stdev= 9.30, samples=102 lat (usec) : 100=0.55%, 250=1.17%, 500=0.10%, 750=0.39%, 1000=0.46% lat (msec) : 2=1.40%, 4=7.06%, 10=21.22%, 20=37.21%, 50=29.04% lat (msec) : 100=1.24%, 250=0.13%, 750=0.03% cpu : usr=0.14%, sys=28.18%, ctx=8896, 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=464KiB/s (476kB/s), 116KiB/s-118KiB/s (119kB/s-120kB/s), io=23.4MiB (24.6MB), run=50944-51707msec WRITE: bw=486KiB/s (498kB/s), 121KiB/s-125KiB/s (124kB/s-128kB/s), io=24.6MiB (25.7MB), run=50944-51707msec fio: pid=147102, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=147101: Fri Sep 18 01:54:38 2026 read: IOPS=20, BW=80.5KiB/s (82.5kB/s)(5992KiB/74414msec) clat (msec): min=2, max=752, avg=15.66, stdev=23.63 lat (msec): min=2, max=752, avg=15.66, stdev=23.64 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 22], 90.00th=[ 33], 95.00th=[ 45], | 99.00th=[ 68], 99.50th=[ 89], 99.90th=[ 142], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 15, max= 240, per=25.59%, avg=81.13, stdev=46.91, samples=147 iops : min= 3, max= 60, avg=20.00, stdev=11.86, samples=147 write: IOPS=21, BW=84.6KiB/s (86.6kB/s)(6296KiB/74414msec); 0 zone resets clat (msec): min=12, max=150, avg=32.20, stdev=17.22 lat (msec): min=12, max=150, avg=32.20, stdev=17.22 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 45], 90.00th=[ 56], 95.00th=[ 66], | 99.00th=[ 93], 99.50th=[ 107], 99.90th=[ 134], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 8, max= 200, per=25.64%, avg=85.12, stdev=43.04, samples=147 iops : min= 2, max= 50, avg=20.99, stdev=10.93, samples=147 lat (msec) : 4=4.30%, 10=18.33%, 20=28.58%, 50=39.94%, 100=8.33% lat (msec) : 250=0.49%, 1000=0.03% cpu : usr=0.09%, sys=9.32%, ctx=5929, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=147102: Fri Sep 18 01:54:38 2026 read: IOPS=19, BW=78.5KiB/s (80.4kB/s)(5572KiB/70974msec) clat (msec): min=2, max=739, avg=16.12, stdev=24.23 lat (msec): min=2, max=739, avg=16.12, stdev=24.23 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 22], 90.00th=[ 33], 95.00th=[ 45], | 99.00th=[ 73], 99.50th=[ 89], 99.90th=[ 122], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 8, max= 216, per=24.91%, avg=78.97, stdev=47.16, samples=140 iops : min= 2, max= 54, avg=19.44, stdev=11.93, samples=140 write: IOPS=20, BW=83.5KiB/s (85.5kB/s)(5924KiB/70974msec); 0 zone resets clat (msec): min=11, max=176, avg=32.56, stdev=17.84 lat (msec): min=11, max=176, avg=32.56, stdev=17.84 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 47], 90.00th=[ 56], 95.00th=[ 66], | 99.00th=[ 99], 99.50th=[ 105], 99.90th=[ 144], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 16, max= 192, per=25.30%, avg=84.00, stdev=43.45, samples=140 iops : min= 4, max= 48, avg=20.70, stdev=11.01, samples=140 lat (msec) : 4=4.17%, 10=17.74%, 20=28.83%, 50=39.13%, 100=9.50% lat (msec) : 250=0.56%, 750=0.03% cpu : usr=0.09%, sys=9.50%, ctx=5458, majf=0, minf=19 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=1394,1481,0,0 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=147103: Fri Sep 18 01:54:38 2026 read: IOPS=20, BW=81.1KiB/s (83.0kB/s)(6028KiB/74364msec) clat (msec): min=2, max=110, avg=14.86, stdev=13.11 lat (msec): min=2, max=110, avg=14.86, stdev=13.11 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 32], 95.00th=[ 42], | 99.00th=[ 67], 99.50th=[ 80], 99.90th=[ 108], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 15, max= 216, per=25.93%, avg=82.18, stdev=45.80, samples=146 iops : min= 3, max= 54, avg=20.26, stdev=11.59, samples=146 write: IOPS=21, BW=84.2KiB/s (86.2kB/s)(6260KiB/74364msec); 0 zone resets clat (msec): min=12, max=760, avg=33.03, stdev=25.81 lat (msec): min=12, max=760, avg=33.03, stdev=25.81 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 44], 90.00th=[ 58], 95.00th=[ 68], | 99.00th=[ 100], 99.50th=[ 107], 99.90th=[ 171], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 16, max= 184, per=25.50%, avg=84.67, stdev=42.56, samples=147 iops : min= 4, max= 46, avg=20.88, stdev=10.79, samples=147 lat (msec) : 4=4.20%, 10=18.29%, 20=28.94%, 50=39.62%, 100=8.43% lat (msec) : 250=0.49%, 1000=0.03% cpu : usr=0.10%, sys=9.46%, ctx=5948, 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=147104: Fri Sep 18 01:54:38 2026 read: IOPS=20, BW=81.3KiB/s (83.2kB/s)(6052KiB/74442msec) clat (msec): min=2, max=114, avg=15.12, stdev=13.79 lat (msec): min=2, max=114, avg=15.12, stdev=13.79 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 22], 90.00th=[ 33], 95.00th=[ 45], | 99.00th=[ 67], 99.50th=[ 79], 99.90th=[ 102], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 7, max= 232, per=26.00%, avg=82.41, stdev=45.50, samples=146 iops : min= 1, max= 58, avg=20.32, stdev=11.55, samples=146 write: IOPS=20, BW=83.8KiB/s (85.8kB/s)(6236KiB/74442msec); 0 zone resets clat (msec): min=12, max=765, avg=32.89, stdev=25.83 lat (msec): min=12, max=765, avg=32.89, stdev=25.83 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 45], 90.00th=[ 56], 95.00th=[ 66], | 99.00th=[ 99], 99.50th=[ 122], 99.90th=[ 171], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 24, max= 184, per=25.37%, avg=84.24, stdev=42.53, samples=147 iops : min= 6, max= 46, avg=20.78, stdev=10.78, samples=147 lat (msec) : 4=4.69%, 10=18.68%, 20=27.83%, 50=39.81%, 100=8.43% lat (msec) : 250=0.52%, 1000=0.03% cpu : usr=0.09%, sys=9.46%, ctx=5908, 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=318KiB/s (325kB/s), 78.5KiB/s-81.3KiB/s (80.4kB/s-83.2kB/s), io=23.1MiB (24.2MB), run=70974-74442msec WRITE: bw=332KiB/s (340kB/s), 83.5KiB/s-84.6KiB/s (85.5kB/s-86.6kB/s), io=24.1MiB (25.3MB), run=70974-74442msec 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=147140: Fri Sep 18 01:55:00 2026 read: IOPS=23, BW=371KiB/s (380kB/s)(5920KiB/15972msec) clat (usec): min=32, max=227481, avg=21348.37, stdev=21948.21 lat (usec): min=32, max=227482, avg=21349.39, stdev=21948.34 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 105], | 30.00th=[ 11994], 40.00th=[ 15795], 50.00th=[ 18744], 60.00th=[ 22152], | 70.00th=[ 26608], 80.00th=[ 33424], 90.00th=[ 43779], 95.00th=[ 50070], | 99.00th=[129500], 99.50th=[135267], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 126, max= 563, per=24.42%, avg=362.35, stdev=96.54, samples=31 iops : min= 7, max= 35, avg=22.03, stdev= 6.13, samples=31 write: IOPS=24, BW=399KiB/s (408kB/s)(6368KiB/15972msec); 0 zone resets clat (usec): min=1371, max=215184, avg=20215.02, stdev=22997.86 lat (usec): min=1372, max=215186, avg=20217.65, stdev=22997.31 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1860], 10.00th=[ 2343], 20.00th=[ 3884], | 30.00th=[ 5342], 40.00th=[ 7701], 50.00th=[ 13566], 60.00th=[ 18220], | 70.00th=[ 24249], 80.00th=[ 33424], 90.00th=[ 49021], 95.00th=[ 61080], | 99.00th=[ 87557], 99.50th=[187696], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 127, max= 701, per=25.21%, avg=393.81, stdev=129.38, samples=31 iops : min= 7, max= 43, avg=24.00, stdev= 8.20, samples=31 lat (usec) : 50=1.17%, 100=7.94%, 250=2.34%, 750=0.13% lat (msec) : 2=4.30%, 4=6.90%, 10=12.89%, 20=22.01%, 50=35.16% lat (msec) : 100=6.12%, 250=1.04% cpu : usr=0.15%, sys=13.65%, ctx=1620, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147141: Fri Sep 18 01:55:00 2026 read: IOPS=22, BW=356KiB/s (365kB/s)(5744KiB/16132msec) clat (usec): min=36, max=307759, avg=21584.16, stdev=24337.77 lat (usec): min=36, max=307760, avg=21584.99, stdev=24337.80 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 52], 10.00th=[ 65], 20.00th=[ 113], | 30.00th=[ 11731], 40.00th=[ 15664], 50.00th=[ 18220], 60.00th=[ 22152], | 70.00th=[ 26346], 80.00th=[ 34341], 90.00th=[ 42730], 95.00th=[ 55313], | 99.00th=[ 82314], 99.50th=[147850], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 187, max= 605, per=23.98%, avg=355.94, stdev=113.09, samples=31 iops : min= 11, max= 37, avg=21.65, stdev= 7.05, samples=31 write: IOPS=25, BW=406KiB/s (415kB/s)(6544KiB/16132msec); 0 zone resets clat (usec): min=1334, max=152479, avg=20457.92, stdev=21655.67 lat (usec): min=1334, max=152480, avg=20459.67, stdev=21655.71 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1975], 10.00th=[ 2540], 20.00th=[ 3720], | 30.00th=[ 5342], 