== sanity test 398c: run fio to test AIO ================= 00:52:18 (1786942338) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.602515 s, 69.6 MB/s osc.lustre-OST0000-osc-ffff8bf782d97800.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=157777: Mon Aug 17 00:54:49 2026 write: IOPS=18, BW=72.8KiB/s (74.6kB/s)(10.0MiB/140605msec); 0 zone resets slat (usec): min=37, max=17965, avg=333.72, stdev=871.33 clat (msec): min=188, max=1717, avg=877.49, stdev=226.64 lat (msec): min=188, max=1717, avg=877.82, stdev=226.60 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 550], 10.00th=[ 625], 20.00th=[ 701], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 978], 80.00th=[ 1053], 90.00th=[ 1183], 95.00th=[ 1267], | 99.00th=[ 1485], 99.50th=[ 1620], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1720] bw ( KiB/s): min= 7, max= 166, per=24.81%, avg=72.20, stdev=30.79, samples=279 iops : min= 1, max= 41, avg=17.56, stdev= 7.69, samples=279 lat (msec) : 250=0.62%, 500=3.20%, 750=24.88%, 1000=44.57%, 2000=26.72% cpu : usr=0.05%, sys=0.38%, ctx=2197, 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=157778: Mon Aug 17 00:54:49 2026 write: IOPS=18, BW=72.9KiB/s (74.7kB/s)(10.0MiB/140411msec); 0 zone resets slat (usec): min=36, max=16178, avg=336.01, stdev=946.89 clat (msec): min=139, max=1720, avg=876.92, stdev=224.09 lat (msec): min=139, max=1720, avg=877.26, stdev=224.12 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 550], 10.00th=[ 625], 20.00th=[ 709], | 30.00th=[ 768], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1301], | 99.00th=[ 1469], 99.50th=[ 1586], 99.90th=[ 1703], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 15, max= 220, per=25.54%, avg=74.32, stdev=30.54, samples=271 iops : min= 3, max= 55, avg=18.10, stdev= 7.66, samples=271 lat (msec) : 250=0.62%, 500=2.73%, 750=23.71%, 1000=47.23%, 2000=25.70% cpu : usr=0.05%, sys=0.36%, ctx=1849, majf=0, minf=11 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=157779: Mon Aug 17 00:54:49 2026 write: IOPS=18, BW=72.8KiB/s (74.6kB/s)(10.0MiB/140601msec); 0 zone resets slat (usec): min=36, max=14111, avg=293.97, stdev=699.68 clat (msec): min=136, max=1704, avg=877.54, stdev=227.60 lat (msec): min=137, max=1704, avg=877.84, stdev=227.60 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 542], 10.00th=[ 625], 20.00th=[ 701], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1502], 99.50th=[ 1603], 99.90th=[ 1670], 99.95th=[ 1687], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 143, per=25.36%, avg=73.79, stdev=33.69, samples=272 iops : min= 1, max= 35, avg=17.96, stdev= 8.41, samples=272 lat (msec) : 250=0.23%, 500=3.55%, 750=25.16%, 1000=45.47%, 2000=25.59% cpu : usr=0.06%, sys=0.37%, ctx=1913, 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=157780: Mon Aug 17 00:54:49 2026 write: IOPS=18, BW=72.9KiB/s (74.6kB/s)(10.0MiB/140530msec); 0 zone resets slat (usec): min=37, max=13505, avg=302.80, stdev=749.17 clat (msec): min=77, max=1739, avg=877.04, stdev=227.58 lat (msec): min=88, max=1740, avg=877.35, stdev=227.53 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 535], 10.00th=[ 625], 20.00th=[ 701], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1485], 99.50th=[ 1552], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1737] bw ( KiB/s): min= 7, max= 230, per=24.99%, avg=72.73, stdev=33.45, samples=277 iops : min= 1, max= 57, avg=17.69, stdev= 8.37, samples=277 lat (msec) : 100=0.04%, 250=0.62%, 500=3.36%, 750=25.47%, 1000=44.45% lat (msec) : 2000=26.05% cpu : usr=0.05%, sys=0.36%, ctx=1946, 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 Run status group 0 (all jobs): WRITE: bw=291KiB/s (298kB/s), 72.8KiB/s-72.9KiB/s (74.6kB/s-74.7kB/s), io=40.0MiB (41.9MB), run=140411-140605msec 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=157810: Mon Aug 17 00:56:21 2026 read: IOPS=14, BW=58.8KiB/s (60.2kB/s)(5048KiB/85841msec) slat (usec): min=54, max=62657, avg=12960.38, stdev=6900.39 clat (msec): min=11, max=697, avg=333.64, stdev=87.69 lat (msec): min=23, max=719, avg=346.61, stdev=88.80 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 203], 10.00th=[ 234], 20.00th=[ 268], | 30.00th=[ 296], 40.00th=[ 313], 50.00th=[ 334], 60.00th=[ 351], | 70.00th=[ 376], 80.00th=[ 401], 90.00th=[ 439], 95.00th=[ 477], | 99.00th=[ 567], 99.50th=[ 592], 99.90th=[ 634], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 120, per=25.13%, avg=58.31, stdev=24.47, samples=170 iops : min= 1, max= 30, avg=14.10, stdev= 6.19, samples=170 write: IOPS=15, BW=60.5KiB/s (61.9kB/s)(5192KiB/85841msec); 0 zone resets slat (usec): min=42, max=17154, avg=471.81, stdev=1279.55 clat (msec): min=138, max=1585, avg=720.16, stdev=193.72 lat (msec): min=138, max=1586, avg=720.64, stdev=193.72 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 443], 10.00th=[ 489], 20.00th=[ 567], | 30.00th=[ 625], 40.00th=[ 667], 50.00th=[ 709], 60.00th=[ 751], | 70.00th=[ 802], 80.00th=[ 869], 90.00th=[ 978], 95.00th=[ 1053], | 99.00th=[ 1250], 99.50th=[ 1368], 99.90th=[ 1569], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 8, max= 111, per=24.70%, avg=59.78, stdev=20.64, samples=170 iops : min= 2, max= 27, avg=14.46, stdev= 5.17, samples=170 lat (msec) : 20=0.16%, 50=0.31%, 100=0.35%, 250=6.80%, 500=46.41% lat (msec) : 750=25.62%, 1000=16.29%, 2000=4.06% cpu : usr=0.13%, sys=1.05%, ctx=4938, 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=157811: Mon Aug 17 00:56:21 2026 read: IOPS=14, BW=57.7KiB/s (59.1kB/s)(4976KiB/86277msec) slat (usec): min=2625, max=77233, avg=12966.82, stdev=7272.33 clat (msec): min=10, max=667, avg=335.36, stdev=83.32 lat (msec): min=23, max=684, avg=348.34, stdev=84.10 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 209], 10.00th=[ 239], 20.00th=[ 271], | 30.00th=[ 292], 40.00th=[ 317], 50.00th=[ 334], 60.00th=[ 351], | 70.00th=[ 376], 80.00th=[ 401], 90.00th=[ 430], 95.00th=[ 468], | 99.00th=[ 575], 99.50th=[ 617], 99.90th=[ 659], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 144, per=24.59%, avg=57.04, stdev=24.66, samples=171 iops : min= 1, max= 36, avg=13.78, stdev= 6.22, samples=171 write: IOPS=15, BW=61.0KiB/s (62.5kB/s)(5264KiB/86277msec); 0 zone resets slat (usec): min=42, max=14856, avg=452.29, stdev=1035.60 clat (msec): min=241, max=1662, avg=717.41, stdev=198.19 lat (msec): min=241, max=1663, avg=717.86, stdev=198.20 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 422], 10.00th=[ 481], 20.00th=[ 558], | 30.00th=[ 617], 40.00th=[ 659], 50.00th=[ 701], 60.00th=[ 743], | 70.00th=[ 802], 80.00th=[ 869], 90.00th=[ 969], 95.00th=[ 1053], | 99.00th=[ 1368], 99.50th=[ 1469], 99.90th=[ 1603], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7, max= 144, per=25.00%, avg=60.50, stdev=22.20, samples=171 iops : min= 1, max= 36, avg=14.64, stdev= 5.62, samples=171 lat (msec) : 20=0.08%, 50=0.04%, 100=0.27%, 250=6.37%, 500=46.84% lat (msec) : 750=26.37%, 1000=15.98%, 2000=4.06% cpu : usr=0.15%, sys=1.05%, ctx=5010, majf=0, minf=14 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=157812: Mon Aug 17 00:56:21 2026 read: IOPS=14, BW=57.8KiB/s (59.2kB/s)(4984KiB/86275msec) slat (usec): min=2916, max=46898, avg=12917.89, stdev=6694.81 clat (msec): min=17, max=698, avg=340.73, stdev=84.97 lat (msec): min=34, max=716, avg=353.66, stdev=85.75 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 220], 10.00th=[ 241], 20.00th=[ 271], | 30.00th=[ 296], 40.00th=[ 317], 50.00th=[ 