== sanity test 398c: run fio to test AIO ================= 20:26:46 (1787704006) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.375072 s, 112 MB/s osc.lustre-OST0000-osc-ffff986b49003800.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=180642: Tue Aug 25 20:27:20 2026 write: IOPS=106, BW=424KiB/s (434kB/s)(10.0MiB/24137msec); 0 zone resets slat (usec): min=28, max=9271, avg=168.42, stdev=523.39 clat (msec): min=21, max=249, avg=150.56, stdev=27.37 lat (msec): min=22, max=249, avg=150.73, stdev=27.35 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 109], 10.00th=[ 116], 20.00th=[ 130], | 30.00th=[ 136], 40.00th=[ 144], 50.00th=[ 150], 60.00th=[ 157], | 70.00th=[ 163], 80.00th=[ 171], 90.00th=[ 188], 95.00th=[ 197], | 99.00th=[ 224], 99.50th=[ 236], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 264, max= 616, per=24.94%, avg=422.94, stdev=64.33, samples=47 iops : min= 66, max= 154, avg=105.40, stdev=16.12, samples=47 lat (msec) : 50=0.08%, 100=2.93%, 250=96.99% cpu : usr=0.19%, sys=0.91%, ctx=2361, 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=180643: Tue Aug 25 20:27:20 2026 write: IOPS=106, BW=424KiB/s (434kB/s)(10.0MiB/24147msec); 0 zone resets slat (usec): min=28, max=15950, avg=172.61, stdev=593.15 clat (msec): min=24, max=250, avg=150.10, stdev=27.13 lat (msec): min=24, max=256, avg=150.27, stdev=27.13 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 109], 10.00th=[ 120], 20.00th=[ 129], | 30.00th=[ 136], 40.00th=[ 144], 50.00th=[ 148], 60.00th=[ 157], | 70.00th=[ 163], 80.00th=[ 171], 90.00th=[ 184], 95.00th=[ 199], | 99.00th=[ 218], 99.50th=[ 232], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 283, max= 517, per=24.90%, avg=422.26, stdev=55.27, samples=47 iops : min= 70, max= 129, avg=105.23, stdev=13.91, samples=47 lat (msec) : 50=0.20%, 100=3.63%, 250=96.02%, 500=0.16% cpu : usr=0.18%, sys=0.95%, ctx=2207, 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=180644: Tue Aug 25 20:27:20 2026 write: IOPS=106, BW=425KiB/s (435kB/s)(10.0MiB/24082msec); 0 zone resets slat (usec): min=27, max=8348, avg=129.28, stdev=385.27 clat (msec): min=54, max=271, avg=150.17, stdev=28.80 lat (msec): min=54, max=271, avg=150.30, stdev=28.79 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 106], 10.00th=[ 118], 20.00th=[ 128], | 30.00th=[ 136], 40.00th=[ 142], 50.00th=[ 150], 60.00th=[ 157], | 70.00th=[ 163], 80.00th=[ 174], 90.00th=[ 188], 95.00th=[ 201], | 99.00th=[ 218], 99.50th=[ 236], 99.90th=[ 249], 99.95th=[ 255], | 99.99th=[ 271] bw ( KiB/s): min= 303, max= 558, per=25.05%, avg=424.81, stdev=56.34, samples=47 iops : min= 75, max= 139, avg=105.87, stdev=14.13, samples=47 lat (msec) : 100=4.49%, 250=95.43%, 500=0.08% cpu : usr=0.12%, sys=0.80%, ctx=1783, 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=180645: Tue Aug 25 20:27:20 2026 write: IOPS=106, BW=425KiB/s (435kB/s)(10.0MiB/24111msec); 0 zone resets slat (usec): min=30, max=17076, avg=167.21, stdev=559.46 clat (msec): min=17, max=252, avg=150.31, stdev=28.79 lat (msec): min=18, max=252, avg=150.48, stdev=28.78 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 105], 10.00th=[ 118], 20.00th=[ 130], | 30.00th=[ 136], 40.00th=[ 142], 50.00th=[ 150], 60.00th=[ 157], | 70.00th=[ 163], 80.00th=[ 174], 90.00th=[ 186], 95.00th=[ 197], | 99.00th=[ 243], 99.50th=[ 247], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 253] bw ( KiB/s): min= 295, max= 560, per=25.01%, avg=424.17, stdev=60.04, samples=47 iops : min= 73, max= 140, avg=105.72, stdev=15.14, samples=47 lat (msec) : 20=0.12%, 50=0.16%, 100=3.71%, 250=95.98%, 500=0.04% cpu : usr=0.19%, sys=1.08%, ctx=2972, 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=1696KiB/s (1737kB/s), 424KiB/s-425KiB/s (434kB/s-435kB/s), io=40.0MiB (41.9MB), run=24082-24147msec 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=180658: Tue Aug 25 20:27:54 2026 read: IOPS=47, BW=191KiB/s (195kB/s)(5048KiB/26496msec) slat (usec): min=48, max=50589, avg=11558.46, stdev=6628.04 clat (msec): min=28, max=319, avg=157.05, stdev=41.19 lat (msec): min=46, max=329, avg=168.62, stdev=42.95 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 100], 10.00th=[ 110], 20.00th=[ 123], | 30.00th=[ 132], 40.00th=[ 142], 50.00th=[ 153], 60.00th=[ 163], | 70.00th=[ 174], 80.00th=[ 192], 90.00th=[ 213], 95.00th=[ 232], | 99.00th=[ 275], 99.50th=[ 292], 99.90th=[ 317], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 111, max= 276, per=25.12%, avg=189.88, stdev=37.91, samples=52 iops : min= 27, max= 69, avg=47.02, stdev= 9.55, samples=52 write: IOPS=48, BW=196KiB/s (201kB/s)(5192KiB/26496msec); 0 zone resets slat (usec): min=31, max=6049, avg=167.83, stdev=424.75 clat (msec): min=84, max=309, avg=161.19, stdev=38.49 lat (msec): min=84, max=309, avg=161.36, stdev=38.50 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 107], 10.00th=[ 114], 20.00th=[ 127], | 30.00th=[ 138], 40.00th=[ 148], 50.00th=[ 159], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 192], 90.00th=[ 213], 95.00th=[ 232], | 99.00th=[ 271], 99.50th=[ 284], 99.90th=[ 305], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 103, max= 310, per=24.85%, avg=195.79, stdev=48.70, samples=52 iops : min= 25, max= 77, avg=48.48, stdev=12.21, samples=52 lat (msec) : 50=0.08%, 100=3.83%, 250=93.55%, 500=2.54% cpu : usr=0.26%, sys=1.83%, ctx=4584, 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=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=180659: Tue Aug 25 20:27:54 2026 read: IOPS=47, BW=188KiB/s (193kB/s)(4976KiB/26456msec) slat (usec): min=2157, max=51353, avg=11646.73, stdev=6387.08 clat (msec): min=16, max=358, avg=156.41, stdev=41.89 lat (msec): min=21, max=404, avg=168.06, stdev=43.70 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 100], 10.00th=[ 108], 20.00th=[ 120], | 30.00th=[ 131], 40.00th=[ 142], 50.00th=[ 153], 60.00th=[ 161], | 70.00th=[ 174], 80.00th=[ 192], 90.00th=[ 215], 95.00th=[ 228], | 99.00th=[ 264], 99.50th=[ 288], 99.90th=[ 355], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 95, max= 318, per=24.80%, avg=187.52, stdev=46.22, samples=52 iops : min= 23, max= 79, avg=46.42, stdev=11.63, samples=52 write: IOPS=49, BW=199KiB/s (204kB/s)(5264KiB/26456msec); 0 zone resets slat (usec): min=36, max=9982, avg=189.88, stdev=549.93 clat (msec): min=65, max=310, avg=161.13, stdev=38.04 lat (msec): min=65, max=310, avg=161.32, stdev=38.03 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 109], 10.00th=[ 117], 20.00th=[ 128], | 30.00th=[ 138], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 178], 80.00th=[ 192], 90.00th=[ 211], 95.00th=[ 232], | 99.00th=[ 268], 99.50th=[ 284], 99.90th=[ 296], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 111, max= 312, per=25.27%, avg=199.12, stdev=47.43, samples=52 iops : min= 27, max= 78, avg=49.33, stdev=11.88, samples=52 lat (msec) : 20=0.04%, 100=3.71%, 250=93.98%, 500=2.27% cpu : usr=0.24%, sys=1.80%, ctx=4706, 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=180660: Tue Aug 25 20:27:54 2026 read: IOPS=47, BW=189KiB/s (193kB/s)(4984KiB/26423msec) slat (usec): min=25, max=74157, avg=11492.34, stdev=6544.50 clat (msec): min=25, max=367, avg=155.36, stdev=42.66 lat (msec): min=25, max=380, avg=166.85, stdev=44.32 