== sanity test 398c: run fio to test AIO ================= 17:29:24 (1768256964) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.539709 s, 77.7 MB/s osc.lustre-OST0000-osc-ffff8d87581e7800.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=174589: Mon Jan 12 17:32:09 2026 write: IOPS=16, BW=66.4KiB/s (67.0kB/s)(10.0MiB/154247msec); 0 zone resets slat (usec): min=23, max=17587, avg=193.50, stdev=787.19 clat (msec): min=187, max=1760, avg=962.82, stdev=250.38 lat (msec): min=187, max=1760, avg=963.02, stdev=250.35 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 542], 10.00th=[ 676], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 911], 50.00th=[ 961], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1150], 90.00th=[ 1250], 95.00th=[ 1385], | 99.00th=[ 1620], 99.50th=[ 1703], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 15, max= 255, per=24.96%, avg=66.14, stdev=28.65, samples=305 iops : min= 3, max= 63, avg=16.12, stdev= 7.17, samples=305 lat (msec) : 250=0.66%, 500=3.12%, 750=13.71%, 1000=38.67%, 2000=43.83% cpu : usr=0.04%, sys=0.23%, ctx=1916, 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=174590: Mon Jan 12 17:32:09 2026 write: IOPS=16, BW=66.4KiB/s (67.0kB/s)(10.0MiB/154246msec); 0 zone resets slat (usec): min=22, max=15938, avg=173.19, stdev=702.86 clat (msec): min=185, max=1764, avg=962.80, stdev=248.81 lat (msec): min=185, max=1765, avg=962.97, stdev=248.79 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 558], 10.00th=[ 684], 20.00th=[ 776], | 30.00th=[ 844], 40.00th=[ 902], 50.00th=[ 961], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1150], 90.00th=[ 1234], 95.00th=[ 1368], | 99.00th=[ 1653], 99.50th=[ 1737], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 255, per=25.72%, avg=68.17, stdev=31.14, samples=296 iops : min= 1, max= 63, avg=16.64, stdev= 7.79, samples=296 lat (msec) : 250=0.62%, 500=2.70%, 750=13.59%, 1000=39.22%, 2000=43.87% cpu : usr=0.04%, sys=0.19%, ctx=1641, 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=174591: Mon Jan 12 17:32:09 2026 write: IOPS=16, BW=66.5KiB/s (68.1kB/s)(10.0MiB/153879msec); 0 zone resets slat (usec): min=23, max=14141, avg=170.51, stdev=626.38 clat (msec): min=142, max=1827, avg=961.14, stdev=249.59 lat (msec): min=142, max=1827, avg=961.31, stdev=249.58 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 558], 10.00th=[ 667], 20.00th=[ 768], | 30.00th=[ 844], 40.00th=[ 902], 50.00th=[ 961], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1133], 90.00th=[ 1267], 95.00th=[ 1368], | 99.00th=[ 1636], 99.50th=[ 1687], 99.90th=[ 1754], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 15, max= 200, per=24.95%, avg=66.12, stdev=26.33, samples=305 iops : min= 3, max= 50, avg=16.12, stdev= 6.58, samples=305 lat (msec) : 250=0.74%, 500=3.05%, 750=12.97%, 1000=39.22%, 2000=44.02% cpu : usr=0.05%, sys=0.22%, ctx=1795, 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=174592: Mon Jan 12 17:32:09 2026 write: IOPS=16, BW=66.4KiB/s (67.0kB/s)(10.0MiB/154246msec); 0 zone resets slat (usec): min=23, max=15716, avg=186.25, stdev=720.12 clat (msec): min=181, max=1756, avg=962.79, stdev=247.20 lat (msec): min=181, max=1756, avg=962.98, stdev=247.19 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 550], 10.00th=[ 676], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 902], 50.00th=[ 961], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1385], | 99.00th=[ 1636], 99.50th=[ 1687], 99.90th=[ 1720], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 175, per=24.80%, avg=65.71, stdev=26.81, samples=307 iops : min= 1, max= 43, avg=16.02, stdev= 6.69, samples=307 lat (msec) : 250=0.62%, 500=2.93%, 750=13.52%, 1000=39.45%, 2000=43.48% cpu : usr=0.05%, sys=0.21%, ctx=1709, 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=266KiB/s (272kB/s), 66.4KiB/s-66.5KiB/s (67.0kB/s-68.1kB/s), io=40.0MiB (41.9MB), run=153879-154247msec 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=174623: Mon Jan 12 17:33:53 2026 read: IOPS=13, BW=53.2KiB/s (54.4kB/s)(5048KiB/94934msec) slat (usec): min=2694, max=53051, avg=11996.72, stdev=6524.89 clat (msec): min=15, max=968, avg=365.21, stdev=116.71 lat (msec): min=26, max=977, avg=377.21, stdev=117.99 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 220], 10.00th=[ 243], 20.00th=[ 275], | 30.00th=[ 305], 40.00th=[ 330], 50.00th=[ 351], 60.00th=[ 372], | 70.00th=[ 401], 80.00th=[ 435], 90.00th=[ 498], 95.00th=[ 575], | 99.00th=[ 760], 99.50th=[ 860], 99.90th=[ 944], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 135, per=25.52%, avg=53.84, stdev=26.60, samples=184 iops : min= 1, max= 33, avg=13.05, stdev= 6.66, samples=184 write: IOPS=13, BW=54.7KiB/s (56.0kB/s)(5192KiB/94934msec); 0 zone resets slat (usec): min=25, max=14638, avg=209.91, stdev=639.59 clat (msec): min=260, max=2312, avg=800.29, stdev=304.13 lat (msec): min=260, max=2312, avg=800.50, stdev=304.13 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 447], 10.00th=[ 489], 20.00th=[ 558], | 30.00th=[ 617], 40.00th=[ 684], 50.00th=[ 751], 60.00th=[ 810], | 70.00th=[ 877], 80.00th=[ 986], 90.00th=[ 1183], 95.00th=[ 1334], | 99.00th=[ 2005], 99.50th=[ 2106], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 135, per=24.93%, avg=54.59, stdev=23.60, samples=187 iops : min= 1, max= 33, avg=13.24, stdev= 5.96, samples=187 lat (msec) : 20=0.04%, 50=0.20%, 100=0.12%, 250=5.62%, 500=44.14% lat (msec) : 750=23.87%, 1000=16.60%, 2000=8.91%, >=2000=0.51% cpu : usr=0.10%, sys=0.67%, ctx=4611, 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=174624: Mon Jan 12 17:33:53 2026 read: IOPS=13, BW=52.4KiB/s (53.6kB/s)(4976KiB/94989msec) slat (usec): min=2528, max=53049, avg=12402.82, stdev=6944.74 clat (msec): min=31, max=960, avg=369.96, stdev=117.75 lat (msec): min=43, max=970, avg=382.37, stdev=119.29 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 224], 10.00th=[ 247], 20.00th=[ 279], | 30.00th=[ 309], 40.00th=[ 330], 50.00th=[ 347], 60.00th=[ 376], | 70.00th=[ 405], 80.00th=[ 443], 90.00th=[ 514], 95.00th=[ 592], | 99.00th=[ 760], 99.50th=[ 869], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 135, per=24.59%, avg=51.89, stdev=25.96, samples=188 iops : min= 1, max= 33, avg=12.55, stdev= 6.55, samples=188 write: IOPS=13, BW=55.4KiB/s (56.7kB/s)(5264KiB/94989msec); 0 zone resets slat (usec): min=22, max=7832, avg=228.19, stdev=570.92 clat (msec): min=265, max=2294, avg=790.86, stdev=300.80 lat (msec): min=265, max=2294, avg=791.09, stdev=300.80 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 430], 10.00th=[ 489], 20.00th=[ 550], | 30.00th=[ 625], 40.00th=[ 684], 50.00th=[ 735], 60.00th=[ 802], | 70.00th=[ 877], 80.00th=[ 969], 90.00th=[ 1150], 95.00th=[ 1318], | 99.00th=[ 1921], 99.50th=[ 2140], 99.90th=[ 2198], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 135, per=25.03%, avg=54.82, stdev=24.40, samples=189 iops : min= 1, max= 33, avg=13.29, stdev= 6.15, samples=189 lat (msec) : 50=0.08%, 100=0.12%, 250=5.04%, 500=43.59%, 750=25.86% lat (msec) : 1000=16.17%, 2000=8.67%, >=2000=0.47% cpu : usr=0.10%, sys=0.67%, ctx=4439, 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=174625: Mon Jan 12 17:33:53 2026 read: IOPS=13, BW=52.5KiB/s (53.7kB/s)(4984KiB/94989msec) slat (usec): min=2847, max=63744, avg=12495.21, stdev=6907.32 clat (msec): min=9, max=906, avg=371.28, stdev=115.19 lat (msec): min=23, max=925, avg=383.78, stdev=116.34 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 