== sanity test 398c: run fio to test AIO ================= 04:09:55 (1787472595) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.478791 s, 87.6 MB/s osc.lustre-OST0000-osc-ffff9be2119ef800.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=179451: Sun Aug 23 04:10:29 2026 write: IOPS=107, BW=429KiB/s (440kB/s)(10.0MiB/23849msec); 0 zone resets slat (usec): min=47, max=19178, avg=253.98, stdev=689.87 clat (msec): min=24, max=254, avg=148.21, stdev=29.03 lat (msec): min=25, max=255, avg=148.46, stdev=29.01 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 107], 10.00th=[ 115], 20.00th=[ 126], | 30.00th=[ 131], 40.00th=[ 138], 50.00th=[ 144], 60.00th=[ 153], | 70.00th=[ 161], 80.00th=[ 174], 90.00th=[ 186], 95.00th=[ 199], | 99.00th=[ 222], 99.50th=[ 234], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 288, max= 606, per=24.89%, avg=427.38, stdev=64.94, samples=47 iops : min= 72, max= 151, avg=106.45, stdev=16.25, samples=47 lat (msec) : 50=0.12%, 100=2.73%, 250=96.99%, 500=0.16% cpu : usr=0.11%, sys=1.38%, ctx=2502, 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=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=179452: Sun Aug 23 04:10:29 2026 write: IOPS=107, BW=430KiB/s (440kB/s)(10.0MiB/23821msec); 0 zone resets slat (usec): min=48, max=9151, avg=245.16, stdev=568.63 clat (msec): min=19, max=331, avg=148.11, stdev=31.36 lat (msec): min=20, max=331, avg=148.36, stdev=31.35 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 100], 10.00th=[ 115], 20.00th=[ 124], | 30.00th=[ 129], 40.00th=[ 138], 50.00th=[ 144], 60.00th=[ 153], | 70.00th=[ 165], 80.00th=[ 178], 90.00th=[ 186], 95.00th=[ 199], | 99.00th=[ 236], 99.50th=[ 245], 99.90th=[ 317], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 342, max= 518, per=25.02%, avg=429.55, stdev=54.07, samples=47 iops : min= 85, max= 129, avg=107.00, stdev=13.48, samples=47 lat (msec) : 20=0.04%, 50=0.12%, 100=4.84%, 250=94.69%, 500=0.31% cpu : usr=0.20%, sys=1.27%, ctx=2508, 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=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=179453: Sun Aug 23 04:10:29 2026 write: IOPS=107, BW=430KiB/s (440kB/s)(10.0MiB/23822msec); 0 zone resets slat (usec): min=50, max=12561, avg=286.61, stdev=708.10 clat (msec): min=29, max=278, avg=148.04, stdev=30.88 lat (msec): min=30, max=278, avg=148.33, stdev=30.88 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 106], 10.00th=[ 114], 20.00th=[ 124], | 30.00th=[ 130], 40.00th=[ 136], 50.00th=[ 144], 60.00th=[ 153], | 70.00th=[ 165], 80.00th=[ 178], 90.00th=[ 188], 95.00th=[ 199], | 99.00th=[ 239], 99.50th=[ 243], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 343, max= 520, per=24.96%, avg=428.49, stdev=47.71, samples=47 iops : min= 85, max= 130, avg=106.74, stdev=11.89, samples=47 lat (msec) : 50=0.08%, 100=3.05%, 250=96.56%, 500=0.31% cpu : usr=0.24%, sys=1.35%, ctx=2705, 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=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=179454: Sun Aug 23 04:10:29 2026 write: IOPS=107, BW=431KiB/s (441kB/s)(10.0MiB/23775msec); 0 zone resets slat (usec): min=54, max=18669, avg=264.71, stdev=667.60 clat (msec): min=23, max=338, avg=148.13, stdev=30.18 lat (msec): min=23, max=338, avg=148.40, stdev=30.17 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 106], 10.00th=[ 116], 20.00th=[ 124], | 30.00th=[ 130], 40.00th=[ 138], 50.00th=[ 144], 60.00th=[ 153], | 70.00th=[ 163], 80.00th=[ 174], 90.00th=[ 186], 95.00th=[ 199], | 99.00th=[ 245], 99.50th=[ 251], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 338] bw ( KiB/s): min= 310, max= 526, per=25.02%, avg=429.62, stdev=55.99, samples=47 iops : min= 77, max= 