== sanity test 398c: run fio to test AIO ================= 00:00:02 (1788753602) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.789485 s, 53.1 MB/s osc.lustre-OST0000-osc-ffff9865b2d66000.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=180708: Mon Sep 7 00:00:42 2026 write: IOPS=101, BW=407KiB/s (417kB/s)(10.0MiB/25135msec); 0 zone resets slat (usec): min=22, max=12357, avg=166.32, stdev=662.88 clat (msec): min=33, max=363, avg=155.68, stdev=34.34 lat (msec): min=33, max=363, avg=155.85, stdev=34.35 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 114], 10.00th=[ 121], 20.00th=[ 131], | 30.00th=[ 136], 40.00th=[ 142], 50.00th=[ 148], 60.00th=[ 155], | 70.00th=[ 165], 80.00th=[ 182], 90.00th=[ 205], 95.00th=[ 220], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 363] bw ( KiB/s): min= 245, max= 515, per=25.06%, avg=407.47, stdev=75.42, samples=49 iops : min= 61, max= 128, avg=101.51, stdev=18.85, samples=49 lat (msec) : 50=0.08%, 100=0.78%, 250=97.38%, 500=1.76% cpu : usr=0.18%, sys=0.87%, ctx=1119, 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=180709: Mon Sep 7 00:00:42 2026 write: IOPS=101, BW=407KiB/s (417kB/s)(10.0MiB/25174msec); 0 zone resets slat (usec): min=22, max=25509, avg=200.75, stdev=839.14 clat (msec): min=20, max=302, avg=155.74, stdev=34.05 lat (msec): min=20, max=302, avg=155.94, stdev=34.06 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 116], 10.00th=[ 122], 20.00th=[ 131], | 30.00th=[ 138], 40.00th=[ 142], 50.00th=[ 148], 60.00th=[ 155], | 70.00th=[ 165], 80.00th=[ 176], 90.00th=[ 207], 95.00th=[ 222], | 99.00th=[ 262], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 305] bw ( KiB/s): min= 126, max= 547, per=25.00%, avg=406.49, stdev=82.14, samples=49 iops : min= 31, max= 136, avg=101.27, stdev=20.56, samples=49 lat (msec) : 50=0.23%, 100=0.70%, 250=97.15%, 500=1.91% cpu : usr=0.17%, sys=1.03%, ctx=1505, 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=180710: Mon Sep 7 00:00:42 2026 write: IOPS=102, BW=410KiB/s (420kB/s)(10.0MiB/24972msec); 0 zone resets slat (usec): min=24, max=14207, avg=235.62, stdev=874.96 clat (msec): min=25, max=303, avg=155.22, stdev=34.13 lat (msec): min=26, max=303, avg=155.46, stdev=34.13 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 113], 10.00th=[ 120], 20.00th=[ 130], | 30.00th=[ 136], 40.00th=[ 142], 50.00th=[ 150], 60.00th=[ 159], | 70.00th=[ 165], 80.00th=[ 180], 90.00th=[ 201], 95.00th=[ 220], | 99.00th=[ 266], 99.50th=[ 271], 99.90th=[ 288], 99.95th=[ 296], | 99.99th=[ 305] bw ( KiB/s): min= 253, max= 592, per=25.23%, avg=410.31, stdev=76.15, samples=49 iops : min= 63, max= 148, avg=102.27, stdev=19.06, samples=49 lat (msec) : 50=0.23%, 100=0.78%, 250=96.29%, 500=2.70% cpu : usr=0.25%, sys=1.28%, ctx=2328, 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=180711: Mon Sep 7 00:00:42 2026 write: IOPS=101, BW=407KiB/s (416kB/s)(10.0MiB/25182msec); 0 zone resets slat (usec): min=23, max=12782, avg=216.74, stdev=612.12 clat (msec): min=15, max=286, avg=155.83, stdev=34.06 lat (msec): min=16, max=286, avg=156.05, stdev=34.06 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 111], 10.00th=[ 122], 20.00th=[ 129], | 30.00th=[ 138], 40.00th=[ 144], 50.00th=[ 150], 60.00th=[ 157], | 70.00th=[ 167], 80.00th=[ 180], 90.00th=[ 201], 95.00th=[ 220], | 99.00th=[ 271], 99.50th=[ 284], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 249, max= 603, per=25.03%, avg=406.96, stdev=77.07, samples=49 iops : min= 62, max= 150, avg=101.43, stdev=19.22, samples=49 lat (msec) : 20=0.04%, 50=0.20%, 100=0.86%, 250=97.23%, 500=1.68% cpu : usr=0.21%, sys=1.42%, ctx=2584, 