== sanity test 398b: DIO and buffer IO race ============== 20:21:43 (1787703703) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.15369 s, 8.2 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=179940: Tue Aug 25 20:24:15 2026 read: IOPS=11, BW=45.5KiB/s (46.6kB/s)(5992KiB/131682msec) clat (usec): min=46, max=789156, avg=49819.45, stdev=38808.73 lat (usec): min=47, max=789157, avg=49833.67, stdev=38818.65 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 12649], 10.00th=[ 18220], 20.00th=[ 25297], | 30.00th=[ 30540], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 57934], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[177210], 99.50th=[219153], 99.90th=[287310], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 118, per=24.84%, avg=44.96, stdev=18.14, samples=258 iops : min= 1, max= 29, avg=10.58, stdev= 4.58, samples=258 write: IOPS=11, BW=47.8KiB/s (48.0kB/s)(6296KiB/131682msec); 0 zone resets clat (usec): min=1045, max=230121, avg=35882.86, stdev=36368.60 lat (usec): min=1047, max=230123, avg=35886.97, stdev=36367.94 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 1926], 20.00th=[ 4686], | 30.00th=[ 8586], 40.00th=[ 16581], 50.00th=[ 26084], 60.00th=[ 34341], | 70.00th=[ 45876], 80.00th=[ 63177], 90.00th=[ 86508], 95.00th=[109577], | 99.00th=[154141], 99.50th=[177210], 99.90th=[204473], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 7, max= 127, per=24.95%, avg=47.41, stdev=19.52, samples=258 iops : min= 1, max= 31, avg=11.18, stdev= 4.89, samples=258 lat (usec) : 50=0.03%, 100=1.53%, 250=0.07%, 750=0.03% lat (msec) : 2=5.47%, 4=3.97%, 10=7.49%, 20=9.83%, 50=39.16% lat (msec) : 100=25.68%, 250=6.64%, 500=0.07%, 1000=0.03% cpu : usr=0.10%, sys=5.09%, ctx=6707, 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=179941: Tue Aug 25 20:24:15 2026 read: IOPS=11, BW=45.9KiB/s (47.0kB/s)(5940KiB/129354msec) clat (usec): min=51, max=280108, avg=47903.32, stdev=30348.92 lat (usec): min=53, max=280109, avg=47904.97, stdev=30348.87 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 14615], 10.00th=[ 18220], 20.00th=[ 25035], | 30.00th=[ 30016], 40.00th=[ 35390], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[106431], | 99.00th=[147850], 99.50th=[177210], 99.90th=[244319], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 101, per=25.17%, avg=45.56, stdev=17.89, samples=254 iops : min= 1, max= 25, avg=10.73, stdev= 4.50, samples=254 write: IOPS=12, BW=49.1KiB/s (50.3kB/s)(6348KiB/129354msec); 0 zone resets clat (usec): min=1092, max=761145, avg=36283.51, stdev=40443.95 lat (usec): min=1093, max=761147, avg=36297.76, stdev=40443.24 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1401], 10.00th=[ 2024], 20.00th=[ 5080], | 30.00th=[ 9110], 40.00th=[ 17171], 50.00th=[ 26084], 60.00th=[ 34341], | 70.00th=[ 45876], 80.00th=[ 62129], 90.00th=[ 83362], 95.00th=[109577], | 99.00th=[160433], 99.50th=[183501], 99.90th=[219153], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 124, per=25.68%, avg=48.79, stdev=21.74, samples=253 iops : min= 1, max= 31, avg=11.55, stdev= 5.47, samples=253 lat (usec) : 100=1.01%, 250=0.10%, 500=0.03% lat (msec) : 2=5.11%, 4=4.10%, 10=7.55%, 20=10.32%, 50=39.65% lat (msec) : 100=26.04%, 250=6.02%, 500=0.03%, 1000=0.03% cpu : usr=0.10%, sys=5.31%, ctx=6706, 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=179942: Tue Aug 25 20:24:15 2026 read: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6028KiB/132007msec) clat (usec): min=44, max=265016, avg=47373.60, stdev=31491.99 lat (usec): min=45, max=265016, avg=47375.56, stdev=31491.75 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 10552], 10.00th=[ 16712], 20.00th=[ 23200], | 30.00th=[ 28705], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 48497], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[160433], 99.50th=[177210], 99.90th=[238027], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 7, max= 103, per=25.14%, avg=45.50, stdev=18.55, samples=258 iops : min= 1, max= 25, avg=10.71, stdev= 4.67, samples=258 write: IOPS=11, BW=47.4KiB/s (48.6kB/s)(6260KiB/132007msec); 0 zone resets clat (usec): min=1024, max=834106, avg=38357.82, stdev=43260.17 lat (usec): min=1025, max=834109, avg=38361.40, stdev=43261.20 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1401], 10.00th=[ 2008], 20.00th=[ 4883], | 30.00th=[ 10028], 40.00th=[ 19792], 50.00th=[ 28443], 60.00th=[ 36963], | 70.00th=[ 46924], 80.00th=[ 63701], 90.00th=[ 87557], 95.00th=[114820], | 99.00th=[170918], 99.50th=[185598], 99.90th=[346031], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 119, per=24.85%, avg=47.22, stdev=21.62, samples=258 iops : min= 1, max= 29, avg=11.15, stdev= 5.42, samples=258 lat (usec) : 50=0.03%, 100=1.76%, 250=0.26%, 750=0.03% lat (msec) : 2=5.11%, 4=3.91%, 10=6.48%, 20=9.99%, 