== sanity test 398b: DIO and buffer IO race ============== 00:26:52 (1786422412) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.59675 s, 6.6 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=178408: Tue Aug 11 00:29:10 2026 read: IOPS=12, BW=51.9KiB/s (53.1kB/s)(5992KiB/115487msec) clat (usec): min=36, max=230635, avg=42441.83, stdev=26452.64 lat (usec): min=37, max=230637, avg=42443.36, stdev=26452.75 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 11338], 10.00th=[ 17433], 20.00th=[ 22152], | 30.00th=[ 26870], 40.00th=[ 31851], 50.00th=[ 36963], 60.00th=[ 43779], | 70.00th=[ 51119], 80.00th=[ 60031], 90.00th=[ 74974], 95.00th=[ 87557], | 99.00th=[145753], 99.50th=[160433], 99.90th=[206570], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 7, max= 118, per=25.36%, avg=51.48, stdev=18.85, samples=226 iops : min= 1, max= 29, avg=12.21, stdev= 4.75, samples=226 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6296KiB/115487msec); 0 zone resets clat (usec): min=943, max=1110.1k, avg=32567.96, stdev=41746.97 lat (usec): min=944, max=1110.1k, avg=32575.55, stdev=41748.60 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1401], 10.00th=[ 1991], | 20.00th=[ 4424], 30.00th=[ 7701], 40.00th=[ 14877], | 50.00th=[ 22676], 60.00th=[ 31589], 70.00th=[ 42206], | 80.00th=[ 55313], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[ 135267], 99.50th=[ 152044], 99.90th=[ 189793], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 7, max= 152, per=25.55%, avg=54.16, stdev=24.41, samples=226 iops : min= 1, max= 38, avg=12.89, stdev= 6.15, samples=226 lat (usec) : 50=0.16%, 100=1.24%, 250=0.16%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.11%, 4=4.43%, 10=8.37%, 20=11.49%, 50=41.50% lat (msec) : 100=23.86%, 250=3.52%, 2000=0.03% cpu : usr=0.08%, sys=5.82%, ctx=6519, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178409: Tue Aug 11 00:29:10 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5940KiB/118151msec) clat (usec): min=47, max=1067.4k, avg=43828.16, stdev=37398.35 lat (usec): min=48, max=1067.4k, avg=43829.49, stdev=37398.30 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10159], 10.00th=[ 15926], | 20.00th=[ 21890], 30.00th=[ 27395], 40.00th=[ 31851], | 50.00th=[ 38011], 60.00th=[ 45351], 70.00th=[ 53216], | 80.00th=[ 63177], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[ 131597], 99.50th=[ 143655], 99.90th=[ 227541], | 99.95th=[1069548], 99.99th=[1069548] bw ( KiB/s): min= 7, max= 118, per=24.61%, avg=49.95, stdev=19.14, samples=232 iops : min= 1, max= 29, avg=11.83, stdev= 4.81, samples=232 write: IOPS=13, BW=53.7KiB/s (55.0kB/s)(6348KiB/118151msec); 0 zone resets clat (usec): min=906, max=237912, avg=33061.26, stdev=33801.19 lat (usec): min=907, max=237913, avg=33063.39, stdev=33800.84 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1434], 10.00th=[ 2008], 20.00th=[ 4178], | 30.00th=[ 7767], 40.00th=[ 14746], 50.00th=[ 23987], 60.00th=[ 32375], | 70.00th=[ 42206], 80.00th=[ 56886], 90.00th=[ 80217], 95.00th=[ 96994], | 99.00th=[156238], 99.50th=[173016], 99.90th=[214959], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 7, max= 157, per=25.27%, avg=53.57, stdev=23.90, samples=231 iops : min= 1, max= 39, avg=12.74, stdev= 6.02, samples=231 lat (usec) : 50=0.16%, 100=1.69%, 250=0.07%, 1000=0.07% lat (msec) : 2=5.11%, 4=4.79%, 10=7.91%, 20=10.94%, 50=40.36% lat (msec) : 100=25.13%, 250=3.74%, 2000=0.03% cpu : usr=0.08%, sys=5.69%, ctx=6674, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178410: Tue Aug 11 00:29:10 2026 read: IOPS=12, BW=51.5KiB/s (52.8kB/s)(6028KiB/116944msec) clat (usec): min=45, max=1076.4k, avg=44128.94, stdev=38780.23 lat (usec): min=45, max=1076.4k, avg=44131.71, stdev=38780.72 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 11076], 10.00th=[ 15533], | 20.00th=[ 21365], 30.00th=[ 26608], 40.00th=[ 31851], | 50.00th=[ 38011], 60.00th=[ 44827], 70.00th=[ 52691], | 80.00th=[ 62653], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[ 145753], 99.50th=[ 168821], 99.90th=[ 252707], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 15, max= 118, per=25.34%, avg=51.45, stdev=18.87, samples=228 iops : min= 3, max= 29, avg=12.21, stdev= 4.73, samples=228 write: IOPS=13, BW=53.5KiB/s (54.8kB/s)(6260KiB/116944msec); 0 zone resets clat (usec): min=1060, max=235413, avg=31798.54, stdev=32255.76 lat (usec): min=1061, max=235415, avg=31810.61, stdev=32250.02 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 1909], 20.00th=[ 4178], | 30.00th=[ 7701], 40.00th=[ 14091], 50.00th=[ 22414], 60.00th=[ 29754], | 70.00th=[ 40633], 80.00th=[ 57410], 90.00th=[ 79168], 95.00th=[ 91751], | 99.00th=[141558], 99.50th=[147850], 