== sanity test 398c: run fio to test AIO ================= 03:15:56 (1787123756) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.53588 s, 78.3 MB/s osc.lustre-OST0000-osc-ffff9542b1c18800.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=146041: Wed Aug 19 03:18:45 2026 write: IOPS=16, BW=64.4KiB/s (65.0kB/s)(10.0MiB/158981msec); 0 zone resets slat (usec): min=51, max=24115, avg=319.80, stdev=1116.49 clat (msec): min=178, max=2266, avg=992.35, stdev=297.11 lat (msec): min=178, max=2266, avg=992.67, stdev=297.13 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 531], 10.00th=[ 676], 20.00th=[ 793], | 30.00th=[ 860], 40.00th=[ 911], 50.00th=[ 969], 60.00th=[ 1020], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1368], 95.00th=[ 1569], | 99.00th=[ 1921], 99.50th=[ 1972], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 256, per=25.38%, avg=64.98, stdev=33.71, samples=310 iops : min= 1, max= 64, avg=15.76, stdev= 8.49, samples=310 lat (msec) : 250=0.62%, 500=3.67%, 750=10.78%, 1000=41.76%, 2000=42.81% lat (msec) : >=2000=0.35% cpu : usr=0.05%, sys=0.27%, ctx=2175, 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=146042: Wed Aug 19 03:18:45 2026 write: IOPS=16, BW=64.2KiB/s (65.8kB/s)(10.0MiB/159420msec); 0 zone resets slat (usec): min=50, max=23399, avg=326.98, stdev=1140.10 clat (msec): min=71, max=2575, avg=995.65, stdev=296.20 lat (msec): min=72, max=2575, avg=995.98, stdev=296.22 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 558], 10.00th=[ 684], 20.00th=[ 793], | 30.00th=[ 860], 40.00th=[ 911], 50.00th=[ 969], 60.00th=[ 1020], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1351], 95.00th=[ 1586], | 99.00th=[ 1938], 99.50th=[ 2005], 99.90th=[ 2106], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 7, max= 240, per=25.47%, avg=65.19, stdev=30.25, samples=309 iops : min= 1, max= 60, avg=15.82, stdev= 7.64, samples=309 lat (msec) : 100=0.04%, 250=0.08%, 500=3.95%, 750=10.74%, 1000=41.48% lat (msec) : 2000=43.24%, >=2000=0.47% cpu : usr=0.04%, sys=0.27%, ctx=2183, 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=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=146043: Wed Aug 19 03:18:45 2026 write: IOPS=16, BW=64.4KiB/s (65.0kB/s)(10.0MiB/158937msec); 0 zone resets slat (usec): min=50, max=23137, avg=306.87, stdev=1012.05 clat (msec): min=104, max=2898, avg=992.48, stdev=296.22 lat (msec): min=104, max=2900, avg=992.80, stdev=296.21 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 531], 10.00th=[ 684], 20.00th=[ 793], | 30.00th=[ 860], 40.00th=[ 911], 50.00th=[ 969], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1351], 95.00th=[ 1552], | 99.00th=[ 1888], 99.50th=[ 1989], 99.90th=[ 2165], 99.95th=[ 2802], | 99.99th=[ 2903] bw ( KiB/s): min= 7, max= 200, per=25.21%, avg=64.53, stdev=33.60, samples=312 iops : min= 1, max= 50, avg=15.65, stdev= 8.42, samples=312 lat (msec) : 250=0.39%, 500=4.18%, 750=9.38%, 1000=42.30%, 2000=43.32% lat (msec) : >=2000=0.43% cpu : usr=0.04%, sys=0.27%, ctx=2054, 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=146044: Wed Aug 19 03:18:45 2026 write: IOPS=16, BW=64.3KiB/s (65.8kB/s)(10.0MiB/159286msec); 0 zone resets slat (usec): min=50, max=22104, avg=343.24, stdev=1050.32 clat (msec): min=120, max=2305, avg=994.23, stdev=295.91 lat (msec): min=120, max=2305, avg=994.58, stdev=295.88 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 558], 10.00th=[ 709], 20.00th=[ 793], | 30.00th=[ 852], 40.00th=[ 911], 50.00th=[ 961], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1351], 95.00th=[ 1569], | 99.00th=[ 1955], 99.50th=[ 2005], 99.90th=[ 2265], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 216, per=24.89%, avg=63.72, stdev=29.38, samples=316 iops : min= 1, max= 54, avg=15.45, stdev= 7.37, samples=316 lat (msec) : 250=0.66%, 500=3.28%, 750=9.65%, 1000=43.95%, 2000=41.99% lat (msec) : >=2000=0.47% cpu : usr=0.05%, sys=0.29%, ctx=2539, 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=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=257KiB/s (263kB/s), 64.2KiB/s-64.4KiB/s (65.8kB/s-65.0kB/s), io=40.0MiB (41.9MB), run=158937-159420msec 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=146076: Wed Aug 19 03:20:52 2026 read: IOPS=10, BW=43.1KiB/s (44.1kB/s)(5048KiB/117180msec) slat (usec): min=65, max=87576, avg=15090.63, stdev=8756.71 clat (msec): min=28, max=1236, avg=459.19, stdev=165.23 lat (msec): min=46, max=1249, avg=474.29, stdev=167.81 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 271], 10.00th=[ 300], 20.00th=[ 334], | 30.00th=[ 368], 40.00th=[ 397], 50.00th=[ 426], 60.00th=[ 460], | 70.00th=[ 506], 80.00th=[ 575], 90.00th=[ 693], 95.00th=[ 768], | 99.00th=[ 995], 99.50th=[ 1167], 99.90th=[ 1217], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 104, per=25.33%, avg=43.07, stdev=21.15, samples=229 iops : min= 1, max= 26, avg=10.26, stdev= 5.31, samples=229 write: IOPS=11, BW=44.3KiB/s (45.4kB/s)(5192KiB/117180msec); 0 zone resets slat (usec): min=57, max=31724, avg=476.49, stdev=1379.15 clat (msec): min=134, max=2055, avg=981.76, stdev=322.43 lat (msec): min=134, max=2055, avg=982.24, stdev=322.40 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 558], 10.00th=[ 625], 20.00th=[ 709], | 30.00th=[ 776], 40.00th=[ 844], 50.00th=[ 919], 60.00th=[ 1003], | 70.00th=[ 1116], 80.00th=[ 1250], 90.00th=[ 1469], 95.00th=[ 1603], | 99.00th=[ 1821], 99.50th=[ 1938], 99.90th=[ 2022], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 104, per=24.79%, avg=43.88, stdev=19.35, samples=231 iops : min= 1, max= 26, avg=10.46, stdev= 4.88, samples=231 lat (msec) : 50=0.04%, 100=0.59%, 250=1.29%, 500=32.89%, 750=24.26% lat (msec) : 1000=20.12%, 2000=20.66%, >=2000=0.16% cpu : usr=0.09%, sys=0.68%, ctx=4571, 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=146077: Wed Aug 19 03:20:52 2026 read: IOPS=10, BW=42.2KiB/s (43.2kB/s)(4976KiB/118003msec) slat (usec): min=2732, max=86397, avg=14922.12, stdev=8544.54 clat (msec): min=22, max=1221, avg=456.04, stdev=151.56 lat (msec): min=30, max=1237, avg=470.97, stdev=153.98 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 279], 10.00th=[ 305], 20.00th=[ 338], | 30.00th=[ 372], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 460], | 70.00th=[ 502], 80.00th=[ 558], 90.00th=[ 651], 95.00th=[ 768], | 99.00th=[ 919], 99.50th=[ 978], 99.90th=[ 1200], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7, max= 103, per=25.24%, avg=42.90, stdev=21.86, samples=227 iops : min= 1, max= 25, avg=10.22, stdev= 5.50, samples=227 write: IOPS=11, BW=44.6KiB/s (45.7kB/s)(5264KiB/118003msec); 0 zone resets slat (usec): min=56, max=12718, avg=423.56, stdev=909.78 clat (msec): min=365, max=2102, avg=986.19, stdev=313.62 lat (msec): min=366, max=2103, avg=986.61, stdev=313.65 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 592], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 785], 40.00th=[ 844], 50.00th=[ 911], 60.00th=[ 995], | 70.00th=[ 1099], 80.00th=[ 1250], 90.00th=[ 1469], 95.00th=[ 1603], | 99.00th=[ 1787], 99.50th=[ 1938], 99.90th=[ 2072], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 111, per=25.42%, avg=44.99, stdev=20.53, samples=229 iops : min= 1, max= 27, avg=10.74, stdev= 5.15, samples=229 lat (msec) : 50=0.12%, 100=0.27%, 250=0.70%, 500=33.55%, 750=23.75% lat (msec) : 1000=21.09%, 2000=20.27%, >=2000=0.23% cpu : usr=0.09%, sys=0.68%, ctx=4716, 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=146078: Wed Aug 19 03:20:52 2026 read: IOPS=10, BW=42.3KiB/s (43.3kB/s)(4984KiB/117953msec) slat (msec): min=3, max=109, avg=15.01, stdev= 8.86 clat (msec): min=56, max=1249, avg=458.63, stdev=153.27 lat (msec): min=67, max=1276, avg=473.64, stdev=155.57 