== sanity test 398c: run fio to test AIO ================= 04:06:40 (1787472400) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.50646 s, 82.8 MB/s osc.lustre-OST0000-osc-ffff9def48e58000.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=179975: Sun Aug 23 04:07:15 2026 write: IOPS=94, BW=379KiB/s (388kB/s)(10.0MiB/27039msec); 0 zone resets slat (usec): min=44, max=17151, avg=322.92, stdev=902.13 clat (msec): min=77, max=284, avg=168.04, stdev=38.72 lat (msec): min=77, max=284, avg=168.37, stdev=38.73 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 114], 10.00th=[ 124], 20.00th=[ 134], | 30.00th=[ 144], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 186], 80.00th=[ 203], 90.00th=[ 222], 95.00th=[ 241], | 99.00th=[ 266], 99.50th=[ 275], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 253, max= 512, per=24.90%, avg=377.06, stdev=76.19, samples=53 iops : min= 63, max= 128, avg=93.87, stdev=19.10, samples=53 lat (msec) : 100=1.29%, 250=95.98%, 500=2.73% cpu : usr=0.15%, sys=1.19%, ctx=2408, 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=179976: Sun Aug 23 04:07:15 2026 write: IOPS=94, BW=380KiB/s (389kB/s)(10.0MiB/26949msec); 0 zone resets slat (usec): min=48, max=19935, avg=299.29, stdev=707.00 clat (msec): min=14, max=274, avg=167.59, stdev=39.81 lat (msec): min=14, max=274, avg=167.89, stdev=39.78 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 114], 10.00th=[ 123], 20.00th=[ 136], | 30.00th=[ 142], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 205], 90.00th=[ 224], 95.00th=[ 239], | 99.00th=[ 264], 99.50th=[ 266], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 253, max= 512, per=25.04%, avg=379.13, stdev=70.44, samples=53 iops : min= 63, max= 128, avg=94.40, stdev=17.66, samples=53 lat (msec) : 20=0.04%, 50=0.70%, 100=1.13%, 250=94.96%, 500=3.16% cpu : usr=0.16%, sys=1.26%, ctx=2763, 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=179977: Sun Aug 23 04:07:15 2026 write: IOPS=95, BW=382KiB/s (391kB/s)(10.0MiB/26824msec); 0 zone resets slat (usec): min=50, max=17617, avg=312.26, stdev=837.80 clat (msec): min=40, max=339, avg=167.20, stdev=39.86 lat (msec): min=40, max=339, avg=167.51, stdev=39.86 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 113], 10.00th=[ 121], 20.00th=[ 134], | 30.00th=[ 142], 40.00th=[ 150], 50.00th=[ 163], 60.00th=[ 176], | 70.00th=[ 188], 80.00th=[ 203], 90.00th=[ 218], 95.00th=[ 239], | 99.00th=[ 268], 99.50th=[ 275], 99.90th=[ 313], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 253, max= 534, per=25.13%, avg=380.42, stdev=64.84, samples=53 iops : min= 63, max= 133, avg=94.70, stdev=16.25, samples=53 lat (msec) : 50=0.04%, 100=1.91%, 250=95.94%, 500=2.11% cpu : usr=0.16%, sys=1.13%, ctx=2524, 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=179978: Sun Aug 23 04:07:15 2026 write: IOPS=94, BW=379KiB/s (388kB/s)(10.0MiB/27040msec); 0 zone resets slat (usec): min=38, max=16559, avg=317.61, stdev=810.64 clat (msec): min=37, max=306, avg=168.08, stdev=39.07 lat (msec): min=37, max=307, avg=168.40, stdev=39.07 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 114], 10.00th=[ 124], 20.00th=[ 134], | 30.00th=[ 142], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 176], | 70.00th=[ 188], 80.00th=[ 203], 90.00th=[ 222], 95.00th=[ 241], | 99.00th=[ 266], 99.50th=[ 268], 99.90th=[ 279], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 253, max= 526, per=24.94%, avg=377.60, stdev=65.58, samples=53 iops : min= 63, max= 131, avg=94.04, stdev=16.44, samples=53 lat (msec) : 50=0.23%, 100=1.33%, 250=95.51%, 500=2.93% cpu : usr=0.11%, sys=1.27%, ctx=2821, 