131, avg=107.02, stdev=13.99, samples=47 lat (msec) : 50=0.16%, 100=3.05%, 250=96.13%, 500=0.66% cpu : usr=0.20%, sys=1.24%, ctx=2812, 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=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=1717KiB/s (1759kB/s), 429KiB/s-431KiB/s (440kB/s-441kB/s), io=40.0MiB (41.9MB), run=23775-23849msec 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=179467: Sun Aug 23 04:11:06 2026 read: IOPS=42, BW=172KiB/s (176kB/s)(5048KiB/29411msec) slat (usec): min=2451, max=56373, avg=12361.63, stdev=7167.37 clat (msec): min=36, max=363, avg=173.39, stdev=43.21 lat (msec): min=43, max=381, avg=185.76, stdev=44.94 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 113], 10.00th=[ 124], 20.00th=[ 140], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 190], 80.00th=[ 205], 90.00th=[ 234], 95.00th=[ 255], | 99.00th=[ 292], 99.50th=[ 300], 99.90th=[ 342], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 87, max= 285, per=25.07%, avg=170.95, stdev=41.11, samples=58 iops : min= 21, max= 71, avg=42.28, stdev=10.33, samples=58 write: IOPS=44, BW=177KiB/s (181kB/s)(5192KiB/29411msec); 0 zone resets slat (usec): min=56, max=11419, avg=275.79, stdev=690.00 clat (msec): min=30, max=426, avg=179.16, stdev=41.77 lat (msec): min=30, max=426, avg=179.44, stdev=41.77 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 123], 10.00th=[ 133], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 194], 80.00th=[ 211], 90.00th=[ 234], 95.00th=[ 255], | 99.00th=[ 300], 99.50th=[ 317], 99.90th=[ 363], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 95, max= 246, per=24.87%, avg=176.55, stdev=36.56, samples=58 iops : min= 23, max= 61, avg=43.69, stdev= 9.15, samples=58 lat (msec) : 50=0.08%, 100=1.72%, 250=92.19%, 500=6.02% cpu : usr=0.22%, sys=1.81%, ctx=4640, 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=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=179468: Sun Aug 23 04:11:06 2026 read: IOPS=42, BW=170KiB/s (174kB/s)(4976KiB/29305msec) slat (usec): min=2541, max=67772, avg=12741.08, stdev=7295.81 clat (msec): min=23, max=452, avg=175.24, stdev=45.94 lat (msec): min=32, max=465, avg=187.99, stdev=47.60 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 115], 10.00th=[ 125], 20.00th=[ 138], | 30.00th=[ 150], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 180], | 70.00th=[ 192], 80.00th=[ 209], 90.00th=[ 236], 95.00th=[ 262], | 99.00th=[ 300], 99.50th=[ 326], 99.90th=[ 443], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 99, max= 232, per=24.75%, avg=168.78, stdev=31.62, samples=58 iops : min= 24, max= 58, avg=41.72, stdev= 7.98, samples=58 write: IOPS=44, BW=180KiB/s (184kB/s)(5264KiB/29305msec); 0 zone resets slat (usec): min=55, max=12121, avg=275.34, stdev=705.56 clat (msec): min=91, max=452, avg=176.55, stdev=41.54 lat (msec): min=92, max=452, avg=176.83, stdev=41.53 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 118], 10.00th=[ 130], 20.00th=[ 142], | 30.00th=[ 153], 40.00th=[ 163], 50.00th=[ 174], 60.00th=[ 184], | 70.00th=[ 194], 80.00th=[ 209], 90.00th=[ 232], 95.00th=[ 253], | 99.00th=[ 288], 99.50th=[ 309], 99.90th=[ 397], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 87, max= 285, per=25.24%, avg=179.17, stdev=47.20, samples=58 iops : min= 21, max= 71, avg=44.34, stdev=11.87, samples=58 lat (msec) : 50=0.08%, 100=1.21%, 250=92.34%, 500=6.37% cpu : usr=0.23%, sys=1.98%, ctx=4759, 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=179469: Sun Aug 23 04:11:06 2026 read: IOPS=42, BW=169KiB/s (174kB/s)(4984KiB/29409msec) slat (usec): min=2707, max=56221, avg=12483.63, stdev=6876.89 clat (msec): min=33, max=359, avg=173.71, stdev=42.30 