== sanity test 398c: run fio to test AIO ================= 02:49:30 (1789454970) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.535444 s, 78.3 MB/s osc.lustre-OST0000-osc-ffff88e38b079800.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=179832: Tue Sep 15 02:50:07 2026 write: IOPS=96, BW=387KiB/s (396kB/s)(10.0MiB/26458msec); 0 zone resets slat (usec): min=27, max=13467, avg=252.78, stdev=824.34 clat (msec): min=27, max=286, avg=164.99, stdev=33.60 lat (msec): min=28, max=286, avg=165.25, stdev=33.63 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 113], 10.00th=[ 124], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 182], 80.00th=[ 197], 90.00th=[ 211], 95.00th=[ 226], | 99.00th=[ 251], 99.50th=[ 253], 99.90th=[ 255], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 253, max= 510, per=24.98%, avg=385.65, stdev=56.20, samples=52 iops : min= 63, max= 127, avg=96.02, stdev=14.04, samples=52 lat (msec) : 50=0.08%, 100=1.21%, 250=97.58%, 500=1.13% cpu : usr=0.20%, sys=0.99%, ctx=2801, 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=179833: Tue Sep 15 02:50:07 2026 write: IOPS=96, BW=387KiB/s (396kB/s)(10.0MiB/26470msec); 0 zone resets slat (usec): min=27, max=14740, avg=191.03, stdev=635.17 clat (msec): min=23, max=295, avg=164.02, stdev=34.37 lat (msec): min=23, max=295, avg=164.21, stdev=34.37 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 111], 10.00th=[ 123], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 180], 80.00th=[ 190], 90.00th=[ 207], 95.00th=[ 224], | 99.00th=[ 251], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 296] bw ( KiB/s): min= 253, max= 518, per=24.88%, avg=384.17, stdev=61.41, samples=52 iops : min= 63, max= 129, avg=95.65, stdev=15.31, samples=52 lat (msec) : 50=0.04%, 100=1.41%, 250=97.50%, 500=1.05% cpu : usr=0.16%, sys=0.87%, ctx=1928, 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=179834: Tue Sep 15 02:50:07 2026 write: IOPS=96, BW=386KiB/s (396kB/s)(10.0MiB/26501msec); 0 zone resets slat (usec): min=26, max=9374, avg=182.29, stdev=519.67 clat (msec): min=30, max=296, avg=164.64, stdev=34.27 lat (msec): min=30, max=296, avg=164.82, stdev=34.27 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 112], 10.00th=[ 125], 20.00th=[ 138], | 30.00th=[ 148], 40.00th=[ 157], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 180], 80.00th=[ 190], 90.00th=[ 207], 95.00th=[ 222], | 99.00th=[ 271], 99.50th=[ 288], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 255, max= 520, per=24.84%, avg=383.58, stdev=62.03, samples=52 iops : min= 63, max= 130, avg=95.50, stdev=15.50, samples=52 lat (msec) : 50=0.20%, 100=1.56%, 250=96.48%, 500=1.76% cpu : usr=0.18%, sys=0.78%, ctx=2092, 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=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=179835: Tue Sep 15 02:50:07 2026 write: IOPS=96, BW=386KiB/s (395kB/s)(10.0MiB/26516msec); 0 zone resets slat (usec): min=28, max=15094, avg=233.89, stdev=844.58 clat (msec): min=22, max=300, avg=164.31, stdev=35.65 lat (msec): min=22, max=300, avg=164.54, stdev=35.64 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 111], 10.00th=[ 124], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 209], 95.00th=[ 224], | 99.00th=[ 251], 99.50th=[ 264], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 300] bw ( KiB/s): min= 252, max= 558, per=24.73%, avg=381.90, stdev=57.72, samples=52 iops : min= 63, max= 139, avg=95.08, stdev=14.37, samples=52 lat (msec) : 50=0.78%, 100=1.48%, 250=96.37%, 500=1.37% cpu : usr=0.20%, sys=1.13%, ctx=2604, 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=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=1545KiB/s (1582kB/s), 386KiB/s-387KiB/s (395kB/s-396kB/s), io=40.0MiB (41.9MB), run=26458-26516msec 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=179849: Tue Sep 15 02:50:47 2026 read: IOPS=38, BW=156KiB/s (160kB/s)(5048KiB/32374msec) slat (usec): min=2999, max=62907, avg=14032.40, stdev=7735.73 clat (msec): min=17, max=404, avg=188.53, stdev=46.30 lat (msec): min=32, max=425, avg=202.57, stdev=48.17 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 121], 10.00th=[ 133], 20.00th=[ 150], | 30.00th=[ 165], 40.00th=[ 176], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 207], 80.00th=[ 222], 90.00th=[ 245], 95.00th=[ 275], | 99.00th=[ 321], 99.50th=[ 342], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 63, max= 264, per=25.11%, avg=155.42, stdev=38.80, samples=64 iops : min= 15, max= 66, avg=38.39, stdev= 9.76, samples=64 write: IOPS=40, BW=160KiB/s (164kB/s)(5192KiB/32374msec); 0 zone resets slat (usec): min=29, max=11493, avg=239.37, stdev=829.07 clat (msec): min=98, max=410, avg=199.64, stdev=45.10 lat (msec): min=101, max=421, avg=199.88, stdev=45.13 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 132], 10.00th=[ 146], 20.00th=[ 163], | 30.00th=[ 174], 40.00th=[ 186], 50.00th=[ 197], 60.00th=[ 207], | 70.00th=[ 222], 80.00th=[ 234], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 321], 99.50th=[ 380], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 87, max= 238, per=24.84%, avg=160.23, stdev=34.86, samples=64 iops : min= 21, max= 59, avg=39.61, stdev= 8.70, samples=64 lat (msec) : 20=0.04%, 50=0.08%, 100=0.20%, 250=89.49%, 500=10.20% cpu : usr=0.22%, sys=1.56%, ctx=4115, 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=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=179850: Tue Sep 15 02:50:47 2026 read: IOPS=38, BW=154KiB/s (157kB/s)(4976KiB/32373msec) slat (usec): min=2867, max=61489, avg=14145.35, stdev=7874.07 clat (msec): min=25, max=383, avg=191.29, stdev=47.62 lat (msec): min=36, max=408, avg=205.44, stdev=49.73 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 121], 10.00th=[ 133], 20.00th=[ 153], | 30.00th=[ 165], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 199], | 70.00th=[ 211], 80.00th=[ 228], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 330], 99.50th=[ 351], 99.90th=[ 380], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 67, max= 254, per=24.68%, avg=152.78, stdev=43.41, samples=64 iops : min= 16, max= 63, avg=37.72, stdev=10.91, samples=64 write: IOPS=40, BW=163KiB/s (167kB/s)(5264KiB/32373msec); 0 zone resets slat (usec): min=37, max=12287, avg=208.77, stdev=627.35 clat (msec): min=82, max=394, avg=196.89, stdev=45.04 lat (msec): min=82, max=394, avg=197.10, stdev=45.01 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 130], 10.00th=[ 140], 20.00th=[ 157], | 30.00th=[ 171], 40.00th=[ 186], 50.00th=[ 194], 60.00th=[ 205], | 70.00th=[ 218], 80.00th=[ 232], 90.00th=[ 255], 95.00th=[ 275], | 99.00th=[ 317], 99.50th=[ 355], 99.90th=[ 384], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 63, max= 247, per=25.18%, avg=162.44, stdev=38.72, samples=64 iops : min= 15, max= 61, avg=40.16, stdev= 9.70, samples=64 lat (msec) : 50=0.12%, 100=0.23%, 250=88.24%, 500=11.41% cpu : usr=0.21%, sys=1.58%, ctx=4122, 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=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=179851: Tue Sep 15 02:50:47 2026 read: IOPS=38, BW=156KiB/s (159kB/s)(4984KiB/32018msec) slat (usec): min=53, max=56472, avg=14068.65, stdev=7864.43 clat (msec): min=17, max=400, avg=190.89, stdev=49.06 lat (msec): min=17, max=417, avg=204.96, stdev=51.20 