== sanity test 398b: DIO and buffer IO race ============== 12:14:14 (1787501654) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.41905 s, 7.8 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=179538: Sun Aug 23 12:16:33 2026 read: IOPS=13, BW=52.6KiB/s (53.9kB/s)(5992KiB/113931msec) clat (usec): min=48, max=974642, avg=42753.54, stdev=36173.09 lat (usec): min=48, max=974644, avg=42755.97, stdev=36172.74 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 11731], 10.00th=[ 16188], 20.00th=[ 21890], | 30.00th=[ 26084], 40.00th=[ 30540], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[135267], 99.50th=[152044], 99.90th=[206570], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 7, max= 127, per=25.88%, avg=52.54, stdev=20.48, samples=223 iops : min= 1, max= 31, avg=12.50, stdev= 5.17, samples=223 write: IOPS=13, BW=55.3KiB/s (56.6kB/s)(6296KiB/113931msec); 0 zone resets clat (usec): min=928, max=227284, avg=31486.00, stdev=32543.43 lat (usec): min=930, max=227286, avg=31489.09, stdev=32545.99 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1352], 10.00th=[ 2057], 20.00th=[ 3884], | 30.00th=[ 7177], 40.00th=[ 14484], 50.00th=[ 22938], 60.00th=[ 30540], | 70.00th=[ 39584], 80.00th=[ 53740], 90.00th=[ 74974], 95.00th=[ 96994], | 99.00th=[143655], 99.50th=[160433], 99.90th=[225444], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 143, per=26.03%, avg=55.19, stdev=23.63, samples=223 iops : min= 1, max= 35, avg=13.17, stdev= 5.96, samples=223 lat (usec) : 50=0.03%, 100=1.50%, 250=0.16%, 500=0.03%, 1000=0.03% lat (msec) : 2=4.75%, 4=5.83%, 10=7.55%, 20=11.95%, 50=42.02% lat (msec) : 100=22.14%, 250=3.97%, 1000=0.03% cpu : usr=0.10%, sys=5.28%, ctx=6809, 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=179539: Sun Aug 23 12:16:33 2026 read: IOPS=12, BW=50.7KiB/s (51.9kB/s)(5940KiB/117245msec) clat (usec): min=48, max=977487, avg=42742.29, stdev=36697.66 lat (usec): min=49, max=977490, avg=42747.96, stdev=36697.97 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 10421], 10.00th=[ 16057], 20.00th=[ 21627], | 30.00th=[ 26346], 40.00th=[ 30540], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 60031], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[145753], 99.50th=[170918], 99.90th=[283116], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 7, max= 103, per=24.91%, avg=50.57, stdev=19.17, samples=230 iops : min= 1, max= 25, avg=12.00, stdev= 4.84, samples=230 write: IOPS=13, BW=54.1KiB/s (55.4kB/s)(6348KiB/117245msec); 0 zone resets clat (usec): min=1060, max=197533, avg=33643.97, stdev=33002.50 lat (usec): min=1061, max=197535, avg=33646.39, stdev=33002.05 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1369], 10.00th=[ 1909], 20.00th=[ 3720], | 30.00th=[ 7046], 40.00th=[ 17171], 50.00th=[ 25560], 60.00th=[ 33424], | 70.00th=[ 44827], 80.00th=[ 58983], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[139461], 99.50th=[156238], 99.90th=[196084], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 7, max= 135, per=25.46%, avg=53.97, stdev=23.65, samples=230 iops : min= 1, max= 33, avg=12.87, stdev= 5.96, samples=230 lat (usec) : 50=0.07%, 100=1.50%, 250=0.33% lat (msec) : 2=5.66%, 4=5.05%, 10=7.36%, 20=9.99%, 50=41.73% lat (msec) : 100=24.22%, 250=4.04%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.27%, ctx=6874, 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=179540: Sun Aug 23 12:16:33 2026 read: IOPS=13, BW=52.4KiB/s (53.7kB/s)(6028KiB/114955msec) clat (usec): min=38, max=944987, avg=41935.39, stdev=34798.65 lat (usec): min=39, max=944989, avg=41944.73, stdev=34798.46 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 9372], 10.00th=[ 16712], 20.00th=[ 21890], | 30.00th=[ 26346], 40.00th=[ 30540], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[127402], 99.50th=[149947], 99.90th=[198181], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 7, max= 111, per=25.89%, avg=52.56, stdev=19.66, samples=225 iops : min= 1, max= 27, avg=12.50, stdev= 4.97, samples=225 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6260KiB/114955msec); 0 zone resets clat (usec): min=994, max=340092, avg=32827.69, stdev=34261.65 lat (usec): min=996, max=340094, avg=32835.68, stdev=34257.12 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1336], 10.00th=[ 1942], 20.00th=[ 3621], | 30.00th=[ 6587], 40.00th=[ 14222], 50.00th=[ 23200], 60.00th=[ 31065], | 70.00th=[ 42730], 80.00th=[ 56886], 90.00th=[ 81265], 95.00th=[100140], | 99.00th=[139461], 99.50th=[162530], 99.90th=[214959], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 119, per=25.58%, avg=54.22, stdev=22.03, samples=226 