lat (msec): min=39, max=381, avg=186.20, stdev=43.80 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 114], 10.00th=[ 125], 20.00th=[ 140], | 30.00th=[ 150], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 180], | 70.00th=[ 192], 80.00th=[ 209], 90.00th=[ 232], 95.00th=[ 253], | 99.00th=[ 296], 99.50th=[ 305], 99.90th=[ 317], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 95, max= 272, per=24.87%, avg=169.62, stdev=39.39, samples=58 iops : min= 23, max= 68, avg=41.95, stdev= 9.92, samples=58 write: IOPS=44, BW=179KiB/s (183kB/s)(5256KiB/29409msec); 0 zone resets slat (usec): min=59, max=10523, avg=294.08, stdev=758.48 clat (msec): min=79, max=439, avg=179.15, stdev=42.13 lat (msec): min=80, max=439, avg=179.45, stdev=42.13 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 120], 10.00th=[ 130], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 197], 80.00th=[ 209], 90.00th=[ 230], 95.00th=[ 253], | 99.00th=[ 292], 99.50th=[ 326], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 103, max= 300, per=25.07%, avg=178.02, stdev=37.58, samples=58 iops : min= 25, max= 75, avg=44.05, stdev= 9.46, samples=58 lat (msec) : 50=0.04%, 100=1.29%, 250=93.20%, 500=5.47% cpu : usr=0.28%, sys=2.00%, ctx=4668, 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=179470: Sun Aug 23 04:11:06 2026 read: IOPS=43, BW=174KiB/s (178kB/s)(5060KiB/29116msec) slat (usec): min=67, max=66873, avg=12354.48, stdev=6970.31 clat (msec): min=57, max=355, avg=172.29, stdev=43.19 lat (msec): min=68, max=363, avg=184.65, stdev=44.94 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 114], 10.00th=[ 124], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 188], 80.00th=[ 203], 90.00th=[ 232], 95.00th=[ 257], | 99.00th=[ 292], 99.50th=[ 305], 99.90th=[ 342], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 95, max= 253, per=25.49%, avg=173.82, stdev=40.11, samples=57 iops : min= 23, max= 63, avg=43.00, stdev=10.08, samples=57 write: IOPS=44, BW=178KiB/s (182kB/s)(5180KiB/29116msec); 0 zone resets slat (usec): min=54, max=12779, avg=281.09, stdev=670.37 clat (msec): min=57, max=365, avg=178.27, stdev=40.53 lat (msec): min=70, max=365, avg=178.55, stdev=40.50 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 120], 10.00th=[ 131], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 186], | 70.00th=[ 197], 80.00th=[ 209], 90.00th=[ 228], 95.00th=[ 245], | 99.00th=[ 292], 99.50th=[ 334], 99.90th=[ 363], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 111, max= 264, per=25.03%, avg=177.68, stdev=34.93, samples=57 iops : min= 27, max= 66, avg=43.96, stdev= 8.79, samples=57 lat (msec) : 100=1.80%, 250=93.01%, 500=5.20% cpu : usr=0.24%, sys=1.97%, ctx=4633, 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=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=682KiB/s (699kB/s), 169KiB/s-174KiB/s (174kB/s-178kB/s), io=19.6MiB (20.5MB), run=29116-29411msec WRITE: bw=710KiB/s (727kB/s), 177KiB/s-180KiB/s (181kB/s-184kB/s), io=20.4MiB (21.4MB), run=29116-29411msec 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=179479: Sun Aug 23 04:11:18 2026 read: IOPS=1, BW=75.8MiB/s (79.4MB/s)(40.0MiB/528msec) slat (nsec): min=64505k, max=64505k, avg=64505221.00, stdev= 0.00 clat (nsec): min=449312k, max=449312k, avg=449311839.00, stdev= 0.00 lat (nsec): min=513821k, max=513821k, avg=513821303.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=1.14%, ctx=12, 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=1,0,0,0 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=75.8MiB/s (79.4MB/s), 75.8MiB/s-75.8MiB/s (79.4MB/s-79.4MB/s), io=40.0MiB (41.9MB), run=528-528msec 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