== sanity test 398b: DIO and buffer IO race ============== 06:02:57 (1788516177) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.57091 s, 7.7 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=179428: Fri Sep 4 06:05:27 2026 read: IOPS=11, BW=46.6KiB/s (47.7kB/s)(5992KiB/128684msec) clat (usec): min=46, max=868394, avg=47518.22, stdev=37271.81 lat (usec): min=47, max=868396, avg=47519.66, stdev=37271.84 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 12125], 10.00th=[ 17957], 20.00th=[ 23725], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 47449], | 70.00th=[ 55837], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[104334], | 99.00th=[158335], 99.50th=[173016], 99.90th=[256902], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 111, per=24.98%, avg=46.22, stdev=19.08, samples=253 iops : min= 1, max= 27, avg=10.89, stdev= 4.77, samples=253 write: IOPS=12, BW=48.9KiB/s (50.1kB/s)(6296KiB/128684msec); 0 zone resets clat (usec): min=780, max=214713, avg=36431.17, stdev=36997.43 lat (usec): min=781, max=214715, avg=36435.34, stdev=36996.15 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1352], 10.00th=[ 1631], 20.00th=[ 3687], | 30.00th=[ 7832], 40.00th=[ 17171], 50.00th=[ 26346], 60.00th=[ 36963], | 70.00th=[ 46924], 80.00th=[ 62653], 90.00th=[ 86508], 95.00th=[109577], | 99.00th=[166724], 99.50th=[177210], 99.90th=[210764], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 7, max= 119, per=25.03%, avg=48.57, stdev=21.81, samples=253 iops : min= 1, max= 29, avg=11.48, stdev= 5.51, samples=253 lat (usec) : 50=0.13%, 100=1.46%, 250=0.16%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.33% lat (msec) : 2=6.09%, 4=4.49%, 10=6.28%, 20=8.95%, 50=40.17% lat (msec) : 100=25.26%, 250=6.51%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.80%, ctx=6503, 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=179429: Fri Sep 4 06:05:27 2026 read: IOPS=11, BW=46.9KiB/s (48.0kB/s)(5940KiB/126589msec) clat (usec): min=47, max=885084, avg=46994.15, stdev=36292.70 lat (usec): min=47, max=885087, avg=47002.75, stdev=36293.26 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 12387], 10.00th=[ 17695], 20.00th=[ 23987], | 30.00th=[ 29754], 40.00th=[ 35390], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 54789], 80.00th=[ 64750], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[152044], 99.50th=[179307], 99.90th=[235930], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 7, max= 103, per=25.31%, avg=46.83, stdev=17.59, samples=248 iops : min= 1, max= 25, avg=11.04, stdev= 4.43, samples=248 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(6348KiB/126589msec); 0 zone resets clat (usec): min=806, max=384614, avg=35669.82, stdev=37593.75 lat (usec): min=807, max=384615, avg=35671.78, stdev=37594.43 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1401], 10.00th=[ 1844], 20.00th=[ 4080], | 30.00th=[ 7701], 40.00th=[ 16319], 50.00th=[ 25035], 60.00th=[ 34341], | 70.00th=[ 46924], 80.00th=[ 62653], 90.00th=[ 84411], 95.00th=[104334], | 99.00th=[154141], 99.50th=[181404], 99.90th=[308282], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 7, max= 111, per=25.83%, avg=50.10, stdev=21.28, samples=248 iops : min= 1, max= 27, avg=11.87, stdev= 5.34, samples=248 lat (usec) : 50=0.13%, 100=1.37%, 250=0.10%, 500=0.10%, 1000=0.20% lat (msec) : 2=5.47%, 4=4.56%, 10=7.49%, 20=9.93%, 50=38.48% lat (msec) : 100=27.08%, 250=4.98%, 500=0.10%, 1000=0.03% cpu : usr=0.08%, sys=4.88%, ctx=6515, 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=179430: Fri Sep 4 06:05:27 2026 read: IOPS=11, BW=46.9KiB/s (48.0kB/s)(6028KiB/128485msec) clat (usec): min=30, max=255173, avg=46707.45, stdev=31945.24 lat (usec): min=31, max=255175, avg=46709.81, stdev=31945.42 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 10028], 10.00th=[ 17171], 20.00th=[ 22938], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 55313], 80.00th=[ 65274], 90.00th=[ 82314], 95.00th=[103285], | 99.00th=[168821], 99.50th=[198181], 99.90th=[244319], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 15, max= 103, per=25.38%, avg=46.96, stdev=19.26, samples=251 iops : min= 3, max= 25, avg=11.08, stdev= 4.84, samples=251 write: IOPS=12, BW=48.7KiB/s (49.9kB/s)(6260KiB/128485msec); 0 zone resets clat (usec): min=826, max=913027, avg=36969.80, stdev=44291.83 lat (usec): min=827, max=913029, avg=36985.28, stdev=44286.43 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1713], 20.00th=[ 4178], | 30.00th=[ 7635], 40.00th=[ 16581], 50.00th=[ 26084], 60.00th=[ 34341], | 70.00th=[ 45876], 80.00th=[ 64226], 90.00th=[ 87557], 95.00th=[108528], | 99.00th=[177210], 99.50th=[217056], 99.90th=[325059], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 118, per=25.05%, avg=48.60, stdev=21.59, samples=252 iops : min= 1, max= 29, avg=11.48, stdev= 