== sanity test 398b: DIO and buffer IO race ============== 14:42:42 (1767728562) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.9014 s, 17.3 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=149889: Tue Jan 6 14:43:40 2026 read: IOPS=30, BW=120KiB/s (123kB/s)(5992KiB/49828msec) clat (usec): min=115, max=719912, avg=16756.36, stdev=21239.92 lat (usec): min=115, max=719913, avg=16757.12, stdev=21239.93 clat percentiles (usec): | 1.00th=[ 155], 5.00th=[ 371], 10.00th=[ 6521], 20.00th=[ 8717], | 30.00th=[ 10290], 40.00th=[ 11863], 50.00th=[ 14222], 60.00th=[ 16909], | 70.00th=[ 19792], 80.00th=[ 23725], 90.00th=[ 28967], 95.00th=[ 33817], | 99.00th=[ 52167], 99.50th=[ 66323], 99.90th=[147850], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 223, per=24.85%, avg=119.53, stdev=34.43, samples=99 iops : min= 1, max= 55, avg=29.45, stdev= 8.63, samples=99 write: IOPS=31, BW=126KiB/s (129kB/s)(6296KiB/49828msec); 0 zone resets clat (usec): min=655, max=121604, avg=15575.13, stdev=13957.21 lat (usec): min=656, max=121606, avg=15576.16, stdev=13957.29 clat percentiles (usec): | 1.00th=[ 963], 5.00th=[ 1418], 10.00th=[ 1991], 20.00th=[ 2933], | 30.00th=[ 5145], 40.00th=[ 9634], 50.00th=[ 12649], 60.00th=[ 15664], | 70.00th=[ 20055], 80.00th=[ 25297], 90.00th=[ 33817], 95.00th=[ 42730], | 99.00th=[ 58459], 99.50th=[ 71828], 99.90th=[112722], 99.95th=[121111], | 99.99th=[121111] bw ( KiB/s): min= 32, max= 270, per=25.18%, avg=126.93, stdev=39.67, samples=98 iops : min= 8, max= 67, avg=31.31, stdev= 9.91, samples=98 lat (usec) : 250=1.30%, 500=1.73%, 750=0.59%, 1000=0.52% lat (msec) : 2=4.65%, 4=8.20%, 10=18.13%, 20=35.12%, 50=28.03% lat (msec) : 100=1.60%, 250=0.10%, 750=0.03% cpu : usr=0.12%, sys=17.79%, ctx=7745, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149891: Tue Jan 6 14:43:40 2026 read: IOPS=30, BW=122KiB/s (125kB/s)(5940KiB/48546msec) clat (usec): min=84, max=129026, avg=16020.50, stdev=10151.03 lat (usec): min=84, max=129026, avg=16021.36, stdev=10151.11 clat percentiles (usec): | 1.00th=[ 147], 5.00th=[ 371], 10.00th=[ 7046], 20.00th=[ 9110], | 30.00th=[ 10552], 40.00th=[ 12125], 50.00th=[ 13829], 60.00th=[ 16188], | 70.00th=[ 19530], 80.00th=[ 22676], 90.00th=[ 27919], 95.00th=[ 32375], | 99.00th=[ 50070], 99.50th=[ 58983], 99.90th=[ 73925], 99.95th=[129500], | 99.99th=[129500] bw ( KiB/s): min= 7, max= 199, per=25.43%, avg=122.33, stdev=35.94, samples=96 iops : min= 1, max= 49, avg=30.16, stdev= 9.01, samples=96 write: IOPS=32, BW=131KiB/s (134kB/s)(6348KiB/48546msec); 0 zone resets clat (usec): min=677, max=720638, avg=15470.64, stdev=22503.92 lat (usec): min=677, max=720639, avg=15471.84, stdev=22503.83 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 1352], 10.00th=[ 1958], 20.00th=[ 2900], | 30.00th=[ 4424], 40.00th=[ 8848], 50.00th=[ 12125], 60.00th=[ 15139], | 70.00th=[ 19006], 80.00th=[ 24773], 90.00th=[ 33162], 95.00th=[ 42206], | 99.00th=[ 59507], 99.50th=[ 70779], 99.90th=[128451], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 55, max= 272, per=26.13%, avg=131.71, stdev=37.10, samples=95 iops : min= 13, max= 68, avg=32.51, stdev= 9.27, samples=95 lat (usec) : 100=0.07%, 250=1.27%, 500=1.53%, 750=0.36%, 1000=0.78% lat (msec) : 2=4.46%, 4=9.31%, 10=17.02%, 20=37.50%, 50=26.11% lat (msec) : 100=1.46%, 250=0.10%, 750=0.03% cpu : usr=0.13%, sys=18.17%, ctx=7682, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149892: Tue Jan 6 14:43:40 2026 read: IOPS=30, BW=122KiB/s (124kB/s)(6028KiB/49593msec) clat (usec): min=82, max=109132, avg=16071.75, stdev=10799.41 lat (usec): min=83, max=109133, avg=16072.55, stdev=10799.41 clat percentiles (usec): | 1.00th=[ 161], 5.00th=[ 359], 10.00th=[ 7111], 20.00th=[ 9110], | 30.00th=[ 10552], 40.00th=[ 11863], 50.00th=[ 13829], 60.00th=[ 16319], | 70.00th=[ 19006], 80.00th=[ 22414], 90.00th=[ 27657], 95.00th=[ 32637], | 99.00th=[ 49546], 99.50th=[ 79168], 99.90th=[103285], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 8, max= 223, per=25.38%, avg=122.06, stdev=36.84, samples=97 iops : min= 2, max= 55, avg=30.08, stdev= 9.19, samples=97 write: IOPS=31, BW=126KiB/s (129kB/s)(6260KiB/49593msec); 0 zone resets clat (usec): min=742, max=747205, avg=16089.57, stdev=23119.26 lat (usec): min=743, max=747207, avg=16090.73, stdev=23119.20 clat percentiles (usec): | 1.00th=[ 922], 5.00th=[ 1303], 10.00th=[ 1909], 20.00th=[ 2966], | 30.00th=[ 4686], 40.00th=[ 9110], 50.00th=[ 12911], 60.00th=[ 16581], | 70.00th=[ 20317], 80.00th=[ 26346], 90.00th=[ 34341], 95.00th=[ 41157], | 99.00th=[ 59507], 99.50th=[ 71828], 99.90th=[127402], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 24, max= 239, per=25.08%, avg=126.41, stdev=32.22, samples=97 iops : min= 6, max= 59, avg=31.18, stdev= 8.07, samples=97 lat (usec) : 100=0.07%, 250=0.98%, 500=2.12%, 750=0.10%, 