== sanity test 398c: run fio to test AIO ================= 14:13:00 (1787854380) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.502131 s, 83.5 MB/s osc.lustre-OST0000-osc-ffff9e9c034c4000.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=179978: Thu Aug 27 14:13:33 2026 write: IOPS=105, BW=420KiB/s (431kB/s)(10.0MiB/24357msec); 0 zone resets slat (usec): min=28, max=14443, avg=171.98, stdev=596.70 clat (msec): min=24, max=261, avg=151.36, stdev=34.03 lat (msec): min=24, max=262, avg=151.53, stdev=34.06 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 107], 10.00th=[ 113], 20.00th=[ 125], | 30.00th=[ 132], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 155], | 70.00th=[ 167], 80.00th=[ 180], 90.00th=[ 197], 95.00th=[ 220], | 99.00th=[ 249], 99.50th=[ 255], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 303, max= 544, per=24.95%, avg=419.33, stdev=67.69, samples=48 iops : min= 75, max= 136, avg=104.38, stdev=16.99, samples=48 lat (msec) : 50=0.04%, 100=3.98%, 250=95.39%, 500=0.59% cpu : usr=0.11%, sys=0.85%, ctx=1872, 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=179979: Thu Aug 27 14:13:33 2026 write: IOPS=105, BW=420KiB/s (431kB/s)(10.0MiB/24357msec); 0 zone resets slat (usec): min=22, max=10548, avg=165.67, stdev=529.10 clat (msec): min=24, max=265, avg=151.27, stdev=33.96 lat (msec): min=25, max=265, avg=151.44, stdev=33.98 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 108], 10.00th=[ 113], 20.00th=[ 124], | 30.00th=[ 131], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 157], | 70.00th=[ 167], 80.00th=[ 178], 90.00th=[ 197], 95.00th=[ 213], | 99.00th=[ 245], 99.50th=[ 259], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 286, max= 638, per=24.91%, avg=418.73, stdev=73.18, samples=48 iops : min= 71, max= 159, avg=104.25, stdev=18.37, samples=48 lat (msec) : 50=0.04%, 100=2.38%, 250=96.91%, 500=0.66% cpu : usr=0.15%, sys=0.87%, ctx=2096, 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=179980: Thu Aug 27 14:13:33 2026 write: IOPS=105, BW=423KiB/s (434kB/s)(10.0MiB/24185msec); 0 zone resets slat (usec): min=29, max=24168, avg=227.42, stdev=897.92 clat (msec): min=19, max=317, avg=150.77, stdev=35.24 lat (msec): min=19, max=317, avg=151.00, stdev=35.20 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 105], 10.00th=[ 112], 20.00th=[ 124], | 30.00th=[ 131], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 157], | 70.00th=[ 165], 80.00th=[ 178], 90.00th=[ 199], 95.00th=[ 213], | 99.00th=[ 247], 99.50th=[ 262], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 317] bw ( KiB/s): min= 302, max= 587, per=25.05%, avg=421.08, stdev=66.58, samples=48 iops : min= 75, max= 146, avg=104.79, stdev=16.69, samples=48 lat (msec) : 20=0.04%, 50=0.20%, 100=3.59%, 250=95.20%, 500=0.98% cpu : usr=0.23%, sys=1.03%, ctx=3094, 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=179981: Thu Aug 27 14:13:33 2026 write: IOPS=105, BW=420KiB/s (431kB/s)(10.0MiB/24355msec); 0 zone resets slat (usec): min=30, max=22088, avg=199.78, stdev=699.98 clat (msec): min=18, max=302, avg=151.02, stdev=34.11 lat (msec): min=18, max=302, avg=151.22, stdev=34.13 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 105], 10.00th=[ 112], 20.00th=[ 124], | 30.00th=[ 131], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 157], | 70.00th=[ 165], 80.00th=[ 180], 90.00th=[ 199], 95.00th=[ 213], | 99.00th=[ 245], 99.50th=[ 251], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 270, max= 574, per=24.95%, avg=419.48, stdev=70.03, samples=48 iops : min= 67, max= 143, avg=104.42, stdev=17.55, samples=48 lat (msec) : 20=0.04%, 50=0.31%, 100=2.89%, 