== sanity test 398b: DIO and buffer IO race ============== 12:12:12 (1786205532) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.42552 s, 14.7 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=194630: Sat Aug 8 12:13:42 2026 read: IOPS=19, BW=76.4KiB/s (78.2kB/s)(5992KiB/78461msec) clat (usec): min=43, max=745346, avg=29030.91, stdev=24760.78 lat (usec): min=44, max=745347, avg=29033.50, stdev=24760.21 clat percentiles (usec): | 1.00th=[ 78], 5.00th=[ 9765], 10.00th=[ 13042], 20.00th=[ 16188], | 30.00th=[ 18744], 40.00th=[ 21890], 50.00th=[ 25560], 60.00th=[ 29230], | 70.00th=[ 33817], 80.00th=[ 39060], 90.00th=[ 49021], 95.00th=[ 58459], | 99.00th=[ 85459], 99.50th=[ 99091], 99.90th=[128451], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 6, max= 135, per=25.00%, avg=76.00, stdev=21.22, samples=155 iops : min= 1, max= 33, avg=18.39, stdev= 5.32, samples=155 write: IOPS=20, BW=80.2KiB/s (82.2kB/s)(6296KiB/78461msec); 0 zone resets clat (usec): min=1239, max=155808, avg=22010.05, stdev=19778.65 lat (usec): min=1240, max=155809, avg=22013.15, stdev=19780.99 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2376], 10.00th=[ 3097], 20.00th=[ 4293], | 30.00th=[ 7308], 40.00th=[ 12780], 50.00th=[ 17957], 60.00th=[ 21890], | 70.00th=[ 27919], 80.00th=[ 35914], 90.00th=[ 47973], 95.00th=[ 61080], | 99.00th=[ 85459], 99.50th=[ 96994], 99.90th=[149947], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 23, max= 183, per=25.30%, avg=80.46, stdev=27.96, samples=154 iops : min= 5, max= 45, avg=19.52, stdev= 7.02, samples=154 lat (usec) : 50=0.03%, 100=0.55%, 250=0.78%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=1.56%, 4=7.94%, 10=9.15%, 20=25.13%, 50=45.44% lat (msec) : 100=8.66%, 250=0.39%, 750=0.03% cpu : usr=0.13%, sys=14.06%, ctx=8258, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194631: Sat Aug 8 12:13:42 2026 read: IOPS=19, BW=76.5KiB/s (78.3kB/s)(5940KiB/77696msec) clat (usec): min=52, max=152725, avg=29026.38, stdev=16444.25 lat (usec): min=53, max=152726, avg=29029.20, stdev=16444.38 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 9634], 10.00th=[ 13435], 20.00th=[ 16581], | 30.00th=[ 19268], 40.00th=[ 22152], 50.00th=[ 26084], 60.00th=[ 30016], | 70.00th=[ 34866], 80.00th=[ 40109], 90.00th=[ 47973], 95.00th=[ 57410], | 99.00th=[ 87557], 99.50th=[101188], 99.90th=[122160], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 6, max= 135, per=24.97%, avg=75.91, stdev=21.98, samples=154 iops : min= 1, max= 33, avg=18.37, stdev= 5.53, samples=154 write: IOPS=20, BW=81.7KiB/s (83.7kB/s)(6348KiB/77696msec); 0 zone resets clat (usec): min=1005, max=738121, avg=21593.42, stdev=25846.94 lat (usec): min=1007, max=738123, avg=21597.10, stdev=25847.03 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 2311], 10.00th=[ 2835], 20.00th=[ 4228], | 30.00th=[ 6587], 40.00th=[ 12387], 50.00th=[ 16909], 60.00th=[ 21627], | 70.00th=[ 27132], 80.00th=[ 35914], 90.00th=[ 46400], 95.00th=[ 56886], | 99.00th=[ 79168], 99.50th=[ 90702], 99.90th=[147850], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 24, max= 151, per=25.64%, avg=81.54, stdev=28.10, samples=153 iops : min= 6, max= 37, avg=19.78, stdev= 7.00, samples=153 lat (usec) : 100=0.81%, 250=0.68%, 500=0.07%, 750=0.07% lat (msec) : 2=1.53%, 4=8.20%, 10=9.77%, 20=23.50%, 50=46.94% lat (msec) : 100=7.98%, 250=0.42%, 750=0.03% cpu : usr=0.13%, sys=14.35%, ctx=8300, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194632: Sat Aug 8 12:13:42 2026 read: IOPS=19, BW=76.4KiB/s (78.3kB/s)(6028KiB/78858msec) clat (usec): min=32, max=103343, avg=28146.31, stdev=16003.80 lat (usec): min=32, max=103344, avg=28149.67, stdev=16006.33 clat percentiles (usec): | 1.00th=[ 71], 5.00th=[ 10814], 10.00th=[ 13173], 20.00th=[ 16188], | 30.00th=[ 19006], 40.00th=[ 21627], 50.00th=[ 24511], 60.00th=[ 28181], | 70.00th=[ 32637], 80.00th=[ 38536], 90.00th=[ 47449], 95.00th=[ 58459], | 99.00th=[ 85459], 99.50th=[ 89654], 99.90th=[102237], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 16, max= 128, per=25.10%, avg=76.30, stdev=22.11, samples=155 iops : min= 4, max= 32, avg=18.48, stdev= 5.55, samples=155 write: IOPS=19, BW=79.4KiB/s (81.3kB/s)(6260KiB/78858msec); 0 zone resets clat (usec): min=1247, max=748792, avg=23049.57, stdev=27392.84 lat (usec): min=1249, max=748796, avg=23056.12, stdev=27392.63 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 2212], 10.00th=[ 2900], 20.00th=[ 4293], | 30.00th=[ 7046], 40.00th=[ 13829], 50.00th=[ 18220], 60.00th=[ 22938], | 70.00th=[ 28181], 80.00th=[ 36439], 90.00th=[ 50070], 95.00th=[ 63701], | 99.00th=[ 93848], 99.50th=[106431], 99.90th=[147850], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 