1000=1.07% lat (msec) : 2=4.52%, 4=8.59%, 10=16.93%, 20=36.65%, 50=27.57% lat (msec) : 100=1.24%, 250=0.13%, 750=0.03% cpu : usr=0.12%, sys=17.67%, ctx=7694, 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=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=149895: Tue Jan 6 14:43:40 2026 read: IOPS=31, BW=124KiB/s (127kB/s)(6052KiB/48734msec) clat (usec): min=82, max=678650, avg=16580.65, stdev=19974.97 lat (usec): min=82, max=678651, avg=16581.41, stdev=19974.98 clat percentiles (usec): | 1.00th=[ 159], 5.00th=[ 326], 10.00th=[ 6718], 20.00th=[ 8848], | 30.00th=[ 10290], 40.00th=[ 11994], 50.00th=[ 13960], 60.00th=[ 16188], | 70.00th=[ 19530], 80.00th=[ 23200], 90.00th=[ 29230], 95.00th=[ 33817], | 99.00th=[ 52691], 99.50th=[ 61080], 99.90th=[ 83362], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 31, max= 200, per=26.07%, avg=125.40, stdev=30.48, samples=96 iops : min= 7, max= 50, avg=30.93, stdev= 7.60, samples=96 write: IOPS=31, BW=128KiB/s (131kB/s)(6236KiB/48734msec); 0 zone resets clat (usec): min=663, max=223544, avg=15041.89, stdev=14479.54 lat (usec): min=664, max=223546, avg=15044.01, stdev=14479.62 clat percentiles (usec): | 1.00th=[ 881], 5.00th=[ 1336], 10.00th=[ 1844], 20.00th=[ 2802], | 30.00th=[ 4359], 40.00th=[ 8586], 50.00th=[ 12256], 60.00th=[ 15664], | 70.00th=[ 19792], 80.00th=[ 24511], 90.00th=[ 32375], 95.00th=[ 40633], | 99.00th=[ 59507], 99.50th=[ 67634], 99.90th=[141558], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 29, max= 198, per=25.34%, avg=127.70, stdev=34.42, samples=97 iops : min= 7, max= 49, avg=31.51, stdev= 8.60, samples=97 lat (usec) : 100=0.03%, 250=1.66%, 500=1.56%, 750=0.36%, 1000=0.88% lat (msec) : 2=4.65%, 4=9.11%, 10=17.61%, 20=35.32%, 50=27.12% lat (msec) : 100=1.60%, 250=0.07%, 750=0.03% cpu : usr=0.14%, sys=18.30%, ctx=7741, 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=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=482KiB/s (493kB/s), 120KiB/s-124KiB/s (123kB/s-127kB/s), io=23.4MiB (24.6MB), run=48546-49828msec WRITE: bw=505KiB/s (517kB/s), 126KiB/s-131KiB/s (129kB/s-134kB/s), io=24.6MiB (25.7MB), run=48546-49828msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149888: Tue Jan 6 14:44:25 2026 read: IOPS=15, BW=63.1KiB/s (64.6kB/s)(5992KiB/95000msec) clat (msec): min=3, max=728, avg=14.57, stdev=22.01 lat (msec): min=3, max=728, avg=14.57, stdev=22.01 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 11], | 70.00th=[ 15], 80.00th=[ 21], 90.00th=[ 30], 95.00th=[ 37], | 99.00th=[ 64], 99.50th=[ 78], 99.90th=[ 104], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 167, per=25.04%, avg=63.11, stdev=33.47, samples=188 iops : min= 1, max= 41, avg=15.41, stdev= 8.44, samples=188 write: IOPS=16, BW=66.3KiB/s (67.9kB/s)(6296KiB/95000msec); 0 zone resets clat (msec): min=16, max=244, avg=46.36, stdev=18.89 lat (msec): min=16, max=244, avg=46.36, stdev=18.89 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 35], 40.00th=[ 39], 50.00th=[ 43], 60.00th=[ 47], | 70.00th=[ 53], 80.00th=[ 59], 90.00th=[ 70], 95.00th=[ 79], | 99.00th=[ 110], 99.50th=[ 122], 99.90th=[ 184], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 7, max= 128, per=25.10%, avg=66.26, stdev=22.70, samples=188 iops : min= 1, max= 32, avg=16.20, stdev= 5.74, samples=188 lat (msec) : 4=0.33%, 10=26.14%, 20=12.04%, 50=42.81%, 100=17.74% lat (msec) : 250=0.91%, 750=0.03% cpu : usr=0.09%, sys=3.92%, ctx=5449, 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=149890: Tue Jan 6 14:44:25 2026 read: IOPS=15, BW=62.6KiB/s (64.1kB/s)(5940KiB/94920msec) clat (msec): min=3, max=685, avg=14.03, stdev=21.08 lat (msec): min=3, max=685, avg=14.04, stdev=21.08 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 11], | 70.00th=[ 14], 80.00th=[ 20], 90.00th=[ 28], 95.00th=[ 37], | 99.00th=[ 58], 99.50th=[ 75], 99.90th=[ 161], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 144, per=24.86%, avg=62.64, stdev=31.42, samples=188 iops : min= 1, max= 36, avg=15.29, stdev= 7.92, samples=188 write: IOPS=16, BW=66.9KiB/s (68.5kB/s)(6348KiB/94920msec); 0 zone resets clat (msec): min=17, max=245, avg=46.55, stdev=19.20 lat (msec): min=17, max=245, avg=46.55, stdev=19.19 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 36], 40.00th=[ 40], 50.00th=[ 43], 60.00th=[ 47], | 70.00th=[ 53], 80.00th=[ 59], 90.00th=[ 71], 95.00th=[ 81], | 99.00th=[ 111], 99.50th=[ 126], 99.90th=[ 153], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 15, max= 126, per=25.36%, avg=66.94, stdev=23.72, samples=188 iops : min= 3, max= 31, avg=16.37, stdev= 6.01, samples=188 lat (msec) : 4=0.29%, 10=26.01%, 20=13.41%, 50=41.67%, 100=17.68% lat (msec) : 250=0.91%, 750=0.03% cpu : usr=0.08%, sys=3.97%, ctx=5421, 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=149893: Tue Jan 6 14:44:25 2026 read: IOPS=15, BW=63.5KiB/s (65.1kB/s)(6028KiB/94887msec) clat (msec): min=3, max=229, avg=14.27, stdev=13.95 lat (msec): min=3, max=229, avg=14.27, stdev=13.95 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 15], 80.00th=[ 21], 90.00th=[ 28], 95.00th=[ 37], | 99.00th=[ 61], 99.50th=[ 85], 99.90th=[ 161], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 7, max= 160, per=25.25%, avg=63.62, stdev=31.78, samples=188 iops : min= 1, max= 40, avg=15.54, stdev= 8.03, samples=188 write: IOPS=16, BW=65.0KiB/s (67.6kB/s)(6260KiB/94887msec); 0 zone resets clat (msec): min=17, max=711, avg=46.76, stdev=25.50 lat (msec): min=17, max=711, avg=46.76, stdev=25.50 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 35], 40.00th=[ 39], 50.00th=[ 43], 60.00th=[ 47], | 70.00th=[ 53], 80.00th=[ 59], 90.00th=[ 70], 95.00th=[ 84], | 99.00th=[ 112], 99.50th=[ 132], 99.90th=[ 184], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 120, per=25.00%, avg=66.01, stdev=24.43, samples=188 iops : min= 1, max= 30, avg=16.13, stdev= 6.19, samples=188 lat (msec) : 4=0.39%, 10=25.52%, 20=13.48%, 50=42.81%, 100=16.47% lat (msec) : 250=1.30%, 750=0.03% cpu : usr=0.07%, sys=3.96%, ctx=5442, 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=149894: Tue Jan 6 14:44:25 2026 read: IOPS=16, BW=64.2KiB/s (65.7kB/s)(6052KiB/94308msec) clat (msec): min=3, max=152, avg=14.34, stdev=12.86 lat (msec): min=3, max=152, avg=14.34, stdev=12.86 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 15], 80.00th=[ 21], 90.00th=[ 29], 95.00th=[ 39], | 99.00th=[ 64], 99.50th=[ 83], 99.90th=[ 134], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 7, max= 176, per=25.62%, avg=64.57, stdev=32.27, samples=185 iops : min= 1, max= 44, avg=15.78, stdev= 8.12, samples=185 write: IOPS=16, BW=66.1KiB/s (67.7kB/s)(6236KiB/94308msec); 0 zone resets clat (msec): min=16, max=713, avg=46.44, stdev=25.19 lat (msec): min=16, max=713, avg=46.44, stdev=25.19 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 32], | 30.00th=[ 35], 40.00th=[ 39], 50.00th=[ 43], 60.00th=[ 47], | 70.00th=[ 52], 80.00th=[ 58], 90.00th=[ 69], 95.00th=[ 81], | 99.00th=[ 115], 99.50th=[ 133], 99.90th=[ 180], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 23, max= 128, per=25.05%, avg=66.12, stdev=22.92, samples=186 iops : min= 5, max= 32, avg=16.17, stdev= 5.81, samples=186 lat (msec) : 4=0.23%, 10=25.36%, 20=13.77%, 50=42.77%, 100=16.86% lat (msec) : 250=0.98%, 750=0.03% cpu : usr=0.08%, sys=4.10%, ctx=5421, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=253KiB/s (259kB/s), 62.6KiB/s-64.2KiB/s (64.1kB/s-65.7kB/s), io=23.4MiB (24.6MB), run=94308-95000msec WRITE: bw=265KiB/s (271kB/s), 65.0KiB/s-66.9KiB/s (67.6kB/s-68.5kB/s), io=24.6MiB (25.7MB), run=94308-95000msec 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=149929: Tue Jan 6 14:44:42 2026 read: IOPS=30, BW=481KiB/s (493kB/s)(5920KiB/12306msec) clat (usec): min=97, max=91585, avg=16841.17, stdev=11396.45 lat (usec): min=97, max=91586, avg=16842.13, stdev=11396.69 clat percentiles (usec): | 1.00th=[ 137], 5.00th=[ 277], 10.00th=[ 371], 20.00th=[ 9372], | 30.00th=[11207], 40.00th=[13304], 50.00th=[15795], 60.00th=[18482], | 70.00th=[21627], 80.00th=[24249], 90.00th=[29754], 95.00th=[36439], | 99.00th=[60031], 99.50th=[68682], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 283, max= 669, per=25.76%, avg=479.33, stdev=104.22, samples=24 iops : min= 17, max= 41, avg=29.29, stdev= 6.43, samples=24 write: IOPS=32, BW=517KiB/s (530kB/s)(6368KiB/12306msec); 0 zone resets clat (usec): min=1014, max=91266, avg=15169.71, stdev=13208.05 lat (usec): min=1016, max=91267, avg=15173.03, stdev=13207.03 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 2147], 10.00th=[ 2835], 20.00th=[ 3687], | 30.00th=[ 4752], 40.00th=[ 7570], 50.00th=[12256], 60.00th=[15533], | 70.00th=[20055], 80.00th=[24511], 90.00th=[32637], 95.00th=[41681], | 99.00th=[57410], 99.50th=[58983], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 255, max= 734, per=26.47%, avg=518.29, stdev=126.57, samples=24 iops : min= 15, max= 45, avg=31.75, stdev= 7.90, samples=24 lat (usec) : 100=0.13%, 250=1.43%, 500=4.04%, 750=0.39%, 1000=0.52% lat (msec) : 2=2.21%, 4=10.16%, 10=15.76%, 20=32.55%, 50=30.99% lat (msec) : 100=1.82% cpu : usr=0.15%, sys=20.26%, ctx=1947, 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=149931: Tue Jan 6 14:44:42 2026 read: IOPS=27, BW=447KiB/s (457kB/s)(5744KiB/12864msec) clat (usec): min=106, max=83809, avg=17690.92, stdev=11802.19 lat (usec): min=107, max=83810, avg=17691.65, stdev=11802.20 clat percentiles (usec): | 1.00th=[ 120], 5.00th=[ 251], 10.00th=[ 506], 20.00th=[10421], | 30.00th=[11863], 40.00th=[13829], 50.00th=[15664], 60.00th=[17957], | 70.00th=[21627], 80.00th=[25560], 90.00th=[32637], 95.00th=[38011], | 99.00th=[48497], 99.50th=[81265], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 