50=39.45% lat (msec) : 100=26.20%, 250=6.64%, 500=0.10%, 1000=0.03% cpu : usr=0.10%, sys=5.15%, ctx=6684, 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=179943: Tue Aug 25 20:24:15 2026 read: IOPS=11, BW=46.4KiB/s (47.5kB/s)(6052KiB/130490msec) clat (usec): min=37, max=804437, avg=47574.75, stdev=34509.44 lat (usec): min=37, max=804438, avg=47580.14, stdev=34508.26 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 11994], 10.00th=[ 17695], 20.00th=[ 24511], | 30.00th=[ 29754], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 49021], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[101188], | 99.00th=[141558], 99.50th=[166724], 99.90th=[185598], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 103, per=25.47%, avg=46.11, stdev=18.03, samples=256 iops : min= 1, max= 25, avg=10.86, stdev= 4.53, samples=256 write: IOPS=11, BW=47.8KiB/s (48.9kB/s)(6236KiB/130490msec); 0 zone resets clat (usec): min=1092, max=302355, avg=37158.17, stdev=38038.98 lat (usec): min=1093, max=302356, avg=37166.47, stdev=38037.13 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 2089], 20.00th=[ 4621], | 30.00th=[ 8586], 40.00th=[ 17433], 50.00th=[ 25822], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 65799], 90.00th=[ 90702], 95.00th=[113771], | 99.00th=[154141], 99.50th=[179307], 99.90th=[265290], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 111, per=25.05%, avg=47.60, stdev=19.87, samples=255 iops : min= 1, max= 27, avg=11.25, stdev= 5.00, samples=255 lat (usec) : 50=0.10%, 100=1.30%, 250=0.13%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.82%, 4=4.26%, 10=7.78%, 20=9.80%, 50=38.38% lat (msec) : 100=27.05%, 250=6.18%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.17%, ctx=6724, 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=182KiB/s (186kB/s), 45.5KiB/s-46.4KiB/s (46.6kB/s-47.5kB/s), io=23.4MiB (24.6MB), run=129354-132007msec WRITE: bw=190KiB/s (195kB/s), 47.4KiB/s-49.1KiB/s (48.6kB/s-50.3kB/s), io=24.6MiB (25.7MB), run=129354-132007msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179935: Tue Aug 25 20:24:59 2026 read: IOPS=8, BW=34.2KiB/s (35.0kB/s)(5992KiB/175061msec) clat (msec): min=5, max=778, avg=46.03, stdev=43.60 lat (msec): min=5, max=778, avg=46.04, stdev=43.60 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 97], 95.00th=[ 128], | 99.00th=[ 203], 99.50th=[ 218], 99.90th=[ 296], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 135, per=25.58%, avg=34.79, stdev=23.23, samples=335 iops : min= 1, max= 33, avg= 8.07, stdev= 5.84, samples=335 write: IOPS=8, BW=35.0KiB/s (36.8kB/s)(6296KiB/175061msec); 0 zone resets clat (msec): min=11, max=353, avg=67.06, stdev=44.36 lat (msec): min=11, max=353, avg=67.06, stdev=44.36 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 99], 90.00th=[ 128], 95.00th=[ 157], | 99.00th=[ 218], 99.50th=[ 239], 99.90th=[ 330], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 119, per=25.21%, avg=35.80, stdev=20.61, samples=342 iops : min= 1, max= 29, avg= 8.32, stdev= 5.20, samples=342 lat (msec) : 10=1.17%, 20=11.91%, 50=45.18%, 100=27.57%, 250=13.90% lat (msec) : 500=0.23%, 1000=0.03% cpu : usr=0.06%, sys=1.79%, ctx=4776, 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=179936: Tue Aug 25 20:24:59 2026 read: IOPS=8, BW=33.9KiB/s (34.7kB/s)(5940KiB/175458msec) clat (msec): min=6, max=795, avg=44.62, stdev=42.21 lat (msec): min=6, max=795, avg=44.63, stdev=42.21 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 100], 95.00th=[ 126], | 99.00th=[ 186], 99.50th=[ 205], 99.90th=[ 296], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 119, per=25.48%, avg=34.65, stdev=22.40, samples=332 iops : min= 1, max= 29, avg= 8.03, stdev= 5.65, samples=332 write: IOPS=9, BW=36.2KiB/s (37.0kB/s)(6348KiB/175458msec); 0 zone resets clat (msec): min=10, max=350, avg=68.41, stdev=47.84 lat (msec): min=10, max=350, avg=68.42, stdev=47.84 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 53], 60.00th=[ 64], | 70.00th=[ 78], 80.00th=[ 97], 90.00th=[ 133], 95.00th=[ 174], | 99.00th=[ 245], 99.50th=[ 266], 99.90th=[ 334], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 111, per=25.36%, avg=36.01, stdev=20.41, samples=341 iops : min= 1, max= 27, avg= 8.37, stdev= 5.16, samples=341 lat (msec) : 10=1.37%, 20=12.76%, 50=45.18%, 100=26.17%, 250=14.00% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.07%, sys=1.81%, ctx=4663, 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=179938: Tue Aug 25 20:24:59 2026 read: IOPS=8, BW=34.2KiB/s (35.1kB/s)(6028KiB/176035msec) clat (msec): min=5, max=296, avg=47.20, stdev=41.06 lat (msec): min=5, max=296, avg=47.21, stdev=41.06 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 107], 95.00th=[ 132], | 99.00th=[ 194], 99.50th=[ 236], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 