23, max= 167, per=24.88%, avg=79.10, stdev=25.74, samples=155 iops : min= 5, max= 41, avg=19.19, stdev= 6.45, samples=155 lat (usec) : 50=0.07%, 100=0.94%, 250=0.42%, 500=0.13%, 750=0.03% lat (msec) : 2=1.66%, 4=7.81%, 10=8.46%, 20=24.97%, 50=46.26% lat (msec) : 100=8.82%, 250=0.39%, 750=0.03% cpu : usr=0.12%, sys=14.10%, ctx=8321, 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=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=194633: Sat Aug 8 12:13:42 2026 read: IOPS=19, BW=77.6KiB/s (79.5kB/s)(6052KiB/77964msec) clat (usec): min=35, max=177939, avg=28220.23, stdev=16469.49 lat (usec): min=35, max=177940, avg=28223.98, stdev=16470.02 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 10552], 10.00th=[ 12911], 20.00th=[ 16188], | 30.00th=[ 18744], 40.00th=[ 21627], 50.00th=[ 25035], 60.00th=[ 29492], | 70.00th=[ 33817], 80.00th=[ 38536], 90.00th=[ 47449], 95.00th=[ 54789], | 99.00th=[ 81265], 99.50th=[103285], 99.90th=[166724], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 23, max= 120, per=25.65%, avg=77.98, stdev=19.47, samples=152 iops : min= 5, max= 30, avg=18.88, stdev= 4.90, samples=152 write: IOPS=19, BW=79.0KiB/s (81.9kB/s)(6236KiB/77964msec); 0 zone resets clat (usec): min=1099, max=768525, avg=22391.97, stdev=26876.33 lat (usec): min=1099, max=768529, avg=22395.51, stdev=26876.57 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 2180], 10.00th=[ 2900], 20.00th=[ 4293], | 30.00th=[ 7111], 40.00th=[ 13173], 50.00th=[ 17695], 60.00th=[ 22676], | 70.00th=[ 27919], 80.00th=[ 35914], 90.00th=[ 49546], 95.00th=[ 58983], | 99.00th=[ 82314], 99.50th=[101188], 99.90th=[121111], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 23, max= 151, per=25.14%, avg=79.96, stdev=27.62, samples=153 iops : min= 5, max= 37, avg=19.39, stdev= 6.95, samples=153 lat (usec) : 50=0.10%, 100=0.88%, 250=0.72%, 500=0.13% lat (msec) : 2=1.99%, 4=7.32%, 10=8.69%, 20=25.26%, 50=46.03% lat (msec) : 100=8.37%, 250=0.49%, 1000=0.03% cpu : usr=0.13%, sys=14.25%, ctx=8225, 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=304KiB/s (312kB/s), 76.4KiB/s-77.6KiB/s (78.2kB/s-79.5kB/s), io=23.4MiB (24.6MB), run=77696-78858msec WRITE: bw=319KiB/s (326kB/s), 79.4KiB/s-81.7KiB/s (81.3kB/s-83.7kB/s), io=24.6MiB (25.7MB), run=77696-78858msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194626: Sat Aug 8 12:14:03 2026 read: IOPS=15, BW=60.9KiB/s (62.3kB/s)(5992KiB/98447msec) clat (msec): min=5, max=748, avg=26.16, stdev=28.27 lat (msec): min=5, max=748, avg=26.16, stdev=28.27 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 38], 90.00th=[ 56], 95.00th=[ 72], | 99.00th=[ 109], 99.50th=[ 114], 99.90th=[ 167], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 8, max= 208, per=25.38%, avg=61.17, stdev=39.90, samples=192 iops : min= 2, max= 52, avg=14.73, stdev=10.01, samples=192 write: IOPS=15, BW=63.0KiB/s (65.5kB/s)(6296KiB/98447msec); 0 zone resets clat (msec): min=7, max=181, avg=37.43, stdev=24.97 lat (msec): min=7, max=181, avg=37.44, stdev=24.97 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 56], 90.00th=[ 71], 95.00th=[ 84], | 99.00th=[ 123], 99.50th=[ 150], 99.90th=[ 182], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 7, max= 200, per=25.28%, avg=63.97, stdev=38.35, samples=193 iops : min= 1, max= 50, avg=15.43, stdev= 9.64, samples=193 lat (msec) : 10=9.60%, 20=32.13%, 50=39.45%, 100=16.86%, 250=1.92% lat (msec) : 750=0.03% cpu : usr=0.09%, sys=6.50%, ctx=5779, 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=194627: Sat Aug 8 12:14:03 2026 read: IOPS=15, BW=60.0KiB/s (61.4kB/s)(5940KiB/99000msec) clat (msec): min=4, max=743, avg=25.88, stdev=27.99 lat (msec): min=4, max=743, avg=25.88, stdev=27.99 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 56], 95.00th=[ 72], | 99.00th=[ 107], 99.50th=[ 121], 99.90th=[ 144], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 232, per=24.75%, avg=59.66, stdev=41.00, samples=195 iops : min= 1, max= 58, avg=14.35, stdev=10.29, samples=195 write: IOPS=16, BW=64.1KiB/s (65.7kB/s)(6348KiB/99000msec); 0 zone resets clat (msec): min=8, max=186, avg=37.95, stdev=25.31 lat (msec): min=8, max=186, avg=37.96, stdev=25.31 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 57], 90.00th=[ 74], 95.00th=[ 89], | 99.00th=[ 126], 99.50th=[ 142], 99.90th=[ 171], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 8, max= 192, per=25.14%, avg=63.59, stdev=37.59, samples=195 iops : min= 2, max= 48, avg=15.34, stdev= 9.43, samples=195 lat (msec) : 10=10.03%, 20=30.83%, 50=40.62%, 100=16.44%, 250=2.05% lat (msec) : 750=0.03% cpu : usr=0.10%, sys=6.32%, ctx=5788, 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=194628: Sat Aug 8 12:14:03 2026 