== sanity test 398b: DIO and buffer IO race ============== 07:03:23 (1768305803) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.85282 s, 7.3 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=181970: Tue Jan 13 07:05:55 2026 read: IOPS=11, BW=46.6KiB/s (47.7kB/s)(5992KiB/128606msec) clat (usec): min=94, max=334362, avg=47161.21, stdev=31337.68 lat (usec): min=95, max=334363, avg=47162.78, stdev=31337.63 clat percentiles (usec): | 1.00th=[ 143], 5.00th=[ 8848], 10.00th=[ 17433], 20.00th=[ 23462], | 30.00th=[ 29754], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[152044], 99.50th=[177210], 99.90th=[214959], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 111, per=25.60%, avg=46.34, stdev=19.53, samples=251 iops : min= 1, max= 27, avg=10.94, stdev= 4.91, samples=251 write: IOPS=12, BW=48.0KiB/s (50.1kB/s)(6296KiB/128606msec); 0 zone resets clat (usec): min=743, max=1138.2k, avg=36478.33, stdev=49485.29 lat (usec): min=744, max=1138.2k, avg=36484.93, stdev=49482.79 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1106], 10.00th=[ 1205], | 20.00th=[ 2343], 30.00th=[ 6259], 40.00th=[ 14222], | 50.00th=[ 24511], 60.00th=[ 32900], 70.00th=[ 44303], | 80.00th=[ 63701], 90.00th=[ 88605], 95.00th=[ 110625], | 99.00th=[ 179307], 99.50th=[ 242222], 99.90th=[ 337642], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 126, per=25.78%, avg=48.73, stdev=22.89, samples=251 iops : min= 1, max= 31, avg=11.53, stdev= 5.77, samples=251 lat (usec) : 100=0.03%, 250=1.60%, 500=0.23%, 750=0.13%, 1000=0.46% lat (msec) : 2=9.02%, 4=3.97%, 10=5.70%, 20=8.95%, 50=38.31% lat (msec) : 100=25.00%, 250=6.35%, 500=0.23%, 2000=0.03% cpu : usr=0.07%, sys=4.19%, ctx=5944, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=181971: Tue Jan 13 07:05:55 2026 read: IOPS=11, BW=45.9KiB/s (46.0kB/s)(5940KiB/129419msec) clat (usec): min=113, max=1251.9k, avg=48415.98, stdev=45610.35 lat (usec): min=114, max=1251.9k, avg=48419.24, stdev=45610.51 clat percentiles (usec): | 1.00th=[ 145], 5.00th=[ 11076], 10.00th=[ 16909], | 20.00th=[ 23462], 30.00th=[ 28967], 40.00th=[ 34341], | 50.00th=[ 41157], 60.00th=[ 47973], 70.00th=[ 56886], | 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[ 105382], | 99.00th=[ 162530], 99.50th=[ 200279], 99.90th=[ 396362], | 99.95th=[1249903], 99.99th=[1249903] bw ( KiB/s): min= 7, max= 103, per=25.38%, avg=45.93, stdev=20.04, samples=252 iops : min= 1, max= 25, avg=10.83, stdev= 5.04, samples=252 write: IOPS=12, BW=49.0KiB/s (50.2kB/s)(6348KiB/129419msec); 0 zone resets clat (usec): min=743, max=320471, avg=35891.08, stdev=39529.37 lat (usec): min=744, max=320472, avg=35893.68, stdev=39528.95 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1106], 10.00th=[ 1205], 20.00th=[ 2245], | 30.00th=[ 5800], 40.00th=[ 14484], 50.00th=[ 24773], 60.00th=[ 34341], | 70.00th=[ 46924], 80.00th=[ 63177], 90.00th=[ 87557], 95.00th=[115868], | 99.00th=[162530], 99.50th=[198181], 99.90th=[287310], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 142, per=26.20%, avg=49.52, stdev=22.52, samples=250 iops : min= 1, max= 35, avg=11.74, stdev= 5.69, samples=250 lat (usec) : 250=1.69%, 500=0.10%, 750=0.13%, 1000=0.42% lat (msec) : 2=9.24%, 4=4.23%, 10=5.27%, 20=9.11%, 50=37.04% lat (msec) : 100=25.78%, 250=6.77%, 500=0.16%, 2000=0.03% cpu : usr=0.08%, sys=4.27%, ctx=6059, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=181972: Tue Jan 13 07:05:55 2026 read: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6028KiB/131854msec) clat (usec): min=99, max=242093, avg=47577.00, stdev=29380.67 lat (usec): min=99, max=242095, avg=47582.53, stdev=29377.91 clat percentiles (usec): | 1.00th=[ 141], 5.00th=[ 8848], 10.00th=[ 16450], 20.00th=[ 23725], | 30.00th=[ 30540], 40.00th=[ 35914], 50.00th=[ 42730], 60.00th=[ 49021], | 70.00th=[ 57934], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[101188], | 99.00th=[135267], 99.50th=[154141], 99.90th=[198181], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 7, max= 103, per=25.24%, avg=45.69, stdev=18.41, samples=256 iops : min= 1, max= 25, avg=10.77, stdev= 4.65, samples=256 write: IOPS=11, BW=47.5KiB/s (48.6kB/s)(6260KiB/131854msec); 0 zone resets clat (usec): min=861, max=1262.8k, avg=38100.53, stdev=50031.82 lat (usec): min=862, max=1262.8k, avg=38105.02, stdev=50031.90 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1139], 10.00th=[ 1254], | 20.00th=[ 3032], 30.00th=[ 7046], 40.00th=[ 17171], | 50.00th=[ 27132], 60.00th=[ 35914], 70.00th=[ 47973], | 80.00th=[ 63701], 90.00th=[ 92799], 95.00th=[ 115868], | 99.00th=[ 160433], 99.50th=[ 177210], 99.90th=[ 329253], | 99.95th=[1266680], 99.99th=[1266680] bw ( KiB/s): min= 7, max= 134, per=25.03%, avg=47.31, stdev=21.66, samples=256 iops : min= 1, max= 33, avg=11.19, stdev= 5.47, samples=256 lat (usec) : 100=0.03%, 250=1.66%, 500=0.26%, 750=0.07%, 1000=0.29% lat (msec) : 2=7.88%, 4=3.39%, 10=6.64%, 20=8.07%, 50=37.86% lat (msec) : 100=26.82%, 250=6.93%, 