== sanity test 398c: run fio to test AIO ================= 15:40:55 (1787859655) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.392001 s, 107 MB/s osc.lustre-OST0000-osc-ffff90fb90345800.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=180104: Thu Aug 27 15:41:34 2026 write: IOPS=89, BW=359KiB/s (367kB/s)(10.0MiB/28538msec); 0 zone resets slat (usec): min=28, max=11026, avg=196.30, stdev=580.22 clat (msec): min=22, max=344, avg=177.89, stdev=39.92 lat (msec): min=22, max=344, avg=178.09, stdev=39.90 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 123], 10.00th=[ 133], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 171], 60.00th=[ 182], | 70.00th=[ 197], 80.00th=[ 211], 90.00th=[ 230], 95.00th=[ 251], | 99.00th=[ 288], 99.50th=[ 313], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 347] bw ( KiB/s): min= 230, max= 485, per=25.12%, avg=358.66, stdev=67.19, samples=56 iops : min= 57, max= 121, avg=89.30, stdev=16.88, samples=56 lat (msec) : 50=0.16%, 100=1.05%, 250=93.48%, 500=5.31% cpu : usr=0.19%, sys=0.82%, ctx=2056, 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=180105: Thu Aug 27 15:41:34 2026 write: IOPS=89, BW=357KiB/s (366kB/s)(10.0MiB/28651msec); 0 zone resets slat (usec): min=28, max=15238, avg=215.54, stdev=773.67 clat (msec): min=31, max=334, avg=178.31, stdev=40.75 lat (msec): min=32, max=334, avg=178.53, stdev=40.75 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 124], 10.00th=[ 132], 20.00th=[ 144], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 171], 60.00th=[ 184], | 70.00th=[ 197], 80.00th=[ 213], 90.00th=[ 234], 95.00th=[ 253], | 99.00th=[ 284], 99.50th=[ 292], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 238, max= 479, per=24.99%, avg=356.82, stdev=66.11, samples=56 iops : min= 59, max= 119, avg=88.86, stdev=16.58, samples=56 lat (msec) : 50=0.08%, 100=0.98%, 250=93.16%, 500=5.78% cpu : usr=0.21%, sys=0.92%, ctx=2565, 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=180106: Thu Aug 27 15:41:34 2026 write: IOPS=89, BW=357KiB/s (366kB/s)(10.0MiB/28668msec); 0 zone resets slat (usec): min=27, max=8164, avg=188.55, stdev=535.95 clat (msec): min=22, max=322, avg=178.29, stdev=40.08 lat (msec): min=23, max=322, avg=178.48, stdev=40.08 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 124], 10.00th=[ 133], 20.00th=[ 146], | 30.00th=[ 155], 40.00th=[ 163], 50.00th=[ 174], 60.00th=[ 184], | 70.00th=[ 197], 80.00th=[ 211], 90.00th=[ 232], 95.00th=[ 251], | 99.00th=[ 275], 99.50th=[ 309], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 253, max= 510, per=24.92%, avg=355.80, stdev=66.00, samples=56 iops : min= 63, max= 127, avg=88.61, stdev=16.62, samples=56 lat (msec) : 50=0.27%, 100=0.35%, 250=93.98%, 500=5.39% cpu : usr=0.18%, sys=0.80%, ctx=1955, 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=180107: Thu Aug 27 15:41:34 2026 write: IOPS=89, BW=357KiB/s (366kB/s)(10.0MiB/28675msec); 0 zone resets slat (usec): min=28, max=16816, avg=211.33, stdev=774.62 clat (msec): min=26, max=391, avg=178.34, stdev=41.44 lat (msec): min=26, max=391, avg=178.55, stdev=41.43 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 123], 10.00th=[ 136], 20.00th=[ 146], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 174], 60.00th=[ 184], | 70.00th=[ 194], 80.00th=[ 209], 90.00th=[ 230], 95.00th=[ 245], | 99.00th=[ 305], 99.50th=[ 330], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 393] bw ( KiB/s): min= 251, max= 488, per=25.00%, avg=357.04, stdev=62.15, samples=56 iops : min= 62, max= 122, avg=88.89, stdev=15.56, samples=56 