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=1515KiB/s (1551kB/s), 379KiB/s-382KiB/s (388kB/s-391kB/s), io=40.0MiB (41.9MB), run=26824-27040msec 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=179993: Sun Aug 23 04:07:59 2026 read: IOPS=38, BW=155KiB/s (159kB/s)(5048KiB/32475msec) slat (usec): min=2499, max=71600, avg=14084.17, stdev=8828.78 clat (msec): min=22, max=354, avg=190.89, stdev=48.61 lat (msec): min=34, max=375, avg=204.98, stdev=51.18 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 121], 10.00th=[ 131], 20.00th=[ 150], | 30.00th=[ 163], 40.00th=[ 176], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 211], 80.00th=[ 228], 90.00th=[ 257], 95.00th=[ 284], | 99.00th=[ 330], 99.50th=[ 338], 99.90th=[ 347], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 59, max= 248, per=25.16%, avg=155.25, stdev=41.66, samples=64 iops : min= 14, max= 62, avg=38.41, stdev=10.47, samples=64 write: IOPS=39, BW=160KiB/s (164kB/s)(5192KiB/32475msec); 0 zone resets slat (usec): min=55, max=11134, avg=327.01, stdev=903.08 clat (msec): min=94, max=379, avg=196.54, stdev=50.67 lat (msec): min=95, max=379, avg=196.87, stdev=50.69 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 124], 10.00th=[ 138], 20.00th=[ 153], | 30.00th=[ 167], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 203], | 70.00th=[ 218], 80.00th=[ 239], 90.00th=[ 271], 95.00th=[ 292], | 99.00th=[ 334], 99.50th=[ 338], 99.90th=[ 372], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 35, max= 232, per=24.92%, avg=159.97, stdev=40.40, samples=64 iops : min= 8, max= 58, avg=39.58, stdev=10.16, samples=64 lat (msec) : 50=0.04%, 100=0.51%, 250=85.51%, 500=13.95% cpu : usr=0.21%, sys=1.76%, ctx=4633, 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=179994: Sun Aug 23 04:07:59 2026 read: IOPS=38, BW=153KiB/s (157kB/s)(4976KiB/32476msec) slat (usec): min=2357, max=68796, avg=14030.48, stdev=8724.84 clat (msec): min=15, max=391, avg=189.57, stdev=50.50 lat (msec): min=29, max=417, avg=203.61, stdev=52.89 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 116], 10.00th=[ 131], 20.00th=[ 148], | 30.00th=[ 161], 40.00th=[ 174], 50.00th=[ 184], 60.00th=[ 197], | 70.00th=[ 211], 80.00th=[ 230], 90.00th=[ 259], 95.00th=[ 284], | 99.00th=[ 334], 99.50th=[ 347], 99.90th=[ 376], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 35, max= 264, per=24.78%, avg=152.91, stdev=42.55, samples=64 iops : min= 8, max= 66, avg=37.81, stdev=10.69, samples=64 write: IOPS=40, BW=162KiB/s (166kB/s)(5264KiB/32476msec); 0 zone resets slat (usec): min=52, max=15221, avg=296.26, stdev=839.63 clat (msec): min=85, max=374, avg=198.30, stdev=49.57 lat (msec): min=86, max=375, avg=198.60, stdev=49.57 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 126], 10.00th=[ 138], 20.00th=[ 157], | 30.00th=[ 169], 40.00th=[ 182], 50.00th=[ 194], 60.00th=[ 207], | 70.00th=[ 220], 80.00th=[ 239], 90.00th=[ 266], 95.00th=[ 284], | 99.00th=[ 342], 99.50th=[ 355], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 70, max= 264, per=25.28%, avg=162.27, stdev=41.77, samples=64 iops : min= 17, max= 66, avg=40.14, stdev=10.49, samples=64 lat (msec) : 20=0.04%, 50=0.12%, 100=0.59%, 250=85.23%, 500=14.02% cpu : usr=0.20%, sys=1.76%, ctx=4297, 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=179995: Sun Aug 23 04:07:59 2026 read: IOPS=38, BW=155KiB/s (158kB/s)(4984KiB/32251msec) slat (usec): min=94, max=61435, avg=14396.10, stdev=8657.58 clat (msec): min=28, max=409, avg=191.29, stdev=51.03 lat (msec): min=28, max=423, avg=205.69, stdev=53.31 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 