== sanity test 398b: DIO and buffer IO race ============== 21:13:54 (1786756434) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.65585 s, 8.9 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=180073: Fri Aug 14 21:16:01 2026 read: IOPS=13, BW=54.6KiB/s (55.9kB/s)(5992KiB/109687msec) clat (usec): min=40, max=196073, avg=40033.59, stdev=26999.94 lat (usec): min=41, max=196075, avg=40035.68, stdev=27000.54 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 10814], 10.00th=[ 15139], 20.00th=[ 19530], | 30.00th=[ 23987], 40.00th=[ 28967], 50.00th=[ 34341], 60.00th=[ 40109], | 70.00th=[ 47449], 80.00th=[ 55837], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[147850], 99.50th=[164627], 99.90th=[187696], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 7, max= 103, per=24.77%, avg=53.99, stdev=20.34, samples=217 iops : min= 1, max= 25, avg=12.88, stdev= 5.11, samples=217 write: IOPS=14, BW=57.4KiB/s (58.8kB/s)(6296KiB/109687msec); 0 zone resets clat (usec): min=1090, max=683607, avg=31399.60, stdev=35697.45 lat (usec): min=1091, max=683608, avg=31403.61, stdev=35697.29 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1532], 10.00th=[ 2212], 20.00th=[ 4228], | 30.00th=[ 8356], 40.00th=[ 15533], 50.00th=[ 22938], 60.00th=[ 30540], | 70.00th=[ 38536], 80.00th=[ 51119], 90.00th=[ 71828], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[160433], 99.90th=[256902], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 134, per=24.90%, avg=57.01, stdev=24.96, samples=216 iops : min= 1, max= 33, avg=13.63, stdev= 6.28, samples=216 lat (usec) : 50=0.23%, 100=1.40%, 250=0.20%, 500=0.07% lat (msec) : 2=4.36%, 4=5.60%, 10=7.45%, 20=14.26%, 50=42.64% lat (msec) : 100=20.12%, 250=3.61%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=6.61%, ctx=7002, majf=0, minf=18 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=180074: Fri Aug 14 21:16:01 2026 read: IOPS=13, BW=54.9KiB/s (56.2kB/s)(5940KiB/108222msec) clat (usec): min=40, max=219836, avg=41103.21, stdev=26090.21 lat (usec): min=40, max=219837, avg=41104.99, stdev=26090.25 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11863], 10.00th=[ 16450], 20.00th=[ 20841], | 30.00th=[ 25297], 40.00th=[ 30016], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 72877], 95.00th=[ 86508], | 99.00th=[137364], 99.50th=[149947], 99.90th=[193987], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 7, max= 112, per=24.94%, avg=54.37, stdev=19.60, samples=214 iops : min= 1, max= 28, avg=12.97, stdev= 4.95, samples=214 write: IOPS=14, BW=58.7KiB/s (60.1kB/s)(6348KiB/108222msec); 0 zone resets clat (usec): min=1109, max=690059, avg=29529.75, stdev=34948.88 lat (usec): min=1110, max=690060, avg=29531.54, stdev=34948.78 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1450], 10.00th=[ 2114], 20.00th=[ 3785], | 30.00th=[ 6652], 40.00th=[ 12518], 50.00th=[ 20317], 60.00th=[ 27657], | 70.00th=[ 36963], 80.00th=[ 49021], 90.00th=[ 70779], 95.00th=[ 89654], | 99.00th=[126354], 99.50th=[168821], 99.90th=[304088], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 151, per=25.43%, avg=58.23, stdev=27.19, samples=213 iops : min= 1, max= 37, avg=13.94, stdev= 6.84, samples=213 lat (usec) : 50=0.23%, 100=1.20%, 250=0.16% lat (msec) : 2=4.79%, 4=6.15%, 10=7.98%, 20=13.64%, 50=42.12% lat (msec) : 100=20.74%, 250=2.93%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=6.63%, ctx=6856, majf=0, minf=18 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=180075: Fri Aug 14 21:16:01 2026 read: IOPS=13, BW=55.4KiB/s (56.8kB/s)(6028KiB/108742msec) clat (usec): min=32, max=218320, avg=38965.43, stdev=25243.12 lat (usec): min=32, max=218322, avg=38970.23, stdev=25245.69 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 10028], 10.00th=[ 14615], 20.00th=[ 20317], | 30.00th=[ 23987], 40.00th=[ 28443], 50.00th=[ 33424], 60.00th=[ 40109], | 70.00th=[ 46400], 80.00th=[ 54789], 90.00th=[ 70779], 95.00th=[ 85459], | 99.00th=[122160], 99.50th=[137364], 99.90th=[189793], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 7, max= 104, per=25.27%, avg=55.08, stdev=20.48, samples=214 iops : min= 1, max= 26, avg=13.15, stdev= 5.16, samples=214 write: IOPS=14, BW=57.6KiB/s (58.9kB/s)(6260KiB/108742msec); 0 zone resets clat (usec): min=1113, max=709391, avg=31795.01, stdev=35246.41 lat (usec): min=1114, max=709392, avg=31797.29, stdev=35246.04 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1549], 10.00th=[ 2507], 20.00th=[ 4621], | 30.00th=[ 8225], 40.00th=[ 16450], 50.00th=[ 23725], 60.00th=[ 30802], | 70.00th=[ 40109], 80.00th=[ 53216], 90.00th=[ 71828], 95.00th=[ 91751], | 99.00th=[143655], 99.50th=[162530], 99.90th=[204473], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 