== sanity test 398b: DIO and buffer IO race ============== 02:36:55 (1786343815) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.93011 s, 17.2 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=179797: Mon Aug 10 02:38:00 2026 read: IOPS=27, BW=110KiB/s (112kB/s)(5992KiB/54597msec) clat (usec): min=47, max=257310, avg=19502.90, stdev=12246.62 lat (usec): min=48, max=257312, avg=19503.84, stdev=12246.59 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 7373], 10.00th=[ 8848], 20.00th=[ 11076], | 30.00th=[ 13173], 40.00th=[ 15401], 50.00th=[ 17957], 60.00th=[ 20317], | 70.00th=[ 22676], 80.00th=[ 26084], 90.00th=[ 31589], 95.00th=[ 38011], | 99.00th=[ 56361], 99.50th=[ 63177], 99.90th=[117965], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 48, max= 207, per=25.17%, avg=109.22, stdev=25.27, samples=108 iops : min= 12, max= 51, avg=26.89, stdev= 6.26, samples=108 write: IOPS=28, BW=115KiB/s (118kB/s)(6296KiB/54597msec); 0 zone resets clat (usec): min=825, max=82872, avg=16040.29, stdev=12905.02 lat (usec): min=825, max=82873, avg=16041.91, stdev=12904.76 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2057], 10.00th=[ 2737], 20.00th=[ 3785], | 30.00th=[ 6718], 40.00th=[10290], 50.00th=[13042], 60.00th=[16188], | 70.00th=[20841], 80.00th=[25822], 90.00th=[34341], 95.00th=[41681], | 99.00th=[53216], 99.50th=[59507], 99.90th=[72877], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 39, max= 215, per=25.25%, avg=114.65, stdev=31.32, samples=108 iops : min= 9, max= 53, avg=28.25, stdev= 7.86, samples=108 lat (usec) : 50=0.07%, 100=0.65%, 250=0.78%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=2.12%, 4=8.66%, 10=14.62%, 20=36.49%, 50=34.54% lat (msec) : 100=1.79%, 250=0.03%, 500=0.03% cpu : usr=0.10%, sys=19.24%, ctx=8425, 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=179798: Mon Aug 10 02:38:00 2026 read: IOPS=26, BW=107KiB/s (110kB/s)(5940KiB/55257msec) clat (usec): min=51, max=298327, avg=19937.63, stdev=13159.33 lat (usec): min=52, max=298330, avg=19938.48, stdev=13159.34 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 7635], 10.00th=[ 9241], 20.00th=[ 11076], | 30.00th=[ 13173], 40.00th=[ 15270], 50.00th=[ 17957], 60.00th=[ 20055], | 70.00th=[ 22938], 80.00th=[ 26608], 90.00th=[ 33162], 95.00th=[ 40109], | 99.00th=[ 62653], 99.50th=[ 67634], 99.90th=[ 94897], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 13, max= 183, per=24.60%, avg=106.77, stdev=25.72, samples=109 iops : min= 3, max= 45, avg=26.28, stdev= 6.44, samples=109 write: IOPS=28, BW=115KiB/s (118kB/s)(6348KiB/55257msec); 0 zone resets clat (usec): min=860, max=80662, avg=16085.22, stdev=12164.29 lat (usec): min=861, max=80663, avg=16086.17, stdev=12164.30 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 2089], 10.00th=[ 2900], 20.00th=[ 4555], | 30.00th=[ 8356], 40.00th=[11338], 50.00th=[13698], 60.00th=[16450], | 70.00th=[20317], 80.00th=[25035], 90.00th=[32900], 95.00th=[39060], | 99.00th=[54264], 99.50th=[61080], 99.90th=[73925], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 46, max= 198, per=24.90%, avg=113.06, stdev=28.91, samples=109 iops : min= 11, max= 49, avg=27.86, stdev= 7.30, samples=109 lat (usec) : 100=0.49%, 250=0.42%, 500=0.03%, 750=0.03%, 1000=0.20% lat (msec) : 2=2.18%, 4=7.06%, 10=14.68%, 20=39.36%, 50=33.72% lat (msec) : 100=1.79%, 500=0.03% cpu : usr=0.10%, sys=19.27%, ctx=8716, 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=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=179799: Mon Aug 10 02:38:00 2026 read: IOPS=28, BW=116KiB/s (118kB/s)(6028KiB/52166msec) clat (usec): min=37, max=104168, avg=19056.11, stdev=10165.12 lat (usec): min=37, max=104169, avg=19057.03, stdev=10165.10 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 7308], 10.00th=[ 9110], 20.00th=[ 10945], | 30.00th=[ 13042], 40.00th=[ 15008], 50.00th=[ 17433], 60.00th=[ 19792], | 70.00th=[ 22676], 80.00th=[ 26084], 90.00th=[ 31589], 95.00th=[ 37487], | 99.00th=[ 50594], 99.50th=[ 56361], 99.90th=[100140], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 46, max= 192, per=26.60%, avg=115.44, stdev=26.40, samples=103 iops : min= 11, max= 48, avg=28.46, stdev= 6.59, samples=103 write: IOPS=30, BW=120KiB/s (123kB/s)(6260KiB/52166msec); 0 zone resets clat (usec): min=894, max=340356, avg=14931.05, stdev=14401.21 lat (usec): min=895, max=340358, avg=14932.12, stdev=14401.33 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1975], 10.00th=[ 2638], 20.00th=[ 3556], | 30.00th=[ 5735], 40.00th=[ 9372], 50.00th=[ 12387], 60.00th=[ 15008], | 70.00th=[ 19006], 80.00th=[ 23725], 90.00th=[ 31589], 95.00th=[ 37487], | 99.00th=[ 50594], 99.50th=[ 55837], 99.90th=[ 85459], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 59, max= 200, per=26.39%, avg=119.81, stdev=29.48, samples=103 