5.43, samples=252 lat (usec) : 50=0.42%, 100=1.79%, 250=0.03%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.89%, 4=3.65%, 10=7.58%, 20=9.31%, 50=39.00% lat (msec) : 100=25.62%, 250=6.38%, 500=0.07%, 1000=0.03% cpu : usr=0.06%, sys=4.84%, ctx=6506, 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=179431: Fri Sep 4 06:05:27 2026 read: IOPS=11, BW=46.9KiB/s (47.0kB/s)(6052KiB/129167msec) clat (usec): min=35, max=320209, avg=46661.71, stdev=33292.85 lat (usec): min=36, max=320229, avg=46663.53, stdev=33293.06 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 310], 10.00th=[ 16188], 20.00th=[ 22938], | 30.00th=[ 28443], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 54264], 80.00th=[ 66323], 90.00th=[ 84411], 95.00th=[102237], | 99.00th=[170918], 99.50th=[214959], 99.90th=[316670], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 126, per=25.19%, avg=46.61, stdev=19.90, samples=253 iops : min= 1, max= 31, avg=10.98, stdev= 5.02, samples=253 write: IOPS=12, BW=48.3KiB/s (49.4kB/s)(6236KiB/129167msec); 0 zone resets clat (usec): min=827, max=912872, avg=37441.85, stdev=43058.96 lat (usec): min=829, max=912943, avg=37445.19, stdev=43060.80 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1401], 10.00th=[ 1811], 20.00th=[ 4293], | 30.00th=[ 8717], 40.00th=[ 17695], 50.00th=[ 26346], 60.00th=[ 36963], | 70.00th=[ 49546], 80.00th=[ 63701], 90.00th=[ 88605], 95.00th=[111674], | 99.00th=[158335], 99.50th=[183501], 99.90th=[240124], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 119, per=24.70%, avg=47.92, stdev=21.58, samples=253 iops : min= 1, max= 29, avg=11.32, stdev= 5.43, samples=253 lat (usec) : 50=0.36%, 100=1.99%, 250=0.07%, 500=0.07%, 1000=0.29% lat (msec) : 2=5.27%, 4=4.10%, 10=6.93%, 20=9.83%, 50=38.70% lat (msec) : 100=26.07%, 250=6.18%, 500=0.10%, 1000=0.03% cpu : usr=0.08%, sys=4.94%, ctx=6694, 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=186KiB/s (190kB/s), 46.6KiB/s-46.9KiB/s (47.7kB/s-48.0kB/s), io=23.4MiB (24.6MB), run=126589-129167msec WRITE: bw=195KiB/s (199kB/s), 48.3KiB/s-50.1KiB/s (49.4kB/s-51.3kB/s), io=24.6MiB (25.7MB), run=126589-129167msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179423: Fri Sep 4 06:06:05 2026 read: IOPS=8, BW=35.6KiB/s (36.5kB/s)(5992KiB/168160msec) clat (msec): min=5, max=1225, avg=44.35, stdev=51.11 lat (msec): min=5, max=1225, avg=44.35, stdev=51.11 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 47], 80.00th=[ 65], 90.00th=[ 99], 95.00th=[ 125], | 99.00th=[ 203], 99.50th=[ 234], 99.90th=[ 405], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 160, per=25.42%, avg=36.10, stdev=26.42, samples=323 iops : min= 1, max= 40, avg= 8.37, stdev= 6.66, samples=323 write: IOPS=9, BW=37.4KiB/s (38.3kB/s)(6296KiB/168160msec); 0 zone resets clat (msec): min=10, max=320, avg=64.35, stdev=46.99 lat (msec): min=10, max=320, avg=64.35, stdev=46.98 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 77], 80.00th=[ 95], 90.00th=[ 124], 95.00th=[ 159], | 99.00th=[ 249], 99.50th=[ 275], 99.90th=[ 309], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 7, max= 135, per=25.36%, avg=37.78, stdev=24.86, samples=324 iops : min= 1, max= 33, avg= 8.79, stdev= 6.27, samples=324 lat (msec) : 10=2.60%, 20=14.65%, 50=45.51%, 100=23.70%, 250=12.89% lat (msec) : 500=0.62%, 2000=0.03% cpu : usr=0.05%, sys=2.01%, ctx=4981, 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=179424: Fri Sep 4 06:06:05 2026 read: IOPS=8, BW=35.4KiB/s (36.2kB/s)(5940KiB/167998msec) clat (msec): min=5, max=1274, avg=44.01, stdev=52.55 lat (msec): min=5, max=1274, avg=44.02, stdev=52.55 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 64], 90.00th=[ 99], 95.00th=[ 133], | 99.00th=[ 205], 99.50th=[ 230], 99.90th=[ 397], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 158, per=25.46%, avg=36.15, stdev=26.29, samples=318 iops : min= 1, max= 39, avg= 8.39, stdev= 6.63, samples=318 write: IOPS=9, BW=37.8KiB/s (38.7kB/s)(6348KiB/167998msec); 0 zone resets clat (msec): min=9, max=424, avg=64.40, stdev=45.93 lat (msec): min=9, max=424, avg=64.41, stdev=45.93 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 75], 80.00th=[ 92], 90.00th=[ 130], 95.00th=[ 157], | 99.00th=[ 218], 99.50th=[ 259], 99.90th=[ 334], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 135, per=25.36%, avg=37.79, stdev=25.02, samples=325 iops : min= 1, max= 33, avg= 8.79, stdev= 6.31, samples=325 lat (msec) : 10=2.80%, 20=16.11%, 50=42.74%, 100=24.54%, 250=13.38% lat (msec) : 500=0.39%, 2000=0.03% cpu : usr=0.05%, sys=1.93%, ctx=4858, 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=179425: Fri Sep 4 06:06:05 2026 read: IOPS=8, BW=35.8KiB/s (36.7kB/s)(6028KiB/168346msec) clat (msec): min=5, max=418, avg=42.76, stdev=41.60 lat (msec): min=5, max=418, avg=42.76, stdev=41.60 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 