== sanity test 398c: run fio to test AIO ================= 09:41:00 (1787751660) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.557715 s, 75.2 MB/s osc.lustre-OST0000-osc-ffffa01fc8542000.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=179216: Wed Aug 26 09:41:43 2026 write: IOPS=80, BW=323KiB/s (331kB/s)(10.0MiB/31679msec); 0 zone resets slat (usec): min=28, max=13792, avg=194.41, stdev=714.48 clat (msec): min=33, max=342, avg=197.09, stdev=51.41 lat (msec): min=33, max=342, avg=197.29, stdev=51.42 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 117], 10.00th=[ 130], 20.00th=[ 155], | 30.00th=[ 171], 40.00th=[ 180], 50.00th=[ 194], 60.00th=[ 209], | 70.00th=[ 222], 80.00th=[ 243], 90.00th=[ 266], 95.00th=[ 284], | 99.00th=[ 330], 99.50th=[ 338], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 126, max= 525, per=25.01%, avg=323.10, stdev=78.31, samples=62 iops : min= 31, max= 131, avg=80.34, stdev=19.63, samples=62 lat (msec) : 50=0.04%, 100=1.45%, 250=82.81%, 500=15.70% cpu : usr=0.16%, sys=0.87%, ctx=1719, 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=179217: Wed Aug 26 09:41:43 2026 write: IOPS=81, BW=325KiB/s (333kB/s)(10.0MiB/31533msec); 0 zone resets slat (usec): min=29, max=12193, avg=244.75, stdev=740.35 clat (msec): min=21, max=410, avg=196.22, stdev=54.60 lat (msec): min=21, max=410, avg=196.46, stdev=54.62 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 115], 10.00th=[ 129], 20.00th=[ 150], | 30.00th=[ 165], 40.00th=[ 180], 50.00th=[ 192], 60.00th=[ 209], | 70.00th=[ 224], 80.00th=[ 241], 90.00th=[ 268], 95.00th=[ 292], | 99.00th=[ 321], 99.50th=[ 347], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 223, max= 565, per=25.13%, avg=324.68, stdev=80.17, samples=62 iops : min= 55, max= 141, avg=80.76, stdev=20.11, samples=62 lat (msec) : 50=0.20%, 100=2.30%, 250=82.19%, 500=15.31% cpu : usr=0.19%, sys=1.06%, ctx=2310, 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=179218: Wed Aug 26 09:41:43 2026 write: IOPS=81, BW=325KiB/s (333kB/s)(10.0MiB/31480msec); 0 zone resets slat (usec): min=29, max=14668, avg=246.91, stdev=876.64 clat (msec): min=24, max=435, avg=196.31, stdev=53.68 lat (msec): min=25, max=435, avg=196.55, stdev=53.67 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 114], 10.00th=[ 126], 20.00th=[ 153], | 30.00th=[ 165], 40.00th=[ 180], 50.00th=[ 194], 60.00th=[ 207], | 70.00th=[ 224], 80.00th=[ 239], 90.00th=[ 268], 95.00th=[ 288], | 99.00th=[ 334], 99.50th=[ 347], 99.90th=[ 397], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 213, max= 525, per=25.18%, avg=325.29, stdev=77.79, samples=62 iops : min= 53, max= 131, avg=80.89, stdev=19.49, samples=62 lat (msec) : 50=0.08%, 100=1.72%, 250=82.30%, 500=15.90% cpu : usr=0.17%, sys=1.05%, ctx=2167, 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=179219: Wed Aug 26 09:41:43 2026 write: IOPS=80, BW=323KiB/s (331kB/s)(10.0MiB/31684msec); 0 zone resets slat (usec): min=30, max=27889, avg=290.66, stdev=1041.56 clat (msec): min=33, max=414, avg=197.12, stdev=52.21 lat (msec): min=33, max=414, avg=197.41, stdev=52.21 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 117], 10.00th=[ 131], 20.00th=[ 153], | 30.00th=[ 167], 40.00th=[ 180], 50.00th=[ 194], 60.00th=[ 205], | 70.00th=[ 224], 80.00th=[ 241], 90.00th=[ 268], 95.00th=[ 288], | 99.00th=[ 326], 99.50th=[ 342], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 197, max= 549, per=25.03%, avg=323.40, stdev=76.62, samples=62 iops : min= 49, max= 137, avg=80.45, stdev=19.20, samples=62 lat (msec) : 50=0.08%, 100=1.41%, 250=83.16%, 500=15.35% cpu : usr=0.21%, sys=1.13%, ctx=2857, 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=1293KiB/s (1324kB/s), 323KiB/s-325KiB/s (331kB/s-333kB/s), io=40.0MiB (41.9MB), run=31480-31684msec 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=179234: Wed Aug 26 09:42:29 2026 read: IOPS=36, BW=145KiB/s (149kB/s)(5048KiB/34727msec) slat (usec): min=53, max=72918, avg=15323.07, stdev=8583.44 clat (msec): min=27, max=402, avg=205.67, stdev=52.62 lat (msec): min=27, max=427, avg=221.01, stdev=54.55 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 132], 10.00th=[ 144], 20.00th=[ 161], | 30.00th=[ 176], 40.00th=[ 188], 50.00th=[ 199], 60.00th=[ 213], | 70.00th=[ 232], 80.00th=[ 255], 90.00th=[ 275], 95.00th=[ 296], | 99.00th=[ 342], 99.50th=[ 351], 99.90th=[ 388], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 71, max= 247, per=25.22%, avg=144.51, stdev=33.11, samples=68 iops : min= 17, max= 61, avg=35.59, stdev= 8.29, samples=68 write: IOPS=37, BW=150KiB/s (153kB/s)(5192KiB/34727msec); 0 zone resets slat (usec): min=33, max=19299, avg=277.40, stdev=896.35 clat (msec): min=49, max=389, avg=212.35, stdev=48.60 lat (msec): min=49, max=389, avg=212.63, stdev=48.60 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 142], 10.00th=[ 155], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 197], 50.00th=[ 207], 60.00th=[ 222], | 70.00th=[ 236], 80.00th=[ 253], 90.00th=[ 279], 95.00th=[ 296], | 99.00th=[ 342], 99.50th=[ 351], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 71, max= 223, per=25.05%, avg=149.29, stdev=35.49, samples=68 iops : min= 17, max= 55, avg=36.82, stdev= 8.93, samples=68 lat (msec) : 50=0.20%, 100=0.35%, 250=77.50%, 500=21.95% cpu : usr=0.39%, sys=1.91%, ctx=4619, 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=179235: Wed Aug 26 09:42:29 2026 read: IOPS=35, BW=143KiB/s (146kB/s)(4976KiB/34872msec) slat (usec): min=2993, max=69849, avg=15650.93, stdev=8435.50 clat (msec): min=14, max=374, avg=205.00, stdev=47.93 lat (msec): min=32, max=392, avg=220.66, stdev=49.97 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 136], 10.00th=[ 148], 20.00th=[ 165], | 30.00th=[ 178], 40.00th=[ 188], 50.00th=[ 201], 60.00th=[ 213], | 70.00th=[ 228], 80.00th=[ 245], 90.00th=[ 275], 95.00th=[ 292], | 99.00th=[ 321], 99.50th=[ 334], 99.90th=[ 368], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 55, max= 215, per=24.72%, avg=141.65, stdev=36.64, samples=69 iops : min= 13, max= 53, avg=34.87, stdev= 9.19, samples=69 write: IOPS=37, BW=151KiB/s (155kB/s)(5264KiB/34872msec); 0 zone resets slat (usec): min=30, max=16249, avg=283.84, stdev=872.80 clat (msec): min=101, max=405, avg=212.49, stdev=47.77 lat (msec): min=106, max=405, avg=212.78, stdev=47.77 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 144], 10.00th=[ 155], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 194], 50.00th=[ 207], 60.00th=[ 222], | 70.00th=[ 236], 80.00th=[ 255], 90.00th=[ 279], 95.00th=[ 300], | 99.00th=[ 334], 99.50th=[ 359], 99.90th=[ 397], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 78, max= 231, per=25.25%, avg=150.49, stdev=34.37, samples=69 iops : min= 19, max= 57, avg=37.12, stdev= 8.61, samples=69 lat (msec) : 20=0.04%, 50=0.04%, 250=80.20%, 500=19.73% cpu : usr=0.31%, sys=1.96%, ctx=4493, 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=179236: Wed Aug 26 09:42:29 2026 read: IOPS=35, BW=142KiB/s (146kB/s)(4984KiB/35005msec) slat (usec): min=3486, max=67301, avg=15481.48, stdev=8419.90 clat (msec): min=16, max=413, avg=205.82, stdev=50.64 lat (msec): min=39, max=439, avg=221.31, stdev=52.37 