112, per=24.99%, avg=57.22, stdev=22.86, samples=214 iops : min= 1, max= 28, avg=13.69, stdev= 5.76, samples=214 lat (usec) : 50=0.36%, 100=1.27%, 250=0.20%, 500=0.10%, 1000=0.03% lat (msec) : 2=3.81%, 4=5.18%, 10=8.27%, 20=13.51%, 50=43.46% lat (msec) : 100=20.35%, 250=3.45%, 750=0.03% cpu : usr=0.07%, sys=6.38%, ctx=6943, 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=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=180076: Fri Aug 14 21:16:01 2026 read: IOPS=13, BW=55.4KiB/s (56.7kB/s)(6052KiB/109306msec) clat (usec): min=34, max=250331, avg=39622.58, stdev=25466.13 lat (usec): min=35, max=250332, avg=39624.95, stdev=25465.87 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11863], 10.00th=[ 15664], 20.00th=[ 20579], | 30.00th=[ 25035], 40.00th=[ 29754], 50.00th=[ 34866], 60.00th=[ 39584], | 70.00th=[ 46400], 80.00th=[ 55313], 90.00th=[ 68682], 95.00th=[ 85459], | 99.00th=[128451], 99.50th=[149947], 99.90th=[214959], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 7, max= 110, per=25.15%, avg=54.83, stdev=20.17, samples=216 iops : min= 1, max= 27, avg=13.09, stdev= 5.08, samples=216 write: IOPS=14, BW=57.1KiB/s (58.4kB/s)(6236KiB/109306msec); 0 zone resets clat (usec): min=1023, max=469551, avg=31472.86, stdev=32760.72 lat (usec): min=1025, max=469552, avg=31479.77, stdev=32758.49 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1532], 10.00th=[ 2409], 20.00th=[ 4686], | 30.00th=[ 8848], 40.00th=[ 16909], 50.00th=[ 23200], 60.00th=[ 30016], | 70.00th=[ 39584], 80.00th=[ 52691], 90.00th=[ 71828], 95.00th=[ 90702], | 99.00th=[128451], 99.50th=[158335], 99.90th=[312476], 99.95th=[467665], | 99.99th=[467665] bw ( KiB/s): min= 7, max= 125, per=24.66%, avg=56.47, stdev=22.13, samples=216 iops : min= 1, max= 31, avg=13.50, stdev= 5.58, samples=216 lat (usec) : 50=0.23%, 100=1.04%, 250=0.16%, 500=0.07% lat (msec) : 2=3.91%, 4=5.01%, 10=7.65%, 20=13.83%, 50=44.14% lat (msec) : 100=20.74%, 250=3.12%, 500=0.10% cpu : usr=0.09%, sys=6.57%, ctx=7019, majf=0, minf=18 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=219KiB/s (224kB/s), 54.6KiB/s-55.4KiB/s (55.9kB/s-56.8kB/s), io=23.4MiB (24.6MB), run=108222-109687msec WRITE: bw=229KiB/s (235kB/s), 57.1KiB/s-58.7KiB/s (58.4kB/s-60.1kB/s), io=24.6MiB (25.7MB), run=108222-109687msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180078: Fri Aug 14 21:16:36 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5992KiB/144036msec) clat (msec): min=5, max=562, avg=37.95, stdev=36.62 lat (msec): min=5, max=562, avg=37.96, stdev=36.62 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 56], 90.00th=[ 84], 95.00th=[ 107], | 99.00th=[ 178], 99.50th=[ 213], 99.90th=[ 305], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 7, max= 151, per=25.53%, avg=42.12, stdev=27.46, samples=278 iops : min= 1, max= 37, avg= 9.88, stdev= 6.89, samples=278 write: IOPS=10, BW=43.7KiB/s (44.8kB/s)(6296KiB/144036msec); 0 zone resets clat (msec): min=9, max=325, avg=55.29, stdev=38.91 lat (msec): min=9, max=325, avg=55.30, stdev=38.91 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 63], 80.00th=[ 81], 90.00th=[ 107], 95.00th=[ 133], | 99.00th=[ 194], 99.50th=[ 234], 99.90th=[ 271], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 7, max= 135, per=25.11%, avg=43.43, stdev=26.53, samples=283 iops : min= 1, max= 33, avg=10.20, stdev= 6.66, samples=283 lat (msec) : 10=2.64%, 20=19.79%, 50=45.08%, 100=23.05%, 250=9.18% lat (msec) : 500=0.23%, 750=0.03% cpu : usr=0.06%, sys=2.59%, ctx=5096, 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=180079: Fri Aug 14 21:16:36 2026 read: IOPS=10, BW=41.0KiB/s (42.0kB/s)(5940KiB/144744msec) clat (msec): min=5, max=783, avg=37.88, stdev=39.47 lat (msec): min=5, max=783, avg=37.89, stdev=39.47 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 55], 90.00th=[ 83], 95.00th=[ 106], | 99.00th=[ 176], 99.50th=[ 207], 99.90th=[ 347], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 150, per=24.79%, avg=40.90, stdev=27.96, samples=282 iops : min= 1, max= 37, avg= 9.57, stdev= 7.03, samples=282 write: IOPS=10, BW=43.9KiB/s (44.9kB/s)(6348KiB/144744msec); 0 zone resets clat (msec): min=8, max=296, avg=55.68, stdev=38.58 lat (msec): min=8, max=296, avg=55.68, stdev=38.58 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 82], 90.00th=[ 106], 95.00th=[ 130], | 99.00th=[ 199], 99.50th=[ 218], 99.90th=[ 275], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 136, per=25.09%, avg=43.41, stdev=26.52, samples=284 iops : min= 1, max= 34, avg=10.19, stdev= 6.66, samples=284 lat (msec) : 10=3.09%, 20=18.46%, 50=46.29%, 100=23.24%, 250=8.69% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.06%, sys=2.58%, ctx=5091, 