135, per=25.28%, avg=34.38, stdev=22.20, samples=341 iops : min= 1, max= 33, avg= 7.96, stdev= 5.59, samples=341 write: IOPS=8, BW=35.6KiB/s (36.4kB/s)(6260KiB/176035msec); 0 zone resets clat (msec): min=11, max=811, avg=66.61, stdev=48.88 lat (msec): min=11, max=811, avg=66.62, stdev=48.88 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 74], 80.00th=[ 95], 90.00th=[ 126], 95.00th=[ 159], | 99.00th=[ 232], 99.50th=[ 259], 99.90th=[ 355], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 103, per=25.01%, avg=35.52, stdev=21.21, samples=343 iops : min= 1, max= 25, avg= 8.24, stdev= 5.35, samples=343 lat (msec) : 10=1.17%, 20=12.21%, 50=45.18%, 100=26.82%, 250=14.10% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.06%, sys=1.77%, ctx=4752, 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=179939: Tue Aug 25 20:24:59 2026 read: IOPS=8, BW=34.4KiB/s (35.2kB/s)(6052KiB/175883msec) clat (msec): min=5, max=296, avg=47.14, stdev=42.03 lat (msec): min=5, max=296, avg=47.15, stdev=42.04 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 102], 95.00th=[ 138], | 99.00th=[ 194], 99.50th=[ 239], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 127, per=25.85%, avg=35.16, stdev=22.44, samples=334 iops : min= 1, max= 31, avg= 8.16, stdev= 5.65, samples=334 write: IOPS=8, BW=35.5KiB/s (36.3kB/s)(6236KiB/175883msec); 0 zone resets clat (msec): min=13, max=807, avg=66.65, stdev=47.56 lat (msec): min=13, max=807, avg=66.66, stdev=47.56 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 75], 80.00th=[ 97], 90.00th=[ 125], 95.00th=[ 157], | 99.00th=[ 222], 99.50th=[ 264], 99.90th=[ 330], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 112, per=24.88%, avg=35.33, stdev=20.87, samples=342 iops : min= 1, max= 28, avg= 8.20, stdev= 5.26, samples=342 lat (msec) : 10=1.40%, 20=11.91%, 50=45.48%, 100=26.53%, 250=14.23% lat (msec) : 500=0.42%, 1000=0.03% cpu : usr=0.08%, sys=1.78%, ctx=4851, 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=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=136KiB/s (140kB/s), 33.9KiB/s-34.4KiB/s (34.7kB/s-35.2kB/s), io=23.4MiB (24.6MB), run=175061-176035msec WRITE: bw=143KiB/s (146kB/s), 35.5KiB/s-36.2KiB/s (36.3kB/s-37.0kB/s), io=24.6MiB (25.7MB), run=175061-176035msec 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=179986: Tue Aug 25 20:25:48 2026 read: IOPS=10, BW=173KiB/s (178kB/s)(5920KiB/34143msec) clat (usec): min=36, max=210560, avg=51150.42, stdev=33870.19 lat (usec): min=36, max=210561, avg=51156.59, stdev=33866.84 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 70], 10.00th=[ 1663], 20.00th=[ 25822], | 30.00th=[ 34341], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 55313], | 70.00th=[ 62653], 80.00th=[ 72877], 90.00th=[ 91751], 95.00th=[110625], | 99.00th=[164627], 99.50th=[208667], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 62, max= 382, per=26.30%, avg=173.05, stdev=64.09, samples=66 iops : min= 3, max= 23, avg=10.06, stdev= 4.02, samples=66 write: IOPS=11, BW=187KiB/s (191kB/s)(6368KiB/34143msec); 0 zone resets clat (usec): min=1719, max=269939, avg=37978.45, stdev=36669.03 lat (usec): min=1722, max=269941, avg=37981.28, stdev=36668.98 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2089], 10.00th=[ 4359], 20.00th=[ 8225], | 30.00th=[ 12125], 40.00th=[ 17957], 50.00th=[ 26870], 60.00th=[ 36963], | 70.00th=[ 47973], 80.00th=[ 63177], 90.00th=[ 88605], 95.00th=[103285], | 99.00th=[160433], 99.50th=[200279], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 60, max= 384, per=27.10%, avg=187.56, stdev=81.70, samples=66 iops : min= 3, max= 24, avg=10.97, stdev= 5.16, samples=66 lat (usec) : 50=0.52%, 100=3.26%, 250=0.52%, 500=0.13%, 750=0.13% lat (msec) : 2=2.21%, 4=2.73%, 10=8.07%, 20=10.03%, 50=35.42% lat (msec) : 100=30.73%, 250=6.12%, 500=0.13% cpu : usr=0.08%, sys=5.50%, ctx=1751, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179989: Tue Aug 25 20:25:48 2026 read: IOPS=9, BW=158KiB/s (162kB/s)(5744KiB/36401msec) clat (usec): min=57, max=226734, avg=54326.01, stdev=30011.10 lat (usec): min=59, max=226736, avg=54327.82, stdev=30010.97 clat percentiles (usec): | 1.00th=[ 66], 5.00th=[ 1450], 10.00th=[ 23200], 20.00th=[ 30802], | 30.00th=[ 36439], 40.00th=[ 43254], 50.00th=[ 50594], 60.00th=[ 57934], | 70.00th=[ 65274], 80.00th=[ 79168], 90.00th=[ 91751], 95.00th=[105382], | 99.00th=[135267], 99.50th=[154141], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 43, max= 286, per=23.92%, avg=157.38, stdev=57.73, samples=71 iops : min= 2, max= 17, avg= 9.07, stdev= 3.61, samples=71 write: IOPS=11, BW=180KiB/s (184kB/s)(6544KiB/36401msec); 0 zone resets clat (usec): min=1668, max=216536, avg=40540.73, stdev=39158.64 lat (usec): min=1671, max=216538, avg=40543.44, stdev=39158.55 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2212], 