== sanity test 398b: DIO and buffer IO race ============== 01:43:48 (1786945428) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.06458 s, 16.4 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=185622: Mon Aug 17 01:44:54 2026 read: IOPS=26, BW=107KiB/s (110kB/s)(5992KiB/55742msec) clat (usec): min=48, max=727348, avg=20085.34, stdev=21003.61 lat (usec): min=49, max=727349, avg=20086.20, stdev=21003.62 clat percentiles (usec): | 1.00th=[ 96], 5.00th=[ 8029], 10.00th=[ 9634], 20.00th=[ 11338], | 30.00th=[ 13173], 40.00th=[ 15270], 50.00th=[ 17957], 60.00th=[ 20317], | 70.00th=[ 23200], 80.00th=[ 26870], 90.00th=[ 32375], 95.00th=[ 38536], | 99.00th=[ 53740], 99.50th=[ 58983], 99.90th=[ 90702], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 6, max= 168, per=25.20%, avg=107.11, stdev=23.89, samples=110 iops : min= 1, max= 42, avg=26.42, stdev= 6.06, samples=110 write: IOPS=28, BW=113KiB/s (116kB/s)(6296KiB/55742msec); 0 zone resets clat (usec): min=870, max=93956, avg=16215.83, stdev=12859.63 lat (usec): min=870, max=93957, avg=16217.20, stdev=12859.51 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 2442], 10.00th=[ 2966], 20.00th=[ 4080], | 30.00th=[ 6783], 40.00th=[10421], 50.00th=[13042], 60.00th=[16319], | 70.00th=[20841], 80.00th=[26346], 90.00th=[34341], 95.00th=[42206], | 99.00th=[54789], 99.50th=[58983], 99.90th=[66847], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 39, max= 200, per=25.40%, avg=113.03, stdev=33.49, samples=109 iops : min= 9, max= 50, avg=27.90, stdev= 8.43, samples=109 lat (usec) : 50=0.03%, 100=0.55%, 250=0.81%, 1000=0.10% lat (msec) : 2=1.43%, 4=8.40%, 10=14.13%, 20=37.57%, 50=35.35% lat (msec) : 100=1.60%, 750=0.03% cpu : usr=0.10%, sys=21.41%, ctx=9380, 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=185623: Mon Aug 17 01:44:54 2026 read: IOPS=26, BW=107KiB/s (110kB/s)(5940KiB/55474msec) clat (usec): min=43, max=71946, avg=20021.81, stdev=10005.59 lat (usec): min=44, max=71947, avg=20022.73, stdev=10005.65 clat percentiles (usec): | 1.00th=[ 112], 5.00th=[ 8160], 10.00th=[ 9765], 20.00th=[11469], | 30.00th=[13435], 40.00th=[15795], 50.00th=[18482], 60.00th=[21365], | 70.00th=[23987], 80.00th=[27395], 90.00th=[33162], 95.00th=[38011], | 99.00th=[52167], 99.50th=[57934], 99.90th=[68682], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 6, max= 160, per=25.12%, avg=106.75, stdev=24.63, samples=110 iops : min= 1, max= 40, avg=26.33, stdev= 6.21, samples=110 write: IOPS=28, BW=114KiB/s (117kB/s)(6348KiB/55474msec); 0 zone resets clat (usec): min=861, max=716358, avg=16132.86, stdev=21777.13 lat (usec): min=861, max=716359, avg=16133.96, stdev=21777.15 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 2311], 10.00th=[ 2999], 20.00th=[ 4015], | 30.00th=[ 6194], 40.00th=[ 9765], 50.00th=[ 12780], 60.00th=[ 15926], | 70.00th=[ 20055], 80.00th=[ 25297], 90.00th=[ 32900], 95.00th=[ 39584], | 99.00th=[ 58459], 99.50th=[ 64226], 99.90th=[108528], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 55, max= 207, per=25.83%, avg=114.93, stdev=30.38, samples=109 iops : min= 13, max= 51, avg=28.38, stdev= 7.54, samples=109 lat (usec) : 50=0.03%, 100=0.33%, 250=0.55%, 1000=0.10% lat (msec) : 2=1.73%, 4=8.53%, 10=15.30%, 20=36.10%, 50=35.84% lat (msec) : 100=1.40%, 250=0.07%, 750=0.03% cpu : usr=0.12%, sys=21.58%, ctx=9368, 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=185624: Mon Aug 17 01:44:54 2026 read: IOPS=26, BW=107KiB/s (109kB/s)(6028KiB/56406msec) clat (usec): min=35, max=92517, avg=19715.17, stdev=10782.16 lat (usec): min=36, max=92517, avg=19716.27, stdev=10782.11 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 7832], 10.00th=[ 9372], 20.00th=[11469], | 30.00th=[13304], 40.00th=[15401], 50.00th=[17957], 60.00th=[20317], | 70.00th=[23200], 80.00th=[26608], 90.00th=[31851], 95.00th=[39060], | 99.00th=[56886], 99.50th=[66323], 99.90th=[87557], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 47, max= 192, per=25.34%, avg=107.68, stdev=27.16, samples=111 iops : min= 11, max= 48, avg=26.57, stdev= 6.87, samples=111 write: IOPS=27, BW=111KiB/s (114kB/s)(6260KiB/56406msec); 0 zone resets clat (usec): min=802, max=693771, avg=16967.14, stdev=21602.80 lat (usec): min=802, max=693772, avg=16968.38, stdev=21602.82 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 2442], 10.00th=[ 3032], 20.00th=[ 4178], | 30.00th=[ 7046], 40.00th=[ 10552], 50.00th=[ 13304], 60.00th=[ 16450], | 70.00th=[ 20841], 80.00th=[ 27395], 90.00th=[ 35390], 95.00th=[ 42730], | 99.00th=[ 56361], 99.50th=[ 62653], 99.90th=[ 82314], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 55, max= 200, per=25.09%, avg=111.64, stdev=29.24, samples=111 iops : min= 13, max= 50, avg=27.56, stdev= 7.38, samples=111 lat (usec) : 50=0.13%, 