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=180080: Fri Aug 14 21:16:36 2026 read: IOPS=10, BW=41.8KiB/s (42.8kB/s)(6028KiB/144087msec) clat (msec): min=5, max=296, avg=37.68, stdev=34.04 lat (msec): min=5, max=296, avg=37.68, stdev=34.04 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 83], 95.00th=[ 108], | 99.00th=[ 161], 99.50th=[ 188], 99.90th=[ 275], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 151, per=25.51%, avg=42.09, stdev=27.39, samples=279 iops : min= 1, max= 37, avg= 9.87, stdev= 6.87, samples=279 write: IOPS=10, BW=43.4KiB/s (44.5kB/s)(6260KiB/144087msec); 0 zone resets clat (msec): min=7, max=772, avg=55.71, stdev=42.96 lat (msec): min=7, max=772, avg=55.71, stdev=42.97 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 63], 80.00th=[ 80], 90.00th=[ 111], 95.00th=[ 138], | 99.00th=[ 197], 99.50th=[ 213], 99.90th=[ 275], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 142, per=25.00%, avg=43.24, stdev=27.48, samples=282 iops : min= 1, max= 35, avg=10.15, stdev= 6.91, samples=282 lat (msec) : 10=3.16%, 20=18.91%, 50=46.42%, 100=21.91%, 250=9.38% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.05%, sys=2.57%, ctx=5057, 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=180081: Fri Aug 14 21:16:36 2026 read: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6052KiB/143433msec) clat (msec): min=5, max=345, avg=38.19, stdev=36.20 lat (msec): min=5, max=345, avg=38.19, stdev=36.20 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 56], 90.00th=[ 83], 95.00th=[ 109], | 99.00th=[ 188], 99.50th=[ 211], 99.90th=[ 296], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 143, per=25.79%, avg=42.56, stdev=27.01, samples=278 iops : min= 1, max= 35, avg= 9.99, stdev= 6.79, samples=278 write: IOPS=10, BW=43.5KiB/s (44.5kB/s)(6236KiB/143433msec); 0 zone resets clat (msec): min=9, max=780, avg=54.86, stdev=41.24 lat (msec): min=9, max=780, avg=54.86, stdev=41.24 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 62], 80.00th=[ 80], 90.00th=[ 106], 95.00th=[ 130], | 99.00th=[ 182], 99.50th=[ 205], 99.90th=[ 321], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 134, per=24.88%, avg=43.04, stdev=26.49, samples=283 iops : min= 1, max= 33, avg=10.11, stdev= 6.64, samples=283 lat (msec) : 10=3.12%, 20=18.33%, 50=46.61%, 100=23.08%, 250=8.63% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.05%, sys=2.60%, ctx=5008, 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=166KiB/s (170kB/s), 41.0KiB/s-42.2KiB/s (42.0kB/s-43.2kB/s), io=23.4MiB (24.6MB), run=143433-144744msec WRITE: bw=174KiB/s (178kB/s), 43.4KiB/s-43.9KiB/s (44.5kB/s-44.9kB/s), io=24.6MiB (25.7MB), run=143433-144744msec 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=180124: Fri Aug 14 21:17:19 2026 read: IOPS=11, BW=190KiB/s (194kB/s)(5920KiB/31231msec) clat (usec): min=36, max=262851, avg=44439.29, stdev=28904.75 lat (usec): min=37, max=262852, avg=44441.78, stdev=28905.70 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 71], 10.00th=[ 14746], 20.00th=[ 25035], | 30.00th=[ 31065], 40.00th=[ 35914], 50.00th=[ 41157], 60.00th=[ 46400], | 70.00th=[ 52691], 80.00th=[ 62129], 90.00th=[ 73925], 95.00th=[ 92799], | 99.00th=[132645], 99.50th=[173016], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 62, max= 477, per=26.14%, avg=188.21, stdev=76.69, samples=61 iops : min= 3, max= 29, avg=11.00, stdev= 4.81, samples=61 write: IOPS=12, BW=204KiB/s (209kB/s)(6368KiB/31231msec); 0 zone resets clat (usec): min=1764, max=243765, avg=36640.53, stdev=37537.04 lat (usec): min=1766, max=243768, avg=36644.30, stdev=37537.11 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2180], 10.00th=[ 3621], 20.00th=[ 6783], | 30.00th=[ 10159], 40.00th=[ 19006], 50.00th=[ 26084], 60.00th=[ 33162], | 70.00th=[ 43779], 80.00th=[ 60031], 90.00th=[ 86508], 95.00th=[107480], | 99.00th=[179307], 99.50th=[198181], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 63, max= 506, per=26.94%, avg=203.93, stdev=84.93, samples=61 iops : min= 3, max= 31, avg=11.98, stdev= 5.37, samples=61 lat (usec) : 50=0.26%, 100=3.39%, 250=0.65% lat (msec) : 2=1.95%, 4=4.56%, 10=8.98%, 20=8.20%, 50=43.10% lat (msec) : 100=23.44%, 250=5.34%, 500=0.13% cpu : usr=0.07%, sys=6.05%, ctx=1728, 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=180125: Fri Aug 14 21:17:19 2026 read: IOPS=10, BW=173KiB/s (177kB/s)(5744KiB/33264msec) clat (usec): min=41, max=282518, avg=49025.83, stdev=36545.27 lat (usec): min=41, max=282519, avg=49026.96, stdev=36545.31 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 62], 10.00th=[ 2245], 20.00th=[ 25297], | 30.00th=[ 31851], 40.00th=[ 36963], 50.00th=[ 43779], 60.00th=[ 49546], | 70.00th=[ 58459], 80.00th=[ 