iops : min= 14, max= 50, avg=29.55, stdev= 7.39, samples=103 lat (usec) : 50=0.07%, 100=0.68%, 250=0.55%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=2.41%, 4=9.31%, 10=15.14%, 20=38.48%, 50=32.00% lat (msec) : 100=1.01%, 250=0.07%, 500=0.03% cpu : usr=0.10%, sys=20.04%, ctx=8353, 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=179800: Mon Aug 10 02:38:00 2026 read: IOPS=28, BW=115KiB/s (118kB/s)(6052KiB/52507msec) clat (usec): min=33, max=79429, avg=19035.05, stdev=10374.07 lat (usec): min=34, max=79430, avg=19035.98, stdev=10374.13 clat percentiles (usec): | 1.00th=[ 81], 5.00th=[ 7242], 10.00th=[ 8979], 20.00th=[11076], | 30.00th=[12780], 40.00th=[14746], 50.00th=[17433], 60.00th=[20055], | 70.00th=[22676], 80.00th=[25822], 90.00th=[31327], 95.00th=[36963], | 99.00th=[53216], 99.50th=[66847], 99.90th=[77071], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 26, max= 175, per=26.57%, avg=115.33, stdev=24.61, samples=104 iops : min= 6, max= 43, avg=28.43, stdev= 6.15, samples=104 write: IOPS=29, BW=119KiB/s (122kB/s)(6236KiB/52507msec); 0 zone resets clat (usec): min=776, max=293714, avg=15116.43, stdev=14032.08 lat (usec): min=777, max=293717, avg=15117.59, stdev=14032.01 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1926], 10.00th=[ 2606], 20.00th=[ 3425], | 30.00th=[ 5473], 40.00th=[ 9634], 50.00th=[ 12256], 60.00th=[ 15664], | 70.00th=[ 19530], 80.00th=[ 24511], 90.00th=[ 31851], 95.00th=[ 38011], | 99.00th=[ 54264], 99.50th=[ 58459], 99.90th=[ 76022], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 46, max= 200, per=26.15%, avg=118.71, stdev=28.91, samples=104 iops : min= 11, max= 50, avg=29.27, stdev= 7.30, samples=104 lat (usec) : 50=0.16%, 100=0.65%, 250=0.75%, 1000=0.29% lat (msec) : 2=2.47%, 4=9.47%, 10=14.06%, 20=37.53%, 50=33.11% lat (msec) : 100=1.46%, 500=0.03% cpu : usr=0.11%, sys=19.64%, ctx=8302, 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=435KiB/s (445kB/s), 107KiB/s-116KiB/s (110kB/s-118kB/s), io=23.4MiB (24.6MB), run=52166-55257msec WRITE: bw=455KiB/s (466kB/s), 115KiB/s-120KiB/s (118kB/s-123kB/s), io=24.6MiB (25.7MB), run=52166-55257msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179792: Mon Aug 10 02:38:10 2026 read: IOPS=22, BW=91.4KiB/s (93.6kB/s)(5992KiB/65582msec) clat (msec): min=2, max=323, avg=17.64, stdev=15.76 lat (msec): min=2, max=323, avg=17.64, stdev=15.76 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 37], 95.00th=[ 47], | 99.00th=[ 70], 99.50th=[ 75], 99.90th=[ 99], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 264, per=24.97%, avg=90.90, stdev=53.56, samples=130 iops : min= 7, max= 66, avg=22.37, stdev=13.49, samples=130 write: IOPS=24, BW=96.0KiB/s (98.3kB/s)(6296KiB/65582msec); 0 zone resets clat (msec): min=5, max=108, avg=24.77, stdev=15.25 lat (msec): min=5, max=108, avg=24.77, stdev=15.25 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 75], 99.50th=[ 84], 99.90th=[ 97], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 6, max= 248, per=25.08%, avg=95.55, stdev=50.57, samples=130 iops : min= 1, max= 62, avg=23.53, stdev=12.75, samples=130 lat (msec) : 4=0.29%, 10=22.33%, 20=37.60%, 50=34.24%, 100=5.47% lat (msec) : 250=0.03%, 500=0.03% cpu : usr=0.10%, sys=9.78%, ctx=5658, 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=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=179793: Mon Aug 10 02:38:10 2026 read: IOPS=22, BW=90.1KiB/s (92.3kB/s)(5940KiB/65892msec) clat (msec): min=2, max=327, avg=17.70, stdev=16.00 lat (msec): min=2, max=327, avg=17.70, stdev=16.00 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 39], 95.00th=[ 47], | 99.00th=[ 67], 99.50th=[ 72], 99.90th=[ 100], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 6, max= 272, per=24.72%, avg=89.99, stdev=53.97, samples=131 iops : min= 1, max= 68, avg=22.15, stdev=13.58, samples=131 write: IOPS=24, BW=96.3KiB/s (98.7kB/s)(6348KiB/65892msec); 0 zone resets clat (msec): min=5, max=130, avg=24.85, stdev=15.55 lat (msec): min=5, max=130, avg=24.85, stdev=15.55 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 74], 99.50th=[ 85], 99.90th=[ 111], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 32, max= 256, per=25.18%, avg=95.95, stdev=51.73, samples=131 iops : min= 8, max= 64, avg=23.63, stdev=13.06, samples=131 lat (msec) : 4=0.46%, 10=23.11%, 20=36.59%, 50=34.28%, 100=5.47% lat (msec) : 250=0.07%, 500=0.03% cpu : usr=0.08%, sys=9.71%, ctx=5570, 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=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=179794: Mon Aug 10 02:38:10 2026 read: IOPS=22, BW=91.5KiB/s (93.7kB/s)(6028KiB/65888msec) clat (usec): min=3421, max=99761, avg=17717.73, stdev=13989.59 lat (usec): min=3422, max=99761, avg=17718.71, stdev=13989.59 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 