250=96.09%, 500=0.66% cpu : usr=0.23%, sys=1.14%, ctx=3088, 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=1682KiB/s (1722kB/s), 420KiB/s-423KiB/s (431kB/s-434kB/s), io=40.0MiB (41.9MB), run=24185-24357msec 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=179996: Thu Aug 27 14:14:12 2026 read: IOPS=40, BW=162KiB/s (166kB/s)(5048KiB/31083msec) slat (usec): min=2501, max=80699, avg=13398.24, stdev=7107.51 clat (msec): min=79, max=295, avg=183.65, stdev=37.76 lat (msec): min=90, max=319, avg=197.06, stdev=38.83 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 125], 10.00th=[ 136], 20.00th=[ 150], | 30.00th=[ 163], 40.00th=[ 171], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 203], 80.00th=[ 218], 90.00th=[ 236], 95.00th=[ 247], | 99.00th=[ 271], 99.50th=[ 284], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 92, max= 246, per=25.13%, avg=161.61, stdev=33.09, samples=61 iops : min= 23, max= 61, avg=39.92, stdev= 8.33, samples=61 write: IOPS=41, BW=167KiB/s (171kB/s)(5192KiB/31083msec); 0 zone resets slat (usec): min=31, max=9133, avg=230.06, stdev=669.93 clat (msec): min=82, max=320, avg=188.81, stdev=37.04 lat (msec): min=82, max=320, avg=189.04, stdev=37.06 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 134], 10.00th=[ 144], 20.00th=[ 157], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 207], 80.00th=[ 220], 90.00th=[ 236], 95.00th=[ 253], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 313], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 99, max= 231, per=24.91%, avg=166.62, stdev=30.77, samples=61 iops : min= 24, max= 57, avg=41.18, stdev= 7.79, samples=61 lat (msec) : 100=0.55%, 250=94.41%, 500=5.04% cpu : usr=0.26%, sys=1.91%, ctx=4610, 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=179997: Thu Aug 27 14:14:12 2026 read: IOPS=40, BW=161KiB/s (164kB/s)(4976KiB/31000msec) slat (usec): min=53, max=73030, avg=13545.40, stdev=7438.14 clat (msec): min=16, max=333, avg=184.21, stdev=42.86 lat (msec): min=16, max=348, avg=197.77, stdev=43.91 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 123], 10.00th=[ 136], 20.00th=[ 150], | 30.00th=[ 159], 40.00th=[ 169], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 205], 80.00th=[ 220], 90.00th=[ 239], 95.00th=[ 257], | 99.00th=[ 300], 99.50th=[ 313], 99.90th=[ 330], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 71, max= 256, per=24.83%, avg=159.66, stdev=31.89, samples=61 iops : min= 17, max= 64, avg=39.44, stdev= 8.05, samples=61 write: IOPS=42, BW=170KiB/s (174kB/s)(5264KiB/31000msec); 0 zone resets slat (usec): min=29, max=11484, avg=213.84, stdev=726.76 clat (msec): min=73, max=371, avg=189.26, stdev=38.52 lat (msec): min=73, max=371, avg=189.47, stdev=38.54 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 131], 10.00th=[ 142], 20.00th=[ 157], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 199], | 70.00th=[ 207], 80.00th=[ 222], 90.00th=[ 241], 95.00th=[ 255], | 99.00th=[ 288], 99.50th=[ 305], 99.90th=[ 363], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 107, max= 248, per=25.34%, avg=169.52, stdev=36.15, samples=61 iops : min= 26, max= 62, avg=41.90, stdev= 9.04, samples=61 lat (msec) : 20=0.08%, 50=0.08%, 100=0.59%, 250=92.73%, 500=6.52% cpu : usr=0.23%, sys=1.71%, ctx=4645, 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=179998: Thu Aug 27 14:14:12 2026 read: IOPS=39, BW=160KiB/s (164kB/s)(4984KiB/31203msec) slat (usec): min=2738, max=56208, avg=13277.15, stdev=7076.48 clat (msec): min=66, max=339, avg=183.95, stdev=40.43 lat (msec): min=85, max=359, avg=197.24, stdev=41.69 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 124], 