10.00th=[ 3556], 20.00th=[ 8291], | 30.00th=[ 13566], 40.00th=[ 23200], 50.00th=[ 31065], 60.00th=[ 39584], | 70.00th=[ 47973], 80.00th=[ 62653], 90.00th=[102237], 95.00th=[117965], | 99.00th=[183501], 99.50th=[204473], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 31, max= 400, per=26.00%, avg=179.90, stdev=83.96, samples=71 iops : min= 1, max= 25, avg=10.49, stdev= 5.31, samples=71 lat (usec) : 100=1.69%, 250=0.39%, 500=0.13% lat (msec) : 2=1.30%, 4=5.08%, 10=6.77%, 20=8.07%, 50=37.37% lat (msec) : 100=30.34%, 250=8.85% cpu : usr=0.10%, sys=6.12%, ctx=1860, 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=179991: Tue Aug 25 20:25:48 2026 read: IOPS=11, BW=176KiB/s (181kB/s)(6256KiB/35483msec) clat (usec): min=42, max=215613, avg=51189.18, stdev=33876.00 lat (usec): min=42, max=215615, avg=51198.38, stdev=33881.71 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 72], 10.00th=[ 17695], 20.00th=[ 27132], | 30.00th=[ 32375], 40.00th=[ 38011], 50.00th=[ 44827], 60.00th=[ 52167], | 70.00th=[ 63177], 80.00th=[ 73925], 90.00th=[ 90702], 95.00th=[113771], | 99.00th=[181404], 99.50th=[193987], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 60, max= 384, per=27.20%, avg=178.99, stdev=58.76, samples=69 iops : min= 3, max= 24, avg=10.41, stdev= 3.71, samples=69 write: IOPS=10, BW=170KiB/s (174kB/s)(6032KiB/35483msec); 0 zone resets clat (usec): min=1670, max=203434, avg=40293.57, stdev=37500.04 lat (usec): min=1673, max=203437, avg=40314.82, stdev=37484.72 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2835], 10.00th=[ 4228], 20.00th=[ 7242], | 30.00th=[ 12387], 40.00th=[ 21890], 50.00th=[ 29230], 60.00th=[ 38011], | 70.00th=[ 51643], 80.00th=[ 67634], 90.00th=[ 98042], 95.00th=[121111], | 99.00th=[152044], 99.50th=[160433], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 379, per=24.48%, avg=169.41, stdev=80.38, samples=70 iops : min= 1, max= 23, avg= 9.81, stdev= 5.03, samples=70 lat (usec) : 50=0.26%, 100=2.60%, 250=0.39%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.91%, 4=3.65%, 10=8.59%, 20=7.81%, 50=38.67% lat (msec) : 100=29.04%, 250=7.81% cpu : usr=0.07%, sys=5.48%, ctx=1752, 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=179993: Tue Aug 25 20:25:48 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34718msec) clat (usec): min=45, max=240219, avg=50645.58, stdev=34479.49 lat (usec): min=46, max=240221, avg=50647.83, stdev=34480.28 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 72], 10.00th=[ 221], 20.00th=[ 25560], | 30.00th=[ 32900], 40.00th=[ 38536], 50.00th=[ 44827], 60.00th=[ 53740], | 70.00th=[ 64226], 80.00th=[ 74974], 90.00th=[ 90702], 95.00th=[105382], | 99.00th=[160433], 99.50th=[206570], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 30, max= 380, per=26.39%, avg=173.66, stdev=74.58, samples=68 iops : min= 1, max= 23, avg=10.09, stdev= 4.73, samples=68 write: IOPS=11, BW=180KiB/s (185kB/s)(6256KiB/34718msec); 0 zone resets clat (usec): min=1519, max=194426, avg=38956.37, stdev=36612.53 lat (usec): min=1522, max=194429, avg=38962.47, stdev=36610.32 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2114], 10.00th=[ 3556], 20.00th=[ 6587], | 30.00th=[ 10945], 40.00th=[ 21103], 50.00th=[ 28705], 60.00th=[ 36963], | 70.00th=[ 50070], 80.00th=[ 65274], 90.00th=[ 93848], 95.00th=[109577], | 99.00th=[158335], 99.50th=[162530], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 61, max= 379, per=26.13%, avg=180.82, stdev=65.04, samples=68 iops : min= 3, max= 23, avg=10.54, stdev= 4.10, samples=68 lat (usec) : 50=0.13%, 100=4.04%, 250=0.78%, 500=0.13%, 750=0.13% lat (msec) : 2=2.21%, 4=4.17%, 10=7.55%, 20=7.55%, 50=36.85% lat (msec) : 100=29.69%, 250=6.77% cpu : usr=0.07%, sys=5.43%, ctx=1697, 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=658KiB/s (674kB/s), 158KiB/s-176KiB/s (162kB/s-181kB/s), io=23.4MiB (24.5MB), run=34143-36401msec WRITE: bw=692KiB/s (709kB/s), 170KiB/s-187KiB/s (174kB/s-191kB/s), io=24.6MiB (25.8MB), run=34143-36401msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179987: Tue Aug 25 20:26:04 2026 read: IOPS=7, BW=115KiB/s (117kB/s)(5920KiB/51681msec) clat (msec): min=9, max=231, avg=54.82, stdev=38.50 lat (msec): min=9, max=231, avg=54.82, stdev=38.50 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 51], | 70.00th=[ 63], 80.00th=[ 77], 90.00th=[ 108], 95.00th=[ 136], | 99.00th=[ 194], 99.50th=[ 218], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 31, max= 255, per=25.58%, avg=117.91, stdev=59.28, samples=97 iops : min= 1, max= 15, avg= 6.54, stdev= 3.74, samples=97 write: IOPS=7, BW=123KiB/s (126kB/s)(6368KiB/51681msec); 0 zone resets clat (msec): min=17, max=300, avg=78.55, stdev=44.37 lat (msec): min=17, max=300, avg=78.58, stdev=44.37 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 