334], 60.00th=[ 355], | 70.00th=[ 380], 80.00th=[ 401], 90.00th=[ 443], 95.00th=[ 493], | 99.00th=[ 592], 99.50th=[ 625], 99.90th=[ 693], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 148, per=24.69%, avg=57.29, stdev=24.16, samples=171 iops : min= 1, max= 37, avg=13.85, stdev= 6.10, samples=171 write: IOPS=15, BW=60.9KiB/s (62.4kB/s)(5256KiB/86275msec); 0 zone resets slat (usec): min=41, max=11279, avg=436.10, stdev=953.70 clat (msec): min=79, max=1654, avg=712.88, stdev=194.36 lat (msec): min=80, max=1655, avg=713.32, stdev=194.36 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 422], 10.00th=[ 485], 20.00th=[ 567], | 30.00th=[ 617], 40.00th=[ 659], 50.00th=[ 701], 60.00th=[ 743], | 70.00th=[ 802], 80.00th=[ 852], 90.00th=[ 961], 95.00th=[ 1045], | 99.00th=[ 1267], 99.50th=[ 1469], 99.90th=[ 1586], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 15, max= 160, per=24.90%, avg=60.25, stdev=22.35, samples=171 iops : min= 3, max= 40, avg=14.58, stdev= 5.63, samples=171 lat (msec) : 20=0.04%, 50=0.08%, 100=0.20%, 250=6.41%, 500=45.98% lat (msec) : 750=27.93%, 1000=15.62%, 2000=3.75% cpu : usr=0.14%, sys=1.05%, ctx=5023, 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=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=157813: Mon Aug 17 00:56:21 2026 read: IOPS=14, BW=58.7KiB/s (60.1kB/s)(5060KiB/86234msec) slat (usec): min=2621, max=47354, avg=13013.90, stdev=6615.58 clat (msec): min=26, max=675, avg=336.94, stdev=84.99 lat (msec): min=30, max=688, avg=349.96, stdev=86.10 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 215], 10.00th=[ 239], 20.00th=[ 268], | 30.00th=[ 292], 40.00th=[ 313], 50.00th=[ 334], 60.00th=[ 355], | 70.00th=[ 376], 80.00th=[ 405], 90.00th=[ 443], 95.00th=[ 485], | 99.00th=[ 567], 99.50th=[ 634], 99.90th=[ 642], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 120, per=25.16%, avg=58.38, stdev=24.62, samples=170 iops : min= 1, max= 30, avg=14.12, stdev= 6.27, samples=170 write: IOPS=15, BW=60.1KiB/s (61.5kB/s)(5180KiB/86234msec); 0 zone resets slat (usec): min=41, max=15645, avg=444.96, stdev=1041.86 clat (msec): min=239, max=1580, avg=720.83, stdev=190.52 lat (msec): min=239, max=1580, avg=721.27, stdev=190.44 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 443], 10.00th=[ 489], 20.00th=[ 567], | 30.00th=[ 625], 40.00th=[ 667], 50.00th=[ 701], 60.00th=[ 751], | 70.00th=[ 802], 80.00th=[ 860], 90.00th=[ 969], 95.00th=[ 1045], | 99.00th=[ 1267], 99.50th=[ 1452], 99.90th=[ 1519], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 8, max= 144, per=24.60%, avg=59.53, stdev=21.46, samples=171 iops : min= 2, max= 36, avg=14.40, stdev= 5.36, samples=171 lat (msec) : 50=0.08%, 100=0.20%, 250=6.91%, 500=46.45%, 750=25.98% lat (msec) : 1000=16.52%, 2000=3.87% cpu : usr=0.13%, sys=1.00%, ctx=4927, 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=233KiB/s (238kB/s), 57.7KiB/s-58.8KiB/s (59.1kB/s-60.2kB/s), io=19.6MiB (20.5MB), run=85841-86277msec WRITE: bw=242KiB/s (248kB/s), 60.1KiB/s-61.0KiB/s (61.5kB/s-62.5kB/s), io=20.4MiB (21.4MB), run=85841-86277msec 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=157830: Mon Aug 17 00:56:30 2026 read: IOPS=2, BW=81.3MiB/s (85.2MB/s)(40.0MiB/492msec) slat (nsec): min=52018k, max=52018k, avg=52018179.00, stdev= 0.00 clat (nsec): min=416915k, max=416915k, avg=416914865.00, stdev= 0.00 lat (nsec): min=468939k, max=468939k, avg=468938628.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] lat (msec) : 500=100.00% cpu : usr=1.02%, sys=5.09%, ctx=46, 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=81.3MiB/s (85.2MB/s), 81.3MiB/s-81.3MiB/s (85.2MB/s-85.2MB/s), io=40.0MiB (41.9MB), run=492-492msec 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