== sanity test 398c: run fio to test AIO ================= 20:17:14 (1786407434) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.549602 s, 76.3 MB/s osc.lustre-OST0000-osc-ffff8e88c8a1d000.rpc_stats=clear writing 40M to OST0 by fio with 4 jobs... rand-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 ... fio-3.19 Starting 4 processes rand-write: (groupid=0, jobs=1): err= 0: pid=179521: Mon Aug 10 20:17:54 2026 write: IOPS=86, BW=346KiB/s (354kB/s)(10.0MiB/29610msec); 0 zone resets slat (usec): min=39, max=19662, avg=302.06, stdev=892.10 clat (msec): min=23, max=358, avg=184.42, stdev=52.99 lat (msec): min=23, max=358, avg=184.73, stdev=52.95 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 106], 10.00th=[ 122], 20.00th=[ 138], | 30.00th=[ 153], 40.00th=[ 165], 50.00th=[ 182], 60.00th=[ 194], | 70.00th=[ 209], 80.00th=[ 228], 90.00th=[ 257], 95.00th=[ 279], | 99.00th=[ 313], 99.50th=[ 347], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 359] bw ( KiB/s): min= 127, max= 671, per=25.13%, avg=344.74, stdev=89.62, samples=58 iops : min= 31, max= 167, avg=85.86, stdev=22.44, samples=58 lat (msec) : 50=0.20%, 100=4.26%, 250=83.28%, 500=12.27% cpu : usr=0.25%, sys=1.22%, ctx=2600, majf=0, minf=8 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=179522: Mon Aug 10 20:17:54 2026 write: IOPS=85, BW=343KiB/s (351kB/s)(10.0MiB/29849msec); 0 zone resets slat (usec): min=36, max=13725, avg=278.30, stdev=775.93 clat (msec): min=31, max=371, avg=185.29, stdev=51.55 lat (msec): min=31, max=372, avg=185.57, stdev=51.56 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 107], 10.00th=[ 127], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 180], 60.00th=[ 192], | 70.00th=[ 209], 80.00th=[ 230], 90.00th=[ 257], 95.00th=[ 279], | 99.00th=[ 317], 99.50th=[ 351], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 191, max= 625, per=24.91%, avg=341.73, stdev=82.55, samples=59 iops : min= 47, max= 156, avg=85.07, stdev=20.67, samples=59 lat (msec) : 50=0.04%, 100=4.22%, 250=84.65%, 500=11.09% cpu : usr=0.14%, sys=1.20%, ctx=2709, majf=0, minf=8 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=179523: Mon Aug 10 20:17:54 2026 write: IOPS=85, BW=343KiB/s (351kB/s)(10.0MiB/29854msec); 0 zone resets slat (usec): min=36, max=23671, avg=278.38, stdev=956.37 clat (msec): min=68, max=356, avg=185.48, stdev=51.11 lat (msec): min=68, max=357, avg=185.76, stdev=51.12 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 114], 10.00th=[ 123], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 167], 50.00th=[ 182], 60.00th=[ 194], | 70.00th=[ 209], 80.00th=[ 226], 90.00th=[ 259], 95.00th=[ 279], | 99.00th=[ 330], 99.50th=[ 351], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 127, max= 632, per=24.89%, avg=341.56, stdev=87.63, samples=59 iops : min= 31, max= 158, avg=85.05, stdev=21.97, samples=59 lat (msec) : 100=2.70%, 250=85.31%, 500=11.99% cpu : usr=0.11%, sys=0.99%, ctx=2184, majf=0, minf=9 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=179524: Mon Aug 10 20:17:54 2026 write: IOPS=86, BW=344KiB/s (353kB/s)(10.0MiB/29743msec); 0 zone resets slat (usec): min=36, max=20049, avg=280.02, stdev=907.37 clat (msec): min=76, max=400, avg=185.12, stdev=52.39 lat (msec): min=76, max=401, avg=185.41, stdev=52.40 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 107], 10.00th=[ 128], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 180], 60.00th=[ 192], | 70.00th=[ 207], 80.00th=[ 230], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 313], 99.50th=[ 372], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 184, max= 625, per=24.97%, avg=342.54, stdev=83.06, samples=59 iops : min= 46, max= 156, avg=85.31, stdev=20.79, samples=59 lat (msec) : 100=4.45%, 250=84.96%, 500=10.59% cpu : usr=0.16%, sys=1.14%, ctx=2470, majf=0, minf=9 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 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): WRITE: bw=1372KiB/s (1405kB/s), 343KiB/s-346KiB/s (351kB/s-354kB/s), io=40.0MiB (41.9MB), run=29610-29854msec mix rw 40M to OST0 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179539: Mon Aug 10 20:18:38 2026 read: IOPS=38, BW=154KiB/s (157kB/s)(5048KiB/32854msec) slat (usec): min=2195, max=78800, avg=14383.42, stdev=9293.16 clat (msec): min=50, max=502, avg=196.99, stdev=72.21 lat (msec): min=61, max=565, avg=211.38, stdev=76.31 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 96], 10.00th=[ 111], 20.00th=[ 136], | 30.00th=[ 157], 40.00th=[ 176], 50.00th=[ 188], 60.00th=[ 203], | 70.00th=[ 224], 80.00th=[ 247], 90.00th=[ 296], 95.00th=[ 326], | 99.00th=[ 426], 99.50th=[ 464], 99.90th=[ 481], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 31, max= 326, per=25.02%, avg=152.60, stdev=53.06, samples=65 iops : min= 7, max= 81, avg=37.65, stdev=13.33, samples=65 write: IOPS=39, BW=158KiB/s (162kB/s)(5192KiB/32854msec); 0 zone resets slat (usec): min=43, max=25803, avg=283.19, stdev=1185.98 clat (msec): min=49, max=467, avg=195.94, stdev=70.35 lat (msec): min=49, max=467, avg=196.23, stdev=70.41 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 93], 10.00th=[ 109], 20.00th=[ 136], | 30.00th=[ 157], 40.00th=[ 174], 50.00th=[ 192], 60.00th=[ 207], | 70.00th=[ 222], 80.00th=[ 249], 90.00th=[ 288], 95.00th=[ 321], | 99.00th=[ 426], 99.50th=[ 439], 99.90th=[ 456], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 31, max= 351, per=24.76%, avg=157.25, stdev=65.83, samples=65 iops : min= 7, max= 87, avg=38.82, stdev=16.45, samples=65 lat (msec) : 50=0.04%, 100=6.41%, 250=74.34%, 500=19.18%, 750=0.04% cpu : usr=0.27%, sys=1.93%, ctx=4281, majf=0, minf=12 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1262,1298,0,0 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: Mon Aug 10 20:18:38 2026 read: IOPS=38, BW=152KiB/s (156kB/s)(4976KiB/32633msec) slat (usec): min=62, max=94932, avg=14432.93, stdev=9531.02 clat (msec): min=40, max=469, avg=192.29, stdev=67.87 lat (msec): min=42, max=506, avg=206.73, stdev=71.98 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 93], 10.00th=[ 109], 20.00th=[ 134], | 30.00th=[ 155], 40.00th=[ 169], 50.00th=[ 188], 60.00th=[ 203], | 70.00th=[ 222], 80.00th=[ 243], 90.00th=[ 288], 95.00th=[ 321], | 99.00th=[ 376], 99.50th=[ 409], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 79, max= 320, per=24.94%, avg=152.12, stdev=55.26, samples=64 iops : min= 19, max= 80, avg=37.53, stdev=13.85, samples=64 write: IOPS=40, BW=161KiB/s (165kB/s)(5264KiB/32633msec); 0 zone resets slat (usec): min=38, max=20922, avg=252.78, stdev=779.03 clat (msec): min=66, max=531, avg=200.41, stdev=72.33 lat (msec): min=66, max=532, avg=200.67, stdev=72.43 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 103], 10.00th=[ 114], 20.00th=[ 140], | 30.00th=[ 159], 40.00th=[ 180], 50.00th=[ 194], 60.00th=[ 207], | 70.00th=[ 226], 80.00th=[ 253], 90.00th=[ 296], 95.00th=[ 338], | 99.00th=[ 435], 99.50th=[ 464], 99.90th=[ 506], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 55, max= 327, per=25.44%, avg=161.53, stdev=58.36, samples=64 iops : min= 13, max= 81, avg=39.89, stdev=14.61, samples=64 lat (msec) : 50=0.12%, 100=5.78%, 250=75.27%, 500=18.75%, 750=0.08% cpu : usr=0.23%, sys=1.88%, ctx=4572, majf=0, minf=13 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1244,1316,0,0 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: Mon Aug 10 20:18:38 2026 read: IOPS=38, BW=152KiB/s (156kB/s)(4984KiB/32757msec) slat (usec): min=1983, max=82834, avg=14269.11, stdev=9162.83 clat (msec): min=59, max=490, avg=194.07, stdev=72.30 lat (msec): min=64, max=513, avg=208.35, stdev=76.36 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 94], 10.00th=[ 108], 20.00th=[ 133], | 30.00th=[ 153], 40.00th=[ 169], 50.00th=[ 186], 60.00th=[ 201], | 70.00th=[ 220], 80.00th=[ 245], 90.00th=[ 296], 95.00th=[ 330], | 99.00th=[ 426], 99.50th=[ 435], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 