== sanity test 398b: DIO and buffer IO race ============== 07:07:24 (1787569644) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.69329 s, 8.8 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=180693: Mon Aug 24 07:09:59 2026 read: IOPS=11, BW=44.6KiB/s (45.7kB/s)(5992KiB/134208msec) clat (usec): min=46, max=1321.5k, avg=50765.75, stdev=45820.27 lat (usec): min=46, max=1321.5k, avg=50778.91, stdev=45817.69 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11207], 10.00th=[ 18744], | 20.00th=[ 25297], 30.00th=[ 31065], 40.00th=[ 36963], | 50.00th=[ 43254], 60.00th=[ 51643], 70.00th=[ 60556], | 80.00th=[ 71828], 90.00th=[ 88605], 95.00th=[ 106431], | 99.00th=[ 168821], 99.50th=[ 189793], 99.90th=[ 235930], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 7, max= 95, per=25.10%, avg=44.42, stdev=16.03, samples=262 iops : min= 1, max= 23, avg=10.43, stdev= 4.03, samples=262 write: IOPS=11, BW=46.9KiB/s (48.0kB/s)(6296KiB/134208msec); 0 zone resets clat (usec): min=1020, max=311125, avg=36624.01, stdev=37648.33 lat (usec): min=1023, max=311126, avg=36627.13, stdev=37647.42 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1450], 10.00th=[ 2180], 20.00th=[ 4228], | 30.00th=[ 7963], 40.00th=[ 16057], 50.00th=[ 27132], 60.00th=[ 35914], | 70.00th=[ 47973], 80.00th=[ 62653], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[164627], 99.50th=[175113], 99.90th=[242222], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 128, per=25.48%, avg=47.13, stdev=22.01, samples=260 iops : min= 1, max= 32, avg=11.11, stdev= 5.54, samples=260 lat (usec) : 50=0.16%, 100=1.73%, 250=0.13%, 1000=0.07% lat (msec) : 2=4.65%, 4=5.08%, 10=7.81%, 20=8.46%, 50=37.08% lat (msec) : 100=28.48%, 250=6.28%, 500=0.03%, 2000=0.03% cpu : usr=0.08%, sys=4.72%, ctx=6716, 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=180694: Mon Aug 24 07:09:59 2026 read: IOPS=10, BW=43.9KiB/s (44.0kB/s)(5940KiB/135228msec) clat (usec): min=36, max=1124.9k, avg=49959.55, stdev=43216.75 lat (usec): min=36, max=1124.0k, avg=49966.66, stdev=43218.87 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 4293], 10.00th=[ 17695], | 20.00th=[ 23987], 30.00th=[ 30278], 40.00th=[ 36439], | 50.00th=[ 43254], 60.00th=[ 51119], 70.00th=[ 59507], | 80.00th=[ 71828], 90.00th=[ 87557], 95.00th=[ 105382], | 99.00th=[ 166724], 99.50th=[ 193987], 99.90th=[ 383779], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 111, per=24.70%, avg=43.72, stdev=17.81, samples=265 iops : min= 1, max= 27, avg=10.25, stdev= 4.48, samples=265 write: IOPS=11, BW=46.9KiB/s (48.1kB/s)(6348KiB/135228msec); 0 zone resets clat (usec): min=1048, max=283679, avg=38197.95, stdev=39683.13 lat (usec): min=1049, max=283682, avg=38203.42, stdev=39681.42 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1385], 10.00th=[ 2089], 20.00th=[ 4555], | 30.00th=[ 7898], 40.00th=[ 16188], 50.00th=[ 27919], 60.00th=[ 36963], | 70.00th=[ 49021], 80.00th=[ 65274], 90.00th=[ 92799], 95.00th=[116917], | 99.00th=[177210], 99.50th=[189793], 99.90th=[274727], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 108, per=25.27%, avg=46.74, stdev=22.08, samples=264 iops : min= 1, max= 27, avg=11.02, stdev= 5.55, samples=264 lat (usec) : 50=0.16%, 100=1.69%, 250=0.33%, 500=0.03%, 750=0.16% lat (msec) : 2=4.79%, 4=4.62%, 10=8.37%, 20=8.24%, 50=36.30% lat (msec) : 100=28.32%, 250=6.80%, 500=0.16%, 2000=0.03% cpu : usr=0.08%, sys=4.66%, ctx=6620, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180695: Mon Aug 24 07:09:59 2026 read: IOPS=11, BW=45.0KiB/s (46.1kB/s)(6028KiB/133821msec) clat (usec): min=50, max=359491, avg=48075.02, stdev=30927.39 lat (usec): min=51, max=359492, avg=48080.46, stdev=30928.52 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 498], 10.00th=[ 18220], 20.00th=[ 25035], | 30.00th=[ 30540], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 57934], 80.00th=[ 69731], 90.00th=[ 84411], 95.00th=[104334], | 99.00th=[147850], 99.50th=[164627], 99.90th=[221250], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 15, max= 111, per=25.52%, avg=45.17, stdev=18.09, samples=260 iops : min= 3, max= 27, avg=10.62, stdev= 4.52, samples=260 write: IOPS=11, BW=46.8KiB/s (47.9kB/s)(6260KiB/133821msec); 0 zone resets clat (usec): min=949, max=1310.7k, avg=38905.80, stdev=51676.85 lat (usec): min=950, max=1310.7k, avg=38915.31, stdev=51674.50 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1401], 10.00th=[ 1958], | 20.00th=[ 4113], 30.00th=[ 7373], 40.00th=[ 16450], | 50.00th=[ 28181], 60.00th=[ 36963], 70.00th=[ 49021], | 80.00th=[ 65799], 90.00th=[ 91751], 95.00th=[ 114820], | 99.00th=[ 177210], 99.50th=[ 206570], 99.90th=[ 358613], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 7, max= 103, per=25.25%, avg=46.71, stdev=20.16, samples=261 