99.90th=[206570], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 8, max= 134, per=25.05%, avg=53.11, stdev=23.06, samples=229 iops : min= 2, max= 33, avg=12.63, stdev= 5.80, samples=229 lat (usec) : 50=0.16%, 100=1.60%, 250=0.10%, 500=0.03%, 750=0.03% lat (msec) : 2=5.37%, 4=4.46%, 10=7.88%, 20=12.66%, 50=39.91% lat (msec) : 100=23.89%, 250=3.84%, 500=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.58%, ctx=6597, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=178411: Tue Aug 11 00:29:10 2026 read: IOPS=13, BW=52.3KiB/s (53.6kB/s)(6052KiB/115639msec) clat (usec): min=37, max=1088.2k, avg=43759.35, stdev=38681.68 lat (usec): min=37, max=1088.2k, avg=43763.01, stdev=38680.60 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10421], 10.00th=[ 16319], | 20.00th=[ 22938], 30.00th=[ 27395], 40.00th=[ 32637], | 50.00th=[ 36963], 60.00th=[ 43779], 70.00th=[ 51119], | 80.00th=[ 62129], 90.00th=[ 76022], 95.00th=[ 90702], | 99.00th=[ 145753], 99.50th=[ 177210], 99.90th=[ 242222], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 15, max= 126, per=25.62%, avg=52.01, stdev=17.76, samples=227 iops : min= 3, max= 31, avg=12.36, stdev= 4.49, samples=227 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6236KiB/115639msec); 0 zone resets clat (usec): min=1007, max=248693, avg=31314.07, stdev=31955.79 lat (usec): min=1009, max=248694, avg=31317.07, stdev=31955.26 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 1909], 20.00th=[ 4178], | 30.00th=[ 7570], 40.00th=[ 13566], 50.00th=[ 21890], 60.00th=[ 31065], | 70.00th=[ 39584], 80.00th=[ 53216], 90.00th=[ 74974], 95.00th=[ 95945], | 99.00th=[130548], 99.50th=[160433], 99.90th=[198181], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 7, max= 126, per=25.25%, avg=53.54, stdev=23.24, samples=227 iops : min= 1, max= 31, avg=12.74, stdev= 5.85, samples=227 lat (usec) : 50=0.42%, 100=1.30%, 250=0.16%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=5.50%, 4=4.39%, 10=7.88%, 20=11.59%, 50=42.06% lat (msec) : 100=22.30%, 250=4.23%, 2000=0.03% cpu : usr=0.09%, sys=5.73%, ctx=6596, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=203KiB/s (208kB/s), 50.3KiB/s-52.3KiB/s (51.5kB/s-53.6kB/s), io=23.4MiB (24.6MB), run=115487-118151msec WRITE: bw=213KiB/s (218kB/s), 53.5KiB/s-54.5KiB/s (54.8kB/s-55.8kB/s), io=24.6MiB (25.7MB), run=115487-118151msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178413: Tue Aug 11 00:29:49 2026 read: IOPS=9, BW=38.9KiB/s (39.8kB/s)(5992KiB/154098msec) clat (msec): min=4, max=1173, avg=41.04, stdev=45.35 lat (msec): min=4, max=1173, avg=41.05, stdev=45.35 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 61], 90.00th=[ 89], 95.00th=[ 114], | 99.00th=[ 165], 99.50th=[ 180], 99.90th=[ 288], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 132, per=25.44%, avg=39.17, stdev=25.62, samples=296 iops : min= 1, max= 33, avg= 9.13, stdev= 6.47, samples=296 write: IOPS=10, BW=40.9KiB/s (41.8kB/s)(6296KiB/154098msec); 0 zone resets clat (msec): min=10, max=296, avg=58.73, stdev=40.21 lat (msec): min=10, max=296, avg=58.74, stdev=40.21 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 88], 90.00th=[ 114], 95.00th=[ 138], | 99.00th=[ 203], 99.50th=[ 239], 99.90th=[ 275], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 127, per=25.28%, avg=40.70, stdev=24.48, samples=300 iops : min= 1, max= 31, avg= 9.50, stdev= 6.15, samples=300 lat (msec) : 10=2.18%, 20=15.89%, 50=47.14%, 100=23.63%, 250=11.00% lat (msec) : 500=0.13%, 2000=0.03% cpu : usr=0.06%, sys=2.26%, ctx=4985, 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=178414: Tue Aug 11 00:29:49 2026 read: IOPS=9, BW=38.3KiB/s (39.2kB/s)(5940KiB/155116msec) clat (msec): min=4, max=1222, avg=40.51, stdev=46.91 lat (msec): min=4, max=1222, avg=40.52, stdev=46.91 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 89], 95.00th=[ 115], | 99.00th=[ 178], 99.50th=[ 197], 99.90th=[ 334], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7, max= 158, per=25.27%, avg=38.92, stdev=27.19, samples=296 iops : min= 1, max= 39, avg= 9.06, stdev= 6.84, samples=296 write: IOPS=10, BW=40.9KiB/s (41.9kB/s)(6348KiB/155116msec); 0 zone resets clat (msec): min=8, max=288, avg=59.68, stdev=40.95 lat (msec): min=8, max=288, avg=59.68, stdev=40.95 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 116], 95.00th=[ 136], | 99.00th=[ 203], 99.50th=[ 236], 99.90th=[ 271], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 127, per=25.29%, avg=40.72, stdev=25.13, samples=302 iops : min= 1, max= 31, avg= 9.51, stdev= 6.33, samples=302 lat (msec) : 10=1.92%, 20=16.80%, 50=47.23%, 100=22.20%, 250=11.65% lat (msec) : 500=0.16%, 2000=0.03% cpu : usr=0.07%, sys=2.28%, ctx=5047, 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=178415: Tue Aug 11 00:29:49 2026 read: IOPS=9, BW=38.0KiB/s (39.9kB/s)(6028KiB/154617msec) clat (msec): min=5, max=253, avg=40.53, stdev=34.84 lat (msec): min=5, max=253, avg=40.53, stdev=34.84 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 59], 90.00th=[ 87], 95.00th=[ 116], | 99.00th=[ 169], 99.50th=[ 199], 99.90th=[ 245], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 7, max= 141, per=25.30%, avg=38.96, stdev=25.46, samples=300 iops : min= 1, max= 35, avg= 9.07, stdev= 6.42, samples=300 write: IOPS=10, BW=40.5KiB/s (41.5kB/s)(6260KiB/154617msec); 0 zone resets clat (msec): min=10, max=1287, avg=59.67, stdev=49.85 lat (msec): min=10, max=1287, avg=59.67, stdev=49.85 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=[ 71], 80.00th=[ 87], 90.00th=[ 112], 95.00th=[ 136], | 99.00th=[ 190], 99.50th=[ 211], 99.90th=[ 292], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 126, per=25.10%, avg=40.42, stdev=24.30, samples=300 iops : min= 1, max= 31, avg= 9.44, stdev= 6.14, samples=300 lat (msec) : 10=2.51%, 20=15.01%, 50=46.71%, 100=24.87%, 250=10.74% lat (msec) : 500=0.13%, 2000=0.03% cpu : usr=0.06%, sys=2.18%, ctx=5026, 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=178416: Tue Aug 11 00:29:49 2026 read: IOPS=9, BW=38.9KiB/s (39.9kB/s)(6052KiB/155420msec) clat (msec): min=5, max=330, avg=40.88, stdev=36.31 lat (msec): min=5, max=330, avg=40.88, stdev=36.31 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 91], 95.00th=[ 115], | 99.00th=[ 171], 99.50th=[ 209], 99.90th=[ 296], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 166, per=25.64%, avg=39.49, stdev=27.35, samples=298 iops : min= 1, max= 41, avg= 9.20, stdev= 6.88, samples=298 write: IOPS=10, BW=40.1KiB/s (41.1kB/s)(6236KiB/155420msec); 0 zone resets clat (msec): min=10, max=1299, avg=59.90, stdev=51.56 lat (msec): min=10, max=1299, avg=59.90, stdev=51.56 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 69], 80.00th=[ 89], 90.00th=[ 115], 95.00th=[ 140], | 99.00th=[ 203], 99.50th=[ 236], 99.90th=[ 292], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 111, per=24.79%, avg=39.92, stdev=24.20, samples=303 iops : min= 1, max= 27, avg= 9.31, stdev= 6.09, samples=303 lat (msec) : 10=2.70%, 20=17.25%, 50=44.63%, 100=24.41%, 250=10.74% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.07%, sys=2.26%, ctx=5041, 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 (158kB/s), 38.3KiB/s-38.0KiB/s (39.2kB/s-39.9kB/s), io=23.4MiB (24.6MB), run=154098-155420msec WRITE: bw=162KiB/s (166kB/s), 40.1KiB/s-40.9KiB/s (41.1kB/s-41.9kB/s), io=24.6MiB (25.7MB), run=154098-155420msec 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=178459: Tue Aug 11 00:30:35 2026 read: IOPS=10, BW=167KiB/s (171kB/s)(5920KiB/35430msec) clat (usec): min=40, max=247422, avg=53327.15, stdev=39057.05 lat (usec): min=40, max=247423, avg=53339.06, stdev=39061.55 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 64], 10.00th=[ 255], 20.00th=[ 22414], | 30.00th=[ 31327], 40.00th=[ 39060], 50.00th=[ 46924], 60.00th=[ 55313], | 70.00th=[ 64226], 80.00th=[ 80217], 90.00th=[104334], 95.00th=[132645], | 99.00th=[168821], 99.50th=[212861], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 29, max= 380, per=25.33%, avg=167.15, stdev=71.99, samples=68 iops : min= 1, max= 23, avg= 9.68, stdev= 4.53, samples=68 write: IOPS=11, BW=180KiB/s (184kB/s)(6368KiB/35430msec); 0 zone resets clat (usec): min=1301, max=266666, avg=38694.49, stdev=41537.58 lat (usec): min=1303, max=266669, avg=38705.15, stdev=41534.26 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1975], 10.00th=[ 2704], 20.00th=[ 5473], | 30.00th=[ 9896], 40.00th=[ 16188], 50.00th=[ 23200], 60.00th=[ 36963], | 70.00th=[ 49021], 80.00th=[ 63701], 90.00th=[ 95945], 95.00th=[123208], | 99.00th=[189793], 99.50th=[206570], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 31, max= 505, per=26.09%, avg=181.31, stdev=93.83, samples=68 iops : min= 1, max= 31, avg=10.57, stdev= 5.90, samples=68 lat (usec) : 50=0.26%, 100=4.17%, 250=0.26%, 500=0.26%, 750=0.13% lat (msec) : 2=2.99%, 4=4.56%, 10=8.46%, 20=9.51%, 50=31.90% lat (msec) : 100=27.21%, 250=10.16%, 500=0.13% cpu : usr=0.06%, sys=5.29%, ctx=1641, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178460: Tue Aug 11 00:30:35 2026 read: IOPS=9, BW=158KiB/s (162kB/s)(5744KiB/36245msec) clat (usec): min=30, max=220146, avg=52777.22, stdev=38118.13 lat (usec): min=30, max=220148, avg=52778.34, stdev=38118.13 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 93], 20.00th=[ 24249], | 30.00th=[ 31851], 40.00th=[ 39584], 50.00th=[ 46924], 60.00th=[ 54264], | 70.00th=[ 63701], 80.00th=[ 78119], 90.00th=[ 98042], 95.00th=[125305], | 99.00th=[187696], 