100=0.36%, 250=0.72%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=1.46%, 4=8.11%, 10=14.42%, 20=38.38%, 50=34.38% lat (msec) : 100=1.89%, 750=0.03% cpu : usr=0.13%, sys=21.26%, ctx=9157, 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=185625: Mon Aug 17 01:44:54 2026 read: IOPS=27, BW=109KiB/s (112kB/s)(6052KiB/55574msec) clat (usec): min=49, max=95349, avg=19570.83, stdev=10690.96 lat (usec): min=50, max=95350, avg=19571.77, stdev=10691.00 clat percentiles (usec): | 1.00th=[ 94], 5.00th=[ 8094], 10.00th=[ 9372], 20.00th=[11469], | 30.00th=[13173], 40.00th=[15270], 50.00th=[17695], 60.00th=[20055], | 70.00th=[23462], 80.00th=[27132], 90.00th=[32900], 95.00th=[37487], | 99.00th=[58459], 99.50th=[65274], 99.90th=[90702], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 55, max= 183, per=25.78%, avg=109.58, stdev=25.77, samples=109 iops : min= 13, max= 45, avg=27.04, stdev= 6.50, samples=109 write: IOPS=28, BW=112KiB/s (115kB/s)(6236KiB/55574msec); 0 zone resets clat (usec): min=924, max=724067, avg=16557.36, stdev=22092.78 lat (usec): min=924, max=724070, avg=16563.97, stdev=22098.67 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 2474], 10.00th=[ 2999], 20.00th=[ 4015], | 30.00th=[ 6718], 40.00th=[ 10552], 50.00th=[ 13042], 60.00th=[ 16188], | 70.00th=[ 20841], 80.00th=[ 25822], 90.00th=[ 34341], 95.00th=[ 41157], | 99.00th=[ 59507], 99.50th=[ 66847], 99.90th=[ 85459], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 48, max= 199, per=25.39%, avg=113.00, stdev=31.10, samples=109 iops : min= 12, max= 49, avg=27.90, stdev= 7.80, samples=109 lat (usec) : 50=0.07%, 100=0.59%, 250=0.75%, 500=0.03%, 1000=0.07% lat (msec) : 2=1.46%, 4=8.66%, 10=14.06%, 20=38.48%, 50=34.05% lat (msec) : 100=1.76%, 750=0.03% cpu : usr=0.11%, sys=21.46%, ctx=9262, 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=426KiB/s (436kB/s), 107KiB/s-109KiB/s (109kB/s-112kB/s), io=23.4MiB (24.6MB), run=55474-56406msec WRITE: bw=446KiB/s (456kB/s), 111KiB/s-114KiB/s (114kB/s-117kB/s), io=24.6MiB (25.7MB), run=55474-56406msec rand-rw: (groupid=0, jobs=1): err= 0: pid=185617: Mon Aug 17 01:45:07 2026 read: IOPS=21, BW=86.5KiB/s (88.5kB/s)(5992KiB/69300msec) clat (msec): min=3, max=729, avg=19.27, stdev=23.40 lat (msec): min=3, max=729, avg=19.27, stdev=23.40 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 40], 95.00th=[ 50], | 99.00th=[ 72], 99.50th=[ 84], 99.90th=[ 122], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 31, max= 288, per=25.20%, avg=86.93, stdev=49.73, samples=137 iops : min= 7, max= 72, avg=21.33, stdev=12.55, samples=137 write: IOPS=22, BW=90.9KiB/s (93.0kB/s)(6296KiB/69300msec); 0 zone resets clat (msec): min=6, max=125, avg=25.57, stdev=15.78 lat (msec): min=6, max=125, avg=25.57, stdev=15.78 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 79], 99.50th=[ 91], 99.90th=[ 114], 99.95th=[ 126], | 99.99th=[ 126] bw ( KiB/s): min= 23, max= 248, per=25.29%, avg=91.31, stdev=47.74, samples=137 iops : min= 5, max= 62, avg=22.42, stdev=12.05, samples=137 lat (msec) : 4=0.07%, 10=19.34%, 20=39.32%, 50=34.96%, 100=6.12% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.10%, sys=11.06%, ctx=6252, 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=185618: Mon Aug 17 01:45:07 2026 read: IOPS=21, BW=85.5KiB/s (87.6kB/s)(5940KiB/69465msec) clat (msec): min=3, max=702, avg=19.61, stdev=23.16 lat (msec): min=3, max=702, avg=19.61, stdev=23.16 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 41], 95.00th=[ 52], | 99.00th=[ 71], 99.50th=[ 82], 99.90th=[ 117], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 16, max= 248, per=24.88%, avg=85.82, stdev=48.25, samples=137 iops : min= 4, max= 62, avg=21.05, stdev=12.16, samples=137 write: IOPS=22, BW=91.4KiB/s (93.6kB/s)(6348KiB/69465msec); 0 zone resets clat (msec): min=6, max=115, avg=25.31, stdev=15.68 lat (msec): min=6, max=115, avg=25.31, stdev=15.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 82], 99.50th=[ 91], 99.90th=[ 105], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 31, max= 248, per=25.34%, avg=91.48, stdev=47.45, samples=137 iops : min= 7, max= 62, avg=22.47, stdev=12.00, samples=137 lat (msec) : 4=0.20%, 10=17.84%, 20=40.43%, 50=34.96%, 100=6.41% lat (msec) : 250=0.13%, 750=0.03% cpu : usr=0.12%, sys=11.07%, ctx=6192, 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=185619: Mon Aug 17 01:45:07 2026 read: IOPS=21, BW=87.1KiB/s (89.2kB/s)(6028KiB/69176msec) clat (usec): min=3524, max=97499, avg=19128.94, stdev=14472.61 lat (usec): min=3525, max=97501, avg=19130.22, stdev=14472.80 clat percentiles (usec): | 1.00th=[ 4490], 5.00th=[ 5538], 10.00th=[ 6390], 20.00th=[ 8291], | 30.00th=[10159], 40.00th=[11994], 50.00th=[14091], 60.00th=[16581], | 70.00th=[20841], 80.00th=[28967], 