== sanity test 398c: run fio to test AIO ================= 06:42:20 (1787395340) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.5514 s, 76.1 MB/s osc.lustre-OST0000-osc-ffff8cc32fd06000.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=179232: Sat Aug 22 06:42:59 2026 write: IOPS=91, BW=368KiB/s (377kB/s)(10.0MiB/27828msec); 0 zone resets slat (usec): min=40, max=30963, avg=356.00, stdev=1245.19 clat (msec): min=28, max=346, avg=172.42, stdev=44.74 lat (msec): min=29, max=346, avg=172.78, stdev=44.75 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 105], 10.00th=[ 120], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 192], 80.00th=[ 207], 90.00th=[ 230], 95.00th=[ 251], | 99.00th=[ 305], 99.50th=[ 317], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 253, max= 512, per=24.95%, avg=366.80, stdev=76.46, samples=55 iops : min= 63, max= 128, avg=91.36, stdev=19.14, samples=55 lat (msec) : 50=0.20%, 100=2.77%, 250=91.45%, 500=5.59% cpu : usr=0.15%, sys=1.19%, ctx=2875, 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=179233: Sat Aug 22 06:42:59 2026 write: IOPS=92, BW=370KiB/s (379kB/s)(10.0MiB/27672msec); 0 zone resets slat (usec): min=41, max=18853, avg=351.95, stdev=1030.65 clat (msec): min=24, max=346, avg=172.22, stdev=45.26 lat (msec): min=26, max=346, avg=172.58, stdev=45.23 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 107], 10.00th=[ 122], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 182], | 70.00th=[ 192], 80.00th=[ 211], 90.00th=[ 232], 95.00th=[ 255], | 99.00th=[ 296], 99.50th=[ 321], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 247, max= 605, per=25.03%, avg=367.87, stdev=82.20, samples=54 iops : min= 61, max= 151, avg=91.65, stdev=20.54, samples=54 lat (msec) : 50=0.35%, 100=2.97%, 250=90.23%, 500=6.45% cpu : usr=0.17%, sys=1.45%, ctx=2962, 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=179234: Sat Aug 22 06:42:59 2026 write: IOPS=91, BW=368KiB/s (377kB/s)(10.0MiB/27844msec); 0 zone resets slat (usec): min=40, max=10745, avg=273.07, stdev=764.36 clat (msec): min=23, max=329, avg=172.65, stdev=44.43 lat (msec): min=24, max=330, avg=172.93, stdev=44.44 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 110], 10.00th=[ 122], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 180], | 70.00th=[ 190], 80.00th=[ 207], 90.00th=[ 230], 95.00th=[ 259], | 99.00th=[ 296], 99.50th=[ 305], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 253, max= 605, per=24.95%, avg=366.82, stdev=80.12, samples=55 iops : min= 63, max= 151, avg=91.38, stdev=20.08, samples=55 lat (msec) : 50=0.04%, 100=2.42%, 250=90.90%, 500=6.64% cpu : usr=0.15%, sys=1.08%, ctx=2210, 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=179235: Sat Aug 22 06:42:59 2026 write: IOPS=91, BW=368KiB/s (377kB/s)(10.0MiB/27846msec); 0 zone resets slat (usec): min=37, max=14208, avg=316.90, stdev=997.70 clat (msec): min=37, max=325, avg=172.28, stdev=42.91 lat (msec): min=37, max=325, avg=172.60, stdev=42.96 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 110], 10.00th=[ 122], 20.00th=[ 134], | 30.00th=[ 148], 40.00th=[ 161], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 192], 80.00th=[ 207], 90.00th=[ 230], 95.00th=[ 249], | 99.00th=[ 284], 99.50th=[ 305], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 326] bw ( KiB/s): min= 231, max= 605, per=24.93%, avg=366.51, stdev=79.84, samples=55 iops : min= 57, max= 151, avg=91.29, stdev=20.05, samples=55 lat (msec) : 50=0.04%, 100=1.41%, 250=93.59%, 500=4.96% cpu : usr=0.16%, sys=1.07%, ctx=2497, 