== sanity test 398c: run fio to test AIO ================= 15:59:03 (1787342343) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.542823 s, 77.3 MB/s osc.lustre-OST0000-osc-ffff905548819000.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=145045: Fri Aug 21 16:02:24 2026 write: IOPS=13, BW=54.1KiB/s (55.4kB/s)(10.0MiB/189411msec); 0 zone resets slat (usec): min=22, max=22777, avg=207.03, stdev=1011.73 clat (msec): min=420, max=2856, avg=1182.66, stdev=382.14 lat (msec): min=421, max=2856, avg=1182.87, stdev=382.13 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 667], 10.00th=[ 768], 20.00th=[ 869], | 30.00th=[ 936], 40.00th=[ 1028], 50.00th=[ 1116], 60.00th=[ 1217], | 70.00th=[ 1334], 80.00th=[ 1502], 90.00th=[ 1653], 95.00th=[ 1888], | 99.00th=[ 2400], 99.50th=[ 2567], 99.90th=[ 2735], 99.95th=[ 2836], | 99.99th=[ 2869] bw ( KiB/s): min= 7, max= 128, per=25.95%, avg=56.04, stdev=31.51, samples=359 iops : min= 1, max= 32, avg=13.53, stdev= 7.93, samples=359 lat (msec) : 500=0.62%, 750=7.97%, 1000=28.40%, 2000=59.22%, >=2000=3.79% cpu : usr=0.04%, sys=0.18%, ctx=1535, 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=145046: Fri Aug 21 16:02:24 2026 write: IOPS=13, BW=54.1KiB/s (55.4kB/s)(10.0MiB/189408msec); 0 zone resets slat (usec): min=21, max=18169, avg=195.99, stdev=764.89 clat (msec): min=428, max=2848, avg=1182.46, stdev=385.69 lat (msec): min=428, max=2848, avg=1182.66, stdev=385.70 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 701], 10.00th=[ 768], 20.00th=[ 869], | 30.00th=[ 936], 40.00th=[ 1028], 50.00th=[ 1116], 60.00th=[ 1217], | 70.00th=[ 1318], 80.00th=[ 1485], 90.00th=[ 1687], 95.00th=[ 1938], | 99.00th=[ 2400], 99.50th=[ 2534], 99.90th=[ 2702], 99.95th=[ 2735], | 99.99th=[ 2836] bw ( KiB/s): min= 7, max= 128, per=26.53%, avg=57.30, stdev=31.77, samples=351 iops : min= 1, max= 32, avg=13.84, stdev= 7.97, samples=351 lat (msec) : 500=0.39%, 750=8.05%, 1000=28.01%, 2000=59.38%, >=2000=4.18% cpu : usr=0.03%, sys=0.17%, ctx=1254, 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=145047: Fri Aug 21 16:02:24 2026 write: IOPS=13, BW=54.1KiB/s (55.4kB/s)(10.0MiB/189238msec); 0 zone resets slat (usec): min=22, max=22992, avg=216.37, stdev=976.77 clat (msec): min=402, max=2863, avg=1181.27, stdev=377.10 lat (msec): min=403, max=2863, avg=1181.49, stdev=377.11 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 676], 10.00th=[ 776], 20.00th=[ 860], | 30.00th=[ 944], 40.00th=[ 1036], 50.00th=[ 1116], 60.00th=[ 1234], | 70.00th=[ 1334], 80.00th=[ 1469], 90.00th=[ 1653], 95.00th=[ 1888], | 99.00th=[ 2400], 99.50th=[ 2500], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 7, max= 256, per=26.70%, avg=57.67, stdev=30.61, samples=349 iops : min= 1, max= 64, avg=13.94, stdev= 7.71, samples=349 lat (msec) : 500=0.78%, 750=7.77%, 1000=27.93%, 2000=60.12%, >=2000=3.40% cpu : usr=0.04%, sys=0.20%, ctx=1658, 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=145048: Fri Aug 21 16:02:24 2026 write: IOPS=13, BW=54.2KiB/s (55.5kB/s)(10.0MiB/189067msec); 0 zone resets slat (usec): min=21, max=50986, avg=234.84, stdev=1500.08 clat (msec): min=178, max=2778, avg=1180.89, stdev=388.57 lat (msec): min=179, max=2778, avg=1181.12, stdev=388.60 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 676], 10.00th=[ 760], 20.00th=[ 869], | 30.00th=[ 944], 40.00th=[ 1028], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1318], 80.00th=[ 1485], 90.00th=[ 1687], 95.00th=[ 1938], | 99.00th=[ 2433], 99.50th=[ 2534], 99.90th=[ 2735], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 7, max= 128, per=27.06%, avg=58.45, stdev=32.70, samples=344 iops : min= 1, max= 32, avg=14.14, stdev= 8.22, samples=344 lat (msec) : 250=0.08%, 500=1.25%, 750=8.32%, 1000=26.99%, 2000=58.95% lat (msec) : >=2000=4.41% cpu : usr=0.04%, sys=0.19%, ctx=1415, 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=216KiB/s (221kB/s), 54.1KiB/s-54.2KiB/s (55.4kB/s-55.5kB/s), io=40.0MiB (41.9MB), run=189067-189411msec 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=145096: Fri Aug 21 16:04:36 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5048KiB/116652msec) slat (usec): min=2365, max=69568, avg=15468.80, stdev=9328.70 clat (msec): min=19, max=1383, avg=445.15, stdev=140.31 lat (msec): min=32, max=1401, avg=460.63, stdev=142.37 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 266], 10.00th=[ 292], 20.00th=[ 334], | 30.00th=[ 368], 40.00th=[ 397], 50.00th=[ 430], 60.00th=[ 460], | 70.00th=[ 493], 80.00th=[ 550], 90.00th=[ 617], 95.00th=[ 693], | 99.00th=[ 894], 99.50th=[ 936], 99.90th=[ 1020], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7, max= 127, per=25.00%, avg=43.00, stdev=21.46, samples=230 iops : min= 1, max= 31, avg=10.23, stdev= 5.44, samples=230 write: IOPS=11, BW=44.5KiB/s (45.6kB/s)(5192KiB/116652msec); 0 zone resets slat (usec): min=29, max=14611, avg=289.85, stdev=1003.13 clat (msec): min=331, max=2404, avg=984.17, stdev=310.96 lat (msec): min=331, max=2405, avg=984.46, stdev=310.97 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 584], 10.00th=[ 642], 20.00th=[ 751], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 927], 60.00th=[ 995], | 70.00th=[ 1070], 80.00th=[ 1183], 90.00th=[ 1351], 95.00th=[ 1620], | 99.00th=[ 2089], 99.50th=[ 2165], 99.90th=[ 2366], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 119, per=24.72%, avg=44.24, stdev=20.91, samples=229 iops : min= 1, max= 29, avg=10.55, stdev= 5.26, samples=229 lat (msec) : 20=0.08%, 100=0.23%, 250=1.52%, 500=34.57%, 750=21.41% lat (msec) : 1000=22.11%, 2000=19.22%, >=2000=0.86% cpu : usr=0.09%, sys=0.52%, ctx=4257, 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=145097: Fri Aug 21 16:04:36 2026 read: IOPS=10, BW=42.7KiB/s (43.7kB/s)(4976KiB/116654msec) slat (usec): min=2546, max=70680, avg=15537.59, stdev=8824.57 clat (msec): min=8, max=1058, avg=447.70, stdev=135.59 lat (msec): min=13, max=1111, avg=463.25, stdev=137.69 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 264], 10.00th=[ 300], 20.00th=[ 338], | 30.00th=[ 372], 40.00th=[ 401], 50.00th=[ 435], 60.00th=[ 464], | 70.00th=[ 502], 80.00th=[ 542], 90.00th=[ 634], 95.00th=[ 701], | 99.00th=[ 902], 99.50th=[ 978], 99.90th=[ 1020], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 112, per=25.03%, avg=43.05, stdev=21.24, samples=226 iops : min= 1, max= 28, avg=10.25, stdev= 5.30, samples=226 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(5264KiB/116654msec); 0 zone resets slat (usec): min=23, max=7126, avg=200.35, stdev=491.57 clat (msec): min=408, max=2403, avg=975.60, stdev=307.25 lat (msec): min=408, max=2403, avg=975.80, stdev=307.26 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 718], | 30.00th=[ 802], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1200], 90.00th=[ 1334], 95.00th=[ 1519], | 99.00th=[ 2056], 99.50th=[ 2140], 99.90th=[ 2333], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 112, per=25.36%, avg=45.40, stdev=21.74, samples=226 iops : min= 1, max= 28, avg=10.85, stdev= 5.49, samples=226 lat (msec) : 10=0.04%, 100=0.08%, 250=2.03%, 500=32.81%, 750=24.34% lat (msec) : 1000=19.80%, 2000=20.20%, >=2000=0.70% cpu : usr=0.07%, sys=0.55%, ctx=4432, 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=145098: Fri Aug 21 16:04:36 2026 read: IOPS=10, BW=42.8KiB/s (43.8kB/s)(4984KiB/116568msec) slat (usec): min=40, max=57801, avg=15381.86, stdev=8991.46 clat (msec): min=12, max=1472, avg=436.75, stdev=137.34 lat (msec): min=15, max=1491, avg=452.13, stdev=139.85 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 