== sanity test 398b: DIO and buffer IO race ============== 18:55:23 (1787698523) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.34824 s, 15.0 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=160734: Tue Aug 25 18:56:23 2026 read: IOPS=30, BW=122KiB/s (125kB/s)(5992KiB/48932msec) clat (usec): min=26, max=703798, avg=16659.54, stdev=20200.12 lat (usec): min=27, max=703798, avg=16660.22, stdev=20200.13 clat percentiles (usec): | 1.00th=[ 83], 5.00th=[ 5342], 10.00th=[ 6980], 20.00th=[ 8717], | 30.00th=[ 10683], 40.00th=[ 12518], 50.00th=[ 14353], 60.00th=[ 16581], | 70.00th=[ 19268], 80.00th=[ 22676], 90.00th=[ 28443], 95.00th=[ 33162], | 99.00th=[ 50070], 99.50th=[ 61080], 99.90th=[104334], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 15, max= 247, per=25.39%, avg=121.89, stdev=41.16, samples=97 iops : min= 3, max= 61, avg=30.16, stdev=10.31, samples=97 write: IOPS=32, BW=129KiB/s (132kB/s)(6296KiB/48932msec); 0 zone resets clat (usec): min=583, max=123039, avg=15116.15, stdev=13116.30 lat (usec): min=584, max=123040, avg=15116.97, stdev=13116.41 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 1647], 10.00th=[ 2442], 20.00th=[ 3392], | 30.00th=[ 5604], 40.00th=[ 8979], 50.00th=[ 12387], 60.00th=[ 15401], | 70.00th=[ 19006], 80.00th=[ 24249], 90.00th=[ 32637], 95.00th=[ 39584], | 99.00th=[ 56886], 99.50th=[ 66847], 99.90th=[107480], 99.95th=[123208], | 99.99th=[123208] bw ( KiB/s): min= 40, max= 256, per=25.72%, avg=129.35, stdev=40.92, samples=96 iops : min= 10, max= 64, avg=32.03, stdev=10.29, samples=96 lat (usec) : 50=0.16%, 100=0.42%, 250=1.04%, 500=0.07%, 750=0.72% lat (usec) : 1000=0.62% lat (msec) : 2=2.18%, 4=8.72%, 10=20.61%, 20=37.66%, 50=26.40% lat (msec) : 100=1.27%, 250=0.10%, 750=0.03% cpu : usr=0.09%, sys=27.28%, ctx=8453, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=160736: Tue Aug 25 18:56:23 2026 read: IOPS=30, BW=121KiB/s (124kB/s)(5940KiB/49197msec) clat (usec): min=28, max=127571, avg=16703.66, stdev=10776.54 lat (usec): min=29, max=127572, avg=16704.34, stdev=10776.59 clat percentiles (usec): | 1.00th=[ 83], 5.00th=[ 3654], 10.00th=[ 6587], 20.00th=[ 8717], | 30.00th=[ 10552], 40.00th=[ 12518], 50.00th=[ 14484], 60.00th=[ 16909], | 70.00th=[ 20579], 80.00th=[ 24249], 90.00th=[ 29754], 95.00th=[ 34866], | 99.00th=[ 48497], 99.50th=[ 59507], 99.90th=[107480], 99.95th=[127402], | 99.99th=[127402] bw ( KiB/s): min= 15, max= 216, per=25.10%, avg=120.48, stdev=37.32, samples=98 iops : min= 3, max= 54, avg=29.81, stdev= 9.38, samples=98 write: IOPS=32, BW=129KiB/s (132kB/s)(6348KiB/49197msec); 0 zone resets clat (usec): min=591, max=724772, avg=15254.97, stdev=21928.63 lat (usec): min=591, max=724773, avg=15255.79, stdev=21928.64 clat percentiles (usec): | 1.00th=[ 799], 5.00th=[ 1909], 10.00th=[ 2606], 20.00th=[ 4047], | 30.00th=[ 5735], 40.00th=[ 9241], 50.00th=[ 12387], 60.00th=[ 15401], | 70.00th=[ 18482], 80.00th=[ 22938], 90.00th=[ 31065], 95.00th=[ 38011], | 99.00th=[ 55313], 99.50th=[ 67634], 99.90th=[137364], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 38, max= 367, per=25.62%, avg=128.88, stdev=44.63, samples=98 iops : min= 9, max= 91, avg=31.91, stdev=11.17, samples=98 lat (usec) : 50=0.13%, 100=0.46%, 250=1.60%, 500=0.10%, 750=0.46% lat (usec) : 1000=0.81% lat (msec) : 2=1.63%, 4=7.58%, 10=22.17%, 20=36.46%, 50=27.28% lat (msec) : 100=1.14%, 250=0.16%, 750=0.03% cpu : usr=0.09%, sys=27.59%, ctx=8598, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160738: Tue Aug 25 18:56:23 2026 read: IOPS=30, BW=121KiB/s (124kB/s)(6028KiB/49950msec) clat (usec): min=26, max=704446, avg=17144.22, stdev=20854.21 lat (usec): min=26, max=704447, avg=17144.94, stdev=20854.23 clat percentiles (usec): | 1.00th=[ 81], 5.00th=[ 3064], 10.00th=[ 6783], 20.00th=[ 8848], | 30.00th=[ 10552], 40.00th=[ 12256], 50.00th=[ 14484], 60.00th=[ 16909], | 70.00th=[ 19792], 80.00th=[ 23462], 90.00th=[ 28967], 95.00th=[ 35914], | 99.00th=[ 54789], 99.50th=[ 68682], 99.90th=[112722], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 220, per=24.97%, avg=119.84, stdev=35.58, samples=99 iops : min= 1, max= 55, avg=29.65, stdev= 8.91, samples=99 write: IOPS=31, BW=125KiB/s (128kB/s)(6260KiB/49950msec); 0 zone resets clat (usec): min=626, max=164564, avg=15287.40, stdev=12954.67 lat (usec): min=627, max=164564, avg=15288.29, stdev=12954.67 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 1958], 10.00th=[ 2671], 20.00th=[ 4113], | 30.00th=[ 5997], 40.00th=[ 9241], 50.00th=[ 12518], 60.00th=[ 15795], | 70.00th=[ 19530], 80.00th=[ 24773], 90.00th=[ 32637], 95.00th=[ 38536], | 99.00th=[ 51119], 99.50th=[ 60556], 99.90th=[120062], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 23, max= 239, per=24.69%, avg=124.21, stdev=44.07, samples=99 iops : min= 5, max= 59, avg=30.74, stdev=11.06, samples=99 lat (usec) : 50=0.20%, 100=0.72%, 250=1.40%, 