== sanity test 398c: run fio to test AIO ================= 08:12:35 (1789301555) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.604746 s, 69.4 MB/s osc.lustre-OST0000-osc-ffff97c6862df000.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=145614: Sun Sep 13 08:15:19 2026 write: IOPS=16, BW=67.7KiB/s (69.3kB/s)(10.0MiB/151332msec); 0 zone resets slat (usec): min=23, max=11124, avg=162.45, stdev=468.64 clat (msec): min=237, max=1861, avg=944.40, stdev=257.72 lat (msec): min=237, max=1861, avg=944.57, stdev=257.73 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 575], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1070], 80.00th=[ 1150], 90.00th=[ 1284], 95.00th=[ 1401], | 99.00th=[ 1653], 99.50th=[ 1737], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 254, per=25.21%, avg=68.07, stdev=34.17, samples=296 iops : min= 1, max= 63, avg=16.52, stdev= 8.58, samples=296 lat (msec) : 250=1.25%, 500=2.54%, 750=17.34%, 1000=40.98%, 2000=37.89% cpu : usr=0.05%, sys=0.22%, ctx=1613, 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=145615: Sun Sep 13 08:15:19 2026 write: IOPS=16, BW=67.6KiB/s (69.2kB/s)(10.0MiB/151524msec); 0 zone resets slat (usec): min=22, max=10264, avg=197.73, stdev=671.27 clat (msec): min=262, max=1817, avg=945.79, stdev=252.34 lat (msec): min=262, max=1818, avg=945.99, stdev=252.33 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 567], 10.00th=[ 667], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 995], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1267], 95.00th=[ 1385], | 99.00th=[ 1653], 99.50th=[ 1754], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 128, per=24.71%, avg=66.72, stdev=25.30, samples=301 iops : min= 1, max= 32, avg=16.18, stdev= 6.37, samples=301 lat (msec) : 500=3.16%, 750=18.05%, 1000=40.31%, 2000=38.48% cpu : usr=0.05%, sys=0.23%, ctx=1723, 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=145616: Sun Sep 13 08:15:19 2026 write: IOPS=16, BW=67.7KiB/s (69.4kB/s)(10.0MiB/151164msec); 0 zone resets slat (usec): min=22, max=10729, avg=167.80, stdev=528.81 clat (msec): min=178, max=1807, avg=944.07, stdev=258.50 lat (msec): min=178, max=1807, avg=944.24, stdev=258.50 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 567], 10.00th=[ 659], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 995], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1250], 95.00th=[ 1401], | 99.00th=[ 1653], 99.50th=[ 1687], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 245, per=25.21%, avg=68.06, stdev=31.33, samples=296 iops : min= 1, max= 61, avg=16.51, stdev= 7.88, samples=296 lat (msec) : 250=1.25%, 500=2.19%, 750=16.91%, 1000=40.59%, 2000=39.06% cpu : usr=0.05%, sys=0.22%, ctx=1424, 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=145617: Sun Sep 13 08:15:19 2026 write: IOPS=16, BW=67.6KiB/s (69.2kB/s)(10.0MiB/151447msec); 0 zone resets slat (usec): min=22, max=16077, avg=207.53, stdev=756.04 clat (msec): min=157, max=1807, avg=945.42, stdev=259.64 lat (msec): min=157, max=1807, avg=945.63, stdev=259.64 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 567], 10.00th=[ 659], 20.00th=[ 735], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1083], 80.00th=[ 1150], 90.00th=[ 1284], 95.00th=[ 1401], | 99.00th=[ 1670], 99.50th=[ 1754], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 182, per=24.88%, avg=67.17, stdev=25.93, samples=300 iops : min= 1, max= 45, avg=16.29, stdev= 6.51, samples=300 lat (msec) : 250=0.55%, 500=3.28%, 750=17.81%, 1000=39.45%, 2000=38.91% cpu : usr=0.06%, sys=0.25%, ctx=2076, 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=270KiB/s (277kB/s), 67.6KiB/s-67.7KiB/s (69.2kB/s-69.4kB/s), io=40.0MiB (41.9MB), run=151164-151524msec 