iops : min= 1, max= 29, avg=12.92, stdev= 5.53, samples=226 lat (usec) : 50=0.10%, 100=1.69%, 250=0.26%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.37%, 4=5.57%, 10=7.58%, 20=10.77%, 50=41.60% lat (msec) : 100=22.66%, 250=4.17%, 500=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.15%, ctx=6704, 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=179541: Sun Aug 23 12:16:33 2026 read: IOPS=12, BW=51.2KiB/s (52.4kB/s)(6052KiB/118172msec) clat (usec): min=46, max=352117, avg=43290.85, stdev=30369.16 lat (usec): min=47, max=352118, avg=43295.85, stdev=30367.48 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 11076], 10.00th=[ 16319], 20.00th=[ 21890], | 30.00th=[ 26084], 40.00th=[ 31065], 50.00th=[ 37487], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 60556], 90.00th=[ 74974], 95.00th=[ 94897], | 99.00th=[145753], 99.50th=[196084], 99.90th=[270533], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 7, max= 110, per=25.21%, avg=51.18, stdev=18.93, samples=232 iops : min= 1, max= 27, avg=12.15, stdev= 4.75, samples=232 write: IOPS=13, BW=52.8KiB/s (54.0kB/s)(6236KiB/118172msec); 0 zone resets clat (usec): min=1028, max=954327, avg=33580.27, stdev=40650.08 lat (usec): min=1030, max=954329, avg=33582.99, stdev=40650.50 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1336], 10.00th=[ 2008], 20.00th=[ 3851], | 30.00th=[ 7111], 40.00th=[ 14484], 50.00th=[ 23462], 60.00th=[ 32375], | 70.00th=[ 43779], 80.00th=[ 59507], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[132645], 99.50th=[158335], 99.90th=[223347], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 133, per=24.72%, avg=52.42, stdev=22.74, samples=233 iops : min= 1, max= 33, avg=12.47, stdev= 5.74, samples=233 lat (usec) : 50=0.03%, 100=1.33%, 250=0.20%, 750=0.07%, 1000=0.03% lat (msec) : 2=5.08%, 4=5.53%, 10=7.88%, 20=11.04%, 50=40.76% lat (msec) : 100=23.50%, 250=4.39%, 500=0.13%, 1000=0.03% cpu : usr=0.09%, sys=5.24%, ctx=6766, 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=203KiB/s (208kB/s), 50.7KiB/s-52.6KiB/s (51.9kB/s-53.9kB/s), io=23.4MiB (24.6MB), run=113931-118172msec WRITE: bw=213KiB/s (218kB/s), 52.8KiB/s-55.3KiB/s (54.0kB/s-56.6kB/s), io=24.6MiB (25.7MB), run=113931-118172msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179533: Sun Aug 23 12:17:10 2026 read: IOPS=9, BW=38.4KiB/s (39.3kB/s)(5992KiB/156237msec) clat (msec): min=5, max=969, avg=41.15, stdev=43.94 lat (msec): min=5, max=969, avg=41.15, stdev=43.94 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 58], 90.00th=[ 87], 95.00th=[ 124], | 99.00th=[ 194], 99.50th=[ 209], 99.90th=[ 257], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 143, per=25.30%, avg=38.70, stdev=27.01, samples=302 iops : min= 1, max= 35, avg= 9.00, stdev= 6.77, samples=302 write: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6296KiB/156237msec); 0 zone resets clat (msec): min=11, max=358, avg=59.85, stdev=42.16 lat (msec): min=11, max=358, avg=59.85, stdev=42.16 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 69], 80.00th=[ 89], 90.00th=[ 115], 95.00th=[ 142], | 99.00th=[ 201], 99.50th=[ 249], 99.90th=[ 305], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 135, per=25.14%, avg=40.22, stdev=24.90, samples=305 iops : min= 1, max= 33, avg= 9.38, stdev= 6.26, samples=305 lat (msec) : 10=2.12%, 20=16.11%, 50=46.45%, 100=23.63%, 250=11.33% lat (msec) : 500=0.33%, 1000=0.03% cpu : usr=0.05%, sys=1.94%, ctx=4904, 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=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=179534: Sun Aug 23 12:17:10 2026 read: IOPS=9, BW=38.1KiB/s (39.0kB/s)(5940KiB/155860msec) clat (msec): min=5, max=1002, avg=40.97, stdev=44.20 lat (msec): min=5, max=1002, avg=40.97, stdev=44.20 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 85], 95.00th=[ 115], | 99.00th=[ 197], 99.50th=[ 226], 99.90th=[ 257], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 151, per=25.19%, avg=38.53, stdev=26.70, samples=300 iops : min= 1, max= 37, avg= 8.96, stdev= 6.70, samples=300 write: IOPS=10, BW=40.7KiB/s (41.7kB/s)(6348KiB/155860msec); 0 zone resets clat (msec): min=9, max=397, avg=59.62, stdev=41.28 lat (msec): min=9, max=397, avg=59.63, stdev=41.28 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 69], 80.00th=[ 87], 90.00th=[ 117], 95.00th=[ 144], | 99.00th=[ 194], 99.50th=[ 215], 99.90th=[ 292], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 127, per=25.39%, avg=40.62, stdev=24.15, samples=304 iops : min= 1, max= 31, avg= 9.47, stdev= 6.05, samples=304 lat (msec) : 10=3.12%, 20=15.10%, 50=46.03%, 100=24.54%, 250=11.04% lat (msec) : 