== sanity test 398c: run fio to test AIO ================= 08:48:12 (1787834892) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.484538 s, 86.6 MB/s osc.lustre-OST0000-osc-ffff92379108f800.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=179017: Thu Aug 27 08:48:49 2026 write: IOPS=94, BW=379KiB/s (388kB/s)(10.0MiB/27047msec); 0 zone resets slat (usec): min=22, max=19598, avg=168.08, stdev=727.62 clat (msec): min=30, max=497, avg=168.69, stdev=46.92 lat (msec): min=30, max=497, avg=168.86, stdev=46.92 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 108], 10.00th=[ 115], 20.00th=[ 131], | 30.00th=[ 142], 40.00th=[ 150], 50.00th=[ 161], 60.00th=[ 174], | 70.00th=[ 190], 80.00th=[ 201], 90.00th=[ 228], 95.00th=[ 259], | 99.00th=[ 300], 99.50th=[ 309], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 143, max= 638, per=25.16%, avg=379.87, stdev=96.95, samples=53 iops : min= 35, max= 159, avg=94.60, stdev=24.26, samples=53 lat (msec) : 50=0.04%, 100=2.93%, 250=90.78%, 500=6.25% cpu : usr=0.22%, sys=0.86%, ctx=2130, majf=0, minf=10 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=179018: Thu Aug 27 08:48:49 2026 write: IOPS=94, BW=378KiB/s (387kB/s)(10.0MiB/27120msec); 0 zone resets slat (usec): min=23, max=11521, avg=179.11, stdev=559.08 clat (msec): min=21, max=318, avg=168.44, stdev=45.16 lat (msec): min=25, max=318, avg=168.62, stdev=45.16 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 107], 10.00th=[ 120], 20.00th=[ 132], | 30.00th=[ 142], 40.00th=[ 150], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 188], 80.00th=[ 203], 90.00th=[ 226], 95.00th=[ 259], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 313], 99.95th=[ 317], | 99.99th=[ 321] bw ( KiB/s): min= 215, max= 590, per=25.09%, avg=378.87, stdev=85.76, samples=53 iops : min= 53, max= 147, avg=94.36, stdev=21.50, samples=53 lat (msec) : 50=0.12%, 100=3.16%, 250=90.55%, 500=6.17% cpu : usr=0.17%, sys=0.90%, ctx=2686, 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=179019: Thu Aug 27 08:48:49 2026 write: IOPS=94, BW=378KiB/s (388kB/s)(10.0MiB/27059msec); 0 zone resets slat (usec): min=21, max=14774, avg=187.25, stdev=728.28 clat (msec): min=28, max=318, avg=168.31, stdev=45.57 lat (msec): min=28, max=318, avg=168.49, stdev=45.56 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 106], 10.00th=[ 116], 20.00th=[ 131], | 30.00th=[ 144], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 190], 80.00th=[ 203], 90.00th=[ 224], 95.00th=[ 259], | 99.00th=[ 296], 99.50th=[ 300], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 207, max= 613, per=25.03%, avg=377.96, stdev=83.87, samples=53 iops : min= 51, max= 153, avg=94.13, stdev=20.99, samples=53 lat (msec) : 50=0.43%, 100=3.05%, 250=90.62%, 500=5.90% cpu : usr=0.19%, sys=0.97%, ctx=2587, majf=0, minf=10 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=179020: Thu Aug 27 08:48:49 2026 write: IOPS=94, BW=378KiB/s (387kB/s)(10.0MiB/27117msec); 0 zone resets slat (usec): min=22, max=20455, avg=152.07, stdev=769.34 clat (msec): min=33, max=328, avg=168.61, stdev=44.52 lat (msec): min=33, max=328, avg=168.76, stdev=44.52 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 111], 10.00th=[ 117], 20.00th=[ 129], | 30.00th=[ 142], 40.00th=[ 153], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 190], 80.00th=[ 203], 90.00th=[ 224], 95.00th=[ 259], | 99.00th=[ 292], 99.50th=[ 317], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 144, max= 613, per=24.93%, avg=376.49, stdev=90.43, samples=53 iops : min= 36, max= 153, avg=93.77, stdev=22.64, samples=53 lat (msec) : 50=0.20%, 100=2.27%, 250=91.88%, 500=5.66% cpu : usr=0.08%, sys=0.81%, ctx=1378, majf=0, minf=10 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=1510KiB/s (1547kB/s), 378KiB/s-379KiB/s (387kB/s-388kB/s), io=40.0MiB (41.9MB), run=27047-27120msec 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=179035: Thu Aug 27 08:49:27 2026 read: IOPS=44, BW=177KiB/s (181kB/s)(5048KiB/28570msec) slat (usec): min=53, max=61273, avg=12343.91, stdev=7286.92 clat (msec): min=44, max=412, avg=167.57, stdev=47.97 lat (msec): min=49, max=419, avg=179.92, stdev=50.00 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 93], 10.00th=[ 106], 20.00th=[ 126], | 30.00th=[ 140], 40.00th=[ 155], 50.00th=[ 167], 60.00th=[ 180], | 70.00th=[ 192], 80.00th=[ 207], 90.00th=[ 228], 95.00th=[ 249], | 99.00th=[ 296], 99.50th=[ 300], 99.90th=[ 393], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 95, max= 352, per=25.42%, avg=176.93, stdev=50.43, samples=56 iops : min= 23, max= 88, avg=43.82, stdev=12.66, samples=56 write: IOPS=45, BW=182KiB/s (186kB/s)(5192KiB/28570msec); 0 zone resets slat (usec): min=26, max=5652, avg=174.55, stdev=380.41 clat (msec): min=30, max=431, avg=176.48, stdev=45.25 lat (msec): min=30, max=431, avg=176.65, stdev=45.26 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 106], 10.00th=[ 117], 20.00th=[ 136], | 30.00th=[ 153], 40.00th=[ 165], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 215], 90.00th=[ 232], 95.00th=[ 247], | 99.00th=[ 288], 99.50th=[ 296], 99.90th=[ 414], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 87, max= 280, per=25.16%, avg=182.39, stdev=40.76, samples=56 iops : min= 21, max= 70, avg=45.16, stdev=10.25, samples=56 lat (msec) : 50=0.20%, 100=5.27%, 250=89.92%, 500=4.61% cpu : usr=0.29%, sys=1.82%, ctx=4482, 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=179036: Thu Aug 27 08:49:27 2026 read: IOPS=43, BW=173KiB/s (177kB/s)(4976KiB/28725msec) slat (usec): min=2268, max=56524, avg=12563.65, stdev=7176.08 clat (msec): min=12, max=334, avg=168.16, stdev=46.93 lat (msec): min=21, max=354, avg=180.73, stdev=49.51 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 94], 10.00th=[ 108], 20.00th=[ 126], | 30.00th=[ 142], 40.00th=[ 155], 50.00th=[ 169], 60.00th=[ 180], | 70.00th=[ 192], 80.00th=[ 207], 90.00th=[ 228], 95.00th=[ 247], | 99.00th=[ 288], 99.50th=[ 296], 99.90th=[ 330], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 67, max= 288, per=24.74%, avg=172.19, stdev=52.08, samples=57 iops : min= 16, max= 72, avg=42.61, stdev=13.12, samples=57 write: IOPS=45, BW=183KiB/s (188kB/s)(5264KiB/28725msec); 0 zone resets slat (usec): min=25, max=8079, avg=184.94, stdev=492.93 clat (msec): min=74, max=360, avg=175.72, stdev=45.43 lat (msec): min=74, max=360, avg=175.90, stdev=45.42 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 103], 10.00th=[ 112], 20.00th=[ 136], | 30.00th=[ 153], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 188], | 70.00th=[ 199], 80.00th=[ 211], 90.00th=[ 234], 95.00th=[ 251], | 99.00th=[ 279], 99.50th=[ 309], 99.90th=[ 351], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 103, max= 328, per=25.18%, avg=182.53, stdev=48.27, samples=57 iops : min= 25, max= 82, avg=45.23, stdev=12.11, samples=57 lat (msec) : 20=0.08%, 100=5.35%, 250=89.73%, 500=4.84% cpu : usr=0.24%, sys=1.71%, ctx=4228, 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=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=179037: Thu Aug 27 08:49:27 2026 read: IOPS=43, BW=173KiB/s (177kB/s)(4984KiB/28809msec) slat (usec): min=2393, max=59634, avg=12459.23, stdev=6907.08 clat (msec): min=19, max=327, avg=169.47, stdev=45.03 lat (msec): min=37, max=362, avg=181.94, stdev=47.04 