23, max= 351, per=24.82%, avg=151.40, stdev=60.52, samples=65 iops : min= 5, max= 87, avg=37.35, stdev=15.16, samples=65 write: IOPS=40, BW=160KiB/s (164kB/s)(5256KiB/32757msec); 0 zone resets slat (usec): min=42, max=10105, avg=263.20, stdev=651.68 clat (msec): min=44, max=471, avg=197.94, stdev=68.37 lat (msec): min=45, max=475, avg=198.21, stdev=68.43 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 99], 10.00th=[ 110], 20.00th=[ 140], | 30.00th=[ 163], 40.00th=[ 178], 50.00th=[ 192], 60.00th=[ 207], | 70.00th=[ 224], 80.00th=[ 247], 90.00th=[ 288], 95.00th=[ 330], | 99.00th=[ 397], 99.50th=[ 430], 99.90th=[ 468], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 46, max= 328, per=25.06%, avg=159.11, stdev=59.01, samples=65 iops : min= 11, max= 82, avg=39.28, stdev=14.80, samples=65 lat (msec) : 50=0.04%, 100=6.48%, 250=74.53%, 500=18.95% cpu : usr=0.20%, sys=1.66%, ctx=4717, majf=0, minf=12 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1246,1314,0,0 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=179542: Mon Aug 10 20:18:38 2026 read: IOPS=38, BW=154KiB/s (158kB/s)(5060KiB/32854msec) slat (usec): min=2153, max=97695, avg=14288.22, stdev=9341.68 clat (msec): min=61, max=511, avg=195.42, stdev=72.10 lat (msec): min=64, max=563, avg=209.72, stdev=76.11 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 94], 10.00th=[ 112], 20.00th=[ 136], | 30.00th=[ 155], 40.00th=[ 171], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 222], 80.00th=[ 247], 90.00th=[ 296], 95.00th=[ 334], | 99.00th=[ 430], 99.50th=[ 443], 99.90th=[ 489], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 23, max= 279, per=25.14%, avg=153.37, stdev=54.97, samples=65 iops : min= 5, max= 69, avg=37.85, stdev=13.76, samples=65 write: IOPS=39, BW=158KiB/s (161kB/s)(5180KiB/32854msec); 0 zone resets slat (usec): min=40, max=17155, avg=244.09, stdev=688.88 clat (msec): min=49, max=495, avg=197.44, stdev=69.77 lat (msec): min=50, max=495, avg=197.68, stdev=69.79 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 97], 10.00th=[ 111], 20.00th=[ 138], | 30.00th=[ 157], 40.00th=[ 178], 50.00th=[ 197], 60.00th=[ 209], | 70.00th=[ 224], 80.00th=[ 245], 90.00th=[ 284], 95.00th=[ 326], | 99.00th=[ 426], 99.50th=[ 447], 99.90th=[ 468], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 54, max= 335, per=24.64%, avg=156.46, stdev=64.73, samples=65 iops : min= 13, max= 83, avg=38.62, stdev=16.25, samples=65 lat (msec) : 50=0.04%, 100=6.09%, 250=75.82%, 500=18.01%, 750=0.04% cpu : usr=0.24%, sys=1.87%, ctx=4487, majf=0, minf=12 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1265,1295,0,0 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=611KiB/s (625kB/s), 152KiB/s-154KiB/s (156kB/s-158kB/s), io=19.6MiB (20.5MB), run=32633-32854msec WRITE: bw=636KiB/s (651kB/s), 158KiB/s-161KiB/s (161kB/s-165kB/s), io=20.4MiB (21.4MB), run=32633-32854msec AIO with large block size 40M rand-rw: (g=0): rw=randrw, bs=(R) 40.0MiB-40.0MiB, (W) 40.0MiB-40.0MiB, (T) 40.0MiB-40.0MiB, ioengine=libaio, iodepth=16 fio-3.19 Starting 1 process rand-rw: (groupid=0, jobs=1): err= 0: pid=179552: Mon Aug 10 20:18:51 2026 read: IOPS=1, BW=72.9MiB/s (76.4MB/s)(40.0MiB/549msec) slat (nsec): min=29120k, max=29120k, avg=29119732.00, stdev= 0.00 clat (nsec): min=486222k, max=486222k, avg=486222181.00, stdev= 0.00 lat (nsec): min=515347k, max=515347k, avg=515346556.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 485], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.37%, ctx=6, 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=1,0,0,0 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=72.9MiB/s (76.4MB/s), 72.9MiB/s-72.9MiB/s (76.4MB/s-76.4MB/s), io=40.0MiB (41.9MB), run=549-549msec debug=trace inode super iotrace malloc cache info ioctl neterror net warning buffs other dentry nettrace page dlmtrace error emerg ha rpctrace vfstrace reada mmap config console quota sec lfsck hsm snapshot layout