500=0.13%, 2000=0.03% cpu : usr=0.07%, sys=1.84%, ctx=4777, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179535: Sun Aug 23 12:17:10 2026 read: IOPS=9, BW=38.8KiB/s (39.8kB/s)(6028KiB/155272msec) clat (msec): min=5, max=287, avg=40.19, stdev=34.99 lat (msec): min=5, max=287, avg=40.19, stdev=34.99 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 88], 95.00th=[ 112], | 99.00th=[ 174], 99.50th=[ 201], 99.90th=[ 257], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 158, per=25.95%, avg=39.71, stdev=26.60, samples=296 iops : min= 1, max= 39, avg= 9.25, stdev= 6.67, samples=296 write: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6260KiB/155272msec); 0 zone resets clat (msec): min=10, max=1033, avg=60.26, stdev=50.30 lat (msec): min=10, max=1033, avg=60.26, stdev=50.30 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 88], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 215], 99.50th=[ 279], 99.90th=[ 393], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 119, per=25.07%, avg=40.11, stdev=24.90, samples=304 iops : min= 1, max= 29, avg= 9.35, stdev= 6.24, samples=304 lat (msec) : 10=2.47%, 20=16.18%, 50=46.35%, 100=24.09%, 250=10.48% lat (msec) : 500=0.39%, 2000=0.03% cpu : usr=0.07%, sys=1.84%, ctx=4845, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179536: Sun Aug 23 12:17:10 2026 read: IOPS=9, BW=38.0KiB/s (39.9kB/s)(6052KiB/155337msec) clat (msec): min=5, max=268, avg=41.27, stdev=36.80 lat (msec): min=5, max=268, avg=41.28, stdev=36.80 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 93], 95.00th=[ 120], | 99.00th=[ 180], 99.50th=[ 209], 99.90th=[ 245], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 7, max= 159, per=25.43%, avg=38.90, stdev=27.30, samples=303 iops : min= 1, max= 39, avg= 9.05, stdev= 6.84, samples=303 write: IOPS=10, BW=40.1KiB/s (41.1kB/s)(6236KiB/155337msec); 0 zone resets clat (msec): min=10, max=1027, avg=59.31, stdev=47.28 lat (msec): min=10, max=1027, avg=59.31, stdev=47.28 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 86], 90.00th=[ 112], 95.00th=[ 142], | 99.00th=[ 199], 99.50th=[ 234], 99.90th=[ 330], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 127, per=25.04%, avg=40.06, stdev=24.61, samples=303 iops : min= 1, max= 31, avg= 9.33, stdev= 6.17, samples=303 lat (msec) : 10=2.34%, 20=16.99%, 50=44.99%, 100=24.48%, 250=10.97% lat (msec) : 500=0.20%, 2000=0.03% cpu : usr=0.07%, sys=1.86%, ctx=4920, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=154KiB/s (157kB/s), 38.1KiB/s-38.0KiB/s (39.0kB/s-39.9kB/s), io=23.4MiB (24.6MB), run=155272-156237msec WRITE: bw=161KiB/s (165kB/s), 40.1KiB/s-40.7KiB/s (41.1kB/s-41.7kB/s), io=24.6MiB (25.7MB), run=155272-156237msec 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=179584: Sun Aug 23 12:17:49 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(5920KiB/29784msec) clat (usec): min=39, max=184022, avg=42844.38, stdev=27829.50 lat (usec): min=39, max=184022, avg=42845.83, stdev=27829.50 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 111], 10.00th=[ 15533], 20.00th=[ 21365], | 30.00th=[ 26608], 40.00th=[ 32900], 50.00th=[ 38011], 60.00th=[ 43779], | 70.00th=[ 51643], 80.00th=[ 62653], 90.00th=[ 77071], 95.00th=[ 89654], | 99.00th=[139461], 99.50th=[168821], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 95, max= 480, per=24.60%, avg=197.78, stdev=72.42, samples=59 iops : min= 5, max= 30, avg=11.51, stdev= 4.59, samples=59 write: IOPS=13, BW=214KiB/s (219kB/s)(6368KiB/29784msec); 0 zone resets clat (usec): min=1654, max=249379, avg=34508.72, stdev=31718.18 lat (usec): min=1655, max=249382, avg=34514.75, stdev=31722.19 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2606], 10.00th=[ 4178], 20.00th=[ 6915], | 30.00th=[ 11207], 40.00th=[ 20317], 50.00th=[ 26346], 60.00th=[ 33817], | 70.00th=[ 45351], 80.00th=[ 58459], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[124257], 99.50th=[204473], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 475, per=25.23%, avg=213.42, stdev=88.37, samples=59 iops : min= 1, max= 29, avg=12.49, stdev= 5.61, samples=59 lat (usec) : 50=0.52%, 100=1.69%, 250=0.52%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=1.43%, 4=3.26%, 10=9.51%, 20=11.59%, 50=41.41% lat (msec) : 100=25.65%, 250=3.78% cpu : usr=0.07%, sys=6.64%, ctx=1953, 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=179586: Sun Aug 23 12:17:49 2026 read: IOPS=12, BW=200KiB/s (205kB/s)(5744KiB/28670msec) clat (usec): min=53, max=141317, avg=41980.04, stdev=24211.05 lat (usec): min=54, max=141319, avg=41981.35, stdev=24211.06 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 