== sanity test 398c: run fio to test AIO ================= 09:27:25 (1787318845) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.690827 s, 60.7 MB/s osc.lustre-OST0000-osc-ffff8b7e87f86000.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=145476: Fri Aug 21 09:30:11 2026 write: IOPS=16, BW=65.6KiB/s (67.1kB/s)(10.0MiB/156191msec); 0 zone resets slat (usec): min=39, max=19682, avg=213.39, stdev=645.67 clat (msec): min=196, max=2281, avg=974.87, stdev=298.85 lat (msec): min=196, max=2288, avg=975.08, stdev=298.86 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 600], 10.00th=[ 667], 20.00th=[ 760], | 30.00th=[ 827], 40.00th=[ 877], 50.00th=[ 927], 60.00th=[ 995], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1485], | 99.00th=[ 2005], 99.50th=[ 2072], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 252, per=26.09%, avg=68.35, stdev=35.50, samples=295 iops : min= 1, max= 63, avg=16.65, stdev= 8.93, samples=295 lat (msec) : 250=1.33%, 500=1.99%, 750=15.31%, 1000=42.23%, 2000=38.12% lat (msec) : >=2000=1.02% cpu : usr=0.04%, sys=0.25%, ctx=1957, 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=145477: Fri Aug 21 09:30:11 2026 write: IOPS=16, BW=65.6KiB/s (67.2kB/s)(10.0MiB/156139msec); 0 zone resets slat (usec): min=37, max=19077, avg=210.73, stdev=694.02 clat (msec): min=184, max=2313, avg=975.32, stdev=309.06 lat (msec): min=185, max=2314, avg=975.53, stdev=309.07 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 550], 10.00th=[ 651], 20.00th=[ 760], | 30.00th=[ 827], 40.00th=[ 877], 50.00th=[ 936], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1351], 95.00th=[ 1536], | 99.00th=[ 1938], 99.50th=[ 2056], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 256, per=26.34%, avg=69.01, stdev=35.49, samples=292 iops : min= 1, max= 64, avg=16.80, stdev= 8.88, samples=292 lat (msec) : 250=1.29%, 500=2.15%, 750=15.27%, 1000=40.00%, 2000=40.55% lat (msec) : >=2000=0.74% cpu : usr=0.04%, sys=0.25%, ctx=1742, 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=145478: Fri Aug 21 09:30:11 2026 write: IOPS=16, BW=65.6KiB/s (67.1kB/s)(10.0MiB/156196msec); 0 zone resets slat (usec): min=37, max=13096, avg=237.02, stdev=704.87 clat (msec): min=123, max=2340, avg=974.82, stdev=303.26 lat (msec): min=123, max=2340, avg=975.06, stdev=303.23 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 575], 10.00th=[ 659], 20.00th=[ 768], | 30.00th=[ 827], 40.00th=[ 877], 50.00th=[ 927], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1485], | 99.00th=[ 1938], 99.50th=[ 2106], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 213, per=25.05%, avg=65.64, stdev=30.27, samples=307 iops : min= 1, max= 53, avg=15.97, stdev= 7.58, samples=307 lat (msec) : 250=1.33%, 500=2.23%, 750=13.36%, 1000=43.24%, 2000=38.87% lat (msec) : >=2000=0.98% cpu : usr=0.04%, sys=0.26%, ctx=2148, 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=145479: Fri Aug 21 09:30:11 2026 write: IOPS=16, BW=65.5KiB/s (67.1kB/s)(10.0MiB/156250msec); 0 zone resets slat (usec): min=37, max=20879, avg=219.28, stdev=765.06 clat (msec): min=220, max=2346, avg=975.19, stdev=304.53 lat (msec): min=220, max=2346, avg=975.41, stdev=304.54 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 567], 10.00th=[ 667], 20.00th=[ 760], | 30.00th=[ 827], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 995], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1351], 95.00th=[ 1519], | 99.00th=[ 2022], 99.50th=[ 2089], 99.90th=[ 2265], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 252, per=25.31%, avg=66.31, stdev=30.27, samples=304 iops : min= 1, max= 63, avg=16.13, stdev= 7.60, samples=304 lat (msec) : 250=1.25%, 500=2.66%, 750=14.49%, 1000=42.19%, 2000=38.40% lat (msec) : >=2000=1.02% cpu : usr=0.04%, sys=0.24%, ctx=1655, 