222], 10.00th=[ 251], 20.00th=[ 284], | 30.00th=[ 309], 40.00th=[ 330], 50.00th=[ 355], 60.00th=[ 376], | 70.00th=[ 414], 80.00th=[ 451], 90.00th=[ 518], 95.00th=[ 592], | 99.00th=[ 726], 99.50th=[ 785], 99.90th=[ 885], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 144, per=24.71%, avg=52.13, stdev=26.15, samples=188 iops : min= 1, max= 36, avg=12.62, stdev= 6.60, samples=188 write: IOPS=13, BW=55.3KiB/s (56.7kB/s)(5256KiB/94989msec); 0 zone resets slat (usec): min=29, max=26445, avg=268.40, stdev=1097.78 clat (msec): min=136, max=2201, avg=790.02, stdev=302.47 lat (msec): min=136, max=2201, avg=790.29, stdev=302.47 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 439], 10.00th=[ 493], 20.00th=[ 550], | 30.00th=[ 625], 40.00th=[ 684], 50.00th=[ 735], 60.00th=[ 793], | 70.00th=[ 860], 80.00th=[ 969], 90.00th=[ 1150], 95.00th=[ 1334], | 99.00th=[ 1938], 99.50th=[ 2089], 99.90th=[ 2165], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 111, per=25.07%, avg=54.90, stdev=22.41, samples=188 iops : min= 1, max= 27, avg=13.31, stdev= 5.63, samples=188 lat (msec) : 10=0.04%, 20=0.08%, 100=0.16%, 250=4.80%, 500=43.59% lat (msec) : 750=26.60%, 1000=15.62%, 2000=8.59%, >=2000=0.51% cpu : usr=0.09%, sys=0.62%, ctx=4746, 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=174626: Mon Jan 12 17:33:53 2026 read: IOPS=13, BW=53.6KiB/s (54.9kB/s)(5060KiB/94410msec) slat (usec): min=49, max=50959, avg=12117.82, stdev=6908.63 clat (msec): min=13, max=907, avg=362.61, stdev=115.87 lat (msec): min=14, max=922, avg=374.73, stdev=117.62 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 220], 10.00th=[ 243], 20.00th=[ 279], | 30.00th=[ 305], 40.00th=[ 326], 50.00th=[ 347], 60.00th=[ 368], | 70.00th=[ 401], 80.00th=[ 443], 90.00th=[ 506], 95.00th=[ 575], | 99.00th=[ 743], 99.50th=[ 793], 99.90th=[ 877], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 120, per=25.54%, avg=53.89, stdev=25.92, samples=185 iops : min= 1, max= 30, avg=13.06, stdev= 6.54, samples=185 write: IOPS=13, BW=54.9KiB/s (56.2kB/s)(5180KiB/94410msec); 0 zone resets slat (usec): min=35, max=23133, avg=278.96, stdev=1094.16 clat (msec): min=125, max=2202, avg=799.41, stdev=303.90 lat (msec): min=126, max=2202, avg=799.70, stdev=303.91 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 447], 10.00th=[ 498], 20.00th=[ 567], | 30.00th=[ 625], 40.00th=[ 684], 50.00th=[ 751], 60.00th=[ 810], | 70.00th=[ 869], 80.00th=[ 978], 90.00th=[ 1167], 95.00th=[ 1351], | 99.00th=[ 1972], 99.50th=[ 2089], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 112, per=24.91%, avg=54.55, stdev=23.63, samples=186 iops : min= 1, max= 28, avg=13.23, stdev= 5.98, samples=186 lat (msec) : 20=0.12%, 50=0.39%, 100=0.20%, 250=5.35%, 500=43.40% lat (msec) : 750=25.12%, 1000=15.98%, 2000=9.06%, >=2000=0.39% cpu : usr=0.11%, sys=0.70%, ctx=5062, 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=211KiB/s (216kB/s), 52.4KiB/s-53.6KiB/s (53.6kB/s-54.9kB/s), io=19.6MiB (20.5MB), run=94410-94989msec WRITE: bw=220KiB/s (225kB/s), 54.7KiB/s-55.4KiB/s (56.0kB/s-56.7kB/s), io=20.4MiB (21.4MB), run=94410-94989msec 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=174645: Mon Jan 12 17:34:02 2026 read: IOPS=1, BW=79.8MiB/s (83.7MB/s)(40.0MiB/501msec) slat (nsec): min=32834k, max=32834k, avg=32833866.00, stdev= 0.00 clat (nsec): min=445349k, max=445349k, avg=445348951.00, stdev= 0.00 lat (nsec): min=478187k, max=478187k, avg=478187464.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.60%, ctx=43, 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=79.8MiB/s (83.7MB/s), 79.8MiB/s-79.8MiB/s (83.7MB/s-83.7MB/s), io=40.0MiB (41.9MB), run=501-501msec 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