== sanity test 398c: run fio to test AIO ================= 12:34:02 (1787589242) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.673009 s, 62.3 MB/s osc.lustre-OST0000-osc-ffff8c36527d5000.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=180177: Mon Aug 24 12:34:44 2026 write: IOPS=84, BW=339KiB/s (347kB/s)(10.0MiB/30236msec); 0 zone resets slat (usec): min=26, max=30176, avg=204.41, stdev=931.81 clat (msec): min=46, max=361, avg=187.84, stdev=55.62 lat (msec): min=46, max=362, avg=188.05, stdev=55.62 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 105], 10.00th=[ 120], 20.00th=[ 146], | 30.00th=[ 163], 40.00th=[ 171], 50.00th=[ 182], 60.00th=[ 199], | 70.00th=[ 211], 80.00th=[ 228], 90.00th=[ 264], 95.00th=[ 292], | 99.00th=[ 347], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 166, max= 566, per=24.84%, avg=336.32, stdev=91.01, samples=60 iops : min= 41, max= 141, avg=83.68, stdev=22.75, samples=60 lat (msec) : 50=0.62%, 100=3.32%, 250=84.06%, 500=11.99% cpu : usr=0.14%, sys=0.86%, ctx=2098, 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=180178: Mon Aug 24 12:34:44 2026 write: IOPS=85, BW=341KiB/s (349kB/s)(10.0MiB/30039msec); 0 zone resets slat (usec): min=26, max=20564, avg=240.35, stdev=957.26 clat (msec): min=13, max=361, avg=187.27, stdev=55.60 lat (msec): min=13, max=361, avg=187.51, stdev=55.61 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 100], 10.00th=[ 115], 20.00th=[ 148], | 30.00th=[ 165], 40.00th=[ 174], 50.00th=[ 182], 60.00th=[ 197], | 70.00th=[ 209], 80.00th=[ 230], 90.00th=[ 259], 95.00th=[ 288], | 99.00th=[ 334], 99.50th=[ 351], 99.90th=[ 355], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 150, max= 641, per=25.04%, avg=339.03, stdev=95.58, samples=59 iops : min= 37, max= 160, avg=84.32, stdev=23.89, samples=59 lat (msec) : 20=0.12%, 50=0.47%, 100=4.84%, 250=82.15%, 500=12.42% cpu : usr=0.18%, sys=1.02%, ctx=2755, 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=180179: Mon Aug 24 12:34:44 2026 write: IOPS=84, BW=339KiB/s (348kB/s)(10.0MiB/30168msec); 0 zone resets slat (usec): min=29, max=21707, avg=229.84, stdev=903.76 clat (msec): min=53, max=360, avg=187.95, stdev=55.41 lat (msec): min=53, max=360, avg=188.18, stdev=55.47 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 101], 10.00th=[ 121], 20.00th=[ 148], | 30.00th=[ 161], 40.00th=[ 174], 50.00th=[ 184], 60.00th=[ 197], | 70.00th=[ 211], 80.00th=[ 230], 90.00th=[ 264], 95.00th=[ 284], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 363] bw ( KiB/s): min= 192, max= 637, per=24.88%, avg=336.88, stdev=93.86, samples=59 iops : min= 48, max= 159, avg=83.80, stdev=23.47, samples=59 lat (msec) : 100=4.88%, 250=81.68%, 500=13.44% cpu : usr=0.14%, sys=0.87%, ctx=2587, 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=180180: Mon Aug 24 12:34:44 2026 write: IOPS=84, BW=339KiB/s (347kB/s)(10.0MiB/30225msec); 0 zone resets slat (usec): min=28, max=20928, avg=208.76, stdev=848.00 clat (msec): min=22, max=368, avg=187.64, stdev=55.53 lat (msec): min=22, max=368, avg=187.85, stdev=55.51 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 103], 10.00th=[ 117], 20.00th=[ 146], | 30.00th=[ 161], 40.00th=[ 171], 50.00th=[ 184], 60.00th=[ 197], | 70.00th=[ 213], 80.00th=[ 230], 90.00th=[ 257], 95.00th=[ 288], | 99.00th=[ 351], 99.50th=[ 355], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 200, max= 597, per=24.76%, avg=335.22, stdev=88.81, samples=59 iops : min= 50, max= 149, avg=83.39, stdev=22.19, samples=59 lat (msec) : 50=0.39%, 100=4.45%, 250=82.54%, 500=12.62% cpu : usr=0.15%, sys=0.93%, ctx=2289, 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 