30], 10.00th=[ 36], 20.00th=[ 44], | 30.00th=[ 50], 40.00th=[ 58], 50.00th=[ 67], 60.00th=[ 79], | 70.00th=[ 92], 80.00th=[ 111], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 236], 99.50th=[ 264], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 255, per=25.55%, avg=123.93, stdev=53.13, samples=100 iops : min= 1, max= 15, avg= 6.92, stdev= 3.36, samples=100 lat (msec) : 10=0.13%, 20=5.73%, 50=39.19%, 100=35.42%, 250=19.27% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.64%, ctx=1147, 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=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=179988: Tue Aug 25 20:26:04 2026 read: IOPS=6, BW=111KiB/s (113kB/s)(5744KiB/51925msec) clat (msec): min=6, max=238, avg=53.22, stdev=39.81 lat (msec): min=6, max=238, avg=53.22, stdev=39.81 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 20], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 59], 80.00th=[ 74], 90.00th=[ 110], 95.00th=[ 138], | 99.00th=[ 215], 99.50th=[ 236], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 21, max= 284, per=25.26%, avg=116.44, stdev=60.98, samples=97 iops : min= 1, max= 17, avg= 6.44, stdev= 3.85, samples=97 write: IOPS=7, BW=126KiB/s (129kB/s)(6544KiB/51925msec); 0 zone resets clat (msec): min=15, max=289, avg=79.30, stdev=46.14 lat (msec): min=15, max=289, avg=79.30, stdev=46.14 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 46], | 30.00th=[ 53], 40.00th=[ 61], 50.00th=[ 69], 60.00th=[ 77], | 70.00th=[ 88], 80.00th=[ 103], 90.00th=[ 140], 95.00th=[ 178], | 99.00th=[ 247], 99.50th=[ 275], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 21, max= 284, per=25.95%, avg=125.87, stdev=58.89, samples=102 iops : min= 1, max= 17, avg= 7.04, stdev= 3.73, samples=102 lat (msec) : 10=0.39%, 20=5.08%, 50=36.98%, 100=40.10%, 250=17.06% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.64%, ctx=1149, 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=179990: Tue Aug 25 20:26:04 2026 read: IOPS=7, BW=123KiB/s (126kB/s)(6256KiB/50663msec) clat (msec): min=7, max=249, avg=52.93, stdev=38.94 lat (msec): min=7, max=249, avg=52.94, stdev=38.94 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 17], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 58], 80.00th=[ 71], 90.00th=[ 102], 95.00th=[ 134], | 99.00th=[ 215], 99.50th=[ 245], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 31, max= 315, per=27.16%, avg=125.20, stdev=68.52, samples=98 iops : min= 1, max= 19, avg= 7.00, stdev= 4.31, samples=98 write: IOPS=7, BW=119KiB/s (122kB/s)(6032KiB/50663msec); 0 zone resets clat (msec): min=19, max=307, avg=78.82, stdev=45.86 lat (msec): min=19, max=307, avg=78.82, stdev=45.86 clat percentiles (msec): | 1.00th=[ 25], 5.00th=[ 31], 10.00th=[ 35], 20.00th=[ 43], | 30.00th=[ 50], 40.00th=[ 58], 50.00th=[ 67], 60.00th=[ 78], | 70.00th=[ 92], 80.00th=[ 107], 90.00th=[ 138], 95.00th=[ 169], | 99.00th=[ 247], 99.50th=[ 292], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 255, per=24.23%, avg=117.51, stdev=50.14, samples=99 iops : min= 1, max= 15, avg= 6.52, stdev= 3.17, samples=99 lat (msec) : 10=0.52%, 20=4.30%, 50=41.67%, 100=36.46%, 250=16.67% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.69%, ctx=1192, 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=179992: Tue Aug 25 20:26:04 2026 read: IOPS=7, BW=118KiB/s (121kB/s)(6032KiB/51241msec) clat (msec): min=11, max=265, avg=54.25, stdev=41.91 lat (msec): min=11, max=265, avg=54.25, stdev=41.91 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 59], 80.00th=[ 74], 90.00th=[ 104], 95.00th=[ 150], | 99.00th=[ 228], 99.50th=[ 255], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 31, max= 288, per=26.35%, avg=121.49, stdev=63.06, samples=96 iops : min= 1, max= 18, avg= 6.76, stdev= 4.01, samples=96 write: IOPS=7, BW=122KiB/s (125kB/s)(6256KiB/51241msec); 0 zone resets clat (msec): min=21, max=298, avg=77.98, stdev=44.89 lat (msec): min=21, max=298, avg=77.99, stdev=44.89 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 30], 10.00th=[ 35], 20.00th=[ 42], | 30.00th=[ 48], 40.00th=[ 58], 50.00th=[ 66], 60.00th=[ 77], | 70.00th=[ 91], 80.00th=[ 110], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 234], 99.50th=[ 279], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 255, per=25.56%, avg=123.95, stdev=54.98, samples=98 iops : min= 1, max= 15, avg= 6.92, stdev= 3.46, samples=98 lat (msec) : 20=5.21%, 50=41.67%, 100=35.81%, 250=16.67%, 500=0.65% cpu : usr=0.06%, sys=1.57%, ctx=1127, 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=461KiB/s (472kB/s), 111KiB/s-123KiB/s (113kB/s-126kB/s), io=23.4MiB (24.5MB), run=50663-51925msec WRITE: bw=485KiB/s (497kB/s), 119KiB/s-126KiB/s (122kB/s-129kB/s), io=24.6MiB (25.8MB), run=50663-51925msec 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=180008: Tue Aug 25 20:26:21 2026 read: IOPS=1, BW=1132KiB/s (1159kB/s)(7168KiB/6334msec) clat (msec): min=137, max=3247, avg=717.01, stdev=1126.45 lat (msec): min=137, max=3247, avg=717.02, stdev=1126.45 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 171], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 257], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 600], 90.00th=[ 3239], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 2003, max= 2782, per=68.38%, avg=2210.75, stdev=381.06, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=0, BW=808KiB/s (828kB/s)(5120KiB/6334msec); 0 zone resets clat (msec): min=163, max=315, avg=238.20, stdev=55.44 lat (msec): min=163, max=315, avg=238.28, stdev=55.43 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 2003, max= 3930, per=58.68%, avg=2656.00, stdev=1103.43, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.87%, ctx=429, 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=180009: Tue Aug 25 20:26:21 2026 read: IOPS=0, BW=427KiB/s (437kB/s)(2048KiB/4798msec) clat (msec): min=48, max=224, avg=136.40, stdev=124.47 lat (msec): min=48, max=224, avg=136.40, stdev=124.47 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 49], | 30.00th=[ 49], 40.00th=[ 49], 50.00th=[ 49], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 226], 90.00th=[ 226], 95.00th=[ 226], | 99.00th=[ 226], 99.50th=[ 226], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 2011, max= 2019, per=62.33%, avg=2015.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2134KiB/s (2185kB/s)(10.0MiB/4798msec); 0 zone resets clat (msec): min=152, max=1427, avg=439.72, stdev=385.78 lat (msec): min=152, max=1428, avg=439.82, stdev=385.79 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 207], | 30.00th=[ 209], 40.00th=[ 236], 50.00th=[ 239], 60.00th=[ 355], | 70.00th=[ 414], 80.00th=[ 439], 90.00th=[ 726], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 1777, max= 6059, per=79.11%, avg=3580.40, stdev=1741.50, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 50=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=15.38%, ctx=176, 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=180010: Tue Aug 25 20:26:21 2026 read: IOPS=1, BW=1310KiB/s (1341kB/s)(6144KiB/4691msec) clat (usec): min=462, max=570952, avg=212182.83, stdev=192270.68 lat (usec): min=464, max=570954, avg=212184.40, stdev=192270.83 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[112722], | 30.00th=[112722], 40.00th=[183501], 50.00th=[183501], 60.00th=[187696], | 70.00th=[217056], 80.00th=[217056], 90.00th=[574620], 95.00th=[574620], | 99.00th=[574620], 99.50th=[574620], 99.90th=[574620], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 1973, max= 5333, per=96.31%, avg=3113.67, stdev=1922.25, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1310KiB/s (1341kB/s)(6144KiB/4691msec); 0 zone resets clat (msec): min=121, max=1662, avg=548.96, stdev=567.34 lat (msec): min=121, max=1662, avg=549.03, stdev=567.34 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 372], | 70.00th=[ 575], 80.00th=[ 575], 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= 1777, max= 2820, per=47.81%, avg=2163.75, stdev=453.37, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=50.00%, 500=16.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=13.18%, ctx=209, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180011: Tue Aug 25 20:26:21 2026 read: IOPS=1, BW=1069KiB/s (1094kB/s)(5120KiB/4791msec) clat (usec): min=524, max=333792, avg=93482.87, stdev=145314.32 lat (usec): min=525, max=333793, avg=93483.99, stdev=145314.23 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 3228], 60.00th=[ 3228], | 70.00th=[129500], 80.00th=[129500], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1496KiB/s (1532kB/s)(7168KiB/4791msec); 0 zone resets clat (msec): min=225, max=1714, avg=611.65, stdev=526.14 lat (msec): min=225, max=1714, avg=611.73, stdev=526.11 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 284], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 342], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 768], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 1969, max= 4087, per=64.24%, avg=2907.50, stdev=1077.14, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 250=16.67%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.44%, ctx=141, 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=3233KiB/s (3311kB/s), 427KiB/s-1310KiB/s (437kB/s-1341kB/s), io=20.0MiB (20.0MB), run=4691-6334msec WRITE: bw=4527KiB/s (4635kB/s), 808KiB/s-2134KiB/s (828kB/s-2185kB/s), io=28.0MiB (29.4MB), run=4691-6334msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180013: Tue Aug 25 20:26:21 2026 read: IOPS=1, BW=1145KiB/s (1173kB/s)(7168KiB/6259msec) clat (msec): min=90, max=2483, avg=637.15, stdev=852.93 