== sanity test 398c: run fio to test AIO ================= 15:43:13 (1779997393) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.519817 s, 80.7 MB/s osc.lustre-OST0000-osc-ffff97d7b8477800.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=180415: Thu May 28 15:43:45 2026 write: IOPS=126, BW=508KiB/s (520kB/s)(10.0MiB/20167msec); 0 zone resets slat (usec): min=38, max=14535, avg=237.03, stdev=735.53 clat (msec): min=16, max=202, avg=125.02, stdev=22.08 lat (msec): min=17, max=203, avg=125.26, stdev=22.06 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 94], 10.00th=[ 101], 20.00th=[ 108], | 30.00th=[ 115], 40.00th=[ 121], 50.00th=[ 124], 60.00th=[ 127], | 70.00th=[ 131], 80.00th=[ 140], 90.00th=[ 157], 95.00th=[ 163], | 99.00th=[ 197], 99.50th=[ 203], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 339, max= 640, per=24.90%, avg=505.65, stdev=71.06, samples=40 iops : min= 84, max= 160, avg=126.12, stdev=17.82, samples=40 lat (msec) : 20=0.04%, 50=0.16%, 100=9.96%, 250=89.84% cpu : usr=0.18%, sys=1.60%, ctx=2497, majf=0, minf=8 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=180416: Thu May 28 15:43:45 2026 write: IOPS=127, BW=511KiB/s (523kB/s)(10.0MiB/20044msec); 0 zone resets slat (usec): min=36, max=15024, avg=241.28, stdev=653.75 clat (msec): min=11, max=235, avg=124.74, stdev=23.74 lat (msec): min=12, max=237, avg=124.99, stdev=23.73 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 95], 10.00th=[ 102], 20.00th=[ 108], | 30.00th=[ 114], 40.00th=[ 117], 50.00th=[ 122], 60.00th=[ 127], | 70.00th=[ 132], 80.00th=[ 140], 90.00th=[ 155], 95.00th=[ 165], | 99.00th=[ 201], 99.50th=[ 207], 99.90th=[ 234], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 408, max= 611, per=25.08%, avg=509.33, stdev=53.45, samples=39 iops : min= 102, max= 152, avg=127.08, stdev=13.39, samples=39 lat (msec) : 20=0.08%, 50=0.47%, 100=8.71%, 250=90.74% cpu : usr=0.20%, sys=1.80%, ctx=3058, 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=180417: Thu May 28 15:43:45 2026 write: IOPS=127, BW=509KiB/s (521kB/s)(10.0MiB/20129msec); 0 zone resets slat (usec): min=41, max=8343, avg=232.19, stdev=587.02 clat (msec): min=17, max=238, avg=124.93, stdev=22.81 lat (msec): min=18, max=238, avg=125.16, stdev=22.80 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 95], 10.00th=[ 102], 20.00th=[ 109], | 30.00th=[ 113], 40.00th=[ 118], 50.00th=[ 123], 60.00th=[ 127], | 70.00th=[ 131], 80.00th=[ 140], 90.00th=[ 153], 95.00th=[ 171], | 99.00th=[ 203], 99.50th=[ 209], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 384, max= 638, per=24.95%, avg=506.72, stdev=62.55, samples=39 iops : min= 96, max= 159, avg=126.41, stdev=15.69, samples=39 lat (msec) : 20=0.08%, 50=0.16%, 100=8.83%, 250=90.94% cpu : usr=0.16%, sys=1.53%, ctx=2940, 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=180418: Thu May 28 15:43:45 2026 write: IOPS=126, BW=508KiB/s (520kB/s)(10.0MiB/20161msec); 0 zone resets slat (usec): min=37, max=21853, avg=216.29, stdev=682.19 clat (msec): min=14, max=204, avg=125.06, stdev=22.26 lat (msec): min=15, max=204, avg=125.28, stdev=22.23 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 93], 10.00th=[ 101], 20.00th=[ 108], | 30.00th=[ 114], 40.00th=[ 118], 50.00th=[ 123], 60.00th=[ 129], | 70.00th=[ 133], 80.00th=[ 142], 90.00th=[ 157], 95.00th=[ 165], | 99.00th=[ 192], 99.50th=[ 197], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 333, max= 638, per=24.91%, avg=505.95, stdev=71.01, samples=39 iops : min= 83, max= 159, avg=126.23, stdev=17.81, samples=39 lat (msec) : 20=0.04%, 50=0.04%, 100=10.00%, 250=89.92% cpu : usr=0.20%, sys=1.38%, ctx=2266, 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 Run status group 0 (all jobs): WRITE: bw=2031KiB/s (2080kB/s), 508KiB/s-511KiB/s (520kB/s-523kB/s), io=40.0MiB (41.9MB), run=20044-20167msec 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=180431: Thu May 28 15:44:23 2026 read: IOPS=45, BW=181KiB/s (185kB/s)(5048KiB/27871msec) slat (usec): min=57, max=58039, avg=12527.97, stdev=6945.58 clat (msec): min=24, max=291, avg=165.67, stdev=39.71 lat (msec): min=31, max=321, avg=178.20, stdev=41.21 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 101], 10.00th=[ 113], 20.00th=[ 133], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 167], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 201], 90.00th=[ 215], 95.00th=[ 232], | 99.00th=[ 257], 99.50th=[ 268], 99.90th=[ 288], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 111, max= 286, per=25.38%, avg=180.42, stdev=37.58, samples=55 iops : min= 27, max= 71, avg=44.62, stdev= 9.46, samples=55 write: IOPS=46, BW=186KiB/s (191kB/s)(5192KiB/27871msec); 0 zone resets slat (usec): min=42, max=16939, avg=266.38, stdev=803.78 clat (msec): min=81, max=326, avg=169.35, stdev=36.76 lat (msec): min=81, max=326, avg=169.62, stdev=36.74 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 107], 10.00th=[ 121], 20.00th=[ 140], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 171], 60.00th=[ 180], | 70.00th=[ 188], 80.00th=[ 201], 90.00th=[ 213], 95.00th=[ 230], | 99.00th=[ 257], 99.50th=[ 275], 99.90th=[ 313], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 111, max= 277, per=25.10%, avg=185.73, stdev=40.85, samples=55 iops : min= 27, max= 69, avg=45.95, stdev=10.27, samples=55 lat (msec) : 50=0.20%, 100=3.52%, 250=94.77%, 500=1.52% cpu : usr=0.31%, sys=2.18%, ctx=4490, 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=180432: Thu May 28 15:44:23 2026 read: IOPS=44, BW=176KiB/s (181kB/s)(4976KiB/28223msec) slat (usec): min=2281, max=47985, avg=12658.85, stdev=7147.18 clat (msec): min=8, max=283, avg=166.36, stdev=39.01 lat (msec): min=25, max=306, avg=179.02, stdev=40.33 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 102], 10.00th=[ 115], 20.00th=[ 133], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 188], 80.00th=[ 199], 90.00th=[ 218], 95.00th=[ 232], | 99.00th=[ 264], 99.50th=[ 271], 99.90th=[ 279], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 80, max= 317, per=24.60%, avg=174.88, stdev=41.62, samples=56 iops : min= 20, max= 79, avg=43.25, stdev=10.40, samples=56 write: IOPS=46, BW=187KiB/s (191kB/s)(5264KiB/28223msec); 0 zone resets slat (usec): min=36, max=15861, avg=313.20, stdev=940.17 clat (msec): min=78, max=300, avg=170.73, stdev=37.83 lat (msec): min=79, max=300, avg=171.04, stdev=37.82 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 106], 10.00th=[ 116], 20.00th=[ 142], | 30.00th=[ 153], 40.00th=[ 163], 50.00th=[ 171], 60.00th=[ 180], | 70.00th=[ 190], 80.00th=[ 203], 90.00th=[ 218], 95.00th=[ 232], | 99.00th=[ 264], 99.50th=[ 288], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 102, max= 318, per=25.11%, avg=185.80, stdev=45.22, samples=56 iops : min= 25, max= 79, avg=45.95, stdev=11.33, samples=56 lat (msec) : 10=0.04%, 50=0.04%, 100=3.75%, 250=94.38%, 500=1.80% cpu : usr=0.29%, sys=2.21%, ctx=4334, 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=180433: Thu May 28 15:44:23 2026 read: IOPS=44, BW=177KiB/s (181kB/s)(4984KiB/28177msec) slat (usec): min=2950, max=61455, avg=12652.82, stdev=7025.01 clat (msec): min=66, max=310, avg=167.33, stdev=40.16 lat (msec): min=80, max=324, avg=179.99, stdev=41.44 