== sanity test 398c: run fio to test AIO ================= 08:36:38 (1787402198) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.42942 s, 97.7 MB/s osc.lustre-OST0000-osc-ffff9dc3e0598800.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=179928: Sat Aug 22 08:37:17 2026 write: IOPS=88, BW=356KiB/s (364kB/s)(10.0MiB/28798msec); 0 zone resets slat (usec): min=50, max=12016, avg=351.96, stdev=898.70 clat (msec): min=40, max=415, avg=178.63, stdev=39.57 lat (msec): min=40, max=415, avg=178.99, stdev=39.54 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 123], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 199], 80.00th=[ 209], 90.00th=[ 224], 95.00th=[ 243], | 99.00th=[ 266], 99.50th=[ 380], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 207, max= 508, per=24.98%, avg=354.96, stdev=67.10, samples=57 iops : min= 51, max= 127, avg=88.35, stdev=16.77, samples=57 lat (msec) : 50=0.04%, 100=0.90%, 250=95.39%, 500=3.67% cpu : usr=0.20%, sys=1.16%, ctx=2654, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=179929: Sat Aug 22 08:37:17 2026 write: IOPS=89, BW=357KiB/s (366kB/s)(10.0MiB/28651msec); 0 zone resets slat (usec): min=38, max=15247, avg=339.11, stdev=829.67 clat (msec): min=29, max=384, avg=178.48, stdev=40.95 lat (msec): min=29, max=384, avg=178.83, stdev=40.95 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 115], 10.00th=[ 131], 20.00th=[ 148], | 30.00th=[ 159], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 184], | 70.00th=[ 199], 80.00th=[ 209], 90.00th=[ 228], 95.00th=[ 247], | 99.00th=[ 279], 99.50th=[ 321], 99.90th=[ 368], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 247, max= 500, per=25.09%, avg=356.54, stdev=69.45, samples=56 iops : min= 61, max= 125, avg=88.75, stdev=17.37, samples=56 lat (msec) : 50=0.12%, 100=1.72%, 250=93.95%, 500=4.22% cpu : usr=0.17%, sys=1.32%, ctx=2709, 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=179930: Sat Aug 22 08:37:17 2026 write: IOPS=89, BW=358KiB/s (366kB/s)(10.0MiB/28620msec); 0 zone resets slat (usec): min=54, max=16343, avg=388.51, stdev=989.45 clat (msec): min=26, max=384, avg=178.29, stdev=41.72 lat (msec): min=27, max=384, avg=178.68, stdev=41.68 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 113], 10.00th=[ 130], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 199], 80.00th=[ 211], 90.00th=[ 228], 95.00th=[ 247], | 99.00th=[ 292], 99.50th=[ 317], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 199, max= 577, per=25.13%, avg=357.16, stdev=67.82, samples=56 iops : min= 49, max= 144, avg=88.91, stdev=16.96, samples=56 lat (msec) : 50=0.12%, 100=1.72%, 250=93.63%, 500=4.53% cpu : usr=0.23%, sys=1.46%, ctx=2917, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=179931: Sat Aug 22 08:37:17 2026 write: IOPS=88, BW=355KiB/s (364kB/s)(10.0MiB/28808msec); 0 zone resets slat (usec): min=37, max=20158, avg=380.65, stdev=990.91 clat (msec): min=22, max=414, avg=178.77, stdev=39.77 lat (msec): min=22, max=415, avg=179.15, stdev=39.72 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 120], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 211], 90.00th=[ 224], 95.00th=[ 243], | 99.00th=[ 271], 99.50th=[ 368], 99.90th=[ 397], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 175, max= 508, per=24.98%, avg=354.95, stdev=62.85, samples=57 iops : min= 43, max= 127, avg=88.35, stdev=15.75, samples=57 lat (msec) : 50=0.12%, 100=0.51%, 250=96.09%, 500=3.28% cpu : usr=0.19%, sys=1.36%, ctx=2975, 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=1422KiB/s (1456kB/s), 355KiB/s-358KiB/s (364kB/s-366kB/s), io=40.0MiB (41.9MB), run=28620-28808msec 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=179946: Sat Aug 22 08:37:57 2026 read: IOPS=39, BW=158KiB/s (162kB/s)(5048KiB/31977msec) slat (usec): min=2514, max=73401, avg=14204.07, stdev=7723.74 clat (msec): min=44, max=489, avg=188.61, stdev=46.62 lat (msec): min=52, max=510, avg=202.83, stdev=48.47 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 124], 10.00th=[ 136], 20.00th=[ 153], | 30.00th=[ 165], 40.00th=[ 176], 50.00th=[ 184], 60.00th=[ 194], | 70.00th=[ 205], 80.00th=[ 220], 90.00th=[ 247], 95.00th=[ 271], | 99.00th=[ 338], 99.50th=[ 401], 99.90th=[ 472], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 65, max= 230, per=25.01%, avg=156.79, stdev=34.25, samples=63 iops : min= 16, max= 57, avg=38.70, stdev= 8.59, samples=63 write: IOPS=40, BW=162KiB/s (166kB/s)(5192KiB/31977msec); 0 zone resets slat (usec): min=57, max=16811, avg=511.27, stdev=1150.00 clat (msec): min=88, max=461, avg=193.08, stdev=41.83 lat (msec): min=88, max=461, avg=193.59, stdev=41.80 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 136], 10.00th=[ 144], 20.00th=[ 159], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 201], | 70.00th=[ 211], 80.00th=[ 224], 90.00th=[ 245], 95.00th=[ 268], | 99.00th=[ 300], 99.50th=[ 363], 99.90th=[ 447], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 43, max= 311, per=24.75%, avg=161.63, stdev=43.96, samples=63 iops : min= 10, max= 77, avg=39.90, stdev=11.04, samples=63 lat (msec) : 50=0.08%, 100=0.31%, 250=90.47%, 500=9.14% cpu : usr=0.28%, sys=2.27%, ctx=4467, 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=179947: Sat Aug 22 08:37:57 2026 read: IOPS=39, BW=156KiB/s (160kB/s)(4976KiB/31854msec) slat (usec): min=60, max=64866, avg=14183.76, stdev=7593.75 clat (msec): min=35, max=438, avg=189.87, stdev=47.28 lat (msec): min=46, max=454, avg=204.06, stdev=48.78 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 127], 10.00th=[ 138], 20.00th=[ 155], | 30.00th=[ 165], 40.00th=[ 176], 50.00th=[ 184], 60.00th=[ 194], | 70.00th=[ 205], 80.00th=[ 220], 90.00th=[ 251], 95.00th=[ 275], | 99.00th=[ 351], 99.50th=[ 401], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 70, max= 215, per=24.77%, avg=155.30, stdev=29.95, samples=63 iops : min= 17, max= 53, avg=38.32, stdev= 7.51, samples=63 write: IOPS=41, BW=165KiB/s (169kB/s)(5264KiB/31854msec); 0 zone resets slat (usec): min=54, max=21173, avg=454.54, stdev=1022.34 clat (msec): min=90, max=471, avg=193.34, stdev=43.95 lat (msec): min=90, max=471, avg=193.80, stdev=43.95 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 132], 10.00th=[ 144], 20.00th=[ 159], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 199], | 70.00th=[ 209], 80.00th=[ 224], 90.00th=[ 249], 95.00th=[ 271], | 99.00th=[ 313], 99.50th=[ 409], 99.90th=[ 464], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 55, max= 263, per=25.26%, avg=164.97, stdev=42.08, samples=63 iops : min= 13, max= 65, avg=40.75, stdev=10.54, samples=63 lat (msec) : 50=0.04%, 100=0.23%, 250=89.88%, 500=9.84% cpu : usr=0.27%, sys=2.29%, ctx=4488, 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=179948: Sat Aug 22 08:37:57 2026 read: IOPS=38, BW=156KiB/s (160kB/s)(4984KiB/31981msec) slat (usec): min=3102, max=86660, avg=14253.47, stdev=7948.69 clat (msec): min=8, max=421, avg=187.82, stdev=45.81 lat (msec): min=17, max=432, avg=202.09, stdev=47.76 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 126], 10.00th=[ 138], 20.00th=[ 153], | 30.00th=[ 165], 40.00th=[ 176], 50.00th=[ 184], 