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=1471KiB/s (1506kB/s), 368KiB/s-370KiB/s (377kB/s-379kB/s), io=40.0MiB (41.9MB), run=27672-27846msec 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=179251: Sat Aug 22 06:43:41 2026 read: IOPS=39, BW=156KiB/s (160kB/s)(5048KiB/32303msec) slat (usec): min=2801, max=59829, avg=14892.55, stdev=8488.11 clat (msec): min=68, max=358, avg=190.80, stdev=51.88 lat (msec): min=75, max=375, avg=205.70, stdev=53.86 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 110], 10.00th=[ 125], 20.00th=[ 146], | 30.00th=[ 163], 40.00th=[ 176], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 218], 80.00th=[ 232], 90.00th=[ 259], 95.00th=[ 284], | 99.00th=[ 326], 99.50th=[ 338], 99.90th=[ 351], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 267, per=25.03%, avg=155.19, stdev=43.90, samples=64 iops : min= 7, max= 66, avg=38.31, stdev=11.03, samples=64 write: IOPS=40, BW=161KiB/s (165kB/s)(5192KiB/32303msec); 0 zone resets slat (usec): min=46, max=18877, avg=295.86, stdev=805.56 clat (msec): min=29, max=357, avg=194.23, stdev=49.56 lat (msec): min=29, max=357, avg=194.53, stdev=49.60 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 115], 10.00th=[ 131], 20.00th=[ 157], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 192], 60.00th=[ 203], | 70.00th=[ 215], 80.00th=[ 234], 90.00th=[ 264], 95.00th=[ 284], | 99.00th=[ 321], 99.50th=[ 334], 99.90th=[ 351], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 255, per=24.77%, avg=160.00, stdev=46.32, samples=64 iops : min= 1, max= 63, avg=39.55, stdev=11.59, samples=64 lat (msec) : 50=0.08%, 100=1.99%, 250=84.65%, 500=13.28% cpu : usr=0.20%, sys=2.03%, ctx=4227, 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=179252: Sat Aug 22 06:43:41 2026 read: IOPS=38, BW=154KiB/s (158kB/s)(4976KiB/32316msec) slat (usec): min=2186, max=73333, avg=14822.66, stdev=8523.92 clat (msec): min=45, max=361, avg=190.04, stdev=52.26 lat (msec): min=66, max=386, avg=204.87, stdev=54.34 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 110], 10.00th=[ 125], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 174], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 213], 80.00th=[ 234], 90.00th=[ 266], 95.00th=[ 284], | 99.00th=[ 321], 99.50th=[ 338], 99.90th=[ 355], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 80, max= 240, per=25.04%, avg=155.27, stdev=36.41, samples=63 iops : min= 20, max= 60, avg=38.38, stdev= 9.14, samples=63 write: IOPS=40, BW=163KiB/s (167kB/s)(5264KiB/32316msec); 0 zone resets slat (usec): min=48, max=10522, avg=297.71, stdev=688.23 clat (msec): min=40, max=343, avg=195.58, stdev=49.30 lat (msec): min=40, max=343, avg=195.89, stdev=49.27 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 117], 10.00th=[ 134], 20.00th=[ 153], | 30.00th=[ 169], 40.00th=[ 182], 50.00th=[ 192], 60.00th=[ 207], | 70.00th=[ 224], 80.00th=[ 236], 90.00th=[ 262], 95.00th=[ 279], | 99.00th=[ 317], 99.50th=[ 321], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 45, max= 283, per=25.14%, avg=162.39, stdev=44.00, samples=64 iops : min= 11, max= 70, avg=40.14, stdev=11.02, samples=64 lat (msec) : 50=0.08%, 100=2.38%, 250=83.75%, 500=13.79% cpu : usr=0.28%, sys=2.02%, ctx=4498, 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=179253: Sat Aug 22 06:43:41 2026 read: IOPS=38, BW=155KiB/s (159kB/s)(4984KiB/32092msec) slat (usec): min=59, max=61499, avg=14595.15, stdev=8534.91 clat (msec): min=17, max=398, avg=190.34, stdev=53.02 lat (msec): min=35, max=416, avg=204.94, stdev=55.27 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 