61], 90.00th=[ 100], 95.00th=[ 131], | 99.00th=[ 199], 99.50th=[ 232], 99.90th=[ 300], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 128, per=25.60%, avg=36.35, stdev=25.28, samples=321 iops : min= 1, max= 32, avg= 8.43, stdev= 6.38, samples=321 write: IOPS=9, BW=37.2KiB/s (38.1kB/s)(6260KiB/168346msec); 0 zone resets clat (msec): min=9, max=1301, avg=66.09, stdev=57.58 lat (msec): min=9, max=1301, avg=66.09, stdev=57.58 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 49], 60.00th=[ 60], | 70.00th=[ 78], 80.00th=[ 97], 90.00th=[ 130], 95.00th=[ 161], | 99.00th=[ 253], 99.50th=[ 296], 99.90th=[ 363], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 119, per=24.98%, avg=37.22, stdev=25.13, samples=325 iops : min= 1, max= 29, avg= 8.65, stdev= 6.34, samples=325 lat (msec) : 10=2.54%, 20=16.50%, 50=43.91%, 100=22.43%, 250=13.93% lat (msec) : 500=0.65%, 2000=0.03% cpu : usr=0.06%, sys=1.99%, ctx=4900, 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=179426: Fri Sep 4 06:06:05 2026 read: IOPS=9, BW=36.0KiB/s (36.9kB/s)(6052KiB/167953msec) clat (msec): min=5, max=263, avg=43.32, stdev=39.02 lat (msec): min=5, max=263, avg=43.32, stdev=39.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 36], | 70.00th=[ 47], 80.00th=[ 67], 90.00th=[ 101], 95.00th=[ 125], | 99.00th=[ 188], 99.50th=[ 203], 99.90th=[ 228], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 7, max= 135, per=26.18%, avg=37.17, stdev=26.68, samples=316 iops : min= 1, max= 33, avg= 8.64, stdev= 6.72, samples=316 write: IOPS=9, BW=37.1KiB/s (38.0kB/s)(6236KiB/167953msec); 0 zone resets clat (msec): min=9, max=1300, avg=65.40, stdev=57.02 lat (msec): min=9, max=1300, avg=65.40, stdev=57.03 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 73], 80.00th=[ 96], 90.00th=[ 131], 95.00th=[ 161], | 99.00th=[ 247], 99.50th=[ 275], 99.90th=[ 418], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 136, per=24.71%, avg=36.81, stdev=24.44, samples=328 iops : min= 1, max= 34, avg= 8.54, stdev= 6.16, samples=328 lat (msec) : 10=2.08%, 20=17.29%, 50=42.45%, 100=23.96%, 250=13.74% lat (msec) : 500=0.46%, 2000=0.03% cpu : usr=0.07%, sys=1.98%, ctx=4936, 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=143KiB/s (146kB/s), 35.4KiB/s-36.0KiB/s (36.2kB/s-36.9kB/s), io=23.4MiB (24.6MB), run=167953-168346msec WRITE: bw=149KiB/s (153kB/s), 37.1KiB/s-37.8KiB/s (38.0kB/s-38.7kB/s), io=24.6MiB (25.7MB), run=167953-168346msec 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=179469: Fri Sep 4 06:06:48 2026 read: IOPS=11, BW=184KiB/s (188kB/s)(5920KiB/32235msec) clat (usec): min=31, max=253661, avg=43569.75, stdev=31348.28 lat (usec): min=31, max=253662, avg=43572.49, stdev=31350.65 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 19268], | 30.00th=[ 28705], 40.00th=[ 33162], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 54264], 80.00th=[ 64226], 90.00th=[ 84411], 95.00th=[ 98042], | 99.00th=[131597], 99.50th=[139461], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 479, per=24.57%, avg=182.56, stdev=76.27, samples=63 iops : min= 1, max= 29, avg=10.67, stdev= 4.71, samples=63 write: IOPS=12, BW=198KiB/s (202kB/s)(6368KiB/32235msec); 0 zone resets clat (usec): min=1041, max=208612, avg=39218.46, stdev=38900.49 lat (usec): min=1043, max=208616, avg=39225.22, stdev=38897.61 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1942], 10.00th=[ 2769], 20.00th=[ 5211], | 30.00th=[ 9896], 40.00th=[ 19006], 50.00th=[ 29230], 60.00th=[ 41681], | 70.00th=[ 52691], 80.00th=[ 63177], 90.00th=[ 86508], 95.00th=[115868], | 99.00th=[183501], 99.50th=[204473], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 510, per=25.66%, avg=200.42, stdev=84.71, samples=62 iops : min= 1, max= 31, avg=11.79, stdev= 5.38, samples=62 lat (usec) : 50=1.30%, 100=4.82%, 250=0.13%, 500=0.26% lat (msec) : 2=2.99%, 4=5.99%, 10=7.03%, 20=8.59%, 50=34.77% lat (msec) : 100=27.99%, 250=5.99%, 500=0.13% cpu : usr=0.08%, sys=4.94%, ctx=1610, 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=179470: Fri Sep 4 06:06:48 2026 read: IOPS=11, BW=184KiB/s (188kB/s)(5744KiB/31205msec) clat (usec): min=43, max=245708, avg=48688.11, stdev=34388.01 lat (usec): min=44, max=245709, avg=48689.29, stdev=34388.03 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 17171], 20.00th=[ 24249], | 30.00th=[ 30540], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 57410], 80.00th=[ 69731], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[181404], 99.50th=[223347], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 32, max= 479, per=24.75%, avg=183.92, stdev=82.30, samples=61 iops : min= 2, max= 29, avg=10.75, stdev= 5.20, samples=61 write: IOPS=13, BW=210KiB/s (215kB/s)(6544KiB/31205msec); 0 zone resets clat (usec): min=1072, max=315710, avg=32965.89, stdev=35347.73 lat (usec): min=1074, max=315713, avg=32974.71, stdev=35347.02 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2147], 10.00th=[ 3163], 20.00th=[ 5997], | 30.00th=[ 9110], 40.00th=[ 15139], 50.00th=[ 22152], 60.00th=[ 29754], | 70.00th=[ 41157], 80.00th=[ 54789], 90.00th=[ 77071], 95.00th=[105382], | 99.00th=[147850], 99.50th=[166724], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 31, max= 446, per=26.74%, avg=208.82, stdev=97.73, samples=61 iops : min= 1, max= 27, avg=12.34, stdev= 6.12, samples=61 lat (usec) : 50=0.13%, 100=3.12%, 250=0.52%, 750=0.13% lat (msec) : 2=2.08%, 4=4.69%, 10=10.55%, 20=10.55%, 50=38.54% lat (msec) : 100=23.44%, 250=6.12%, 500=0.13% cpu : usr=0.07%, sys=5.24%, ctx=1631, 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=179472: Fri Sep 4 06:06:48 2026 read: IOPS=12, BW=195KiB/s (200kB/s)(6256KiB/32013msec) clat (usec): min=34, max=269772, avg=47416.16, stdev=33615.57 lat (usec): min=34, max=269774, avg=47417.56, stdev=33615.61 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 62], 10.00th=[ 627], 20.00th=[ 23462], | 30.00th=[ 30802], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 50070], | 70.00th=[ 56361], 80.00th=[ 66323], 90.00th=[ 87557], 95.00th=[107480], | 99.00th=[185598], 99.50th=[208667], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 30, max= 415, per=26.87%, avg=199.61, stdev=84.81, samples=62 iops : min= 1, max= 25, avg=11.73, stdev= 5.31, samples=62 write: IOPS=11, BW=188KiB/s (193kB/s)(6032KiB/32013msec); 0 zone resets clat (usec): min=1319, max=221037, avg=34209.69, stdev=33009.23 lat (usec): min=1321, max=221039, avg=34213.59, stdev=33009.31 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1926], 10.00th=[ 2900], 20.00th=[ 5473], | 30.00th=[ 8586], 40.00th=[ 16188], 50.00th=[ 26870], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 55837], 90.00th=[ 73925], 95.00th=[100140], | 99.00th=[147850], 99.50th=[185598], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 63, max= 447, per=24.48%, avg=191.19, stdev=91.60, samples=62 iops : min= 3, max= 27, avg=11.21, stdev= 5.75, samples=62 lat (usec) : 50=0.91%, 100=4.04%, 250=0.13%, 750=0.13% lat (msec) : 2=3.12%, 4=4.17%, 10=8.98%, 20=6.77%, 50=37.76% lat (msec) : 100=28.26%, 250=5.60%, 500=0.13% cpu : usr=0.08%, sys=5.23%, ctx=1631, 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=179473: Fri Sep 4 06:06:48 2026 read: IOPS=12, BW=193KiB/s (198kB/s)(6032KiB/31258msec) clat (usec): min=42, max=241534, avg=44990.48, stdev=34130.71 lat (usec): min=42, max=241535, avg=44991.72, stdev=34130.92 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 62], 10.00th=[ 78], 20.00th=[ 22676], | 30.00th=[ 29230], 40.00th=[ 34341], 50.00th=[ 39060], 60.00th=[ 45351], | 70.00th=[ 53740], 80.00th=[ 63701], 90.00th=[ 82314], 95.00th=[106431], | 99.00th=[183501], 99.50th=[233833], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 27, max= 414, per=25.86%, avg=192.16, stdev=82.34, samples=61 iops : min= 1, max= 25, avg=11.28, stdev= 5.17, samples=61 write: IOPS=12, BW=200KiB/s (205kB/s)(6256KiB/31258msec); 0 zone resets clat (usec): min=1100, max=214731, avg=36362.93, stdev=38547.99 lat (usec): min=1102, max=214733, avg=36366.77, stdev=38546.58 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1876], 10.00th=[ 2507], 20.00th=[ 4817], | 30.00th=[ 8225], 40.00th=[ 14222], 50.00th=[ 22938], 60.00th=[ 34341], | 70.00th=[ 46400], 80.00th=[ 62653], 90.00th=[ 88605], 95.00th=[116917], | 99.00th=[158335], 99.50th=[214959], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 573, per=25.66%, avg=200.44, stdev=101.95, samples=61 iops : min= 1, max= 35, avg=11.79, stdev= 6.41, samples=61 lat (usec) : 50=0.39%, 100=4.95%, 250=0.26%, 500=0.13% lat (msec) : 2=3.78%, 4=5.08%, 10=7.81%, 20=9.90%, 50=37.11% lat (msec) : 100=23.18%, 250=7.42% cpu : usr=0.06%, sys=5.11%, ctx=1566, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=743KiB/s (761kB/s), 184KiB/s-195KiB/s (188kB/s-200kB/s), io=23.4MiB (24.5MB), run=31205-32235msec WRITE: bw=782KiB/s (801kB/s), 188KiB/s-210KiB/s (193kB/s-215kB/s), io=24.6MiB (25.8MB), run=31205-32235msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179474: Fri Sep 4 06:06:58 2026 read: IOPS=8, BW=139KiB/s (143kB/s)(5920KiB/42492msec) clat (msec): min=7, max=256, avg=42.66, stdev=41.09 lat (msec): min=7, max=256, avg=42.67, stdev=41.08 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 42], 80.00th=[ 62], 90.00th=[ 96], 95.00th=[ 127], | 99.00th=[ 207], 99.50th=[ 215], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 498, per=24.87%, avg=139.79, stdev=102.57, samples=81 iops : min= 1, max= 31, avg= 7.98, stdev= 6.46, samples=81 write: IOPS=9, BW=150KiB/s (153kB/s)(6368KiB/42492msec); 0 zone resets clat (msec): min=14, max=257, avg=66.73, stdev=48.58 lat (msec): min=14, max=257, avg=66.73, stdev=48.57 