69731], 90.00th=[ 86508], 95.00th=[100140], | 99.00th=[242222], 99.50th=[263193], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 31, max= 348, per=23.83%, avg=171.55, stdev=69.36, samples=65 iops : min= 1, max= 21, avg= 9.95, stdev= 4.34, samples=65 write: IOPS=12, BW=197KiB/s (201kB/s)(6544KiB/33264msec); 0 zone resets clat (usec): min=1506, max=210629, avg=37880.18, stdev=34182.86 lat (usec): min=1508, max=210630, avg=37882.49, stdev=34182.87 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 15], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 64], 90.00th=[ 87], 95.00th=[ 108], | 99.00th=[ 150], 99.50th=[ 163], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 30, max= 380, per=25.83%, avg=195.51, stdev=80.40, samples=65 iops : min= 1, max= 23, avg=11.45, stdev= 5.10, samples=65 lat (usec) : 50=0.65%, 100=3.52%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.65%, 4=4.17%, 10=7.81%, 20=9.11%, 50=40.89% lat (msec) : 100=27.21%, 250=5.47%, 500=0.26% cpu : usr=0.07%, sys=6.02%, ctx=1751, 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=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=180126: Fri Aug 14 21:17:19 2026 read: IOPS=12, BW=193KiB/s (198kB/s)(6256KiB/32367msec) clat (usec): min=43, max=256876, avg=47250.19, stdev=34476.00 lat (usec): min=44, max=256877, avg=47251.44, stdev=34476.03 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 15401], 20.00th=[ 25035], | 30.00th=[ 30278], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 54789], 80.00th=[ 65274], 90.00th=[ 84411], 95.00th=[110625], | 99.00th=[196084], 99.50th=[202376], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 62, max= 380, per=26.87%, avg=193.49, stdev=69.80, samples=63 iops : min= 3, max= 23, avg=11.33, stdev= 4.44, samples=63 write: IOPS=11, BW=186KiB/s (191kB/s)(6032KiB/32367msec); 0 zone resets clat (usec): min=1656, max=156115, avg=36610.82, stdev=32962.16 lat (usec): min=1658, max=156117, avg=36616.74, stdev=32961.95 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2769], 10.00th=[ 4359], 20.00th=[ 8291], | 30.00th=[ 12518], 40.00th=[ 20841], 50.00th=[ 26608], 60.00th=[ 35914], | 70.00th=[ 45351], 80.00th=[ 62653], 90.00th=[ 86508], 95.00th=[109577], | 99.00th=[135267], 99.50th=[145753], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 31, max= 446, per=24.30%, avg=183.94, stdev=88.48, samples=63 iops : min= 1, max= 27, avg=10.73, stdev= 5.58, samples=63 lat (usec) : 50=0.26%, 100=3.91%, 250=0.26%, 500=0.26% lat (msec) : 2=1.43%, 4=2.73%, 10=8.20%, 20=9.38%, 50=41.02% lat (msec) : 100=26.30%, 250=6.12%, 500=0.13% cpu : usr=0.06%, sys=6.01%, ctx=1833, 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=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=180127: Fri Aug 14 21:17:19 2026 read: IOPS=11, BW=188KiB/s (193kB/s)(6032KiB/32020msec) clat (usec): min=46, max=193199, avg=47023.61, stdev=30436.25 lat (usec): min=47, max=193201, avg=47025.11, stdev=30435.85 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 64], 10.00th=[ 840], 20.00th=[ 25297], | 30.00th=[ 31327], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 49021], | 70.00th=[ 57934], 80.00th=[ 69731], 90.00th=[ 84411], 95.00th=[100140], | 99.00th=[133694], 99.50th=[173016], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 31, max= 410, per=26.06%, avg=187.62, stdev=73.43, samples=63 iops : min= 1, max= 25, avg=10.97, stdev= 4.57, samples=63 write: IOPS=12, BW=195KiB/s (200kB/s)(6256KiB/32020msec); 0 zone resets clat (usec): min=1594, max=245990, avg=35902.46, stdev=36293.64 lat (usec): min=1596, max=245992, avg=35905.97, stdev=36293.27 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2573], 10.00th=[ 3359], 20.00th=[ 6456], | 30.00th=[ 9896], 40.00th=[ 16909], 50.00th=[ 24511], 60.00th=[ 31851], | 70.00th=[ 46400], 80.00th=[ 58459], 90.00th=[ 87557], 95.00th=[114820], | 99.00th=[147850], 99.50th=[158335], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 32, max= 443, per=25.90%, avg=196.10, stdev=81.87, samples=63 iops : min= 2, max= 27, avg=11.49, stdev= 5.17, samples=63 lat (usec) : 50=0.26%, 100=3.39%, 250=0.78%, 500=0.26%, 1000=0.26% lat (msec) : 2=1.82%, 4=4.56%, 10=9.24%, 20=8.20%, 50=38.54% lat (msec) : 100=26.30%, 250=6.38% cpu : usr=0.09%, sys=6.54%, ctx=1784, 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=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=720KiB/s (737kB/s), 173KiB/s-193KiB/s (177kB/s-198kB/s), io=23.4MiB (24.5MB), run=31231-33264msec WRITE: bw=758KiB/s (776kB/s), 186KiB/s-204KiB/s (191kB/s-209kB/s), io=24.6MiB (25.8MB), run=31231-33264msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180119: Fri Aug 14 21:17:30 2026 read: IOPS=8, BW=132KiB/s (135kB/s)(5920KiB/44868msec) clat (msec): min=8, max=323, avg=46.23, stdev=45.30 lat (msec): min=8, max=323, avg=46.23, stdev=45.30 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 101], 95.00th=[ 136], | 99.00th=[ 259], 99.50th=[ 321], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 350, per=24.41%, avg=129.38, stdev=77.26, samples=88 iops : min= 1, max= 21, avg= 7.33, stdev= 4.91, samples=88 write: IOPS=8, BW=142KiB/s (145kB/s)(6368KiB/44868msec); 0 zone resets clat (msec): min=17, max=298, avg=69.37, stdev=45.89 lat (msec): min=17, max=298, avg=69.37, stdev=45.89 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 29], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 64], | 70.00th=[ 78], 80.00th=[ 99], 90.00th=[ 136], 95.00th=[ 161], | 99.00th=[ 243], 99.50th=[ 292], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 383, per=25.21%, avg=140.40, stdev=77.93, samples=88 iops : min= 1, max= 23, avg= 8.01, stdev= 4.95, samples=88 lat (msec) : 10=0.78%, 20=10.29%, 50=46.48%, 100=27.47%, 250=14.06% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=2.21%, ctx=1280, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180120: Fri Aug 14 21:17:30 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5744KiB/45172msec) clat (msec): min=9, max=333, avg=47.14, stdev=41.93 lat (msec): min=9, max=333, avg=47.15, stdev=41.93 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 51], 80.00th=[ 66], 90.00th=[ 101], 95.00th=[ 133], | 99.00th=[ 186], 99.50th=[ 330], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 380, per=24.61%, avg=130.45, stdev=80.33, samples=86 iops : min= 1, max= 23, avg= 7.40, stdev= 5.12, samples=86 write: IOPS=9, BW=145KiB/s (148kB/s)(6544KiB/45172msec); 0 zone resets clat (msec): min=11, max=297, avg=68.49, stdev=44.74 lat (msec): min=11, max=297, avg=68.50, stdev=44.74 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 53], 60.00th=[ 66], | 70.00th=[ 81], 80.00th=[ 103], 90.00th=[ 131], 95.00th=[ 157], | 99.00th=[ 220], 99.50th=[ 230], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 408, per=25.86%, avg=144.03, stdev=86.19, samples=89 iops : min= 1, max= 25, avg= 8.25, stdev= 5.46, samples=89 lat (msec) : 10=0.26%, 20=10.16%, 50=46.74%, 100=26.69%, 250=15.76% lat (msec) : 500=0.39% cpu : usr=0.08%, sys=2.01%, ctx=1214, 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=180121: Fri Aug 14 21:17:30 2026 read: IOPS=8, BW=139KiB/s (142kB/s)(6256KiB/44979msec) clat (msec): min=8, max=313, avg=47.52, stdev=42.80 lat (msec): min=8, max=313, avg=47.52, stdev=42.80 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 68], 90.00th=[ 109], 95.00th=[ 144], | 99.00th=[ 203], 99.50th=[ 211], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 379, per=25.98%, avg=137.70, stdev=91.13, samples=88 iops : min= 1, max= 23, avg= 7.85, stdev= 5.80, samples=88 write: IOPS=8, BW=134KiB/s (137kB/s)(6032KiB/44979msec); 0 zone resets clat (msec): min=17, max=300, avg=69.67, stdev=44.89 lat (msec): min=17, max=300, avg=69.68, stdev=44.89 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 68], | 70.00th=[ 81], 80.00th=[ 99], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 230], 99.50th=[ 284], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 319, per=23.79%, avg=132.52, stdev=71.12, samples=87 iops : min= 1, max= 19, avg= 7.52, stdev= 4.52, samples=87 lat (msec) : 10=0.52%, 20=11.46%, 50=45.83%, 100=26.56%, 250=15.10% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=2.05%, ctx=1234, 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=180122: Fri Aug 14 21:17:30 2026 read: IOPS=8, BW=138KiB/s (142kB/s)(6032KiB/43584msec) clat (msec): min=9, max=303, avg=47.16, stdev=40.14 lat (msec): min=9, max=303, avg=47.17, stdev=40.14 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 66], 90.00th=[ 107], 95.00th=[ 136], | 99.00th=[ 215], 99.50th=[ 220], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 375, per=26.00%, avg=137.78, stdev=77.05, samples=86 iops : min= 1, max= 23, avg= 7.85, stdev= 4.94, samples=86 write: IOPS=8, BW=144KiB/s (147kB/s)(6256KiB/43584msec); 0 zone resets clat (msec): min=15, max=287, avg=65.84, stdev=40.88 lat (msec): min=15, max=287, avg=65.85, stdev=40.88 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 62], | 70.00th=[ 78], 80.00th=[ 96], 90.00th=[ 126], 95.00th=[ 144], | 99.00th=[ 218], 99.50th=[ 271], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 408, per=25.99%, avg=144.75, stdev=77.74, samples=85 iops : min= 1, max= 25, avg= 8.31, stdev= 4.98, samples=85 lat (msec) : 10=0.26%, 20=9.64%, 50=49.35%, 100=26.43%, 250=13.93% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=2.17%, ctx=1224, 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=530KiB/s (543kB/s), 127KiB/s-139KiB/s (130kB/s-142kB/s), io=23.4MiB (24.5MB), run=43584-45172msec WRITE: bw=558KiB/s (571kB/s), 134KiB/s-145KiB/s (137kB/s-148kB/s), io=24.6MiB (25.8MB), run=43584-45172msec 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=180143: Fri Aug 14 21:17:43 2026 read: IOPS=1, BW=1619KiB/s (1658kB/s)(7168KiB/4428msec) clat (msec): min=165, max=687, avg=266.40, stdev=186.78 lat (msec): min=165, max=687, avg=266.41, stdev=186.81 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 180], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 203], 60.00th=[ 215], | 70.00th=[ 215], 80.00th=[ 222], 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= 1950, max= 3953, per=61.62%, avg=2808.25, stdev=976.70, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1156KiB/s (1184kB/s)(5120KiB/4428msec); 0 zone resets clat (msec): min=215, max=996, avg=485.58, stdev=336.27 lat (msec): min=216, max=996, avg=485.91, stdev=336.02 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1950, max= 2043, per=31.56%, avg=2013.75, stdev=43.98, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=13.82%, ctx=305, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180145: Fri Aug 14 21:17:43 2026 read: IOPS=0, BW=468KiB/s (480kB/s)(2048KiB/4373msec) clat (msec): min=144, max=283, avg=214.14, stdev=98.36 lat (msec): min=144, max=283, avg=214.15, stdev=98.36 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 1620, max= 2019, per=39.93%, avg=1819.50, stdev=282.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2342KiB/s (2398kB/s)(10.0MiB/4373msec); 0 zone resets clat (msec): min=126, max=779, avg=386.53, stdev=181.88 lat (msec): min=126, max=779, avg=386.65, stdev=181.86 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 178], | 30.00th=[ 266], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 397], | 70.00th=[ 418], 80.00th=[ 464], 90.00th=[ 485], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1939, max= 3953, per=40.16%, avg=2562.29, stdev=932.77, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=25.00%, 500=66.67%, 1000=8.33% cpu : usr=0.00%, sys=14.82%, ctx=198, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180147: Fri Aug 14 21:17:43 2026 read: IOPS=1, BW=1735KiB/s (1776kB/s)(6144KiB/3542msec) clat (usec): min=587, max=332089, avg=180079.68, stdev=142937.29 lat (usec): min=588, max=332089, avg=180080.63, stdev=142937.27 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 799], | 30.00th=[ 799], 40.00th=[233833], 50.00th=[233833], 60.00th=[248513], | 70.00th=[263193], 80.00th=[263193], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2019, max= 4079, per=73.52%, avg=3350.33, stdev=1154.69, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1735KiB/s (1776kB/s)(6144KiB/3542msec); 0 zone resets clat (msec): min=176, max=1071, avg=368.30, stdev=347.49 lat (msec): min=176, max=1071, avg=368.37, stdev=347.51 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 279], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 1976, max= 3230, per=36.30%, avg=2316.00, stdev=609.90, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=41.67%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=15.36%, ctx=160, 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=180148: Fri Aug 14 21:17:43 2026 read: IOPS=1, BW=1139KiB/s (1167kB/s)(5120KiB/4494msec) clat (usec): min=394, max=270126, avg=55063.87, stdev=120230.33 lat (usec): min=395, max=270127, avg=55064.97, stdev=120230.43 clat percentiles (usec): | 1.00th=[ 396], 5.00th=[ 396], 10.00th=[ 396], 20.00th=[ 396], | 30.00th=[ 416], 40.00th=[ 416], 50.00th=[ 914], 60.00th=[ 914], | 70.00th=[ 3458], 80.00th=[ 3458], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1595KiB/s (1633kB/s)(7168KiB/4494msec); 0 zone resets clat (msec): min=139, max=1098, avg=565.12, stdev=376.46 lat (msec): min=139, max=1098, avg=565.22, stdev=376.46 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 232], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 418], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 1036], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1585, max= 2019, per=29.68%, avg=1893.80, stdev=175.35, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=16.67%, 1000=8.33% lat (msec) : 4=8.33%, 250=16.67%, 500=25.00%, 750=8.33%, 2000=16.67% cpu : usr=0.00%, sys=11.60%, ctx=182, 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=4557KiB/s (4667kB/s), 468KiB/s-1735KiB/s (480kB/s-1776kB/s), io=20.0MiB (20.0MB), run=3542-4494msec WRITE: bw=6380KiB/s (6533kB/s), 1156KiB/s-2342KiB/s (1184kB/s-2398kB/s), io=28.0MiB (29.4MB), run=3542-4494msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180141: Fri Aug 14 21:17:44 2026 read: IOPS=1, BW=1799KiB/s (1842kB/s)(7168KiB/3984msec) clat (msec): min=49, max=777, avg=244.56, stdev=255.29 lat (msec): min=49, max=777, avg=244.56, stdev=255.29 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 73], | 30.00th=[ 85], 40.00th=[ 85], 50.00th=[ 150], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 309], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1928, max= 4179, per=60.50%, avg=2525.75, stdev=1103.07, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1285KiB/s (1316kB/s)(5120KiB/3984msec); 0 zone resets clat (msec): min=155, max=785, avg=448.88, stdev=276.24 lat (msec): min=155, max=785, avg=448.99, stdev=276.21 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 600], 80.00th=[ 600], 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= 2035, max= 2043, per=34.88%, avg=2039.00, stdev= 3.27, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 50=8.33%, 100=16.67%, 250=25.00%, 500=16.67%, 750=16.67% lat (msec) : 1000=16.67% cpu : usr=0.00%, sys=4.39%, ctx=55, 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=180142: Fri Aug 14 21:17:44 2026 read: IOPS=0, BW=418KiB/s (428kB/s)(2048KiB/4905msec) clat (msec): min=168, max=669, avg=419.44, stdev=354.18 lat (msec): min=168, max=669, avg=419.44, stdev=354.18 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 2035, max= 2039, per=48.79%, avg=2037.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2088KiB/s (2138kB/s)(10.0MiB/4905msec); 0 zone resets clat (msec): min=136, max=634, avg=386.68, stdev=199.31 lat (msec): min=136, max=634, avg=386.91, stdev=199.26 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 155], | 30.00th=[ 171], 40.00th=[ 236], 50.00th=[ 393], 60.00th=[ 409], | 70.00th=[ 567], 80.00th=[ 584], 90.00th=[ 592], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1928, max= 4079, per=44.01%, avg=2572.57, stdev=977.80, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=41.67%, 500=16.67%, 750=41.67% cpu : usr=0.04%, sys=5.87%, ctx=143, 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=180144: Fri Aug 14 21:17:44 2026 read: IOPS=1, BW=1366KiB/s (1398kB/s)(6144KiB/4499msec) clat (msec): min=105, max=423, avg=277.40, stdev=124.81 lat (msec): min=105, max=423, avg=277.40, stdev=124.81 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 266], | 70.00th=[ 422], 80.00th=[ 422], 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= 2035, max= 4079, per=80.14%, avg=3345.67, stdev=1137.75, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1366KiB/s (1398kB/s)(6144KiB/4499msec); 0 zone resets clat (msec): min=109, max=664, avg=461.87, stdev=227.33 lat (msec): min=109, max=664, avg=461.98, stdev=227.32 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 567], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1928, max= 2946, per=37.33%, avg=2181.80, stdev=429.86, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.02%, sys=5.02%, ctx=141, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180146: Fri Aug 14 21:17:44 2026 read: IOPS=1, BW=1318KiB/s (1349kB/s)(5120KiB/3886msec) clat (msec): min=106, max=249, avg=179.97, stdev=59.07 lat (msec): min=106, max=249, avg=179.97, stdev=59.07 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 107], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 171], 60.00th=[ 171], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 249], 95.00th=[ 249], | 99.00th=[ 249], 99.50th=[ 249], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 1928, max= 4079, per=64.27%, avg=2683.33, stdev=1210.05, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1845KiB/s (1889kB/s)(7168KiB/3886msec); 0 zone resets clat (msec): min=126, max=744, avg=402.88, stdev=234.67 lat (msec): min=127, max=744, avg=403.47, stdev=234.39 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 132], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 418], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 592], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1370, max= 6107, per=45.87%, avg=2681.00, stdev=1933.51, samples=5 iops : min= 1, max= 5, avg= 1.80, stdev= 1.79, samples=5 lat (msec) : 250=58.33%, 500=16.67%, 750=25.00% cpu : usr=0.03%, sys=5.56%, ctx=78, 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=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=4175KiB/s (4276kB/s), 418KiB/s-1799KiB/s (428kB/s-1842kB/s), io=20.0MiB (20.0MB), run=3886-4905msec WRITE: bw=5845KiB/s (5986kB/s), 1285KiB/s-2088KiB/s (1316kB/s-2138kB/s), io=28.0MiB (29.4MB), run=3886-4905msec 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=180160: Fri Aug 14 21:17:57 2026 read: IOPS=1, BW=5389KiB/s (5519kB/s)(12.0MiB/2280msec) clat (msec): min=624, max=813, avg=738.81, stdev=100.52 lat (msec): min=624, max=813, avg=738.81, stdev=100.52 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7757, max= 8159, per=100.00%, avg=7958.00, stdev=284.