== sanity test 398b: DIO and buffer IO race ============== 11:39:35 (1786635575) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.99053 s, 8.4 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=180474: Thu Aug 13 11:42:06 2026 read: IOPS=11, BW=46.1KiB/s (47.2kB/s)(5992KiB/130059msec) clat (usec): min=39, max=599568, avg=47373.23, stdev=32718.55 lat (usec): min=40, max=599569, avg=47380.18, stdev=32716.73 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 14091], 10.00th=[ 19792], 20.00th=[ 25297], | 30.00th=[ 30016], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 46400], | 70.00th=[ 55837], 80.00th=[ 65799], 90.00th=[ 84411], 95.00th=[102237], | 99.00th=[152044], 99.50th=[179307], 99.90th=[244319], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 5, max= 96, per=25.07%, avg=45.64, stdev=18.71, samples=255 iops : min= 1, max= 24, avg=10.76, stdev= 4.69, samples=255 write: IOPS=12, BW=48.4KiB/s (49.6kB/s)(6296KiB/130059msec); 0 zone resets clat (usec): min=1241, max=325996, avg=37172.99, stdev=37131.08 lat (usec): min=1242, max=325998, avg=37188.18, stdev=37121.51 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1778], 10.00th=[ 2769], 20.00th=[ 5211], | 30.00th=[ 9372], 40.00th=[ 19792], 50.00th=[ 27657], 60.00th=[ 35390], | 70.00th=[ 46924], 80.00th=[ 63701], 90.00th=[ 88605], 95.00th=[107480], | 99.00th=[164627], 99.50th=[193987], 99.90th=[248513], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 7, max= 111, per=25.16%, avg=48.05, stdev=20.22, samples=255 iops : min= 1, max= 27, avg=11.37, stdev= 5.09, samples=255 lat (usec) : 50=0.10%, 100=1.17%, 250=0.29%, 500=0.03%, 750=0.03% lat (msec) : 2=3.19%, 4=4.56%, 10=8.66%, 20=7.71%, 50=42.25% lat (msec) : 100=25.98%, 250=5.96%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=5.31%, ctx=7157, 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=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=180475: Thu Aug 13 11:42:06 2026 read: IOPS=11, BW=46.3KiB/s (47.4kB/s)(5940KiB/128419msec) clat (usec): min=42, max=300041, avg=48359.13, stdev=31290.41 lat (usec): min=42, max=300042, avg=48385.40, stdev=31318.97 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 14353], 10.00th=[ 19530], 20.00th=[ 25297], | 30.00th=[ 30802], 40.00th=[ 35914], 50.00th=[ 41681], 60.00th=[ 48497], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[102237], | 99.00th=[156238], 99.50th=[191890], 99.90th=[283116], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 5, max= 102, per=25.07%, avg=45.63, stdev=17.68, samples=253 iops : min= 1, max= 25, avg=10.77, stdev= 4.45, samples=253 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6348KiB/128419msec); 0 zone resets clat (usec): min=1192, max=638348, avg=35317.70, stdev=37143.25 lat (usec): min=1193, max=638350, avg=35323.07, stdev=37142.15 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1696], 10.00th=[ 2540], 20.00th=[ 5080], | 30.00th=[ 8979], 40.00th=[ 17695], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 45876], 80.00th=[ 60556], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[147850], 99.50th=[168821], 99.90th=[256902], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 5, max= 111, per=25.53%, avg=48.76, stdev=20.86, samples=253 iops : min= 1, max= 27, avg=11.55, stdev= 5.24, samples=253 lat (usec) : 50=0.07%, 100=1.33%, 250=0.20%, 500=0.07% lat (msec) : 2=3.65%, 4=4.82%, 10=7.98%, 20=9.05%, 50=41.18% lat (msec) : 100=26.24%, 250=5.27%, 500=0.13%, 750=0.03% cpu : usr=0.08%, sys=5.52%, ctx=7214, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180477: Thu Aug 13 11:42:06 2026 read: IOPS=11, BW=47.1KiB/s (48.3kB/s)(6028KiB/127874msec) clat (usec): min=35, max=342867, avg=46352.95, stdev=30653.14 lat (usec): min=35, max=342868, avg=46355.46, stdev=30653.21 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 12387], 10.00th=[ 18220], 20.00th=[ 24249], | 30.00th=[ 28967], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 64750], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[154141], 99.50th=[183501], 99.90th=[244319], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 103, per=25.82%, avg=46.99, stdev=17.80, samples=250 iops : min= 1, max= 25, avg=11.11, stdev= 4.48, samples=250 write: IOPS=12, BW=48.0KiB/s (50.1kB/s)(6260KiB/127874msec); 0 zone resets clat (usec): min=1180, max=719613, avg=36712.40, stdev=39585.74 lat (usec): min=1181, max=719616, avg=36721.66, stdev=39596.18 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1844], 10.00th=[ 2802], 20.00th=[ 5342], | 30.00th=[ 9372], 40.00th=[ 18744], 50.00th=[ 27657], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[106431], | 99.00th=[158335], 99.50th=[177210], 99.90th=[252707], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 119, per=25.45%, avg=48.61, stdev=21.75, samples=251 iops : min= 1, max= 