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 62], | 70.00th=[ 79], 80.00th=[ 102], 90.00th=[ 142], 95.00th=[ 169], | 99.00th=[ 251], 99.50th=[ 257], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 27, max= 443, per=25.19%, avg=148.84, stdev=102.50, samples=83 iops : min= 1, max= 27, avg= 8.53, stdev= 6.48, samples=83 lat (msec) : 10=1.30%, 20=16.28%, 50=44.92%, 100=22.53%, 250=14.32% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=2.04%, ctx=1238, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179475: Fri Sep 4 06:06:58 2026 read: IOPS=8, BW=135KiB/s (138kB/s)(5744KiB/42608msec) clat (msec): min=6, max=265, avg=42.51, stdev=40.75 lat (msec): min=6, max=265, avg=42.51, stdev=40.75 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 95], 95.00th=[ 136], | 99.00th=[ 186], 99.50th=[ 224], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 31, max= 447, per=25.41%, avg=142.81, stdev=104.82, samples=79 iops : min= 1, max= 27, avg= 8.13, stdev= 6.62, samples=79 write: IOPS=9, BW=154KiB/s (157kB/s)(6544KiB/42608msec); 0 zone resets clat (msec): min=11, max=339, avg=65.46, stdev=47.72 lat (msec): min=11, max=339, avg=65.47, stdev=47.72 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 78], 80.00th=[ 103], 90.00th=[ 132], 95.00th=[ 161], | 99.00th=[ 234], 99.50th=[ 243], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 480, per=26.55%, avg=156.91, stdev=105.88, samples=82 iops : min= 1, max= 30, avg= 9.04, stdev= 6.70, samples=82 lat (msec) : 10=2.60%, 20=15.76%, 50=44.27%, 100=21.74%, 250=15.23% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.96%, ctx=1255, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179476: Fri Sep 4 06:06:58 2026 read: IOPS=9, BW=148KiB/s (151kB/s)(6256KiB/42384msec) clat (msec): min=6, max=380, avg=41.82, stdev=41.95 lat (msec): min=6, max=380, avg=41.82, stdev=41.95 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 40], 80.00th=[ 57], 90.00th=[ 85], 95.00th=[ 125], | 99.00th=[ 197], 99.50th=[ 247], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 31, max= 572, per=27.33%, avg=153.60, stdev=123.99, samples=80 iops : min= 1, max= 35, avg= 8.83, stdev= 7.79, samples=80 write: IOPS=8, BW=142KiB/s (146kB/s)(6032KiB/42384msec); 0 zone resets clat (msec): min=10, max=261, avg=68.15, stdev=50.29 lat (msec): min=10, max=261, avg=68.15, stdev=50.29 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 41], 50.00th=[ 53], 60.00th=[ 67], | 70.00th=[ 84], 80.00th=[ 103], 90.00th=[ 142], 95.00th=[ 178], | 99.00th=[ 243], 99.50th=[ 257], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 512, per=24.27%, avg=143.42, stdev=94.00, samples=81 iops : min= 1, max= 32, avg= 8.20, stdev= 5.96, samples=81 lat (msec) : 10=1.04%, 20=17.32%, 50=44.27%, 100=22.92%, 250=13.93% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.90%, ctx=1241, 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=179477: Fri Sep 4 06:06:58 2026 read: IOPS=8, BW=143KiB/s (146kB/s)(6032KiB/42246msec) clat (msec): min=6, max=371, avg=46.34, stdev=45.73 lat (msec): min=6, max=371, avg=46.35, stdev=45.73 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 68], 90.00th=[ 97], 95.00th=[ 148], | 99.00th=[ 249], 99.50th=[ 296], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 31, max= 442, per=26.09%, avg=146.60, stdev=98.60, samples=80 iops : min= 1, max= 27, avg= 8.39, stdev= 6.24, samples=80 write: IOPS=9, BW=148KiB/s (152kB/s)(6256KiB/42246msec); 0 zone resets clat (msec): min=15, max=255, avg=61.86, stdev=42.81 lat (msec): min=15, max=255, avg=61.88, stdev=42.81 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 36], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 95], 90.00th=[ 121], 95.00th=[ 146], | 99.00th=[ 230], 99.50th=[ 253], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 31, max= 435, per=25.28%, avg=149.40, stdev=102.97, samples=82 iops : min= 1, max= 27, avg= 8.57, stdev= 6.51, samples=82 lat (msec) : 10=1.04%, 20=16.28%, 50=44.66%, 100=24.61%, 250=12.76% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=2.04%, ctx=1169, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=562KiB/s (576kB/s), 135KiB/s-148KiB/s (138kB/s-151kB/s), io=23.4MiB (24.5MB), run=42246-42608msec WRITE: bw=591KiB/s (606kB/s), 142KiB/s-154KiB/s (146kB/s-157kB/s), io=24.6MiB (25.8MB), run=42246-42608msec 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=179494: Fri Sep 4 06:07:15 2026 read: IOPS=1, BW=1397KiB/s (1431kB/s)(7168KiB/5131msec) clat (usec): min=619, max=2500.5k, avg=554936.02, stdev=865127.75 lat (usec): min=620, max=2500.5k, avg=554937.33, stdev=865128.10 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], | 20.00th=[ 210764], 30.00th=[ 238027], 40.00th=[ 238027], | 50.00th=[ 283116], 60.00th=[ 325059], 70.00th=[ 325059], | 80.00th=[ 329253], 90.00th=[2499806], 95.00th=[2499806], | 99.00th=[2499806], 