90.00th=[39584], 95.00th=[50594], | 99.00th=[68682], 99.50th=[76022], 99.90th=[90702], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 31, max= 264, per=25.31%, avg=87.33, stdev=48.45, samples=136 iops : min= 7, max= 66, avg=21.43, stdev=12.23, samples=136 write: IOPS=22, BW=90.5KiB/s (92.7kB/s)(6260KiB/69176msec); 0 zone resets clat (msec): min=6, max=701, avg=25.66, stdev=23.38 lat (msec): min=6, max=701, avg=25.66, stdev=23.38 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 36], 90.00th=[ 47], 95.00th=[ 55], | 99.00th=[ 85], 99.50th=[ 97], 99.90th=[ 129], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 31, max= 264, per=25.04%, avg=90.40, stdev=47.86, samples=136 iops : min= 7, max= 66, avg=22.19, stdev=12.09, samples=136 lat (msec) : 4=0.20%, 10=18.72%, 20=39.23%, 50=35.29%, 100=6.41% lat (msec) : 250=0.13%, 750=0.03% cpu : usr=0.09%, sys=10.99%, ctx=6198, 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=185620: Mon Aug 17 01:45:07 2026 read: IOPS=21, BW=87.1KiB/s (89.2kB/s)(6052KiB/69502msec) clat (usec): min=3630, max=96730, avg=18941.88, stdev=14397.18 lat (usec): min=3631, max=96730, avg=18943.08, stdev=14397.21 clat percentiles (usec): | 1.00th=[ 4621], 5.00th=[ 5669], 10.00th=[ 6456], 20.00th=[ 7963], | 30.00th=[10028], 40.00th=[11994], 50.00th=[13960], 60.00th=[16319], | 70.00th=[20841], 80.00th=[27919], 90.00th=[39060], 95.00th=[50594], | 99.00th=[68682], 99.50th=[74974], 99.90th=[92799], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 16, max= 280, per=25.26%, avg=87.16, stdev=48.95, samples=137 iops : min= 4, max= 70, avg=21.39, stdev=12.37, samples=137 write: IOPS=22, BW=89.7KiB/s (91.9kB/s)(6236KiB/69502msec); 0 zone resets clat (msec): min=5, max=699, avg=26.08, stdev=23.55 lat (msec): min=5, max=699, avg=26.08, stdev=23.55 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 47], 95.00th=[ 57], | 99.00th=[ 86], 99.50th=[ 99], 99.90th=[ 128], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 24, max= 232, per=24.89%, avg=89.85, stdev=46.85, samples=137 iops : min= 6, max= 58, avg=22.06, stdev=11.84, samples=137 lat (msec) : 4=0.03%, 10=18.82%, 20=39.13%, 50=35.61%, 100=6.25% lat (msec) : 250=0.13%, 750=0.03% cpu : usr=0.11%, sys=10.87%, ctx=6215, 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=345KiB/s (354kB/s), 85.5KiB/s-87.1KiB/s (87.6kB/s-89.2kB/s), io=23.4MiB (24.6MB), run=69176-69502msec WRITE: bw=362KiB/s (370kB/s), 89.7KiB/s-91.4KiB/s (91.9kB/s-93.6kB/s), io=24.6MiB (25.7MB), run=69176-69502msec 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=185656: Mon Aug 17 01:45:30 2026 read: IOPS=21, BW=348KiB/s (357kB/s)(5920KiB/16988msec) clat (usec): min=38, max=77561, avg=22626.01, stdev=12109.03 lat (usec): min=38, max=77562, avg=22627.08, stdev=12109.01 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 159], 10.00th=[10552], 20.00th=[13566], | 30.00th=[15926], 40.00th=[18220], 50.00th=[21365], 60.00th=[24249], | 70.00th=[27132], 80.00th=[31065], 90.00th=[37487], 95.00th=[44303], | 99.00th=[57410], 99.50th=[67634], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 223, max= 544, per=24.73%, avg=342.24, stdev=82.57, samples=33 iops : min= 13, max= 34, avg=20.91, stdev= 5.24, samples=33 write: IOPS=23, BW=375KiB/s (384kB/s)(6368KiB/16988msec); 0 zone resets clat (usec): min=1504, max=95037, avg=21512.14, stdev=14690.61 lat (usec): min=1505, max=95039, avg=21514.17, stdev=14690.64 clat percentiles (usec): | 1.00th=[ 2769], 5.00th=[ 4555], 10.00th=[ 5473], 20.00th=[ 8225], | 30.00th=[11863], 40.00th=[14877], 50.00th=[17695], 60.00th=[21890], | 70.00th=[26870], 80.00th=[33162], 90.00th=[43779], 95.00th=[50594], | 99.00th=[60031], 99.50th=[71828], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 63, max= 640, per=25.57%, avg=372.33, stdev=96.68, samples=33 iops : min= 3, max= 40, avg=22.79, stdev= 6.14, samples=33 lat (usec) : 50=0.13%, 100=0.91%, 250=1.82%, 500=0.13% lat (msec) : 2=0.26%, 4=1.56%, 10=12.63%, 20=33.33%, 50=45.05% lat (msec) : 100=4.17% cpu : usr=0.10%, sys=24.17%, ctx=2825, 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=185657: Mon Aug 17 01:45:30 2026 read: IOPS=21, BW=348KiB/s (356kB/s)(5744KiB/16522msec) clat (usec): min=61, max=76192, avg=23071.95, stdev=12595.40 lat (usec): min=62, max=76193, avg=23073.06, stdev=12595.43 clat percentiles (usec): | 1.00th=[ 96], 5.00th=[ 221], 10.00th=[10683], 20.00th=[13304], | 30.00th=[16319], 40.00th=[19006], 50.00th=[21103], 60.00th=[23725], | 70.00th=[26870], 80.00th=[31851], 90.00th=[38536], 95.00th=[44827], | 99.00th=[64750], 99.50th=[70779], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 185, max= 512, per=25.13%, avg=347.81, stdev=87.86, samples=32 iops : min= 11, max= 32, avg=21.25, stdev= 5.67, samples=32 write: IOPS=24, BW=396KiB/s (406kB/s)(6544KiB/16522msec); 0 zone resets clat (usec): min=1569, max=75065, avg=19847.65, stdev=13506.87 lat (usec): min=1570, max=75067, avg=19849.84, stdev=13507.17 clat percentiles (usec): | 1.00th=[ 2933], 5.00th=[ 4047], 10.00th=[ 5145], 20.00th=[ 7701], | 30.00th=[10945], 40.00th=[13829], 50.00th=[16909], 60.00th=[20841], | 70.00th=[24511], 80.00th=[29492], 90.00th=[38011], 95.00th=[45876], | 99.00th=[60556], 99.50th=[67634], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 224, max= 574, per=26.62%, avg=387.53, stdev=86.04, samples=32 iops : min= 14, max= 35, avg=23.75, stdev= 5.19, samples=32 lat (usec) : 100=0.52%, 250=1.95% lat (msec) : 2=0.26%, 4=2.21%, 10=12.63%, 20=33.72%, 50=44.53% lat (msec) : 100=4.17% cpu : usr=0.09%, sys=24.92%, ctx=2957, 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=185658: Mon Aug 17 01:45:30 2026 read: IOPS=22, BW=361KiB/s (370kB/s)(6256KiB/17306msec) clat (usec): min=74, max=105340, avg=23921.67, stdev=14247.72 lat (usec): min=75, max=105342, avg=23922.89, stdev=14247.65 clat percentiles (usec): | 1.00th=[ 97], 5.00th=[ 137], 10.00th=[ 10421], 20.00th=[ 13829], | 30.00th=[ 16319], 40.00th=[ 19530], 50.00th=[ 22414], 60.00th=[ 24773], | 70.00th=[ 28181], 80.00th=[ 33424], 90.00th=[ 40109], 95.00th=[ 46400], | 99.00th=[ 86508], 99.50th=[103285], 99.90th=[105382], 99.95th=[105382], | 99.99th=[105382] bw ( KiB/s): min= 191, max= 512, per=26.13%, avg=361.71, stdev=88.62, samples=34 iops : min= 11, max= 32, avg=22.15, stdev= 5.64, samples=34 write: IOPS=21, BW=349KiB/s (357kB/s)(6032KiB/17306msec); 0 zone resets clat (usec): min=1911, max=74689, avg=20793.34, stdev=14580.35 lat (usec): min=1914, max=74692, avg=20795.25, stdev=14580.47 clat percentiles (usec): | 1.00th=[ 2474], 5.00th=[ 4080], 10.00th=[ 5014], 20.00th=[ 7832], | 30.00th=[10945], 40.00th=[13435], 50.00th=[17171], 60.00th=[21365], | 70.00th=[26084], 80.00th=[32375], 90.00th=[40633], 95.00th=[49546], | 99.00th=[65274], 99.50th=[70779], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 95, max= 608, per=23.54%, avg=342.74, stdev=109.70, samples=34 iops : min= 5, max= 38, avg=20.97, stdev= 6.96, samples=34 lat (usec) : 100=0.78%, 250=2.21%, 500=0.13% lat (msec) : 2=0.39%, 4=2.08%, 10=12.24%, 20=31.25%, 50=46.88% lat (msec) : 100=3.65%, 250=0.39% cpu : usr=0.13%, sys=23.20%, ctx=2910, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185659: Mon Aug 17 01:45:30 2026 read: IOPS=22, BW=357KiB/s (365kB/s)(6032KiB/16905msec) clat (usec): min=56, max=72721, avg=22141.96, stdev=11997.86 lat (usec): min=57, max=72723, avg=22142.92, stdev=11997.92 clat percentiles (usec): | 1.00th=[ 75], 5.00th=[ 123], 10.00th=[ 9241], 20.00th=[13566], | 30.00th=[16450], 40.00th=[18482], 50.00th=[21103], 60.00th=[23725], | 70.00th=[26870], 80.00th=[30540], 90.00th=[36963], 95.00th=[42206], | 99.00th=[59507], 99.50th=[64750], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 223, max= 509, per=25.52%, avg=353.24, stdev=80.48, samples=33 iops : min= 13, max= 31, avg=21.61, stdev= 5.02, samples=33 write: IOPS=23, BW=370KiB/s (379kB/s)(6256KiB/16905msec); 0 zone resets clat (usec): min=1657, max=97654, avg=21602.50, stdev=15690.38 lat (usec): min=1658, max=97657, avg=21604.52, stdev=15690.55 clat percentiles (usec): | 1.00th=[ 2147], 5.00th=[ 4555], 10.00th=[ 5276], 20.00th=[ 7963], | 30.00th=[11338], 40.00th=[14353], 50.00th=[17433], 60.00th=[21627], | 70.00th=[27395], 80.00th=[33162], 90.00th=[42206], 95.00th=[49546], | 99.00th=[76022], 99.50th=[78119], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 192, max= 633, per=25.23%, avg=367.36, stdev=97.87, samples=33 iops : min= 12, max= 39, avg=22.48, stdev= 6.22, samples=33 lat (usec) : 100=1.43%, 250=2.21%, 500=0.39% lat (msec) : 2=0.39%, 4=1.43%, 10=12.76%, 20=32.42%, 50=45.18% lat (msec) : 100=3.78% cpu : usr=0.11%, sys=23.81%, ctx=2724, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1384KiB/s (1417kB/s), 348KiB/s-361KiB/s (356kB/s-370kB/s), io=23.4MiB (24.5MB), run=16522-17306msec WRITE: bw=1456KiB/s (1491kB/s), 349KiB/s-396KiB/s (357kB/s-406kB/s), io=24.6MiB (25.8MB), run=16522-17306msec rand-rw: (groupid=0, jobs=1): err= 0: pid=185652: Mon Aug 17 01:45:32 2026 read: IOPS=18, BW=303KiB/s (310kB/s)(5920KiB/19529msec) clat (usec): min=4486, max=93723, avg=21197.74, stdev=15369.76 lat (usec): min=4487, max=93725, avg=21198.65, stdev=15369.79 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 6456], 10.00th=[ 7635], 20.00th=[ 9765], | 30.00th=[11338], 40.00th=[12911], 50.00th=[16057], 60.00th=[20055], | 70.00th=[23987], 80.00th=[30016], 90.00th=[41681], 95.00th=[54789], | 99.00th=[77071], 99.50th=[83362], 99.90th=[93848], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 127, max= 736, per=24.00%, avg=290.84, stdev=143.16, samples=38 