10.00th=[ 133], 20.00th=[ 148], | 30.00th=[ 163], 40.00th=[ 171], 50.00th=[ 182], 60.00th=[ 194], | 70.00th=[ 205], 80.00th=[ 220], 90.00th=[ 236], 95.00th=[ 251], | 99.00th=[ 284], 99.50th=[ 296], 99.90th=[ 334], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 79, max= 238, per=24.71%, avg=158.89, stdev=36.41, samples=61 iops : min= 19, max= 59, avg=39.23, stdev= 9.17, samples=61 write: IOPS=42, BW=168KiB/s (172kB/s)(5256KiB/31203msec); 0 zone resets slat (usec): min=32, max=9561, avg=232.44, stdev=683.04 clat (msec): min=50, max=318, avg=190.20, stdev=39.06 lat (msec): min=50, max=318, avg=190.43, stdev=39.06 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 131], 10.00th=[ 140], 20.00th=[ 157], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 190], 60.00th=[ 201], | 70.00th=[ 209], 80.00th=[ 222], 90.00th=[ 243], 95.00th=[ 259], | 99.00th=[ 288], 99.50th=[ 296], 99.90th=[ 309], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 86, max= 231, per=24.85%, avg=166.28, stdev=36.82, samples=61 iops : min= 21, max= 57, avg=41.10, stdev= 9.27, samples=61 lat (msec) : 100=0.82%, 250=92.85%, 500=6.33% cpu : usr=0.28%, sys=1.67%, ctx=4310, 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=179999: Thu Aug 27 14:14:12 2026 read: IOPS=40, BW=162KiB/s (166kB/s)(5060KiB/31191msec) slat (usec): min=2725, max=58061, avg=13804.79, stdev=7500.33 clat (msec): min=23, max=334, avg=184.28, stdev=40.99 lat (msec): min=34, max=347, avg=198.09, stdev=42.15 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 124], 10.00th=[ 136], 20.00th=[ 150], | 30.00th=[ 161], 40.00th=[ 171], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 207], 80.00th=[ 220], 90.00th=[ 239], 95.00th=[ 255], | 99.00th=[ 288], 99.50th=[ 305], 99.90th=[ 326], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 71, max= 223, per=25.13%, avg=161.61, stdev=35.59, samples=61 iops : min= 17, max= 55, avg=39.92, stdev= 8.97, samples=61 write: IOPS=41, BW=166KiB/s (170kB/s)(5180KiB/31191msec); 0 zone resets slat (usec): min=34, max=12183, avg=279.81, stdev=969.21 clat (msec): min=98, max=306, avg=188.84, stdev=37.47 lat (msec): min=98, max=306, avg=189.13, stdev=37.52 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 132], 10.00th=[ 144], 20.00th=[ 157], | 30.00th=[ 165], 40.00th=[ 176], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 209], 80.00th=[ 222], 90.00th=[ 236], 95.00th=[ 257], | 99.00th=[ 288], 99.50th=[ 296], 99.90th=[ 305], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 87, max= 264, per=24.69%, avg=165.18, stdev=35.40, samples=61 iops : min= 21, max= 66, avg=40.84, stdev= 8.93, samples=61 lat (msec) : 50=0.08%, 100=0.39%, 250=93.28%, 500=6.25% cpu : usr=0.26%, sys=1.80%, ctx=4235, 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=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=643KiB/s (659kB/s), 160KiB/s-162KiB/s (164kB/s-166kB/s), io=19.6MiB (20.5MB), run=31000-31203msec WRITE: bw=670KiB/s (686kB/s), 166KiB/s-170KiB/s (170kB/s-174kB/s), io=20.4MiB (21.4MB), run=31000-31203msec 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=180008: Thu Aug 27 14:14:23 2026 read: IOPS=2, BW=87.7MiB/s (91.0MB/s)(40.0MiB/456msec) slat (nsec): min=33931k, max=33931k, avg=33931194.00, stdev= 0.00 clat (nsec): min=404155k, max=404155k, avg=404154552.00, stdev= 0.00 lat (nsec): min=438089k, max=438089k, avg=438089347.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.64%, ctx=6, 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=87.7MiB/s (91.0MB/s), 87.7MiB/s-87.7MiB/s (91.0MB/s-91.0MB/s), io=40.0MiB (41.9MB), run=456-456msec 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