read: IOPS=15, BW=61.5KiB/s (62.9kB/s)(6028KiB/98062msec) clat (msec): min=4, max=164, avg=25.73, stdev=21.18 lat (msec): min=4, max=164, avg=25.73, stdev=21.18 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 55], 95.00th=[ 68], | 99.00th=[ 104], 99.50th=[ 124], 99.90th=[ 140], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 7, max= 224, per=25.59%, avg=61.66, stdev=39.59, samples=193 iops : min= 1, max= 56, avg=14.86, stdev= 9.92, samples=193 write: IOPS=15, BW=63.8KiB/s (65.4kB/s)(6260KiB/98062msec); 0 zone resets clat (msec): min=8, max=740, avg=37.67, stdev=30.14 lat (msec): min=8, max=740, avg=37.67, stdev=30.14 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 55], 90.00th=[ 71], 95.00th=[ 87], | 99.00th=[ 116], 99.50th=[ 150], 99.90th=[ 180], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 184, per=25.17%, avg=63.68, stdev=38.77, samples=194 iops : min= 1, max= 46, avg=15.36, stdev= 9.74, samples=194 lat (msec) : 10=10.09%, 20=30.50%, 50=40.59%, 100=17.15%, 250=1.63% lat (msec) : 750=0.03% cpu : usr=0.12%, sys=6.37%, ctx=5813, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194629: Sat Aug 8 12:14:03 2026 read: IOPS=15, BW=60.0KiB/s (62.5kB/s)(6052KiB/99226msec) clat (msec): min=4, max=151, avg=26.37, stdev=22.12 lat (msec): min=4, max=151, avg=26.38, stdev=22.12 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 58], 95.00th=[ 73], | 99.00th=[ 109], 99.50th=[ 118], 99.90th=[ 140], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 7, max= 232, per=25.32%, avg=61.01, stdev=40.34, samples=195 iops : min= 1, max= 58, avg=14.69, stdev=10.14, samples=195 write: IOPS=15, BW=62.8KiB/s (64.4kB/s)(6236KiB/99226msec); 0 zone resets clat (msec): min=8, max=741, avg=37.83, stdev=30.39 lat (msec): min=8, max=741, avg=37.83, stdev=30.39 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 55], 90.00th=[ 71], 95.00th=[ 88], | 99.00th=[ 118], 99.50th=[ 138], 99.90th=[ 178], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 199, per=24.69%, avg=62.45, stdev=38.64, samples=196 iops : min= 1, max= 49, avg=15.06, stdev= 9.69, samples=196 lat (msec) : 10=10.38%, 20=31.87%, 50=37.86%, 100=17.87%, 250=1.99% lat (msec) : 750=0.03% cpu : usr=0.10%, sys=6.32%, ctx=5718, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=242KiB/s (248kB/s), 60.0KiB/s-61.5KiB/s (61.4kB/s-62.9kB/s), io=23.4MiB (24.6MB), run=98062-99226msec WRITE: bw=253KiB/s (259kB/s), 62.8KiB/s-64.1KiB/s (64.4kB/s-65.7kB/s), io=24.6MiB (25.7MB), run=98062-99226msec 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=194671: Sat Aug 8 12:14:32 2026 read: IOPS=16, BW=269KiB/s (276kB/s)(5920KiB/21996msec) clat (usec): min=42, max=125214, avg=30265.47, stdev=17821.45 lat (usec): min=42, max=125214, avg=30266.82, stdev=17821.41 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 155], 10.00th=[ 12256], 20.00th=[ 17171], | 30.00th=[ 20579], 40.00th=[ 24249], 50.00th=[ 27919], 60.00th=[ 32113], | 70.00th=[ 37487], 80.00th=[ 42730], 90.00th=[ 52167], 95.00th=[ 60556], | 99.00th=[ 82314], 99.50th=[113771], 99.90th=[125305], 99.95th=[125305], | 99.99th=[125305] bw ( KiB/s): min= 126, max= 416, per=25.13%, avg=266.84, stdev=69.34, samples=43 iops : min= 7, max= 26, avg=16.00, stdev= 4.42, samples=43 write: IOPS=18, BW=290KiB/s (296kB/s)(6368KiB/21996msec); 0 zone resets clat (msec): min=2, max=128, avg=26.76, stdev=20.90 lat (msec): min=2, max=128, avg=26.77, stdev=20.90 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 36], 80.00th=[ 45], 90.00th=[ 57], 95.00th=[ 67], | 99.00th=[ 89], 99.50th=[ 116], 99.90th=[ 129], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 127, max= 479, per=25.90%, avg=289.33, stdev=88.22, samples=43 iops : min= 7, max= 29, avg=17.42, stdev= 5.49, samples=43 lat (usec) : 50=0.13%, 100=1.30%, 250=2.21%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=0.13%, 4=4.17%, 10=9.11%, 20=19.53%, 50=49.87% lat (msec) : 100=12.50%, 250=0.65% cpu : usr=0.15%, sys=17.56%, ctx=2504, 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=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=194672: Sat Aug 8 12:14:32 2026 read: IOPS=15, BW=255KiB/s (261kB/s)(5744KiB/22552msec) clat (usec): min=54, max=124278, avg=32814.84, stdev=19278.60 lat (usec): min=55, max=124278, avg=32816.61, stdev=19278.88 clat percentiles (usec): | 1.00th=[ 69], 5.00th=[ 281], 10.00th=[ 14484], 20.00th=[ 19006], | 30.00th=[ 22938], 40.00th=[ 26346], 50.00th=[ 29754], 60.00th=[ 33817], | 70.00th=[ 39060], 80.00th=[ 42730], 90.00th=[ 54789], 95.00th=[ 71828], | 99.00th=[112722], 99.50th=[116917], 99.90th=[124257], 99.95th=[124257], | 99.99th=[124257] bw ( KiB/s): min= 127, max= 415, per=23.86%, avg=253.43, stdev=72.15, samples=44 iops : min= 7, max= 25, avg=15.16, stdev= 4.59, samples=44 write: IOPS=18, BW=290KiB/s (297kB/s)(6544KiB/22552msec); 0 zone resets clat (msec): min=2, max=125, avg=26.12, stdev=19.88 lat (msec): min=2, max=125, avg=26.15, stdev=19.86 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 17], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 54], 95.00th=[ 61], | 99.00th=[ 86], 99.50th=[ 87], 99.90th=[ 126], 99.95th=[ 126], | 99.99th=[ 126] bw ( KiB/s): min= 63, max= 479, per=25.61%, avg=286.07, stdev=97.28, samples=44 iops : min= 3, max= 29, avg=17.20, stdev= 6.12, samples=44 lat (usec) : 100=0.91%, 250=1.17%, 500=0.52% lat (msec) : 2=0.13%, 4=3.52%, 10=10.81%, 20=17.71%, 50=52.08% lat (msec) : 100=12.37%, 250=0.78% cpu : usr=0.12%, sys=17.15%, ctx=2441, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194673: Sat Aug 8 12:14:32 2026 read: IOPS=17, BW=284KiB/s (290kB/s)(6256KiB/22054msec) clat (usec): min=37, max=105282, avg=31509.34, stdev=17006.69 lat (usec): min=37, max=105283, avg=31514.04, stdev=17009.21 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 161], 10.00th=[ 14091], 20.00th=[ 20317], | 30.00th=[ 23725], 40.00th=[ 26084], 50.00th=[ 29754], 60.00th=[ 34341], | 70.00th=[ 38011], 80.00th=[ 43779], 90.00th=[ 52167], 95.00th=[ 57934], | 99.00th=[ 87557], 99.50th=[105382], 99.90th=[105382], 99.95th=[105382], | 99.99th=[105382] bw ( KiB/s): min= 96, max= 444, per=26.50%, avg=281.47, stdev=65.80, samples=43 iops : min= 6, max= 27, avg=16.93, stdev= 4.14, samples=43 write: IOPS=17, BW=274KiB/s (280kB/s)(6032KiB/22054msec); 0 zone resets clat (usec): min=1586, max=193490, avg=25598.20, stdev=20189.68 lat (usec): min=1588, max=193492, avg=25600.92, stdev=20189.48 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 13], 40.00th=[ 18], 50.00th=[ 23], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 41], 90.00th=[ 50], 95.00th=[ 61], | 99.00th=[ 88], 99.50th=[ 103], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 95, max= 448, per=23.89%, avg=266.86, stdev=83.58, samples=43 iops : min= 5, max= 28, avg=16.00, stdev= 5.33, samples=43 lat (usec) : 50=0.13%, 100=0.91%, 250=2.99%, 500=0.26% lat (msec) : 2=0.13%, 4=2.47%, 10=10.29%, 20=15.36%, 50=56.38% lat (msec) : 100=10.42%, 250=0.65% cpu : usr=0.13%, sys=17.54%, ctx=2475, 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=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=194674: Sat Aug 8 12:14:32 2026 read: IOPS=17, BW=282KiB/s (289kB/s)(6032KiB/21405msec) clat (usec): min=60, max=115476, avg=29932.51, stdev=19327.05 lat (usec): min=62, max=115478, avg=29933.84, stdev=19327.39 clat percentiles (usec): | 1.00th=[ 66], 5.00th=[ 121], 10.00th=[ 192], 20.00th=[ 15795], | 30.00th=[ 20579], 40.00th=[ 24249], 50.00th=[ 28443], 60.00th=[ 33162], | 70.00th=[ 37487], 80.00th=[ 42206], 90.00th=[ 50594], 95.00th=[ 62129], | 99.00th=[ 94897], 99.50th=[108528], 99.90th=[115868], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 126, max= 383, per=26.50%, avg=281.48, stdev=76.99, samples=42 iops : min= 7, max= 23, avg=16.90, stdev= 4.82, samples=42 write: IOPS=18, BW=292KiB/s (299kB/s)(6256KiB/21405msec); 0 zone resets clat (usec): min=1477, max=81686, avg=25394.30, stdev=19213.34 lat (usec): min=1480, max=81688, avg=25417.19, stdev=19213.97 clat percentiles (usec): | 1.00th=[ 2147], 5.00th=[ 3261], 10.00th=[ 4359], 20.00th=[ 6652], | 30.00th=[10552], 40.00th=[16057], 50.00th=[22152], 60.00th=[27657], | 70.00th=[33817], 80.00th=[41157], 90.00th=[53216], 95.00th=[65274], | 99.00th=[79168], 99.50th=[80217], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 95, max= 479, per=26.34%, avg=294.17, stdev=82.78, samples=42 iops : min= 5, max= 29, avg=17.69, stdev= 5.18, samples=42 lat (usec) : 100=1.30%, 250=3.91%, 500=0.39%, 1000=0.13% lat (msec) : 2=0.39%, 4=4.30%, 10=10.29%, 20=16.67%, 50=51.17% lat (msec) : 100=11.07%, 250=0.39% cpu : usr=0.16%, sys=17.25%, ctx=2354, 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=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=1062KiB/s (1088kB/s), 255KiB/s-284KiB/s (261kB/s-290kB/s), io=23.4MiB (24.5MB), run=21405-22552msec WRITE: bw=1117KiB/s (1144kB/s), 274KiB/s-292KiB/s (280kB/s-299kB/s), io=24.6MiB (25.8MB), run=21405-22552msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194666: Sat Aug 8 12:14:38 2026 read: IOPS=12, BW=204KiB/s (209kB/s)(5920KiB/29025msec) clat (msec): min=7, max=144, avg=29.69, stdev=19.99 lat (msec): min=7, max=144, avg=29.69, stdev=19.99 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 23], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 40], 90.00th=[ 58], 95.00th=[ 74], | 99.00th=[ 109], 99.50th=[ 122], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 