27], 90.00th=[ 37], 95.00th=[ 48], | 99.00th=[ 69], 99.50th=[ 77], 99.90th=[ 86], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 13, max= 312, per=25.06%, avg=91.21, stdev=54.51, samples=131 iops : min= 3, max= 78, avg=22.45, stdev=13.75, samples=131 write: IOPS=23, BW=95.0KiB/s (97.3kB/s)(6260KiB/65888msec); 0 zone resets clat (msec): min=4, max=336, avg=24.93, stdev=17.72 lat (msec): min=4, max=336, avg=24.93, stdev=17.72 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 57], | 99.00th=[ 78], 99.50th=[ 91], 99.90th=[ 136], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 20, max= 248, per=24.87%, avg=94.74, stdev=51.99, samples=131 iops : min= 5, max= 62, avg=23.34, stdev=13.08, samples=131 lat (msec) : 4=0.55%, 10=22.85%, 20=36.69%, 50=33.85%, 100=5.92% lat (msec) : 250=0.10%, 500=0.03% cpu : usr=0.08%, sys=9.65%, ctx=5624, 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=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=179795: Mon Aug 10 02:38:10 2026 read: IOPS=23, BW=92.3KiB/s (94.5kB/s)(6052KiB/65573msec) clat (usec): min=2660, max=99001, avg=17951.63, stdev=14109.91 lat (usec): min=2661, max=99002, avg=17952.47, stdev=14109.89 clat percentiles (usec): | 1.00th=[ 4015], 5.00th=[ 5211], 10.00th=[ 5997], 20.00th=[ 7635], | 30.00th=[ 9110], 40.00th=[10814], 50.00th=[12780], 60.00th=[15401], | 70.00th=[19268], 80.00th=[26608], 90.00th=[38536], 95.00th=[47973], | 99.00th=[67634], 99.50th=[74974], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 13, max= 296, per=25.23%, avg=91.85, stdev=52.66, samples=130 iops : min= 3, max= 74, avg=22.61, stdev=13.26, samples=130 write: IOPS=23, BW=95.1KiB/s (97.4kB/s)(6236KiB/65573msec); 0 zone resets clat (msec): min=5, max=336, avg=24.53, stdev=17.12 lat (msec): min=5, max=336, avg=24.53, stdev=17.12 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 35], 90.00th=[ 45], 95.00th=[ 54], | 99.00th=[ 74], 99.50th=[ 83], 99.90th=[ 138], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 27, max= 288, per=24.84%, avg=94.65, stdev=52.04, samples=130 iops : min= 6, max= 72, avg=23.31, stdev=13.11, samples=130 lat (msec) : 4=0.52%, 10=22.62%, 20=37.24%, 50=33.76%, 100=5.73% lat (msec) : 250=0.10%, 500=0.03% cpu : usr=0.10%, sys=9.64%, ctx=5680, 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=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=364KiB/s (373kB/s), 90.1KiB/s-92.3KiB/s (92.3kB/s-94.5kB/s), io=23.4MiB (24.6MB), run=65573-65892msec WRITE: bw=382KiB/s (391kB/s), 95.0KiB/s-96.3KiB/s (97.3kB/s-98.7kB/s), io=24.6MiB (25.7MB), run=65573-65892msec 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=179829: Mon Aug 10 02:38:31 2026 read: IOPS=25, BW=403KiB/s (413kB/s)(5920KiB/14694msec) clat (usec): min=37, max=58635, avg=20082.80, stdev=10867.32 lat (usec): min=38, max=58636, avg=20083.61, stdev=10867.34 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 101], 10.00th=[ 8029], 20.00th=[12649], | 30.00th=[14746], 40.00th=[16450], 50.00th=[18482], 60.00th=[21365], | 70.00th=[23987], 80.00th=[28443], 90.00th=[33424], 95.00th=[39060], | 99.00th=[53216], 99.50th=[56361], 99.90th=[58459], 99.95th=[58459], | 99.99th=[58459] bw ( KiB/s): min= 224, max= 634, per=26.14%, avg=404.34, stdev=96.13, samples=29 iops : min= 14, max= 39, avg=24.76, stdev= 6.00, samples=29 write: IOPS=27, BW=433KiB/s (444kB/s)(6368KiB/14694msec); 0 zone resets clat (usec): min=1678, max=73356, avg=18185.43, stdev=13253.08 lat (usec): min=1679, max=73358, avg=18186.88, stdev=13253.09 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 3589], 10.00th=[ 4293], 20.00th=[ 5735], | 30.00th=[ 9372], 40.00th=[12125], 50.00th=[14091], 60.00th=[17957], | 70.00th=[22676], 80.00th=[29492], 90.00th=[36439], 95.00th=[45351], | 99.00th=[57934], 99.50th=[63177], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 223, max= 608, per=26.65%, avg=433.90, stdev=97.34, samples=29 iops : min= 13, max= 38, avg=26.62, stdev= 6.30, samples=29 lat (usec) : 50=0.13%, 100=2.21%, 250=1.43%, 500=0.13% lat (msec) : 2=0.52%, 4=3.39%, 10=14.45%, 20=36.72%, 50=38.80% lat (msec) : 100=2.21% cpu : usr=0.07%, sys=21.37%, ctx=2348, 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=179830: Mon Aug 10 02:38:31 2026 read: IOPS=23, BW=374KiB/s (383kB/s)(5744KiB/15347msec) clat (usec): min=58, max=82411, avg=22152.19, stdev=12560.59 lat (usec): min=59, max=82412, avg=22153.04, stdev=12560.63 clat percentiles (usec): | 1.00th=[ 94], 5.00th=[ 178], 10.00th=[ 9634], 20.00th=[12649], | 30.00th=[15270], 40.00th=[17433], 50.00th=[20317], 60.00th=[23200], | 70.00th=[26346], 80.00th=[30278], 90.00th=[38011], 95.00th=[45876], | 99.00th=[65799], 99.50th=[74974], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 158, max= 573, per=24.18%, avg=374.07, stdev=102.38, samples=30 iops : min= 