== sanity test 398c: run fio to test AIO ================= 04:07:10 (1787386030) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.700076 s, 59.9 MB/s osc.lustre-OST0000-osc-ffff91b2a12c6800.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=179533: Sat Aug 22 04:07:51 2026 write: IOPS=86, BW=344KiB/s (352kB/s)(10.0MiB/29765msec); 0 zone resets slat (usec): min=38, max=16685, avg=325.16, stdev=937.44 clat (msec): min=41, max=337, avg=184.62, stdev=44.85 lat (msec): min=42, max=337, avg=184.94, stdev=44.88 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 127], 10.00th=[ 132], 20.00th=[ 148], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 192], | 70.00th=[ 207], 80.00th=[ 228], 90.00th=[ 249], 95.00th=[ 266], | 99.00th=[ 296], 99.50th=[ 326], 99.90th=[ 334], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 239, max= 510, per=24.93%, avg=342.81, stdev=74.04, samples=59 iops : min= 59, max= 127, avg=85.25, stdev=18.49, samples=59 lat (msec) : 50=0.04%, 100=0.08%, 250=90.12%, 500=9.77% cpu : usr=0.18%, sys=1.38%, ctx=2711, 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=179534: Sat Aug 22 04:07:51 2026 write: IOPS=85, BW=344KiB/s (352kB/s)(10.0MiB/29770msec); 0 zone resets slat (usec): min=36, max=24295, avg=346.18, stdev=1059.67 clat (msec): min=22, max=348, avg=184.44, stdev=45.27 lat (msec): min=28, max=348, avg=184.79, stdev=45.28 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 125], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 155], 40.00th=[ 163], 50.00th=[ 176], 60.00th=[ 190], | 70.00th=[ 205], 80.00th=[ 224], 90.00th=[ 249], 95.00th=[ 268], | 99.00th=[ 305], 99.50th=[ 326], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 351] bw ( KiB/s): min= 182, max= 510, per=24.89%, avg=342.19, stdev=77.26, samples=59 iops : min= 45, max= 127, avg=85.14, stdev=19.32, samples=59 lat (msec) : 50=0.16%, 100=0.51%, 250=90.62%, 500=8.71% cpu : usr=0.18%, sys=1.26%, ctx=2359, 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=179535: Sat Aug 22 04:07:51 2026 write: IOPS=86, BW=345KiB/s (353kB/s)(10.0MiB/29671msec); 0 zone resets slat (usec): min=49, max=14026, avg=380.24, stdev=994.34 clat (msec): min=14, max=358, avg=184.04, stdev=47.00 lat (msec): min=15, max=358, avg=184.43, stdev=47.00 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 126], 10.00th=[ 132], 20.00th=[ 144], | 30.00th=[ 155], 40.00th=[ 163], 50.00th=[ 174], 60.00th=[ 188], | 70.00th=[ 207], 80.00th=[ 228], 90.00th=[ 251], 95.00th=[ 266], | 99.00th=[ 326], 99.50th=[ 338], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 182, max= 526, per=25.13%, avg=345.52, stdev=74.73, samples=58 iops : min= 45, max= 131, avg=85.93, stdev=18.65, samples=58 lat (msec) : 20=0.04%, 50=0.20%, 100=0.90%, 250=89.02%, 500=9.84% cpu : usr=0.18%, sys=1.38%, ctx=2698, 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=179536: Sat Aug 22 04:07:51 2026 write: IOPS=86, BW=347KiB/s (355kB/s)(10.0MiB/29505msec); 0 zone resets slat (usec): min=44, max=19913, avg=371.19, stdev=971.40 clat (msec): min=25, max=341, avg=183.86, stdev=46.39 lat (msec): min=27, max=341, avg=184.24, stdev=46.40 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 123], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 190], | 70.00th=[ 205], 80.00th=[ 226], 90.00th=[ 247], 95.00th=[ 268], | 99.00th=[ 309], 99.50th=[ 334], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 223, max= 534, per=25.25%, avg=347.16, stdev=67.90, samples=58 iops : min= 55, max= 133, avg=86.34, stdev=16.96, samples=58 lat (msec) : 50=0.23%, 100=0.55%, 250=90.12%, 500=9.10% cpu : usr=0.25%, sys=1.33%, ctx=3036, 