iops : min= 7, max= 46, avg=17.58, stdev= 9.10, samples=38 write: IOPS=20, BW=326KiB/s (334kB/s)(6368KiB/19529msec); 0 zone resets clat (msec): min=7, max=123, avg=29.25, stdev=18.51 lat (msec): min=7, max=123, avg=29.25, stdev=18.51 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 66], | 99.00th=[ 92], 99.50th=[ 118], 99.90th=[ 124], 99.95th=[ 124], | 99.99th=[ 124] bw ( KiB/s): min= 128, max= 827, per=24.99%, avg=318.66, stdev=154.56, samples=38 iops : min= 8, max= 51, avg=19.34, stdev= 9.78, samples=38 lat (msec) : 10=12.50%, 20=35.42%, 50=42.19%, 100=9.51%, 250=0.39% cpu : usr=0.09%, sys=11.87%, ctx=1774, 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=185653: Mon Aug 17 01:45:32 2026 read: IOPS=18, BW=293KiB/s (300kB/s)(5744KiB/19612msec) clat (msec): min=4, max=136, avg=21.87, stdev=17.39 lat (msec): min=4, max=136, avg=21.87, stdev=17.39 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 21], | 70.00th=[ 25], 80.00th=[ 31], 90.00th=[ 45], 95.00th=[ 58], | 99.00th=[ 86], 99.50th=[ 110], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 127, max= 795, per=23.64%, avg=286.50, stdev=139.25, samples=38 iops : min= 7, max= 49, avg=17.32, stdev= 8.84, samples=38 write: IOPS=20, BW=334KiB/s (342kB/s)(6544KiB/19612msec); 0 zone resets clat (msec): min=8, max=117, avg=28.63, stdev=17.96 lat (msec): min=8, max=117, avg=28.63, stdev=17.96 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 51], 95.00th=[ 65], | 99.00th=[ 92], 99.50th=[ 95], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 127, max= 864, per=25.05%, avg=319.39, stdev=165.86, samples=38 iops : min= 7, max= 54, avg=19.37, stdev=10.50, samples=38 lat (msec) : 10=11.85%, 20=38.80%, 50=39.97%, 100=8.85%, 250=0.52% cpu : usr=0.10%, sys=11.69%, ctx=1690, 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=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=185654: Mon Aug 17 01:45:32 2026 read: IOPS=19, BW=320KiB/s (327kB/s)(6256KiB/19561msec) clat (msec): min=4, max=105, avg=21.42, stdev=16.20 lat (msec): min=4, max=105, avg=21.42, stdev=16.20 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 32], 90.00th=[ 45], 95.00th=[ 58], | 99.00th=[ 77], 99.50th=[ 90], 99.90th=[ 106], 99.95th=[ 106], | 99.99th=[ 106] bw ( KiB/s): min= 95, max= 992, per=26.03%, avg=315.47, stdev=197.40, samples=38 iops : min= 5, max= 62, avg=19.13, stdev=12.44, samples=38 write: IOPS=19, BW=308KiB/s (316kB/s)(6032KiB/19561msec); 0 zone resets clat (msec): min=8, max=134, avg=29.60, stdev=18.76 lat (msec): min=8, max=134, avg=29.60, stdev=18.76 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 65], | 99.00th=[ 109], 99.50th=[ 112], 99.90th=[ 134], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 96, max= 768, per=23.08%, avg=294.32, stdev=138.81, samples=38 iops : min= 6, max= 48, avg=17.82, stdev= 8.85, samples=38 lat (msec) : 10=14.84%, 20=36.20%, 50=38.28%, 100=10.03%, 250=0.65% cpu : usr=0.08%, sys=11.91%, ctx=1654, 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=185655: Mon Aug 17 01:45:32 2026 read: IOPS=19, BW=305KiB/s (313kB/s)(6032KiB/19760msec) clat (msec): min=4, max=150, avg=22.40, stdev=18.73 lat (msec): min=4, max=150, avg=22.40, stdev=18.73 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 34], 90.00th=[ 47], 95.00th=[ 62], | 99.00th=[ 84], 99.50th=[ 113], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 127, max= 960, per=24.85%, avg=301.21, stdev=187.73, samples=39 iops : min= 7, max= 60, avg=18.26, stdev=11.90, samples=39 write: IOPS=19, BW=317KiB/s (324kB/s)(6256KiB/19760msec); 0 zone resets clat (msec): min=6, max=114, avg=28.75, stdev=18.10 lat (msec): min=6, max=114, avg=28.75, stdev=18.10 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 43], 90.00th=[ 54], 95.00th=[ 66], | 99.00th=[ 88], 99.50th=[ 107], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 95, max= 864, per=24.63%, avg=314.00, stdev=178.75, samples=39 iops : min= 5, max= 54, avg=19.05, stdev=11.33, samples=39 lat (msec) : 10=14.71%, 20=34.11%, 50=41.41%, 100=9.24%, 250=0.52% cpu : usr=0.07%, sys=11.43%, ctx=1750, 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=1212KiB/s (1241kB/s), 293KiB/s-320KiB/s (300kB/s-327kB/s), io=23.4MiB (24.5MB), run=19529-19760msec WRITE: bw=1275KiB/s (1306kB/s), 308KiB/s-334KiB/s (316kB/s-342kB/s), io=24.6MiB (25.8MB), run=19529-19760msec 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=185667: Mon Aug 17 01:45:41 2026 read: IOPS=4, BW=4896KiB/s (5014kB/s)(7168KiB/1464msec) clat (msec): min=57, max=244, avg=119.82, stdev=61.94 lat (msec): min=57, max=244, avg=119.82, stdev=61.94 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 69], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 113], 60.00th=[ 114], | 70.00th=[ 114], 80.00th=[ 144], 90.00th=[ 