111], 10.00th=[ 15926], 20.00th=[ 23725], | 30.00th=[ 27919], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 45351], | 70.00th=[ 51119], 80.00th=[ 58459], 90.00th=[ 71828], 95.00th=[ 85459], | 99.00th=[125305], 99.50th=[137364], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 62, max= 412, per=24.78%, avg=199.25, stdev=64.90, samples=56 iops : min= 3, max= 25, avg=11.59, stdev= 4.10, samples=56 write: IOPS=14, BW=228KiB/s (234kB/s)(6544KiB/28670msec); 0 zone resets clat (usec): min=1848, max=163160, avg=32671.68, stdev=29080.23 lat (usec): min=1850, max=163163, avg=32678.09, stdev=29079.80 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 11], 40.00th=[ 17], 50.00th=[ 25], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 74], 95.00th=[ 88], | 99.00th=[ 124], 99.50th=[ 140], 99.90th=[ 163], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 63, max= 443, per=26.78%, avg=226.54, stdev=78.66, samples=56 iops : min= 3, max= 27, avg=13.30, stdev= 4.95, samples=56 lat (usec) : 100=1.95%, 250=1.04% lat (msec) : 2=0.39%, 4=4.30%, 10=10.29%, 20=12.50%, 50=41.67% lat (msec) : 100=25.39%, 250=2.47% cpu : usr=0.10%, sys=6.82%, ctx=1909, 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=179588: Sun Aug 23 12:17:49 2026 read: IOPS=13, BW=217KiB/s (222kB/s)(6256KiB/28869msec) clat (usec): min=39, max=186298, avg=39558.10, stdev=24759.35 lat (usec): min=40, max=186299, avg=39561.67, stdev=24759.32 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 83], 10.00th=[ 13566], 20.00th=[ 21890], | 30.00th=[ 26084], 40.00th=[ 31065], 50.00th=[ 36439], 60.00th=[ 41681], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 67634], 95.00th=[ 79168], | 99.00th=[137364], 99.50th=[156238], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 62, max= 351, per=26.92%, avg=216.42, stdev=68.19, samples=57 iops : min= 3, max= 21, avg=12.67, stdev= 4.30, samples=57 write: IOPS=13, BW=209KiB/s (214kB/s)(6032KiB/28869msec); 0 zone resets clat (usec): min=1761, max=221285, avg=34967.77, stdev=31783.50 lat (usec): min=1763, max=221287, avg=35004.20, stdev=31758.65 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2802], 10.00th=[ 3720], 20.00th=[ 6521], | 30.00th=[ 12518], 40.00th=[ 20055], 50.00th=[ 27919], 60.00th=[ 36439], | 70.00th=[ 45351], 80.00th=[ 56886], 90.00th=[ 76022], 95.00th=[ 96994], | 99.00th=[147850], 99.50th=[196084], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 30, max= 351, per=24.33%, avg=205.82, stdev=79.02, samples=57 iops : min= 1, max= 21, avg=12.00, stdev= 4.96, samples=57 lat (usec) : 50=0.39%, 100=2.60%, 250=1.04%, 500=0.13%, 1000=0.26% lat (msec) : 2=1.17%, 4=4.43%, 10=6.77%, 20=10.55%, 50=46.09% lat (msec) : 100=23.83%, 250=2.73% cpu : usr=0.08%, sys=6.80%, ctx=1943, 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=179589: Sun Aug 23 12:17:49 2026 read: IOPS=13, BW=210KiB/s (215kB/s)(6032KiB/28691msec) clat (usec): min=45, max=156410, avg=40897.53, stdev=26025.97 lat (usec): min=46, max=156411, avg=40903.71, stdev=26023.55 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 75], 10.00th=[ 2089], 20.00th=[ 23200], | 30.00th=[ 28181], 40.00th=[ 32900], 50.00th=[ 36963], 60.00th=[ 42206], | 70.00th=[ 47973], 80.00th=[ 58983], 90.00th=[ 71828], 95.00th=[ 93848], | 99.00th=[127402], 99.50th=[141558], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 30, max= 318, per=26.00%, avg=209.00, stdev=59.50, samples=56 iops : min= 1, max= 19, avg=12.20, stdev= 3.74, samples=56 write: IOPS=13, BW=218KiB/s (223kB/s)(6256KiB/28691msec); 0 zone resets clat (usec): min=1736, max=163659, avg=33720.71, stdev=31034.04 lat (usec): min=1737, max=163662, avg=33723.55, stdev=31033.92 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2311], 10.00th=[ 4015], 20.00th=[ 6390], | 30.00th=[ 10290], 40.00th=[ 18220], 50.00th=[ 26608], 60.00th=[ 32900], | 70.00th=[ 42730], 80.00th=[ 57410], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[141558], 99.50th=[160433], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 94, max= 412, per=25.83%, avg=218.48, stdev=80.22, samples=56 iops : min= 5, max= 25, avg=12.80, stdev= 5.09, samples=56 lat (usec) : 50=0.13%, 100=3.26%, 250=0.78%, 500=0.26% lat (msec) : 2=2.34%, 4=3.26%, 10=10.16%, 20=8.98%, 50=44.66% lat (msec) : 100=22.66%, 250=3.52% cpu : usr=0.07%, sys=6.67%, ctx=1901, 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=804KiB/s (823kB/s), 199KiB/s-217KiB/s (204kB/s-222kB/s), io=23.4MiB (24.5MB), run=28670-29784msec WRITE: bw=846KiB/s (866kB/s), 209KiB/s-228KiB/s (214kB/s-234kB/s), io=24.6MiB (25.8MB), run=28670-29784msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179582: Sun Aug 23 12:17:59 2026 read: IOPS=9, BW=154KiB/s (158kB/s)(5920KiB/38459msec) clat (msec): min=7, max=222, avg=41.06, stdev=34.51 lat (msec): min=7, max=222, avg=41.06, stdev=34.51 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 85], 95.00th=[ 115], | 99.00th=[ 182], 99.50th=[ 218], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 446, per=25.02%, avg=152.87, stdev=92.59, samples=76 iops : min= 1, max= 27, avg= 8.76, stdev= 5.83, samples=76 write: IOPS=10, BW=166KiB/s (170kB/s)(6368KiB/38459msec); 0 zone resets clat (msec): min=15, max=326, avg=57.80, stdev=36.88 lat (msec): min=15, max=326, avg=57.81, stdev=36.88 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 69], 80.00th=[ 81], 90.00th=[ 107], 95.00th=[ 129], | 99.00th=[ 186], 99.50th=[ 224], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 415, per=26.01%, avg=167.24, stdev=89.63, samples=75 iops : min= 1, max= 25, avg= 9.67, stdev= 5.63, samples=75 lat (msec) : 10=1.04%, 20=13.80%, 50=48.96%, 100=26.56%, 250=9.51% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.24%, ctx=1163, 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=179583: Sun Aug 23 12:17:59 2026 read: IOPS=9, BW=147KiB/s (151kB/s)(5744KiB/38943msec) clat (msec): min=6, max=271, avg=39.82, stdev=34.66 lat (msec): min=6, max=271, avg=39.83, stdev=34.66 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 54], 90.00th=[ 94], 95.00th=[ 120], | 99.00th=[ 165], 99.50th=[ 197], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 479, per=25.00%, avg=152.77, stdev=97.09, samples=74 iops : min= 1, max= 29, avg= 8.76, stdev= 6.09, samples=74 write: IOPS=10, BW=168KiB/s (172kB/s)(6544KiB/38943msec); 0 zone resets clat (msec): min=14, max=215, avg=59.67, stdev=37.99 lat (msec): min=14, max=215, avg=59.69, stdev=38.01 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 71], 80.00th=[ 83], 90.00th=[ 109], 95.00th=[ 138], | 99.00th=[ 205], 99.50th=[ 211], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 31, max= 446, per=26.10%, avg=167.81, stdev=93.43, samples=77 iops : min= 1, max= 27, avg= 9.70, stdev= 5.85, samples=77 lat (msec) : 10=1.82%, 20=13.93%, 50=49.87%, 100=24.35%, 250=9.90% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.14%, ctx=1196, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179585: Sun Aug 23 12:17:59 2026 read: IOPS=10, BW=161KiB/s (164kB/s)(6256KiB/38968msec) clat (msec): min=6, max=268, avg=41.30, stdev=37.71 lat (msec): min=6, max=268, avg=41.30, stdev=37.71 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 66], 90.00th=[ 95], 95.00th=[ 115], | 99.00th=[ 192], 99.50th=[ 211], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 637, per=27.38%, avg=167.30, stdev=116.28, samples=74 iops : min= 1, max= 39, avg= 9.68, stdev= 7.28, samples=74 write: IOPS=9, BW=155KiB/s (159kB/s)(6032KiB/38968msec); 0 zone resets clat (msec): min=12, max=228, avg=60.05, stdev=37.88 lat (msec): min=12, max=228, avg=60.05, stdev=37.88 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 39], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 90], 90.00th=[ 113], 95.00th=[ 138], | 99.00th=[ 194], 99.50th=[ 209], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 31, max= 447, per=24.23%, avg=155.79, stdev=87.96, samples=76 iops : min= 1, max= 27, avg= 8.95, stdev= 5.54, samples=76 lat (msec) : 10=1.69%, 20=16.67%, 50=45.70%, 100=24.61%, 250=11.20% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.08%, ctx=1177, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179587: Sun Aug 23 12:17:59 2026 read: IOPS=9, BW=154KiB/s (158kB/s)(6032KiB/39159msec) clat (msec): min=6, max=220, avg=42.03, stdev=35.75 lat (msec): min=6, max=220, avg=42.03, stdev=35.75 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 62], 90.00th=[ 94], 95.00th=[ 120], | 99.00th=[ 171], 99.50th=[ 174], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 440, per=24.88%, avg=152.04, stdev=94.63, samples=77 iops : min= 1, max= 27, avg= 8.71, stdev= 5.97, samples=77 write: IOPS=9, BW=160KiB/s (164kB/s)(6256KiB/39159msec); 0 zone resets clat (msec): min=13, max=327, avg=59.45, stdev=40.05 lat (msec): min=13, max=327, avg=59.45, stdev=40.05 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 55], | 70.00th=[ 73], 80.00th=[ 87], 90.00th=[ 111], 95.00th=[ 140], | 99.00th=[ 194], 99.50th=[ 222], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 509, per=24.68%, avg=158.69, stdev=98.59, samples=77 iops : min= 1, max= 31, avg= 9.13, stdev= 6.17, samples=77 lat (msec) : 10=1.56%, 20=14.45%, 50=49.22%, 100=23.05%, 250=11.59% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.17%, ctx=1247, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=612KiB/s (626kB/s), 147KiB/s-161KiB/s (151kB/s-164kB/s), io=23.4MiB (24.5MB), run=38459-39159msec WRITE: bw=644KiB/s (659kB/s), 155KiB/s-168KiB/s (159kB/s-172kB/s), io=24.6MiB (25.8MB), run=38459-39159msec 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=179605: Sun Aug 23 12:18:12 2026 read: IOPS=2, BW=2103KiB/s (2153kB/s)(7168KiB/3409msec) clat (usec): min=681, max=546914, avg=216846.87, stdev=177136.90 lat (usec): min=683, max=546916, avg=216848.45, stdev=177136.99 clat percentiles (usec): | 1.00th=[ 685], 5.00th=[ 685], 10.00th=[ 685], 20.00th=[ 58983], | 30.00th=[191890], 40.00th=[191890], 50.00th=[193987], 60.00th=[229639], | 70.00th=[229639], 80.00th=[295699], 90.00th=[549454], 95.00th=[549454], | 99.00th=[549454], 99.50th=[549454], 99.90th=[549454], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 1818, max= 3543, per=63.61%, avg=2689.50, stdev=888.56, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1502KiB/s (1538kB/s)(5120KiB/3409msec); 0 zone resets clat (msec): min=195, max=515, avg=375.76, stdev=138.19 lat (msec): min=202, max=516, avg=377.45, stdev=136.11 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 493], 80.00th=[ 493], 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= 2007, max= 4071, per=45.68%, avg=2704.33, stdev=1183.65, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67% cpu : usr=0.15%, sys=17.37%, ctx=179, 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=179606: Sun Aug 23 12:18:12 2026 read: IOPS=0, BW=423KiB/s (433kB/s)(2048KiB/4843msec) clat (msec): min=205, max=272, avg=238.98, stdev=47.94 lat (msec): min=205, max=272, avg=238.98, stdev=47.94 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 1818, max= 1848, per=43.35%, avg=1833.00, stdev=21.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2114KiB/s (2165kB/s)(10.0MiB/4843msec); 0 zone resets clat (msec): min=106, max=766, avg=436.03, stdev=218.43 lat (msec): min=106, max=767, avg=436.34, stdev=218.63 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 140], | 30.00th=[ 313], 40.00th=[ 317], 50.00th=[ 439], 60.00th=[ 451], | 70.00th=[ 584], 80.00th=[ 609], 90.00th=[ 634], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1771, max= 4071, per=37.55%, avg=2222.88, stdev=754.14, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 250=25.00%, 500=41.67%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=16.67%, ctx=173, 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=179607: Sun Aug 23 12:18:12 2026 read: IOPS=1, BW=1675KiB/s (1715kB/s)(6144KiB/3669msec) clat (msec): min=3, max=357, avg=194.75, stdev=139.32 lat (msec): min=3, max=357, avg=194.75, stdev=139.32 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 96], | 30.00th=[ 96], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 243], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 1818, max= 4071, per=78.08%, avg=3301.33, stdev=1284.91, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1675KiB/s (1715kB/s)(6144KiB/3669msec); 0 zone resets clat (msec): min=161, max=809, avg=416.29, stdev=225.41 lat (msec): min=161, max=809, avg=416.39, stdev=225.41 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 430], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1771, max= 4071, per=50.97%, avg=3017.33, stdev=1162.04, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 4=8.33%, 100=8.33%, 250=33.33%, 500=41.67%, 1000=8.33% cpu : usr=0.00%, sys=16.14%, 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=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=179608: Sun Aug 23 12:18:12 2026 read: IOPS=1, BW=1383KiB/s (1416kB/s)(5120KiB/3702msec) clat (msec): min=2, max=461, avg=228.45, stdev=211.64 lat (msec): min=2, max=461, avg=228.45, stdev=211.64 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 5], 40.00th=[ 5], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 1818, max= 4071, per=62.25%, avg=2632.00, stdev=1249.79, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1936KiB/s (1983kB/s)(7168KiB/3702msec); 0 zone resets clat (msec): min=84, max=574, avg=365.36, stdev=183.57 lat (msec): min=84, max=574, avg=365.47, stdev=183.57 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 194], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 401], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 567], 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= 1575, max= 3543, per=37.88%, avg=2242.75, stdev=886.96, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 4=8.33%, 10=8.33%, 100=8.33%, 250=8.33%, 500=50.00% lat (msec) : 750=16.67% cpu : usr=0.00%, sys=12.38%, ctx=115, 