9, max= 35, avg=22.87, stdev= 6.43, samples=30 write: IOPS=26, BW=426KiB/s (437kB/s)(6544KiB/15347msec); 0 zone resets clat (usec): min=1164, max=95036, avg=17810.57, stdev=14402.37 lat (usec): min=1166, max=95038, avg=17812.00, stdev=14402.40 clat percentiles (usec): | 1.00th=[ 2147], 5.00th=[ 3294], 10.00th=[ 4359], 20.00th=[ 5604], | 30.00th=[ 8291], 40.00th=[11207], 50.00th=[14222], 60.00th=[17171], | 70.00th=[21103], 80.00th=[26608], 90.00th=[37487], 95.00th=[45876], | 99.00th=[62653], 99.50th=[77071], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 255, max= 736, per=26.19%, avg=426.43, stdev=109.26, samples=30 iops : min= 15, max= 46, avg=26.13, stdev= 6.87, samples=30 lat (usec) : 100=0.52%, 250=1.82%, 1000=0.13% lat (msec) : 2=0.52%, 4=3.39%, 10=17.58%, 20=34.90%, 50=37.63% lat (msec) : 100=3.52% cpu : usr=0.08%, sys=21.22%, ctx=2506, 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=179831: Mon Aug 10 02:38:31 2026 read: IOPS=25, BW=404KiB/s (414kB/s)(6256KiB/15476msec) clat (usec): min=47, max=104490, avg=21921.46, stdev=13430.74 lat (usec): min=48, max=104490, avg=21923.47, stdev=13431.97 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 111], 10.00th=[ 9634], 20.00th=[ 13042], | 30.00th=[ 15401], 40.00th=[ 17957], 50.00th=[ 20579], 60.00th=[ 22938], | 70.00th=[ 25560], 80.00th=[ 29492], 90.00th=[ 36439], 95.00th=[ 44827], | 99.00th=[ 72877], 99.50th=[ 88605], 99.90th=[104334], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 223, max= 544, per=26.10%, avg=403.77, stdev=100.88, samples=30 iops : min= 13, max= 34, avg=24.73, stdev= 6.36, samples=30 write: IOPS=24, BW=390KiB/s (399kB/s)(6032KiB/15476msec); 0 zone resets clat (usec): min=1411, max=89031, avg=18135.69, stdev=13827.07 lat (usec): min=1413, max=89032, avg=18137.29, stdev=13827.30 clat percentiles (usec): | 1.00th=[ 2180], 5.00th=[ 3458], 10.00th=[ 4228], 20.00th=[ 6194], | 30.00th=[ 9896], 40.00th=[11731], 50.00th=[14484], 60.00th=[17695], | 70.00th=[21627], 80.00th=[27132], 90.00th=[37487], 95.00th=[49546], | 99.00th=[60031], 99.50th=[76022], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 159, max= 637, per=23.54%, avg=383.30, stdev=121.00, samples=30 iops : min= 9, max= 39, avg=23.43, stdev= 7.56, samples=30 lat (usec) : 50=0.13%, 100=1.95%, 250=1.82%, 500=0.13% lat (msec) : 2=0.52%, 4=4.30%, 10=12.11%, 20=36.20%, 50=39.32% lat (msec) : 100=3.39%, 250=0.13% cpu : usr=0.09%, sys=20.65%, ctx=2444, 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=179832: Mon Aug 10 02:38:31 2026 read: IOPS=24, BW=393KiB/s (403kB/s)(6032KiB/15340msec) clat (usec): min=35, max=77204, avg=21514.14, stdev=11748.73 lat (usec): min=35, max=77205, avg=21515.31, stdev=11748.76 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 98], 10.00th=[ 9372], 20.00th=[12911], | 30.00th=[15139], 40.00th=[17957], 50.00th=[20841], 60.00th=[24249], | 70.00th=[26608], 80.00th=[30016], 90.00th=[35390], 95.00th=[41157], | 99.00th=[57934], 99.50th=[66847], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 244, max= 541, per=25.28%, avg=391.07, stdev=85.46, samples=30 iops : min= 15, max= 33, avg=23.93, stdev= 5.40, samples=30 write: IOPS=25, BW=408KiB/s (418kB/s)(6256KiB/15340msec); 0 zone resets clat (usec): min=1097, max=67839, avg=18225.97, stdev=13461.18 lat (usec): min=1099, max=67842, avg=18228.25, stdev=13462.77 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 2999], 10.00th=[ 3916], 20.00th=[ 5407], | 30.00th=[ 9241], 40.00th=[11863], 50.00th=[14746], 60.00th=[18744], | 70.00th=[23725], 80.00th=[29230], 90.00th=[38536], 95.00th=[44827], | 99.00th=[57410], 99.50th=[62129], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 223, max= 637, per=24.91%, avg=405.60, stdev=90.34, samples=30 iops : min= 13, max= 39, avg=24.83, stdev= 5.72, samples=30 lat (usec) : 50=0.39%, 100=2.21%, 250=1.30% lat (msec) : 2=1.43%, 4=3.78%, 10=12.89%, 20=33.20%, 50=42.58% lat (msec) : 100=2.21% cpu : usr=0.08%, sys=20.17%, ctx=2481, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1548KiB/s (1585kB/s), 374KiB/s-404KiB/s (383kB/s-414kB/s), io=23.4MiB (24.5MB), run=14694-15476msec WRITE: bw=1628KiB/s (1667kB/s), 390KiB/s-433KiB/s (399kB/s-444kB/s), io=24.6MiB (25.8MB), run=14694-15476msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179824: Mon Aug 10 02:38:35 2026 read: IOPS=19, BW=305KiB/s (312kB/s)(5920KiB/19420msec) clat (usec): min=3991, max=71442, avg=20870.31, stdev=13894.75 lat (usec): min=3991, max=71443, avg=20871.14, stdev=13894.73 clat percentiles (usec): | 1.00th=[ 4555], 5.00th=[ 6915], 10.00th=[ 8455], 20.00th=[10814], | 30.00th=[12649], 40.00th=[14091], 50.00th=[16319], 60.00th=[18744], | 70.00th=[22676], 80.00th=[27657], 90.00th=[41681], 95.00th=[52167], | 99.00th=[67634], 99.50th=[69731], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 