99.50th=[2499806], 99.90th=[2499806], | 99.95th=[2499806], 99.99th=[2499806] bw ( KiB/s): min= 2011, max= 4055, per=91.47%, avg=3020.25, stdev=1163.29, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=998KiB/s (1022kB/s)(5120KiB/5131msec); 0 zone resets clat (msec): min=168, max=311, avg=248.69, stdev=59.97 lat (msec): min=169, max=311, avg=249.02, stdev=59.83 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 313], 95.00th=[ 313], | 99.00th=[ 313], 99.50th=[ 313], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 2000, max= 4096, per=58.45%, avg=2702.33, stdev=1206.96, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=41.67%, >=2000=8.33% cpu : usr=0.06%, sys=9.76%, ctx=564, 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=179495: Fri Sep 4 06:07:15 2026 read: IOPS=0, BW=348KiB/s (357kB/s)(2048KiB/5880msec) clat (usec): min=1978, max=789648, avg=395813.36, stdev=556966.51 lat (usec): min=1980, max=789649, avg=395815.05, stdev=556966.57 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 1975], 10.00th=[ 1975], 20.00th=[ 1975], | 30.00th=[ 1975], 40.00th=[ 1975], 50.00th=[ 1975], 60.00th=[792724], | 70.00th=[792724], 80.00th=[792724], 90.00th=[792724], 95.00th=[792724], | 99.00th=[792724], 99.50th=[792724], 99.90th=[792724], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 2048, max= 2048, per=62.02%, avg=2048.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1741KiB/s (1783kB/s)(10.0MiB/5880msec); 0 zone resets clat (msec): min=71, max=2077, avg=508.54, stdev=628.10 lat (msec): min=71, max=2077, avg=508.72, stdev=628.09 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 99], | 30.00th=[ 128], 40.00th=[ 169], 50.00th=[ 230], 60.00th=[ 266], | 70.00th=[ 284], 80.00th=[ 869], 90.00th=[ 902], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 2048, max= 5763, per=85.50%, avg=3952.75, stdev=1517.62, samples=4 iops : min= 2, max= 5, avg= 3.25, stdev= 1.26, samples=4 lat (msec) : 2=8.33%, 100=16.67%, 250=25.00%, 500=16.67%, 1000=25.00% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=6.89%, ctx=176, 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=179496: Fri Sep 4 06:07:15 2026 read: IOPS=0, BW=991KiB/s (1014kB/s)(6144KiB/6202msec) clat (usec): min=971, max=355579, avg=150962.10, stdev=135045.17 lat (usec): min=972, max=355580, avg=150963.42, stdev=135045.14 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 971], 10.00th=[ 971], 20.00th=[ 1057], | 30.00th=[ 1057], 40.00th=[162530], 50.00th=[162530], 60.00th=[173016], | 70.00th=[212861], 80.00th=[212861], 90.00th=[354419], 95.00th=[354419], | 99.00th=[354419], 99.50th=[354419], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 2027, max= 3842, per=75.45%, avg=2491.25, stdev=900.55, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=0, BW=991KiB/s (1014kB/s)(6144KiB/6202msec); 0 zone resets clat (msec): min=191, max=3163, avg=881.83, stdev=1142.06 lat (msec): min=191, max=3163, avg=882.22, stdev=1141.98 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 409], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 3171], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 1921, max= 4096, per=52.03%, avg=2405.40, stdev=946.70, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=6.87%, ctx=176, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179497: Fri Sep 4 06:07:15 2026 read: IOPS=0, BW=919KiB/s (941kB/s)(5120KiB/5572msec) clat (usec): min=556, max=417238, avg=190580.49, stdev=185650.50 lat (usec): min=557, max=417240, avg=190581.60, stdev=185650.76 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 553], | 30.00th=[ 578], 40.00th=[ 578], 50.00th=[231736], 60.00th=[231736], | 70.00th=[304088], 80.00th=[304088], 90.00th=[417334], 95.00th=[417334], | 99.00th=[417334], 99.50th=[417334], 99.90th=[417334], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 2035, max= 4007, per=81.58%, avg=2693.67, stdev=1137.38, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1286KiB/s (1317kB/s)(7168KiB/5572msec); 0 zone resets clat (msec): min=165, max=3215, avg=659.54, stdev=1127.55 lat (msec): min=165, max=3215, avg=659.69, stdev=1127.51 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 203], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 257], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 264], 90.00th=[ 3205], 95.00th=[ 3205], | 99.00th=[ 3205], 99.50th=[ 3205], 99.90th=[ 3205], 99.95th=[ 3205], | 99.99th=[ 3205] bw ( KiB/s): min= 1385, max= 4039, per=51.17%, avg=2365.50, stdev=1155.08, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 250=25.00%, 500=50.00%, >=2000=8.33% cpu : usr=0.00%, sys=7.83%, ctx=180, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3302KiB/s (3381kB/s), 348KiB/s-1397KiB/s (357kB/s-1431kB/s), io=20.0MiB (20.0MB), run=5131-6202msec WRITE: bw=4623KiB/s (4734kB/s), 991KiB/s-1741KiB/s (1014kB/s-1783kB/s), io=28.0MiB (29.4MB), run=5131-6202msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179489: Fri Sep 4 06:07:16 2026 read: IOPS=1, BW=1482KiB/s (1518kB/s)(7168KiB/4836msec) clat (msec): min=88, max=2546, avg=533.66, stdev=893.40 lat (msec): min=88, max=2546, avg=533.66, stdev=893.40 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 114], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 205], 60.00th=[ 215], | 70.00th=[ 215], 80.00th=[ 401], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 1984, max= 3908, per=90.82%, avg=2635.67, stdev=1101.98, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1059KiB/s (1084kB/s)(5120KiB/4836msec); 0 zone resets clat (msec): min=116, max=420, avg=205.04, stdev=123.28 lat (msec): min=116, max=420, avg=205.17, stdev=123.26 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 159], 60.00th=[ 159], | 70.00th=[ 188], 80.00th=[ 188], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 1302, max= 4047, per=60.15%, avg=2444.33, stdev=1429.23, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=66.67%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.19%, ctx=87, 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=179490: Fri Sep 4 06:07:16 2026 read: IOPS=0, BW=290KiB/s (297kB/s)(2048KiB/7055msec) clat (msec): min=110, max=376, avg=243.07, stdev=188.13 lat (msec): min=110, max=376, avg=243.07, stdev=188.13 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 110], | 30.00th=[ 110], 40.00th=[ 110], 50.00th=[ 110], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 1835, max= 1935, per=64.96%, avg=1885.00, stdev=70.71, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1451KiB/s (1486kB/s)(10.0MiB/7055msec); 0 zone resets clat (msec): min=109, max=2747, avg=653.36, stdev=822.00 lat (msec): min=109, max=2747, avg=653.48, stdev=821.98 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 153], | 30.00th=[ 211], 40.00th=[ 259], 50.00th=[ 264], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 1083], 90.00th=[ 1116], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 1835, max= 2039, per=48.21%, avg=1959.43, stdev=75.50, samples=7 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=7 lat (msec) : 250=33.33%, 500=41.67%, 2000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=3.16%, ctx=71, 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=179491: Fri Sep 4 06:07:16 2026 read: IOPS=0, BW=943KiB/s (965kB/s)(6144KiB/6517msec) clat (msec): min=125, max=679, avg=296.10, stdev=211.11 lat (msec): min=125, max=679, avg=296.10, stdev=211.11 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 127], | 30.00th=[ 127], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 330], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1992, max= 4063, per=86.72%, avg=2516.50, stdev=1031.08, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=943KiB/s (965kB/s)(6144KiB/6517msec); 0 zone resets clat (msec): min=183, max=2664, avg=770.19, stdev=951.40 lat (msec): min=183, max=2664, avg=770.28, stdev=951.42 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 502], | 70.00th=[ 751], 80.00th=[ 751], 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= 1835, max= 1992, per=47.60%, avg=1934.40, stdev=68.96, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.93%, ctx=89, 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=179492: Fri Sep 4 06:07:16 2026 read: IOPS=0, BW=855KiB/s (876kB/s)(5120KiB/5986msec) clat (msec): min=84, max=671, avg=298.40, stdev=225.87 lat (msec): min=84, max=671, avg=298.40, stdev=225.87 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 85], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1835, max= 4039, per=90.80%, avg=2635.00, stdev=1219.84, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1197KiB/s (1226kB/s)(7168KiB/5986msec); 0 zone resets clat (msec): min=166, max=2491, avg=626.34, stdev=838.63 lat (msec): min=166, max=2491, avg=626.44, stdev=838.62 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 174], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 271], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 609], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 1892, max= 3992, per=60.94%, avg=2476.75, stdev=1011.86, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.07%, ctx=63, 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=2903KiB/s (2973kB/s), 290KiB/s-1482KiB/s (297kB/s-1518kB/s), io=20.0MiB (20.0MB), run=4836-7055msec WRITE: bw=4064KiB/s (4162kB/s), 943KiB/s-1451KiB/s (965kB/s-1486kB/s), io=28.0MiB (29.4MB), run=4836-7055msec 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=179504: Fri Sep 4 06:07:29 2026 read: IOPS=0, BW=3567KiB/s (3653kB/s)(12.0MiB/3445msec) clat (msec): min=936, max=1440, avg=1104.91, stdev=290.89 lat (msec): min=936, max=1440, avg=1104.91, stdev=290.89 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7846, max= 8126, per=100.00%, avg=7986.00, stdev=197.99, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=9.99%, ctx=298, 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=179505: Fri Sep 4 06:07:29 2026 read: IOPS=0, BW=1219KiB/s (1248kB/s)(4096KiB/3360msec) clat (nsec): min=1577.3M, max=1577.3M, avg=1577328357.00, stdev= 0.00 lat (nsec): min=1577.3M, max=1577.3M, avg=1577331339.