500=0.07%, 2000=0.03% cpu : usr=0.07%, sys=4.20%, ctx=6102, 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=181973: Tue Jan 13 07:05:55 2026 read: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6052KiB/132388msec) clat (usec): min=120, max=390375, avg=48352.12, stdev=33739.78 lat (usec): min=120, max=390376, avg=48371.57, stdev=33733.57 clat percentiles (usec): | 1.00th=[ 151], 5.00th=[ 10945], 10.00th=[ 17171], 20.00th=[ 24249], | 30.00th=[ 29754], 40.00th=[ 35914], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 57934], 80.00th=[ 68682], 90.00th=[ 86508], 95.00th=[105382], | 99.00th=[156238], 99.50th=[212861], 99.90th=[367002], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 7, max= 103, per=25.23%, avg=45.67, stdev=18.49, samples=257 iops : min= 1, max= 25, avg=10.75, stdev= 4.64, samples=257 write: IOPS=11, BW=47.1KiB/s (48.2kB/s)(6236KiB/132388msec); 0 zone resets clat (usec): min=773, max=1177.5k, avg=37531.57, stdev=49479.49 lat (usec): min=774, max=1177.5k, avg=37533.99, stdev=49479.38 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1106], 10.00th=[ 1188], | 20.00th=[ 2245], 30.00th=[ 5473], 40.00th=[ 14484], | 50.00th=[ 26346], 60.00th=[ 36439], 70.00th=[ 48497], | 80.00th=[ 64750], 90.00th=[ 90702], 95.00th=[ 117965], | 99.00th=[ 177210], 99.50th=[ 200279], 99.90th=[ 304088], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 6, max= 118, per=25.00%, avg=47.24, stdev=20.00, samples=256 iops : min= 1, max= 29, avg=11.16, stdev= 5.05, samples=256 lat (usec) : 250=1.79%, 500=0.29%, 750=0.10%, 1000=0.52% lat (msec) : 2=9.02%, 4=3.97%, 10=5.63%, 20=7.42%, 50=37.83% lat (msec) : 100=26.60%, 250=6.67%, 500=0.13%, 2000=0.03% cpu : usr=0.06%, sys=4.22%, ctx=6060, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=181KiB/s (186kB/s), 45.7KiB/s-46.6KiB/s (46.8kB/s-47.7kB/s), io=23.4MiB (24.6MB), run=128606-132388msec WRITE: bw=190KiB/s (194kB/s), 47.1KiB/s-49.0KiB/s (48.2kB/s-50.2kB/s), io=24.6MiB (25.7MB), run=128606-132388msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181966: Tue Jan 13 07:06:35 2026 read: IOPS=8, BW=34.9KiB/s (35.8kB/s)(5992KiB/171601msec) clat (msec): min=5, max=1290, avg=46.12, stdev=54.46 lat (msec): min=5, max=1290, avg=46.12, stdev=54.46 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 38], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 215], 99.50th=[ 243], 99.90th=[ 414], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 151, per=25.44%, avg=35.37, stdev=27.18, samples=328 iops : min= 1, max= 37, avg= 8.16, stdev= 6.83, samples=328 write: IOPS=9, BW=36.7KiB/s (37.6kB/s)(6296KiB/171601msec); 0 zone resets clat (msec): min=10, max=406, avg=64.81, stdev=49.51 lat (msec): min=10, max=406, avg=64.81, stdev=49.51 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 41], 50.00th=[ 49], 60.00th=[ 61], | 70.00th=[ 75], 80.00th=[ 97], 90.00th=[ 131], 95.00th=[ 163], | 99.00th=[ 243], 99.50th=[ 284], 99.90th=[ 401], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7, max= 126, per=25.39%, avg=37.07, stdev=25.33, samples=329 iops : min= 1, max= 31, avg= 8.59, stdev= 6.37, samples=329 lat (msec) : 10=2.90%, 20=17.68%, 50=40.56%, 100=24.12%, 250=14.03% lat (msec) : 500=0.68%, 2000=0.03% cpu : usr=0.05%, sys=1.51%, ctx=4736, 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=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=181967: Tue Jan 13 07:06:35 2026 read: IOPS=8, BW=34.7KiB/s (35.6kB/s)(5940KiB/171036msec) clat (msec): min=4, max=1243, avg=44.38, stdev=52.81 lat (msec): min=4, max=1243, avg=44.38, stdev=52.81 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 63], 90.00th=[ 102], 95.00th=[ 132], | 99.00th=[ 203], 99.50th=[ 247], 99.90th=[ 342], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 167, per=25.44%, avg=35.36, stdev=27.50, samples=326 iops : min= 1, max= 41, avg= 8.17, stdev= 6.91, samples=326 write: IOPS=9, BW=37.1KiB/s (38.0kB/s)(6348KiB/171036msec); 0 zone resets clat (msec): min=10, max=420, avg=65.93, stdev=51.10 lat (msec): min=10, max=420, avg=65.94, stdev=51.10 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 27], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 62], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 133], 95.00th=[ 167], | 99.00th=[ 247], 99.50th=[ 279], 99.90th=[ 388], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 136, per=25.31%, avg=36.95, stdev=25.76, samples=333 iops : min= 1, max= 34, avg= 8.56, stdev= 6.48, samples=333 lat (msec) : 10=3.09%, 20=17.68%, 50=40.69%, 100=23.63%, 250=14.19% lat (msec) : 500=0.68%, 2000=0.03% cpu : usr=0.05%, sys=1.47%, ctx=4758, 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=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=181968: Tue Jan 13 07:06:35 2026 read: IOPS=8, BW=35.2KiB/s (36.0kB/s)(6028KiB/171460msec) clat (msec): min=5, max=397, avg=45.10, stdev=42.13 lat (msec): min=5, max=397, avg=45.10, stdev=42.13 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 25], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 68], 90.00th=[ 104], 95.00th=[ 132], | 99.00th=[ 199], 99.50th=[ 224], 99.90th=[ 292], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 6, max= 165, per=25.78%, avg=35.83, stdev=26.22, samples=327 iops : min= 1, max= 41, avg= 8.28, stdev= 6.60, samples=327 write: IOPS=9, BW=36.5KiB/s (37.4kB/s)(6260KiB/171460msec); 0 zone resets clat (msec): min=8, max=1255, avg=65.82, stdev=58.59 lat (msec): min=8, max=1256, avg=65.82, stdev=58.59 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 40], 50.00th=[ 49], 60.00th=[ 63], | 70.00th=[ 77], 80.00th=[ 99], 90.00th=[ 129], 95.00th=[ 165], | 99.00th=[ 255], 99.50th=[ 292], 99.90th=[ 451], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 6, max= 135, per=24.93%, avg=36.40, stdev=26.18, samples=334 iops : min= 1, max= 33, avg= 8.43, stdev= 6.58, samples=334 lat (msec) : 10=3.12%, 20=15.95%, 50=42.09%, 100=23.86%, 250=14.26% lat (msec) : 500=0.68%, 2000=0.03% cpu : usr=0.05%, sys=1.57%, ctx=4683, 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=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=181969: Tue Jan 13 07:06:35 2026 read: IOPS=8, BW=35.4KiB/s (36.3kB/s)(6052KiB/170858msec) clat (msec): min=5, max=330, avg=44.49, stdev=41.66 lat (msec): min=5, max=330, avg=44.49, stdev=41.66 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 65], 90.00th=[ 101], 95.00th=[ 133], | 99.00th=[ 199], 99.50th=[ 232], 99.90th=[ 305], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 151, per=26.06%, avg=36.22, stdev=27.07, samples=325 iops : min= 1, max= 37, avg= 8.38, stdev= 6.80, samples=325 write: IOPS=9, BW=36.5KiB/s (37.4kB/s)(6236KiB/170858msec); 0 zone resets clat (msec): min=9, max=1208, avg=66.05, stdev=58.34 lat (msec): min=9, max=1208, avg=66.06, stdev=58.34 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 41], 50.00th=[ 49], 60.00th=[ 62], | 70.00th=[ 79], 80.00th=[ 99], 90.00th=[ 131], 95.00th=[ 161], | 99.00th=[ 249], 99.50th=[ 305], 99.90th=[ 456], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7, max= 159, per=25.18%, avg=36.77, stdev=25.58, samples=330 iops : min= 1, max= 39, avg= 8.52, stdev= 6.43, samples=330 lat (msec) : 10=2.77%, 20=16.54%, 50=42.87%, 100=23.05%, 250=14.13% lat (msec) : 500=0.62%, 2000=0.03% cpu : usr=0.05%, sys=1.55%, ctx=4820, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=140KiB/s (143kB/s), 34.7KiB/s-35.4KiB/s (35.6kB/s-36.3kB/s), io=23.4MiB (24.6MB), run=170858-171601msec WRITE: bw=147KiB/s (150kB/s), 36.5KiB/s-37.1KiB/s (37.4kB/s-38.0kB/s), io=24.6MiB (25.7MB), run=170858-171601msec 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=182014: Tue Jan 13 07:07:16 2026 read: IOPS=13, BW=209KiB/s (214kB/s)(5920KiB/28356msec) clat (usec): min=116, max=178570, avg=41859.90, stdev=27872.18 lat (usec): min=117, max=178572, avg=41862.89, stdev=27871.65 clat percentiles (usec): | 1.00th=[ 139], 5.00th=[ 176], 10.00th=[ 7963], 20.00th=[ 20317], | 30.00th=[ 26608], 40.00th=[ 32113], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 52691], 80.00th=[ 63177], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[131597], 99.50th=[168821], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 94, max= 382, per=26.38%, avg=207.38, stdev=60.14, samples=55 iops : min= 5, max= 23, avg=12.20, stdev= 3.78, samples=55 write: IOPS=14, BW=225KiB/s (230kB/s)(6368KiB/28356msec); 0 zone resets clat (usec): min=1295, max=181426, avg=32089.01, stdev=33142.36 lat (usec): min=1296, max=181428, avg=32094.95, stdev=33148.06 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1795], 10.00th=[ 2540], 20.00th=[ 5538], | 30.00th=[ 8586], 40.00th=[ 13042], 50.00th=[ 20055], 60.00th=[ 28967], | 70.00th=[ 40109], 80.00th=[ 54264], 90.00th=[ 82314], 95.00th=[107480], | 99.00th=[137364], 99.50th=[152044], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 31, max= 476, per=27.11%, avg=224.20, stdev=90.47, samples=55 iops : min= 1, max= 29, avg=13.25, stdev= 5.72, samples=55 lat (usec) : 250=3.65%, 500=0.13%, 750=0.13%, 1000=0.13% lat (msec) : 2=3.78%, 4=4.56%, 10=9.38%, 20=13.54%, 50=36.85% lat (msec) : 100=23.18%, 250=4.69% cpu : usr=0.08%, sys=5.72%, ctx=1676, 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=182015: Tue Jan 13 07:07:16 2026 read: IOPS=11, BW=189KiB/s (193kB/s)(5744KiB/30444msec) clat (usec): min=109, max=209542, avg=44000.04, stdev=29418.53 lat (usec): min=111, max=209544, avg=44001.83, stdev=29418.32 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 178], 10.00th=[ 12256], 20.00th=[ 22152], | 30.00th=[ 28705], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 53216], 80.00th=[ 63701], 90.00th=[ 78119], 95.00th=[ 96994], | 99.00th=[166724], 99.50th=[173016], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 414, per=23.85%, avg=187.42, stdev=77.42, samples=59 iops : min= 1, max= 25, avg=10.93, stdev= 4.86, samples=59 write: IOPS=13, BW=215KiB/s (220kB/s)(6544KiB/30444msec); 0 zone resets