99.50th=[200279], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 29, max= 383, per=24.12%, avg=159.16, stdev=75.22, samples=69 iops : min= 1, max= 23, avg= 9.17, stdev= 4.69, samples=69 write: IOPS=11, BW=181KiB/s (185kB/s)(6544KiB/36245msec); 0 zone resets clat (usec): min=1581, max=390298, avg=41460.45, stdev=46550.47 lat (usec): min=1583, max=390300, avg=41467.52, stdev=46555.19 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2073], 10.00th=[ 3425], 20.00th=[ 6783], | 30.00th=[ 10028], 40.00th=[ 16581], 50.00th=[ 25297], 60.00th=[ 35914], | 70.00th=[ 48497], 80.00th=[ 70779], 90.00th=[108528], 95.00th=[135267], | 99.00th=[187696], 99.50th=[196084], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 30, max= 448, per=25.19%, avg=175.09, stdev=83.77, samples=70 iops : min= 1, max= 28, avg=10.17, stdev= 5.34, samples=70 lat (usec) : 50=0.52%, 100=4.17%, 250=0.13% lat (msec) : 2=2.21%, 4=3.78%, 10=10.16%, 20=9.51%, 50=32.94% lat (msec) : 100=25.65%, 250=10.81%, 500=0.13% cpu : usr=0.05%, sys=5.23%, ctx=1620, 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=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=178461: Tue Aug 11 00:30:35 2026 read: IOPS=10, BW=176KiB/s (180kB/s)(6256KiB/35627msec) clat (usec): min=40, max=234877, avg=52540.28, stdev=38960.63 lat (usec): min=40, max=234878, avg=52552.61, stdev=38966.03 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 60], 10.00th=[ 2540], 20.00th=[ 23200], | 30.00th=[ 30540], 40.00th=[ 36963], 50.00th=[ 44827], 60.00th=[ 52691], | 70.00th=[ 62653], 80.00th=[ 78119], 90.00th=[107480], 95.00th=[132645], | 99.00th=[183501], 99.50th=[200279], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 379, per=26.31%, avg=173.62, stdev=83.96, samples=69 iops : min= 1, max= 23, avg=10.09, stdev= 5.30, samples=69 write: IOPS=10, BW=169KiB/s (173kB/s)(6032KiB/35627msec); 0 zone resets clat (usec): min=1557, max=543815, avg=39366.74, stdev=45156.38 lat (usec): min=1559, max=543818, avg=39369.51, stdev=45156.08 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 1958], 10.00th=[ 3064], 20.00th=[ 7308], | 30.00th=[ 12387], 40.00th=[ 19268], 50.00th=[ 27395], 60.00th=[ 35390], | 70.00th=[ 45351], 80.00th=[ 64226], 90.00th=[ 92799], 95.00th=[121111], | 99.00th=[154141], 99.50th=[189793], 99.90th=[541066], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 31, max= 541, per=24.46%, avg=170.01, stdev=87.00, samples=67 iops : min= 1, max= 33, avg= 9.87, stdev= 5.48, samples=67 lat (usec) : 50=0.91%, 100=4.04%, 500=0.13% lat (msec) : 2=2.73%, 4=4.56%, 10=5.86%, 20=10.42%, 50=35.81% lat (msec) : 100=24.48%, 250=10.94%, 750=0.13% cpu : usr=0.07%, sys=5.38%, ctx=1660, 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=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=178462: Tue Aug 11 00:30:35 2026 read: IOPS=10, BW=173KiB/s (177kB/s)(6032KiB/34891msec) clat (usec): min=47, max=287325, avg=53939.37, stdev=40153.75 lat (usec): min=48, max=287326, avg=53940.81, stdev=40153.63 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 3556], 20.00th=[ 23725], | 30.00th=[ 31851], 40.00th=[ 39060], 50.00th=[ 47449], 60.00th=[ 54264], | 70.00th=[ 63701], 80.00th=[ 82314], 90.00th=[104334], 95.00th=[123208], | 99.00th=[175113], 99.50th=[267387], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 62, max= 384, per=26.04%, avg=171.87, stdev=85.10, samples=68 iops : min= 3, max= 24, avg= 9.97, stdev= 5.38, samples=68 write: IOPS=11, BW=179KiB/s (184kB/s)(6256KiB/34891msec); 0 zone resets clat (usec): min=1348, max=237916, avg=36996.11, stdev=40618.89 lat (usec): min=1350, max=237918, avg=36998.40, stdev=40618.76 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 1975], 10.00th=[ 2737], 20.00th=[ 5407], | 30.00th=[ 8160], 40.00th=[ 15139], 50.00th=[ 23725], 60.00th=[ 32375], | 70.00th=[ 43254], 80.00th=[ 59507], 90.00th=[ 92799], 95.00th=[131597], | 99.00th=[164627], 99.50th=[179307], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 510, per=25.73%, avg=178.82, stdev=105.16, samples=68 iops : min= 1, max= 31, avg=10.41, stdev= 6.65, samples=68 lat (usec) : 50=0.26%, 100=4.04%, 250=0.13%, 750=0.13% lat (msec) : 2=3.26%, 4=4.56%, 10=9.38%, 20=8.72%, 50=34.11% lat (msec) : 100=25.26%, 250=9.90%, 500=0.26% cpu : usr=0.06%, sys=5.21%, ctx=1647, 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=661KiB/s (677kB/s), 158KiB/s-176KiB/s (162kB/s-180kB/s), io=23.4MiB (24.5MB), run=34891-36245msec WRITE: bw=695KiB/s (712kB/s), 169KiB/s-181KiB/s (173kB/s-185kB/s), io=24.6MiB (25.8MB), run=34891-36245msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178464: Tue Aug 11 00:30:45 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(5920KiB/44633msec) clat (msec): min=6, max=632, avg=49.61, stdev=57.86 lat (msec): min=6, max=632, avg=49.69, stdev=57.99 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 37], | 70.00th=[ 52], 80.00th=[ 67], 90.00th=[ 109], 95.00th=[ 157], | 99.00th=[ 259], 99.50th=[ 292], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 31, max= 479, per=25.61%, avg=136.78, stdev=103.14, samples=85 iops : min= 1, max= 29, avg= 7.73, stdev= 6.52, samples=85 write: IOPS=8, BW=143KiB/s (146kB/s)(6368KiB/44633msec); 0 zone resets clat (msec): min=13, max=408, avg=65.76, stdev=56.21 lat (msec): min=13, max=408, avg=65.76, stdev=56.21 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 54], | 70.00th=[ 70], 80.00th=[ 100], 90.00th=[ 146], 95.00th=[ 186], | 99.00th=[ 268], 99.50th=[ 401], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 31, max= 447, per=26.21%, avg=147.28, stdev=104.96, samples=85 iops : min= 1, max= 27, avg= 8.39, stdev= 6.64, samples=85 lat (msec) : 10=2.08%, 20=14.71%, 50=45.70%, 100=21.74%, 250=14.58% lat (msec) : 500=1.04%, 750=0.13% cpu : usr=0.05%, sys=1.99%, ctx=1240, 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=178465: Tue Aug 11 00:30:45 2026 read: IOPS=8, BW=128KiB/s (131kB/s)(5744KiB/44833msec) clat (msec): min=7, max=328, avg=46.96, stdev=48.75 lat (msec): min=7, max=328, avg=46.97, stdev=48.75 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 45], 80.00th=[ 66], 90.00th=[ 116], 95.00th=[ 155], | 99.00th=[ 230], 99.50th=[ 292], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 416, per=26.04%, avg=139.04, stdev=102.22, samples=80 iops : min= 1, max= 26, avg= 7.86, stdev= 6.50, samples=80 write: IOPS=9, BW=146KiB/s (149kB/s)(6544KiB/44833msec); 0 zone resets clat (msec): min=13, max=497, avg=68.02, stdev=62.78 lat (msec): min=13, max=497, avg=68.03, stdev=62.78 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 55], | 70.00th=[ 78], 80.00th=[ 104], 90.00th=[ 144], 95.00th=[ 194], | 99.00th=[ 317], 99.50th=[ 321], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 30, max= 510, per=26.54%, avg=149.15, stdev=113.53, samples=85 iops : min= 1, max= 31, avg= 8.51, stdev= 7.15, samples=85 lat (msec) : 10=1.17%, 20=15.76%, 50=48.05%, 100=18.75%, 250=14.58% lat (msec) : 500=1.69% cpu : usr=0.05%, sys=1.94%, ctx=1283, 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=178466: Tue Aug 11 00:30:45 2026 read: IOPS=8, BW=141KiB/s (144kB/s)(6256KiB/44361msec) clat (msec): min=6, max=592, avg=47.73, stdev=55.61 lat (msec): min=6, max=592, avg=47.73, stdev=55.61 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 47], 80.00th=[ 66], 90.00th=[ 106], 95.00th=[ 150], | 99.00th=[ 259], 99.50th=[ 338], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 30, max= 512, per=26.80%, avg=143.10, stdev=120.30, samples=86 iops : min= 1, max= 32, avg= 8.12, stdev= 7.62, samples=86 write: IOPS=8, BW=136KiB/s (139kB/s)(6032KiB/44361msec); 0 zone resets clat (msec): min=12, max=358, avg=67.77, stdev=56.21 lat (msec): min=12, max=358, avg=67.77, stdev=56.21 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 47], 60.00th=[ 63], | 70.00th=[ 78], 80.00th=[ 100], 90.00th=[ 144], 95.00th=[ 190], | 99.00th=[ 300], 99.50th=[ 309], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 447, per=24.61%, avg=138.33, stdev=97.83, samples=84 iops : min= 1, max= 27, avg= 7.83, stdev= 6.17, samples=84 lat (msec) : 10=1.56%, 20=17.06%, 50=43.88%, 100=22.27%, 250=13.93% lat (msec) : 500=1.17%, 750=0.13% cpu : usr=0.05%, sys=1.87%, ctx=1270, 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=178467: Tue Aug 11 00:30:45 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6032KiB/44379msec) clat (msec): min=6, max=359, avg=48.27, stdev=48.40 lat (msec): min=6, max=359, avg=48.27, stdev=48.40 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 37], | 70.00th=[ 50], 80.00th=[ 77], 90.00th=[ 116], 95.00th=[ 153], | 99.00th=[ 241], 99.50th=[ 266], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 510, per=25.89%, avg=138.25, stdev=105.87, samples=85 iops : min= 1, max= 31, avg= 7.85, stdev= 6.66, samples=85 write: IOPS=8, BW=141KiB/s (144kB/s)(6256KiB/44379msec); 0 zone resets clat (msec): min=12, max=384, avg=66.83, stdev=60.14 lat (msec): min=12, max=384, avg=66.84, stdev=60.14 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 57], | 70.00th=[ 72], 80.00th=[ 94], 90.00th=[ 144], 95.00th=[ 203], | 99.00th=[ 313], 99.50th=[ 334], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 30, max= 415, per=26.67%, avg=149.90, stdev=103.46, samples=82 iops : min= 1, max= 25, avg= 8.59, stdev= 6.51, samples=82 lat (msec) : 10=2.08%, 20=16.28%, 50=45.18%, 100=20.44%, 250=14.58% lat (msec) : 500=1.43% cpu : usr=0.07%, sys=2.08%, ctx=1301, 