40.00th=[ 8455], 50.00th=[ 14091], 60.00th=[ 19792], | 70.00th=[ 25560], 80.00th=[ 34341], 90.00th=[ 46400], 95.00th=[ 57410], | 99.00th=[100140], 99.50th=[131597], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 223, max= 640, per=25.80%, avg=402.94, stdev=111.92, samples=31 iops : min= 13, max= 40, avg=24.55, stdev= 7.06, samples=31 lat (usec) : 50=1.69%, 100=6.51%, 250=2.99%, 500=0.13%, 1000=0.13% lat (msec) : 2=2.86%, 4=9.90%, 10=12.24%, 20=20.70%, 50=35.42% lat (msec) : 100=6.51%, 250=0.78%, 500=0.13% cpu : usr=0.17%, sys=13.22%, ctx=1644, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147142: Fri Sep 18 01:55:00 2026 read: IOPS=25, BW=409KiB/s (419kB/s)(6256KiB/15281msec) clat (usec): min=33, max=189868, avg=19569.22, stdev=19286.98 lat (usec): min=33, max=189869, avg=19570.08, stdev=19286.98 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 98], | 30.00th=[ 11994], 40.00th=[ 15008], 50.00th=[ 18482], 60.00th=[ 21103], | 70.00th=[ 25035], 80.00th=[ 29754], 90.00th=[ 38536], 95.00th=[ 46400], | 99.00th=[ 72877], 99.50th=[183501], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 158, max= 672, per=27.82%, avg=412.79, stdev=110.52, samples=29 iops : min= 9, max= 42, avg=25.21, stdev= 7.04, samples=29 write: IOPS=24, BW=395KiB/s (404kB/s)(6032KiB/15281msec); 0 zone resets clat (usec): min=1385, max=177484, avg=20163.39, stdev=24104.85 lat (usec): min=1388, max=177485, avg=20165.19, stdev=24104.79 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1762], 10.00th=[ 2278], 20.00th=[ 3359], | 30.00th=[ 4293], 40.00th=[ 6128], 50.00th=[ 10683], 60.00th=[ 16909], | 70.00th=[ 25035], 80.00th=[ 35914], 90.00th=[ 49546], 95.00th=[ 60031], | 99.00th=[124257], 99.50th=[162530], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 158, max= 672, per=25.16%, avg=392.97, stdev=123.08, samples=29 iops : min= 9, max= 42, avg=23.93, stdev= 7.82, samples=29 lat (usec) : 50=1.56%, 100=8.98%, 250=1.95%, 500=0.13%, 750=0.13% lat (msec) : 2=3.52%, 4=9.51%, 10=11.85%, 20=22.79%, 50=33.33% lat (msec) : 100=5.21%, 250=1.04% cpu : usr=0.12%, sys=14.61%, ctx=1606, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147143: Fri Sep 18 01:55:00 2026 read: IOPS=23, BW=382KiB/s (391kB/s)(6032KiB/15789msec) clat (usec): min=34, max=222722, avg=21347.32, stdev=24215.35 lat (usec): min=35, max=222723, avg=21348.14, stdev=24215.37 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 49], 10.00th=[ 59], 20.00th=[ 94], | 30.00th=[ 10814], 40.00th=[ 14746], 50.00th=[ 17957], 60.00th=[ 21103], | 70.00th=[ 26870], 80.00th=[ 32900], 90.00th=[ 43254], 95.00th=[ 62653], | 99.00th=[126354], 99.50th=[175113], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 125, max= 603, per=25.61%, avg=380.03, stdev=134.27, samples=30 iops : min= 7, max= 37, avg=23.10, stdev= 8.43, samples=30 write: IOPS=24, BW=396KiB/s (406kB/s)(6256KiB/15789msec); 0 zone resets clat (usec): min=1198, max=207372, avg=19734.97, stdev=22698.00 lat (usec): min=1199, max=207373, avg=19746.23, stdev=22699.58 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1729], 10.00th=[ 2057], 20.00th=[ 3359], | 30.00th=[ 4752], 40.00th=[ 7439], 50.00th=[ 11994], 60.00th=[ 18482], | 70.00th=[ 25035], 80.00th=[ 33817], 90.00th=[ 44303], 95.00th=[ 59507], | 99.00th=[110625], 99.50th=[137364], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 215, max= 672, per=25.56%, avg=399.20, stdev=107.77, samples=30 iops : min= 13, max= 42, avg=24.30, stdev= 6.84, samples=30 lat (usec) : 50=2.73%, 100=7.55%, 250=2.21%, 500=0.91%, 750=0.13% lat (msec) : 2=4.69%, 4=8.33%, 10=11.72%, 20=21.35%, 50=33.59% lat (msec) : 100=5.47%, 250=1.30% cpu : usr=0.11%, sys=13.12%, ctx=1555, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1485KiB/s (1520kB/s), 356KiB/s-409KiB/s (365kB/s-419kB/s), io=23.4MiB (24.5MB), run=15281-16132msec WRITE: bw=1562KiB/s (1600kB/s), 395KiB/s-406KiB/s (404kB/s-415kB/s), io=24.6MiB (25.8MB), run=15281-16132msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147135: Fri Sep 18 01:55:21 2026 read: IOPS=9, BW=158KiB/s (162kB/s)(5920KiB/37386msec) clat (msec): min=5, max=332, avg=22.66, stdev=30.04 lat (msec): min=5, max=332, avg=22.66, stdev=30.04 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 48], 95.00th=[ 63], | 99.00th=[ 161], 99.50th=[ 239], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 570, per=25.68%, avg=164.35, stdev=104.13, samples=71 iops : min= 1, max= 35, avg= 9.72, stdev= 6.51, samples=71 write: IOPS=10, BW=170KiB/s (174kB/s)(6368KiB/37386msec); 0 zone resets clat (msec): min=23, max=343, avg=72.78, stdev=34.97 lat (msec): min=23, max=343, avg=72.78, stdev=34.97 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 36], 10.00th=[ 41], 20.00th=[ 47], | 30.00th=[ 54], 40.00th=[ 58], 50.00th=[ 65], 60.00th=[ 72], | 70.00th=[ 81], 80.00th=[ 96], 90.00th=[ 114], 95.00th=[ 150], | 99.00th=[ 184], 99.50th=[ 271], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 383, per=25.19%, avg=169.81, stdev=73.48, samples=74 iops : min= 1, max= 23, avg=10.07, stdev= 4.64, samples=74 lat (msec) : 10=11.33%, 20=22.92%, 50=23.44%, 100=33.07%, 250=8.85% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=2.61%, ctx=1424, 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=147136: Fri Sep 18 01:55:21 2026 read: IOPS=9, BW=154KiB/s (158kB/s)(5744KiB/37308msec) clat (msec): min=6, max=293, avg=21.21, stdev=23.79 lat (msec): min=6, max=293, avg=21.21, stdev=23.79 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 20], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 54], | 99.00th=[ 111], 99.50th=[ 150], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 447, per=24.75%, avg=158.42, stdev=95.56, samples=72 iops : min= 1, max= 27, avg= 9.35, stdev= 6.03, samples=72 write: IOPS=10, BW=175KiB/s (180kB/s)(6544KiB/37308msec); 0 zone resets clat (msec): min=21, max=322, avg=72.40, stdev=34.66 lat (msec): min=21, max=322, avg=72.41, stdev=34.66 clat percentiles (msec): | 1.00th=[ 29], 5.00th=[ 36], 10.00th=[ 41], 20.00th=[ 47], | 30.00th=[ 54], 40.00th=[ 59], 50.00th=[ 64], 60.00th=[ 72], | 70.00th=[ 80], 80.00th=[ 91], 90.00th=[ 120], 95.00th=[ 134], | 99.00th=[ 192], 99.50th=[ 201], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 63, max= 351, per=25.95%, avg=174.93, stdev=67.24, samples=74 iops : min= 3, max= 21, avg=10.38, stdev= 4.30, samples=74 lat (msec) : 10=11.59%, 20=21.48%, 50=23.70%, 100=35.42%, 250=7.42% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=2.62%, ctx=1431, 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=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=147137: Fri Sep 18 01:55:21 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(6256KiB/36366msec) clat (msec): min=5, max=254, avg=21.37, stdev=21.50 lat (msec): min=5, max=254, avg=21.37, stdev=21.50 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 47], 95.00th=[ 68], | 99.00th=[ 92], 99.50th=[ 128], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 31, max= 473, per=27.72%, avg=177.43, stdev=107.51, samples=70 iops : min= 1, max= 29, avg=10.56, stdev= 6.78, samples=70 write: IOPS=10, BW=166KiB/s (170kB/s)(6032KiB/36366msec); 0 zone resets clat (msec): min=26, max=305, avg=74.12, stdev=35.86 lat (msec): min=26, max=305, avg=74.12, stdev=35.86 clat percentiles (msec): | 1.00th=[ 32], 5.00th=[ 39], 10.00th=[ 43], 20.00th=[ 49], | 30.00th=[ 55], 40.00th=[ 61], 50.00th=[ 66], 60.00th=[ 73], | 70.00th=[ 80], 80.00th=[ 92], 90.00th=[ 112], 95.00th=[ 140], | 99.00th=[ 253], 99.50th=[ 300], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 319, per=24.46%, avg=164.85, stdev=63.23, samples=72 iops : min= 1, max= 19, avg= 9.76, stdev= 4.05, samples=72 lat (msec) : 10=12.37%, 20=22.27%, 50=22.40%, 100=36.07%, 250=6.25% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=2.80%, ctx=1468, 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=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=147138: Fri Sep 18 01:55:21 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(6032KiB/36830msec) clat (msec): min=5, max=208, avg=20.51, stdev=21.15 lat (msec): min=5, max=208, avg=20.51, stdev=21.15 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 16], | 70.00th=[ 