29, avg=11.51, stdev= 5.47, samples=251 lat (usec) : 50=0.20%, 100=1.37%, 250=0.36%, 500=0.10%, 1000=0.07% lat (msec) : 2=3.09%, 4=4.49%, 10=8.20%, 20=9.18%, 50=41.60% lat (msec) : 100=25.75%, 250=5.50%, 500=0.07%, 750=0.03% cpu : usr=0.08%, sys=5.38%, ctx=7095, 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=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=180479: Thu Aug 13 11:42:06 2026 read: IOPS=11, BW=46.0KiB/s (47.1kB/s)(6052KiB/131467msec) clat (usec): min=35, max=680358, avg=48336.59, stdev=34414.93 lat (usec): min=36, max=680359, avg=48338.38, stdev=34414.96 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 13566], 10.00th=[ 18744], 20.00th=[ 25035], | 30.00th=[ 29492], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 48497], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[105382], | 99.00th=[149947], 99.50th=[166724], 99.90th=[270533], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 95, per=25.19%, avg=45.84, stdev=16.80, samples=257 iops : min= 1, max= 23, avg=10.81, stdev= 4.23, samples=257 write: IOPS=11, BW=47.4KiB/s (48.6kB/s)(6236KiB/131467msec); 0 zone resets clat (usec): min=1165, max=318787, avg=37100.34, stdev=37125.64 lat (usec): min=1165, max=318789, avg=37102.58, stdev=37125.99 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1942], 10.00th=[ 3032], 20.00th=[ 5342], | 30.00th=[ 9634], 40.00th=[ 19530], 50.00th=[ 27657], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 62653], 90.00th=[ 85459], 95.00th=[109577], | 99.00th=[166724], 99.50th=[189793], 99.90th=[261096], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 8, max= 111, per=24.51%, avg=46.81, stdev=20.09, samples=259 iops : min= 2, max= 27, avg=11.05, stdev= 5.04, samples=259 lat (usec) : 50=0.20%, 100=1.17%, 250=0.16%, 500=0.16%, 750=0.03% lat (msec) : 2=2.60%, 4=4.72%, 10=8.33%, 20=8.82%, 50=41.28% lat (msec) : 100=25.98%, 250=6.41%, 500=0.10%, 750=0.03% cpu : usr=0.08%, sys=5.31%, ctx=7240, 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=183KiB/s (187kB/s), 46.0KiB/s-47.1KiB/s (47.1kB/s-48.3kB/s), io=23.4MiB (24.6MB), run=127874-131467msec WRITE: bw=191KiB/s (196kB/s), 47.4KiB/s-49.4KiB/s (48.6kB/s-50.6kB/s), io=24.6MiB (25.7MB), run=127874-131467msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180476: Thu Aug 13 11:42:44 2026 read: IOPS=8, BW=35.3KiB/s (36.2kB/s)(5992KiB/169533msec) clat (msec): min=7, max=668, avg=44.80, stdev=41.18 lat (msec): min=7, max=668, avg=44.80, stdev=41.18 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 49], 80.00th=[ 65], 90.00th=[ 99], 95.00th=[ 125], | 99.00th=[ 192], 99.50th=[ 218], 99.90th=[ 326], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 119, per=25.12%, avg=35.42, stdev=23.59, samples=329 iops : min= 1, max= 29, avg= 8.19, stdev= 5.90, samples=329 write: IOPS=9, BW=37.1KiB/s (38.0kB/s)(6296KiB/169533msec); 0 zone resets clat (msec): min=13, max=318, avg=64.78, stdev=43.53 lat (msec): min=13, max=318, avg=64.79, stdev=43.53 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 60], | 70.00th=[ 74], 80.00th=[ 96], 90.00th=[ 128], 95.00th=[ 150], | 99.00th=[ 222], 99.50th=[ 262], 99.90th=[ 288], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 7, max= 111, per=24.84%, avg=36.76, stdev=21.82, samples=333 iops : min= 1, max= 27, avg= 8.52, stdev= 5.46, samples=333 lat (msec) : 10=0.72%, 20=12.66%, 50=47.66%, 100=24.87%, 250=13.74% lat (msec) : 500=0.33%, 750=0.03% cpu : usr=0.06%, sys=2.37%, ctx=5089, 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=180478: Thu Aug 13 11:42:44 2026 read: IOPS=8, BW=34.0KiB/s (35.8kB/s)(5940KiB/169804msec) clat (msec): min=5, max=700, avg=44.75, stdev=43.08 lat (msec): min=5, max=700, avg=44.75, stdev=43.07 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 65], 90.00th=[ 101], 95.00th=[ 129], | 99.00th=[ 190], 99.50th=[ 230], 99.90th=[ 313], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 143, per=25.10%, avg=35.38, stdev=24.41, samples=325 iops : min= 1, max= 35, avg= 8.18, stdev= 6.12, samples=325 write: IOPS=9, BW=37.4KiB/s (38.3kB/s)(6348KiB/169804msec); 0 zone resets clat (msec): min=12, max=396, avg=64.82, stdev=44.66 lat (msec): min=12, max=396, avg=64.83, stdev=44.66 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 74], 80.00th=[ 96], 90.00th=[ 129], 95.00th=[ 157], | 99.00th=[ 211], 99.50th=[ 253], 99.90th=[ 351], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 111, per=24.98%, avg=36.98, stdev=22.63, samples=332 iops : min= 1, max= 27, avg= 8.57, stdev= 5.66, samples=332 lat (msec) : 10=0.94%, 20=14.36%, 50=46.61%, 100=23.47%, 250=14.16% lat (msec) : 500=0.42%, 750=0.03% cpu : usr=0.07%, sys=2.28%, ctx=5068, 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=180480: Thu Aug 13 11:42:44 2026 read: IOPS=8, BW=35.6KiB/s (36.5kB/s)(6028KiB/169285msec) clat (msec): min=6, max=312, avg=44.89, stdev=39.21 lat (msec): min=6, max=313, avg=44.90, stdev=39.21 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 63], 90.00th=[ 103], 95.00th=[ 128], | 99.00th=[ 197], 99.50th=[ 209], 99.90th=[ 284], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 143, per=25.78%, avg=36.35, stdev=23.20, samples=322 iops : min= 1, max= 35, avg= 8.42, stdev= 5.80, samples=322 write: IOPS=9, BW=36.0KiB/s (37.9kB/s)(6260KiB/169285msec); 0 zone resets clat (msec): min=11, max=717, avg=64.64, stdev=46.82 lat (msec): min=11, max=717, avg=64.64, stdev=46.82 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 74], 80.00th=[ 95], 90.00th=[ 126], 95.00th=[ 153], | 99.00th=[ 218], 99.50th=[ 247], 99.90th=[ 380], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 135, per=24.74%, avg=36.61, stdev=23.00, samples=332 iops : min= 1, max= 33, avg= 8.48, stdev= 5.76, samples=332 lat (msec) : 10=0.85%, 20=12.53%, 50=48.37%, 100=24.25%, 250=13.70% lat (msec) : 500=0.26%, 750=0.03% cpu : usr=0.06%, sys=2.25%, ctx=5005, 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=180481: Thu Aug 13 11:42:44 2026 read: IOPS=8, BW=35.7KiB/s (36.6kB/s)(6052KiB/169444msec) clat (msec): min=6, max=329, avg=43.77, stdev=38.27 lat (msec): min=6, max=329, avg=43.78, stdev=38.27 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 63], 90.00th=[ 93], 95.00th=[ 126], | 99.00th=[ 197], 99.50th=[ 213], 99.90th=[ 309], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 135, per=25.73%, avg=36.29, stdev=23.92, samples=325 iops : min= 1, max= 33, avg= 8.40, stdev= 6.00, samples=325 write: IOPS=9, BW=36.8KiB/s (37.7kB/s)(6236KiB/169444msec); 0 zone resets clat (msec): min=13, max=684, avg=65.86, stdev=48.45 lat (msec): min=13, max=684, avg=65.87, stdev=48.45 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 75], 80.00th=[ 96], 90.00th=[ 125], 95.00th=[ 159], | 99.00th=[ 232], 99.50th=[ 284], 99.90th=[ 397], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 111, per=24.72%, avg=36.58, stdev=22.09, samples=332 iops : min= 1, max= 27, avg= 8.48, stdev= 5.53, samples=332 lat (msec) : 10=0.75%, 20=13.64%, 50=47.30%, 100=24.84%, 250=13.02% lat (msec) : 500=0.42%, 750=0.03% cpu : usr=0.07%, sys=2.30%, ctx=5078, 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=141KiB/s (145kB/s), 34.0KiB/s-35.7KiB/s (35.8kB/s-36.6kB/s), io=23.4MiB (24.6MB), run=169285-169804msec WRITE: bw=148KiB/s (152kB/s), 36.8KiB/s-37.4KiB/s (37.7kB/s-38.3kB/s), io=24.6MiB (25.7MB), run=169285-169804msec 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=180525: Thu Aug 13 11:43:33 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5920KiB/34950msec) clat (usec): min=45, max=247728, avg=49859.86, stdev=33390.47 lat (usec): min=45, max=247729, avg=49885.14, stdev=33376.35 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 80], 10.00th=[ 14877], 20.00th=[ 25560], | 30.00th=[ 32113], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 53216], | 70.00th=[ 60556], 80.00th=[ 70779], 90.00th=[ 85459], 95.00th=[105382], | 99.00th=[166724], 99.50th=[206570], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 318, per=26.09%, avg=168.82, stdev=62.55, samples=68 iops : min= 1, max= 19, avg= 9.72, stdev= 3.93, samples=68 write: IOPS=11, BW=182KiB/s (187kB/s)(6368KiB/34950msec); 0 zone resets clat (msec): min=2, max=195, avg=41.12, stdev=35.37 lat (msec): min=2, max=195, avg=41.13, stdev=35.37 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 11], | 30.00th=[ 16], 40.00th=[ 24], 50.00th=[ 31], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 71], 90.00th=[ 95], 95.00th=[ 114], | 99.00th=[ 144], 99.50th=[ 176], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 31, max= 383, per=26.79%, avg=182.47, stdev=70.52, samples=68 iops : min= 1, max= 23, avg=10.59, stdev= 4.42, samples=68 lat (usec) : 50=0.13%, 100=3.12%, 250=0.91%, 500=0.13% lat (msec) : 2=0.13%, 4=2.73%, 10=7.42%, 20=9.51%, 50=39.19% lat (msec) : 100=29.69%, 250=7.03% cpu : usr=0.07%, sys=5.75%, ctx=1900, 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=180526: Thu Aug 13 11:43:33 2026 read: IOPS=9, BW=157KiB/s (161kB/s)(5744KiB/36501msec) clat (usec): min=55, max=267756, avg=53632.22, stdev=34228.12 lat (usec): min=56, max=267757, avg=53635.79, stdev=34227.51 clat percentiles (usec): | 1.00th=[ 68], 5.00th=[ 89], 10.00th=[ 21890], 20.00th=[ 28705], | 30.00th=[ 36439], 40.00th=[ 41681], 50.00th=[ 48497], 60.00th=[ 54264], | 70.00th=[ 63701], 80.00th=[ 74974], 90.00th=[ 88605], 95.00th=[112722], | 99.00th=[189793], 99.50th=[210764], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 24, max= 379, per=24.18%, avg=156.44, stdev=64.73, samples=71 iops : min= 1, max= 23, avg= 8.94, stdev= 4.04, samples=71 write: IOPS=11, BW=179KiB/s (184kB/s)(6544KiB/36501msec); 0 zone resets clat (usec): min=1803, max=236120, avg=41479.43, stdev=39481.73 lat (usec): min=1806, max=236123, avg=41533.14, stdev=39518.50 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 5], 20.00th=[ 9], | 30.00th=[ 13], 40.00th=[ 22], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 53], 80.00th=[ 71], 90.00th=[ 100], 95.00th=[ 120], | 99.00th=[ 171], 99.50th=[ 180], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 31, max= 383, per=26.16%, avg=178.13, stdev=76.46, samples=71 iops : min= 1, max= 23, avg=10.31, stdev= 4.78, samples=71 lat (usec) : 100=2.60%, 500=0.26% lat (msec) : 2=0.52%, 4=4.17%, 10=8.07%, 20=9.38%, 50=36.72% lat (msec) : 100=30.21%, 250=7.94%, 500=0.13% cpu : usr=0.09%, sys=5.67%, ctx=1944, 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=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=180527: Thu Aug 13 11:43:33 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(6256KiB/36981msec) clat (usec): min=45, max=228188, avg=52295.11, stdev=33937.00 lat (usec): min=45, max=228189, avg=52305.22, stdev=33942.88 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 96], 10.00th=[ 18220], 20.00th=[ 28705], | 30.00th=[ 34341], 40.00th=[ 40109], 50.00th=[ 47973], 60.00th=[ 55313], | 70.00th=[ 63177], 80.00th=[ 73925], 90.00th=[ 86508], 95.00th=[103285], | 99.00th=[208667], 99.50th=[221250], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 24, max= 351, per=26.09%, avg=168.81, stdev=66.71, samples=72 iops : min= 1, max= 21, avg= 9.72, stdev= 4.20, samples=72 write: IOPS=10, BW=163KiB/s (167kB/s)(6032KiB/36981msec); 0 zone resets clat (usec): min=1826, max=197408, avg=43020.46, stdev=38434.01 lat (usec): min=1830, max=197412, avg=43024.66, stdev=38435.74 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 5], 20.00th=[ 10], | 30.00th=[ 17], 40.00th=[ 24], 50.00th=[ 32], 60.00th=[ 43], | 70.00th=[ 56], 80.00th=[ 73], 90.00th=[ 97], 95.00th=[ 116], | 99.00th=[ 169], 99.50th=[ 192], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 62, max= 350, per=23.79%, avg=162.01, stdev=68.72, samples=71 iops : min= 3, max= 21, avg= 9.30, stdev= 4.31, samples=71 lat (usec) : 50=0.13%, 100=2.47%, 250=0.65%, 500=0.13%, 750=0.13% lat (msec) : 2=0.39%, 4=3.78%, 10=6.25%, 20=8.20%, 50=37.11% lat (msec) : 100=33.46%, 250=7.29% cpu : usr=0.07%, sys=5.46%, ctx=1994, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180529: Thu Aug 13 11:43:33 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(6032KiB/35089msec) clat (usec): min=45, max=286833, avg=50103.60, stdev=38496.47 lat (usec): min=46, max=286835, avg=50107.16, stdev=38497.23 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 75], 10.00th=[ 109], 20.00th=[ 23200], | 30.00th=[ 31327], 40.00th=[ 36439], 50.00th=[ 43779], 60.00th=[ 51643], | 70.00th=[ 59507], 80.00th=[ 68682], 90.00th=[ 96994], 95.00th=[121111], | 99.00th=[198181], 99.50th=[225444], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 63, max= 349, per=26.85%, avg=173.71, stdev=64.79, samples=68 iops : min= 3, max= 21, avg=10.03, stdev= 4.06, samples=68 write: IOPS=11, BW=178KiB/s (183kB/s)(6256KiB/35089msec); 0 zone resets clat (msec): min=2, max=237, avg=40.44, stdev=38.02 lat (msec): min=2, max=237, avg=40.44, stdev=38.03 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 13], 40.00th=[ 20], 50.00th=[ 30], 60.00th=[ 41], | 70.00th=[ 53], 80.00th=[ 68], 90.00th=[ 94], 95.00th=[ 114], | 99.00th=[ 171], 99.50th=[ 203], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 380, per=26.23%, avg=178.59, stdev=77.65, samples=69 iops : min= 1, max= 23, avg=10.35, stdev= 4.87, samples=69 lat (usec) : 50=0.26%, 100=4.56%, 250=1.04%, 1000=0.26% lat (msec) : 4=3.52%, 10=8.85%, 20=10.03%, 50=34.51%, 100=28.39% lat (msec) : 250=8.46%, 500=0.13% cpu : usr=0.07%, sys=5.50%, ctx=1799, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=648KiB/s (663kB/s), 157KiB/s-172KiB/s (161kB/s-176kB/s), io=23.4MiB (24.5MB), run=34950-36981msec WRITE: bw=681KiB/s (698kB/s), 163KiB/s-182KiB/s (167kB/s-187kB/s), io=24.6MiB (25.8MB), run=34950-36981msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180530: Thu Aug 13 11:43:44 2026 read: IOPS=7, BW=123KiB/s (126kB/s)(5920KiB/47989msec) clat (msec): min=8, max=229, avg=50.94, stdev=41.43 lat (msec): min=8, max=229, avg=50.94, stdev=41.43 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 81], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 186], 99.50th=[ 213], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 31, max= 411, per=24.86%, avg=124.03, stdev=78.92, samples=91 iops : min= 1, max= 25, avg= 6.93, stdev= 4.95, samples=91 write: IOPS=8, BW=133KiB/s (136kB/s)(6368KiB/47989msec); 0 zone resets clat (msec): min=12, max=289, avg=72.40, stdev=47.16 lat (msec): min=12, max=289, avg=72.41, stdev=47.16 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 71], | 