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=534KiB/s (547kB/s), 128KiB/s-141KiB/s (131kB/s-144kB/s), io=23.4MiB (24.5MB), run=44361-44833msec WRITE: bw=562KiB/s (576kB/s), 136KiB/s-146KiB/s (139kB/s-149kB/s), io=24.6MiB (25.8MB), run=44361-44833msec 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=178480: Tue Aug 11 00:31:00 2026 read: IOPS=2, BW=3002KiB/s (3074kB/s)(7168KiB/2388msec) clat (usec): min=548, max=312218, avg=177362.34, stdev=99939.87 lat (usec): min=549, max=312219, avg=177363.74, stdev=99939.95 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[139461], | 30.00th=[152044], 40.00th=[152044], 50.00th=[179307], 60.00th=[187696], | 70.00th=[187696], 80.00th=[267387], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 1988, max= 4266, per=55.83%, avg=2584.00, stdev=1121.61, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=2, BW=2144KiB/s (2196kB/s)(5120KiB/2388msec); 0 zone resets clat (msec): min=83, max=372, avg=222.87, stdev=116.73 lat (msec): min=83, max=372, avg=222.94, stdev=116.73 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 255], 60.00th=[ 255], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 1988, max= 4079, per=41.72%, avg=2703.33, stdev=1191.68, 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=41.67%, 500=41.67% cpu : usr=0.00%, sys=20.61%, ctx=105, 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=178481: Tue Aug 11 00:31:00 2026 read: IOPS=0, BW=463KiB/s (474kB/s)(2048KiB/4425msec) clat (usec): min=800, max=131372, avg=66086.35, stdev=92328.48 lat (usec): min=801, max=131374, avg=66087.94, stdev=92329.26 clat percentiles (usec): | 1.00th=[ 799], 5.00th=[ 799], 10.00th=[ 799], 20.00th=[ 799], | 30.00th=[ 799], 40.00th=[ 799], 50.00th=[ 799], 60.00th=[131597], | 70.00th=[131597], 80.00th=[131597], 90.00th=[131597], 95.00th=[131597], | 99.00th=[131597], 99.50th=[131597], 99.90th=[131597], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 1460, max= 1939, per=36.72%, avg=1699.50, stdev=338.70, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2314KiB/s (2370kB/s)(10.0MiB/4425msec); 0 zone resets clat (msec): min=214, max=804, avg=419.83, stdev=200.44 lat (msec): min=214, max=806, avg=420.06, stdev=200.69 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 220], | 30.00th=[ 251], 40.00th=[ 275], 50.00th=[ 351], 60.00th=[ 359], | 70.00th=[ 558], 80.00th=[ 567], 90.00th=[ 600], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1988, max= 5818, per=46.28%, avg=2998.33, stdev=1605.65, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=15.89%, ctx=219, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178482: Tue Aug 11 00:31:00 2026 read: IOPS=1, BW=1923KiB/s (1969kB/s)(6144KiB/3195msec) clat (usec): min=755, max=275805, avg=150828.18, stdev=103669.37 lat (usec): min=756, max=275806, avg=150829.45, stdev=103669.30 clat percentiles (usec): | 1.00th=[ 758], 5.00th=[ 758], 10.00th=[ 758], 20.00th=[ 50070], | 30.00th=[ 50070], 40.00th=[187696], 50.00th=[187696], 60.00th=[187696], | 70.00th=[202376], 80.00th=[202376], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 4079, max= 5785, per=100.00%, avg=4932.00, stdev=1206.32, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1923KiB/s (1969kB/s)(6144KiB/3195msec); 0 zone resets clat (msec): min=135, max=545, avg=368.02, stdev=147.68 lat (msec): min=136, max=545, avg=368.08, stdev=147.68 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 376], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1928, max= 2929, per=34.30%, avg=2222.00, stdev=473.67, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=16.25%, ctx=140, 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=178483: Tue Aug 11 00:31:00 2026 read: IOPS=1, BW=1662KiB/s (1702kB/s)(5120KiB/3080msec) clat (usec): min=981, max=318550, avg=230521.12, stdev=131935.69 lat (usec): min=982, max=318551, avg=230522.32, stdev=131935.69 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 979], 10.00th=[ 979], 20.00th=[ 979], | 30.00th=[240124], 40.00th=[240124], 50.00th=[283116], 60.00th=[283116], | 70.00th=[308282], 80.00th=[308282], 90.00th=[316670], 95.00th=[316670], | 99.00th=[316670], 99.50th=[316670], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 1928, max= 3976, per=57.21%, avg=2647.67, stdev=1151.71, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2327KiB/s (2383kB/s)(7168KiB/3080msec); 0 zone resets clat (msec): min=101, max=401, avg=262.90, stdev=116.47 lat (msec): min=101, max=401, avg=262.99, stdev=116.48 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 138], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 296], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 380], 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= 1469, max= 