clat (usec): min=1275, max=210995, avg=35415.15, stdev=34829.94 lat (usec): min=1278, max=210998, avg=35419.42, stdev=34832.90 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2073], 10.00th=[ 3032], 20.00th=[ 7177], | 30.00th=[ 11994], 40.00th=[ 17957], 50.00th=[ 25560], 60.00th=[ 32900], | 70.00th=[ 44303], 80.00th=[ 58459], 90.00th=[ 80217], 95.00th=[ 96994], | 99.00th=[181404], 99.50th=[187696], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 62, max= 446, per=25.71%, avg=212.63, stdev=86.46, samples=59 iops : min= 3, max= 27, avg=12.51, stdev= 5.43, samples=59 lat (usec) : 250=3.65%, 500=0.13% lat (msec) : 2=2.21%, 4=4.56%, 10=7.42%, 20=13.15%, 50=38.15% lat (msec) : 100=26.17%, 250=4.56% cpu : usr=0.07%, sys=5.52%, ctx=1774, 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=182016: Tue Jan 13 07:07:16 2026 read: IOPS=13, BW=219KiB/s (224kB/s)(6256KiB/28628msec) clat (usec): min=103, max=227656, avg=42501.51, stdev=28209.64 lat (usec): min=103, max=227658, avg=42504.85, stdev=28209.33 clat percentiles (usec): | 1.00th=[ 135], 5.00th=[ 188], 10.00th=[ 14746], 20.00th=[ 22414], | 30.00th=[ 28181], 40.00th=[ 33162], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 50070], 80.00th=[ 57410], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[149947], 99.50th=[175113], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 63, max= 351, per=27.75%, avg=218.11, stdev=70.08, samples=56 iops : min= 3, max= 21, avg=12.86, stdev= 4.41, samples=56 write: IOPS=13, BW=211KiB/s (216kB/s)(6032KiB/28628msec); 0 zone resets clat (usec): min=1408, max=195888, avg=31450.69, stdev=33040.28 lat (usec): min=1411, max=195891, avg=31453.14, stdev=33040.22 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1795], 10.00th=[ 2671], 20.00th=[ 5145], | 30.00th=[ 7898], 40.00th=[ 12649], 50.00th=[ 21627], 60.00th=[ 28705], | 70.00th=[ 38536], 80.00th=[ 51643], 90.00th=[ 72877], 95.00th=[103285], | 99.00th=[145753], 99.50th=[170918], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 31, max= 466, per=25.08%, avg=207.39, stdev=91.25, samples=56 iops : min= 1, max= 29, avg=12.20, stdev= 5.78, samples=56 lat (usec) : 250=3.39%, 500=0.39% lat (msec) : 2=3.39%, 4=3.91%, 10=10.16%, 20=10.16%, 50=42.45% lat (msec) : 100=21.09%, 250=5.08% cpu : usr=0.08%, sys=5.89%, ctx=1787, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182017: Tue Jan 13 07:07:16 2026 read: IOPS=13, BW=216KiB/s (221kB/s)(6032KiB/27936msec) clat (usec): min=99, max=222223, avg=39731.15, stdev=28658.03 lat (usec): min=100, max=222225, avg=39751.09, stdev=28657.43 clat percentiles (usec): | 1.00th=[ 145], 5.00th=[ 174], 10.00th=[ 2606], 20.00th=[ 19268], | 30.00th=[ 25035], 40.00th=[ 30802], 50.00th=[ 35914], 60.00th=[ 40633], | 70.00th=[ 47449], 80.00th=[ 55837], 90.00th=[ 73925], 95.00th=[ 86508], | 99.00th=[147850], 99.50th=[173016], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 63, max= 448, per=27.21%, avg=213.89, stdev=81.34, samples=54 iops : min= 3, max= 28, avg=12.61, stdev= 5.15, samples=54 write: IOPS=13, BW=224KiB/s (229kB/s)(6256KiB/27936msec); 0 zone resets clat (usec): min=1382, max=189904, avg=32696.08, stdev=32188.83 lat (usec): min=1385, max=189906, avg=32699.00, stdev=32188.49 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 2073], 10.00th=[ 2900], 20.00th=[ 6128], | 30.00th=[ 9241], 40.00th=[ 14877], 50.00th=[ 22676], 60.00th=[ 32375], | 70.00th=[ 41681], 80.00th=[ 57410], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[141558], 99.50th=[185598], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 31, max= 507, per=26.83%, avg=221.89, stdev=100.91, samples=54 iops : min= 1, max= 31, avg=13.11, stdev= 6.38, samples=54 lat (usec) : 100=0.13%, 250=3.26%, 500=0.65%, 1000=0.26% lat (msec) : 2=2.86%, 4=5.21%, 10=9.11%, 20=13.15%, 50=39.32% lat (msec) : 100=22.53%, 250=3.52% cpu : usr=0.06%, sys=6.02%, ctx=1692, 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=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=787KiB/s (806kB/s), 189KiB/s-219KiB/s (193kB/s-224kB/s), io=23.4MiB (24.5MB), run=27936-30444msec WRITE: bw=828KiB/s (848kB/s), 211KiB/s-225KiB/s (216kB/s-230kB/s), io=24.6MiB (25.8MB), run=27936-30444msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182019: Tue Jan 13 07:07:27 2026 read: IOPS=9, BW=150KiB/s (154kB/s)(5920KiB/39428msec) clat (msec): min=6, max=261, avg=41.87, stdev=36.64 lat (msec): min=6, max=261, avg=41.87, stdev=36.64 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 62], 90.00th=[ 92], 95.00th=[ 114], | 99.00th=[ 197], 99.50th=[ 228], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 442, per=25.45%, avg=152.69, stdev=98.77, samples=74 iops : min= 1, max= 27, avg= 8.77, stdev= 6.28, samples=74 write: IOPS=10, BW=162KiB/s (165kB/s)(6368KiB/39428msec); 0 zone resets clat (msec): min=13, max=293, avg=59.63, stdev=41.95 lat (msec): min=13, max=293, avg=59.63, stdev=41.95 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 