95, max= 672, per=24.75%, avg=299.45, stdev=143.36, samples=38 iops : min= 5, max= 42, avg=18.13, stdev= 9.09, samples=38 write: IOPS=20, BW=328KiB/s (336kB/s)(6368KiB/19420msec); 0 zone resets clat (msec): min=6, max=121, avg=29.26, stdev=17.67 lat (msec): min=6, max=121, avg=29.26, stdev=17.67 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 44], 90.00th=[ 56], 95.00th=[ 63], | 99.00th=[ 88], 99.50th=[ 91], 99.90th=[ 122], 99.95th=[ 122], | 99.99th=[ 122] bw ( KiB/s): min= 159, max= 672, per=25.65%, avg=326.58, stdev=126.98, samples=38 iops : min= 9, max= 42, avg=19.84, stdev= 8.12, samples=38 lat (msec) : 4=0.13%, 10=9.77%, 20=40.36%, 50=40.10%, 100=9.51% lat (msec) : 250=0.13% cpu : usr=0.05%, sys=9.16%, ctx=1561, 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=179825: Mon Aug 10 02:38:35 2026 read: IOPS=18, BW=290KiB/s (297kB/s)(5744KiB/19783msec) clat (usec): min=3459, max=89221, avg=22112.87, stdev=16664.49 lat (usec): min=3460, max=89222, avg=22113.84, stdev=16664.35 clat percentiles (usec): | 1.00th=[ 3687], 5.00th=[ 6325], 10.00th=[ 7242], 20.00th=[10028], | 30.00th=[12256], 40.00th=[13698], 50.00th=[16057], 60.00th=[18744], | 70.00th=[23200], 80.00th=[32900], 90.00th=[49021], 95.00th=[59507], | 99.00th=[72877], 99.50th=[83362], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 95, max= 704, per=23.66%, avg=286.28, stdev=152.26, samples=39 iops : min= 5, max= 44, avg=17.31, stdev= 9.74, samples=39 write: IOPS=20, BW=331KiB/s (339kB/s)(6544KiB/19783msec); 0 zone resets clat (msec): min=5, max=116, avg=28.90, stdev=18.64 lat (msec): min=5, max=116, avg=28.91, stdev=18.64 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 66], | 99.00th=[ 87], 99.50th=[ 108], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 158, max= 800, per=25.58%, avg=325.67, stdev=153.84, samples=39 iops : min= 9, max= 50, avg=19.79, stdev= 9.84, samples=39 lat (msec) : 4=0.52%, 10=12.24%, 20=39.06%, 50=36.59%, 100=11.20% lat (msec) : 250=0.39% cpu : usr=0.08%, sys=8.59%, ctx=1575, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179826: Mon Aug 10 02:38:35 2026 read: IOPS=20, BW=321KiB/s (328kB/s)(6256KiB/19519msec) clat (usec): min=4557, max=76939, avg=21438.32, stdev=14829.74 lat (usec): min=4557, max=76940, avg=21440.07, stdev=14829.08 clat percentiles (usec): | 1.00th=[ 5604], 5.00th=[ 6849], 10.00th=[ 8356], 20.00th=[10945], | 30.00th=[12649], 40.00th=[14877], 50.00th=[16319], 60.00th=[18220], | 70.00th=[22152], 80.00th=[30016], 90.00th=[43779], 95.00th=[57410], | 99.00th=[68682], 99.50th=[70779], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 96, max= 672, per=26.31%, avg=318.37, stdev=140.18, samples=38 iops : min= 6, max= 42, avg=19.32, stdev= 8.94, samples=38 write: IOPS=19, BW=309KiB/s (316kB/s)(6032KiB/19519msec); 0 zone resets clat (msec): min=7, max=113, avg=29.33, stdev=17.71 lat (msec): min=7, max=113, avg=29.33, stdev=17.71 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 67], | 99.00th=[ 88], 99.50th=[ 93], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 159, max= 672, per=23.72%, avg=301.89, stdev=121.01, samples=38 iops : min= 9, max= 42, avg=18.29, stdev= 7.74, samples=38 lat (msec) : 10=9.51%, 20=42.71%, 50=37.11%, 100=10.55%, 250=0.13% cpu : usr=0.07%, sys=8.95%, ctx=1499, 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=179827: Mon Aug 10 02:38:35 2026 read: IOPS=19, BW=316KiB/s (324kB/s)(6032KiB/19073msec) clat (usec): min=3735, max=84646, avg=21255.37, stdev=14205.49 lat (usec): min=3735, max=84646, avg=21257.07, stdev=14204.94 clat percentiles (usec): | 1.00th=[ 6063], 5.00th=[ 7111], 10.00th=[ 9241], 20.00th=[11076], | 30.00th=[12649], 40.00th=[14615], 50.00th=[16909], 60.00th=[18744], | 70.00th=[21890], 80.00th=[29230], 90.00th=[44303], 95.00th=[53740], | 99.00th=[68682], 99.50th=[72877], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 159, max= 625, per=25.58%, avg=309.57, stdev=127.36, samples=37 iops : min= 9, max= 39, avg=18.78, stdev= 8.15, samples=37 write: IOPS=20, BW=328KiB/s (336kB/s)(6256KiB/19073msec); 0 zone resets clat (msec): min=6, max=122, avg=28.14, stdev=16.98 lat (msec): min=6, max=122, avg=28.14, stdev=16.98 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 39], 90.00th=[ 50], 95.00th=[ 61], | 99.00th=[ 96], 99.50th=[ 114], 99.90th=[ 123], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 160, max= 704, per=25.44%, avg=323.86, stdev=125.76, samples=37 iops : min= 10, max= 44, avg=19.68, stdev= 8.05, samples=37 lat (msec) : 4=0.13%, 10=8.07%, 20=43.75%, 50=39.84%, 100=7.81% lat (msec) : 250=0.39% cpu : usr=0.05%, sys=9.69%, ctx=1561, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1211KiB/s (1240kB/s), 290KiB/s-321KiB/s (297kB/s-328kB/s), io=23.4MiB (24.5MB), run=19073-19783msec WRITE: bw=1274KiB/s (1304kB/s), 