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 271], 10.00th=[ 300], 20.00th=[ 342], | 30.00th=[ 372], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 464], | 70.00th=[ 502], 80.00th=[ 567], 90.00th=[ 659], 95.00th=[ 776], | 99.00th=[ 944], 99.50th=[ 995], 99.90th=[ 1217], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 112, per=25.16%, avg=42.76, stdev=22.91, samples=229 iops : min= 1, max= 28, avg=10.18, stdev= 5.79, samples=229 write: IOPS=11, BW=44.6KiB/s (45.6kB/s)(5256KiB/117953msec); 0 zone resets slat (usec): min=57, max=32392, avg=485.19, stdev=1609.74 clat (msec): min=360, max=2072, avg=983.98, stdev=309.24 lat (msec): min=361, max=2072, avg=984.47, stdev=309.26 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 584], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 785], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 1011], | 70.00th=[ 1083], 80.00th=[ 1234], 90.00th=[ 1452], 95.00th=[ 1603], | 99.00th=[ 1787], 99.50th=[ 1921], 99.90th=[ 2039], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7, max= 103, per=24.94%, avg=44.14, stdev=20.67, samples=232 iops : min= 1, max= 25, avg=10.53, stdev= 5.19, samples=232 lat (msec) : 100=0.23%, 250=1.02%, 500=33.01%, 750=24.45%, 1000=20.04% lat (msec) : 2000=21.09%, >=2000=0.16% cpu : usr=0.08%, sys=0.71%, ctx=4843, 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=146079: Wed Aug 19 03:20:52 2026 read: IOPS=10, BW=42.9KiB/s (43.9kB/s)(5060KiB/117952msec) slat (usec): min=3023, max=90631, avg=15180.69, stdev=9218.10 clat (msec): min=4, max=1210, avg=461.74, stdev=156.62 lat (msec): min=21, max=1245, avg=476.93, stdev=159.09 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 284], 10.00th=[ 305], 20.00th=[ 342], | 30.00th=[ 372], 40.00th=[ 397], 50.00th=[ 422], 60.00th=[ 460], | 70.00th=[ 502], 80.00th=[ 567], 90.00th=[ 676], 95.00th=[ 785], | 99.00th=[ 995], 99.50th=[ 1011], 99.90th=[ 1200], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7, max= 104, per=25.71%, avg=43.71, stdev=20.94, samples=227 iops : min= 1, max= 26, avg=10.42, stdev= 5.28, samples=227 write: IOPS=10, BW=43.9KiB/s (44.0kB/s)(5180KiB/117952msec); 0 zone resets slat (usec): min=59, max=22122, avg=456.11, stdev=1173.52 clat (msec): min=416, max=2126, avg=987.21, stdev=308.34 lat (msec): min=416, max=2126, avg=987.67, stdev=308.38 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 592], 10.00th=[ 642], 20.00th=[ 735], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 1011], | 70.00th=[ 1099], 80.00th=[ 1234], 90.00th=[ 1435], 95.00th=[ 1603], | 99.00th=[ 1821], 99.50th=[ 1938], 99.90th=[ 2056], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 95, per=24.64%, avg=43.61, stdev=18.84, samples=232 iops : min= 1, max= 23, avg=10.40, stdev= 4.72, samples=232 lat (msec) : 10=0.04%, 20=0.04%, 100=0.08%, 250=0.66%, 500=34.45% lat (msec) : 750=22.66%, 1000=20.98%, 2000=20.98%, >=2000=0.12% cpu : usr=0.10%, sys=0.70%, ctx=4745, 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=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=170KiB/s (174kB/s), 42.2KiB/s-43.1KiB/s (43.2kB/s-44.1kB/s), io=19.6MiB (20.5MB), run=117180-118003msec WRITE: bw=177KiB/s (181kB/s), 43.9KiB/s-44.6KiB/s (44.0kB/s-45.7kB/s), io=20.4MiB (21.4MB), run=117180-118003msec 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=146100: Wed Aug 19 03:21:02 2026 read: IOPS=2, BW=98.0MiB/s (103MB/s)(40.0MiB/408msec) slat (nsec): min=29297k, max=29297k, avg=29297440.00, stdev= 0.00 clat (nsec): min=352411k, max=352411k, avg=352411083.00, stdev= 0.00 lat (nsec): min=381714k, max=381714k, avg=381713540.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.19%, ctx=5, 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=98.0MiB/s (103MB/s), 98.0MiB/s-98.0MiB/s (103MB/s-103MB/s), io=40.0MiB (41.9MB), run=408-408msec 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