253], 10.00th=[ 292], 20.00th=[ 334], | 30.00th=[ 368], 40.00th=[ 393], 50.00th=[ 426], 60.00th=[ 451], | 70.00th=[ 481], 80.00th=[ 531], 90.00th=[ 609], 95.00th=[ 684], | 99.00th=[ 844], 99.50th=[ 911], 99.90th=[ 1020], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7, max= 112, per=24.96%, avg=42.93, stdev=21.83, samples=228 iops : min= 1, max= 28, avg=10.22, stdev= 5.50, samples=228 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(5256KiB/116568msec); 0 zone resets slat (usec): min=24, max=26294, avg=306.95, stdev=1300.15 clat (msec): min=296, max=2595, avg=988.22, stdev=323.59 lat (msec): min=296, max=2595, avg=988.53, stdev=323.56 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 584], 10.00th=[ 642], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 1003], | 70.00th=[ 1070], 80.00th=[ 1200], 90.00th=[ 1334], 95.00th=[ 1586], | 99.00th=[ 2198], 99.50th=[ 2232], 99.90th=[ 2366], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 96, per=25.06%, avg=44.86, stdev=19.14, samples=228 iops : min= 1, max= 24, avg=10.71, stdev= 4.81, samples=228 lat (msec) : 20=0.04%, 50=0.08%, 100=0.23%, 250=1.99%, 500=34.69% lat (msec) : 750=20.82%, 1000=21.56%, 2000=19.41%, >=2000=1.17% cpu : usr=0.10%, sys=0.61%, ctx=4603, 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=145099: Fri Aug 21 16:04:36 2026 read: IOPS=10, BW=43.4KiB/s (44.4kB/s)(5060KiB/116649msec) slat (usec): min=2190, max=65955, avg=15068.40, stdev=8984.15 clat (msec): min=21, max=1020, avg=438.36, stdev=131.11 lat (msec): min=30, max=1065, avg=453.43, stdev=133.49 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 264], 10.00th=[ 300], 20.00th=[ 338], | 30.00th=[ 368], 40.00th=[ 397], 50.00th=[ 426], 60.00th=[ 451], | 70.00th=[ 489], 80.00th=[ 527], 90.00th=[ 609], 95.00th=[ 684], | 99.00th=[ 852], 99.50th=[ 919], 99.90th=[ 986], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 111, per=25.75%, avg=44.29, stdev=21.79, samples=224 iops : min= 1, max= 27, avg=10.56, stdev= 5.49, samples=224 write: IOPS=11, BW=44.4KiB/s (45.5kB/s)(5180KiB/116649msec); 0 zone resets slat (usec): min=26, max=15220, avg=234.80, stdev=802.14 clat (msec): min=457, max=2402, avg=993.12, stdev=315.27 lat (msec): min=457, max=2402, avg=993.36, stdev=315.31 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 575], 10.00th=[ 642], 20.00th=[ 751], | 30.00th=[ 827], 40.00th=[ 877], 50.00th=[ 944], 60.00th=[ 1011], | 70.00th=[ 1083], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1586], | 99.00th=[ 2106], 99.50th=[ 2232], 99.90th=[ 2333], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 96, per=24.75%, avg=44.31, stdev=19.76, samples=228 iops : min= 1, max= 24, avg=10.57, stdev= 5.02, samples=228 lat (msec) : 50=0.04%, 100=0.31%, 250=1.88%, 500=34.84%, 750=20.98% lat (msec) : 1000=21.02%, 2000=20.04%, >=2000=0.90% cpu : usr=0.09%, sys=0.59%, ctx=4270, 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=172KiB/s (176kB/s), 42.7KiB/s-43.4KiB/s (43.7kB/s-44.4kB/s), io=19.6MiB (20.5MB), run=116568-116654msec WRITE: bw=179KiB/s (183kB/s), 44.4KiB/s-45.1KiB/s (45.5kB/s-46.2kB/s), io=20.4MiB (21.4MB), run=116568-116654msec 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=145120: Fri Aug 21 16:04:47 2026 read: IOPS=2, BW=80.6MiB/s (84.6MB/s)(40.0MiB/496msec) slat (nsec): min=48111k, max=48111k, avg=48111342.00, stdev= 0.00 clat (nsec): min=409150k, max=409150k, avg=409150348.00, stdev= 0.00 lat (nsec): min=457266k, max=457266k, avg=457265575.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.63%, ctx=38, majf=0, minf=8 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=80.6MiB/s (84.6MB/s), 80.6MiB/s-80.6MiB/s (84.6MB/s-84.6MB/s), io=40.0MiB (41.9MB), run=496-496msec 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