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=4229KiB/s (4330kB/s), 423KiB/s-2103KiB/s (433kB/s-2153kB/s), io=20.0MiB (20.0MB), run=3409-4843msec WRITE: bw=5920KiB/s (6062kB/s), 1502KiB/s-2114KiB/s (1538kB/s-2165kB/s), io=28.0MiB (29.4MB), run=3409-4843msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179600: Sun Aug 23 12:18:13 2026 read: IOPS=1, BW=1384KiB/s (1417kB/s)(7168KiB/5179msec) clat (msec): min=76, max=794, avg=354.58, stdev=284.71 lat (msec): min=76, max=794, avg=354.58, stdev=284.71 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 130], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 222], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 709], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1932, max= 4202, per=70.39%, avg=2546.00, stdev=1104.90, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=0, BW=989KiB/s (1012kB/s)(5120KiB/5179msec); 0 zone resets clat (msec): min=342, max=676, avg=506.38, stdev=158.50 lat (msec): min=342, max=677, avg=506.63, stdev=158.70 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1921, max= 4031, per=52.56%, avg=2661.00, stdev=1187.73, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=4.42%, ctx=98, 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=179601: Sun Aug 23 12:18:13 2026 read: IOPS=0, BW=362KiB/s (370kB/s)(2048KiB/5662msec) clat (msec): min=118, max=213, avg=166.12, stdev=66.86 lat (msec): min=118, max=213, avg=166.12, stdev=66.86 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 120], | 30.00th=[ 120], 40.00th=[ 120], 50.00th=[ 120], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 213], 90.00th=[ 213], 95.00th=[ 213], | 99.00th=[ 213], 99.50th=[ 213], 99.90th=[ 213], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 1376, max= 2015, per=46.88%, avg=1695.50, stdev=451.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1809KiB/s (1852kB/s)(10.0MiB/5662msec); 0 zone resets clat (msec): min=141, max=1296, avg=510.56, stdev=362.38 lat (msec): min=141, max=1296, avg=510.77, stdev=362.41 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 184], | 30.00th=[ 215], 40.00th=[ 271], 50.00th=[ 334], 60.00th=[ 489], | 70.00th=[ 693], 80.00th=[ 701], 90.00th=[ 785], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 1376, max= 4039, per=43.57%, avg=2206.14, stdev=842.29, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=7.14%, ctx=126, 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=179602: Sun Aug 23 12:18:13 2026 read: IOPS=1, BW=1174KiB/s (1202kB/s)(6144KiB/5232msec) clat (msec): min=135, max=971, avg=658.25, stdev=301.48 lat (msec): min=135, max=971, avg=658.26, stdev=301.48 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1921, max= 2035, per=55.39%, avg=2003.40, stdev=46.96, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1174KiB/s (1202kB/s)(6144KiB/5232msec); 0 zone resets clat (msec): min=81, max=401, avg=203.34, stdev=124.48 lat (msec): min=81, max=401, avg=203.58, stdev=124.65 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 167], 50.00th=[ 167], 60.00th=[ 180], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 1950, max= 4151, per=53.43%, avg=2705.33, stdev=1252.41, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 1000=33.33% cpu : usr=0.02%, sys=2.68%, ctx=62, 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=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=179603: Sun Aug 23 12:18:13 2026 read: IOPS=0, BW=966KiB/s (990kB/s)(5120KiB/5298msec) clat (msec): min=124, max=824, avg=382.23, stdev=295.82 lat (msec): min=124, max=824, avg=382.23, stdev=295.82 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1932, max= 3842, per=71.18%, avg=2574.67, stdev=1097.58, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1353KiB/s (1385kB/s)(7168KiB/5298msec); 0 zone resets clat (msec): min=146, max=1013, avg=466.29, stdev=332.56 lat (msec): min=146, max=1013, avg=466.40, stdev=332.55 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 215], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 284], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 802], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 2015, max= 2968, per=44.68%, avg=2262.25, stdev=470.58, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=41.67%, 500=16.67%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.04%, sys=3.61%, ctx=73, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3617KiB/s (3704kB/s), 362KiB/s-1384KiB/s (370kB/s-1417kB/s), io=20.0MiB (20.0MB), run=5179-5662msec WRITE: bw=5064KiB/s (5185kB/s), 989KiB/s-1809KiB/s (1012kB/s-1852kB/s), io=28.0MiB (29.4MB), run=5179-5662msec 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=179615: Sun Aug 23 12:18:27 2026 read: IOPS=1, BW=4409KiB/s (4515kB/s)(12.0MiB/2787msec) clat (msec): min=344, max=1364, avg=852.38, stdev=510.41 lat (msec): min=344, max=1364, avg=852.38, stdev=510.41 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8015, max= 8192, per=100.00%, avg=8103.50, stdev=125.16, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.80%, ctx=44, 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=179616: Sun Aug 23 12:18:27 2026 read: IOPS=0, BW=1272KiB/s (1302kB/s)(4096KiB/3221msec) clat (nsec): min=1130.9M, max=1130.9M, avg=1130938113.00, stdev= 0.00 lat (nsec): min=1130.0M, max=1130.0M, avg=1130996226.