70.00th=[ 83], 80.00th=[ 102], 90.00th=[ 142], 95.00th=[ 171], | 99.00th=[ 236], 99.50th=[ 264], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 349, per=24.90%, avg=130.74, stdev=75.17, samples=94 iops : min= 1, max= 21, avg= 7.35, stdev= 4.70, samples=94 lat (msec) : 10=0.78%, 20=8.72%, 50=44.27%, 100=28.52%, 250=17.45% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=2.22%, ctx=1245, 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=180531: Thu Aug 13 11:43:44 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(5744KiB/47609msec) clat (msec): min=8, max=209, avg=47.66, stdev=38.84 lat (msec): min=8, max=209, avg=47.66, stdev=38.84 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 68], 90.00th=[ 111], 95.00th=[ 131], | 99.00th=[ 194], 99.50th=[ 205], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 29, max= 319, per=24.70%, avg=123.25, stdev=78.42, samples=92 iops : min= 1, max= 19, avg= 6.88, stdev= 4.92, samples=92 write: IOPS=8, BW=137KiB/s (141kB/s)(6544KiB/47609msec); 0 zone resets clat (msec): min=18, max=280, avg=74.23, stdev=47.32 lat (msec): min=18, max=280, avg=74.23, stdev=47.31 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 28], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 51], 50.00th=[ 58], 60.00th=[ 71], | 70.00th=[ 87], 80.00th=[ 107], 90.00th=[ 138], 95.00th=[ 176], | 99.00th=[ 222], 99.50th=[ 251], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 319, per=26.32%, avg=138.17, stdev=73.37, samples=93 iops : min= 1, max= 19, avg= 7.83, stdev= 4.59, samples=93 lat (msec) : 10=0.13%, 20=8.72%, 50=45.31%, 100=28.65%, 250=16.93% lat (msec) : 500=0.26% cpu : usr=0.07%, sys=2.11%, ctx=1252, 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=180532: Thu Aug 13 11:43:44 2026 read: IOPS=8, BW=134KiB/s (137kB/s)(6256KiB/46749msec) clat (msec): min=8, max=233, avg=47.01, stdev=37.48 lat (msec): min=8, max=233, avg=47.02, stdev=37.48 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 68], 90.00th=[ 106], 95.00th=[ 130], | 99.00th=[ 188], 99.50th=[ 209], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 446, per=27.20%, avg=135.73, stdev=86.82, samples=91 iops : min= 1, max= 27, avg= 7.67, stdev= 5.46, samples=91 write: IOPS=8, BW=129KiB/s (132kB/s)(6032KiB/46749msec); 0 zone resets clat (msec): min=16, max=266, avg=73.78, stdev=42.99 lat (msec): min=16, max=266, avg=73.79, stdev=42.99 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 30], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 51], 50.00th=[ 62], 60.00th=[ 70], | 70.00th=[ 89], 80.00th=[ 106], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 207], 99.50th=[ 241], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 30, max= 411, per=24.66%, avg=129.47, stdev=68.63, samples=91 iops : min= 1, max= 25, avg= 7.27, stdev= 4.27, samples=91 lat (msec) : 10=0.13%, 20=8.72%, 50=46.35%, 100=27.73%, 250=16.93% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.23%, ctx=1245, 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=180533: Thu Aug 13 11:43:44 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(6032KiB/47661msec) clat (msec): min=7, max=223, avg=49.81, stdev=40.16 lat (msec): min=7, max=223, avg=49.81, stdev=40.16 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 71], 90.00th=[ 113], 95.00th=[ 144], | 99.00th=[ 186], 99.50th=[ 215], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 349, per=25.94%, avg=129.46, stdev=76.06, samples=91 iops : min= 1, max= 21, avg= 7.25, stdev= 4.76, samples=91 write: IOPS=8, BW=131KiB/s (134kB/s)(6256KiB/47661msec); 0 zone resets clat (msec): min=15, max=282, avg=72.49, stdev=47.11 lat (msec): min=15, max=282, avg=72.50, stdev=47.11 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 50], 50.00th=[ 59], 60.00th=[ 71], | 70.00th=[ 84], 80.00th=[ 101], 90.00th=[ 140], 95.00th=[ 171], | 99.00th=[ 243], 99.50th=[ 271], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 443, per=25.24%, avg=132.48, stdev=77.15, samples=93 iops : min= 1, max= 27, avg= 7.46, stdev= 4.82, samples=93 lat (msec) : 10=0.52%, 20=8.33%, 50=45.31%, 100=29.82%, 250=15.63% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=2.27%, ctx=1278, 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=499KiB/s (511kB/s), 121KiB/s-134KiB/s (124kB/s-137kB/s), io=23.4MiB (24.5MB), run=46749-47989msec WRITE: bw=525KiB/s (538kB/s), 129KiB/s-137KiB/s (132kB/s-141kB/s), io=24.6MiB (25.8MB), run=46749-47989msec 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=180545: Thu Aug 13 11:44:07 2026 read: IOPS=0, BW=691KiB/s (708kB/s)(7168KiB/10371msec) clat (usec): min=892, max=4862.8k, avg=1238783.66, stdev=1953241.33 lat (usec): min=895, max=4862.8k, avg=1238785.67, stdev=1953241.29 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 889], 10.00th=[ 889], | 20.00th=[ 2966], 30.00th=[ 149947], 