iops : min= 1, max= 25, avg=11.00, stdev= 5.06, samples=261 lat (usec) : 100=2.18%, 250=0.23%, 500=0.07%, 750=0.07%, 1000=0.07% lat (msec) : 2=5.24%, 4=4.56%, 10=7.88%, 20=7.36%, 50=38.15% lat (msec) : 100=27.31%, 250=6.71%, 500=0.16%, 2000=0.03% cpu : usr=0.09%, sys=4.79%, ctx=6611, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180696: Mon Aug 24 07:09:59 2026 read: IOPS=11, BW=44.6KiB/s (45.7kB/s)(6052KiB/135550msec) clat (usec): min=37, max=1175.8k, avg=49352.10, stdev=42425.39 lat (usec): min=37, max=1175.8k, avg=49353.84, stdev=42425.31 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 8979], 10.00th=[ 17695], | 20.00th=[ 24511], 30.00th=[ 30802], 40.00th=[ 36439], | 50.00th=[ 43254], 60.00th=[ 50070], 70.00th=[ 58459], | 80.00th=[ 70779], 90.00th=[ 86508], 95.00th=[ 104334], | 99.00th=[ 152044], 99.50th=[ 181404], 99.90th=[ 256902], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 7, max= 117, per=24.99%, avg=44.24, stdev=16.75, samples=267 iops : min= 1, max= 29, avg=10.39, stdev= 4.21, samples=267 write: IOPS=11, BW=46.0KiB/s (47.1kB/s)(6236KiB/135550msec); 0 zone resets clat (usec): min=1024, max=418862, avg=38823.32, stdev=39844.40 lat (usec): min=1025, max=418864, avg=38825.81, stdev=39843.92 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1401], 10.00th=[ 2245], 20.00th=[ 4228], | 30.00th=[ 8848], 40.00th=[ 17433], 50.00th=[ 27657], 60.00th=[ 39060], | 70.00th=[ 51643], 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[113771], | 99.00th=[160433], 99.50th=[191890], 99.90th=[274727], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 103, per=24.70%, avg=45.70, stdev=19.62, samples=266 iops : min= 1, max= 25, avg=10.75, stdev= 4.93, samples=266 lat (usec) : 50=0.20%, 100=1.69%, 250=0.33%, 500=0.10%, 750=0.03% lat (msec) : 2=4.49%, 4=5.31%, 10=6.93%, 20=8.50%, 50=36.75% lat (msec) : 100=28.61%, 250=6.90%, 500=0.13%, 2000=0.03% cpu : usr=0.07%, sys=4.70%, ctx=6651, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=177KiB/s (181kB/s), 43.9KiB/s-45.0KiB/s (44.0kB/s-46.1kB/s), io=23.4MiB (24.6MB), run=133821-135550msec WRITE: bw=185KiB/s (190kB/s), 46.0KiB/s-46.9KiB/s (47.1kB/s-48.1kB/s), io=24.6MiB (25.7MB), run=133821-135550msec fio: pid=180689, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=180689: Mon Aug 24 07:10:40 2026 read: IOPS=8, BW=32.0KiB/s (33.8kB/s)(5768KiB/174901msec) clat (msec): min=6, max=1331, avg=46.75, stdev=53.67 lat (msec): min=6, max=1331, avg=46.75, stdev=53.67 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 65], 90.00th=[ 101], 95.00th=[ 136], | 99.00th=[ 201], 99.50th=[ 243], 99.90th=[ 372], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 119, per=24.80%, avg=33.24, stdev=23.24, samples=337 iops : min= 1, max= 29, avg= 7.64, stdev= 5.85, samples=337 write: IOPS=8, BW=34.7KiB/s (35.5kB/s)(6072KiB/174901msec); 0 zone resets clat (msec): min=11, max=369, avg=70.48, stdev=48.58 lat (msec): min=11, max=369, avg=70.48, stdev=48.58 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 84], 80.00th=[ 106], 90.00th=[ 136], 95.00th=[ 165], | 99.00th=[ 230], 99.50th=[ 288], 99.90th=[ 359], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 7, max= 104, per=24.76%, avg=34.67, stdev=21.11, samples=340 iops : min= 1, max= 26, avg= 7.99, stdev= 5.34, samples=340 lat (msec) : 10=1.01%, 20=11.99%, 50=45.29%, 100=25.63%, 250=15.54% lat (msec) : 500=0.47%, 2000=0.03% cpu : usr=0.06%, sys=1.55%, ctx=4421, 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=1443,1518,0,0 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=180690: Mon Aug 24 07:10:40 2026 read: IOPS=8, BW=33.7KiB/s (34.5kB/s)(5940KiB/176246msec) clat (msec): min=5, max=1149, avg=45.01, stdev=49.41 lat (msec): min=5, max=1149, avg=45.01, stdev=49.41 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 63], 90.00th=[ 96], 95.00th=[ 133], | 99.00th=[ 203], 99.50th=[ 230], 99.90th=[ 317], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 111, per=25.60%, avg=34.30, stdev=23.48, samples=335 iops : min= 1, max= 27, avg= 7.90, stdev= 5.93, samples=335 write: IOPS=9, BW=36.0KiB/s (36.9kB/s)(6348KiB/176246msec); 0 zone resets clat (msec): min=12, max=488, avg=68.67, stdev=48.02 lat (msec): min=12, max=488, avg=68.68, stdev=48.02 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 65], | 70.00th=[ 80], 80.00th=[ 101], 90.00th=[ 134], 95.00th=[ 159], | 99.00th=[ 222], 99.50th=[ 268], 99.90th=[ 456], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 7, max= 111, per=25.56%, avg=35.79, stdev=22.03, samples=343 iops : min= 1, max= 27, avg= 8.27, stdev= 5.57, samples=343 lat (msec) : 10=1.46%, 20=13.18%, 50=44.95%, 100=25.65%, 250=14.26% lat (msec) : 500=0.46%, 2000=0.03% cpu : usr=0.07%, sys=1.60%, ctx=4735, 