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=262KiB/s (268kB/s), 65.5KiB/s-65.6KiB/s (67.1kB/s-67.2kB/s), io=40.0MiB (41.9MB), run=156139-156250msec 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=145511: Fri Aug 21 09:32:17 2026 read: IOPS=10, BW=43.2KiB/s (44.2kB/s)(5048KiB/116827msec) slat (usec): min=2508, max=71516, avg=14810.39, stdev=8903.98 clat (msec): min=16, max=1029, avg=444.74, stdev=153.12 lat (msec): min=24, max=1063, avg=459.56, stdev=155.88 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 259], 10.00th=[ 292], 20.00th=[ 334], | 30.00th=[ 363], 40.00th=[ 384], 50.00th=[ 414], 60.00th=[ 443], | 70.00th=[ 485], 80.00th=[ 550], 90.00th=[ 651], 95.00th=[ 768], | 99.00th=[ 927], 99.50th=[ 986], 99.90th=[ 1020], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 112, per=25.27%, avg=43.21, stdev=23.00, samples=229 iops : min= 1, max= 28, avg=10.30, stdev= 5.77, samples=229 write: IOPS=11, BW=44.4KiB/s (45.5kB/s)(5192KiB/116827msec); 0 zone resets slat (usec): min=58, max=31509, avg=326.13, stdev=1468.89 clat (msec): min=302, max=2367, avg=988.93, stdev=362.36 lat (msec): min=302, max=2367, avg=989.26, stdev=362.41 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 502], 10.00th=[ 600], 20.00th=[ 709], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1099], 80.00th=[ 1250], 90.00th=[ 1485], 95.00th=[ 1737], | 99.00th=[ 2123], 99.50th=[ 2198], 99.90th=[ 2333], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 127, per=24.78%, avg=44.10, stdev=20.44, samples=230 iops : min= 1, max= 31, avg=10.53, stdev= 5.11, samples=230 lat (msec) : 20=0.04%, 50=0.16%, 100=0.16%, 250=1.76%, 500=36.41% lat (msec) : 750=20.27%, 1000=22.03%, 2000=18.36%, >=2000=0.82% cpu : usr=0.09%, sys=0.68%, ctx=5165, 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=145512: Fri Aug 21 09:32:17 2026 read: IOPS=10, BW=42.4KiB/s (43.5kB/s)(4976KiB/117235msec) slat (usec): min=2661, max=78944, avg=14327.94, stdev=8778.47 clat (msec): min=34, max=1088, avg=456.57, stdev=162.08 lat (msec): min=43, max=1125, avg=470.91, stdev=164.31 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 264], 10.00th=[ 300], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 393], 50.00th=[ 418], 60.00th=[ 447], | 70.00th=[ 489], 80.00th=[ 575], 90.00th=[ 693], 95.00th=[ 785], | 99.00th=[ 986], 99.50th=[ 1003], 99.90th=[ 1045], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 128, per=24.69%, avg=42.22, stdev=22.85, samples=230 iops : min= 1, max= 32, avg=10.05, stdev= 5.75, samples=230 write: IOPS=11, BW=44.9KiB/s (45.0kB/s)(5264KiB/117235msec); 0 zone resets slat (usec): min=41, max=29613, avg=278.82, stdev=928.64 clat (msec): min=107, max=2366, avg=977.02, stdev=346.76 lat (msec): min=107, max=2366, avg=977.30, stdev=346.76 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 510], 10.00th=[ 600], 20.00th=[ 718], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1070], 80.00th=[ 1234], 90.00th=[ 1452], 95.00th=[ 1687], | 99.00th=[ 2039], 99.50th=[ 2123], 99.90th=[ 2333], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 127, per=25.46%, avg=45.32, stdev=22.08, samples=228 iops : min= 1, max= 31, avg=10.83, stdev= 5.51, samples=228 lat (msec) : 50=0.08%, 100=0.08%, 250=1.60%, 500=35.39%, 750=20.82% lat (msec) : 1000=23.09%, 2000=18.40%, >=2000=0.55% cpu : usr=0.09%, sys=0.61%, ctx=4807, 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=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=145513: Fri Aug 21 09:32:17 2026 read: IOPS=10, BW=42.5KiB/s (43.6kB/s)(4984KiB/117136msec) slat (usec): min=2713, max=65512, avg=14507.42, stdev=8747.38 clat (msec): min=23, max=1020, avg=446.43, stdev=156.79 lat (msec): min=32, max=1049, avg=460.94, stdev=159.32 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 