lat (msec): min=90, max=2483, avg=637.15, stdev=852.93 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 113], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 321], 60.00th=[ 609], | 70.00th=[ 609], 80.00th=[ 735], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 1625, max= 4079, per=71.75%, avg=2347.80, stdev=982.72, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=818KiB/s (838kB/s)(5120KiB/6259msec); 0 zone resets clat (msec): min=291, max=540, avg=348.44, stdev=107.55 lat (msec): min=291, max=540, avg=348.49, stdev=107.55 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2023, max= 3915, per=54.69%, avg=2505.00, stdev=940.04, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=16.67%, 500=41.67%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=4.31%, ctx=108, 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=180014: Tue Aug 25 20:26:21 2026 read: IOPS=0, BW=380KiB/s (389kB/s)(2048KiB/5388msec) clat (msec): min=144, max=221, avg=182.63, stdev=54.32 lat (msec): min=144, max=221, avg=182.64, stdev=54.32 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 222], | 70.00th=[ 222], 80.00th=[ 222], 90.00th=[ 222], 95.00th=[ 222], | 99.00th=[ 222], 99.50th=[ 222], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 1590, max= 2039, per=55.46%, avg=1814.50, stdev=317.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1901KiB/s (1946kB/s)(10.0MiB/5388msec); 0 zone resets clat (msec): min=99, max=2029, avg=486.69, stdev=561.82 lat (msec): min=99, max=2029, avg=486.76, stdev=561.82 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 171], | 30.00th=[ 247], 40.00th=[ 259], 50.00th=[ 259], 60.00th=[ 300], | 70.00th=[ 422], 80.00th=[ 498], 90.00th=[ 592], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 1917, max= 4096, per=66.45%, avg=3043.50, stdev=1144.37, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.31%, ctx=146, 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=180015: Tue Aug 25 20:26:21 2026 read: IOPS=1, BW=1111KiB/s (1137kB/s)(6144KiB/5532msec) clat (msec): min=98, max=283, avg=170.30, stdev=68.78 lat (msec): min=98, max=283, avg=170.30, stdev=68.78 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 116], | 30.00th=[ 116], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 174], | 70.00th=[ 211], 80.00th=[ 211], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 1917, max= 4079, per=77.00%, avg=2519.50, stdev=1041.31, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1111KiB/s (1137kB/s)(6144KiB/5532msec); 0 zone resets clat (msec): min=95, max=2259, avg=735.29, stdev=783.98 lat (msec): min=95, max=2259, avg=735.36, stdev=783.98 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 489], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 1917, max= 3112, per=49.71%, avg=2276.75, stdev=559.80, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.83%, ctx=93, 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=180016: Tue Aug 25 20:26:21 2026 read: IOPS=0, BW=932KiB/s (954kB/s)(5120KiB/5495msec) clat (msec): min=84, max=156, avg=115.51, stdev=29.93 lat (msec): min=84, max=156, avg=115.51, stdev=29.93 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 85], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 113], 60.00th=[ 113], | 70.00th=[ 133], 80.00th=[ 133], 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= 2039, max= 6144, per=100.00%, avg=4091.50, stdev=2902.67, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1304KiB/s (1336kB/s)(7168KiB/5495msec); 0 zone resets clat (msec): min=130, max=1952, avg=668.83, stdev=626.35 lat (msec): min=130, max=1952, avg=668.91, stdev=626.35 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 251], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 481], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 835], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 1414, max= 4079, per=50.18%, avg=2298.40, stdev=1028.43, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.82%, ctx=107, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=3272KiB/s (3351kB/s), 380KiB/s-1145KiB/s (389kB/s-1173kB/s), io=20.0MiB (20.0MB), run=5388-6259msec WRITE: bw=4581KiB/s (4691kB/s), 818KiB/s-1901KiB/s (838kB/s-1946kB/s), io=28.0MiB (29.4MB), run=5388-6259msec 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=180025: Tue Aug 25 20:26:37 2026 read: IOPS=0, BW=3084KiB/s (3158kB/s)(12.0MiB/3984msec) clat (msec): min=287, max=2823, avg=1281.93, stdev=1353.52 lat (msec): min=287, max=2823, avg=1281.93, stdev=1353.52 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 7984, max= 8143, per=100.00%, avg=8063.50, stdev=112.43, 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=2.49%, ctx=51, 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=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=180027: Tue Aug 25 20:26:37 2026 read: IOPS=0, BW=1020KiB/s (1044kB/s)(4096KiB/4016msec) clat (nsec): min=1729.3M, max=1729.3M, avg=1729259651.00, stdev= 0.00 lat (nsec): min=1729.3M, max=1729.3M, avg=1729262357.