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= 0: pid=180691: Mon Aug 24 07:10:40 2026 read: IOPS=8, BW=34.2KiB/s (35.0kB/s)(6028KiB/176221msec) clat (msec): min=5, max=284, avg=45.46, stdev=39.82 lat (msec): min=5, max=284, avg=45.46, stdev=39.82 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 103], 95.00th=[ 131], | 99.00th=[ 190], 99.50th=[ 222], 99.90th=[ 264], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 127, per=25.75%, avg=34.50, stdev=22.84, samples=338 iops : min= 1, max= 31, avg= 7.95, stdev= 5.77, samples=338 write: IOPS=8, BW=35.5KiB/s (36.4kB/s)(6260KiB/176221msec); 0 zone resets clat (msec): min=12, max=1226, avg=68.58, stdev=55.41 lat (msec): min=12, max=1226, avg=68.58, stdev=55.41 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 65], | 70.00th=[ 80], 80.00th=[ 100], 90.00th=[ 130], 95.00th=[ 161], | 99.00th=[ 236], 99.50th=[ 279], 99.90th=[ 456], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 117, per=25.17%, avg=35.24, stdev=22.07, samples=343 iops : min= 1, max= 29, avg= 8.14, stdev= 5.58, samples=343 lat (msec) : 10=1.66%, 20=12.60%, 50=44.82%, 100=25.59%, 250=14.81% lat (msec) : 500=0.49%, 2000=0.03% cpu : usr=0.05%, sys=1.65%, ctx=4687, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180692: Mon Aug 24 07:10:40 2026 read: IOPS=8, BW=34.2KiB/s (35.0kB/s)(6052KiB/177010msec) clat (msec): min=6, max=353, avg=44.43, stdev=39.52 lat (msec): min=6, max=353, avg=44.43, stdev=39.52 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 65], 90.00th=[ 95], 95.00th=[ 129], | 99.00th=[ 199], 99.50th=[ 232], 99.90th=[ 309], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 152, per=26.20%, avg=35.10, stdev=24.35, samples=335 iops : min= 1, max= 38, avg= 8.11, stdev= 6.16, samples=335 write: IOPS=8, BW=35.2KiB/s (36.1kB/s)(6236KiB/177010msec); 0 zone resets clat (msec): min=13, max=1213, avg=70.18, stdev=57.88 lat (msec): min=13, max=1213, avg=70.18, stdev=57.88 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 79], 80.00th=[ 105], 90.00th=[ 142], 95.00th=[ 171], | 99.00th=[ 224], 99.50th=[ 275], 99.90th=[ 481], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7, max= 110, per=25.05%, avg=35.07, stdev=22.10, samples=345 iops : min= 1, max= 27, avg= 8.10, stdev= 5.58, samples=345 lat (msec) : 10=1.37%, 20=12.76%, 50=45.70%, 100=24.84%, 250=14.88% lat (msec) : 500=0.42%, 2000=0.03% cpu : usr=0.05%, sys=1.61%, ctx=4634, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=134KiB/s (138kB/s), 32.0KiB/s-34.2KiB/s (33.8kB/s-35.0kB/s), io=23.2MiB (24.4MB), run=174901-177010msec WRITE: bw=141KiB/s (144kB/s), 34.7KiB/s-36.0KiB/s (35.5kB/s-36.9kB/s), io=24.3MiB (25.5MB), run=174901-177010msec 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=180748: Mon Aug 24 07:11:27 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(5920KiB/35174msec) clat (usec): min=57, max=246403, avg=49456.30, stdev=33359.05 lat (usec): min=58, max=246404, avg=49463.84, stdev=33359.69 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 79], 10.00th=[ 15664], 20.00th=[ 25822], | 30.00th=[ 32900], 40.00th=[ 38011], 50.00th=[ 43254], 60.00th=[ 49021], | 70.00th=[ 58983], 80.00th=[ 71828], 90.00th=[ 92799], 95.00th=[109577], | 99.00th=[181404], 99.50th=[187696], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 62, max= 319, per=25.36%, avg=167.39, stdev=60.82, samples=69 iops : min= 3, max= 19, avg= 9.68, stdev= 3.83, samples=69 write: IOPS=11, BW=181KiB/s (185kB/s)(6368KiB/35174msec); 0 zone resets clat (usec): min=1628, max=271389, avg=41720.96, stdev=39828.15 lat (usec): min=1629, max=271392, avg=41726.19, stdev=39833.63 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2409], 10.00th=[ 4424], 20.00th=[ 7242], | 30.00th=[ 14615], 40.00th=[ 24249], 50.00th=[ 30016], 60.00th=[ 40633], | 70.00th=[ 52691], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[119014], | 99.00th=[179307], 99.50th=[233833], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 28, max= 380, per=26.04%, avg=180.70, stdev=71.32, samples=69 iops : min= 1, max= 23, avg=10.52, stdev= 4.43, samples=69 lat (usec) : 100=2.86%, 250=1.04%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.43%, 4=3.52%, 10=8.59%, 20=6.25%, 50=40.62% lat (msec) : 100=28.13%, 250=7.16%, 500=0.13% cpu : usr=0.08%, sys=4.62%, ctx=1817, 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=180749: Mon Aug 24 07:11:27 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(5744KiB/35599msec) clat (usec): min=47, max=310637, avg=51825.72, stdev=34773.11 lat (usec): min=47, max=310638, avg=51827.04, stdev=34773.10 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 77], 10.00th=[ 17695], 20.00th=[ 27395], | 30.00th=[ 33817], 40.00th=[ 40109], 50.00th=[ 46400], 60.00th=[ 54789], | 70.00th=[ 62653], 80.00th=[ 