121], 10.00th=[ 133], 20.00th=[ 150], | 30.00th=[ 161], 40.00th=[ 174], 50.00th=[ 184], 60.00th=[ 197], | 70.00th=[ 211], 80.00th=[ 232], 90.00th=[ 262], 95.00th=[ 288], | 99.00th=[ 326], 99.50th=[ 372], 99.90th=[ 401], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 63, max= 224, per=24.99%, avg=154.21, stdev=37.28, samples=63 iops : min= 15, max= 56, avg=38.14, stdev= 9.37, samples=63 write: IOPS=40, BW=163KiB/s (167kB/s)(5256KiB/32251msec); 0 zone resets slat (usec): min=54, max=14372, avg=290.83, stdev=747.79 clat (msec): min=76, max=386, avg=196.58, stdev=50.22 lat (msec): min=77, max=386, avg=196.87, stdev=50.22 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 129], 10.00th=[ 138], 20.00th=[ 153], | 30.00th=[ 165], 40.00th=[ 178], 50.00th=[ 190], 60.00th=[ 205], | 70.00th=[ 215], 80.00th=[ 236], 90.00th=[ 271], 95.00th=[ 292], | 99.00th=[ 338], 99.50th=[ 355], 99.90th=[ 380], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 63, max= 269, per=25.19%, avg=161.70, stdev=44.25, samples=63 iops : min= 15, max= 67, avg=40.02, stdev=11.11, samples=63 lat (msec) : 50=0.08%, 100=0.86%, 250=84.57%, 500=14.49% cpu : usr=0.17%, sys=1.77%, ctx=4303, 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=179996: Sun Aug 23 04:07:59 2026 read: IOPS=38, BW=156KiB/s (159kB/s)(5060KiB/32511msec) slat (usec): min=2665, max=71939, avg=14172.64, stdev=8517.76 clat (msec): min=11, max=406, avg=190.27, stdev=52.32 lat (msec): min=28, max=410, avg=204.45, stdev=54.90 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 115], 10.00th=[ 131], 20.00th=[ 148], | 30.00th=[ 161], 40.00th=[ 176], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 209], 80.00th=[ 228], 90.00th=[ 257], 95.00th=[ 292], | 99.00th=[ 342], 99.50th=[ 372], 99.90th=[ 388], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 39, max= 238, per=25.10%, avg=154.84, stdev=40.81, samples=64 iops : min= 9, max= 59, avg=38.30, stdev=10.24, samples=64 write: IOPS=39, BW=159KiB/s (163kB/s)(5180KiB/32511msec); 0 zone resets slat (usec): min=54, max=19876, avg=323.75, stdev=1090.24 clat (msec): min=30, max=403, avg=198.16, stdev=53.24 lat (msec): min=30, max=403, avg=198.49, stdev=53.33 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 125], 10.00th=[ 136], 20.00th=[ 155], | 30.00th=[ 167], 40.00th=[ 182], 50.00th=[ 192], 60.00th=[ 205], | 70.00th=[ 220], 80.00th=[ 239], 90.00th=[ 275], 95.00th=[ 296], | 99.00th=[ 342], 99.50th=[ 359], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 41, max= 288, per=24.70%, avg=158.56, stdev=45.59, samples=64 iops : min= 10, max= 72, avg=39.22, stdev=11.45, samples=64 lat (msec) : 20=0.04%, 50=0.31%, 100=0.55%, 250=85.00%, 500=14.10% cpu : usr=0.21%, sys=1.70%, ctx=4350, 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=617KiB/s (632kB/s), 153KiB/s-156KiB/s (157kB/s-159kB/s), io=19.6MiB (20.5MB), run=32251-32511msec WRITE: bw=643KiB/s (658kB/s), 159KiB/s-163KiB/s (163kB/s-167kB/s), io=20.4MiB (21.4MB), run=32251-32511msec 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=180005: Sun Aug 23 04:08:06 2026 read: IOPS=2, BW=112MiB/s (118MB/s)(40.0MiB/356msec) slat (nsec): min=29093k, max=29093k, avg=29092698.00, stdev= 0.00 clat (nsec): min=302696k, max=302696k, avg=302696015.00, stdev= 0.00 lat (nsec): min=331792k, max=331792k, avg=331791912.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.66%, ctx=10, majf=0, minf=10 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=112MiB/s (118MB/s), 112MiB/s-112MiB/s (118MB/s-118MB/s), io=40.0MiB (41.9MB), run=356-356msec 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