40.00th=[ 149947], | 50.00th=[ 175113], 60.00th=[ 346031], 70.00th=[ 346031], | 80.00th=[3137340], 90.00th=[4865393], 95.00th=[4865393], | 99.00th=[4865393], 99.50th=[4865393], 99.90th=[4865393], | 99.95th=[4865393], 99.99th=[4865393] bw ( KiB/s): min= 2015, max= 4063, per=100.00%, avg=2434.20, stdev=910.59, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=494KiB/s (506kB/s)(5120KiB/10371msec); 0 zone resets clat (msec): min=201, max=427, avg=322.84, stdev=97.17 lat (msec): min=212, max=427, avg=325.27, stdev=93.60 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 380], 80.00th=[ 380], 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= 1950, max= 3757, per=97.00%, avg=2579.33, stdev=1020.69, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 250=33.33%, 500=33.33%, >=2000=16.67% cpu : usr=0.00%, sys=6.45%, ctx=908, 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=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=180546: Thu Aug 13 11:44:07 2026 read: IOPS=0, BW=190KiB/s (195kB/s)(2048KiB/10779msec) clat (msec): min=179, max=235, avg=207.17, stdev=39.59 lat (msec): min=179, max=235, avg=207.18, stdev=39.59 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 236], 90.00th=[ 236], 95.00th=[ 236], | 99.00th=[ 236], 99.50th=[ 236], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 1420, max= 2039, per=91.07%, avg=1729.50, stdev=437.70, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=950KiB/s (973kB/s)(10.0MiB/10779msec); 0 zone resets clat (msec): min=172, max=3381, avg=1012.02, stdev=1252.22 lat (msec): min=173, max=3381, avg=1012.18, stdev=1252.17 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 180], | 30.00th=[ 199], 40.00th=[ 309], 50.00th=[ 472], 60.00th=[ 498], | 70.00th=[ 634], 80.00th=[ 978], 90.00th=[ 3306], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 2019, max= 4096, per=98.50%, avg=2619.14, stdev=1003.13, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33%, >=2000=16.67% cpu : usr=0.01%, sys=5.35%, ctx=153, 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=180548: Thu Aug 13 11:44:07 2026 read: IOPS=0, BW=618KiB/s (633kB/s)(6144KiB/9940msec) clat (msec): min=4, max=322, avg=179.61, stdev=136.36 lat (msec): min=4, max=322, avg=179.62, stdev=136.36 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 12], | 30.00th=[ 12], 40.00th=[ 232], 50.00th=[ 232], 60.00th=[ 253], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 1878, max= 4096, per=100.00%, avg=3351.00, stdev=1275.68, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=618KiB/s (633kB/s)(6144KiB/9940msec); 0 zone resets clat (msec): min=142, max=3842, avg=1418.46, stdev=1713.06 lat (msec): min=143, max=3842, avg=1418.72, stdev=1712.92 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 667], | 70.00th=[ 3373], 80.00th=[ 3373], 90.00th=[ 3842], 95.00th=[ 3842], | 99.00th=[ 3842], 99.50th=[ 3842], 99.90th=[ 3842], 99.95th=[ 3842], | 99.99th=[ 3842] bw ( KiB/s): min= 1432, max= 3757, per=84.98%, avg=2259.60, stdev=877.06, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 10=8.33%, 20=8.33%, 250=25.00%, 500=33.33%, 750=8.33% lat (msec) : >=2000=16.67% cpu : usr=0.01%, sys=4.98%, ctx=257, 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=180549: Thu Aug 13 11:44:07 2026 read: IOPS=0, BW=549KiB/s (562kB/s)(5120KiB/9323msec) clat (usec): min=1281, max=291325, avg=165734.06, stdev=149440.03 lat (usec): min=1282, max=291325, avg=165735.61, stdev=149440.12 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1287], 10.00th=[ 1287], 20.00th=[ 1287], | 30.00th=[ 4424], 40.00th=[ 4424], 50.00th=[250610], 60.00th=[250610], | 70.00th=[278922], 80.00th=[278922], 90.00th=[291505], 95.00th=[291505], | 99.00th=[291505], 99.50th=[291505], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 4087, max= 4096, per=100.00%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=0, BW=769KiB/s (787kB/s)(7168KiB/9323msec); 0 zone resets clat (msec): min=209, max=3501, avg=1190.18, stdev=1523.01 lat (msec): min=209, max=3501, avg=1190.49, stdev=1522.88 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 266], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 351], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 3339], 90.00th=[ 3507], 95.00th=[ 3507], | 99.00th=[ 3507], 99.50th=[ 3507], 99.90th=[ 3507], 99.95th=[ 3507], | 99.99th=[ 3507] bw ( KiB/s): min= 1410, max= 4063, per=84.84%, avg=2256.00, stdev=918.44, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 2=8.33%, 10=8.33%, 250=8.33%, 500=58.33%, >=2000=16.67% cpu : usr=0.01%, sys=5.98%, ctx=172, 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=1900KiB/s (1946kB/s), 190KiB/s-691KiB/s (195kB/s-708kB/s), io=20.0MiB (20.0MB), run=9323-10779msec WRITE: bw=2660KiB/s (2724kB/s), 494KiB/s-950KiB/s (506kB/s-973kB/s), io=28.0MiB (29.4MB), run=9323-10779msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180551: Thu Aug 13 11:44:08 2026 read: IOPS=0, BW=642KiB/s (657kB/s)(7168KiB/11168msec) clat (msec): min=116, max=3620, avg=1346.36, stdev=1519.20 lat (msec): min=116, max=3620, avg=1346.37, stdev=1519.20 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 124], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 368], 60.00th=[ 1989], | 70.00th=[ 1989], 80.00th=[ 3037], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1896, max= 4039, per=100.00%, avg=2494.50, stdev=1031.51, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=458KiB/s (469kB/s)(5120KiB/11168msec); 0 zone resets clat (msec): min=153, max=786, avg=313.87, stdev=266.38 lat (msec): min=154, max=786, avg=314.09, stdev=266.28 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1768, max= 5965, per=100.00%, avg=3866.50, stdev=2967.73, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 250=58.33%, 500=8.33%, 1000=8.33%, 2000=8.33%, >=2000=16.67% cpu : usr=0.01%, sys=2.17%, ctx=121, 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=180552: Thu Aug 13 11:44:08 2026 read: IOPS=0, BW=186KiB/s (191kB/s)(2048KiB/11000msec) clat (msec): min=102, max=296, avg=199.63, stdev=137.44 lat (msec): min=102, max=296, avg=199.63, stdev=137.44 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 103], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 103], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 1976, max= 2043, per=100.00%, avg=2009.50, stdev=47.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=931KiB/s (953kB/s)(10.0MiB/11000msec); 0 zone resets clat (msec): min=140, max=3585, avg=1041.38, stdev=1257.01 lat (msec): min=140, max=3585, avg=1041.75, stdev=1256.85 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 234], | 30.00th=[ 355], 40.00th=[ 393], 50.00th=[ 514], 60.00th=[ 514], | 70.00th=[ 693], 80.00th=[ 793], 90.00th=[ 3205], 95.00th=[ 3574], | 99.00th=[ 3574], 99.50th=[ 3574], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 1809, max= 4079, per=100.00%, avg=2573.29, stdev=1026.08, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=25.00%, 500=25.00%, 750=25.00%, 1000=8.33%, >=2000=16.67% cpu : usr=0.00%, sys=3.38%, ctx=151, 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=180553: Thu Aug 13 11:44:08 2026 read: IOPS=0, BW=600KiB/s (615kB/s)(6144KiB/10236msec) clat (msec): min=101, max=693, avg=297.97, stdev=265.89 lat (msec): min=101, max=693, avg=297.97, stdev=265.89 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 116], | 30.00th=[ 116], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 176], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1768, max= 4000, per=100.00%, avg=2404.00, stdev=1070.66, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=600KiB/s (615kB/s)(6144KiB/10236msec); 0 zone resets clat (msec): min=168, max=3576, avg=1402.99, stdev=1638.75 lat (msec): min=168, max=3577, avg=1403.15, stdev=1638.84 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 456], | 70.00th=[ 3440], 80.00th=[ 3440], 90.00th=[ 3574], 95.00th=[ 3574], | 99.00th=[ 3574], 99.50th=[ 3574], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 1809, max= 2043, per=74.95%, avg=1924.00, stdev=95.72, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, >=2000=16.67% cpu : usr=0.03%, sys=1.95%, ctx=79, 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=180554: Thu Aug 13 11:44:08 2026 read: IOPS=0, BW=481KiB/s (493kB/s)(5120KiB/10642msec) clat (msec): min=124, max=329, avg=205.47, stdev=97.95 lat (msec): min=124, max=329, avg=205.47, stdev=97.95 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 153], 60.00th=[ 153], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 1976, max= 6119, per=100.00%, avg=4047.50, stdev=2929.54, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=0, BW=674KiB/s (690kB/s)(7168KiB/10642msec); 0 zone resets clat (msec): min=138, max=3720, avg=1337.13, stdev=1586.59 lat (msec): min=138, max=3720, avg=1337.97, stdev=1586.01 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 249], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 567], 60.00th=[ 793], | 70.00th=[ 793], 80.00th=[ 3540], 90.00th=[ 3708], 95.00th=[ 3708], | 99.00th=[ 3708], 99.50th=[ 3708], 99.90th=[ 3708], 99.95th=[ 3708], | 99.99th=[ 3708] bw ( KiB/s): min= 1809, max= 2043, per=77.21%, avg=1982.00, stdev=98.22, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33%, >=2000=16.67% cpu : usr=0.02%, sys=2.29%, 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=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=1834KiB/s (1878kB/s), 186KiB/s-642KiB/s (191kB/s-657kB/s), io=20.0MiB (20.0MB), run=10236-11168msec WRITE: bw=2567KiB/s (2629kB/s), 458KiB/s-931KiB/s (469kB/s-953kB/s), io=28.0MiB (29.4MB), run=10236-11168msec 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=180566: Thu Aug 13 11:44:25 2026 read: IOPS=0, BW=3988KiB/s (4084kB/s)(12.0MiB/3081msec) clat (msec): min=917, max=1024, avg=954.06, stdev=60.71 lat (msec): min=917, max=1024, avg=954.07, stdev=60.71 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, 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=0.00%, sys=13.38%, ctx=366, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180567: Thu Aug 13 11:44:25 2026 read: IOPS=0, BW=1178KiB/s (1207kB/s)(4096KiB/3476msec) clat (nsec): min=964410k, max=964410k, avg=964410490.00, stdev= 0.00 lat (nsec): min=964413k, max=964413k, avg=964413149.