72877], 90.00th=[ 91751], 95.00th=[111674], | 99.00th=[160433], 99.50th=[200279], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 29, max= 318, per=24.33%, avg=160.56, stdev=61.06, samples=70 iops : min= 1, max= 19, avg= 9.24, stdev= 3.79, samples=70 write: IOPS=11, BW=184KiB/s (188kB/s)(6544KiB/35599msec); 0 zone resets clat (usec): min=1397, max=255266, avg=40694.53, stdev=40483.02 lat (usec): min=1399, max=255267, avg=40702.14, stdev=40484.48 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2245], 10.00th=[ 3589], 20.00th=[ 6128], | 30.00th=[ 11469], 40.00th=[ 19792], 50.00th=[ 29230], 60.00th=[ 36963], | 70.00th=[ 51119], 80.00th=[ 69731], 90.00th=[ 96994], 95.00th=[115868], | 99.00th=[185598], 99.50th=[193987], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 29, max= 475, per=26.46%, avg=183.64, stdev=94.00, samples=70 iops : min= 1, max= 29, avg=10.70, stdev= 5.87, samples=70 lat (usec) : 50=0.13%, 100=2.73%, 250=0.52%, 500=0.13% lat (msec) : 2=1.95%, 4=4.69%, 10=8.59%, 20=7.94%, 50=35.29% lat (msec) : 100=30.08%, 250=7.68%, 500=0.26% cpu : usr=0.07%, sys=4.86%, ctx=1788, 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=180750: Mon Aug 24 07:11:27 2026 read: IOPS=10, BW=176KiB/s (180kB/s)(6256KiB/35579msec) clat (usec): min=45, max=201135, avg=53426.14, stdev=33898.19 lat (usec): min=45, max=201136, avg=53427.67, stdev=33898.15 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 77], 10.00th=[ 17171], 20.00th=[ 26346], | 30.00th=[ 32637], 40.00th=[ 40109], 50.00th=[ 48497], 60.00th=[ 58459], | 70.00th=[ 67634], 80.00th=[ 78119], 90.00th=[ 96994], 95.00th=[113771], | 99.00th=[170918], 99.50th=[187696], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 31, max= 381, per=26.73%, avg=176.39, stdev=70.51, samples=70 iops : min= 1, max= 23, avg=10.24, stdev= 4.45, samples=70 write: IOPS=10, BW=170KiB/s (174kB/s)(6032KiB/35579msec); 0 zone resets clat (usec): min=1555, max=168226, avg=38704.37, stdev=33913.19 lat (usec): min=1558, max=168228, avg=38706.91, stdev=33913.22 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 3458], 10.00th=[ 4752], 20.00th=[ 8094], | 30.00th=[ 12911], 40.00th=[ 20055], 50.00th=[ 30016], 60.00th=[ 40109], | 70.00th=[ 49546], 80.00th=[ 69731], 90.00th=[ 87557], 95.00th=[101188], | 99.00th=[137364], 99.50th=[156238], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 31, max= 340, per=24.62%, avg=170.88, stdev=73.63, samples=69 iops : min= 1, max= 21, avg= 9.90, stdev= 4.65, samples=69 lat (usec) : 50=0.39%, 100=3.12%, 250=0.13%, 1000=0.13% lat (msec) : 2=0.91%, 4=3.26%, 10=8.33%, 20=9.38%, 50=35.29% lat (msec) : 100=31.77%, 250=7.29% cpu : usr=0.05%, sys=5.06%, ctx=1862, 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=180751: Mon Aug 24 07:11:27 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(6032KiB/36268msec) clat (usec): min=44, max=215200, avg=50277.36, stdev=33623.43 lat (usec): min=45, max=215202, avg=50278.64, stdev=33623.42 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 73], 10.00th=[ 988], 20.00th=[ 26346], | 30.00th=[ 34341], 40.00th=[ 40109], 50.00th=[ 44827], 60.00th=[ 52167], | 70.00th=[ 62129], 80.00th=[ 70779], 90.00th=[ 88605], 95.00th=[112722], | 99.00th=[160433], 99.50th=[210764], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 28, max= 382, per=25.01%, avg=165.06, stdev=77.37, samples=71 iops : min= 1, max= 23, avg= 9.52, stdev= 4.86, samples=71 write: IOPS=10, BW=172KiB/s (177kB/s)(6256KiB/36268msec); 0 zone resets clat (usec): min=1615, max=219238, avg=43439.40, stdev=42563.03 lat (usec): min=1617, max=219242, avg=43442.18, stdev=42563.11 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2278], 10.00th=[ 3720], 20.00th=[ 6980], | 30.00th=[ 11469], 40.00th=[ 19268], 50.00th=[ 28705], 60.00th=[ 39584], | 70.00th=[ 60031], 80.00th=[ 80217], 90.00th=[105382], 95.00th=[126354], | 99.00th=[189793], 99.50th=[193987], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 63, max= 319, per=24.88%, avg=172.66, stdev=60.49, samples=71 iops : min= 3, max= 19, avg=10.03, stdev= 3.76, samples=71 lat (usec) : 50=0.13%, 100=4.04%, 250=0.52%, 750=0.13%, 1000=0.13% lat (msec) : 2=1.82%, 4=4.30%, 10=8.07%, 20=8.33%, 50=34.11% lat (msec) : 100=28.39%, 250=10.03% cpu : usr=0.06%, sys=4.71%, ctx=1762, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=660KiB/s (676kB/s), 161KiB/s-176KiB/s (165kB/s-180kB/s), io=23.4MiB (24.5MB), run=35174-36268msec WRITE: bw=695KiB/s (712kB/s), 170KiB/s-184KiB/s (174kB/s-188kB/s), io=24.6MiB (25.8MB), run=35174-36268msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180743: Mon Aug 24 07:11:39 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(5920KiB/48577msec) clat (msec): min=7, max=248, avg=49.63, stdev=41.78 lat (msec): min=7, max=248, avg=49.63, stdev=41.78 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 52], 80.00th=[ 71], 90.00th=[ 110], 95.00th=[ 138], | 99.00th=[ 209], 99.50th=[ 226], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 411, per=25.48%, avg=125.62, stdev=81.47, samples=93 iops : min= 1, max= 25, avg= 7.09, stdev= 5.15, samples=93 write: IOPS=8, BW=131KiB/s (134kB/s)(6368KiB/48577msec); 0 zone resets clat (msec): min=14, max=373, avg=75.52, stdev=54.78 lat (msec): min=14, max=373, avg=75.52, stdev=54.79 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 69], | 70.00th=[ 84], 80.00th=[ 113], 90.00th=[ 155], 95.00th=[ 186], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 31, max= 383, per=25.22%, avg=130.61, stdev=80.58, samples=96 iops : min= 1, max= 23, avg= 7.41, stdev= 5.10, samples=96 lat (msec) : 10=1.43%, 20=8.59%, 50=45.57%, 100=25.78%, 250=17.84% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.50%, ctx=1095, 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=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=180744: Mon Aug 24 07:11:39 2026 read: IOPS=7, BW=120KiB/s (123kB/s)(5744KiB/47975msec) clat (msec): min=6, max=320, avg=49.37, stdev=46.01 lat (msec): min=6, max=320, avg=49.37, stdev=46.00 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 68], 90.00th=[ 120], 95.00th=[ 153], | 99.00th=[ 228], 99.50th=[ 255], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 415, per=25.08%, avg=123.66, stdev=79.06, samples=90 iops : min= 1, max= 25, avg= 6.97, stdev= 4.98, samples=90 write: IOPS=8, BW=136KiB/s (140kB/s)(6544KiB/47975msec); 0 zone resets clat (msec): min=13, max=312, avg=73.80, stdev=50.77 lat (msec): min=13, max=312, avg=73.81, stdev=50.77 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 69], | 70.00th=[ 86], 80.00th=[ 109], 90.00th=[ 140], 95.00th=[ 176], | 99.00th=[ 279], 99.50th=[ 300], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 351, per=26.37%, avg=136.60, stdev=78.71, samples=92 iops : min= 1, max= 21, avg= 7.78, stdev= 5.01, samples=92 lat (msec) : 10=0.91%, 20=11.07%, 50=43.88%, 100=27.34%, 250=15.76% lat (msec) : 500=1.04% cpu : usr=0.05%, sys=1.67%, ctx=1195, 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=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=180745: Mon Aug 24 07:11:39 2026 read: IOPS=8, BW=132KiB/s (136kB/s)(6256KiB/47232msec) clat (msec): min=7, max=321, avg=46.99, stdev=41.37 lat (msec): min=7, max=321, avg=47.00, stdev=41.37 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 46], 80.00th=[ 63], 90.00th=[ 103], 95.00th=[ 129], | 99.00th=[ 239], 99.50th=[ 251], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 30, max= 476, per=27.20%, avg=134.10, stdev=92.15, samples=92 iops : min= 1, max= 29, avg= 7.62, stdev= 5.82, samples=92 write: IOPS=7, BW=128KiB/s (131kB/s)(6032KiB/47232msec); 0 zone resets clat (msec): min=18, max=302, avg=76.00, stdev=49.34 lat (msec): min=18, max=302, avg=76.01, stdev=49.35 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 37], | 30.00th=[ 45], 40.00th=[ 52], 50.00th=[ 64], 60.00th=[ 72], | 70.00th=[ 85], 80.00th=[ 107], 90.00th=[ 150], 95.00th=[ 180], | 99.00th=[ 251], 99.50th=[ 275], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 383, per=24.33%, avg=126.02, stdev=67.88, samples=93 iops : min= 1, max= 23, avg= 7.12, stdev= 4.28, samples=93 lat (msec) : 10=0.52%, 20=10.03%, 50=45.96%, 100=27.21%, 250=15.63% lat (msec) : 500=0.65% cpu : usr=0.06%, sys=1.63%, ctx=1157, 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=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=180746: Mon Aug 24 07:11:39 2026 read: IOPS=8, BW=128KiB/s (131kB/s)(6032KiB/47030msec) clat (msec): min=9, max=277, avg=49.85, stdev=40.54 lat (msec): min=9, max=277, avg=49.85, stdev=40.54 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 67], 90.00th=[ 110], 95.00th=[ 144], | 99.00th=[ 228], 99.50th=[ 247], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 352, per=25.93%, avg=127.84, stdev=76.76, samples=93 iops : min= 1, max= 22, avg= 7.23, stdev= 4.90, samples=93 write: IOPS=8, BW=133KiB/s (136kB/s)(6256KiB/47030msec); 0 zone resets clat (msec): min=16, max=365, avg=71.73, stdev=49.73 lat (msec): min=16, max=365, avg=71.73, stdev=49.73 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 42], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 68], | 70.00th=[ 81], 80.00th=[ 104], 90.00th=[ 136], 95.00th=[ 161], | 99.00th=[ 266], 99.50th=[ 309], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 31, max= 447, per=25.93%, avg=134.30, stdev=76.30, samples=92 iops : min= 1, max= 27, avg= 7.64, stdev= 4.81, samples=92 lat (msec) : 10=0.39%, 20=8.20%, 50=44.27%, 100=30.73%, 250=15.63% lat (msec) : 500=0.78% cpu : usr=0.07%, sys=1.68%, ctx=1162, 