70], 80.00th=[ 89], 90.00th=[ 117], 95.00th=[ 146], | 99.00th=[ 201], 99.50th=[ 222], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 24, max= 472, per=25.30%, avg=159.90, stdev=95.81, samples=77 iops : min= 1, max= 29, avg= 9.22, stdev= 6.10, samples=77 lat (msec) : 10=2.21%, 20=17.19%, 50=44.79%, 100=24.22%, 250=11.33% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.84%, ctx=1177, 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=182020: Tue Jan 13 07:07:27 2026 read: IOPS=9, BW=146KiB/s (150kB/s)(5744KiB/39309msec) clat (msec): min=5, max=297, avg=41.73, stdev=38.51 lat (msec): min=5, max=297, avg=41.73, stdev=38.51 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 61], 90.00th=[ 91], 95.00th=[ 118], | 99.00th=[ 197], 99.50th=[ 284], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 24, max= 412, per=24.50%, avg=147.03, stdev=84.89, samples=76 iops : min= 1, max= 25, avg= 8.41, stdev= 5.41, samples=76 write: IOPS=10, BW=166KiB/s (170kB/s)(6544KiB/39309msec); 0 zone resets clat (msec): min=9, max=242, avg=59.12, stdev=40.66 lat (msec): min=9, max=242, avg=59.22, stdev=40.83 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 68], 80.00th=[ 89], 90.00th=[ 115], 95.00th=[ 146], | 99.00th=[ 190], 99.50th=[ 194], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 574, per=26.19%, avg=165.53, stdev=98.55, samples=77 iops : min= 1, max= 35, avg= 9.57, stdev= 6.27, samples=77 lat (msec) : 10=1.82%, 20=16.28%, 50=47.27%, 100=22.27%, 250=12.11% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.82%, ctx=1170, 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=182021: Tue Jan 13 07:07:27 2026 read: IOPS=9, BW=157KiB/s (161kB/s)(6256KiB/39860msec) clat (msec): min=6, max=338, avg=44.71, stdev=41.79 lat (msec): min=6, max=338, avg=44.71, stdev=41.79 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 37], | 70.00th=[ 51], 80.00th=[ 67], 90.00th=[ 96], 95.00th=[ 123], | 99.00th=[ 201], 99.50th=[ 232], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 416, per=26.44%, avg=158.62, stdev=97.66, samples=76 iops : min= 1, max= 26, avg= 9.16, stdev= 6.22, samples=76 write: IOPS=9, BW=151KiB/s (155kB/s)(6032KiB/39860msec); 0 zone resets clat (msec): min=7, max=284, avg=59.01, stdev=41.03 lat (msec): min=7, max=284, avg=59.01, stdev=41.03 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 59], | 70.00th=[ 70], 80.00th=[ 85], 90.00th=[ 112], 95.00th=[ 134], | 99.00th=[ 199], 99.50th=[ 245], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 544, per=23.27%, avg=147.09, stdev=90.76, samples=78 iops : min= 1, max= 34, avg= 8.42, stdev= 5.81, samples=78 lat (msec) : 10=3.26%, 20=15.89%, 50=42.06%, 100=27.86%, 250=10.68% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.94%, ctx=1267, 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=182022: Tue Jan 13 07:07:27 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(6032KiB/38868msec) clat (msec): min=4, max=279, avg=42.32, stdev=38.37 lat (msec): min=4, max=279, avg=42.32, stdev=38.37 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 37], | 70.00th=[ 44], 80.00th=[ 61], 90.00th=[ 94], 95.00th=[ 117], | 99.00th=[ 207], 99.50th=[ 232], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 448, per=27.06%, avg=162.37, stdev=98.09, samples=72 iops : min= 1, max= 28, avg= 9.38, stdev= 6.29, samples=72 write: IOPS=10, BW=161KiB/s (165kB/s)(6256KiB/38868msec); 0 zone resets clat (msec): min=10, max=283, avg=58.21, stdev=41.04 lat (msec): min=10, max=283, avg=58.22, stdev=41.04 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 65], 80.00th=[ 84], 90.00th=[ 115], 95.00th=[ 146], | 99.00th=[ 188], 99.50th=[ 232], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 448, per=25.43%, avg=160.72, stdev=93.65, samples=76 iops : min= 1, max= 28, avg= 9.26, stdev= 5.93, samples=76 lat (msec) : 10=2.73%, 20=15.10%, 50=47.53%, 100=23.44%, 250=10.94% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.97%, ctx=1234, 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=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=601KiB/s (615kB/s), 146KiB/s-157KiB/s (150kB/s-161kB/s), io=23.4MiB (24.5MB), run=38868-39860msec WRITE: bw=632KiB/s (647kB/s), 151KiB/s-166KiB/s (155kB/s-170kB/s), io=24.6MiB (25.8MB), run=38868-39860msec 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=182040: Tue Jan 13 07:07:44 2026 read: IOPS=2, BW=2179KiB/s (2232kB/s)(7168KiB/3289msec) clat (usec): min=588, max=395912, avg=242021.73, stdev=138263.50 lat (usec): min=590, max=395914, avg=242023.45, stdev=138263.41 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[168821], | 30.00th=[208667], 40.00th=[208667], 50.00th=[229639], 60.00th=[295699], | 70.00th=[295699], 80.00th=[392168], 90.00th=[396362], 95.00th=[396362], | 99.00th=[396362], 99.50th=[396362], 99.90th=[396362], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 2015, max= 4055, per=62.67%, avg=2717.25, stdev=956.48, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1557KiB/s (1594kB/s)(5120KiB/3289msec); 0 zone resets clat (msec): min=35, max=555, avg=311.77, stdev=231.74 lat (msec): min=38, max=555, avg=312.49, stdev=231.12 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 36], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 257], 60.00th=[ 257], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 2027, max= 4079, per=44.68%, avg=2712.33, stdev=1183.57, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 250=33.33%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=8.88%, ctx=193, 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=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=182041: Tue Jan 13 07:07:44 2026 read: IOPS=0, BW=434KiB/s (444kB/s)(2048KiB/4720msec) clat (usec): min=802, max=228363, avg=114583.09, stdev=160909.70 lat (usec): min=804, max=228364, avg=114584.41, stdev=160909.23 clat percentiles (usec): | 1.00th=[ 799], 5.00th=[ 799], 10.00th=[ 799], 20.00th=[ 799], | 30.00th=[ 799], 40.00th=[ 799], 50.00th=[ 799], 60.00th=[227541], | 70.00th=[227541], 80.00th=[227541], 90.00th=[227541], 95.00th=[227541], | 99.00th=[227541], 99.50th=[227541], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 1514, max= 2039, per=40.97%, avg=1776.50, stdev=371.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2169KiB/s (2222kB/s)(10.0MiB/4720msec); 0 zone resets clat (msec): min=254, max=655, avg=448.90, stdev=155.36 lat (msec): min=255, max=655, avg=448.97, stdev=155.36 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 279], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 456], 60.00th=[ 523], | 70.00th=[ 527], 80.00th=[ 567], 90.00th=[ 634], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1961, max= 4096, per=44.51%, avg=2701.50, stdev=1073.90, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.33, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=8.33%, 500=41.67%, 750=41.67% cpu : usr=0.00%, sys=8.71%, ctx=148, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182042: Tue Jan 13 07:07:44 2026 read: IOPS=1, BW=1301KiB/s (1332kB/s)(6144KiB/4723msec) clat (usec): min=570, max=680976, avg=263153.88, stdev=260194.65 lat (usec): min=572, max=680977, avg=263155.07, stdev=260194.37 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 3195], | 30.00th=[ 3195], 40.00th=[200279], 50.00th=[200279], 60.00th=[278922], | 70.00th=[417334], 80.00th=[417334], 90.00th=[683672], 95.00th=[683672], | 99.00th=[683672], 99.50th=[683672], 99.90th=[683672], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 2015, max= 4096, per=62.65%, avg=2716.67, stdev=1194.60, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1301KiB/s (1332kB/s)(6144KiB/4723msec); 0 zone resets clat (msec): min=187, max=994, avg=523.74, stdev=322.36 lat (msec): min=187, max=994, avg=523.84, stdev=322.37 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 550], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1402, max= 2027, per=31.05%, avg=1884.80, stdev=271.15, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=25.00%, 500=25.00%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=7.56%, ctx=169, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=182043: Tue Jan 13 07:07:44 2026 read: IOPS=1, BW=1188KiB/s (1217kB/s)(5120KiB/4309msec) clat (usec): min=671, max=453456, avg=295330.18, stdev=183183.18 lat (usec): min=672, max=453458, avg=295331.79, stdev=183183.24 clat percentiles (usec): | 1.00th=[ 668], 5.00th=[ 668], 10.00th=[ 668], 20.00th=[ 668], | 30.00th=[274727], 40.00th=[274727], 50.00th=[304088], 60.00th=[304088], | 70.00th=[442500], 80.00th=[442500], 90.00th=[455082], 95.00th=[455082], | 99.00th=[455082], 99.50th=[455082], 99.90th=[455082], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 2039, max= 6059, per=93.38%, avg=4049.00, stdev=2842.57, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1663KiB/s (1703kB/s)(7168KiB/4309msec); 0 zone resets clat (msec): min=200, max=641, avg=404.43, stdev=188.60 lat (msec): min=201, max=641, avg=404.50, stdev=188.63 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 203], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 376], 60.00th=[ 518], | 70.00th=[ 518], 80.00th=[ 617], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1446, max= 4096, per=44.70%, avg=2713.00, stdev=1253.57, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=25.00% cpu : usr=0.07%, sys=9.19%, 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=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=4336KiB/s (4440kB/s), 434KiB/s-2179KiB/s (444kB/s-2232kB/s), io=20.0MiB (20.0MB), run=3289-4723msec WRITE: bw=6071KiB/s (6216kB/s), 1301KiB/s-2169KiB/s (1332kB/s-2222kB/s), io=28.0MiB (29.4MB), run=3289-4723msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182036: Tue Jan 13 07:07:44 2026 read: IOPS=1, BW=1553KiB/s (1590kB/s)(7168KiB/4616msec) clat (msec): min=115, max=830, avg=314.54, stdev=247.89 lat (msec): min=115, max=830, avg=314.54, stdev=247.89 