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1737], 5.00th=[ 1737], 10.00th=[ 1737], 20.00th=[ 1737], | 30.00th=[ 1737], 40.00th=[ 1737], 50.00th=[ 1737], 60.00th=[ 1737], | 70.00th=[ 1737], 80.00th=[ 1737], 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= 7787, max= 7787, per=100.00%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2040KiB/s (2089kB/s)(8192KiB/4016msec); 0 zone resets clat (msec): min=967, max=1273, avg=1120.23, stdev=216.21 lat (msec): min=967, max=1273, avg=1120.61, stdev=216.20 clat percentiles (msec): | 1.00th=[ 969], 5.00th=[ 969], 10.00th=[ 969], 20.00th=[ 969], | 30.00th=[ 969], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 1267], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8143, max= 8143, per=99.80%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.21%, ctx=50, 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=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=180029: Tue Aug 25 20:26:37 2026 write: IOPS=0, BW=3303KiB/s (3383kB/s)(12.0MiB/3720msec); 0 zone resets clat (msec): min=331, max=2384, avg=1188.25, stdev=1067.87 lat (msec): min=334, max=2385, avg=1189.76, stdev=1066.60 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 2400], 80.00th=[ 2400], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 8078, max= 8078, per=99.01%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.25%, ctx=60, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=180031: Tue Aug 25 20:26:37 2026 write: IOPS=0, BW=3104KiB/s (3178kB/s)(12.0MiB/3959msec); 0 zone resets clat (msec): min=675, max=2212, avg=1286.05, stdev=816.03 lat (msec): min=675, max=2213, avg=1286.37, stdev=816.08 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8078, max= 8143, per=99.41%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.37%, ctx=46, 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=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=4080KiB/s (4178kB/s), 1020KiB/s-3084KiB/s (1044kB/s-3158kB/s), io=16.0MiB (16.8MB), run=3984-4016msec WRITE: bw=8159KiB/s (8355kB/s), 2040KiB/s-3303KiB/s (2089kB/s-3383kB/s), io=32.0MiB (33.6MB), run=3720-4016msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180024: Tue Aug 25 20:26:37 2026 read: IOPS=1, BW=4133KiB/s (4232kB/s)(12.0MiB/2973msec) clat (msec): min=684, max=1465, avg=958.20, stdev=439.67 lat (msec): min=684, max=1465, avg=958.20, stdev=439.67 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=11.10%, ctx=429, 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=180026: Tue Aug 25 20:26:37 2026 read: IOPS=0, BW=890KiB/s (911kB/s)(4096KiB/4603msec) clat (nsec): min=667545k, max=667545k, avg=667545358.00, stdev= 0.00 lat (nsec): min=667548k, max=667548k, avg=667547884.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] 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=1780KiB/s (1822kB/s)(8192KiB/4603msec); 0 zone resets clat (msec): min=957, max=2916, avg=1936.84, stdev=1384.87 lat (msec): min=961, max=2916, avg=1939.00, stdev=1382.44 clat percentiles (msec): | 1.00th=[ 961], 5.00th=[ 961], 10.00th=[ 961], 20.00th=[ 961], | 30.00th=[ 961], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 2903], | 70.00th=[ 2903], 80.00th=[ 2903], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, 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=4.61%, ctx=101, 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=180028: Tue Aug 25 20:26:37 2026 write: IOPS=0, BW=2652KiB/s (2715kB/s)(12.0MiB/4634msec); 0 zone resets clat (msec): min=304, max=3569, avg=1533.04, stdev=1776.43 lat (msec): min=307, max=3571, avg=1534.63, stdev=1776.51 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 3574], 80.00th=[ 3574], 90.00th=[ 3574], 95.00th=[ 3574], | 99.00th=[ 3574], 99.50th=[ 3574], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, 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=2.48%, ctx=40, 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=180030: Tue Aug 25 20:26:37 2026 write: IOPS=0, BW=3347KiB/s (3428kB/s)(12.0MiB/3671msec); 0 zone resets clat (msec): min=733, max=1701, avg=1200.40, stdev=484.83 lat (msec): min=733, max=1701, avg=1201.15, stdev=484.81 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7713, max= 8126, per=100.00%, avg=7919.50, stdev=292.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.30%, ctx=62, 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=3559KiB/s (3645kB/s), 890KiB/s-4133KiB/s (911kB/s-4232kB/s), io=16.0MiB (16.8MB), run=2973-4603msec WRITE: bw=7071KiB/s (7241kB/s), 1780KiB/s-3347KiB/s (1822kB/s-3428kB/s), io=32.0MiB (33.6MB), run=3671-4634msec