31, max= 447, per=24.58%, avg=199.60, stdev=97.82, samples=57 iops : min= 1, max= 27, avg=11.84, stdev= 6.09, samples=57 write: IOPS=13, BW=219KiB/s (225kB/s)(6368KiB/29025msec); 0 zone resets clat (msec): min=11, max=198, avg=45.06, stdev=25.16 lat (msec): min=11, max=198, avg=45.06, stdev=25.15 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 66], 90.00th=[ 80], 95.00th=[ 92], | 99.00th=[ 125], 99.50th=[ 171], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 63, max= 448, per=25.50%, avg=217.75, stdev=79.96, samples=57 iops : min= 3, max= 28, avg=13.00, stdev= 5.00, samples=57 lat (msec) : 10=1.82%, 20=19.92%, 50=55.99%, 100=20.05%, 250=2.21% cpu : usr=0.10%, sys=7.01%, ctx=1631, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194667: Sat Aug 8 12:14:38 2026 read: IOPS=12, BW=196KiB/s (200kB/s)(5744KiB/29381msec) clat (msec): min=6, max=131, avg=32.63, stdev=22.53 lat (msec): min=6, max=131, avg=32.63, stdev=22.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 46], 90.00th=[ 66], 95.00th=[ 85], | 99.00th=[ 110], 99.50th=[ 121], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 31, max= 447, per=24.38%, avg=197.98, stdev=99.43, samples=57 iops : min= 1, max= 27, avg=11.74, stdev= 6.18, samples=57 write: IOPS=13, BW=223KiB/s (228kB/s)(6544KiB/29381msec); 0 zone resets clat (msec): min=13, max=197, avg=43.08, stdev=25.09 lat (msec): min=13, max=197, avg=43.08, stdev=25.09 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 62], 90.00th=[ 78], 95.00th=[ 87], | 99.00th=[ 123], 99.50th=[ 146], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 63, max= 540, per=25.85%, avg=220.74, stdev=103.87, samples=58 iops : min= 3, max= 33, avg=13.17, stdev= 6.46, samples=58 lat (msec) : 10=2.21%, 20=19.40%, 50=54.30%, 100=21.48%, 250=2.60% cpu : usr=0.10%, sys=6.68%, ctx=1591, 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=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=194668: Sat Aug 8 12:14:38 2026 read: IOPS=13, BW=215KiB/s (221kB/s)(6256KiB/29042msec) clat (msec): min=6, max=149, avg=31.23, stdev=21.52 lat (msec): min=6, max=149, avg=31.23, stdev=21.52 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 43], 90.00th=[ 63], 95.00th=[ 83], | 99.00th=[ 107], 99.50th=[ 134], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 63, max= 572, per=26.54%, avg=215.49, stdev=104.50, samples=57 iops : min= 3, max= 35, avg=12.86, stdev= 6.53, samples=57 write: IOPS=12, BW=208KiB/s (213kB/s)(6032KiB/29042msec); 0 zone resets clat (msec): min=12, max=186, avg=44.41, stdev=25.00 lat (msec): min=12, max=186, avg=44.41, stdev=25.00 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 62], 90.00th=[ 77], 95.00th=[ 92], | 99.00th=[ 142], 99.50th=[ 157], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 63, max= 448, per=23.92%, avg=204.32, stdev=82.40, samples=57 iops : min= 3, max= 28, avg=12.14, stdev= 5.14, samples=57 lat (msec) : 10=1.56%, 20=20.57%, 50=54.43%, 100=21.22%, 250=2.21% cpu : usr=0.09%, sys=6.90%, ctx=1559, 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=194669: Sat Aug 8 12:14:38 2026 read: IOPS=12, BW=205KiB/s (210kB/s)(6032KiB/29479msec) clat (msec): min=5, max=119, avg=33.14, stdev=21.95 lat (msec): min=5, max=119, avg=33.15, stdev=21.95 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 47], 90.00th=[ 66], 95.00th=[ 84], | 99.00th=[ 106], 99.50th=[ 108], 99.90th=[ 121], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 95, max= 480, per=24.87%, avg=201.97, stdev=98.67, samples=58 iops : min= 5, max= 30, avg=12.00, stdev= 6.08, samples=58 write: IOPS=13, BW=212KiB/s (217kB/s)(6256KiB/29479msec); 0 zone resets clat (msec): min=11, max=153, avg=43.14, stdev=25.11 lat (msec): min=11, max=153, avg=43.15, stdev=25.11 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 49], 80.00th=[ 63], 90.00th=[ 79], 95.00th=[ 93], | 99.00th=[ 136], 99.50th=[ 153], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 63, max= 415, per=24.53%, avg=209.52, stdev=88.16, samples=58 iops : min= 3, max= 25, avg=12.48, stdev= 5.48, samples=58 lat (msec) : 10=2.21%, 20=19.27%, 50=55.34%, 100=20.70%, 250=2.47% cpu : usr=0.11%, sys=6.86%, ctx=1625, 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=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=813KiB/s (832kB/s), 196KiB/s-215KiB/s (200kB/s-221kB/s), io=23.4MiB (24.5MB), run=29025-29479msec WRITE: bw=855KiB/s (875kB/s), 208KiB/s-223KiB/s (213kB/s-228kB/s), io=24.6MiB (25.8MB), run=29025-29479msec 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=194688: Sat Aug 8 12:14:47 2026 read: IOPS=3, BW=3246KiB/s (3324kB/s)(7168KiB/2208msec) clat (usec): min=542, max=224368, avg=141853.49, stdev=76368.78 lat (usec): min=543, max=224368, avg=141854.80, stdev=76368.63 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[111674], | 30.00th=[117965], 40.00th=[117965], 50.00th=[147850], 60.00th=[173016], | 70.00th=[173016], 80.00th=[217056], 90.00th=[223347], 95.00th=[223347], | 99.00th=[223347], 99.50th=[223347], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 1980, max= 5351, per=63.74%, avg=3803.33, stdev=1702.32, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=2, BW=2319KiB/s (2374kB/s)(5120KiB/2208msec); 0 zone resets clat (msec): min=113, max=487, avg=237.63, stdev=145.97 lat (msec): min=113, max=487, avg=237.69, stdev=145.95 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 205], 60.00th=[ 205], | 70.00th=[ 222], 80.00th=[ 222], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 2039, max= 5941, per=40.01%, avg=3342.67, stdev=2250.23, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=83.33%, 500=8.33% cpu : usr=0.00%, sys=46.94%, ctx=541, 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=194689: Sat Aug 8 12:14:47 2026 read: IOPS=0, BW=597KiB/s (611kB/s)(2048KiB/3432msec) clat (msec): min=58, max=152, avg=105.83, stdev=66.66 lat (msec): min=58, max=152, avg=105.83, stdev=66.66 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 59], | 30.00th=[ 59], 40.00th=[ 59], 50.00th=[ 59], 60.00th=[ 153], | 70.00th=[ 153], 80.00th=[ 153], 90.00th=[ 153], 95.00th=[ 153], | 99.00th=[ 153], 99.50th=[ 153], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 1828, max= 2039, per=32.40%, avg=1933.50, stdev=149.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2984KiB/s (3055kB/s)(10.0MiB/3432msec); 0 zone resets clat (msec): min=69, max=585, avg=311.55, stdev=182.79 lat (msec): min=69, max=586, avg=311.69, stdev=182.83 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 122], | 30.00th=[ 194], 40.00th=[ 218], 50.00th=[ 251], 60.00th=[ 279], | 70.00th=[ 326], 80.00th=[ 510], 90.00th=[ 567], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2039, max= 4071, per=33.90%, avg=2831.60, stdev=1081.91, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=25.00% cpu : usr=0.03%, sys=31.27%, ctx=224, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194690: Sat Aug 8 12:14:47 2026 read: IOPS=2, BW=2194KiB/s (2247kB/s)(6144KiB/2800msec) clat (usec): min=578, max=272084, avg=164028.31, stdev=99279.39 lat (usec): min=579, max=272085, avg=164029.67, stdev=99279.27 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[111674], | 30.00th=[111674], 40.00th=[164627], 50.00th=[164627], 60.00th=[183501], | 70.00th=[252707], 80.00th=[252707], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 2039, max= 4096, per=56.40%, avg=3365.33, stdev=1150.62, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2194KiB/s (2247kB/s)(6144KiB/2800msec); 0 zone resets clat (msec): min=125, max=615, avg=276.16, stdev=186.23 lat (msec): min=125, max=615, avg=276.26, stdev=186.23 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 288], | 70.00th=[ 330], 80.00th=[ 330], 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= 1980, max= 3657, per=29.10%, avg=2431.00, stdev=817.89, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=32.30%, ctx=236, 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=194691: Sat Aug 8 12:14:47 2026 read: IOPS=1, BW=1573KiB/s (1611kB/s)(5120KiB/3254msec) clat (usec): min=641, max=220926, avg=90312.38, stdev=102864.32 lat (usec): min=643, max=220927, avg=90313.68, stdev=102864.14 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 644], | 30.00th=[ 8586], 40.00th=[ 8586], 50.00th=[ 41157], 60.00th=[ 41157], | 70.00th=[181404], 80.00th=[181404], 90.00th=[221250], 95.00th=[221250], | 99.00th=[221250], 99.50th=[221250], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2203KiB/s (2256kB/s)(7168KiB/3254msec); 0 zone resets clat (msec): min=187, max=768, avg=376.51, stdev=202.64 lat (msec): min=187, max=769, avg=376.67, stdev=202.84 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 334], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 468], 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= 1980, max= 6107, per=34.03%, avg=2842.60, stdev=1825.06, samples=5 iops : min= 1, max= 5, avg= 2.00, stdev= 1.73, samples=5 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 50=8.33%, 250=41.67%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=31.42%, ctx=403, 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=5967KiB/s (6111kB/s), 597KiB/s-3246KiB/s (611kB/s-3324kB/s), io=20.0MiB (20.0MB), run=2208-3432msec WRITE: bw=8354KiB/s (8555kB/s), 2194KiB/s-2984KiB/s (2247kB/s-3055kB/s), io=28.0MiB (29.4MB), run=2208-3432msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194683: Sat Aug 8 12:14:48 2026 read: IOPS=2, BW=2377KiB/s (2435kB/s)(7168KiB/3015msec) clat (msec): min=68, max=537, avg=209.44, stdev=162.55 lat (msec): min=68, max=537, avg=209.44, stdev=162.55 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 94], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 155], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 292], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1793, max= 4087, per=45.04%, avg=2439.50, stdev=1101.61, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1698KiB/s (1739kB/s)(5120KiB/3015msec); 0 zone resets clat (msec): min=104, max=478, avg=267.84, stdev=168.10 lat (msec): min=104, max=478, avg=267.98, stdev=168.02 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 105], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 213], 60.00th=[ 213], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 1878, max= 4079, per=35.17%, avg=2666.67, stdev=1225.90, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=17.55%, ctx=155, 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=194685: Sat Aug 8 12:14:48 2026 read: IOPS=0, BW=542KiB/s (555kB/s)(2048KiB/3781msec) clat (msec): min=74, max=395, avg=234.93, stdev=226.69 lat (msec): min=74, max=395, avg=234.94, stdev=226.69 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 75], | 30.00th=[ 75], 40.00th=[ 75], 50.00th=[ 75], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 1787, max= 2039, per=35.32%, avg=1913.00, stdev=178.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2708KiB/s (2773kB/s)(10.0MiB/3781msec); 0 zone resets clat (msec): min=109, max=704, avg=325.89, stdev=193.05 lat (msec): min=109, max=704, avg=326.00, stdev=193.03 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 113], | 30.00th=[ 120], 40.00th=[ 284], 50.00th=[ 309], 60.00th=[ 321], | 70.00th=[ 368], 80.00th=[ 384], 90.00th=[ 550], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1787, max= 6131, per=41.46%, avg=3143.60, stdev=1847.99, samples=5 iops : min= 1, max= 5, avg= 2.20, stdev= 1.79, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 750=16.67% cpu : usr=0.05%, sys=15.61%, ctx=159, 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=194686: Sat Aug 8 12:14:48 2026 read: IOPS=2, BW=2420KiB/s (2478kB/s)(6144KiB/2539msec) clat (msec): min=91, max=236, avg=161.62, stdev=64.63 lat (msec): min=91, max=236, avg=161.62, stdev=64.63 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 96], | 30.00th=[ 96], 40.00th=[ 127], 50.00th=[ 127], 60.00th=[ 205], | 70.00th=[ 215], 80.00th=[ 215], 90.00th=[ 236], 95.00th=[ 236], | 99.00th=[ 236], 99.50th=[ 236], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 1878, max= 4000, per=48.75%, avg=2640.33, stdev=1180.39, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2420KiB/s (2478kB/s)(6144KiB/2539msec); 0 zone resets clat (msec): min=67, max=522, avg=258.85, stdev=163.39 lat (msec): min=67, max=522, avg=258.99, stdev=163.38 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 105], | 30.00th=[ 105], 40.00th=[ 259], 50.00th=[ 259], 60.00th=[ 296], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 1878, max= 3611, per=31.43%, avg=2383.00, stdev=821.64, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=25.00%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=13.12%, ctx=115, 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=194687: Sat Aug 8 12:14:48 2026 read: IOPS=1, BW=1723KiB/s (1764kB/s)(5120KiB/2972msec) clat (msec): min=65, max=283, avg=171.83, stdev=93.96 lat (msec): min=65, max=283, avg=171.83, stdev=93.96 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 66], | 30.00th=[ 90], 40.00th=[ 90], 50.00th=[ 180], 60.00th=[ 180], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 2043, max= 5636, per=70.89%, avg=3839.50, stdev=2540.63, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2412KiB/s (2470kB/s)(7168KiB/2972msec); 0 zone resets clat (msec): min=84, max=649, avg=292.13, stdev=205.90 lat (msec): min=84, max=649, avg=292.23, stdev=205.88 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 123], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 226], 60.00th=[ 251], | 70.00th=[ 251], 80.00th=[ 498], 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= 1802, max= 4000, per=32.59%, avg=2471.00, stdev=1025.54, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=25.00%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.03%, sys=14.61%, ctx=131, 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=5417KiB/s (5547kB/s), 542KiB/s-2420KiB/s (555kB/s-2478kB/s), io=20.0MiB (20.0MB), run=2539-3781msec WRITE: bw=7583KiB/s (7765kB/s), 1698KiB/s-2708KiB/s (1739kB/s-2773kB/s), io=28.0MiB (29.4MB), run=2539-3781msec 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=194701: Sat Aug 8 12:14:56 2026 read: IOPS=1, BW=5871KiB/s (6012kB/s)(12.0MiB/2093msec) clat (msec): min=431, max=888, avg=672.82, stdev=229.97 lat (msec): min=431, max=889, avg=672.82, stdev=229.97 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 885], 80.00th=[ 885], 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= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=10.13%, ctx=78, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194703: Sat Aug 8 12:14:56 2026 read: IOPS=0, BW=1675KiB/s (1715kB/s)(4096KiB/2446msec) clat (nsec): min=1308.5M, max=1308.5M, avg=1308507448.00, stdev= 0.00 lat (nsec): min=1308.5M, max=1308.5M, avg=1308510267.