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 133], 10.00th=[ 146], 20.00th=[ 163], | 30.00th=[ 178], 40.00th=[ 190], 50.00th=[ 201], 60.00th=[ 213], | 70.00th=[ 230], 80.00th=[ 249], 90.00th=[ 279], 95.00th=[ 292], | 99.00th=[ 334], 99.50th=[ 351], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 55, max= 231, per=24.79%, avg=142.07, stdev=37.61, samples=69 iops : min= 13, max= 57, avg=34.99, stdev= 9.43, samples=69 write: IOPS=37, BW=150KiB/s (154kB/s)(5256KiB/35005msec); 0 zone resets slat (usec): min=35, max=12619, avg=307.81, stdev=903.80 clat (msec): min=61, max=452, avg=213.61, stdev=49.71 lat (msec): min=61, max=453, avg=213.92, stdev=49.71 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 140], 10.00th=[ 155], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 222], | 70.00th=[ 239], 80.00th=[ 255], 90.00th=[ 279], 95.00th=[ 300], | 99.00th=[ 355], 99.50th=[ 372], 99.90th=[ 422], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 75, max= 231, per=25.02%, avg=149.12, stdev=37.70, samples=69 iops : min= 18, max= 57, avg=36.75, stdev= 9.47, samples=69 lat (msec) : 20=0.04%, 50=0.04%, 100=0.16%, 250=78.87%, 500=20.90% cpu : usr=0.33%, sys=1.97%, ctx=4540, 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=179237: Wed Aug 26 09:42:29 2026 read: IOPS=36, BW=145KiB/s (148kB/s)(5060KiB/35006msec) slat (usec): min=2867, max=79397, avg=15555.91, stdev=8457.89 clat (msec): min=102, max=405, avg=207.08, stdev=49.29 lat (msec): min=108, max=427, avg=222.65, stdev=50.67 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 134], 10.00th=[ 148], 20.00th=[ 165], | 30.00th=[ 180], 40.00th=[ 190], 50.00th=[ 203], 60.00th=[ 218], | 70.00th=[ 228], 80.00th=[ 247], 90.00th=[ 271], 95.00th=[ 292], | 99.00th=[ 342], 99.50th=[ 368], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 63, max= 207, per=25.18%, avg=144.26, stdev=29.73, samples=69 iops : min= 15, max= 51, avg=35.54, stdev= 7.45, samples=69 write: IOPS=36, BW=148KiB/s (152kB/s)(5180KiB/35006msec); 0 zone resets slat (usec): min=30, max=28628, avg=307.42, stdev=1150.90 clat (msec): min=105, max=389, avg=211.97, stdev=46.18 lat (msec): min=105, max=389, avg=212.28, stdev=46.20 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 144], 10.00th=[ 159], 20.00th=[ 174], | 30.00th=[ 186], 40.00th=[ 194], 50.00th=[ 207], 60.00th=[ 220], | 70.00th=[ 232], 80.00th=[ 251], 90.00th=[ 275], 95.00th=[ 292], | 99.00th=[ 342], 99.50th=[ 355], 99.90th=[ 376], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 71, max= 255, per=24.65%, avg=146.91, stdev=36.65, samples=69 iops : min= 17, max= 63, avg=36.19, stdev= 9.16, samples=69 lat (msec) : 250=80.47%, 500=19.53% cpu : usr=0.34%, sys=2.00%, ctx=4502, 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=573KiB/s (587kB/s), 142KiB/s-145KiB/s (146kB/s-149kB/s), io=19.6MiB (20.5MB), run=34727-35006msec WRITE: bw=597KiB/s (611kB/s), 148KiB/s-151KiB/s (152kB/s-155kB/s), io=20.4MiB (21.4MB), run=34727-35006msec 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=179247: Wed Aug 26 09:42:41 2026 read: IOPS=1, BW=60.9MiB/s (63.8MB/s)(40.0MiB/657msec) slat (nsec): min=49159k, max=49159k, avg=49158674.00, stdev= 0.00 clat (nsec): min=577819k, max=577819k, avg=577819369.00, stdev= 0.00 lat (nsec): min=626985k, max=626985k, avg=626984603.00, 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=0.00%, sys=2.29%, ctx=6, 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=60.9MiB/s (63.8MB/s), 60.9MiB/s-60.9MiB/s (63.8MB/s-63.8MB/s), io=40.0MiB (41.9MB), run=657-657msec 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