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 94], 10.00th=[ 109], 20.00th=[ 130], | 30.00th=[ 144], 40.00th=[ 159], 50.00th=[ 171], 60.00th=[ 182], | 70.00th=[ 194], 80.00th=[ 207], 90.00th=[ 228], 95.00th=[ 245], | 99.00th=[ 275], 99.50th=[ 288], 99.90th=[ 313], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 52, max= 304, per=24.77%, avg=172.42, stdev=45.74, samples=57 iops : min= 13, max= 76, avg=42.68, stdev=11.47, samples=57 write: IOPS=45, BW=182KiB/s (187kB/s)(5256KiB/28809msec); 0 zone resets slat (usec): min=26, max=10149, avg=195.09, stdev=514.38 clat (msec): min=32, max=311, avg=174.70, stdev=43.89 lat (msec): min=33, max=311, avg=174.90, stdev=43.88 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 104], 10.00th=[ 114], 20.00th=[ 134], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 199], 80.00th=[ 213], 90.00th=[ 230], 95.00th=[ 247], | 99.00th=[ 275], 99.50th=[ 292], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 67, max= 320, per=25.00%, avg=181.25, stdev=51.55, samples=57 iops : min= 16, max= 80, avg=44.89, stdev=12.96, samples=57 lat (msec) : 20=0.04%, 50=0.08%, 100=4.92%, 250=91.17%, 500=3.79% cpu : usr=0.29%, sys=1.71%, ctx=4670, 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=179038: Thu Aug 27 08:49:27 2026 read: IOPS=43, BW=176KiB/s (180kB/s)(5060KiB/28808msec) slat (usec): min=2452, max=52419, avg=12773.62, stdev=7100.11 clat (msec): min=23, max=341, avg=169.13, stdev=46.05 lat (msec): min=34, max=350, avg=181.91, stdev=48.43 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 92], 10.00th=[ 107], 20.00th=[ 127], | 30.00th=[ 144], 40.00th=[ 159], 50.00th=[ 171], 60.00th=[ 184], | 70.00th=[ 194], 80.00th=[ 207], 90.00th=[ 228], 95.00th=[ 245], | 99.00th=[ 275], 99.50th=[ 284], 99.90th=[ 334], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 53, max= 360, per=25.14%, avg=174.96, stdev=48.92, samples=57 iops : min= 13, max= 90, avg=43.33, stdev=12.27, samples=57 write: IOPS=44, BW=180KiB/s (184kB/s)(5180KiB/28808msec); 0 zone resets slat (usec): min=24, max=22150, avg=208.44, stdev=792.44 clat (msec): min=30, max=312, avg=174.62, stdev=44.07 lat (msec): min=31, max=312, avg=174.83, stdev=44.06 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 103], 10.00th=[ 115], 20.00th=[ 133], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 176], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 213], 90.00th=[ 230], 95.00th=[ 245], | 99.00th=[ 271], 99.50th=[ 279], 99.90th=[ 309], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 83, max= 280, per=24.58%, avg=178.23, stdev=46.17, samples=57 iops : min= 20, max= 70, avg=44.12, stdev=11.59, samples=57 lat (msec) : 50=0.12%, 100=5.90%, 250=90.16%, 500=3.83% cpu : usr=0.31%, sys=1.78%, ctx=4146, 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=697KiB/s (713kB/s), 173KiB/s-177KiB/s (177kB/s-181kB/s), io=19.6MiB (20.5MB), run=28570-28809msec WRITE: bw=725KiB/s (743kB/s), 180KiB/s-183KiB/s (184kB/s-188kB/s), io=20.4MiB (21.4MB), run=28570-28809msec 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=179047: Thu Aug 27 08:49:37 2026 read: IOPS=2, BW=91.7MiB/s (96.2MB/s)(40.0MiB/436msec) slat (nsec): min=34367k, max=34367k, avg=34366994.00, stdev= 0.00 clat (nsec): min=385312k, max=385312k, avg=385311787.00, stdev= 0.00 lat (nsec): min=419684k, max=419684k, avg=419684120.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.07%, ctx=6, 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=91.7MiB/s (96.2MB/s), 91.7MiB/s-91.7MiB/s (96.2MB/s-96.2MB/s), io=40.0MiB (41.9MB), run=436-436msec 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