309KiB/s-331KiB/s (316kB/s-339kB/s), io=24.6MiB (25.8MB), run=19073-19783msec 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=179840: Mon Aug 10 02:38:43 2026 read: IOPS=2, BW=2370KiB/s (2426kB/s)(7168KiB/3025msec) clat (usec): min=526, max=337779, avg=140539.55, stdev=108101.94 lat (usec): min=527, max=337780, avg=140540.88, stdev=108101.87 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 72877], | 30.00th=[ 81265], 40.00th=[ 81265], 50.00th=[132645], 60.00th=[162530], | 70.00th=[162530], 80.00th=[196084], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 1996, max= 5818, per=55.96%, avg=3281.67, stdev=2196.60, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1693KiB/s (1733kB/s)(5120KiB/3025msec); 0 zone resets clat (msec): min=223, max=712, avg=399.50, stdev=195.47 lat (msec): min=224, max=712, avg=399.57, stdev=195.46 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1996, max= 4087, per=32.94%, avg=2704.67, stdev=1197.26, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=35.28%, ctx=771, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179841: Mon Aug 10 02:38:43 2026 read: IOPS=0, BW=586KiB/s (601kB/s)(2048KiB/3492msec) clat (msec): min=317, max=713, avg=515.57, stdev=279.70 lat (msec): min=317, max=713, avg=515.57, stdev=279.70 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 718], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1996, max= 2043, per=34.44%, avg=2019.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2932KiB/s (3003kB/s)(10.0MiB/3492msec); 0 zone resets clat (msec): min=108, max=539, avg=243.80, stdev=165.06 lat (msec): min=108, max=542, avg=244.18, stdev=165.65 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 128], | 30.00th=[ 133], 40.00th=[ 138], 50.00th=[ 144], 60.00th=[ 146], | 70.00th=[ 249], 80.00th=[ 347], 90.00th=[ 514], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1996, max= 4096, per=43.08%, avg=3536.75, stdev=1028.08, samples=4 iops : min= 1, max= 4, avg= 2.75, stdev= 1.26, samples=4 lat (msec) : 250=58.33%, 500=16.67%, 750=25.00% cpu : usr=0.03%, sys=39.59%, ctx=561, 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=179843: Mon Aug 10 02:38:43 2026 read: IOPS=1, BW=1983KiB/s (2030kB/s)(6144KiB/3099msec) clat (usec): min=457, max=234242, avg=86215.75, stdev=99865.26 lat (usec): min=459, max=234242, avg=86216.62, stdev=99864.89 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[ 545], | 30.00th=[ 545], 40.00th=[ 652], 50.00th=[ 652], 60.00th=[141558], | 70.00th=[141558], 80.00th=[141558], 90.00th=[233833], 95.00th=[233833], | 99.00th=[233833], 99.50th=[233833], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 3992, max= 6144, per=86.43%, avg=5068.00, stdev=1521.69, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1983KiB/s (2030kB/s)(6144KiB/3099msec); 0 zone resets clat (msec): min=164, max=872, avg=402.30, stdev=283.37 lat (msec): min=164, max=873, avg=402.39, stdev=283.46 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 409], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1996, max= 3992, per=30.69%, avg=2519.75, stdev=981.78, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 250=50.00%, 500=8.33%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=34.31%, ctx=393, 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=179845: Mon Aug 10 02:38:43 2026 read: IOPS=1, BW=1879KiB/s (1924kB/s)(5120KiB/2725msec) clat (usec): min=452, max=239934, avg=132357.31, stdev=88142.23 lat (usec): min=454, max=239935, avg=132358.47, stdev=88142.30 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[ 453], | 30.00th=[120062], 40.00th=[120062], 50.00th=[125305], 60.00th=[125305], | 70.00th=[175113], 80.00th=[175113], 90.00th=[240124], 95.00th=[240124], | 99.00th=[240124], 99.50th=[240124], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 7984, max= 7984, per=100.00%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2630KiB/s (2694kB/s)(7168KiB/2725msec); 0 zone resets clat (msec): min=133, max=744, avg=292.30, stdev=212.27 lat (msec): min=133, max=744, avg=292.37, stdev=212.28 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 148], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 201], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 338], 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= 3716, max= 4087, per=48.18%, avg=3955.33, stdev=207.62, samples=3 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=66.67%, 500=16.67%, 750=8.33% cpu : usr=0.07%, sys=37.19%, ctx=177, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5865KiB/s (6006kB/s), 586KiB/s-2370KiB/s (601kB/s-2426kB/s), io=20.0MiB (20.0MB), run=2725-3492msec WRITE: bw=8211KiB/s (8408kB/s), 1693KiB/s-2932KiB/s (1733kB/s-3003kB/s), io=28.0MiB (29.4MB), run=2725-3492msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179842: Mon Aug 10 02:38:43 2026 read: IOPS=2, BW=2979KiB/s (3051kB/s)(7168KiB/2406msec) clat (msec): min=60, max=290, avg=158.17, stdev=93.93 lat (msec): min=60, max=290, avg=158.17, stdev=93.93 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 61], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 161], 60.00th=[ 218], | 70.00th=[ 218], 80.00th=[ 239], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 4063, max= 5595, per=85.24%, avg=4829.00, stdev=1083.29, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2128KiB/s (2179kB/s)(5120KiB/2406msec); 0 zone resets clat (msec): min=111, max=560, avg=256.20, stdev=181.76 lat (msec): min=111, max=560, avg=256.28, stdev=181.74 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 186], 60.00th=[ 186], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 2035, max= 5988, per=50.58%, avg=4011.50, stdev=2795.19, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=25.00%, 250=50.00%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=14.47%, ctx=119, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179844: Mon Aug 10 02:38:43 2026 read: IOPS=0, BW=567KiB/s (580kB/s)(2048KiB/3615msec) clat (msec): min=79, max=767, avg=423.70, stdev=486.40 lat (msec): min=79, max=767, avg=423.70, stdev=486.40 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 81], 40.00th=[ 81], 50.00th=[ 81], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 2019, max= 2035, per=35.78%, avg=2027.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2833KiB/s (2901kB/s)(10.0MiB/3615msec); 0 zone resets clat (msec): min=74, max=527, avg=270.50, stdev=155.89 lat (msec): min=74, max=527, avg=270.60, stdev=155.87 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 86], | 30.00th=[ 95], 40.00th=[ 226], 50.00th=[ 257], 60.00th=[ 296], | 70.00th=[ 300], 80.00th=[ 414], 90.00th=[ 430], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 1969, max= 8192, per=45.99%, avg=3647.80, stdev=2693.60, samples=5 iops : min= 1, max= 8, avg= 2.80, stdev= 3.03, samples=5 lat (msec) : 100=33.33%, 250=8.33%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=20.37%, ctx=143, 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=179846: Mon Aug 10 02:38:43 2026 read: IOPS=1, BW=1790KiB/s (1833kB/s)(6144KiB/3432msec) clat (msec): min=54, max=376, avg=217.54, stdev=136.92 lat (msec): min=54, max=376, avg=217.55, stdev=136.92 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 245], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 3938, max= 3992, per=69.99%, avg=3965.00, stdev=38.18, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1790KiB/s (1833kB/s)(6144KiB/3432msec); 0 zone resets clat (msec): min=103, max=824, avg=349.33, stdev=283.78 lat (msec): min=103, max=824, avg=349.40, stdev=283.79 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 129], | 30.00th=[ 129], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 284], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1996, max= 4063, per=31.88%, avg=2528.25, stdev=1023.29, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=10.64%, ctx=116, 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=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=179847: Mon Aug 10 02:38:43 2026 read: IOPS=1, BW=1455KiB/s (1490kB/s)(5120KiB/3518msec) clat (msec): min=54, max=472, avg=206.86, stdev=182.59 lat (msec): min=54, max=472, avg=206.87, stdev=182.59 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 55], | 30.00th=[ 82], 40.00th=[ 82], 50.00th=[ 105], 60.00th=[ 105], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 3938, max= 4039, per=70.41%, avg=3988.50, stdev=71.42, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2038KiB/s (2086kB/s)(7168KiB/3518msec); 0 zone resets clat (msec): min=80, max=740, avg=333.04, stdev=211.38 lat (msec): min=80, max=740, avg=333.12, stdev=211.39 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 209], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 266], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 422], 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= 2031, max= 3992, per=33.87%, avg=2686.00, stdev=1131.03, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=25.00%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=17.32%, ctx=166, 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=5665KiB/s (5801kB/s), 567KiB/s-2979KiB/s (580kB/s-3051kB/s), io=20.0MiB (20.0MB), run=2406-3615msec WRITE: bw=7931KiB/s (8122kB/s), 1790KiB/s-2833KiB/s (1833kB/s-2901kB/s), io=28.0MiB (29.4MB), run=2406-3615msec 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=179853: Mon Aug 10 02:38:51 2026 read: IOPS=1, BW=6464KiB/s (6619kB/s)(12.0MiB/1901msec) clat (msec): min=263, max=1026, avg=595.53, stdev=391.13 lat (msec): min=263, max=1026, avg=595.53, stdev=391.13 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 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= 7641, max= 8175, per=91.76%, avg=7908.00, stdev=377.