4087, per=36.75%, avg=2380.75, stdev=1163.95, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 250=33.33%, 500=58.33% cpu : usr=0.00%, sys=16.34%, ctx=180, 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=4628KiB/s (4739kB/s), 463KiB/s-3002KiB/s (474kB/s-3074kB/s), io=20.0MiB (20.0MB), run=2388-4425msec WRITE: bw=6480KiB/s (6635kB/s), 1923KiB/s-2327KiB/s (1969kB/s-2383kB/s), io=28.0MiB (29.4MB), run=2388-4425msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178485: Tue Aug 11 00:31:00 2026 read: IOPS=1, BW=1780KiB/s (1823kB/s)(7168KiB/4026msec) clat (msec): min=90, max=1119, avg=306.56, stdev=366.79 lat (msec): min=90, max=1119, avg=306.56, stdev=366.79 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 114], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 159], 60.00th=[ 194], | 70.00th=[ 194], 80.00th=[ 326], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1610, max= 3737, per=49.69%, avg=2296.20, stdev=827.13, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1272KiB/s (1302kB/s)(5120KiB/4026msec); 0 zone resets clat (msec): min=73, max=607, avg=361.84, stdev=202.34 lat (msec): min=73, max=608, avg=361.93, stdev=202.34 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 2043, max= 4039, per=41.86%, avg=2708.33, stdev=1152.39, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=7.68%, ctx=124, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178486: Tue Aug 11 00:31:00 2026 read: IOPS=0, BW=462KiB/s (473kB/s)(2048KiB/4431msec) clat (msec): min=226, max=582, avg=404.61, stdev=251.53 lat (msec): min=226, max=582, avg=404.61, stdev=251.53 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2027, max= 2043, per=44.04%, avg=2035.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2311KiB/s (2366kB/s)(10.0MiB/4431msec); 0 zone resets clat (msec): min=92, max=914, avg=360.98, stdev=294.32 lat (msec): min=92, max=914, avg=361.22, stdev=294.38 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 103], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 184], 60.00th=[ 230], | 70.00th=[ 456], 80.00th=[ 558], 90.00th=[ 760], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1868, max= 6131, per=41.61%, avg=2692.00, stdev=1686.17, samples=6 iops : min= 1, max= 5, avg= 1.83, stdev= 1.60, samples=6 lat (msec) : 100=8.33%, 250=50.00%, 500=8.33%, 750=16.67%, 1000=16.67% cpu : usr=0.05%, sys=6.86%, ctx=92, 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=178487: Tue Aug 11 00:31:00 2026 read: IOPS=1, BW=1620KiB/s (1659kB/s)(6144KiB/3792msec) clat (msec): min=87, max=734, avg=244.52, stdev=246.86 lat (msec): min=87, max=734, avg=244.53, stdev=246.86 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 127], 50.00th=[ 127], 60.00th=[ 150], | 70.00th=[ 257], 80.00th=[ 257], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1868, max= 4087, per=54.19%, avg=2504.25, stdev=1058.01, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1620KiB/s (1659kB/s)(6144KiB/3792msec); 0 zone resets clat (msec): min=66, max=728, avg=386.88, stdev=237.37 lat (msec): min=66, max=728, avg=386.96, stdev=237.36 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 468], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1868, max= 2048, per=31.00%, avg=2005.80, stdev=77.44, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=6.23%, 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=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=178488: Tue Aug 11 00:31:00 2026 read: IOPS=1, BW=1226KiB/s (1255kB/s)(5120KiB/4176msec) clat (msec): min=50, max=470, avg=215.71, stdev=177.26 lat (msec): min=50, max=470, avg=215.71, stdev=177.26 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 122], 60.00th=[ 122], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 1868, max= 4087, per=57.52%, avg=2658.00, stdev=1239.85, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1716KiB/s (1758kB/s)(7168KiB/4176msec); 0 zone resets clat (msec): min=110, max=1087, avg=432.84, stdev=337.02 lat (msec): min=110, max=1087, avg=432.96, stdev=336.99 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 174], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 351], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 567], 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= 2043, max= 3737, per=40.33%, avg=2609.33, stdev=976.59, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=5.82%, ctx=94, 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=4622KiB/s (4733kB/s), 462KiB/s-1780KiB/s (473kB/s-1823kB/s), io=20.0MiB (20.0MB), run=3792-4431msec WRITE: bw=6471KiB/s (6626kB/s), 1272KiB/s-2311KiB/s (1302kB/s-2366kB/s), io=28.0MiB (29.4MB), run=3792-4431msec 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=178495: Tue Aug 11 00:31:14 2026 read: IOPS=1, BW=4364KiB/s (4468kB/s)(12.0MiB/2816msec) clat (msec): min=780, max=947, avg=850.20, stdev=86.58 lat (msec): min=780, max=947, avg=850.20, stdev=86.58 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8078, max= 8126, per=100.00%, avg=8102.00, stdev=33.