500=0.03%, 750=0.62% lat (usec) : 1000=0.72% lat (msec) : 2=1.46%, 4=7.29%, 10=22.33%, 20=36.17%, 50=27.80% lat (msec) : 100=1.11%, 250=0.13%, 750=0.03% cpu : usr=0.09%, sys=27.26%, ctx=8763, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160740: Tue Aug 25 18:56:23 2026 read: IOPS=30, BW=121KiB/s (124kB/s)(6052KiB/49818msec) clat (usec): min=24, max=86619, avg=16267.77, stdev=10279.77 lat (usec): min=25, max=86620, avg=16272.74, stdev=10274.57 clat percentiles (usec): | 1.00th=[ 81], 5.00th=[ 243], 10.00th=[ 6390], 20.00th=[ 8356], | 30.00th=[10290], 40.00th=[12125], 50.00th=[14353], 60.00th=[16581], | 70.00th=[19268], 80.00th=[23200], 90.00th=[29754], 95.00th=[35390], | 99.00th=[52691], 99.50th=[57934], 99.90th=[68682], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 40, max= 279, per=25.69%, avg=123.29, stdev=39.46, samples=97 iops : min= 10, max= 69, avg=30.52, stdev= 9.88, samples=97 write: IOPS=31, BW=125KiB/s (128kB/s)(6236KiB/49818msec); 0 zone resets clat (usec): min=613, max=764190, avg=16040.62, stdev=23500.20 lat (usec): min=613, max=764191, avg=16041.47, stdev=23500.25 clat percentiles (usec): | 1.00th=[ 840], 5.00th=[ 1811], 10.00th=[ 2606], 20.00th=[ 3785], | 30.00th=[ 5997], 40.00th=[ 9110], 50.00th=[ 12387], 60.00th=[ 15926], | 70.00th=[ 19268], 80.00th=[ 23987], 90.00th=[ 33424], 95.00th=[ 42730], | 99.00th=[ 64226], 99.50th=[ 82314], 99.90th=[103285], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 24, max= 279, per=25.02%, avg=125.83, stdev=41.47, samples=98 iops : min= 6, max= 69, avg=31.14, stdev=10.42, samples=98 lat (usec) : 50=0.26%, 100=0.65%, 250=1.56%, 500=0.10%, 750=0.36% lat (usec) : 1000=0.46% lat (msec) : 2=2.31%, 4=7.94%, 10=22.27%, 20=35.97%, 50=26.14% lat (msec) : 100=1.89%, 250=0.07%, 1000=0.03% cpu : usr=0.12%, sys=27.05%, ctx=8663, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=481KiB/s (492kB/s), 121KiB/s-122KiB/s (124kB/s-125kB/s), io=23.4MiB (24.6MB), run=48932-49950msec WRITE: bw=503KiB/s (515kB/s), 125KiB/s-129KiB/s (128kB/s-132kB/s), io=24.6MiB (25.7MB), run=48932-49950msec fio: pid=160739, err=5/file:backend.c:481, func=full resid, error=Input/output error fio: pid=160737, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=160733: Tue Aug 25 18:56:41 2026 read: IOPS=22, BW=88.1KiB/s (90.2kB/s)(5992KiB/68011msec) clat (msec): min=2, max=720, avg=13.84, stdev=23.51 lat (msec): min=2, max=720, avg=13.84, stdev=23.51 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 4], | 30.00th=[ 5], 40.00th=[ 7], 50.00th=[ 8], 60.00th=[ 11], | 70.00th=[ 15], 80.00th=[ 22], 90.00th=[ 32], 95.00th=[ 43], | 99.00th=[ 67], 99.50th=[ 88], 99.90th=[ 178], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 256, per=31.14%, avg=88.13, stdev=61.64, samples=134 iops : min= 1, max= 64, avg=21.77, stdev=15.58, samples=134 write: IOPS=23, BW=92.6KiB/s (94.8kB/s)(6296KiB/68011msec); 0 zone resets clat (msec): min=9, max=194, avg=29.92, stdev=19.41 lat (msec): min=9, max=194, avg=29.92, stdev=19.41 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 45], 90.00th=[ 56], 95.00th=[ 68], | 99.00th=[ 95], 99.50th=[ 111], 99.90th=[ 134], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 8, max= 240, per=31.14%, avg=92.48, stdev=59.09, samples=134 iops : min= 2, max= 60, avg=22.86, stdev=14.91, samples=134 lat (msec) : 4=12.40%, 10=16.54%, 20=32.58%, 50=29.20%, 100=8.79% lat (msec) : 250=0.46%, 750=0.03% cpu : usr=0.10%, sys=8.59%, ctx=5794, 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=160735: Tue Aug 25 18:56:41 2026 read: IOPS=21, BW=87.3KiB/s (89.4kB/s)(5940KiB/68067msec) clat (msec): min=2, max=742, avg=13.62, stdev=23.63 lat (msec): min=2, max=742, avg=13.62, stdev=23.63 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 4], | 30.00th=[ 5], 40.00th=[ 7], 50.00th=[ 8], 60.00th=[ 11], | 70.00th=[ 15], 80.00th=[ 21], 90.00th=[ 31], 95.00th=[ 42], | 99.00th=[ 65], 99.50th=[ 73], 99.90th=[ 178], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 8, max= 280, per=30.86%, avg=87.34, stdev=61.10, samples=134 iops : min= 2, max= 70, avg=21.57, stdev=15.41, samples=134 write: IOPS=23, BW=93.3KiB/s (95.5kB/s)(6348KiB/68067msec); 0 zone resets clat (msec): min=10, max=196, avg=30.03, stdev=19.30 lat (msec): min=10, max=196, avg=30.03, stdev=19.30 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 28], | 70.00th=[ 37], 80.00th=[ 45], 90.00th=[ 57], 95.00th=[ 66], | 99.00th=[ 95], 99.50th=[ 112], 99.90th=[ 157], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 23, max= 224, per=31.28%, avg=92.90, stdev=58.30, samples=134 iops : min= 5, max= 56, avg=22.96, stdev=14.73, samples=134 lat (msec) : 4=12.17%, 10=16.47%, 20=32.52%, 50=29.36%, 100=8.95% lat (msec) : 250=0.49%, 750=0.03% cpu : usr=0.10%, sys=8.60%, ctx=5803, 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=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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=160737: Tue Aug 25 18:56:41 2026 read: IOPS=16, BW=67.3KiB/s (68.9kB/s)(3724KiB/55357msec) clat (msec): min=2, max=116, avg=18.21, stdev=14.76 lat (msec): min=2, max=116, avg=18.21, stdev=14.76 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 36], 95.00th=[ 48], | 99.00th=[ 69], 99.50th=[ 80], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 7, max= 208, per=23.70%, avg=67.08, stdev=38.38, samples=109 iops : min= 1, max= 52, avg=16.45, stdev= 9.67, samples=109 write: IOPS=17, BW=69.5KiB/s (71.2kB/s)(3848KiB/55357msec); 0 zone resets clat (msec): min=10, max=757, avg=39.74, stdev=30.89 lat (msec): min=10, max=757, avg=39.74, stdev=30.89 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 46], 80.00th=[ 54], 90.00th=[ 66], 95.00th=[ 78], | 99.00th=[ 113], 99.50th=[ 136], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 24, max= 192, per=23.40%, avg=69.50, stdev=36.79, samples=109 iops : min= 6, max= 48, avg=17.06, stdev= 9.29, samples=109 lat (msec) : 4=4.91%, 10=10.35%, 20=26.19%, 50=43.77%, 100=13.94% lat (msec) : 250=0.74%, 1000=0.05% cpu : usr=0.05%, sys=8.56%, ctx=3255, majf=0, minf=19 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=932,962,0,0 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=160739: Tue Aug 25 18:56:41 2026 read: IOPS=16, BW=66.3KiB/s (67.9kB/s)(3636KiB/54803msec) clat (msec): min=2, max=118, avg=18.46, stdev=14.69 lat (msec): min=2, max=118, avg=18.46, stdev=14.69 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 37], 95.00th=[ 49], | 99.00th=[ 64], 99.50th=[ 74], 99.90th=[ 118], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 8, max= 312, per=23.75%, avg=67.21, stdev=43.10, samples=107 iops : min= 2, max= 78, avg=16.48, stdev=10.86, samples=107 write: IOPS=17, BW=68.5KiB/s (70.1kB/s)(3752KiB/54803msec); 0 zone resets clat (msec): min=12, max=759, avg=40.36, stdev=31.23 lat (msec): min=12, max=759, avg=40.36, stdev=31.23 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 47], 80.00th=[ 55], 90.00th=[ 64], 95.00th=[ 75], | 99.00th=[ 112], 99.50th=[ 136], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 24, max= 200, per=23.07%, avg=68.53, stdev=35.81, samples=108 iops : min= 6, max= 50, avg=16.81, stdev= 9.04, samples=108 lat (msec) : 4=5.84%, 10=10.17%, 20=24.57%, 50=44.37%, 100=14.18% lat (msec) : 250=0.76%, 1000=0.05% cpu : usr=0.07%, sys=8.57%, ctx=3031, majf=0, minf=20 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=910,938,0,0 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=283KiB/s (290kB/s), 66.3KiB/s-88.1KiB/s (67.9kB/s-90.2kB/s), io=18.8MiB (19.8MB), run=54803-68067msec WRITE: bw=297KiB/s (305kB/s), 68.5KiB/s-93.3KiB/s (70.1kB/s-95.5kB/s), io=19.8MiB (20.7MB), run=54803-68067msec 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=160769: Tue Aug 25 18:56:58 2026 read: IOPS=35, BW=573KiB/s (587kB/s)(5920KiB/10325msec) clat (usec): min=59, max=46101, avg=13533.99, stdev=8153.79 lat (usec): min=60, max=46102, avg=13534.63, stdev=8153.79 clat percentiles (usec): | 1.00th=[ 81], 5.00th=[ 109], 10.00th=[ 131], 20.00th=[ 8455], | 30.00th=[ 9896], 40.00th=[10945], 50.00th=[12911], 60.00th=[14484], | 70.00th=[16712], 80.00th=[19530], 90.00th=[22938], 95.00th=[28443], | 99.00th=[38011], 99.50th=[44827], 99.90th=[45876], 99.95th=[45876], | 99.99th=[45876] bw ( KiB/s): min= 352, max= 896, per=25.56%, avg=573.15, stdev=133.73, samples=20 iops : min= 22, max= 56, avg=35.45, stdev= 8.42, samples=20 write: IOPS=38, BW=617KiB/s (632kB/s)(6368KiB/10325msec); 0 zone resets clat (usec): min=1063, max=81820, avg=13224.12, stdev=10047.64 lat (usec): min=1064, max=81821, avg=13225.32, stdev=10047.56 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 3523], 10.00th=[ 3949], 20.00th=[ 4490], | 30.00th=[ 5735], 40.00th=[ 8586], 50.00th=[10814], 60.00th=[13304], | 70.00th=[16581], 80.00th=[20317], 90.00th=[26084], 95.00th=[30540], | 99.00th=[43254], 99.50th=[61080], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 416, max= 855, per=26.22%, avg=618.35, stdev=120.17, samples=20 iops : min= 26, max= 53, avg=38.30, stdev= 7.50, samples=20 lat (usec) : 100=1.69%, 250=4.43% lat (msec) : 2=1.17%, 4=4.56%, 10=27.08%, 20=41.93%, 50=18.75% lat (msec) : 100=0.39% cpu : usr=0.13%, sys=30.77%, ctx=2471, 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=160770: Tue Aug 25 18:56:58 2026 read: IOPS=33, BW=539KiB/s (552kB/s)(5744KiB/10648msec) clat (usec): min=79, max=96598, avg=14733.67, stdev=9632.85 lat (usec): min=79, max=96598, avg=14734.37, stdev=9632.82 clat percentiles (usec): | 1.00th=[ 94], 5.00th=[ 109], 10.00th=[ 225], 20.00th=[ 9503], | 30.00th=[10552], 40.00th=[11994], 50.00th=[13698], 60.00th=[15926], | 70.00th=[17957], 80.00th=[20317], 90.00th=[23462], 95.00th=[26608], | 99.00th=[52167], 99.50th=[79168], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 