19], 80.00th=[ 25], 90.00th=[ 43], 95.00th=[ 66], | 99.00th=[ 103], 99.50th=[ 127], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 31, max= 415, per=26.07%, avg=166.83, stdev=94.49, samples=71 iops : min= 1, max= 25, avg= 9.86, stdev= 6.03, samples=71 write: IOPS=10, BW=170KiB/s (174kB/s)(6256KiB/36830msec); 0 zone resets clat (msec): min=26, max=343, avg=74.22, stdev=38.76 lat (msec): min=26, max=343, avg=74.22, stdev=38.76 clat percentiles (msec): | 1.00th=[ 30], 5.00th=[ 38], 10.00th=[ 42], 20.00th=[ 48], | 30.00th=[ 55], 40.00th=[ 59], 50.00th=[ 64], 60.00th=[ 70], | 70.00th=[ 79], 80.00th=[ 93], 90.00th=[ 116], 95.00th=[ 146], | 99.00th=[ 259], 99.50th=[ 300], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 318, per=25.21%, avg=169.95, stdev=67.48, samples=73 iops : min= 1, max= 19, avg=10.07, stdev= 4.33, samples=73 lat (msec) : 10=13.15%, 20=22.92%, 50=20.31%, 100=34.51%, 250=8.59% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=2.77%, ctx=1405, 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=641KiB/s (656kB/s), 154KiB/s-172KiB/s (158kB/s-176kB/s), io=23.4MiB (24.5MB), run=36366-37386msec WRITE: bw=674KiB/s (690kB/s), 166KiB/s-175KiB/s (170kB/s-180kB/s), io=24.6MiB (25.8MB), run=36366-37386msec 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=147154: Fri Sep 18 01:55:30 2026 read: IOPS=3, BW=3714KiB/s (3803kB/s)(7168KiB/1930msec) clat (usec): min=762, max=216601, avg=129105.48, stdev=73497.42 lat (usec): min=764, max=216602, avg=129106.77, stdev=73497.25 clat percentiles (usec): | 1.00th=[ 766], 5.00th=[ 766], 10.00th=[ 766], 20.00th=[ 83362], | 30.00th=[116917], 40.00th=[116917], 50.00th=[122160], 60.00th=[166724], | 70.00th=[166724], 80.00th=[196084], 90.00th=[217056], 95.00th=[217056], | 99.00th=[217056], 99.50th=[217056], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 2039, max= 5206, per=69.01%, avg=3097.67, stdev=1825.88, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=2, BW=2653KiB/s (2717kB/s)(5120KiB/1930msec); 0 zone resets clat (msec): min=72, max=418, avg=200.43, stdev=158.27 lat (msec): min=72, max=418, avg=200.48, stdev=158.27 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 85], 40.00th=[ 85], 50.00th=[ 109], 60.00th=[ 109], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2039, max= 2048, per=32.52%, avg=2043.50, stdev= 6.36, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (usec) : 1000=8.33% lat (msec) : 100=25.00%, 250=50.00%, 500=16.67% cpu : usr=0.00%, sys=50.08%, ctx=382, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147155: Fri Sep 18 01:55:30 2026 read: IOPS=0, BW=449KiB/s (460kB/s)(2048KiB/4562msec) clat (usec): min=752, max=145562, avg=73157.83, stdev=102396.14 lat (usec): min=754, max=145564, avg=73159.64, stdev=102396.19 clat percentiles (usec): | 1.00th=[ 750], 5.00th=[ 750], 10.00th=[ 750], 20.00th=[ 750], | 30.00th=[ 750], 40.00th=[ 750], 50.00th=[ 750], 60.00th=[145753], | 70.00th=[145753], 80.00th=[145753], 90.00th=[145753], 95.00th=[145753], | 99.00th=[145753], 99.50th=[145753], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 1753, max= 2000, per=41.80%, avg=1876.50, stdev=174.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2245KiB/s (2299kB/s)(10.0MiB/4562msec); 0 zone resets clat (msec): min=151, max=1470, avg=431.86, stdev=403.89 lat (msec): min=151, max=1470, avg=431.95, stdev=403.88 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 174], 40.00th=[ 190], 50.00th=[ 309], 60.00th=[ 313], | 70.00th=[ 334], 80.00th=[ 592], 90.00th=[ 634], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 2031, max= 4087, per=45.21%, avg=2841.00, stdev=1098.17, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (usec) : 1000=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=31.55%, ctx=358, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147156: Fri Sep 18 01:55:30 2026 read: IOPS=1, BW=1825KiB/s (1869kB/s)(6144KiB/3367msec) clat (usec): min=658, max=1465.3k, avg=304374.70, stdev=575491.36 lat (usec): min=659, max=1465.3k, avg=304375.67, stdev=575491.16 clat percentiles (usec): | 1.00th=[ 660], 5.00th=[ 660], 10.00th=[ 660], | 20.00th=[ 676], 30.00th=[ 676], 40.00th=[ 906], | 50.00th=[ 906], 60.00th=[ 164627], 70.00th=[ 193987], | 80.00th=[ 193987], 90.00th=[1468007], 95.00th=[1468007], | 99.00th=[1468007], 99.50th=[1468007], 99.90th=[1468007], | 99.95th=[1468007], 99.99th=[1468007] bw ( KiB/s): min= 2048, max= 8126, per=100.00%, avg=5087.00, stdev=4297.80, samples=2 iops : min= 2, max= 7, avg= 4.