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=145649: Sun Sep 13 08:17:24 2026 read: IOPS=11, BW=44.1KiB/s (45.2kB/s)(5048KiB/114484msec) slat (usec): min=3235, max=77549, avg=16349.35, stdev=9536.20 clat (msec): min=14, max=1073, avg=455.31, stdev=133.72 lat (msec): min=21, max=1105, avg=471.66, stdev=135.31 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 284], 10.00th=[ 321], 20.00th=[ 355], | 30.00th=[ 384], 40.00th=[ 409], 50.00th=[ 430], 60.00th=[ 456], | 70.00th=[ 493], 80.00th=[ 550], 90.00th=[ 642], 95.00th=[ 693], | 99.00th=[ 902], 99.50th=[ 995], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 120, per=24.88%, avg=43.54, stdev=20.45, samples=227 iops : min= 1, max= 30, avg=10.36, stdev= 5.15, samples=227 write: IOPS=11, BW=45.4KiB/s (46.4kB/s)(5192KiB/114484msec); 0 zone resets slat (usec): min=25, max=13293, avg=287.87, stdev=966.88 clat (msec): min=284, max=2210, avg=948.45, stdev=265.97 lat (msec): min=284, max=2210, avg=948.74, stdev=265.98 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 567], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 844], 50.00th=[ 911], 60.00th=[ 995], | 70.00th=[ 1070], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1418], | 99.00th=[ 1670], 99.50th=[ 1821], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 119, per=24.56%, avg=44.70, stdev=20.75, samples=227 iops : min= 1, max= 29, avg=10.65, stdev= 5.22, samples=227 lat (msec) : 20=0.08%, 50=0.04%, 100=0.20%, 250=0.74%, 500=35.20% lat (msec) : 750=23.79%, 1000=20.08%, 2000=19.73%, >=2000=0.16% cpu : usr=0.11%, sys=0.57%, ctx=3992, 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=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=145650: Sun Sep 13 08:17:24 2026 read: IOPS=10, BW=43.5KiB/s (44.5kB/s)(4976KiB/114379msec) slat (usec): min=55, max=57995, avg=16114.96, stdev=8816.68 clat (msec): min=18, max=1240, avg=452.82, stdev=144.25 lat (msec): min=18, max=1277, avg=468.94, stdev=146.04 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 275], 10.00th=[ 305], 20.00th=[ 342], | 30.00th=[ 380], 40.00th=[ 405], 50.00th=[ 426], 60.00th=[ 456], | 70.00th=[ 498], 80.00th=[ 542], 90.00th=[ 642], 95.00th=[ 709], | 99.00th=[ 986], 99.50th=[ 1045], 99.90th=[ 1116], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 103, per=24.96%, avg=43.67, stdev=21.33, samples=223 iops : min= 1, max= 25, avg=10.39, stdev= 5.34, samples=223 write: IOPS=11, BW=46.0KiB/s (47.1kB/s)(5264KiB/114379msec); 0 zone resets slat (usec): min=27, max=25285, avg=294.78, stdev=1191.03 clat (msec): min=179, max=2192, avg=945.56, stdev=280.61 lat (msec): min=179, max=2192, avg=945.85, stdev=280.65 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 542], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 902], 60.00th=[ 978], | 70.00th=[ 1070], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1452], | 99.00th=[ 1737], 99.50th=[ 1821], 99.90th=[ 2106], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 103, per=25.23%, avg=45.92, stdev=20.29, samples=224 iops : min= 1, max= 25, avg=10.96, stdev= 5.09, samples=224 lat (msec) : 20=0.04%, 50=0.23%, 100=0.16%, 250=1.17%, 500=34.69% lat (msec) : 750=23.20%, 1000=20.78%, 2000=19.61%, >=2000=0.12% cpu : usr=0.11%, sys=0.66%, ctx=4262, majf=0, minf=15 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=145651: Sun Sep 13 08:17:24 2026 read: IOPS=10, BW=43.5KiB/s (44.6kB/s)(4984KiB/114539msec) slat (usec): min=2841, max=74739, avg=16369.48, stdev=9384.40 clat (msec): min=8, max=1109, avg=451.79, stdev=138.01 lat (msec): min=22, max=1149, avg=468.17, stdev=140.04 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 271], 10.00th=[ 305], 20.00th=[ 351], | 30.00th=[ 