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=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=493KiB/s (505kB/s), 120KiB/s-132KiB/s (123kB/s-136kB/s), io=23.4MiB (24.5MB), run=47030-48577msec WRITE: bw=519KiB/s (531kB/s), 128KiB/s-136KiB/s (131kB/s-140kB/s), io=24.6MiB (25.8MB), run=47030-48577msec 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=180763: Mon Aug 24 07:11:56 2026 read: IOPS=2, BW=2370KiB/s (2426kB/s)(7168KiB/3025msec) clat (usec): min=671, max=529514, avg=230819.87, stdev=168082.71 lat (usec): min=672, max=529515, avg=230821.31, stdev=168082.76 clat percentiles (usec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[107480], | 30.00th=[175113], 40.00th=[175113], 50.00th=[221250], 60.00th=[261096], | 70.00th=[261096], 80.00th=[320865], 90.00th=[530580], 95.00th=[530580], | 99.00th=[530580], 99.50th=[530580], 99.90th=[530580], 99.95th=[530580], | 99.99th=[530580] bw ( KiB/s): min= 2011, max= 4079, per=66.20%, avg=2711.00, stdev=971.17, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1693KiB/s (1733kB/s)(5120KiB/3025msec); 0 zone resets clat (msec): min=127, max=344, avg=241.60, stdev=93.16 lat (msec): min=127, max=344, avg=241.76, stdev=93.12 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 2011, max= 6095, per=70.70%, avg=4053.00, stdev=2887.82, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.07%, sys=17.27%, ctx=176, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180764: Mon Aug 24 07:11:56 2026 read: IOPS=0, BW=410KiB/s (419kB/s)(2048KiB/5001msec) clat (msec): min=123, max=320, avg=222.17, stdev=139.64 lat (msec): min=123, max=320, avg=222.17, stdev=139.64 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 2039, max= 2048, per=49.90%, avg=2043.50, stdev= 6.36, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=2048KiB/s (2097kB/s)(10.0MiB/5001msec); 0 zone resets clat (msec): min=171, max=842, avg=430.91, stdev=213.38 lat (msec): min=172, max=842, avg=431.28, stdev=213.35 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 199], | 30.00th=[ 251], 40.00th=[ 376], 50.00th=[ 384], 60.00th=[ 388], | 70.00th=[ 460], 80.00th=[ 550], 90.00th=[ 684], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1992, max= 6131, per=53.15%, avg=3047.33, stdev=1725.06, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.83, samples=6 lat (msec) : 250=25.00%, 500=50.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=13.46%, ctx=216, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180766: Mon Aug 24 07:11:56 2026 read: IOPS=1, BW=1528KiB/s (1565kB/s)(6144KiB/4021msec) clat (msec): min=7, max=425, avg=203.64, stdev=148.59 lat (msec): min=7, max=425, avg=203.64, stdev=148.59 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 80], | 30.00th=[ 80], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 218], | 70.00th=[ 288], 80.00th=[ 288], 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= 1973, max= 4096, per=61.78%, avg=2529.75, stdev=1044.56, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1528KiB/s (1565kB/s)(6144KiB/4021msec); 0 zone resets clat (msec): min=188, max=845, avg=461.55, stdev=286.19 lat (msec): min=189, max=846, avg=461.84, stdev=286.11 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 584], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1973, max= 3976, per=43.62%, avg=2501.00, stdev=983.81, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 10=8.33%, 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67% lat (msec) : 1000=8.33% cpu : usr=0.02%, sys=13.18%, 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=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=180767: Mon Aug 24 07:11:56 2026 read: IOPS=1, BW=1186KiB/s (1214kB/s)(5120KiB/4318msec) clat (usec): min=822, max=279985, avg=109449.87, stdev=146980.07 lat (usec): min=823, max=279985, avg=109450.98, stdev=146980.35 clat percentiles (usec): | 1.00th=[ 824], 5.00th=[ 824], 10.00th=[ 824], 20.00th=[ 824], | 30.00th=[ 2737], 40.00th=[ 2737], 50.00th=[ 3163], 60.00th=[ 3163], | 70.00th=[261096], 80.00th=[261096], 90.00th=[278922], 95.00th=[278922], | 99.00th=[278922], 99.50th=[278922], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 3946, max= 4096, per=98.19%, avg=4021.00, stdev=106.07, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1660KiB/s (1700kB/s)(7168KiB/4318msec); 0 zone resets clat (msec): min=200, max=1092, avg=497.17, stdev=371.51 lat (msec): min=205, max=1092, avg=498.22, stdev=371.29 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 215], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 384], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 961], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1973, max= 2048, per=35.17%, avg=2016.33, stdev=30.40, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (usec) : 