380, max= 736, per=24.30%, avg=544.90, stdev=117.43, samples=20 iops : min= 23, max= 46, avg=33.65, stdev= 7.51, samples=20 write: IOPS=38, BW=615KiB/s (629kB/s)(6544KiB/10648msec); 0 zone resets clat (usec): min=1295, max=50446, avg=12976.25, stdev=9674.25 lat (usec): min=1296, max=50447, avg=12977.55, stdev=9674.20 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 3359], 10.00th=[ 3982], 20.00th=[ 4555], | 30.00th=[ 5932], 40.00th=[ 7635], 50.00th=[10683], 60.00th=[13304], | 70.00th=[16450], 80.00th=[19792], 90.00th=[27132], 95.00th=[33817], | 99.00th=[43779], 99.50th=[45876], 99.90th=[50594], 99.95th=[50594], | 99.99th=[50594] bw ( KiB/s): min= 352, max= 828, per=25.69%, avg=605.80, stdev=103.95, samples=20 iops : min= 22, max= 51, avg=37.50, stdev= 6.38, samples=20 lat (usec) : 100=1.56%, 250=3.12% lat (msec) : 2=0.65%, 4=4.95%, 10=27.86%, 20=41.93%, 50=19.27% lat (msec) : 100=0.65% cpu : usr=0.11%, sys=30.61%, ctx=2525, 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=160771: Tue Aug 25 18:56:58 2026 read: IOPS=36, BW=586KiB/s (600kB/s)(6256KiB/10683msec) clat (usec): min=40, max=91350, avg=14906.13, stdev=9639.38 lat (usec): min=41, max=91351, avg=14907.31, stdev=9639.42 clat percentiles (usec): | 1.00th=[ 79], 5.00th=[ 121], 10.00th=[ 7308], 20.00th=[ 9241], | 30.00th=[10421], 40.00th=[11994], 50.00th=[13829], 60.00th=[15664], | 70.00th=[17433], 80.00th=[19792], 90.00th=[23200], 95.00th=[27395], | 99.00th=[53216], 99.50th=[80217], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 352, max= 764, per=26.20%, avg=587.48, stdev=89.35, samples=21 iops : min= 22, max= 47, avg=36.33, stdev= 5.46, samples=21 write: IOPS=35, BW=565KiB/s (578kB/s)(6032KiB/10683msec); 0 zone resets clat (usec): min=877, max=51240, avg=12821.32, stdev=8864.73 lat (usec): min=878, max=51241, avg=12822.60, stdev=8864.73 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 3261], 10.00th=[ 3916], 20.00th=[ 4621], | 30.00th=[ 5473], 40.00th=[ 8586], 50.00th=[10945], 60.00th=[13698], | 70.00th=[16188], 80.00th=[20055], 90.00th=[25297], 95.00th=[30540], | 99.00th=[38011], 99.50th=[44303], 99.90th=[51119], 99.95th=[51119], | 99.99th=[51119] bw ( KiB/s): min= 286, max= 860, per=23.85%, avg=562.48, stdev=162.96, samples=21 iops : min= 17, max= 53, avg=34.76, stdev=10.08, samples=21 lat (usec) : 50=0.13%, 100=1.04%, 250=2.73%, 1000=0.13% lat (msec) : 2=0.52%, 4=4.56%, 10=26.30%, 20=44.66%, 50=19.27% lat (msec) : 100=0.65% cpu : usr=0.14%, sys=30.58%, ctx=2532, 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=160772: Tue Aug 25 18:56:58 2026 read: IOPS=36, BW=577KiB/s (591kB/s)(6032KiB/10452msec) clat (usec): min=41, max=75567, avg=14643.08, stdev=10246.34 lat (usec): min=41, max=75568, avg=14643.75, stdev=10246.30 clat percentiles (usec): | 1.00th=[ 83], 5.00th=[ 104], 10.00th=[ 133], 20.00th=[ 8455], | 30.00th=[10421], 40.00th=[11994], 50.00th=[13960], 60.00th=[15926], | 70.00th=[18744], 80.00th=[21627], 90.00th=[24249], 95.00th=[27657], | 99.00th=[54264], 99.50th=[73925], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 352, max= 860, per=25.22%, avg=565.35, stdev=116.82, samples=20 iops : min= 22, max= 53, avg=34.95, stdev= 7.09, samples=20 write: IOPS=37, BW=599KiB/s (613kB/s)(6256KiB/10452msec); 0 zone resets clat (usec): min=1097, max=46283, avg=12397.45, stdev=8981.16 lat (usec): min=1097, max=46284, avg=12398.70, stdev=8981.43 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 3130], 10.00th=[ 3884], 20.00th=[ 4490], | 30.00th=[ 5800], 40.00th=[ 7635], 50.00th=[10421], 60.00th=[12256], | 70.00th=[15270], 80.00th=[19268], 90.00th=[25560], 95.00th=[30278], | 99.00th=[40109], 99.50th=[45351], 99.90th=[46400], 99.95th=[46400], | 99.99th=[46400] bw ( KiB/s): min= 415, max= 800, per=25.11%, avg=592.10, stdev=100.31, samples=20 iops : min= 25, max= 50, avg=36.65, stdev= 6.38, samples=20 lat (usec) : 50=0.13%, 100=1.82%, 250=5.21%, 500=0.26% lat (msec) : 2=1.04%, 4=5.73%, 10=23.96%, 20=40.36%, 50=20.83% lat (msec) : 100=0.65% cpu : usr=0.09%, sys=30.76%, ctx=2479, 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=2242KiB/s (2296kB/s), 539KiB/s-586KiB/s (552kB/s-600kB/s), io=23.4MiB (24.5MB), run=10325-10683msec WRITE: bw=2359KiB/s (2416kB/s), 565KiB/s-617KiB/s (578kB/s-632kB/s), io=24.6MiB (25.8MB), run=10325-10683msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160764: Tue Aug 25 18:57:04 2026 read: IOPS=21, BW=349KiB/s (357kB/s)(5920KiB/16972msec) clat (usec): min=2722, max=69598, avg=13157.55, stdev=11136.87 lat (usec): min=2722, max=69599, avg=13158.35, stdev=11136.81 clat percentiles (usec): | 1.00th=[ 2966], 5.00th=[ 3752], 10.00th=[ 4359], 20.00th=[ 5145], | 30.00th=[ 6587], 40.00th=[ 8094], 50.00th=[ 9372], 60.00th=[10683], | 70.00th=[12649], 80.00th=[19268], 90.00th=[28705], 95.00th=[38011], | 99.00th=[54789], 99.50th=[68682], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 