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1825KiB/s (1869kB/s)(6144KiB/3367msec); 0 zone resets clat (msec): min=63, max=376, avg=245.99, stdev=116.40 lat (msec): min=63, max=376, avg=246.06, stdev=116.43 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 232], 50.00th=[ 232], 60.00th=[ 317], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 1759, max= 4079, per=52.52%, avg=3300.33, stdev=1334.86, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (usec) : 750=16.67%, 1000=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 2000=8.33% cpu : usr=0.03%, sys=32.86%, ctx=694, 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=147157: Fri Sep 18 01:55:30 2026 read: IOPS=1, BW=1234KiB/s (1264kB/s)(5120KiB/4149msec) clat (usec): min=789, max=349823, avg=167975.35, stdev=123650.31 lat (usec): min=790, max=349824, avg=167976.61, stdev=123650.15 clat percentiles (usec): | 1.00th=[ 791], 5.00th=[ 791], 10.00th=[ 791], 20.00th=[ 791], | 30.00th=[158335], 40.00th=[158335], 50.00th=[160433], 60.00th=[160433], | 70.00th=[168821], 80.00th=[168821], 90.00th=[350225], 95.00th=[350225], | 99.00th=[350225], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 2031, max= 6000, per=89.45%, avg=4015.50, stdev=2806.51, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1728KiB/s (1769kB/s)(7168KiB/4149msec); 0 zone resets clat (msec): min=98, max=1417, avg=443.35, stdev=459.47 lat (msec): min=98, max=1417, avg=443.47, stdev=459.44 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 313], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 550], 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= 2031, max= 6131, per=56.88%, avg=3574.25, stdev=1961.96, samples=4 iops : min= 1, max= 5, avg= 2.75, stdev= 2.06, samples=4 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=31.98%, ctx=529, 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=4489KiB/s (4597kB/s), 449KiB/s-3714KiB/s (460kB/s-3803kB/s), io=20.0MiB (20.0MB), run=1930-4562msec WRITE: bw=6285KiB/s (6436kB/s), 1728KiB/s-2653KiB/s (1769kB/s-2717kB/s), io=28.0MiB (29.4MB), run=1930-4562msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147158: Fri Sep 18 01:55:30 2026 read: IOPS=1, BW=1904KiB/s (1950kB/s)(7168KiB/3764msec) clat (msec): min=65, max=285, avg=183.35, stdev=87.37 lat (msec): min=65, max=285, avg=183.35, stdev=87.37 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 110], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 201], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 271], 90.00th=[ 288], 95.00th=[ 288], | 99.00th=[ 288], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 1793, max= 4096, per=69.18%, avg=2996.75, stdev=1262.88, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1360KiB/s (1393kB/s)(5120KiB/3764msec); 0 zone resets clat (msec): min=124, max=1280, avg=464.70, stdev=464.74 lat (msec): min=124, max=1281, avg=464.80, stdev=464.75 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 2019, max= 4096, per=44.86%, avg=2721.00, stdev=1190.87, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=13.42%, ctx=131, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147159: Fri Sep 18 01:55:30 2026 read: IOPS=0, BW=461KiB/s (472kB/s)(2048KiB/4443msec) clat (msec): min=78, max=164, avg=121.50, stdev=60.98 lat (msec): min=78, max=164, avg=121.50, stdev=60.98 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 79], | 30.00th=[ 79], 40.00th=[ 79], 50.00th=[ 79], 60.00th=[ 165], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 165], 95.00th=[ 165], | 99.00th=[ 165], 99.50th=[ 165], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 1790, max= 2019, per=43.96%, avg=1904.50, stdev=161.93, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2305KiB/s (2360kB/s)(10.0MiB/4443msec); 0 zone resets clat (msec): min=121, max=1621, avg=417.25, stdev=446.79 lat (msec): min=121, max=1621, avg=417.33, stdev=446.80 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 197], | 30.00th=[ 203], 40.00th=[ 209], 50.00th=[ 243], 60.00th=[ 268], | 70.00th=[ 288], 80.00th=[ 384], 90.00th=[ 642], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 1790, max= 4096, per=46.33%, avg=2809.80, stdev=1178.38, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.52, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=10.06%, ctx=113, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147160: Fri Sep 18 01:55:30 2026 read: IOPS=1, BW=1355KiB/s (1387kB/s)(6144KiB/4535msec) clat (msec): min=56, max=384, avg=220.23, stdev=141.72 lat (msec): min=56, max=384, avg=220.23, stdev=141.72 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 60], | 30.00th=[ 60], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 317], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 2019, max= 4096, per=62.81%, avg=2721.00, stdev=1190.87, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1355KiB/s (1387kB/s)(6144KiB/4535msec); 0 zone resets clat (msec): min=133, max=1729, avg=507.93, stdev=612.56 lat (msec): min=133, max=1729, avg=508.00, stdev=612.55 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 326], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 2019, max= 4079, per=44.77%, avg=2715.33, stdev=1181.06, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=16.67%, 250=33.33%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=12.64%, ctx=262, 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=147161: Fri Sep 18 01:55:30 2026 read: IOPS=1, BW=1083KiB/s (1109kB/s)(5120KiB/4727msec) clat (msec): min=39, max=155, avg=103.91, stdev=51.87 lat (msec): min=39, max=155, avg=103.91, stdev=51.87 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 40], 10.00th=[ 40], 20.00th=[ 40], | 30.00th=[ 59], 40.00th=[ 59], 50.00th=[ 122], 60.00th=[ 122], | 70.00th=[ 144], 80.00th=[ 144], 90.00th=[ 157], 95.00th=[ 157], | 99.00th=[ 157], 99.50th=[ 157], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 4079, max= 4096, per=94.36%, avg=4087.50, stdev=12.02, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1516KiB/s (1553kB/s)(7168KiB/4727msec); 0 zone resets clat (msec): min=68, max=2020, avg=559.60, stdev=691.26 lat (msec): min=68, max=2020, avg=559.67, stdev=691.26 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 90], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 271], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 751], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 2039, max= 4096, per=42.14%, avg=2555.50, stdev=1027.01, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (msec) : 50=8.33%, 100=25.00%, 250=33.33%, 500=8.33%, 750=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=9.23%, ctx=145, 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=4333KiB/s (4437kB/s), 461KiB/s-1904KiB/s (472kB/s-1950kB/s), io=20.0MiB (20.0MB), run=3764-4727msec WRITE: bw=6066KiB/s (6211kB/s), 1355KiB/s-2305KiB/s (1387kB/s-2360kB/s), io=28.0MiB (29.4MB), run=3764-4727msec 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=147169: Fri Sep 18 01:55:38 2026 read: IOPS=1, BW=6700KiB/s (6861kB/s)(12.0MiB/1834msec) clat (msec): min=503, max=758, avg=603.40, stdev=135.91 lat (msec): min=503, max=758, avg=603.40, stdev=135.91 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7876, max= 8192, per=100.00%, avg=8034.00, stdev=223.45, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=36.17%, ctx=733, 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=147171: Fri Sep 18 01:55:38 2026 read: IOPS=0, BW=1942KiB/s (1989kB/s)(4096KiB/2109msec) clat (nsec): min=619831k, max=619831k, avg=619831241.00, stdev= 0.00 lat (nsec): min=619834k, max=619834k, avg=619833653.