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 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=2543KiB/s (2604kB/s)(8192KiB/3221msec); 0 zone resets clat (msec): min=528, max=1329, avg=928.75, stdev=566.10 lat (msec): min=528, max=1329, avg=929.05, stdev=566.02 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 1334], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8015, max= 8015, per=80.65%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.03%, sys=3.70%, ctx=58, 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=179617: Sun Aug 23 12:18:27 2026 write: IOPS=0, BW=3727KiB/s (3816kB/s)(12.0MiB/3297msec); 0 zone resets clat (msec): min=317, max=1745, avg=1072.66, stdev=717.71 lat (msec): min=317, max=1747, avg=1074.35, stdev=718.55 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8062, max= 8126, per=81.44%, avg=8094.00, stdev=45.25, 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=5.13%, ctx=64, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179618: Sun Aug 23 12:18:27 2026 write: IOPS=1, BW=4267KiB/s (4369kB/s)(12.0MiB/2880msec); 0 zone resets clat (msec): min=266, max=1882, avg=936.31, stdev=842.48 lat (msec): min=267, max=1883, avg=937.14, stdev=842.50 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 1888], 80.00th=[ 1888], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 6122, max= 8159, per=71.85%, avg=7140.50, stdev=1440.38, 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=0.10%, sys=4.20%, ctx=41, 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=5087KiB/s (5209kB/s), 1272KiB/s-4409KiB/s (1302kB/s-4515kB/s), io=16.0MiB (16.8MB), run=2787-3221msec WRITE: bw=9939KiB/s (10.2MB/s), 2543KiB/s-4267KiB/s (2604kB/s-4369kB/s), io=32.0MiB (33.6MB), run=2880-3297msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179619: Sun Aug 23 12:18:28 2026 read: IOPS=1, BW=4428KiB/s (4534kB/s)(12.0MiB/2775msec) clat (msec): min=644, max=967, avg=854.86, stdev=182.16 lat (msec): min=644, max=967, avg=854.87, stdev=182.16 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] 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) : 750=33.33%, 1000=66.67% cpu : usr=0.14%, sys=11.54%, ctx=240, 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=179620: Sun Aug 23 12:18:28 2026 read: IOPS=0, BW=1743KiB/s (1785kB/s)(4096KiB/2350msec) clat (nsec): min=801848k, max=801848k, avg=801847530.00, stdev= 0.00 lat (nsec): min=801854k, max=801854k, avg=801853846.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3486KiB/s (3570kB/s)(8192KiB/2350msec); 0 zone resets clat (msec): min=387, max=1082, avg=735.28, stdev=491.48 lat (msec): min=393, max=1083, avg=738.29, stdev=487.97 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8192, max= 8192, per=93.10%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.00%, ctx=78, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179621: Sun Aug 23 12:18:28 2026 write: IOPS=0, BW=3300KiB/s (3379kB/s)(12.0MiB/3724msec); 0 zone resets clat (msec): min=220, max=2109, avg=1172.16, stdev=944.77 lat (msec): min=221, max=2111, avg=1173.35, stdev=944.90 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 8110, max= 8126, per=92.26%, avg=8118.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=2.69%, ctx=54, 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=179622: Sun Aug 23 12:18:28 2026 write: IOPS=1, BW=4485KiB/s (4592kB/s)(12.0MiB/2740msec); 0 zone resets clat (msec): min=457, max=1636, avg=890.03, stdev=649.03 lat (msec): min=464, max=1638, avg=893.29, stdev=647.91 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 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=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.69%, ctx=45, 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=5904KiB/s (6046kB/s), 1743KiB/s-4428KiB/s (1785kB/s-4534kB/s), io=16.0MiB (16.8MB), run=2350-2775msec WRITE: bw=8799KiB/s (9010kB/s), 3300KiB/s-4485KiB/s (3379kB/s-4592kB/s), io=32.0MiB (33.6MB), run=2350-3724msec