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=1376KiB/s (1409kB/s), 344KiB/s-347KiB/s (352kB/s-355kB/s), io=40.0MiB (41.9MB), run=29505-29770msec 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=179550: Sat Aug 22 04:08:38 2026 read: IOPS=32, BW=132KiB/s (135kB/s)(5048KiB/38336msec) slat (usec): min=650, max=133124, avg=17661.72, stdev=10282.67 clat (msec): min=43, max=550, avg=226.77, stdev=71.23 lat (msec): min=50, max=589, avg=244.44, stdev=73.91 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 133], 10.00th=[ 148], 20.00th=[ 169], | 30.00th=[ 188], 40.00th=[ 205], 50.00th=[ 222], 60.00th=[ 234], | 70.00th=[ 253], 80.00th=[ 279], 90.00th=[ 309], 95.00th=[ 342], | 99.00th=[ 481], 99.50th=[ 510], 99.90th=[ 542], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 54, max= 225, per=24.76%, avg=129.51, stdev=33.88, samples=75 iops : min= 13, max= 56, avg=31.89, stdev= 8.53, samples=75 write: IOPS=33, BW=135KiB/s (139kB/s)(5192KiB/38336msec); 0 zone resets slat (usec): min=54, max=19861, avg=477.70, stdev=1282.51 clat (msec): min=44, max=567, avg=230.08, stdev=63.22 lat (msec): min=44, max=567, avg=230.57, stdev=63.29 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 146], 10.00th=[ 161], 20.00th=[ 182], | 30.00th=[ 197], 40.00th=[ 209], 50.00th=[ 222], 60.00th=[ 236], | 70.00th=[ 255], 80.00th=[ 275], 90.00th=[ 309], 95.00th=[ 330], | 99.00th=[ 468], 99.50th=[ 506], 99.90th=[ 558], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 7, max= 256, per=24.55%, avg=133.55, stdev=41.63, samples=75 iops : min= 1, max= 64, avg=32.91, stdev=10.42, samples=75 lat (msec) : 50=0.12%, 100=1.21%, 250=66.95%, 500=31.09%, 750=0.62% cpu : usr=0.28%, sys=2.01%, ctx=4292, 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=179551: Sat Aug 22 04:08:38 2026 read: IOPS=32, BW=130KiB/s (133kB/s)(4976KiB/38177msec) slat (usec): min=85, max=117434, avg=17501.03, stdev=10655.85 clat (msec): min=40, max=556, avg=225.10, stdev=68.03 lat (msec): min=56, max=593, avg=242.61, stdev=71.11 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 138], 10.00th=[ 150], 20.00th=[ 169], | 30.00th=[ 186], 40.00th=[ 203], 50.00th=[ 215], 60.00th=[ 232], | 70.00th=[ 251], 80.00th=[ 275], 90.00th=[ 313], 95.00th=[ 342], | 99.00th=[ 460], 99.50th=[ 506], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 38, max= 223, per=24.74%, avg=129.37, stdev=36.25, samples=75 iops : min= 9, max= 55, avg=31.87, stdev= 9.07, samples=75 write: IOPS=34, BW=138KiB/s (141kB/s)(5264KiB/38177msec); 0 zone resets slat (usec): min=42, max=22254, avg=460.19, stdev=1405.88 clat (msec): min=89, max=666, avg=231.36, stdev=65.24 lat (msec): min=89, max=666, avg=231.82, stdev=65.32 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 148], 10.00th=[ 161], 20.00th=[ 182], | 30.00th=[ 194], 40.00th=[ 207], 50.00th=[ 222], 60.00th=[ 234], | 70.00th=[ 257], 80.00th=[ 279], 90.00th=[ 309], 95.00th=[ 334], | 99.00th=[ 498], 99.50th=[ 518], 99.90th=[ 584], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 55, max= 216, per=25.25%, avg=137.37, stdev=40.63, samples=75 iops : min= 13, max= 54, avg=33.89, stdev=10.21, samples=75 lat (msec) : 50=0.04%, 100=0.39%, 250=67.77%, 500=31.09%, 750=0.70% cpu : usr=0.26%, sys=2.00%, ctx=4343, 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=179552: Sat Aug 22 04:08:38 2026 read: IOPS=32, BW=131KiB/s (134kB/s)(4984KiB/38159msec) slat (usec): min=52, max=111490, avg=17886.15, stdev=11124.44 clat (msec): min=33, max=587, avg=227.53, stdev=68.87 lat (msec): min=54, max=627, avg=245.43, stdev=72.41 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 