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1586], 5.00th=[ 1586], 10.00th=[ 1586], 20.00th=[ 1586], | 30.00th=[ 1586], 40.00th=[ 1586], 50.00th=[ 1586], 60.00th=[ 1586], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7876, max= 7876, per=100.00%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2438KiB/s (2497kB/s)(8192KiB/3360msec); 0 zone resets clat (msec): min=329, max=1291, avg=810.39, stdev=680.50 lat (msec): min=329, max=1291, avg=810.75, stdev=680.53 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7876, max= 7876, per=93.12%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.47%, ctx=90, 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=179506: Fri Sep 4 06:07:29 2026 write: IOPS=0, BW=3172KiB/s (3248kB/s)(12.0MiB/3874msec); 0 zone resets clat (msec): min=1137, max=1354, avg=1255.80, stdev=110.12 lat (msec): min=1137, max=1355, avg=1256.07, stdev=110.07 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7846, max= 7907, per=93.12%, avg=7876.50, stdev=43.13, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=3.59%, ctx=77, 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=179508: Fri Sep 4 06:07:29 2026 write: IOPS=1, BW=4264KiB/s (4366kB/s)(12.0MiB/2882msec); 0 zone resets clat (msec): min=332, max=2049, avg=923.84, stdev=975.52 lat (msec): min=339, max=2050, avg=926.34, stdev=973.54 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 6023, max= 8126, per=83.64%, avg=7074.50, stdev=1487.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=5.87%, ctx=60, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4756KiB/s (4870kB/s), 1219KiB/s-3567KiB/s (1248kB/s-3653kB/s), io=16.0MiB (16.8MB), run=3360-3445msec WRITE: bw=8458KiB/s (8661kB/s), 2438KiB/s-4264KiB/s (2497kB/s-4366kB/s), io=32.0MiB (33.6MB), run=2882-3874msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179509: Fri Sep 4 06:07:29 2026 read: IOPS=0, BW=3188KiB/s (3265kB/s)(12.0MiB/3854msec) clat (msec): min=538, max=1711, avg=1188.01, stdev=596.84 lat (msec): min=538, max=1711, avg=1188.02, stdev=596.84 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7742, max= 8175, per=100.00%, avg=7958.50, stdev=306.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.00%, ctx=46, majf=0, minf=7 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=179510: Fri Sep 4 06:07:29 2026 read: IOPS=0, BW=1064KiB/s (1089kB/s)(4096KiB/3851msec) clat (nsec): min=1857.2M, max=1857.2M, avg=1857182850.00, stdev= 0.00 lat (nsec): min=1857.2M, max=1857.2M, avg=1857186451.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1854], 5.00th=[ 1854], 10.00th=[ 1854], 20.00th=[ 1854], | 30.00th=[ 1854], 40.00th=[ 1854], 50.00th=[ 1854], 60.00th=[ 1854], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7742, max= 7742, per=100.00%, avg=7742.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2127KiB/s (2178kB/s)(8192KiB/3851msec); 0 zone resets clat (msec): min=508, max=1152, avg=830.24, stdev=455.64 lat (msec): min=508, max=1152, avg=830.48, stdev=455.72 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] 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 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.51%, ctx=68, 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=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=179511: Fri Sep 4 06:07:29 2026 write: IOPS=0, BW=3031KiB/s (3104kB/s)(12.0MiB/4054msec); 0 zone resets clat (msec): min=460, max=2715, avg=1326.62, stdev=1214.63 lat (msec): min=461, max=2715, avg=1326.99, stdev=1214.61 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 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= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.12%, ctx=52, majf=0, minf=7 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=179512: Fri Sep 4 06:07:29 2026 write: IOPS=0, BW=4030KiB/s (4127kB/s)(12.0MiB/3049msec); 0 zone resets clat (msec): min=298, max=1321, avg=935.32, stdev=555.46 lat (msec): min=299, max=1322, avg=936.01, stdev=555.80 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8078, max= 8078, per=99.95%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.95%, ctx=48, 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 Run status group 0 (all jobs): READ: bw=4251KiB/s (4353kB/s), 1064KiB/s-3188KiB/s (1089kB/s-3265kB/s), io=16.0MiB (16.8MB), run=3851-3854msec WRITE: bw=8083KiB/s (8277kB/s), 2127KiB/s-4030KiB/s (2178kB/s-4127kB/s), io=32.0MiB (33.6MB), run=3049-4054msec