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 961], 5.00th=[ 961], 10.00th=[ 961], 20.00th=[ 961], | 30.00th=[ 961], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] 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=2357KiB/s (2413kB/s)(8192KiB/3476msec); 0 zone resets clat (msec): min=856, max=1410, avg=1133.42, stdev=391.17 lat (msec): min=858, max=1413, avg=1136.17, stdev=392.65 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7984, max= 7984, per=84.70%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.57%, ctx=100, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180568: Thu Aug 13 11:44:25 2026 write: IOPS=1, BW=6334KiB/s (6486kB/s)(12.0MiB/1940msec); 0 zone resets clat (msec): min=353, max=988, avg=623.21, stdev=328.12 lat (msec): min=358, max=990, avg=626.06, stdev=326.79 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 5979, max= 8078, per=74.57%, avg=7028.50, stdev=1484.22, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=6.29%, ctx=70, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180569: Thu Aug 13 11:44:25 2026 write: IOPS=0, BW=3585KiB/s (3671kB/s)(12.0MiB/3428msec); 0 zone resets clat (msec): min=377, max=1629, avg=1082.80, stdev=640.61 lat (msec): min=379, max=1631, avg=1084.73, stdev=640.45 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8078, max= 8143, per=86.04%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.03%, sys=3.91%, ctx=70, 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=4713KiB/s (4827kB/s), 1178KiB/s-3988KiB/s (1207kB/s-4084kB/s), io=16.0MiB (16.8MB), run=3081-3476msec WRITE: bw=9427KiB/s (9653kB/s), 2357KiB/s-6334KiB/s (2413kB/s-6486kB/s), io=32.0MiB (33.6MB), run=1940-3476msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180562: Thu Aug 13 11:44:26 2026 read: IOPS=0, BW=3140KiB/s (3216kB/s)(12.0MiB/3913msec) clat (msec): min=661, max=2113, avg=1247.48, stdev=765.44 lat (msec): min=661, max=2113, avg=1247.48, stdev=765.44 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 8015, max= 8078, per=100.00%, avg=8046.50, stdev=44.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.04%, ctx=44, 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=180563: Thu Aug 13 11:44:26 2026 read: IOPS=0, BW=1050KiB/s (1075kB/s)(4096KiB/3900msec) clat (nsec): min=2341.1M, max=2341.1M, avg=2341138384.00, stdev= 0.00 lat (nsec): min=2341.1M, max=2341.1M, avg=2341141624.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2333], 5.00th=[ 2333], 10.00th=[ 2333], 20.00th=[ 2333], | 30.00th=[ 2333], 40.00th=[ 2333], 50.00th=[ 2333], 60.00th=[ 2333], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2101KiB/s (2151kB/s)(8192KiB/3900msec); 0 zone resets clat (msec): min=367, max=1073, avg=720.49, stdev=499.75 lat (msec): min=368, max=1076, avg=722.48, stdev=499.99 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] 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) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.13%, ctx=58, 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=180564: Thu Aug 13 11:44:26 2026 write: IOPS=0, BW=2975KiB/s (3047kB/s)(12.0MiB/4130msec); 0 zone resets clat (msec): min=975, max=1645, avg=1338.42, stdev=338.39 lat (msec): min=977, max=1646, avg=1339.76, stdev=337.91 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 8015, max= 8159, per=100.00%, avg=8087.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.11%, ctx=63, 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=180565: Thu Aug 13 11:44:26 2026 write: IOPS=0, BW=3695KiB/s (3783kB/s)(12.0MiB/3326msec); 0 zone resets clat (msec): min=335, max=2528, avg=1067.91, stdev=1265.30 lat (msec): min=336, max=2529, avg=1069.06, stdev=1264.69 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 2534], 80.00th=[ 2534], 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= 7728, max= 8175, per=100.00%, avg=7951.50, stdev=316.08, 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=4.09%, ctx=58, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4187KiB/s (4288kB/s), 1050KiB/s-3140KiB/s (1075kB/s-3216kB/s), io=16.0MiB (16.8MB), run=3900-3913msec WRITE: bw=7934KiB/s (8125kB/s), 2101KiB/s-3695KiB/s (2151kB/s-3783kB/s), io=32.0MiB (33.6MB), run=3326-4130msec