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 127], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 222], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 372], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1537, max= 4031, per=75.07%, avg=2872.25, stdev=1329.45, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1109KiB/s (1136kB/s)(5120KiB/4616msec); 0 zone resets clat (msec): min=317, max=640, avg=446.83, stdev=125.89 lat (msec): min=317, max=641, avg=447.06, stdev=126.19 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1921, max= 2043, per=37.42%, avg=2004.50, stdev=56.18, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=2.58%, ctx=59, 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=182037: Tue Jan 13 07:07:44 2026 read: IOPS=0, BW=383KiB/s (392kB/s)(2048KiB/5352msec) clat (msec): min=270, max=302, avg=286.47, stdev=22.59 lat (msec): min=270, max=302, avg=286.47, stdev=22.59 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 1738, max= 2043, per=49.41%, avg=1890.50, stdev=215.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1913KiB/s (1959kB/s)(10.0MiB/5352msec); 0 zone resets clat (msec): min=125, max=1444, avg=469.08, stdev=397.36 lat (msec): min=125, max=1444, avg=469.29, stdev=397.29 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 153], | 30.00th=[ 230], 40.00th=[ 255], 50.00th=[ 288], 60.00th=[ 305], | 70.00th=[ 542], 80.00th=[ 667], 90.00th=[ 684], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 2000, max= 3893, per=42.68%, avg=2286.29, stdev=708.56, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=25.00%, 500=41.67%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=3.92%, ctx=88, 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=182038: Tue Jan 13 07:07:44 2026 read: IOPS=1, BW=1159KiB/s (1187kB/s)(6144KiB/5299msec) clat (msec): min=61, max=988, avg=478.58, stdev=377.26 lat (msec): min=61, max=988, avg=478.58, stdev=377.26 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 397], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 1946, max= 4055, per=65.75%, avg=2515.75, stdev=1027.00, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1159KiB/s (1187kB/s)(6144KiB/5299msec); 0 zone resets clat (msec): min=288, max=535, avg=379.02, stdev=84.52 lat (msec): min=288, max=541, avg=380.33, stdev=86.56 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 376], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 535], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 1622, max= 2023, per=36.17%, avg=1937.50, stdev=157.15, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 100=8.33%, 500=66.67%, 750=8.33%, 1000=16.67% cpu : usr=0.06%, sys=3.89%, ctx=85, 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=182039: Tue Jan 13 07:07:44 2026 read: IOPS=1, BW=1093KiB/s (1119kB/s)(5120KiB/4686msec) clat (msec): min=86, max=746, avg=342.79, stdev=246.11 lat (msec): min=86, max=746, avg=342.79, stdev=246.11 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2027, max= 4000, per=70.31%, avg=2690.00, stdev=1134.52, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1530KiB/s (1566kB/s)(7168KiB/4686msec); 0 zone resets clat (msec): min=182, max=751, avg=413.71, stdev=201.09 lat (msec): min=183, max=751, avg=413.80, stdev=201.10 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 234], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 439], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 550], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1553, max= 3842, per=41.94%, avg=2246.67, stdev=803.80, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=2.86%, ctx=70, 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=3827KiB/s (3918kB/s), 383KiB/s-1553KiB/s (392kB/s-1590kB/s), io=20.0MiB (20.0MB), run=4616-5352msec WRITE: bw=5357KiB/s (5486kB/s), 1109KiB/s-1913KiB/s (1136kB/s-1959kB/s), io=28.0MiB (29.4MB), run=4616-5352msec 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=182054: Tue Jan 13 07:08:02 2026 read: IOPS=0, BW=2749KiB/s (2815kB/s)(12.0MiB/4470msec) clat (msec): min=655, max=2710, avg=1454.04, stdev=1101.18 lat (msec): min=655, max=2710, avg=1454.04, stdev=1101.18 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 2702], 80.00th=[ 2702], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 8110, max= 8143, per=100.00%, avg=8126.50, stdev=23.33, 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=9.53%, ctx=236, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182055: Tue Jan 13 07:08:02 2026 read: IOPS=0, BW=663KiB/s (679kB/s)(4096KiB/6176msec) clat (nsec): min=3472.0M, max=3472.0M, avg=3472952049.00, stdev= 0.00 lat (nsec): min=3472.0M, max=3472.0M, avg=3472968691.