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=1627KiB/s (1666kB/s), 407KiB/s-410KiB/s (416kB/s-420kB/s), io=40.0MiB (41.9MB), run=24972-25182msec 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=180725: Mon Sep 7 00:01:32 2026 read: IOPS=33, BW=132KiB/s (136kB/s)(5048KiB/38109msec) slat (usec): min=32, max=101313, avg=17291.40, stdev=10291.28 clat (msec): min=68, max=503, avg=226.74, stdev=67.05 lat (msec): min=79, max=528, avg=244.05, stdev=69.47 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 131], 10.00th=[ 146], 20.00th=[ 169], | 30.00th=[ 188], 40.00th=[ 205], 50.00th=[ 220], 60.00th=[ 236], | 70.00th=[ 253], 80.00th=[ 279], 90.00th=[ 317], 95.00th=[ 347], | 99.00th=[ 418], 99.50th=[ 447], 99.90th=[ 481], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 55, max= 253, per=25.27%, avg=131.91, stdev=39.31, samples=75 iops : min= 13, max= 63, avg=32.43, stdev= 9.91, samples=75 write: IOPS=34, BW=136KiB/s (140kB/s)(5192KiB/38109msec); 0 zone resets slat (usec): min=36, max=16496, avg=306.48, stdev=1004.93 clat (msec): min=54, max=466, avg=231.46, stdev=66.67 lat (msec): min=54, max=466, avg=231.77, stdev=66.66 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 136], 10.00th=[ 153], 20.00th=[ 176], | 30.00th=[ 194], 40.00th=[ 209], 50.00th=[ 224], 60.00th=[ 241], | 70.00th=[ 259], 80.00th=[ 284], 90.00th=[ 326], 95.00th=[ 355], | 99.00th=[ 418], 99.50th=[ 435], 99.90th=[ 451], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 71, max= 232, per=25.00%, avg=135.99, stdev=38.37, samples=75 iops : min= 17, max= 58, avg=33.45, stdev= 9.72, samples=75 lat (msec) : 100=0.51%, 250=66.13%, 500=33.32%, 750=0.04% cpu : usr=0.28%, sys=1.66%, ctx=4080, 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=180726: Mon Sep 7 00:01:32 2026 read: IOPS=32, BW=130KiB/s (133kB/s)(4976KiB/38399msec) slat (usec): min=2995, max=75537, avg=17359.56, stdev=9930.96 clat (msec): min=68, max=506, avg=226.05, stdev=67.39 lat (msec): min=91, max=542, avg=243.42, stdev=70.07 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 130], 10.00th=[ 146], 20.00th=[ 171], | 30.00th=[ 188], 40.00th=[ 205], 50.00th=[ 218], 60.00th=[ 234], | 70.00th=[ 251], 80.00th=[ 279], 90.00th=[ 317], 95.00th=[ 351], | 99.00th=[ 426], 99.50th=[ 451], 99.90th=[ 485], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 38, max= 272, per=24.59%, avg=128.37, stdev=38.78, samples=75 iops : min= 9, max= 68, avg=31.55, stdev= 9.80, samples=75 write: IOPS=34, BW=137KiB/s (140kB/s)(5264KiB/38399msec); 0 zone resets slat (usec): min=27, max=11601, avg=270.16, stdev=772.34 clat (msec): min=24, max=459, avg=233.34, stdev=63.59 lat (msec): min=25, max=460, avg=233.61, stdev=63.61 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 142], 10.00th=[ 161], 20.00th=[ 182], | 30.00th=[ 197], 40.00th=[ 211], 50.00th=[ 224], 60.00th=[ 241], | 70.00th=[ 259], 80.00th=[ 284], 90.00th=[ 326], 95.00th=[ 355], | 99.00th=[ 405], 99.50th=[ 422], 99.90th=[ 456], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 63, max= 224, per=25.08%, avg=136.41, stdev=37.94, samples=75 iops : min= 15, max= 56, avg=33.59, stdev= 9.59, samples=75 lat (msec) : 50=0.04%, 100=0.55%, 250=67.34%, 500=32.03%, 750=0.04% cpu : usr=0.26%, sys=1.63%, ctx=3740, 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=180727: Mon Sep 7 00:01:32 2026 read: IOPS=32, BW=130KiB/s (133kB/s)(4984KiB/38310msec) slat (usec): min=2896, max=94491, avg=17520.84, stdev=10236.93 clat (msec): min=12, max=513, avg=226.15, stdev=67.67 lat (msec): min=20, max=528, avg=243.68, stdev=70.23 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 