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1301], 5.00th=[ 1301], 10.00th=[ 1301], 20.00th=[ 1301], | 30.00th=[ 1301], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3349KiB/s (3430kB/s)(8192KiB/2446msec); 0 zone resets clat (msec): min=503, max=512, avg=507.74, stdev= 6.70 lat (msec): min=503, max=512, avg=507.97, stdev= 6.69 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 8192, max= 8192, per=61.15%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=10.67%, ctx=76, 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=194704: Sat Aug 8 12:14:56 2026 write: IOPS=1, BW=5144KiB/s (5267kB/s)(12.0MiB/2389msec); 0 zone resets clat (msec): min=149, max=1629, avg=767.88, stdev=769.14 lat (msec): min=149, max=1629, avg=769.06, stdev=768.92 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8192, max= 8192, per=61.15%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.84%, ctx=45, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194705: Sat Aug 8 12:14:56 2026 write: IOPS=1, BW=5644KiB/s (5780kB/s)(12.0MiB/2177msec); 0 zone resets clat (msec): min=140, max=1397, avg=708.97, stdev=637.13 lat (msec): min=141, max=1398, avg=709.55, stdev=637.03 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 6954, max= 8175, per=56.47%, avg=7564.50, stdev=863.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.64%, ctx=65, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6698KiB/s (6859kB/s), 1675KiB/s-5871KiB/s (1715kB/s-6012kB/s), io=16.0MiB (16.8MB), run=2093-2446msec WRITE: bw=13.1MiB/s (13.7MB/s), 3349KiB/s-5644KiB/s (3430kB/s-5780kB/s), io=32.0MiB (33.6MB), run=2177-2446msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194697: Sat Aug 8 12:14:57 2026 read: IOPS=1, BW=7534KiB/s (7715kB/s)(12.0MiB/1631msec) clat (msec): min=432, max=570, avg=515.05, stdev=72.85 lat (msec): min=432, max=570, avg=515.05, stdev=72.85 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 8110, max= 8175, per=100.00%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=30.67%, ctx=761, 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=194698: Sat Aug 8 12:14:57 2026 read: IOPS=0, BW=1909KiB/s (1954kB/s)(4096KiB/2146msec) clat (nsec): min=578436k, max=578436k, avg=578436115.00, stdev= 0.00 lat (nsec): min=578441k, max=578441k, avg=578441384.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3817KiB/s (3909kB/s)(8192KiB/2146msec); 0 zone resets clat (msec): min=625, max=884, avg=755.15, stdev=183.60 lat (msec): min=625, max=885, avg=755.52, stdev=183.62 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 885], 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= 8110, max= 8110, per=64.85%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.05%, sys=15.24%, ctx=173, 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=194699: Sat Aug 8 12:14:57 2026 write: IOPS=1, BW=4690KiB/s (4803kB/s)(12.0MiB/2620msec); 0 zone resets clat (msec): min=80, max=1971, avg=858.75, stdev=989.23 lat (msec): min=80, max=1972, avg=859.15, stdev=989.43 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 81], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 1972], 80.00th=[ 1972], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 8175, max= 8192, per=65.44%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 100=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.10%, ctx=37, 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=194702: Sat Aug 8 12:14:57 2026 write: IOPS=1, BW=5274KiB/s (5400kB/s)(12.0MiB/2330msec); 0 zone resets clat (msec): min=474, max=1060, avg=749.92, stdev=294.43 lat (msec): min=474, max=1060, avg=750.46, stdev=294.55 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8175, max= 8175, per=65.37%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=13.18%, ctx=93, 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=7635KiB/s (7818kB/s), 1909KiB/s-7534KiB/s (1954kB/s-7715kB/s), io=16.0MiB (16.8MB), run=1631-2146msec WRITE: bw=12.2MiB/s (12.8MB/s), 3817KiB/s-5274KiB/s (3909kB/s-5400kB/s), io=32.0MiB (33.6MB), run=2146-2620msec