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3473], 5.00th=[ 3473], 10.00th=[ 3473], 20.00th=[ 3473], | 30.00th=[ 3473], 40.00th=[ 3473], 50.00th=[ 3473], 60.00th=[ 3473], | 70.00th=[ 3473], 80.00th=[ 3473], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 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=1326KiB/s (1358kB/s)(8192KiB/6176msec); 0 zone resets clat (msec): min=969, max=1379, avg=1174.11, stdev=289.79 lat (msec): min=969, max=1380, avg=1175.03, stdev=290.56 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=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7861, max= 7861, per=100.00%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.78%, ctx=526, 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=182056: Tue Jan 13 07:08:02 2026 write: IOPS=0, BW=1987KiB/s (2034kB/s)(12.0MiB/6185msec); 0 zone resets clat (msec): min=515, max=4272, avg=1898.84, stdev=2064.68 lat (msec): min=515, max=4272, avg=1899.55, stdev=2064.68 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 4279], 80.00th=[ 4279], 90.00th=[ 4279], 95.00th=[ 4279], | 99.00th=[ 4279], 99.50th=[ 4279], 99.90th=[ 4279], 99.95th=[ 4279], | 99.99th=[ 4279] bw ( KiB/s): min= 7861, max= 8110, per=100.00%, avg=7985.50, stdev=176.07, 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=0.03%, sys=2.38%, ctx=65, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182057: Tue Jan 13 07:08:02 2026 write: IOPS=0, BW=2098KiB/s (2149kB/s)(12.0MiB/5856msec); 0 zone resets clat (msec): min=361, max=4381, avg=1822.98, stdev=2223.24 lat (msec): min=362, max=4381, avg=1823.62, stdev=2223.05 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 4396], 80.00th=[ 4396], 90.00th=[ 4396], 95.00th=[ 4396], | 99.00th=[ 4396], 99.50th=[ 4396], 99.90th=[ 4396], 99.95th=[ 4396], | 99.99th=[ 4396] bw ( KiB/s): min= 7861, max= 8110, per=100.00%, avg=7985.50, stdev=176.07, 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=2.13%, ctx=57, 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=2653KiB/s (2717kB/s), 663KiB/s-2749KiB/s (679kB/s-2815kB/s), io=16.0MiB (16.8MB), run=4470-6176msec WRITE: bw=5298KiB/s (5425kB/s), 1326KiB/s-2098KiB/s (1358kB/s-2149kB/s), io=32.0MiB (33.6MB), run=5856-6185msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182050: Tue Jan 13 07:08:02 2026 read: IOPS=0, BW=2088KiB/s (2138kB/s)(12.0MiB/5885msec) clat (msec): min=636, max=3846, avg=1894.54, stdev=1713.41 lat (msec): min=636, max=3846, avg=1894.54, stdev=1713.41 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 3842], 80.00th=[ 3842], 90.00th=[ 3842], 95.00th=[ 3842], | 99.00th=[ 3842], 99.50th=[ 3842], 99.90th=[ 3842], 99.95th=[ 3842], | 99.99th=[ 3842] bw ( KiB/s): min= 8094, max= 8192, per=100.00%, avg=8143.00, stdev=69.30, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.26%, ctx=41, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182051: Tue Jan 13 07:08:02 2026 read: IOPS=0, BW=855KiB/s (875kB/s)(4096KiB/4792msec) clat (nsec): min=350630k, max=350630k, avg=350629632.00, stdev= 0.00 lat (nsec): min=350633k, max=350633k, avg=350632875.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 6606, max= 6606, per=100.00%, avg=6606.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1710KiB/s (1751kB/s)(8192KiB/4792msec); 0 zone resets clat (msec): min=561, max=3642, avg=2102.06, stdev=2178.16 lat (msec): min=562, max=3642, avg=2102.30, stdev=2178.08 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 3641], | 70.00th=[ 3641], 80.00th=[ 3641], 90.00th=[ 3641], 95.00th=[ 3641], | 99.00th=[ 3641], 99.50th=[ 3641], 99.90th=[ 3641], 99.95th=[ 3641], | 99.99th=[ 3641] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, 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=3.94%, ctx=67, 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=182052: Tue Jan 13 07:08:02 2026 write: IOPS=0, BW=1795KiB/s (1839kB/s)(12.0MiB/6844msec); 0 zone resets clat (msec): min=512, max=5315, avg=2208.93, stdev=2694.19 lat (msec): min=513, max=5315, avg=2210.61, stdev=2693.20 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 5336], 80.00th=[ 5336], 90.00th=[ 5336], 95.00th=[ 5336], | 99.00th=[ 5336], 99.50th=[ 5336], 99.90th=[ 5336], 99.95th=[ 5336], | 99.99th=[ 5336] bw ( KiB/s): min= 7968, max= 8110, per=100.00%, avg=8039.00, stdev=100.41, 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=1.96%, ctx=72, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182053: Tue Jan 13 07:08:02 2026 write: IOPS=0, BW=1819KiB/s (1863kB/s)(12.0MiB/6755msec); 0 zone resets clat (msec): min=272, max=5309, avg=2176.76, stdev=2734.29 lat (msec): min=273, max=5310, avg=2177.10, stdev=2734.29 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 5336], 80.00th=[ 5336], 90.00th=[ 5336], 95.00th=[ 5336], | 99.00th=[ 5336], 99.50th=[ 5336], 99.90th=[ 5336], 99.95th=[ 5336], | 99.99th=[ 5336] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, 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=0.06%, sys=2.55%, ctx=58, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2784KiB/s (2851kB/s), 855KiB/s-2088KiB/s (875kB/s-2138kB/s), io=16.0MiB (16.8MB), run=4792-5885msec WRITE: bw=4788KiB/s (4903kB/s), 1710KiB/s-1819KiB/s (1751kB/s-1863kB/s), io=32.0MiB (33.6MB), run=4792-6844msec