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=13.68%, ctx=82, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179854: Mon Aug 10 02:38:51 2026 read: IOPS=0, BW=2972KiB/s (3044kB/s)(4096KiB/1378msec) clat (nsec): min=83765k, max=83765k, avg=83764619.00, stdev= 0.00 lat (nsec): min=83767k, max=83767k, avg=83767013.00, stdev= 0.00 clat percentiles (usec): | 1.00th=[83362], 5.00th=[83362], 10.00th=[83362], 20.00th=[83362], | 30.00th=[83362], 40.00th=[83362], 50.00th=[83362], 60.00th=[83362], | 70.00th=[83362], 80.00th=[83362], 90.00th=[83362], 95.00th=[83362], | 99.00th=[83362], 99.50th=[83362], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 7713, max= 7713, per=89.50%, avg=7713.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5945KiB/s (6088kB/s)(8192KiB/1378msec); 0 zone resets clat (msec): min=315, max=946, avg=630.95, stdev=446.68 lat (msec): min=315, max=947, avg=631.25, stdev=446.62 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7713, max= 7713, per=49.36%, avg=7713.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=15.03%, ctx=67, 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=179855: Mon Aug 10 02:38:51 2026 write: IOPS=1, BW=5860KiB/s (6000kB/s)(12.0MiB/2097msec); 0 zone resets clat (msec): min=327, max=859, avg=662.14, stdev=291.70 lat (msec): min=327, max=859, avg=662.57, stdev=291.70 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 8175, max= 8192, per=52.37%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=10.59%, ctx=56, 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=179856: Mon Aug 10 02:38:51 2026 write: IOPS=1, BW=6793KiB/s (6956kB/s)(12.0MiB/1809msec); 0 zone resets clat (msec): min=183, max=753, avg=553.43, stdev=320.95 lat (msec): min=183, max=753, avg=553.78, stdev=320.87 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 184], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8175, max= 8175, per=52.32%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=13.11%, ctx=63, 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=8619KiB/s (8825kB/s), 2972KiB/s-6464KiB/s (3044kB/s-6619kB/s), io=16.0MiB (16.8MB), run=1378-1901msec WRITE: bw=15.3MiB/s (16.0MB/s), 5860KiB/s-6793KiB/s (6000kB/s-6956kB/s), io=32.0MiB (33.6MB), run=1378-2097msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179858: Mon Aug 10 02:38:52 2026 read: IOPS=2, BW=9015KiB/s (9232kB/s)(12.0MiB/1363msec) clat (msec): min=370, max=493, avg=436.58, stdev=61.57 lat (msec): min=370, max=493, avg=436.58, stdev=61.57 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 5720, max= 8192, per=98.72%, avg=6956.00, stdev=1747.97, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=42.95%, ctx=1716, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179859: Mon Aug 10 02:38:52 2026 read: IOPS=0, BW=1762KiB/s (1804kB/s)(4096KiB/2325msec) clat (nsec): min=427111k, max=427111k, avg=427111080.00, stdev= 0.00 lat (nsec): min=427114k, max=427114k, avg=427113790.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 5527, max= 5527, per=78.44%, avg=5527.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3523KiB/s (3608kB/s)(8192KiB/2325msec); 0 zone resets clat (msec): min=467, max=1407, avg=937.50, stdev=664.81 lat (msec): min=467, max=1407, avg=937.83, stdev=664.73 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 1401], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8192, max= 8192, per=58.13%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=15.49%, ctx=731, 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=179860: Mon Aug 10 02:38:52 2026 write: IOPS=1, BW=5444KiB/s (5575kB/s)(12.0MiB/2257msec); 0 zone resets clat (msec): min=347, max=1211, avg=727.71, stdev=441.45 lat (msec): min=347, max=1211, avg=728.17, stdev=441.35 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 8159, max= 8192, per=58.01%, avg=8175.50, stdev=23.33, 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=0.13%, sys=13.74%, ctx=75, 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=179861: Mon Aug 10 02:38:52 2026 write: IOPS=1, BW=5303KiB/s (5431kB/s)(12.0MiB/2317msec); 0 zone resets clat (msec): min=265, max=1233, avg=748.43, stdev=483.91 lat (msec): min=265, max=1233, avg=748.80, stdev=483.63 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8159, max= 8192, per=58.01%, avg=8175.50, stdev=23.33, 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=0.04%, sys=14.16%, ctx=71, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7047KiB/s (7216kB/s), 1762KiB/s-9015KiB/s (1804kB/s-9232kB/s), io=16.0MiB (16.8MB), run=1363-2325msec WRITE: bw=13.8MiB/s (14.4MB/s), 3523KiB/s-5444KiB/s (3608kB/s-5575kB/s), io=32.0MiB (33.6MB), run=2257-2325msec