1000=8.33% lat (msec) : 4=16.67%, 250=25.00%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=13.48%, ctx=175, 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=4095KiB/s (4193kB/s), 410KiB/s-2370KiB/s (419kB/s-2426kB/s), io=20.0MiB (20.0MB), run=3025-5001msec WRITE: bw=5733KiB/s (5871kB/s), 1528KiB/s-2048KiB/s (1565kB/s-2097kB/s), io=28.0MiB (29.4MB), run=3025-5001msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180768: Mon Aug 24 07:11:57 2026 read: IOPS=1, BW=1264KiB/s (1294kB/s)(7168KiB/5671msec) clat (msec): min=115, max=1033, avg=402.43, stdev=424.30 lat (msec): min=115, max=1033, avg=402.43, stdev=424.30 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 118], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 150], 60.00th=[ 264], | 70.00th=[ 264], 80.00th=[ 1003], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 2035, max= 4087, per=97.25%, avg=3395.00, stdev=1177.86, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=903KiB/s (925kB/s)(5120KiB/5671msec); 0 zone resets clat (msec): min=133, max=1022, avg=446.27, stdev=340.06 lat (msec): min=133, max=1022, avg=446.47, stdev=340.00 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 134], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1984, max= 3938, per=54.26%, avg=2652.33, stdev=1113.71, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=41.67%, 500=33.33%, 2000=25.00% cpu : usr=0.00%, sys=4.92%, ctx=110, 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=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=180769: Mon Aug 24 07:11:57 2026 read: IOPS=0, BW=349KiB/s (358kB/s)(2048KiB/5865msec) clat (msec): min=151, max=626, avg=388.97, stdev=335.98 lat (msec): min=151, max=626, avg=388.98, stdev=335.98 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 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= 2011, max= 2035, per=57.95%, avg=2023.00, stdev=16.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1746KiB/s (1788kB/s)(10.0MiB/5865msec); 0 zone resets clat (msec): min=129, max=1677, avg=494.65, stdev=473.63 lat (msec): min=129, max=1677, avg=495.22, stdev=473.87 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 131], | 30.00th=[ 199], 40.00th=[ 249], 50.00th=[ 253], 60.00th=[ 279], | 70.00th=[ 667], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 1969, max= 4087, per=61.91%, avg=3026.17, stdev=1116.75, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=41.67%, 500=16.67%, 750=33.33%, 2000=8.33% cpu : usr=0.00%, sys=3.77%, ctx=99, 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=180770: Mon Aug 24 07:11:57 2026 read: IOPS=1, BW=1222KiB/s (1251kB/s)(6144KiB/5029msec) clat (msec): min=93, max=346, avg=221.18, stdev=88.46 lat (msec): min=93, max=346, avg=221.18, stdev=88.46 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 230], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1984, max= 2043, per=57.91%, avg=2021.60, stdev=24.37, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1222KiB/s (1251kB/s)(6144KiB/5029msec); 0 zone resets clat (msec): min=199, max=1151, avg=528.92, stdev=340.79 lat (msec): min=199, max=1152, avg=529.23, stdev=341.17 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 527], | 70.00th=[ 558], 80.00th=[ 558], 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= 1984, max= 4071, per=49.77%, avg=2432.80, stdev=916.07, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=4.97%, ctx=148, 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=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=180771: Mon Aug 24 07:11:57 2026 read: IOPS=0, BW=890KiB/s (911kB/s)(5120KiB/5753msec) clat (msec): min=81, max=553, avg=225.34, stdev=193.45 lat (msec): min=81, max=553, avg=225.34, stdev=193.45 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 180], 60.00th=[ 180], | 70.00th=[ 228], 80.00th=[ 228], 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= 2011, max= 4071, per=77.58%, avg=2708.33, stdev=1180.21, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1246KiB/s (1276kB/s)(7168KiB/5753msec); 0 zone resets clat (msec): min=263, max=1122, avg=592.14, stdev=371.42 lat (msec): min=264, max=1122, avg=592.26, stdev=371.40 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 296], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 451], 60.00th=[ 514], | 70.00th=[ 514], 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= 1969, max= 4087, per=48.32%, avg=2362.00, stdev=845.47, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=16.67%, 250=16.67%, 500=33.33%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=4.38%, ctx=112, 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=3492KiB/s (3576kB/s), 349KiB/s-1264KiB/s (358kB/s-1294kB/s), io=20.0MiB (20.0MB), run=5029-5865msec WRITE: bw=4889KiB/s (5006kB/s), 903KiB/s-1746KiB/s (925kB/s-1788kB/s), io=28.0MiB (29.4MB), run=5029-5865msec 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=180779: Mon Aug 24 07:12:13 2026 read: IOPS=0, BW=4076KiB/s (4173kB/s)(12.0MiB/3015msec) clat (msec): min=772, max=1072, avg=955.15, stdev=160.58 lat (msec): min=772, max=1072, avg=955.15, stdev=160.58 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.26%, ctx=42, 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=180780: Mon Aug 24 07:12:13 2026 read: IOPS=0, BW=1192KiB/s (1220kB/s)(4096KiB/3437msec) clat (nsec): min=650293k, max=650293k, avg=650292606.00, stdev= 0.00 lat (nsec): min=650298k, max=650298k, avg=650297732.