138], 10.00th=[ 150], 20.00th=[ 171], | 30.00th=[ 188], 40.00th=[ 201], 50.00th=[ 218], 60.00th=[ 234], | 70.00th=[ 253], 80.00th=[ 279], 90.00th=[ 313], 95.00th=[ 351], | 99.00th=[ 468], 99.50th=[ 485], 99.90th=[ 542], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 62, max= 207, per=24.89%, avg=130.16, stdev=34.58, samples=75 iops : min= 15, max= 51, avg=32.05, stdev= 8.70, samples=75 write: IOPS=34, BW=138KiB/s (141kB/s)(5256KiB/38159msec); 0 zone resets slat (usec): min=39, max=45433, avg=466.69, stdev=1748.86 clat (msec): min=63, max=679, avg=230.33, stdev=68.36 lat (msec): min=64, max=679, avg=230.80, stdev=68.61 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 144], 10.00th=[ 159], 20.00th=[ 180], | 30.00th=[ 192], 40.00th=[ 205], 50.00th=[ 220], 60.00th=[ 236], | 70.00th=[ 257], 80.00th=[ 279], 90.00th=[ 309], 95.00th=[ 330], | 99.00th=[ 485], 99.50th=[ 575], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 15, max= 208, per=25.09%, avg=136.48, stdev=40.85, samples=75 iops : min= 3, max= 52, avg=33.67, stdev=10.23, samples=75 lat (msec) : 50=0.08%, 100=0.43%, 250=67.38%, 500=31.52%, 750=0.59% cpu : usr=0.29%, sys=2.15%, ctx=4230, 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=179553: Sat Aug 22 04:08:38 2026 read: IOPS=33, BW=133KiB/s (136kB/s)(5060KiB/38152msec) slat (usec): min=61, max=102230, avg=17460.09, stdev=10195.11 clat (msec): min=17, max=541, avg=226.51, stdev=68.84 lat (msec): min=17, max=570, avg=243.98, stdev=71.35 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 136], 10.00th=[ 148], 20.00th=[ 171], | 30.00th=[ 190], 40.00th=[ 203], 50.00th=[ 220], 60.00th=[ 236], | 70.00th=[ 255], 80.00th=[ 275], 90.00th=[ 309], 95.00th=[ 330], | 99.00th=[ 489], 99.50th=[ 518], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 39, max= 199, per=25.24%, avg=132.01, stdev=35.56, samples=75 iops : min= 9, max= 49, avg=32.51, stdev= 8.96, samples=75 write: IOPS=33, BW=136KiB/s (139kB/s)(5180KiB/38152msec); 0 zone resets slat (usec): min=51, max=10836, avg=390.87, stdev=948.59 clat (msec): min=57, max=557, avg=230.13, stdev=64.92 lat (msec): min=58, max=558, avg=230.53, stdev=65.01 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 142], 10.00th=[ 159], 20.00th=[ 180], | 30.00th=[ 194], 40.00th=[ 205], 50.00th=[ 220], 60.00th=[ 234], | 70.00th=[ 255], 80.00th=[ 284], 90.00th=[ 313], 95.00th=[ 334], | 99.00th=[ 464], 99.50th=[ 493], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 63, max= 240, per=24.85%, avg=135.16, stdev=37.35, samples=75 iops : min= 15, max= 60, avg=33.31, stdev= 9.38, samples=75 lat (msec) : 20=0.04%, 50=0.12%, 100=0.31%, 250=67.58%, 500=31.33% lat (msec) : 750=0.62% cpu : usr=0.27%, sys=1.86%, ctx=4302, 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 (536kB/s), 130KiB/s-133KiB/s (133kB/s-136kB/s), io=19.6MiB (20.5MB), run=38152-38336msec WRITE: bw=545KiB/s (558kB/s), 135KiB/s-138KiB/s (139kB/s-141kB/s), io=20.4MiB (21.4MB), run=38152-38336msec 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=179563: Sat Aug 22 04:08:51 2026 read: IOPS=1, BW=60.0MiB/s (63.9MB/s)(40.0MiB/656msec) slat (nsec): min=29840k, max=29840k, avg=29839785.00, stdev= 0.00 clat (nsec): min=576165k, max=576165k, avg=576165257.00, stdev= 0.00 lat (nsec): min=606012k, max=606012k, avg=606012392.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] lat (msec) : 750=100.00% cpu : usr=0.31%, sys=2.75%, ctx=5, 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=60.0MiB/s (63.9MB/s), 60.0MiB/s-60.0MiB/s (63.9MB/s-63.9MB/s), io=40.0MiB (41.9MB), run=656-656msec 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