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3884KiB/s (3978kB/s)(8192KiB/2109msec); 0 zone resets clat (msec): min=439, max=890, avg=664.69, stdev=319.01 lat (msec): min=439, max=890, avg=664.96, stdev=319.02 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 894], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7876, max= 7876, per=57.18%, avg=7876.00, 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%, 1000=33.33% cpu : usr=0.00%, sys=15.51%, ctx=576, 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=147173: Fri Sep 18 01:55:38 2026 write: IOPS=1, BW=5165KiB/s (5289kB/s)(12.0MiB/2379msec); 0 zone resets clat (msec): min=428, max=1128, avg=758.14, stdev=352.14 lat (msec): min=428, max=1129, avg=758.44, stdev=352.09 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7876, max= 7876, per=57.18%, avg=7876.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=14.76%, ctx=70, 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=147174: Fri Sep 18 01:55:38 2026 write: IOPS=1, BW=5236KiB/s (5361kB/s)(12.0MiB/2347msec); 0 zone resets clat (msec): min=240, max=1623, avg=742.31, stdev=765.43 lat (msec): min=241, max=1623, avg=742.62, stdev=765.44 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 6390, max= 8192, per=52.94%, avg=7291.00, stdev=1274.21, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.09%, sys=11.64%, ctx=71, 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=7769KiB/s (7955kB/s), 1942KiB/s-6700KiB/s (1989kB/s-6861kB/s), io=16.0MiB (16.8MB), run=1834-2109msec WRITE: bw=13.5MiB/s (14.1MB/s), 3884KiB/s-5236KiB/s (3978kB/s-5361kB/s), io=32.0MiB (33.6MB), run=2109-2379msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147167: Fri Sep 18 01:55:39 2026 read: IOPS=1, BW=6427KiB/s (6581kB/s)(12.0MiB/1912msec) clat (msec): min=501, max=879, avg=633.03, stdev=213.30 lat (msec): min=501, max=879, avg=633.04, stdev=213.30 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 518], | 70.00th=[ 877], 80.00th=[ 877], 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= 8143, max= 8192, per=95.31%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=10.15%, ctx=54, 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=147168: Fri Sep 18 01:55:39 2026 read: IOPS=0, BW=3298KiB/s (3377kB/s)(4096KiB/1242msec) clat (nsec): min=155020k, max=155020k, avg=155019603.00, stdev= 0.00 lat (nsec): min=155022k, max=155022k, avg=155022209.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 155], 60.00th=[ 155], | 70.00th=[ 155], 80.00th=[ 155], 90.00th=[ 155], 95.00th=[ 155], | 99.00th=[ 155], 99.50th=[ 155], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 5657, max= 5657, per=66.02%, avg=5657.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=6596KiB/s (6754kB/s)(8192KiB/1242msec); 0 zone resets clat (msec): min=459, max=576, avg=518.28, stdev=82.69 lat (msec): min=460, max=577, avg=518.65, stdev=82.77 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 8192, max= 8192, per=65.35%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.08%, sys=17.32%, ctx=82, 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=147170: Fri Sep 18 01:55:39 2026 write: IOPS=1, BW=4701KiB/s (4814kB/s)(12.0MiB/2614msec); 0 zone resets clat (msec): min=135, max=2066, avg=850.12, stdev=1058.62 lat (msec): min=135, max=2066, avg=850.48, stdev=1058.64 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 2072], 80.00th=[ 2072], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7613, max= 7613, per=60.73%, avg=7613.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=10.45%, ctx=84, 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=147172: Fri Sep 18 01:55:39 2026 write: IOPS=1, BW=6664KiB/s (6824kB/s)(12.0MiB/1844msec); 0 zone resets clat (msec): min=198, max=1382, avg=594.68, stdev=682.04 lat (msec): min=198, max=1382, avg=595.00, stdev=681.98 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min=11175, max=11175, per=89.15%, avg=11175.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.05%, sys=11.50%, ctx=83, 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=8569KiB/s (8775kB/s), 3298KiB/s-6427KiB/s (3377kB/s-6581kB/s), io=16.0MiB (16.8MB), run=1242-1912msec WRITE: bw=12.2MiB/s (12.8MB/s), 4701KiB/s-6664KiB/s (4814kB/s-6824kB/s), io=32.0MiB (33.6MB), run=1242-2614msec