64, max= 734, per=24.11%, avg=339.52, stdev=154.11, samples=33 iops : min= 4, max= 45, avg=20.91, stdev= 9.71, samples=33 write: IOPS=23, BW=375KiB/s (384kB/s)(6368KiB/16972msec); 0 zone resets clat (usec): min=12254, max=96526, avg=30302.68, stdev=14543.35 lat (usec): min=12256, max=96527, avg=30304.27, stdev=14543.28 clat percentiles (usec): | 1.00th=[14222], 5.00th=[16188], 10.00th=[17433], 20.00th=[19530], | 30.00th=[21103], 40.00th=[22676], 50.00th=[25560], 60.00th=[28705], | 70.00th=[32900], 80.00th=[39060], 90.00th=[53216], 95.00th=[62653], | 99.00th=[78119], 99.50th=[88605], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 191, max= 672, per=25.12%, avg=372.30, stdev=155.12, samples=33 iops : min= 11, max= 42, avg=22.94, stdev= 9.93, samples=33 lat (msec) : 4=3.26%, 10=23.05%, 20=24.74%, 50=42.84%, 100=6.12% cpu : usr=0.12%, sys=8.83%, ctx=1482, 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=160765: Tue Aug 25 18:57:04 2026 read: IOPS=21, BW=338KiB/s (346kB/s)(5744KiB/17003msec) clat (usec): min=3025, max=68555, avg=12700.42, stdev=10681.13 lat (usec): min=3026, max=68556, avg=12701.20, stdev=10681.08 clat percentiles (usec): | 1.00th=[ 3195], 5.00th=[ 3851], 10.00th=[ 4490], 20.00th=[ 5538], | 30.00th=[ 6521], 40.00th=[ 7767], 50.00th=[ 9110], 60.00th=[10683], | 70.00th=[12518], 80.00th=[17171], 90.00th=[26870], 95.00th=[36963], | 99.00th=[52691], 99.50th=[59507], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 51, max= 736, per=24.04%, avg=338.52, stdev=176.04, samples=33 iops : min= 3, max= 46, avg=20.85, stdev=11.16, samples=33 write: IOPS=24, BW=385KiB/s (394kB/s)(6544KiB/17003msec); 0 zone resets clat (msec): min=10, max=115, avg=30.21, stdev=14.85 lat (msec): min=10, max=115, avg=30.21, stdev=14.85 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 39], 90.00th=[ 51], 95.00th=[ 64], | 99.00th=[ 81], 99.50th=[ 89], 99.90th=[ 115], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 224, max= 672, per=25.54%, avg=378.45, stdev=138.94, samples=33 iops : min= 14, max= 42, avg=23.33, stdev= 8.82, samples=33 lat (msec) : 4=2.47%, 10=24.22%, 20=25.78%, 50=41.28%, 100=6.12% lat (msec) : 250=0.13% cpu : usr=0.15%, sys=8.78%, ctx=1454, 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=160766: Tue Aug 25 18:57:04 2026 read: IOPS=23, BW=373KiB/s (382kB/s)(6256KiB/16784msec) clat (usec): min=3009, max=77495, avg=12484.84, stdev=10552.35 lat (usec): min=3010, max=77495, avg=12485.75, stdev=10552.27 clat percentiles (usec): | 1.00th=[ 3458], 5.00th=[ 3916], 10.00th=[ 4490], 20.00th=[ 5211], | 30.00th=[ 6390], 40.00th=[ 7963], 50.00th=[ 9110], 60.00th=[10421], | 70.00th=[12256], 80.00th=[15533], 90.00th=[26608], 95.00th=[38536], | 99.00th=[50594], 99.50th=[61080], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 128, max= 1056, per=26.70%, avg=375.91, stdev=206.87, samples=33 iops : min= 8, max= 66, avg=23.18, stdev=13.02, samples=33 write: IOPS=22, BW=359KiB/s (368kB/s)(6032KiB/16784msec); 0 zone resets clat (usec): min=15012, max=97614, avg=31285.71, stdev=13955.49 lat (usec): min=15015, max=97616, avg=31287.66, stdev=13955.57 clat percentiles (usec): | 1.00th=[15270], 5.00th=[17433], 10.00th=[18482], 20.00th=[20055], | 30.00th=[22414], 40.00th=[24511], 50.00th=[26346], 60.00th=[29754], | 70.00th=[34866], 80.00th=[41157], 90.00th=[51119], 95.00th=[60556], | 99.00th=[74974], 99.50th=[91751], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 160, max= 640, per=24.12%, avg=357.39, stdev=137.10, samples=33 iops : min= 10, max= 40, avg=22.03, stdev= 8.80, samples=33 lat (msec) : 4=2.86%, 10=25.91%, 20=24.09%, 50=41.54%, 100=5.60% cpu : usr=0.13%, sys=9.12%, ctx=1524, 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=160768: Tue Aug 25 18:57:04 2026 read: IOPS=22, BW=355KiB/s (364kB/s)(6032KiB/16973msec) clat (usec): min=2598, max=86138, avg=14123.82, stdev=12791.43 lat (usec): min=2598, max=86139, avg=14124.62, stdev=12791.36 clat percentiles (usec): | 1.00th=[ 3163], 5.00th=[ 4113], 10.00th=[ 4621], 20.00th=[ 5669], | 30.00th=[ 6915], 40.00th=[ 8291], 50.00th=[ 9634], 60.00th=[11207], | 70.00th=[13435], 80.00th=[19792], 90.00th=[31851], 95.00th=[40633], | 99.00th=[60556], 99.50th=[85459], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 128, max= 704, per=24.74%, avg=348.30, stdev=159.86, samples=33 iops : min= 8, max= 44, avg=21.45, stdev=10.18, samples=33 write: IOPS=23, BW=369KiB/s (377kB/s)(6256KiB/16973msec); 0 zone resets clat (usec): min=11115, max=88404, avg=29732.47, stdev=13387.80 lat (usec): min=11116, max=88406, avg=29734.26, stdev=13387.70 clat percentiles (usec): | 1.00th=[14877], 5.00th=[15795], 10.00th=[17433], 20.00th=[19792], | 30.00th=[21627], 40.00th=[23462], 50.00th=[25297], 60.00th=[28443], | 70.00th=[31851], 80.00th=[38011], 90.00th=[47449], 95.00th=[60031], | 99.00th=[74974], 