Run status group 0 (all jobs): WRITE: bw=1355KiB/s (1387kB/s), 339KiB/s-341KiB/s (347kB/s-349kB/s), io=40.0MiB (41.9MB), run=30039-30236msec 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=180195: Mon Aug 24 12:35:26 2026 read: IOPS=40, BW=162KiB/s (166kB/s)(5048KiB/31176msec) slat (usec): min=2768, max=58155, avg=13780.29, stdev=7520.62 clat (msec): min=31, max=360, avg=183.14, stdev=42.54 lat (msec): min=45, max=395, avg=196.93, stdev=44.68 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 121], 10.00th=[ 134], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 167], 50.00th=[ 180], 60.00th=[ 192], | 70.00th=[ 205], 80.00th=[ 220], 90.00th=[ 239], 95.00th=[ 257], | 99.00th=[ 305], 99.50th=[ 313], 99.90th=[ 351], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 45, max= 271, per=25.02%, avg=160.85, stdev=36.69, samples=61 iops : min= 11, max= 67, avg=39.77, stdev= 9.18, samples=61 write: IOPS=41, BW=167KiB/s (171kB/s)(5192KiB/31176msec); 0 zone resets slat (usec): min=29, max=5400, avg=217.91, stdev=464.98 clat (msec): min=28, max=349, avg=189.31, stdev=40.66 lat (msec): min=28, max=349, avg=189.53, stdev=40.65 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 131], 10.00th=[ 138], 20.00th=[ 155], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 197], | 70.00th=[ 207], 80.00th=[ 220], 90.00th=[ 243], 95.00th=[ 266], | 99.00th=[ 309], 99.50th=[ 317], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 38, max= 253, per=24.77%, avg=165.95, stdev=38.82, samples=61 iops : min= 9, max= 63, avg=41.05, stdev= 9.78, samples=61 lat (msec) : 50=0.12%, 100=0.47%, 250=92.30%, 500=7.11% cpu : usr=0.23%, sys=1.82%, ctx=4355, 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=180196: Mon Aug 24 12:35:26 2026 read: IOPS=39, BW=160KiB/s (164kB/s)(4976KiB/31159msec) slat (usec): min=45, max=48969, avg=13602.56, stdev=7256.52 clat (msec): min=6, max=372, avg=182.93, stdev=44.58 lat (msec): min=14, max=395, avg=196.54, stdev=46.40 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 122], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 169], 50.00th=[ 178], 60.00th=[ 190], | 70.00th=[ 201], 80.00th=[ 220], 90.00th=[ 243], 95.00th=[ 259], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 355], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 84, max= 256, per=24.69%, avg=158.79, stdev=39.68, samples=61 iops : min= 21, max= 64, avg=39.25, stdev= 9.98, samples=61 write: IOPS=42, BW=169KiB/s (173kB/s)(5264KiB/31159msec); 0 zone resets slat (usec): min=32, max=13628, avg=272.45, stdev=856.90 clat (msec): min=98, max=355, avg=192.27, stdev=42.22 lat (msec): min=99, max=355, avg=192.55, stdev=42.23 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 131], 10.00th=[ 142], 20.00th=[ 157], | 30.00th=[ 169], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 211], 80.00th=[ 224], 90.00th=[ 249], 95.00th=[ 271], | 99.00th=[ 313], 99.50th=[ 334], 99.90th=[ 338], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 55, max= 237, per=25.13%, avg=168.36, stdev=37.19, samples=61 iops : min= 13, max= 59, avg=41.66, stdev= 9.33, samples=61 lat (msec) : 10=0.04%, 20=0.04%, 50=0.20%, 100=0.20%, 250=90.86% lat (msec) : 500=8.67% cpu : usr=0.31%, sys=1.85%, ctx=4536, 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=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=180197: Mon Aug 24 12:35:26 2026 read: IOPS=39, BW=160KiB/s (164kB/s)(4984KiB/31178msec) slat (usec): min=2817, max=67614, avg=13856.91, stdev=7667.89 clat (msec): min=14, max=332, avg=182.56, stdev=42.73 lat (msec): min=22, max=346, avg=196.43, stdev=44.84 