53, max= 633, per=23.69%, avg=440.84, stdev=129.49, samples=25 iops : min= 3, max= 39, avg=26.92, stdev= 8.07, samples=25 write: IOPS=31, BW=509KiB/s (521kB/s)(6544KiB/12864msec); 0 zone resets clat (usec): min=948, max=81941, avg=15603.26, stdev=13973.07 lat (usec): min=949, max=81943, avg=15608.93, stdev=13988.18 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 2073], 10.00th=[ 2638], 20.00th=[ 3949], | 30.00th=[ 5211], 40.00th=[ 8455], 50.00th=[12518], 60.00th=[15270], | 70.00th=[19530], 80.00th=[25297], 90.00th=[35390], 95.00th=[40633], | 99.00th=[64226], 99.50th=[69731], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 265, max= 798, per=25.37%, avg=496.76, stdev=140.18, samples=25 iops : min= 16, max= 49, avg=30.40, stdev= 8.84, samples=25 lat (usec) : 250=2.21%, 500=2.34%, 750=0.65%, 1000=0.39% lat (msec) : 2=2.34%, 4=8.20%, 10=15.89%, 20=36.46%, 50=29.43% lat (msec) : 100=2.08% cpu : usr=0.06%, sys=19.82%, ctx=1999, 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=149932: Tue Jan 6 14:44:42 2026 read: IOPS=31, BW=507KiB/s (519kB/s)(6256KiB/12344msec) clat (usec): min=93, max=64112, avg=16679.59, stdev=11146.55 lat (usec): min=94, max=64113, avg=16680.38, stdev=11146.52 clat percentiles (usec): | 1.00th=[ 108], 5.00th=[ 215], 10.00th=[ 375], 20.00th=[ 9241], | 30.00th=[11207], 40.00th=[13042], 50.00th=[15008], 60.00th=[17957], | 70.00th=[20579], 80.00th=[25035], 90.00th=[31327], 95.00th=[35914], | 99.00th=[55313], 99.50th=[61604], 99.90th=[64226], 99.95th=[64226], | 99.99th=[64226] bw ( KiB/s): min= 342, max= 669, per=27.32%, avg=508.42, stdev=96.92, samples=24 iops : min= 21, max= 41, avg=31.12, stdev= 6.00, samples=24 write: IOPS=30, BW=489KiB/s (500kB/s)(6032KiB/12344msec); 0 zone resets clat (usec): min=1379, max=83855, avg=15175.57, stdev=13580.96 lat (usec): min=1379, max=83856, avg=15177.40, stdev=13580.99 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1942], 10.00th=[ 2671], 20.00th=[ 4113], | 30.00th=[ 5276], 40.00th=[ 8848], 50.00th=[11863], 60.00th=[14615], | 70.00th=[19006], 80.00th=[24511], 90.00th=[32900], 95.00th=[41681], | 99.00th=[72877], 99.50th=[74974], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 254, max= 728, per=24.56%, avg=480.92, stdev=113.81, samples=24 iops : min= 15, max= 45, avg=29.42, stdev= 7.22, samples=24 lat (usec) : 100=0.26%, 250=2.47%, 500=3.52%, 750=0.52%, 1000=0.26% lat (msec) : 2=2.99%, 4=6.51%, 10=16.41%, 20=37.50%, 50=28.13% lat (msec) : 100=1.43% cpu : usr=0.14%, sys=19.92%, ctx=1970, 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=149933: Tue Jan 6 14:44:42 2026 read: IOPS=29, BW=479KiB/s (491kB/s)(6032KiB/12584msec) clat (usec): min=112, max=63137, avg=17248.11, stdev=10961.59 lat (usec): min=112, max=63138, avg=17248.87, stdev=10961.61 clat percentiles (usec): | 1.00th=[ 137], 5.00th=[ 235], 10.00th=[ 424], 20.00th=[ 9241], | 30.00th=[11469], 40.00th=[13566], 50.00th=[16909], 60.00th=[19268], | 70.00th=[22414], 80.00th=[25297], 90.00th=[30802], 95.00th=[35390], | 99.00th=[47449], 99.50th=[50594], 99.90th=[63177], 99.95th=[63177], | 99.99th=[63177] bw ( KiB/s): min= 237, max= 670, per=24.87%, avg=462.83, stdev=121.54, samples=24 iops : min= 14, max= 41, avg=28.25, stdev= 7.51, samples=24 write: IOPS=31, BW=497KiB/s (509kB/s)(6256KiB/12584msec); 0 zone resets clat (usec): min=968, max=108276, avg=15148.12, stdev=14606.12 lat (usec): min=969, max=108277, avg=15149.65, stdev=14606.15 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 2147], 10.00th=[ 2933], 20.00th=[ 4047], | 30.00th=[ 5407], 40.00th=[ 8291], 50.00th=[ 11600], 60.00th=[ 13960], | 70.00th=[ 17957], 80.00th=[ 23725], 90.00th=[ 32637], 95.00th=[ 40109], | 99.00th=[ 81265], 99.50th=[100140], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 255, max= 764, per=24.90%, avg=487.62, stdev=126.15, samples=24 iops : min= 15, max= 47, avg=29.83, stdev= 7.89, samples=24 lat (usec) : 250=2.47%, 500=3.26%, 750=0.65%, 1000=0.39% lat (msec) : 2=2.21%, 4=7.94%, 10=17.58%, 20=33.46%, 50=30.47% lat (msec) : 100=1.30%, 250=0.26% cpu : usr=0.15%, sys=20.26%, ctx=2070, 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=1862KiB/s (1907kB/s), 447KiB/s-507KiB/s (457kB/s-519kB/s), io=23.4MiB (24.5MB), run=12306-12864msec WRITE: bw=1959KiB/s (2006kB/s), 489KiB/s-517KiB/s (500kB/s-530kB/s), io=24.6MiB (25.8MB), run=12306-12864msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149926: Tue Jan 6 14:44:53 2026 read: IOPS=15, BW=255KiB/s (261kB/s)(5920KiB/23186msec) clat (msec): min=3, max=105, avg=14.98, stdev=15.36 lat (msec): min=3, max=105, avg=14.98, stdev=15.36 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 11], | 70.00th=[ 15], 80.00th=[ 21], 90.00th=[ 33], 95.00th=[ 45], | 99.00th=[ 81], 99.50th=[ 101], 99.90th=[ 106], 99.95th=[ 106], | 99.99th=[ 106] bw ( KiB/s): min= 63, max= 640, per=24.96%, avg=255.85, stdev=146.89, samples=46 iops : min= 3, max= 40, avg=15.50, stdev= 9.33, samples=46 write: IOPS=17, BW=275KiB/s (281kB/s)(6368KiB/23186msec); 0 zone resets clat (msec): min=17, max=199, avg=43.99, stdev=24.05 lat (msec): min=17, max=199, avg=44.00, stdev=24.05 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 41], | 70.00th=[ 48], 80.00th=[ 57], 90.00th=[ 79], 95.00th=[ 90], | 99.00th=[ 142], 99.50th=[ 146], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 95, max= 512, per=25.48%, avg=274.72, stdev=134.65, samples=46 iops : min= 5, max= 32, avg=16.70, stdev= 8.58, samples=46 lat (msec) : 4=0.39%, 10=26.43%, 20=12.24%, 50=44.79%, 100=14.06% lat (msec) : 250=2.08% cpu : usr=0.07%, sys=4.90%, ctx=1489, 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=149927: Tue Jan 6 14:44:53 2026 read: IOPS=15, BW=246KiB/s (252kB/s)(5744KiB/23355msec) clat (msec): min=3, max=137, avg=15.22, stdev=16.64 lat (msec): min=3, max=137, avg=15.22, stdev=16.64 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 11], | 70.00th=[ 14], 80.00th=[ 20], 90.00th=[ 36], 95.00th=[ 51], | 99.00th=[ 81], 99.50th=[ 96], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 53, max= 672, per=24.00%, avg=245.98, stdev=146.19, samples=46 iops : min= 3, max= 42, avg=14.89, stdev= 9.27, samples=46 write: IOPS=17, BW=280KiB/s (287kB/s)(6544KiB/23355msec); 0 zone resets clat (msec): min=16, max=182, avg=43.67, stdev=23.53 lat (msec): min=16, max=182, avg=43.67, stdev=23.53 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 49], 80.00th=[ 60], 90.00th=[ 77], 95.00th=[ 90], | 99.00th=[ 127], 99.50th=[ 136], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 95, max= 512, per=25.96%, avg=279.83, stdev=132.18, samples=46 iops : min= 5, max= 32, avg=17.00, stdev= 8.47, samples=46 lat (msec) : 4=0.13%, 10=26.43%, 20=13.15%, 50=43.10%, 100=15.49% lat (msec) : 250=1.69% cpu : usr=0.06%, sys=4.87%, ctx=1463, 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=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=149928: Tue Jan 6 14:44:53 2026 read: IOPS=17, BW=275KiB/s (282kB/s)(6256KiB/22711msec) clat (msec): min=3, max=110, avg=14.72, stdev=15.37 lat (msec): min=3, max=110, avg=14.72, stdev=15.37 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 11], | 70.00th=[ 14], 80.00th=[ 18], 90.00th=[ 35], 95.00th=[ 49], | 99.00th=[ 74], 99.50th=[ 105], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 63, max= 864, per=26.99%, avg=276.67, stdev=177.18, samples=45 iops : min= 3, max= 54, avg=16.82, stdev=11.28, samples=45 write: IOPS=16, BW=266KiB/s (272kB/s)(6032KiB/22711msec); 0 zone resets clat (msec): min=17, max=153, avg=44.75, stdev=23.11 lat (msec): min=17, max=153, avg=44.75, stdev=23.11 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 51], 80.00th=[ 62], 90.00th=[ 79], 95.00th=[ 94], | 99.00th=[ 126], 99.50th=[ 136], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 95, max= 480, per=24.66%, avg=265.87, stdev=121.99, samples=45 iops : min= 5, max= 30, avg=16.13, stdev= 7.82, samples=45 lat (msec) : 4=0.52%, 10=28.26%, 20=14.71%, 50=39.32%, 100=15.23% lat (msec) : 250=1.95% cpu : usr=0.07%, sys=5.22%, ctx=1492, 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=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=149930: Tue Jan 6 14:44:53 2026 read: IOPS=16, BW=264KiB/s (270kB/s)(6032KiB/22844msec) clat (msec): min=4, max=136, avg=15.02, stdev=16.30 lat (msec): min=4, max=136, avg=15.02, stdev=16.30 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 11], | 70.00th=[ 14], 80.00th=[ 19], 90.00th=[ 33], 95.00th=[ 52], | 99.00th=[ 91], 99.50th=[ 110], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 63, max= 608, per=25.62%, avg=262.58, stdev=139.28, samples=45 iops : min= 3, max= 38, avg=15.93, stdev= 8.81, samples=45 write: IOPS=17, BW=274KiB/s (280kB/s)(6256KiB/22844msec); 0 zone resets clat (msec): min=18, max=126, avg=43.63, stdev=21.49 lat (msec): min=18, max=126, avg=43.63, stdev=21.49 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 34], 50.00th=[ 37], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 58], 90.00th=[ 75], 95.00th=[ 94], | 99.00th=[ 116], 99.50th=[ 123], 99.90th=[ 127], 99.95th=[ 127], | 99.99th=[ 127] bw ( KiB/s): min= 96, max= 544, per=25.45%, avg=274.40, stdev=126.41, samples=45 iops : min= 6, max= 34, avg=16.67, stdev= 8.11, samples=45 lat (msec) : 10=27.86%, 20=12.89%, 50=43.36%, 100=13.80%, 250=2.08% cpu : usr=0.05%, sys=5.08%, ctx=1451, 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=1026KiB/s (1050kB/s), 246KiB/s-275KiB/s (252kB/s-282kB/s), io=23.4MiB (24.5MB), run=22711-23355msec WRITE: bw=1079KiB/s (1105kB/s), 266KiB/s-280KiB/s (272kB/s-287kB/s), io=24.6MiB (25.8MB), run=22711-23355msec 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=149949: Tue Jan 6 14:45:01 2026 read: IOPS=2, BW=2262KiB/s (2316kB/s)(7168KiB/3169msec) clat (msec): min=19, max=565, avg=218.17, stdev=216.60 lat (msec): min=19, max=565, avg=218.17, stdev=216.60 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 20], 10.00th=[ 20], 20.00th=[ 47], | 30.00th=[ 74], 40.00th=[ 74], 50.00th=[ 111], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 464], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1996, max= 4096, per=52.26%, avg=3377.00, stdev=1196.32, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1616KiB/s (1654kB/s)(5120KiB/3169msec); 0 zone resets clat (msec): min=77, max=628, avg=286.58, stdev=234.17 lat (msec): min=77, max=628, avg=286.66, stdev=234.19 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 79], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 159], 60.00th=[ 159], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 2035, max= 6119, per=45.06%, avg=4077.00, stdev=2887.82, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 20=8.33%, 50=8.33%, 100=16.67%, 250=33.33%, 500=16.67% lat (msec) : 750=16.67% cpu : usr=0.00%, sys=12.75%, ctx=100, 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=149950: Tue Jan 6 14:45:01 2026 read: IOPS=0, BW=678KiB/s (694kB/s)(2048KiB/3022msec) clat (usec): min=58241, max=89223, avg=73732.10, stdev=21907.71 lat (usec): min=58243, max=89224, avg=73733.86, stdev=21906.69 clat percentiles (usec): | 1.00th=[58459], 5.00th=[58459], 10.00th=[58459], 20.00th=[58459], | 30.00th=[58459], 40.00th=[58459], 50.00th=[58459], 60.00th=[89654], | 70.00th=[89654], 80.00th=[89654], 90.00th=[89654], 95.00th=[89654], | 99.00th=[89654], 99.50th=[89654], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 1885, max= 2035, per=30.33%, avg=1960.00, stdev=106.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3388KiB/s (3470kB/s)(10.0MiB/3022msec); 0 zone resets clat (msec): min=106, max=499, avg=284.02, stdev=143.38 lat (msec): min=106, max=499, avg=284.11, stdev=143.39 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 109], | 30.00th=[ 115], 40.00th=[ 226], 50.00th=[ 243], 60.00th=[ 359], | 70.00th=[ 393], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 1885, max= 4096, per=35.51%, avg=3212.60, stdev=1152.38, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.34, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=41.67% cpu : usr=0.03%, sys=13.47%, ctx=123, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149952: Tue Jan 6 14:45:01 2026 read: IOPS=2, BW=2067KiB/s (2117kB/s)(6144KiB/2972msec) clat (msec): min=64, max=556, avg=208.55, stdev=193.76 lat (msec): min=64, max=556, avg=208.55, stdev=193.76 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 71], | 30.00th=[ 71], 40.00th=[ 118], 50.00th=[ 118], 60.00th=[ 126], | 70.00th=[ 317], 80.00th=[ 317], 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= 1996, max= 6144, per=52.40%, avg=3386.33, stdev=2388.24, samples=3 iops : min= 1, max= 6, avg= 2.67, stdev= 2.89, samples=3 write: IOPS=2, BW=2067KiB/s (2117kB/s)(6144KiB/2972msec); 0 zone resets clat (msec): min=86, max=425, avg=275.23, stdev=133.36 lat (msec): min=86, max=425, avg=275.30, stdev=133.36 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 321], | 70.00th=[ 405], 80.00th=[ 405], 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= 1996, max= 4023, per=27.87%, avg=2521.50, stdev=1001.23, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=8.58%, ctx=111, 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=149954: Tue Jan 6 14:45:01 2026 read: IOPS=1, BW=1866KiB/s (1911kB/s)(5120KiB/2744msec) clat (msec): min=67, max=275, avg=211.30, stdev=81.93 lat (msec): min=67, max=275, avg=211.31, stdev=81.93 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 68], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 239], 60.00th=[ 239], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 2019, max= 4071, per=41.98%, avg=2712.67, stdev=1176.44, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=2, BW=2612KiB/s (2675kB/s)(7168KiB/2744msec); 0 zone resets clat (msec): min=104, max=403, avg=228.29, stdev=127.96 lat (msec): min=104, max=403, avg=228.37, stdev=127.96 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 107], | 30.00th=[ 132], 40.00th=[ 132], 50.00th=[ 218], 60.00th=[ 239], | 70.00th=[ 239], 80.00th=[ 397], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1892, max= 3992, per=27.50%, avg=2487.75, stdev=1005.12, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=66.67%, 500=25.00% cpu : usr=0.00%, sys=8.60%, ctx=101, 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=6463KiB/s (6618kB/s), 678KiB/s-2262KiB/s (694kB/s-2316kB/s), io=20.0MiB (20.0MB), run=2744-3169msec WRITE: bw=9048KiB/s (9265kB/s), 1616KiB/s-3388KiB/s (1654kB/s-3470kB/s), io=28.0MiB (29.4MB), run=2744-3169msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149951: Tue Jan 6 14:45:01 2026 read: IOPS=3, BW=3391KiB/s (3472kB/s)(7168KiB/2114msec) clat (msec): min=72, max=247, avg=144.11, stdev=57.50 lat (msec): min=72, max=247, avg=144.11, stdev=57.50 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 102], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 134], 60.00th=[ 134], | 70.00th=[ 134], 80.00th=[ 186], 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= 1984, max= 4087, per=45.18%, avg=3016.50, stdev=1177.44, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=2, BW=2422KiB/s (2480kB/s)(5120KiB/2114msec); 0 zone resets clat (msec): min=48, max=444, avg=182.31, stdev=155.51 lat (msec): min=48, max=445, avg=182.41, stdev=155.49 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 49], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 140], 60.00th=[ 140], | 70.00th=[ 186], 80.00th=[ 186], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 1984, max= 6131, per=36.11%, avg=3375.33, stdev=2386.52, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 50=8.33%, 100=16.67%, 250=66.67%, 500=8.33% cpu : usr=0.05%, sys=41.32%, ctx=1122, 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=149953: Tue Jan 6 14:45:01 2026 read: IOPS=0, BW=668KiB/s (684kB/s)(2048KiB/3067msec) clat (msec): min=85, max=227, avg=156.68, stdev=100.26 lat (msec): min=85, max=227, avg=156.68, stdev=100.26 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 86], 60.00th=[ 228], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 228], 95.00th=[ 228], | 99.00th=[ 228], 99.50th=[ 228], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 1965, max= 2035, per=29.95%, avg=2000.00, stdev=49.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3339KiB/s (3419kB/s)(10.0MiB/3067msec); 0 zone resets clat (msec): min=138, max=611, avg=270.34, stdev=160.89 lat (msec): min=138, max=611, avg=270.41, stdev=160.89 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 148], | 30.00th=[ 150], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 232], | 70.00th=[ 257], 80.00th=[ 351], 90.00th=[ 477], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1965, max= 4096, per=32.42%, avg=3030.33, stdev=1132.13, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=35.39%, ctx=598, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149955: Tue Jan 6 14:45:01 2026 read: IOPS=2, BW=2546KiB/s (2607kB/s)(6144KiB/2413msec) clat (usec): min=787, max=178386, avg=95507.82, stdev=77382.09 lat (usec): min=789, max=178388, avg=95509.20, stdev=77382.00 clat percentiles (usec): | 1.00th=[ 791], 5.00th=[ 791], 10.00th=[ 791], 20.00th=[ 1045], | 30.00th=[ 1045], 40.00th=[101188], 50.00th=[101188], 60.00th=[139461], | 70.00th=[152044], 80.00th=[152044], 90.00th=[179307], 95.00th=[179307], | 99.00th=[179307], 99.50th=[179307], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 3968, max= 4087, per=60.32%, avg=4027.50, stdev=84.15, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2546KiB/s (2607kB/s)(6144KiB/2413msec); 0 zone resets clat (msec): min=140, max=471, avg=271.33, stdev=115.80 lat (msec): min=140, max=471, avg=271.41, stdev=115.81 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 184], | 30.00th=[ 184], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 264], | 70.00th=[ 317], 80.00th=[ 317], 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= 1965, max= 2043, per=21.40%, avg=2000.75, stdev=33.91, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=50.00%, 500=33.33% cpu : usr=0.00%, sys=28.90%, ctx=275, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149956: Tue Jan 6 14:45:01 2026 read: IOPS=1, BW=1747KiB/s (1789kB/s)(5120KiB/2930msec) clat (usec): min=464, max=220880, avg=83127.74, stdev=113383.37 lat (usec): min=465, max=220881, avg=83128.87, stdev=113383.50 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 465], | 30.00th=[ 652], 40.00th=[ 652], 50.00th=[ 816], 60.00th=[ 816], | 70.00th=[191890], 80.00th=[191890], 90.00th=[221250], 95.00th=[221250], | 99.00th=[221250], 99.50th=[221250], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2446KiB/s (2505kB/s)(7168KiB/2930msec); 0 zone resets clat (msec): min=171, max=573, avg=348.11, stdev=152.28 lat (msec): min=171, max=573, avg=348.17, stdev=152.28 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 205], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 380], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 485], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1984, max= 2043, per=21.60%, avg=2019.25, stdev=27.48, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.03%, sys=28.20%, ctx=169, 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=6678KiB/s (6838kB/s), 668KiB/s-3391KiB/s (684kB/s-3472kB/s), io=20.0MiB (20.0MB), run=2114-3067msec WRITE: bw=9349KiB/s (9573kB/s), 2422KiB/s-3339KiB/s (2480kB/s-3419kB/s), io=28.0MiB (29.4MB), run=2114-3067msec 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=149966: Tue Jan 6 14:45:08 2026 read: IOPS=2, BW=8269KiB/s (8468kB/s)(12.0MiB/1486msec) clat (msec): min=385, max=549, avg=468.71, stdev=82.16 lat (msec): min=385, max=549, avg=468.71, stdev=82.16 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 5944, max= 8159, per=81.14%, avg=7051.50, stdev=1566.24, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=47.61%, ctx=1547, 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=149967: Tue Jan 6 14:45:08 2026 read: IOPS=0, BW=2173KiB/s (2225kB/s)(4096KiB/1885msec) clat (nsec): min=454681k, max=454681k, avg=454681157.00, stdev= 0.00 lat (nsec): min=454682k, max=454682k, avg=454682237.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 5859, max= 5859, per=67.41%, avg=5859.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4346KiB/s (4450kB/s)(8192KiB/1885msec); 0 zone resets clat (msec): min=273, max=1135, avg=704.90, stdev=609.39 lat (msec): min=274, max=1135, avg=705.11, stdev=609.32 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 1133], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8192, max= 8192, per=47.35%, 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=20.81%, ctx=633, 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=149968: Tue Jan 6 14:45:08 2026 write: IOPS=1, BW=6488KiB/s (6644kB/s)(12.0MiB/1894msec); 0 zone resets clat (msec): min=322, max=857, avg=600.59, stdev=268.02 lat (msec): min=323, max=858, avg=600.90, stdev=268.05 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 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= 8159, max= 8192, per=47.26%, 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%, 1000=33.33% cpu : usr=0.00%, sys=13.15%, ctx=64, 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=149969: Tue Jan 6 14:45:08 2026 write: IOPS=1, BW=7787KiB/s (7974kB/s)(12.0MiB/1578msec); 0 zone resets clat (msec): min=306, max=799, avg=515.11, stdev=255.16 lat (msec): min=307, max=799, avg=515.31, stdev=255.14 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min=16318, max=16318, per=94.32%, avg=16318.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=16.30%, ctx=76, 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=8692KiB/s (8900kB/s), 2173KiB/s-8269KiB/s (2225kB/s-8468kB/s), io=16.0MiB (16.8MB), run=1486-1885msec WRITE: bw=16.9MiB/s (17.7MB/s), 4346KiB/s-7787KiB/s (4450kB/s-7974kB/s), io=32.0MiB (33.6MB), run=1578-1894msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149962: Tue Jan 6 14:45:08 2026 read: IOPS=2, BW=10.1MiB/s (10.6MB/s)(12.0MiB/1192msec) clat (msec): min=195, max=676, avg=359.67, stdev=274.23 lat (msec): min=195, max=676, avg=359.67, stdev=274.23 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min=11010, max=11010, per=100.00%, avg=11010.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 750=33.33% cpu : usr=0.00%, sys=20.82%, ctx=106, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149963: Tue Jan 6 14:45:08 2026 read: IOPS=0, BW=1931KiB/s (1978kB/s)(4096KiB/2121msec) clat (nsec): min=524158k, max=524158k, avg=524157646.00, stdev= 0.00 lat (nsec): min=524159k, max=524159k, avg=524158996.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] 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=3862KiB/s (3955kB/s)(8192KiB/2121msec); 0 zone resets clat (msec): min=266, max=1200, avg=733.51, stdev=660.08 lat (msec): min=267, max=1200, avg=733.82, stdev=660.02 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8192, max= 8192, per=53.40%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.65%, ctx=45, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149964: Tue Jan 6 14:45:08 2026 write: IOPS=1, BW=5753KiB/s (5891kB/s)(12.0MiB/2136msec); 0 zone resets clat (msec): min=303, max=1253, avg=671.22, stdev=509.83 lat (msec): min=303, max=1253, avg=671.54, stdev=509.84 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8192, max= 8192, per=53.40%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=11.48%, ctx=71, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149965: Tue Jan 6 14:45:08 2026 write: IOPS=1, BW=7959KiB/s (8150kB/s)(12.0MiB/1544msec); 0 zone resets clat (msec): min=325, max=586, avg=474.69, stdev=134.54 lat (msec): min=326, max=586, avg=475.25, stdev=134.09 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 514], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 5468, max= 8175, per=44.47%, avg=6821.50, stdev=1914.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.06%, sys=17.50%, ctx=74, 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=7725KiB/s (7910kB/s), 1931KiB/s-10.1MiB/s (1978kB/s-10.6MB/s), io=16.0MiB (16.8MB), run=1192-2121msec WRITE: bw=14.0MiB/s (15.7MB/s), 3862KiB/s-7959KiB/s (3955kB/s-8150kB/s), io=32.0MiB (33.6MB), run=1544-2136msec