380], 40.00th=[ 409], 50.00th=[ 435], 60.00th=[ 456], | 70.00th=[ 493], 80.00th=[ 542], 90.00th=[ 634], 95.00th=[ 701], | 99.00th=[ 953], 99.50th=[ 1011], 99.90th=[ 1070], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 119, per=24.93%, avg=43.62, stdev=21.08, samples=224 iops : min= 1, max= 29, avg=10.38, stdev= 5.30, samples=224 write: IOPS=11, BW=45.9KiB/s (46.0kB/s)(5256KiB/114539msec); 0 zone resets slat (usec): min=25, max=13077, avg=299.08, stdev=1021.17 clat (msec): min=178, max=2191, avg=946.48, stdev=268.81 lat (msec): min=178, max=2191, avg=946.78, stdev=268.87 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 550], 10.00th=[ 634], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1070], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1401], | 99.00th=[ 1737], 99.50th=[ 1804], 99.90th=[ 1938], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 103, per=24.96%, avg=45.43, stdev=19.78, samples=225 iops : min= 1, max= 25, avg=10.84, stdev= 4.95, samples=225 lat (msec) : 10=0.04%, 50=0.16%, 100=0.12%, 250=1.13%, 500=34.73% lat (msec) : 750=23.52%, 1000=20.39%, 2000=19.88%, >=2000=0.04% cpu : usr=0.09%, sys=0.68%, ctx=4394, 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=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=145652: Sun Sep 13 08:17:24 2026 read: IOPS=11, BW=44.5KiB/s (45.6kB/s)(5060KiB/113718msec) slat (usec): min=2975, max=75874, avg=16110.24, stdev=9286.43 clat (msec): min=29, max=1317, avg=452.07, stdev=140.79 lat (msec): min=40, max=1373, avg=468.19, stdev=142.65 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 351], | 30.00th=[ 380], 40.00th=[ 409], 50.00th=[ 426], 60.00th=[ 451], | 70.00th=[ 493], 80.00th=[ 542], 90.00th=[ 625], 95.00th=[ 701], | 99.00th=[ 986], 99.50th=[ 1070], 99.90th=[ 1217], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 111, per=25.32%, avg=44.30, stdev=19.45, samples=224 iops : min= 1, max= 27, avg=10.55, stdev= 4.90, samples=224 write: IOPS=11, BW=45.6KiB/s (46.6kB/s)(5180KiB/113718msec); 0 zone resets slat (usec): min=28, max=18076, avg=267.87, stdev=917.70 clat (msec): min=187, max=2263, avg=943.25, stdev=284.54 lat (msec): min=188, max=2263, avg=943.52, stdev=284.55 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 550], 10.00th=[ 625], 20.00th=[ 718], | 30.00th=[ 785], 40.00th=[ 835], 50.00th=[ 911], 60.00th=[ 986], | 70.00th=[ 1053], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1452], | 99.00th=[ 1787], 99.50th=[ 2072], 99.90th=[ 2140], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 111, per=24.68%, avg=44.92, stdev=19.37, samples=225 iops : min= 1, max= 27, avg=10.71, stdev= 4.86, samples=225 lat (msec) : 50=0.23%, 100=0.12%, 250=1.02%, 500=35.20%, 750=24.14% lat (msec) : 1000=20.16%, 2000=18.83%, >=2000=0.31% cpu : usr=0.10%, sys=0.60%, ctx=4243, 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=175KiB/s (179kB/s), 43.5KiB/s-44.5KiB/s (44.5kB/s-45.6kB/s), io=19.6MiB (20.5MB), run=113718-114539msec WRITE: bw=182KiB/s (187kB/s), 45.4KiB/s-46.0KiB/s (46.4kB/s-47.1kB/s), io=20.4MiB (21.4MB), run=113718-114539msec 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=145674: Sun Sep 13 08:17:38 2026 read: IOPS=1, BW=69.3MiB/s (72.7MB/s)(40.0MiB/577msec) slat (nsec): min=41932k, max=41932k, avg=41932304.00, stdev= 0.00 clat (nsec): min=510872k, max=510872k, avg=510871874.00, stdev= 0.00 lat (nsec): min=552810k, max=552810k, avg=552809601.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.74%, ctx=9, majf=0, minf=9 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=69.3MiB/s (72.7MB/s), 69.3MiB/s-69.3MiB/s (72.7MB/s-72.7MB/s), io=40.0MiB (41.9MB), run=577-577msec 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