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=3.13%, ctx=61, 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=178498: Tue Aug 11 00:31:14 2026 read: IOPS=0, BW=1700KiB/s (1740kB/s)(4096KiB/2410msec) clat (nsec): min=316146k, max=316146k, avg=316146267.00, stdev= 0.00 lat (nsec): min=316149k, max=316149k, avg=316149196.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 6360, max= 6360, per=100.00%, avg=6360.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3399KiB/s (3481kB/s)(8192KiB/2410msec); 0 zone resets clat (msec): min=819, max=1158, avg=989.15, stdev=239.57 lat (msec): min=820, max=1159, avg=989.88, stdev=239.19 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7670, max= 7670, per=76.40%, avg=7670.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.10%, ctx=46, 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=178499: Tue Aug 11 00:31:14 2026 write: IOPS=0, BW=3765KiB/s (3855kB/s)(12.0MiB/3264msec); 0 zone resets clat (msec): min=228, max=1774, avg=1056.05, stdev=778.81 lat (msec): min=229, max=1775, avg=1057.17, stdev=778.88 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8031, max= 8126, per=80.47%, avg=8078.50, stdev=67.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.37%, ctx=73, 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=178501: Tue Aug 11 00:31:14 2026 write: IOPS=0, BW=3972KiB/s (4067kB/s)(12.0MiB/3094msec); 0 zone resets clat (msec): min=377, max=1818, avg=946.24, stdev=767.27 lat (msec): min=377, max=1819, avg=946.69, stdev=767.11 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7670, max= 8078, per=78.43%, avg=7874.00, stdev=288.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.59%, ctx=52, 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=5818KiB/s (5958kB/s), 1700KiB/s-4364KiB/s (1740kB/s-4468kB/s), io=16.0MiB (16.8MB), run=2410-2816msec WRITE: bw=9.80MiB/s (10.3MB/s), 3399KiB/s-3972KiB/s (3481kB/s-4067kB/s), io=32.0MiB (33.6MB), run=2410-3264msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178496: Tue Aug 11 00:31:14 2026 read: IOPS=1, BW=4957KiB/s (5076kB/s)(12.0MiB/2479msec) clat (msec): min=729, max=848, avg=785.64, stdev=59.75 lat (msec): min=729, max=848, avg=785.64, stdev=59.75 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7236, max= 8126, per=100.00%, avg=7681.00, stdev=629.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=13.88%, ctx=333, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178497: Tue Aug 11 00:31:14 2026 read: IOPS=0, BW=1435KiB/s (1469kB/s)(4096KiB/2855msec) clat (nsec): min=621911k, max=621911k, avg=621910789.00, stdev= 0.00 lat (nsec): min=621914k, max=621914k, avg=621913943.00, stdev= 0.00 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=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 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=2869KiB/s (2938kB/s)(8192KiB/2855msec); 0 zone resets clat (msec): min=824, max=1067, avg=946.14, stdev=171.48 lat (msec): min=825, max=1067, avg=946.59, stdev=171.41 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 1070], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 8159, max= 8159, per=87.92%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=4.80%, ctx=140, 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=178500: Tue Aug 11 00:31:14 2026 write: IOPS=0, BW=3480KiB/s (3564kB/s)(12.0MiB/3531msec); 0 zone resets clat (msec): min=240, max=2237, avg=1129.69, stdev=1016.08 lat (msec): min=241, max=2237, avg=1130.13, stdev=1016.02 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 8000, max= 8000, per=86.21%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.57%, ctx=68, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178502: Tue Aug 11 00:31:14 2026 write: IOPS=1, BW=4412KiB/s (4518kB/s)(12.0MiB/2785msec); 0 zone resets clat (msec): min=382, max=1949, avg=911.70, stdev=898.46 lat (msec): min=382, max=1949, avg=912.10, stdev=898.61 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 1955], 80.00th=[ 1955], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 7301, max= 8126, per=83.12%, avg=7713.50, stdev=583.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.13%, ctx=58, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5739KiB/s (5876kB/s), 1435KiB/s-4957KiB/s (1469kB/s-5076kB/s), io=16.0MiB (16.8MB), run=2479-2855msec WRITE: bw=9280KiB/s (9503kB/s), 2869KiB/s-4412KiB/s (2938kB/s-4518kB/s), io=32.0MiB (33.6MB), run=2785-3531msec