245], 95.00th=[ 245], | 99.00th=[ 245], 99.50th=[ 245], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 4087, max= 5215, per=67.75%, avg=4651.00, stdev=797.62, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=3, BW=3497KiB/s (3581kB/s)(5120KiB/1464msec); 0 zone resets clat (msec): min=75, max=141, avg=116.00, stdev=30.27 lat (msec): min=75, max=142, avg=116.09, stdev=30.27 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 92], 40.00th=[ 92], 50.00th=[ 131], 60.00th=[ 131], | 70.00th=[ 140], 80.00th=[ 140], 90.00th=[ 142], 95.00th=[ 142], | 99.00th=[ 142], 99.50th=[ 142], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 6131, max= 6131, per=63.79%, avg=6131.00, stdev= 0.00, samples=1 iops : min= 5, max= 5, avg= 5.00, stdev= 0.00, samples=1 lat (msec) : 100=41.67%, 250=58.33% cpu : usr=0.14%, sys=24.54%, ctx=109, 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=185668: Mon Aug 17 01:45:41 2026 read: IOPS=0, BW=732KiB/s (749kB/s)(2048KiB/2799msec) clat (usec): min=58865, max=72706, avg=65785.94, stdev=9786.71 lat (usec): min=58866, max=72708, avg=65787.58, stdev=9787.38 clat percentiles (usec): | 1.00th=[58983], 5.00th=[58983], 10.00th=[58983], 20.00th=[58983], | 30.00th=[58983], 40.00th=[58983], 50.00th=[58983], 60.00th=[72877], | 70.00th=[72877], 80.00th=[72877], 90.00th=[72877], 95.00th=[72877], | 99.00th=[72877], 99.50th=[72877], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 1747, max= 2011, per=27.37%, avg=1879.00, stdev=186.68, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3658KiB/s (3746kB/s)(10.0MiB/2799msec); 0 zone resets clat (msec): min=66, max=495, avg=265.64, stdev=148.09 lat (msec): min=66, max=495, avg=265.72, stdev=148.10 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 112], | 30.00th=[ 127], 40.00th=[ 134], 50.00th=[ 288], 60.00th=[ 305], | 70.00th=[ 330], 80.00th=[ 372], 90.00th=[ 430], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 2043, max= 4023, per=32.53%, avg=3126.20, stdev=1009.90, samples=5 iops : min= 1, max= 3, avg= 2.40, stdev= 0.89, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=50.00% cpu : usr=0.04%, sys=21.66%, ctx=139, 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=185669: Mon Aug 17 01:45:41 2026 read: IOPS=2, BW=2060KiB/s (2109kB/s)(6144KiB/2983msec) clat (msec): min=63, max=454, avg=214.26, stdev=164.74 lat (msec): min=63, max=454, avg=214.26, stdev=164.74 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 72], | 30.00th=[ 72], 40.00th=[ 84], 50.00th=[ 84], 60.00th=[ 284], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 2011, max= 4096, per=39.57%, avg=2716.67, stdev=1194.64, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=2, BW=2060KiB/s (2109kB/s)(6144KiB/2983msec); 0 zone resets clat (msec): min=84, max=516, avg=277.39, stdev=158.44 lat (msec): min=84, max=516, avg=277.48, stdev=158.45 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 347], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 2011, max= 3500, per=24.88%, avg=2391.25, stdev=739.32, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=33.33%, 250=16.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=19.52%, ctx=132, 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=185670: Mon Aug 17 01:45:41 2026 read: IOPS=1, BW=1785KiB/s (1827kB/s)(5120KiB/2869msec) clat (msec): min=59, max=531, avg=257.16, stdev=228.89 lat (msec): min=59, max=531, avg=257.16, stdev=228.89 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 61], | 30.00th=[ 83], 40.00th=[ 83], 50.00th=[ 133], 60.00th=[ 133], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 4023, max= 4096, per=59.13%, avg=4059.50, stdev=51.62, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2498KiB/s (2558kB/s)(7168KiB/2869msec); 0 zone resets clat (msec): min=62, max=546, avg=222.24, stdev=178.98 lat (msec): min=62, max=546, avg=222.34, stdev=179.00 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 73], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 133], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 326], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 2011, max= 5224, per=32.18%, avg=3092.67, stdev=1845.86, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 100=33.33%, 250=25.00%, 500=25.00%, 750=16.67% cpu : usr=0.03%, sys=15.59%, ctx=93, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6866KiB/s (7030kB/s), 732KiB/s-4896KiB/s (749kB/s-5014kB/s), io=20.0MiB (20.0MB), run=1464-2983msec WRITE: bw=9612KiB/s (9842kB/s), 2060KiB/s-3658KiB/s (2109kB/s-3746kB/s), io=28.0MiB (29.4MB), run=1464-2983msec rand-rw: (groupid=0, jobs=1): err= 0: pid=185672: Mon Aug 17 01:45:41 2026 read: IOPS=2, BW=2916KiB/s (2986kB/s)(7168KiB/2458msec) clat (usec): min=584, max=485444, avg=184336.96, stdev=149922.10 lat (usec): min=585, max=485445, avg=184338.55, stdev=149921.99 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[115868], | 30.00th=[126354], 40.00th=[126354], 50.00th=[156238], 60.00th=[181404], | 70.00th=[181404], 80.00th=[223347], 90.00th=[484443], 95.00th=[484443], | 99.00th=[484443], 99.50th=[484443], 99.90th=[484443], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 2039, max= 5180, per=52.51%, avg=3771.67, stdev=1595.42, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 write: IOPS=2, BW=2083KiB/s (2133kB/s)(5120KiB/2458msec); 0 zone resets clat (msec): min=140, max=418, avg=223.28, stdev=116.05 lat (msec): min=140, max=418, avg=223.34, stdev=116.02 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 161], 60.00th=[ 161], | 70.00th=[ 243], 80.00th=[ 243], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2048, max= 6119, per=40.61%, avg=4083.50, stdev=2878.63, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (usec) : 750=8.33% lat (msec) : 250=75.00%, 500=16.67% cpu : usr=0.04%, sys=46.48%, ctx=825, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185673: Mon Aug 17 01:45:41 2026 read: IOPS=0, BW=718KiB/s (736kB/s)(2048KiB/2851msec) clat (msec): min=94, max=428, avg=261.49, stdev=235.87 lat (msec): min=94, max=428, avg=261.49, stdev=235.87 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 95], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 95], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1818, max= 2039, per=26.85%, avg=1928.50, stdev=156.27, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3592KiB/s (3678kB/s)(10.0MiB/2851msec); 0 zone resets clat (msec): min=97, max=389, avg=221.28, stdev=113.37 lat (msec): min=97, max=389, avg=221.35, stdev=113.35 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 110], | 30.00th=[ 125], 40.00th=[ 150], 50.00th=[ 182], 60.00th=[ 190], | 70.00th=[ 236], 80.00th=[ 368], 90.00th=[ 368], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 2039, max= 6144, per=35.62%, avg=3581.75, stdev=1963.16, samples=4 iops : min= 1, max= 6, avg= 3.25, stdev= 2.22, samples=4 lat (msec) : 100=16.67%, 250=50.00%, 500=33.33% cpu : usr=0.00%, sys=46.95%, ctx=199, 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=185674: Mon Aug 17 01:45:41 2026 read: IOPS=2, BW=2580KiB/s (2642kB/s)(6144KiB/2381msec) clat (usec): min=429, max=230608, avg=90517.01, stdev=104268.16 lat (usec): min=430, max=230609, avg=90517.94, stdev=104268.01 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[ 660], | 30.00th=[ 660], 40.00th=[ 725], 50.00th=[ 725], 60.00th=[123208], | 70.00th=[187696], 80.00th=[187696], 90.00th=[229639], 95.00th=[229639], | 99.00th=[229639], 99.50th=[229639], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 4079, max= 6144, per=71.16%, avg=5111.50, stdev=1460.18, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2580KiB/s (2642kB/s)(6144KiB/2381msec); 0 zone resets clat (msec): min=130, max=709, avg=289.61, stdev=221.49 lat (msec): min=130, max=709, avg=289.70, stdev=221.47 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 182], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1802, max= 4096, per=24.82%, avg=2496.25, stdev=1072.57, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 250=58.33%, 500=8.33%, 750=8.33% cpu : usr=0.00%, sys=45.55%, ctx=348, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=185675: Mon Aug 17 01:45:41 2026 read: IOPS=2, BW=2233KiB/s (2286kB/s)(5120KiB/2293msec) clat (usec): min=409, max=227752, avg=45951.79, stdev=101629.64 lat (usec): min=410, max=227753, avg=45952.67, stdev=101630.04 clat percentiles (usec): | 1.00th=[ 408], 5.00th=[ 408], 10.00th=[ 408], 20.00th=[ 408], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 537], 60.00th=[ 537], | 70.00th=[ 553], 80.00th=[ 553], 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= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=3, BW=3126KiB/s (3201kB/s)(7168KiB/2293msec); 0 zone resets clat (msec): min=154, max=514, avg=281.18, stdev=130.47 lat (msec): min=154, max=515, avg=281.25, stdev=130.50 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 159], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 268], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 376], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 2039, max= 4096, per=33.91%, avg=3410.33, stdev=1187.61, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 lat (usec) : 500=8.33%, 750=25.00% lat (msec) : 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.09%, sys=46.64%, ctx=145, 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=7183KiB/s (7356kB/s), 718KiB/s-2916KiB/s (736kB/s-2986kB/s), io=20.0MiB (20.0MB), run=2293-2851msec WRITE: bw=9.82MiB/s (10.3MB/s), 2083KiB/s-3592KiB/s (2133kB/s-3678kB/s), io=28.0MiB (29.4MB), run=2293-2851msec 