247], 10.00th=[ 288], 20.00th=[ 330], | 30.00th=[ 359], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 447], | 70.00th=[ 481], 80.00th=[ 550], 90.00th=[ 659], 95.00th=[ 776], | 99.00th=[ 961], 99.50th=[ 986], 99.90th=[ 1011], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 151, per=25.19%, avg=43.07, stdev=23.99, samples=227 iops : min= 1, max= 37, avg=10.27, stdev= 6.02, samples=227 write: IOPS=11, BW=44.9KiB/s (45.9kB/s)(5256KiB/117136msec); 0 zone resets slat (usec): min=47, max=15899, avg=273.32, stdev=720.14 clat (msec): min=287, max=2304, avg=986.31, stdev=351.00 lat (msec): min=287, max=2305, avg=986.59, stdev=351.00 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 510], 10.00th=[ 609], 20.00th=[ 709], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1083], 80.00th=[ 1250], 90.00th=[ 1485], 95.00th=[ 1687], | 99.00th=[ 2089], 99.50th=[ 2198], 99.90th=[ 2265], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 119, per=25.17%, avg=44.81, stdev=22.19, samples=228 iops : min= 1, max= 29, avg=10.71, stdev= 5.56, samples=228 lat (msec) : 50=0.12%, 100=0.12%, 250=2.42%, 500=35.23%, 750=19.80% lat (msec) : 1000=22.77%, 2000=18.95%, >=2000=0.59% cpu : usr=0.08%, sys=0.67%, ctx=4705, 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=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=145514: Fri Aug 21 09:32:17 2026 read: IOPS=10, BW=43.7KiB/s (44.8kB/s)(5060KiB/115668msec) slat (usec): min=89, max=84276, avg=14899.64, stdev=9224.59 clat (msec): min=16, max=1616, avg=449.75, stdev=174.31 lat (msec): min=29, max=1637, avg=464.66, stdev=177.27 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 241], 10.00th=[ 284], 20.00th=[ 326], | 30.00th=[ 359], 40.00th=[ 384], 50.00th=[ 418], 60.00th=[ 447], | 70.00th=[ 489], 80.00th=[ 567], 90.00th=[ 693], 95.00th=[ 776], | 99.00th=[ 1003], 99.50th=[ 1070], 99.90th=[ 1435], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 127, per=26.24%, avg=44.86, stdev=21.51, samples=221 iops : min= 1, max= 31, avg=10.72, stdev= 5.36, samples=221 write: IOPS=11, BW=44.8KiB/s (45.9kB/s)(5180KiB/115668msec); 0 zone resets slat (usec): min=41, max=37977, avg=360.50, stdev=1489.98 clat (msec): min=165, max=2292, avg=973.64, stdev=354.79 lat (msec): min=165, max=2292, avg=974.01, stdev=354.83 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 523], 10.00th=[ 600], 20.00th=[ 693], | 30.00th=[ 768], 40.00th=[ 835], 50.00th=[ 902], 60.00th=[ 969], | 70.00th=[ 1070], 80.00th=[ 1234], 90.00th=[ 1452], 95.00th=[ 1720], | 99.00th=[ 2072], 99.50th=[ 2198], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 96, per=25.39%, avg=45.20, stdev=21.97, samples=224 iops : min= 1, max= 24, avg=10.81, stdev= 5.51, samples=224 lat (msec) : 20=0.04%, 50=0.27%, 100=0.39%, 250=2.30%, 500=35.00% lat (msec) : 750=21.60%, 1000=21.13%, 2000=18.44%, >=2000=0.82% cpu : usr=0.09%, sys=0.62%, ctx=4823, 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=171KiB/s (175kB/s), 42.4KiB/s-43.7KiB/s (43.5kB/s-44.8kB/s), io=19.6MiB (20.5MB), run=115668-117235msec WRITE: bw=178KiB/s (182kB/s), 44.4KiB/s-44.9KiB/s (45.5kB/s-45.0kB/s), io=20.4MiB (21.4MB), run=115668-117235msec 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=145537: Fri Aug 21 09:32:26 2026 read: IOPS=2, BW=81.5MiB/s (85.4MB/s)(40.0MiB/491msec) slat (nsec): min=41287k, max=41287k, avg=41287015.00, stdev= 0.00 clat (nsec): min=414564k, max=414564k, avg=414563530.00, stdev= 0.00 lat (nsec): min=455857k, max=455857k, avg=455856590.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=1.02%, ctx=3, 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=81.5MiB/s (85.4MB/s), 81.5MiB/s-81.5MiB/s (85.4MB/s-85.4MB/s), io=40.0MiB (41.9MB), run=491-491msec 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