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 97], 10.00th=[ 108], 20.00th=[ 120], | 30.00th=[ 131], 40.00th=[ 142], 50.00th=[ 153], 60.00th=[ 161], | 70.00th=[ 174], 80.00th=[ 188], 90.00th=[ 209], 95.00th=[ 230], | 99.00th=[ 279], 99.50th=[ 300], 99.90th=[ 351], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 79, max= 326, per=24.94%, avg=188.58, stdev=47.24, samples=52 iops : min= 19, max= 81, avg=46.71, stdev=11.88, samples=52 write: IOPS=49, BW=199KiB/s (204kB/s)(5256KiB/26423msec); 0 zone resets slat (usec): min=27, max=10648, avg=201.28, stdev=570.94 clat (msec): min=69, max=352, avg=162.99, stdev=40.94 lat (msec): min=69, max=352, avg=163.19, stdev=40.96 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 109], 10.00th=[ 116], 20.00th=[ 129], | 30.00th=[ 138], 40.00th=[ 146], 50.00th=[ 159], 60.00th=[ 171], | 70.00th=[ 182], 80.00th=[ 192], 90.00th=[ 215], 95.00th=[ 236], | 99.00th=[ 284], 99.50th=[ 313], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 103, max= 294, per=25.19%, avg=198.48, stdev=40.03, samples=52 iops : min= 25, max= 73, avg=49.13, stdev=10.06, samples=52 lat (msec) : 50=0.16%, 100=4.10%, 250=92.50%, 500=3.24% cpu : usr=0.35%, sys=1.85%, ctx=4620, 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=180661: Tue Aug 25 20:27:54 2026 read: IOPS=47, BW=191KiB/s (195kB/s)(5060KiB/26511msec) slat (usec): min=2500, max=48947, avg=11415.69, stdev=6130.80 clat (msec): min=21, max=299, avg=156.20, stdev=39.56 lat (msec): min=26, max=311, avg=167.62, stdev=41.10 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 99], 10.00th=[ 110], 20.00th=[ 122], | 30.00th=[ 133], 40.00th=[ 144], 50.00th=[ 153], 60.00th=[ 163], | 70.00th=[ 174], 80.00th=[ 188], 90.00th=[ 211], 95.00th=[ 230], | 99.00th=[ 264], 99.50th=[ 275], 99.90th=[ 296], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 95, max= 291, per=25.18%, avg=190.38, stdev=42.52, samples=52 iops : min= 23, max= 72, avg=47.12, stdev=10.66, samples=52 write: IOPS=48, BW=195KiB/s (200kB/s)(5180KiB/26511msec); 0 zone resets slat (usec): min=37, max=11885, avg=179.67, stdev=582.95 clat (msec): min=82, max=295, avg=161.90, stdev=38.64 lat (msec): min=82, max=295, avg=162.08, stdev=38.68 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 109], 10.00th=[ 115], 20.00th=[ 129], | 30.00th=[ 138], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 218], 95.00th=[ 232], | 99.00th=[ 266], 99.50th=[ 284], 99.90th=[ 288], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 103, max= 310, per=24.67%, avg=194.38, stdev=46.98, samples=52 iops : min= 25, max= 77, avg=48.15, stdev=11.80, samples=52 lat (msec) : 50=0.08%, 100=3.48%, 250=94.34%, 500=2.11% cpu : usr=0.25%, sys=1.76%, ctx=4854, 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=757KiB/s (775kB/s), 188KiB/s-191KiB/s (193kB/s-195kB/s), io=19.6MiB (20.5MB), run=26423-26511msec WRITE: bw=788KiB/s (807kB/s), 195KiB/s-199KiB/s (200kB/s-204kB/s), io=20.4MiB (21.4MB), run=26423-26511msec 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=180671: Tue Aug 25 20:28:03 2026 read: IOPS=2, BW=82.8MiB/s (86.8MB/s)(40.0MiB/483msec) slat (nsec): min=33156k, max=33156k, avg=33156397.00, stdev= 0.00 clat (nsec): min=419584k, max=419584k, avg=419584082.00, stdev= 0.00 lat (nsec): min=452745k, max=452745k, avg=452744893.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.49%, ctx=5, majf=0, minf=10 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=82.8MiB/s (86.8MB/s), 82.8MiB/s-82.8MiB/s (86.8MB/s-86.8MB/s), io=40.0MiB (41.9MB), run=483-483msec 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