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=185682: Mon Aug 17 01:45:51 2026 read: IOPS=1, BW=5813KiB/s (5952kB/s)(12.0MiB/2114msec) clat (msec): min=276, max=1389, avg=696.74, stdev=604.78 lat (msec): min=276, max=1389, avg=696.74, stdev=604.78 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 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= 6177, max= 8192, per=100.00%, avg=7184.50, stdev=1424.82, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=35.02%, ctx=1990, 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=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=185684: Mon Aug 17 01:45:51 2026 read: IOPS=0, BW=1320KiB/s (1351kB/s)(4096KiB/3104msec) clat (nsec): min=2297.0M, max=2297.0M, avg=2297955060.00, stdev= 0.00 lat (nsec): min=2297.0M, max=2297.0M, avg=2297958050.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2299], 5.00th=[ 2299], 10.00th=[ 2299], 20.00th=[ 2299], | 30.00th=[ 2299], 40.00th=[ 2299], 50.00th=[ 2299], 60.00th=[ 2299], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2639KiB/s (2703kB/s)(8192KiB/3104msec); 0 zone resets clat (msec): min=287, max=409, avg=348.37, stdev=85.81 lat (msec): min=288, max=409, avg=348.73, stdev=85.71 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 8175, max= 8175, per=77.44%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=20.01%, ctx=985, 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=185686: Mon Aug 17 01:45:51 2026 write: IOPS=1, BW=4265KiB/s (4368kB/s)(12.0MiB/2881msec); 0 zone resets clat (msec): min=271, max=2222, avg=943.48, stdev=1107.83 lat (msec): min=272, max=2222, avg=943.97, stdev=1108.01 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.07%, sys=10.94%, ctx=102, 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=185688: Mon Aug 17 01:45:51 2026 write: IOPS=0, BW=4031KiB/s (4128kB/s)(12.0MiB/3048msec); 0 zone resets clat (msec): min=771, max=1367, avg=1002.81, stdev=319.25 lat (msec): min=772, max=1367, avg=1003.29, stdev=319.45 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8175, max= 8192, per=77.52%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.07%, sys=10.50%, ctx=83, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5278KiB/s (5405kB/s), 1320KiB/s-5813KiB/s (1351kB/s-5952kB/s), io=16.0MiB (16.8MB), run=2114-3104msec WRITE: bw=10.3MiB/s (10.8MB/s), 2639KiB/s-4265KiB/s (2703kB/s-4368kB/s), io=32.0MiB (33.6MB), run=2881-3104msec rand-rw: (groupid=0, jobs=1): err= 0: pid=185683: Mon Aug 17 01:45:51 2026 read: IOPS=0, BW=3729KiB/s (3819kB/s)(12.0MiB/3295msec) clat (msec): min=292, max=2358, avg=1088.25, stdev=1111.46 lat (msec): min=292, max=2358, avg=1088.26, stdev=1111.46 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=8.01%, ctx=104, 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=185685: Mon Aug 17 01:45:51 2026 read: IOPS=0, BW=1239KiB/s (1269kB/s)(4096KiB/3306msec) clat (nsec): min=2426.3M, max=2426.3M, avg=2426335131.00, stdev= 0.00 lat (nsec): min=2426.3M, max=2426.3M, avg=2426337128.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2433], 5.00th=[ 2433], 10.00th=[ 2433], 20.00th=[ 2433], | 30.00th=[ 2433], 40.00th=[ 2433], 50.00th=[ 2433], 60.00th=[ 2433], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2478KiB/s (2537kB/s)(8192KiB/3306msec); 0 zone resets clat (msec): min=288, max=451, avg=370.08, stdev=114.85 lat (msec): min=289, max=451, avg=370.44, stdev=114.85 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 8175, max= 8175, per=84.68%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.03%, sys=8.14%, ctx=89, 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=185687: Mon Aug 17 01:45:51 2026 write: IOPS=0, BW=3621KiB/s (3707kB/s)(12.0MiB/3394msec); 0 zone resets clat (msec): min=225, max=2658, avg=1080.51, stdev=1368.32 lat (msec): min=225, max=2659, avg=1080.79, stdev=1368.37 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 8175, max= 8175, per=84.68%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=10.11%, ctx=86, 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=185689: Mon Aug 17 01:45:51 2026 write: IOPS=0, BW=3793KiB/s (3884kB/s)(12.0MiB/3240msec); 0 zone resets clat (msec): min=369, max=2263, avg=1029.28, stdev=1069.91 lat (msec): min=369, max=2264, avg=1029.72, stdev=1069.98 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 2265], 80.00th=[ 2265], 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= 8175, max= 8175, per=84.68%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.03%, sys=11.24%, ctx=116, 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=4956KiB/s (5075kB/s), 1239KiB/s-3729KiB/s (1269kB/s-3819kB/s), io=16.0MiB (16.8MB), run=3295-3306msec WRITE: bw=9655KiB/s (9886kB/s), 2478KiB/s-3793KiB/s (2537kB/s-3884kB/s), io=32.0MiB (33.6MB), run=3240-3394msec