lat (msec) : 50=0.08%, 100=1.37%, 250=94.10%, 500=4.45% cpu : usr=0.18%, sys=0.88%, ctx=1903, 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=1428KiB/s (1463kB/s), 357KiB/s-359KiB/s (366kB/s-367kB/s), io=40.0MiB (41.9MB), run=28538-28675msec 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=180124: Thu Aug 27 15:42:10 2026 read: IOPS=45, BW=181KiB/s (185kB/s)(5048KiB/27883msec) slat (usec): min=40, max=53949, avg=12269.59, stdev=6368.52 clat (msec): min=74, max=337, avg=165.09, stdev=38.10 lat (msec): min=83, max=348, avg=177.37, stdev=39.31 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 110], 10.00th=[ 120], 20.00th=[ 132], | 30.00th=[ 144], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 194], 90.00th=[ 213], 95.00th=[ 228], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 330], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 116, max= 288, per=25.21%, avg=180.73, stdev=41.13, samples=55 iops : min= 29, max= 72, avg=44.78, stdev=10.32, samples=55 write: IOPS=46, BW=186KiB/s (191kB/s)(5192KiB/27883msec); 0 zone resets slat (usec): min=33, max=14712, avg=320.23, stdev=929.95 clat (msec): min=90, max=339, avg=169.67, stdev=37.78 lat (msec): min=90, max=340, avg=169.99, stdev=37.80 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 118], 10.00th=[ 128], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 199], 90.00th=[ 220], 95.00th=[ 243], | 99.00th=[ 279], 99.50th=[ 296], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 112, max= 279, per=24.95%, avg=186.16, stdev=35.97, samples=55 iops : min= 28, max= 69, avg=46.15, stdev= 9.02, samples=55 lat (msec) : 100=1.52%, 250=95.78%, 500=2.70% cpu : usr=0.31%, sys=2.18%, ctx=4594, 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=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=180125: Thu Aug 27 15:42:10 2026 read: IOPS=44, BW=179KiB/s (183kB/s)(4976KiB/27820msec) slat (usec): min=2852, max=44508, avg=12115.12, stdev=6126.33 clat (msec): min=42, max=335, avg=164.26, stdev=38.14 lat (msec): min=58, max=343, avg=176.38, stdev=39.26 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 109], 10.00th=[ 120], 20.00th=[ 132], | 30.00th=[ 142], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 182], 80.00th=[ 194], 90.00th=[ 215], 95.00th=[ 232], | 99.00th=[ 271], 99.50th=[ 288], 99.90th=[ 330], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 53, max= 296, per=24.86%, avg=178.22, stdev=40.83, samples=55 iops : min= 13, max= 74, avg=44.16, stdev=10.24, samples=55 write: IOPS=47, BW=189KiB/s (194kB/s)(5264KiB/27820msec); 0 zone resets slat (usec): min=29, max=15538, avg=328.18, stdev=907.69 clat (msec): min=91, max=382, avg=169.35, stdev=38.51 lat (msec): min=91, max=382, avg=169.68, stdev=38.51 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 116], 10.00th=[ 126], 20.00th=[ 138], | 30.00th=[ 148], 40.00th=[ 157], 50.00th=[ 167], 60.00th=[ 176], | 70.00th=[ 184], 80.00th=[ 197], 90.00th=[ 220], 95.00th=[ 243], | 99.00th=[ 275], 99.50th=[ 296], 99.90th=[ 376], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 103, max= 319, per=25.37%, avg=189.25, stdev=40.87, samples=55 iops : min= 25, max= 79, avg=46.91, stdev=10.23, samples=55 lat (msec) : 50=0.04%, 100=1.33%, 250=95.82%, 500=2.81% cpu : usr=0.34%, sys=2.20%, ctx=4791, 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=180126: Thu Aug 27 15:42:10 2026 read: IOPS=45, BW=180KiB/s (185kB/s)(4984KiB/27651msec) slat (usec): min=35, max=48151, avg=12348.60, stdev=6328.38 clat (msec): min=76, max=338, avg=164.89, stdev=38.38 lat (msec): min=76, max=353, avg=177.26, stdev=39.69 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 109], 10.00th=[ 118], 20.00th=[ 134], | 30.00th=[ 144], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 182], 80.00th=[ 194], 90.00th=[ 215], 95.00th=[ 230], | 99.00th=[ 284], 99.50th=[ 300], 99.90th=[ 334], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 96, max= 264, per=25.19%, avg=180.61, stdev=35.71, samples=54 iops : min= 24, max= 66, avg=44.76, stdev= 8.91, samples=54 write: IOPS=47, BW=190KiB/s (195kB/s)(5256KiB/27651msec); 0 zone resets slat (usec): min=36, max=10506, avg=290.91, stdev=806.07 clat (msec): min=49, max=353, avg=167.78, stdev=39.58 lat (msec): min=49, max=353, avg=168.07, stdev=39.60 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 113], 10.00th=[ 124], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 197], 90.00th=[ 220], 95.00th=[ 239], | 99.00th=[ 288], 99.50th=[ 313], 99.90th=[ 342], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 79, max= 328, per=25.34%, avg=189.02, stdev=45.60, samples=54 iops : min= 19, max= 82, avg=46.87, stdev=11.49, samples=54 lat (msec) : 50=0.08%, 100=2.62%, 250=94.65%, 500=2.66% cpu : usr=0.29%, sys=2.20%, ctx=4577, 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=180127: Thu Aug 27 15:42:10 2026 read: IOPS=45, BW=181KiB/s (185kB/s)(5060KiB/27975msec) slat (usec): min=61, max=183626, avg=12502.95, stdev=9251.19 clat (msec): min=13, max=385, avg=166.51, stdev=44.10 lat (msec): min=22, max=409, avg=179.03, stdev=45.80 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 108], 10.00th=[ 121], 20.00th=[ 132], | 30.00th=[ 142], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 194], 90.00th=[ 215], 95.00th=[ 239], | 99.00th=[ 326], 99.50th=[ 368], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 95, max= 263, per=24.97%, avg=179.05, stdev=36.23, samples=55 iops : min= 23, max= 65, avg=44.36, stdev= 9.11, samples=55 write: IOPS=46, BW=185KiB/s (190kB/s)(5180KiB/27975msec); 0 zone resets slat (usec): min=34, max=7783, avg=295.22, stdev=718.78 clat (msec): min=30, max=415, avg=169.40, stdev=44.38 lat (msec): min=30, max=415, avg=169.70, stdev=44.39 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 110], 10.00th=[ 123], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 199], 90.00th=[ 222], 95.00th=[ 245], | 99.00th=[ 330], 99.50th=[ 359], 99.90th=[ 393], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 96, max= 296, per=24.51%, avg=182.85, stdev=43.38, samples=55 iops : min= 24, max= 74, avg=45.31, stdev=10.91, samples=55 lat (msec) : 20=0.04%, 50=0.62%, 100=2.07%, 250=93.48%, 500=3.79% cpu : usr=0.36%, sys=2.04%, ctx=4399, majf=0, minf=15 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=717KiB/s (735kB/s), 179KiB/s-181KiB/s (183kB/s-185kB/s), io=19.6MiB (20.5MB), run=27651-27975msec WRITE: bw=747KiB/s (765kB/s), 185KiB/s-190KiB/s (190kB/s-195kB/s), io=20.4MiB (21.4MB), run=27651-27975msec 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=180135: Thu Aug 27 15:42:19 2026 read: IOPS=2, BW=93.7MiB/s (98.2MB/s)(40.0MiB/427msec) slat (nsec): min=47727k, max=47727k, avg=47726665.00, stdev= 0.00 clat (nsec): min=359801k, max=359801k, avg=359801453.00, stdev= 0.00 lat (nsec): min=407534k, max=407534k, avg=407534278.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.76%, ctx=8, majf=0, minf=7 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=93.7MiB/s (98.2MB/s), 93.7MiB/s-93.7MiB/s (98.2MB/s-98.2MB/s), io=40.0MiB (41.9MB), run=427-427msec 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