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2383KiB/s (2441kB/s)(8192KiB/3437msec); 0 zone resets clat (msec): min=871, max=1811, avg=1341.51, stdev=665.28 lat (msec): min=871, max=1815, avg=1343.78, stdev=667.69 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 1804], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8031, max= 8031, per=84.24%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.17%, ctx=62, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180781: Mon Aug 24 07:12:13 2026 write: IOPS=0, BW=3738KiB/s (3828kB/s)(12.0MiB/3287msec); 0 zone resets clat (msec): min=250, max=1549, avg=1055.57, stdev=702.99 lat (msec): min=252, max=1552, avg=1057.37, stdev=702.72 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 1368], 50.00th=[ 1368], 60.00th=[ 1368], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8031, max= 8143, per=84.83%, avg=8087.00, stdev=79.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.90%, ctx=39, 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=180782: Mon Aug 24 07:12:13 2026 write: IOPS=1, BW=5578KiB/s (5712kB/s)(12.0MiB/2203msec); 0 zone resets clat (msec): min=537, max=797, avg=677.56, stdev=131.02 lat (msec): min=537, max=798, avg=678.52, stdev=131.72 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 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= 8031, max= 8126, per=84.74%, avg=8078.50, stdev=67.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=5.99%, ctx=51, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4767KiB/s (4881kB/s), 1192KiB/s-4076KiB/s (1220kB/s-4173kB/s), io=16.0MiB (16.8MB), run=3015-3437msec WRITE: bw=9534KiB/s (9763kB/s), 2383KiB/s-5578KiB/s (2441kB/s-5712kB/s), io=32.0MiB (33.6MB), run=2203-3437msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180783: Mon Aug 24 07:12:14 2026 read: IOPS=1, BW=4566KiB/s (4676kB/s)(12.0MiB/2691msec) clat (msec): min=601, max=1025, avg=819.16, stdev=212.41 lat (msec): min=601, max=1025, avg=819.16, stdev=212.41 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=12.63%, ctx=210, 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=180784: Mon Aug 24 07:12:14 2026 read: IOPS=0, BW=1082KiB/s (1108kB/s)(4096KiB/3784msec) clat (nsec): min=854597k, max=854597k, avg=854596893.00, stdev= 0.00 lat (nsec): min=854601k, max=854601k, avg=854600855.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2165KiB/s (2217kB/s)(8192KiB/3784msec); 0 zone resets clat (msec): min=1151, max=1700, avg=1425.88, stdev=387.87 lat (msec): min=1152, max=1700, avg=1426.67, stdev=387.58 clat percentiles (msec): | 1.00th=[ 1150], 5.00th=[ 1150], 10.00th=[ 1150], 20.00th=[ 1150], | 30.00th=[ 1150], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1703], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8159, max= 8159, per=94.23%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.29%, ctx=133, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180785: Mon Aug 24 07:12:14 2026 write: IOPS=0, BW=3333KiB/s (3413kB/s)(12.0MiB/3687msec); 0 zone resets clat (msec): min=288, max=1720, avg=1167.77, stdev=769.64 lat (msec): min=289, max=1720, avg=1168.31, stdev=769.67 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 1502], 50.00th=[ 1502], 60.00th=[ 1502], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8159, max= 8175, per=94.32%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.06%, ctx=61, 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=180786: Mon Aug 24 07:12:14 2026 write: IOPS=0, BW=3981KiB/s (4076kB/s)(12.0MiB/3087msec); 0 zone resets clat (msec): min=320, max=1604, avg=928.77, stdev=644.60 lat (msec): min=323, max=1607, avg=930.89, stdev=644.68 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8126, max= 8126, per=93.84%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.76%, ctx=67, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4330KiB/s (4434kB/s), 1082KiB/s-4566KiB/s (1108kB/s-4676kB/s), io=16.0MiB (16.8MB), run=2691-3784msec WRITE: bw=8660KiB/s (8867kB/s), 2165KiB/s-3981KiB/s (2217kB/s-4076kB/s), io=32.0MiB (33.6MB), run=3087-3784msec