134], 10.00th=[ 146], 20.00th=[ 167], | 30.00th=[ 186], 40.00th=[ 203], 50.00th=[ 218], 60.00th=[ 234], | 70.00th=[ 255], 80.00th=[ 279], 90.00th=[ 317], 95.00th=[ 351], | 99.00th=[ 409], 99.50th=[ 443], 99.90th=[ 502], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 39, max= 215, per=24.86%, avg=129.77, stdev=35.91, samples=75 iops : min= 9, max= 53, avg=31.88, stdev= 9.06, samples=75 write: IOPS=34, BW=137KiB/s (140kB/s)(5256KiB/38310msec); 0 zone resets slat (usec): min=31, max=33790, avg=343.48, stdev=1382.84 clat (msec): min=57, max=475, avg=231.95, stdev=63.86 lat (msec): min=57, max=475, avg=232.29, stdev=63.84 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 138], 10.00th=[ 157], 20.00th=[ 180], | 30.00th=[ 199], 40.00th=[ 213], 50.00th=[ 226], 60.00th=[ 241], | 70.00th=[ 257], 80.00th=[ 279], 90.00th=[ 321], 95.00th=[ 351], | 99.00th=[ 414], 99.50th=[ 439], 99.90th=[ 472], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 47, max= 232, per=25.02%, avg=136.12, stdev=38.20, samples=75 iops : min= 11, max= 58, avg=33.49, stdev= 9.64, samples=75 lat (msec) : 20=0.04%, 100=0.31%, 250=66.99%, 500=32.58%, 750=0.08% cpu : usr=0.26%, sys=1.76%, ctx=4297, 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=180728: Mon Sep 7 00:01:32 2026 read: IOPS=32, BW=132KiB/s (135kB/s)(5060KiB/38393msec) slat (msec): min=3, max=107, avg=17.45, stdev=10.00 clat (msec): min=77, max=462, avg=225.18, stdev=65.82 lat (msec): min=91, max=505, avg=242.65, stdev=68.22 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 130], 10.00th=[ 146], 20.00th=[ 171], | 30.00th=[ 190], 40.00th=[ 205], 50.00th=[ 218], 60.00th=[ 236], | 70.00th=[ 251], 80.00th=[ 271], 90.00th=[ 309], 95.00th=[ 351], | 99.00th=[ 426], 99.50th=[ 447], 99.90th=[ 460], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 63, max= 240, per=25.11%, avg=131.08, stdev=38.19, samples=75 iops : min= 15, max= 60, avg=32.20, stdev= 9.66, samples=75 write: IOPS=33, BW=135KiB/s (138kB/s)(5180KiB/38393msec); 0 zone resets slat (usec): min=30, max=17060, avg=376.55, stdev=1291.40 clat (msec): min=87, max=471, avg=234.14, stdev=65.48 lat (msec): min=87, max=471, avg=234.52, stdev=65.52 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 142], 10.00th=[ 159], 20.00th=[ 180], | 30.00th=[ 197], 40.00th=[ 209], 50.00th=[ 226], 60.00th=[ 243], | 70.00th=[ 262], 80.00th=[ 284], 90.00th=[ 321], 95.00th=[ 359], | 99.00th=[ 426], 99.50th=[ 451], 99.90th=[ 464], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 55, max= 280, per=24.65%, avg=134.08, stdev=39.89, samples=75 iops : min= 13, max= 70, avg=32.99, stdev=10.07, samples=75 lat (msec) : 100=0.31%, 250=66.41%, 500=33.28% cpu : usr=0.25%, sys=1.73%, ctx=4130, 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=523KiB/s (535kB/s), 130KiB/s-132KiB/s (133kB/s-136kB/s), io=19.6MiB (20.5MB), run=38109-38399msec WRITE: bw=544KiB/s (557kB/s), 135KiB/s-137KiB/s (138kB/s-140kB/s), io=20.4MiB (21.4MB), run=38109-38399msec 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=180751: Mon Sep 7 00:01:44 2026 read: IOPS=1, BW=57.6MiB/s (60.4MB/s)(40.0MiB/694msec) slat (nsec): min=25386k, max=25386k, avg=25385515.00, stdev= 0.00 clat (nsec): min=646314k, max=646314k, avg=646314122.00, stdev= 0.00 lat (nsec): min=671707k, max=671707k, avg=671707272.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] lat (msec) : 750=100.00% cpu : usr=0.14%, sys=1.73%, ctx=4, 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=57.6MiB/s (60.4MB/s), 57.6MiB/s-57.6MiB/s (60.4MB/s-60.4MB/s), io=40.0MiB (41.9MB), run=694-694msec 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