99.50th=[86508], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 128, max= 608, per=24.57%, avg=364.15, stdev=152.13, samples=33 iops : min= 8, max= 38, avg=22.45, stdev= 9.68, samples=33 lat (msec) : 4=2.08%, 10=23.31%, 20=25.13%, 50=43.36%, 100=6.12% cpu : usr=0.08%, sys=9.36%, ctx=1495, 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=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=1409KiB/s (1443kB/s), 338KiB/s-373KiB/s (346kB/s-382kB/s), io=23.4MiB (24.5MB), run=16784-17003msec WRITE: bw=1482KiB/s (1518kB/s), 359KiB/s-385KiB/s (368kB/s-394kB/s), io=24.6MiB (25.8MB), run=16784-17003msec 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=160779: Tue Aug 25 18:57:14 2026 read: IOPS=1, BW=1957KiB/s (2004kB/s)(7168KiB/3662msec) clat (usec): min=639, max=281206, avg=155465.26, stdev=104861.79 lat (usec): min=640, max=281208, avg=155466.55, stdev=104861.85 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 96994], | 30.00th=[105382], 40.00th=[105382], 50.00th=[113771], 60.00th=[210764], | 70.00th=[210764], 80.00th=[278922], 90.00th=[283116], 95.00th=[283116], | 99.00th=[283116], 99.50th=[283116], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 2048, max= 4930, per=84.23%, avg=3646.33, stdev=1466.54, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1398KiB/s (1432kB/s)(5120KiB/3662msec); 0 zone resets clat (msec): min=298, max=741, avg=507.69, stdev=193.78 lat (msec): min=298, max=742, avg=507.75, stdev=193.76 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 625], 80.00th=[ 625], 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= 1980, max= 2048, per=33.51%, avg=2031.00, stdev=34.00, samples=4 iops : min= 1, max= 2, avg= 1.75, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=25.00% cpu : usr=0.03%, sys=46.27%, ctx=656, 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=160780: Tue Aug 25 18:57:14 2026 read: IOPS=0, BW=433KiB/s (443kB/s)(2048KiB/4730msec) clat (usec): min=770, max=82006, avg=41388.44, stdev=57442.49 lat (usec): min=770, max=82008, avg=41389.63, stdev=57443.60 clat percentiles (usec): | 1.00th=[ 775], 5.00th=[ 775], 10.00th=[ 775], 20.00th=[ 775], | 30.00th=[ 775], 40.00th=[ 775], 50.00th=[ 775], 60.00th=[82314], | 70.00th=[82314], 80.00th=[82314], 90.00th=[82314], 95.00th=[82314], | 99.00th=[82314], 99.50th=[82314], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 1651, max= 2048, per=42.72%, avg=1849.50, stdev=280.72, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2165KiB/s (2217kB/s)(10.0MiB/4730msec); 0 zone resets clat (msec): min=302, max=758, avg=462.30, stdev=155.33 lat (msec): min=302, max=758, avg=462.36, stdev=155.32 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 435], | 70.00th=[ 477], 80.00th=[ 489], 90.00th=[ 701], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1651, max= 2048, per=32.67%, avg=1980.00, stdev=126.44, samples=9 iops : min= 1, max= 2, avg= 1.33, stdev= 0.50, samples=9 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 500=66.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=47.45%, ctx=525, 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=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=160781: Tue Aug 25 18:57:14 2026 read: IOPS=1, BW=1431KiB/s (1466kB/s)(6144KiB/4293msec) clat (usec): min=737, max=341276, avg=172570.63, stdev=168883.68 lat (usec): min=738, max=341277, avg=172571.53, stdev=168883.54 clat percentiles (usec): | 1.00th=[ 734], 5.00th=[ 734], 10.00th=[ 734], 20.00th=[ 750], | 30.00th=[ 750], 40.00th=[ 59507], 50.00th=[ 59507], 60.00th=[295699], | 70.00th=[337642], 80.00th=[337642], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 2048, max= 4096, per=77.81%, avg=3368.33, stdev=1145.43, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1431KiB/s (1466kB/s)(6144KiB/4293msec); 0 zone resets clat (msec): min=154, max=881, avg=534.60, stdev=332.69 lat (msec): min=154, max=881, avg=534.64, stdev=332.68 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 726], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1980, max= 3292, per=37.61%, avg=2279.80, stdev=566.52, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=16.67%, 500=33.33%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=33.20%, ctx=447, 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=160782: Tue Aug 25 18:57:14 2026 read: IOPS=1, BW=1460KiB/s (1495kB/s)(5120KiB/3506msec) clat (usec): min=465, max=508516, avg=152469.93, stdev=226876.91 lat (usec): min=466, max=508517, avg=152470.99, stdev=226876.85 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 465], | 30.00th=[ 519], 40.00th=[ 519], 50.00th=[ 783], 60.00th=[ 783], | 70.00th=[252707], 80.00th=[252707], 90.00th=[509608], 95.00th=[509608], | 99.00th=[509608], 99.50th=[509608], 99.90th=[509608], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 1980, max= 6144, per=93.83%, avg=4062.00, stdev=2944.39, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=2044KiB/s (2094kB/s)(7168KiB/3506msec); 0 zone resets clat (msec): min=94, max=727, avg=390.63, stdev=212.69 lat (msec): min=94, max=727, avg=390.70, stdev=212.69 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 271], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 355], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 600], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 2048, max= 4055, per=47.22%, avg=2862.00, stdev=989.56, samples=4 iops : min= 2, max= 3, avg= 2.50, stdev= 0.58, samples=4 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 100=8.33%, 500=41.67%, 750=25.00% cpu : usr=0.03%, sys=48.99%, ctx=225, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4330KiB/s (4434kB/s), 433KiB/s-1957KiB/s (443kB/s-2004kB/s), io=20.0MiB (20.0MB), run=3506-4730msec WRITE: bw=6062KiB/s (6207kB/s), 1398KiB/s-2165KiB/s (1432kB/s-2217kB/s), io=28.0MiB (29.4MB), run=3506-4730msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160784: Tue Aug 25 18:57:14 2026 read: IOPS=1, BW=1654KiB/s (1694kB/s)(7168KiB/4334msec) clat (msec): min=92, max=729, avg=305.86, stdev=235.09 lat (msec): min=92, max=729, avg=305.86, stdev=235.09 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 165], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 194], 60.00th=[ 243], | 70.00th=[ 243], 80.00th=[ 542], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1783, max= 4087, per=75.39%, avg=3193.33, stdev=1235.84, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1181KiB/s (1210kB/s)(5120KiB/4334msec); 0 zone resets clat (msec): min=298, max=618, avg=409.81, stdev=125.17 lat (msec): min=299, max=618, avg=409.92, stdev=125.17 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1889, max= 3806, per=42.99%, avg=2549.67, stdev=1088.50, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=25.00% cpu : usr=0.18%, sys=18.83%, ctx=237, 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=160785: Tue Aug 25 18:57:14 2026 read: IOPS=0, BW=424KiB/s (434kB/s)(2048KiB/4834msec) clat (msec): min=236, max=300, avg=268.53, stdev=44.98 lat (msec): min=236, max=300, avg=268.53, stdev=44.98 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 1793, max= 1903, per=43.63%, avg=1848.00, stdev=77.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2118KiB/s (2169kB/s)(10.0MiB/4834msec); 0 zone resets clat (msec): min=119, max=1120, avg=416.43, stdev=290.81 lat (msec): min=120, max=1120, avg=416.52, stdev=290.82 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 176], | 30.00th=[ 194], 40.00th=[ 305], 50.00th=[ 363], 60.00th=[ 376], | 70.00th=[ 393], 80.00th=[ 485], 90.00th=[ 634], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1855, max= 3447, per=36.79%, avg=2181.83, stdev=623.24, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=20.67%, ctx=260, 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=160786: Tue Aug 25 18:57:14 2026 read: IOPS=1, BW=1276KiB/s (1306kB/s)(6144KiB/4816msec) clat (msec): min=138, max=739, avg=366.86, stdev=257.54 lat (msec): min=138, max=739, avg=366.86, stdev=257.54 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 309], | 70.00th=[ 634], 80.00th=[ 634], 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= 1954, max= 3447, per=58.14%, avg=2463.00, stdev=852.34, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1276KiB/s (1306kB/s)(6144KiB/4816msec); 0 zone resets clat (msec): min=120, max=682, avg=415.28, stdev=240.30 lat (msec): min=120, max=682, avg=415.35, stdev=240.30 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 575], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1777, max= 1988, per=31.85%, avg=1889.25, stdev=86.68, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=41.67%, 500=16.67%, 750=41.67% cpu : usr=0.04%, sys=16.12%, ctx=166, 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=160787: Tue Aug 25 18:57:14 2026 read: IOPS=1, BW=1060KiB/s (1085kB/s)(5120KiB/4830msec) clat (msec): min=22, max=701, avg=255.14, stdev=261.77 lat (msec): min=22, max=701, avg=255.14, stdev=261.77 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 23], 10.00th=[ 23], 20.00th=[ 23], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 161], 60.00th=[ 161], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1954, max= 5171, per=84.10%, avg=3562.50, stdev=2274.76, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1484KiB/s (1520kB/s)(7168KiB/4830msec); 0 zone resets clat (msec): min=137, max=1152, avg=481.70, stdev=429.64 lat (msec): min=137, max=1152, avg=481.81, stdev=429.61 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 161], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 305], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 1045], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1787, max= 2043, per=32.34%, avg=1918.25, stdev=107.89, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 