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 118], 10.00th=[ 131], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 169], 50.00th=[ 180], 60.00th=[ 190], | 70.00th=[ 203], 80.00th=[ 218], 90.00th=[ 239], 95.00th=[ 259], | 99.00th=[ 292], 99.50th=[ 305], 99.90th=[ 330], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 255, per=24.65%, avg=158.51, stdev=41.06, samples=61 iops : min= 7, max= 63, avg=39.18, stdev=10.32, samples=61 write: IOPS=42, BW=169KiB/s (173kB/s)(5256KiB/31178msec); 0 zone resets slat (usec): min=28, max=18441, avg=253.52, stdev=889.15 clat (msec): min=29, max=342, avg=189.85, stdev=43.13 lat (msec): min=29, max=342, avg=190.11, stdev=43.14 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 130], 10.00th=[ 140], 20.00th=[ 157], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 209], 80.00th=[ 224], 90.00th=[ 247], 95.00th=[ 266], | 99.00th=[ 305], 99.50th=[ 317], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 38, max= 256, per=24.78%, avg=166.00, stdev=40.96, samples=61 iops : min= 9, max= 64, avg=41.05, stdev=10.25, samples=61 lat (msec) : 20=0.04%, 50=0.27%, 100=0.74%, 250=91.09%, 500=7.85% cpu : usr=0.29%, sys=1.71%, ctx=4479, 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=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=180198: Mon Aug 24 12:35:26 2026 read: IOPS=40, BW=162KiB/s (166kB/s)(5060KiB/31155msec) slat (usec): min=2689, max=58826, avg=13592.58, stdev=7585.85 clat (msec): min=29, max=389, avg=180.77, stdev=42.85 lat (msec): min=34, max=420, avg=194.37, stdev=45.28 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 121], 10.00th=[ 132], 20.00th=[ 144], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 188], | 70.00th=[ 199], 80.00th=[ 215], 90.00th=[ 236], 95.00th=[ 257], | 99.00th=[ 309], 99.50th=[ 321], 99.90th=[ 347], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 30, max= 247, per=25.12%, avg=161.54, stdev=42.50, samples=61 iops : min= 7, max= 61, avg=39.93, stdev=10.69, samples=61 write: IOPS=41, BW=166KiB/s (170kB/s)(5180KiB/31155msec); 0 zone resets slat (usec): min=28, max=6268, avg=206.09, stdev=479.44 clat (msec): min=18, max=369, avg=191.41, stdev=42.39 lat (msec): min=18, max=369, avg=191.62, stdev=42.38 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 133], 10.00th=[ 144], 20.00th=[ 157], | 30.00th=[ 169], 40.00th=[ 178], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 209], 80.00th=[ 222], 90.00th=[ 247], 95.00th=[ 268], | 99.00th=[ 330], 99.50th=[ 342], 99.90th=[ 363], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 53, max= 269, per=24.67%, avg=165.30, stdev=38.59, samples=61 iops : min= 13, max= 67, avg=40.89, stdev= 9.70, samples=61 lat (msec) : 20=0.04%, 50=0.12%, 100=0.43%, 250=91.72%, 500=7.70% cpu : usr=0.26%, sys=1.71%, ctx=4428, 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=644KiB/s (659kB/s), 160KiB/s-162KiB/s (164kB/s-166kB/s), io=19.6MiB (20.5MB), run=31155-31178msec WRITE: bw=670KiB/s (686kB/s), 166KiB/s-169KiB/s (170kB/s-173kB/s), io=20.4MiB (21.4MB), run=31155-31178msec 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=180206: Mon Aug 24 12:35:36 2026 read: IOPS=1, BW=77.7MiB/s (81.4MB/s)(40.0MiB/515msec) slat (nsec): min=50279k, max=50279k, avg=50279339.00, stdev= 0.00 clat (nsec): min=434179k, max=434179k, avg=434179285.00, stdev= 0.00 lat (nsec): min=484464k, max=484464k, avg=484463809.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.72%, ctx=13, 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=77.7MiB/s (81.4MB/s), 77.7MiB/s-77.7MiB/s (81.4MB/s-81.4MB/s), io=40.0MiB (41.9MB), run=515-515msec 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