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=21.50%, ctx=472, 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=180161: Fri Aug 14 21:17:57 2026 read: IOPS=0, BW=1662KiB/s (1702kB/s)(4096KiB/2464msec) clat (nsec): min=741512k, max=741512k, avg=741512010.00, stdev= 0.00 lat (nsec): min=741515k, max=741515k, avg=741514707.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7757, max= 7757, per=100.00%, avg=7757.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3325KiB/s (3404kB/s)(8192KiB/2464msec); 0 zone resets clat (msec): min=785, max=890, avg=838.19, stdev=74.21 lat (msec): min=785, max=891, avg=838.50, stdev=74.35 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 894], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 8159, max= 8159, per=76.82%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.08%, sys=3.98%, ctx=155, 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=180162: Fri Aug 14 21:17:57 2026 write: IOPS=0, BW=3983KiB/s (4079kB/s)(12.0MiB/3085msec); 0 zone resets clat (msec): min=200, max=2167, avg=996.00, stdev=1035.77 lat (msec): min=201, max=2167, avg=996.62, stdev=1035.62 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8126, max= 8126, per=76.51%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.22%, ctx=49, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180163: Fri Aug 14 21:17:57 2026 write: IOPS=1, BW=4735KiB/s (4849kB/s)(12.0MiB/2595msec); 0 zone resets clat (msec): min=661, max=978, avg=825.19, stdev=158.95 lat (msec): min=661, max=979, avg=825.44, stdev=159.02 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 8159, max= 8192, per=76.97%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=4.43%, ctx=55, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6649KiB/s (6809kB/s), 1662KiB/s-5389KiB/s (1702kB/s-5519kB/s), io=16.0MiB (16.8MB), run=2280-2464msec WRITE: bw=10.4MiB/s (10.9MB/s), 3325KiB/s-4735KiB/s (3404kB/s-4849kB/s), io=32.0MiB (33.6MB), run=2464-3085msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180156: Fri Aug 14 21:17:57 2026 read: IOPS=1, BW=7091KiB/s (7261kB/s)(12.0MiB/1733msec) clat (msec): min=293, max=959, avg=521.74, stdev=379.54 lat (msec): min=293, max=959, avg=521.74, stdev=379.54 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 313], | 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= 5490, max= 8143, per=100.00%, avg=6816.50, stdev=1875.95, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.12%, sys=9.01%, ctx=60, 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=180157: Fri Aug 14 21:17:57 2026 read: IOPS=0, BW=1241KiB/s (1271kB/s)(4096KiB/3300msec) clat (nsec): min=1067.7M, max=1067.7M, avg=1067746280.00, stdev= 0.00 lat (nsec): min=1067.7M, max=1067.7M, avg=1067748801.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1070], 5.00th=[ 1070], 10.00th=[ 1070], 20.00th=[ 1070], | 30.00th=[ 1070], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] 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=2482KiB/s (2542kB/s)(8192KiB/3300msec); 0 zone resets clat (msec): min=429, max=1507, avg=968.81, stdev=762.07 lat (msec): min=430, max=1508, avg=969.26, stdev=762.05 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 1502], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8094, max= 8094, per=81.52%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.03%, sys=4.67%, ctx=101, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180158: Fri Aug 14 21:17:57 2026 write: IOPS=0, BW=4010KiB/s (4107kB/s)(12.0MiB/3064msec); 0 zone resets clat (msec): min=443, max=1745, avg=923.16, stdev=715.30 lat (msec): min=443, max=1745, avg=923.50, stdev=715.33 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7984, max= 8192, per=81.46%, avg=8088.00, stdev=147.08, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.03%, sys=5.84%, ctx=62, 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=180159: Fri Aug 14 21:17:57 2026 write: IOPS=1, BW=4514KiB/s (4623kB/s)(12.0MiB/2722msec); 0 zone resets clat (msec): min=315, max=1592, avg=835.33, stdev=671.03 lat (msec): min=318, max=1593, avg=836.53, stdev=670.43 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 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= 5572, max= 8143, per=69.07%, avg=6857.50, stdev=1817.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=4.41%, ctx=55, 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=4965KiB/s (5084kB/s), 1241KiB/s-7091KiB/s (1271kB/s-7261kB/s), io=16.0MiB (16.8MB), run=1733-3300msec WRITE: bw=9930KiB/s (10.2MB/s), 2482KiB/s-4514KiB/s (2542kB/s-4623kB/s), io=32.0MiB (33.6MB), run=2722-3300msec