60.00th=[ 192], | 70.00th=[ 203], 80.00th=[ 218], 90.00th=[ 247], 95.00th=[ 271], | 99.00th=[ 330], 99.50th=[ 355], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 57, max= 256, per=24.67%, avg=154.67, stdev=39.85, samples=63 iops : min= 14, max= 64, avg=38.16, stdev=10.01, samples=63 write: IOPS=41, BW=164KiB/s (168kB/s)(5256KiB/31981msec); 0 zone resets slat (usec): min=43, max=15869, avg=448.86, stdev=991.25 clat (msec): min=22, max=447, avg=194.41, stdev=45.12 lat (msec): min=23, max=447, avg=194.86, stdev=45.11 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 132], 10.00th=[ 146], 20.00th=[ 161], | 30.00th=[ 171], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 203], | 70.00th=[ 213], 80.00th=[ 226], 90.00th=[ 249], 95.00th=[ 266], | 99.00th=[ 334], 99.50th=[ 363], 99.90th=[ 414], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 71, max= 239, per=24.80%, avg=161.95, stdev=35.87, samples=63 iops : min= 17, max= 59, avg=39.98, stdev= 8.95, samples=63 lat (msec) : 10=0.04%, 20=0.08%, 50=0.47%, 100=0.39%, 250=89.84% lat (msec) : 500=9.18% cpu : usr=0.30%, sys=2.41%, ctx=4414, 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=179949: Sat Aug 22 08:37:57 2026 read: IOPS=39, BW=158KiB/s (162kB/s)(5060KiB/31980msec) slat (usec): min=3089, max=53686, avg=14144.72, stdev=7585.55 clat (msec): min=81, max=454, avg=187.94, stdev=45.77 lat (msec): min=88, max=471, avg=202.10, stdev=47.36 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 126], 10.00th=[ 138], 20.00th=[ 153], | 30.00th=[ 163], 40.00th=[ 174], 50.00th=[ 184], 60.00th=[ 194], | 70.00th=[ 207], 80.00th=[ 218], 90.00th=[ 243], 95.00th=[ 266], | 99.00th=[ 334], 99.50th=[ 359], 99.90th=[ 443], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 72, max= 255, per=25.17%, avg=157.81, stdev=37.55, samples=63 iops : min= 18, max= 63, avg=38.95, stdev= 9.38, samples=63 write: IOPS=40, BW=162KiB/s (166kB/s)(5180KiB/31980msec); 0 zone resets slat (usec): min=62, max=25538, avg=484.01, stdev=1286.18 clat (msec): min=88, max=451, avg=194.92, stdev=42.88 lat (msec): min=89, max=451, avg=195.40, stdev=42.83 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 132], 10.00th=[ 144], 20.00th=[ 159], | 30.00th=[ 174], 40.00th=[ 182], 50.00th=[ 192], 60.00th=[ 201], | 70.00th=[ 211], 80.00th=[ 226], 90.00th=[ 249], 95.00th=[ 271], | 99.00th=[ 309], 99.50th=[ 363], 99.90th=[ 447], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 71, max= 252, per=24.67%, avg=161.08, stdev=39.06, samples=63 iops : min= 17, max= 63, avg=39.76, stdev= 9.80, samples=63 lat (msec) : 100=0.47%, 250=90.39%, 500=9.14% cpu : usr=0.29%, sys=2.27%, ctx=4722, 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=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=627KiB/s (643kB/s), 156KiB/s-158KiB/s (160kB/s-162kB/s), io=19.6MiB (20.5MB), run=31854-31981msec WRITE: bw=653KiB/s (669kB/s), 162KiB/s-165KiB/s (166kB/s-169kB/s), io=20.4MiB (21.4MB), run=31854-31981msec 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=179958: Sat Aug 22 08:38:09 2026 read: IOPS=1, BW=71.4MiB/s (74.9MB/s)(40.0MiB/560msec) slat (nsec): min=40021k, max=40021k, avg=40021391.00, stdev= 0.00 clat (nsec): min=495326k, max=495326k, avg=495325609.00, stdev= 0.00 lat (nsec): min=535352k, max=535352k, avg=535352106.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.15%, ctx=8, 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=71.4MiB/s (74.9MB/s), 71.4MiB/s-71.4MiB/s (74.9MB/s-74.9MB/s), io=40.0MiB (41.9MB), run=560-560msec 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