50=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, 2000=16.67% cpu : usr=0.04%, sys=13.58%, ctx=132, 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=4237KiB/s (4338kB/s), 424KiB/s-1654KiB/s (434kB/s-1694kB/s), io=20.0MiB (20.0MB), run=4334-4834msec WRITE: bw=5931KiB/s (6074kB/s), 1181KiB/s-2118KiB/s (1210kB/s-2169kB/s), io=28.0MiB (29.4MB), run=4334-4834msec 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=160794: Tue Aug 25 18:57:24 2026 read: IOPS=1, BW=5375KiB/s (5504kB/s)(12.0MiB/2286msec) clat (msec): min=636, max=936, avg=747.62, stdev=164.32 lat (msec): min=636, max=936, avg=747.62, stdev=164.32 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=52.60%, ctx=2633, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160795: Tue Aug 25 18:57:24 2026 read: IOPS=0, BW=1675KiB/s (1715kB/s)(4096KiB/2446msec) clat (nsec): min=636393k, max=636393k, avg=636392621.00, stdev= 0.00 lat (nsec): min=636395k, max=636395k, avg=636394977.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 5535, max= 5535, per=82.64%, avg=5535.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3349KiB/s (3430kB/s)(8192KiB/2446msec); 0 zone resets clat (msec): min=670, max=1109, avg=890.33, stdev=310.65 lat (msec): min=671, max=1110, avg=890.70, stdev=310.67 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7861, max= 7861, per=65.02%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=18.32%, ctx=883, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160796: Tue Aug 25 18:57:24 2026 write: IOPS=1, BW=4534KiB/s (4643kB/s)(12.0MiB/2710msec); 0 zone resets clat (msec): min=819, max=927, avg=888.42, stdev=59.53 lat (msec): min=820, max=928, avg=888.84, stdev=59.59 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 8192, max= 8192, per=67.75%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=28.24%, ctx=171, 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=160797: Tue Aug 25 18:57:24 2026 write: IOPS=1, BW=5824KiB/s (5963kB/s)(12.0MiB/2110msec); 0 zone resets clat (msec): min=406, max=1088, avg=694.93, stdev=352.75 lat (msec): min=407, max=1088, avg=695.24, stdev=352.74 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 5580, max= 7861, per=55.58%, avg=6720.50, stdev=1612.91, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=21.81%, ctx=117, 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=6698KiB/s (6859kB/s), 1675KiB/s-5375KiB/s (1715kB/s-5504kB/s), io=16.0MiB (16.8MB), run=2286-2446msec WRITE: bw=11.8MiB/s (12.4MB/s), 3349KiB/s-5824KiB/s (3430kB/s-5963kB/s), io=32.0MiB (33.6MB), run=2110-2710msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160799: Tue Aug 25 18:57:25 2026 read: IOPS=1, BW=4743KiB/s (4856kB/s)(12.0MiB/2591msec) clat (msec): min=481, max=1230, avg=830.93, stdev=376.53 lat (msec): min=481, max=1230, avg=830.93, stdev=376.53 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.12%, ctx=54, 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=160800: Tue Aug 25 18:57:25 2026 read: IOPS=0, BW=1663KiB/s (1703kB/s)(4096KiB/2463msec) clat (nsec): min=1286.8M, max=1286.8M, avg=1286844574.00, stdev= 0.00 lat (nsec): min=1286.8M, max=1286.8M, avg=1286847088.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1284], 5.00th=[ 1284], 10.00th=[ 1284], 20.00th=[ 1284], | 30.00th=[ 1284], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3326KiB/s (3406kB/s)(8192KiB/2463msec); 0 zone resets clat (msec): min=313, max=766, avg=540.23, stdev=320.23 lat (msec): min=314, max=766, avg=540.54, stdev=320.21 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 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= 8192, max= 8192, per=67.80%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.80%, ctx=103, 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=160801: Tue Aug 25 18:57:25 2026 write: IOPS=1, BW=4531KiB/s (4640kB/s)(12.0MiB/2712msec); 0 zone resets clat (msec): min=343, max=1165, avg=864.79, stdev=452.91 lat (msec): min=344, max=1165, avg=865.04, stdev=452.92 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8192, max= 8192, per=67.80%, 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%, 2000=66.67% cpu : usr=0.00%, sys=9.30%, ctx=66, 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=160802: Tue Aug 25 18:57:25 2026 write: IOPS=1, BW=5769KiB/s (5907kB/s)(12.0MiB/2130msec); 0 zone resets clat (msec): min=193, max=1263, avg=629.63, stdev=561.67 lat (msec): min=193, max=1263, avg=630.01, stdev=561.70 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 5704, max= 5704, per=47.21%, avg=5704.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=23.81%, ctx=118, 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=6323KiB/s (6475kB/s), 1663KiB/s-4743KiB/s (1703kB/s-4856kB/s), io=16.0MiB (16.8MB), run=2463-2591msec WRITE: bw=11.8MiB/s (12.4MB/s), 3326KiB/s-5769KiB/s (3406kB/s-5907kB/s), io=32.0MiB (33.6MB), run=2130-2712msec