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 122], 10.00th=[ 133], 20.00th=[ 153], | 30.00th=[ 165], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 199], | 70.00th=[ 209], 80.00th=[ 228], 90.00th=[ 253], 95.00th=[ 275], | 99.00th=[ 334], 99.50th=[ 372], 99.90th=[ 388], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 95, max= 270, per=25.07%, avg=155.21, stdev=37.12, samples=63 iops : min= 23, max= 67, avg=38.35, stdev= 9.32, samples=63 write: IOPS=41, BW=164KiB/s (168kB/s)(5256KiB/32018msec); 0 zone resets slat (usec): min=31, max=16761, avg=238.04, stdev=791.58 clat (msec): min=33, max=409, avg=194.87, stdev=45.89 lat (msec): min=33, max=409, avg=195.11, stdev=45.91 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 130], 10.00th=[ 140], 20.00th=[ 159], | 30.00th=[ 171], 40.00th=[ 182], 50.00th=[ 192], 60.00th=[ 201], | 70.00th=[ 213], 80.00th=[ 230], 90.00th=[ 251], 95.00th=[ 271], | 99.00th=[ 347], 99.50th=[ 376], 99.90th=[ 405], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 55, max= 246, per=25.21%, avg=162.60, stdev=41.13, samples=63 iops : min= 13, max= 61, avg=40.21, stdev=10.32, samples=63 lat (msec) : 20=0.08%, 50=0.20%, 100=0.59%, 250=88.36%, 500=10.78% cpu : usr=0.26%, sys=1.66%, ctx=4346, 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=179852: Tue Sep 15 02:50:47 2026 read: IOPS=39, BW=157KiB/s (160kB/s)(5060KiB/32288msec) slat (usec): min=2412, max=71733, avg=14354.74, stdev=8256.07 clat (msec): min=25, max=435, avg=190.58, stdev=48.43 lat (msec): min=31, max=453, avg=204.94, stdev=50.51 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 122], 10.00th=[ 133], 20.00th=[ 150], | 30.00th=[ 165], 40.00th=[ 176], 50.00th=[ 186], 60.00th=[ 199], | 70.00th=[ 211], 80.00th=[ 226], 90.00th=[ 251], 95.00th=[ 279], | 99.00th=[ 330], 99.50th=[ 342], 99.90th=[ 405], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 79, max= 286, per=25.19%, avg=155.92, stdev=37.84, samples=64 iops : min= 19, max= 71, avg=38.52, stdev= 9.48, samples=64 write: IOPS=40, BW=160KiB/s (164kB/s)(5180KiB/32288msec); 0 zone resets slat (usec): min=29, max=17057, avg=245.61, stdev=926.72 clat (msec): min=65, max=436, avg=196.34, stdev=46.58 lat (msec): min=65, max=436, avg=196.59, stdev=46.60 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 129], 10.00th=[ 142], 20.00th=[ 159], | 30.00th=[ 171], 40.00th=[ 184], 50.00th=[ 194], 60.00th=[ 205], | 70.00th=[ 215], 80.00th=[ 232], 90.00th=[ 251], 95.00th=[ 275], | 99.00th=[ 363], 99.50th=[ 388], 99.90th=[ 418], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 86, max= 256, per=24.77%, avg=159.78, stdev=40.12, samples=64 iops : min= 21, max= 64, avg=39.48, stdev=10.06, samples=64 lat (msec) : 50=0.04%, 100=0.23%, 250=89.38%, 500=10.35% cpu : usr=0.26%, sys=1.53%, ctx=4515, 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=620KiB/s (635kB/s), 154KiB/s-157KiB/s (157kB/s-160kB/s), io=19.6MiB (20.5MB), run=32018-32374msec WRITE: bw=645KiB/s (661kB/s), 160KiB/s-164KiB/s (164kB/s-168kB/s), io=20.4MiB (21.4MB), run=32018-32374msec 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=179861: Tue Sep 15 02:50:54 2026 read: IOPS=2, BW=107MiB/s (112MB/s)(40.0MiB/374msec) slat (nsec): min=27909k, max=27909k, avg=27908582.00, stdev= 0.00 clat (nsec): min=328378k, max=328378k, avg=328377756.00, stdev= 0.00 lat (nsec): min=356291k, max=356291k, avg=356291020.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.75%, ctx=6, 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=107MiB/s (112MB/s), 107MiB/s-107MiB/s (112MB/s-112MB/s), io=40.0MiB (41.9MB), run=374-374msec 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