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 100], 10.00th=[ 112], 20.00th=[ 133], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 188], 80.00th=[ 201], 90.00th=[ 220], 95.00th=[ 236], | 99.00th=[ 262], 99.50th=[ 279], 99.90th=[ 296], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 95, max= 328, per=24.78%, avg=176.20, stdev=42.51, samples=55 iops : min= 23, max= 82, avg=43.53, stdev=10.70, samples=55 write: IOPS=46, BW=187KiB/s (191kB/s)(5256KiB/28177msec); 0 zone resets slat (usec): min=59, max=16661, avg=299.62, stdev=910.07 clat (msec): min=74, max=318, avg=169.13, stdev=37.73 lat (msec): min=74, max=318, avg=169.43, stdev=37.70 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 106], 10.00th=[ 118], 20.00th=[ 138], | 30.00th=[ 148], 40.00th=[ 161], 50.00th=[ 171], 60.00th=[ 180], | 70.00th=[ 190], 80.00th=[ 199], 90.00th=[ 218], 95.00th=[ 230], | 99.00th=[ 255], 99.50th=[ 292], 99.90th=[ 305], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 80, max= 302, per=24.93%, avg=184.49, stdev=43.93, samples=55 iops : min= 20, max= 75, avg=45.65, stdev=10.94, samples=55 lat (msec) : 100=4.10%, 250=94.22%, 500=1.68% cpu : usr=0.27%, sys=2.25%, ctx=4683, 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=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=180434: Thu May 28 15:44:23 2026 read: IOPS=44, BW=179KiB/s (184kB/s)(5060KiB/28212msec) slat (usec): min=2347, max=66763, avg=12709.65, stdev=7121.30 clat (msec): min=79, max=305, avg=165.83, stdev=39.49 lat (msec): min=86, max=312, avg=178.55, stdev=41.14 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 103], 10.00th=[ 113], 20.00th=[ 129], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 188], 80.00th=[ 199], 90.00th=[ 215], 95.00th=[ 230], | 99.00th=[ 271], 99.50th=[ 279], 99.90th=[ 300], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 94, max= 310, per=25.05%, avg=178.12, stdev=41.10, samples=56 iops : min= 23, max= 77, avg=44.04, stdev=10.31, samples=56 write: IOPS=45, BW=184KiB/s (188kB/s)(5180KiB/28212msec); 0 zone resets slat (usec): min=56, max=20714, avg=288.84, stdev=944.48 clat (msec): min=60, max=321, avg=171.62, stdev=40.78 lat (msec): min=60, max=321, avg=171.91, stdev=40.79 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 106], 10.00th=[ 116], 20.00th=[ 134], | 30.00th=[ 150], 40.00th=[ 161], 50.00th=[ 171], 60.00th=[ 184], | 70.00th=[ 194], 80.00th=[ 205], 90.00th=[ 224], 95.00th=[ 243], | 99.00th=[ 266], 99.50th=[ 284], 99.90th=[ 313], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 111, max= 277, per=24.66%, avg=182.46, stdev=39.90, samples=56 iops : min= 27, max= 69, avg=45.14, stdev=10.03, samples=56 lat (msec) : 100=3.75%, 250=93.44%, 500=2.81% cpu : usr=0.26%, sys=2.11%, ctx=4567, 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=711KiB/s (728kB/s), 176KiB/s-181KiB/s (181kB/s-185kB/s), io=19.6MiB (20.5MB), run=27871-28223msec WRITE: bw=740KiB/s (758kB/s), 184KiB/s-187KiB/s (188kB/s-191kB/s), io=20.4MiB (21.4MB), run=27871-28223msec 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=180443: Thu May 28 15:44:32 2026 read: IOPS=2, BW=101MiB/s (106MB/s)(40.0MiB/395msec) slat (nsec): min=23939k, max=23939k, avg=23938846.00, stdev= 0.00 clat (nsec): min=353291k, max=353291k, avg=353291058.00, stdev= 0.00 lat (nsec): min=377234k, max=377234k, avg=377233535.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.04%, ctx=7, 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=101MiB/s (106MB/s), 101MiB/s-101MiB/s (106MB/s-106MB/s), io=40.0MiB (41.9MB), run=395-395msec 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