108], 10.00th=[ 125], 20.00th=[ 148], | 30.00th=[ 161], 40.00th=[ 174], 50.00th=[ 186], 60.00th=[ 203], | 70.00th=[ 218], 80.00th=[ 234], 90.00th=[ 259], 95.00th=[ 284], | 99.00th=[ 317], 99.50th=[ 330], 99.90th=[ 351], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 85, max= 251, per=25.05%, avg=155.29, stdev=37.32, samples=63 iops : min= 21, max= 62, avg=38.35, stdev= 9.29, samples=63 write: IOPS=40, BW=164KiB/s (168kB/s)(5256KiB/32092msec); 0 zone resets slat (usec): min=41, max=15334, avg=319.54, stdev=941.59 clat (msec): min=67, max=381, avg=195.45, stdev=49.49 lat (msec): min=68, max=381, avg=195.77, stdev=49.48 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 112], 10.00th=[ 133], 20.00th=[ 155], | 30.00th=[ 169], 40.00th=[ 184], 50.00th=[ 194], 60.00th=[ 207], | 70.00th=[ 222], 80.00th=[ 239], 90.00th=[ 262], 95.00th=[ 279], | 99.00th=[ 309], 99.50th=[ 326], 99.90th=[ 368], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 71, max= 288, per=25.29%, avg=163.37, stdev=46.56, samples=63 iops : min= 17, max= 72, avg=40.37, stdev=11.68, samples=63 lat (msec) : 20=0.04%, 50=0.31%, 100=2.58%, 250=83.32%, 500=13.75% cpu : usr=0.26%, sys=2.07%, ctx=4288, 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=179254: Sat Aug 22 06:43:41 2026 read: IOPS=39, BW=157KiB/s (160kB/s)(5060KiB/32297msec) slat (usec): min=2658, max=59235, avg=14763.14, stdev=8412.38 clat (msec): min=74, max=362, avg=189.68, stdev=51.94 lat (msec): min=81, max=397, avg=204.44, stdev=54.01 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 108], 10.00th=[ 125], 20.00th=[ 146], | 30.00th=[ 161], 40.00th=[ 176], 50.00th=[ 188], 60.00th=[ 199], | 70.00th=[ 215], 80.00th=[ 230], 90.00th=[ 262], 95.00th=[ 288], | 99.00th=[ 317], 99.50th=[ 338], 99.90th=[ 355], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 37, max= 259, per=25.13%, avg=155.81, stdev=41.85, samples=64 iops : min= 9, max= 64, avg=38.50, stdev=10.45, samples=64 write: IOPS=40, BW=160KiB/s (164kB/s)(5180KiB/32297msec); 0 zone resets slat (usec): min=43, max=21409, avg=333.18, stdev=969.65 clat (msec): min=78, max=341, avg=196.25, stdev=49.31 lat (msec): min=78, max=341, avg=196.59, stdev=49.35 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 117], 10.00th=[ 134], 20.00th=[ 155], | 30.00th=[ 171], 40.00th=[ 184], 50.00th=[ 194], 60.00th=[ 205], | 70.00th=[ 218], 80.00th=[ 236], 90.00th=[ 262], 95.00th=[ 288], | 99.00th=[ 317], 99.50th=[ 326], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 53, max= 251, per=24.68%, avg=159.41, stdev=43.61, samples=64 iops : min= 13, max= 62, avg=39.39, stdev=10.93, samples=64 lat (msec) : 100=2.11%, 250=84.49%, 500=13.40% cpu : usr=0.28%, sys=2.16%, ctx=4291, 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=621KiB/s (636kB/s), 154KiB/s-157KiB/s (158kB/s-160kB/s), io=19.6MiB (20.5MB), run=32092-32316msec WRITE: bw=646KiB/s (662kB/s), 160KiB/s-164KiB/s (164kB/s-168kB/s), io=20.4MiB (21.4MB), run=32092-32316msec 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=179263: Sat Aug 22 06:43:52 2026 read: IOPS=2, BW=90.1MiB/s (94.5MB/s)(40.0MiB/444msec) slat (nsec): min=31043k, max=31043k, avg=31043013.00, stdev= 0.00 clat (nsec): min=399745k, max=399745k, avg=399745326.00, stdev= 0.00 lat (nsec): min=430793k, max=430793k, avg=430792929.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.26%, ctx=5, 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=90.1MiB/s (94.5MB/s), 90.1MiB/s-90.1MiB/s (94.5MB/s-94.5MB/s), io=40.0MiB (41.9MB), run=444-444msec 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