== sanity test 398c: run fio to test AIO ================= 09:09:43 (1787576983) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.642962 s, 65.2 MB/s osc.lustre-OST0000-osc-ffff9bddc6975800.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=180081: Mon Aug 24 09:10:28 2026 write: IOPS=74, BW=298KiB/s (305kB/s)(10.0MiB/34357msec); 0 zone resets slat (usec): min=21, max=25320, avg=202.30, stdev=1083.95 clat (msec): min=41, max=466, avg=213.76, stdev=68.83 lat (msec): min=41, max=466, avg=213.97, stdev=68.84 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 116], 10.00th=[ 129], 20.00th=[ 153], | 30.00th=[ 169], 40.00th=[ 188], 50.00th=[ 207], 60.00th=[ 230], | 70.00th=[ 253], 80.00th=[ 271], 90.00th=[ 300], 95.00th=[ 326], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 127, max= 640, per=24.87%, avg=296.40, stdev=87.43, samples=68 iops : min= 31, max= 160, avg=73.71, stdev=21.87, samples=68 lat (msec) : 50=0.04%, 100=0.82%, 250=68.20%, 500=30.94% cpu : usr=0.16%, sys=0.63%, ctx=1626, 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=180082: Mon Aug 24 09:10:28 2026 write: IOPS=74, BW=299KiB/s (306kB/s)(10.0MiB/34304msec); 0 zone resets slat (usec): min=20, max=14187, avg=186.96, stdev=792.38 clat (msec): min=87, max=451, avg=213.60, stdev=69.02 lat (msec): min=87, max=451, avg=213.79, stdev=69.05 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 116], 10.00th=[ 131], 20.00th=[ 148], | 30.00th=[ 167], 40.00th=[ 184], 50.00th=[ 213], 60.00th=[ 230], | 70.00th=[ 251], 80.00th=[ 271], 90.00th=[ 296], 95.00th=[ 334], | 99.00th=[ 401], 99.50th=[ 439], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 125, max= 512, per=24.93%, avg=297.13, stdev=84.64, samples=68 iops : min= 31, max= 128, avg=73.88, stdev=21.16, samples=68 lat (msec) : 100=1.88%, 250=68.12%, 500=30.00% cpu : usr=0.13%, sys=0.71%, ctx=1332, 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=180083: Mon Aug 24 09:10:28 2026 write: IOPS=74, BW=299KiB/s (306kB/s)(10.0MiB/34253msec); 0 zone resets slat (usec): min=21, max=27223, avg=235.53, stdev=1029.77 clat (msec): min=25, max=459, avg=213.36, stdev=70.01 lat (msec): min=25, max=459, avg=213.60, stdev=70.01 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 115], 10.00th=[ 130], 20.00th=[ 148], | 30.00th=[ 169], 40.00th=[ 188], 50.00th=[ 209], 60.00th=[ 230], | 70.00th=[ 249], 80.00th=[ 271], 90.00th=[ 309], 95.00th=[ 334], | 99.00th=[ 388], 99.50th=[ 414], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 460] bw ( KiB/s): min= 125, max= 528, per=24.90%, avg=296.84, stdev=85.27, samples=67 iops : min= 31, max= 132, avg=73.82, stdev=21.30, samples=67 lat (msec) : 50=0.39%, 100=1.17%, 250=69.14%, 500=29.30% cpu : usr=0.18%, sys=1.00%, ctx=2536, 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=180084: Mon Aug 24 09:10:28 2026 write: IOPS=74, BW=299KiB/s (306kB/s)(10.0MiB/34254msec); 0 zone resets slat (usec): min=22, max=28778, avg=229.36, stdev=1105.01 clat (msec): min=24, max=447, avg=213.71, stdev=68.86 lat (msec): min=24, max=447, avg=213.94, stdev=68.89 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 112], 10.00th=[ 131], 20.00th=[ 153], | 30.00th=[ 169], 40.00th=[ 190], 50.00th=[ 209], 60.00th=[ 226], | 70.00th=[ 253], 80.00th=[ 275], 90.00th=[ 296], 95.00th=[ 326], | 99.00th=[ 405], 99.50th=[ 430], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 125, max= 512, per=24.95%, avg=297.39, stdev=82.77, samples=67 iops : min= 31, max= 128, avg=73.94, stdev=20.68, samples=67 lat (msec) : 50=0.08%, 100=1.41%, 250=67.85%, 500=30.66% cpu : usr=0.16%, sys=0.76%, ctx=1963, 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=1192KiB/s (1221kB/s), 298KiB/s-299KiB/s (305kB/s-306kB/s), io=40.0MiB (41.9MB), run=34253-34357msec 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=180100: Mon Aug 24 09:11:20 2026 read: IOPS=28, BW=115KiB/s (118kB/s)(5048KiB/43783msec) slat (usec): min=51, max=166006, avg=19411.87, stdev=11975.55 clat (msec): min=21, max=589, avg=259.98, stdev=76.84 lat (msec): min=39, max=618, avg=279.40, stdev=80.31 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 155], 10.00th=[ 174], 20.00th=[ 199], | 30.00th=[ 215], 40.00th=[ 232], 50.00th=[ 249], 60.00th=[ 268], | 70.00th=[ 292], 80.00th=[ 321], 90.00th=[ 363], 95.00th=[ 401], | 99.00th=[ 489], 99.50th=[ 506], 99.90th=[ 584], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 54, max= 232, per=25.02%, avg=114.57, stdev=32.47, samples=86 iops : min= 13, max= 58, avg=28.08, stdev= 8.19, samples=86 write: IOPS=29, BW=119KiB/s (121kB/s)(5192KiB/43783msec); 0 zone resets slat (usec): min=23, max=13140, avg=226.27, stdev=750.80 clat (msec): min=70, max=565, avg=264.62, stdev=71.06 lat (msec): min=70, max=565, avg=264.85, stdev=71.04 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 157], 10.00th=[ 182], 20.00th=[ 209], | 30.00th=[ 222], 40.00th=[ 236], 50.00th=[ 259], 60.00th=[ 275], | 70.00th=[ 296], 80.00th=[ 326], 90.00th=[ 363], 95.00th=[ 388], | 99.00th=[ 443], 99.50th=[ 485], 99.90th=[ 558], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 40, max= 208, per=24.75%, avg=118.07, stdev=36.85, samples=86 iops : min= 10, max= 52, avg=28.99, stdev= 9.26, samples=86 lat (msec) : 50=0.04%, 100=0.35%, 250=47.58%, 500=51.60%, 750=0.43% cpu : usr=0.19%, sys=1.46%, ctx=3910, 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=180101: Mon Aug 24 09:11:20 2026 read: IOPS=28, BW=114KiB/s (117kB/s)(4976KiB/43606msec) slat (usec): min=54, max=108249, avg=18998.60, stdev=12043.02 clat (msec): min=23, max=590, avg=258.01, stdev=75.08 lat (msec): min=42, max=614, avg=277.01, stdev=78.41 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 153], 10.00th=[ 176], 20.00th=[ 199], | 30.00th=[ 215], 40.00th=[ 230], 50.00th=[ 245], 60.00th=[ 266], | 70.00th=[ 288], 80.00th=[ 317], 90.00th=[ 355], 95.00th=[ 397], | 99.00th=[ 481], 99.50th=[ 523], 99.90th=[ 567], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 24, max= 238, per=24.75%, avg=113.36, stdev=38.93, samples=86 iops : min= 6, max= 59, avg=27.79, stdev= 9.79, samples=86 write: IOPS=30, BW=121KiB/s (124kB/s)(5264KiB/43606msec); 0 zone resets slat (usec): min=31, max=24578, avg=238.22, stdev=1145.40 clat (msec): min=97, max=590, avg=264.90, stdev=71.97 lat (msec): min=97, max=590, avg=265.14, stdev=72.02 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 157], 10.00th=[ 188], 20.00th=[ 211], | 30.00th=[ 224], 40.00th=[ 241], 50.00th=[ 255], 60.00th=[ 271], | 70.00th=[ 288], 80.00th=[ 317], 90.00th=[ 363], 95.00th=[ 401], | 99.00th=[ 485], 99.50th=[ 527], 99.90th=[ 567], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 47, max= 215, per=25.21%, avg=120.26, stdev=36.57, samples=86 iops : min= 11, max= 53, avg=29.51, stdev= 9.20, samples=86 lat (msec) : 50=0.08%, 100=0.20%, 250=50.12%, 500=48.75%, 750=0.86% cpu : usr=0.23%, sys=1.47%, ctx=3849, 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=180102: Mon Aug 24 09:11:20 2026 read: IOPS=28, BW=115KiB/s (118kB/s)(4984KiB/43192msec) slat (usec): min=49, max=99890, avg=19074.85, stdev=11592.84 clat (msec): min=23, max=601, avg=255.15, stdev=77.21 lat (msec): min=32, max=662, avg=274.23, stdev=80.75 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 150], 10.00th=[ 171], 20.00th=[ 192], | 30.00th=[ 213], 40.00th=[ 230], 50.00th=[ 247], 60.00th=[ 266], | 70.00th=[ 288], 80.00th=[ 313], 90.00th=[ 355], 95.00th=[ 380], | 99.00th=[ 493], 99.50th=[ 550], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 47, max= 248, per=25.23%, avg=115.55, stdev=37.39, samples=85 iops : min= 11, max= 62, avg=28.36, stdev= 9.31, samples=85 write: IOPS=30, BW=122KiB/s (125kB/s)(5256KiB/43192msec); 0 zone resets slat (usec): min=25, max=34006, avg=278.01, stdev=1488.66 clat (msec): min=73, max=601, avg=264.52, stdev=76.61 lat (msec): min=74, max=601, avg=264.80, stdev=76.73 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 155], 10.00th=[ 180], 20.00th=[ 203], | 30.00th=[ 222], 40.00th=[ 239], 50.00th=[ 255], 60.00th=[ 275], | 70.00th=[ 296], 80.00th=[ 326], 90.00th=[ 368], 95.00th=[ 397], | 99.00th=[ 506], 99.50th=[ 558], 99.90th=[ 592], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 40, max= 223, per=25.42%, avg=121.27, stdev=37.03, samples=85 iops : min= 10, max= 55, avg=29.80, stdev= 9.25, samples=85 lat (msec) : 50=0.23%, 100=0.59%, 250=48.59%, 500=49.61%, 750=0.98% cpu : usr=0.26%, sys=1.42%, ctx=4078, 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=180103: Mon Aug 24 09:11:20 2026 read: IOPS=28, BW=116KiB/s (119kB/s)(5060KiB/43701msec) slat (usec): min=63, max=128134, avg=19296.92, stdev=11966.67 clat (msec): min=29, max=604, avg=258.84, stdev=75.22 lat (msec): min=66, max=623, avg=278.14, stdev=78.46 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 153], 10.00th=[ 176], 20.00th=[ 199], | 30.00th=[ 218], 40.00th=[ 234], 50.00th=[ 249], 60.00th=[ 266], | 70.00th=[ 288], 80.00th=[ 317], 90.00th=[ 355], 95.00th=[ 393], | 99.00th=[ 481], 99.50th=[ 531], 99.90th=[ 600], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 39, max= 198, per=25.16%, avg=115.24, stdev=32.33, samples=86 iops : min= 9, max= 49, avg=28.27, stdev= 8.14, samples=86 write: IOPS=29, BW=119KiB/s (121kB/s)(5180KiB/43701msec); 0 zone resets slat (usec): min=31, max=15249, avg=229.21, stdev=699.46 clat (msec): min=52, max=666, avg=264.89, stdev=75.50 lat (msec): min=52, max=666, avg=265.12, stdev=75.48 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 155], 10.00th=[ 178], 20.00th=[ 209], | 30.00th=[ 224], 40.00th=[ 236], 50.00th=[ 257], 60.00th=[ 275], | 70.00th=[ 296], 80.00th=[ 317], 90.00th=[ 363], 95.00th=[ 397], | 99.00th=[ 498], 99.50th=[ 567], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 40, max= 248, per=24.75%, avg=118.05, stdev=38.84, samples=86 iops : min= 10, max= 62, avg=28.97, stdev= 9.77, samples=86 lat (msec) : 50=0.08%, 100=0.39%, 250=48.16%, 500=50.55%, 750=0.82% cpu : usr=0.25%, sys=1.42%, ctx=4114, 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=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=458KiB/s (469kB/s), 114KiB/s-116KiB/s (117kB/s-119kB/s), io=19.6MiB (20.5MB), run=43192-43783msec WRITE: bw=477KiB/s (489kB/s), 119KiB/s-122KiB/s (121kB/s-125kB/s), io=20.4MiB (21.4MB), run=43192-43783msec 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=180114: Mon Aug 24 09:11:33 2026 read: IOPS=1, BW=52.2MiB/s (54.7MB/s)(40.0MiB/767msec) slat (nsec): min=57509k, max=57509k, avg=57509248.00, stdev= 0.00 clat (nsec): min=652640k, max=652640k, avg=652639981.00, stdev= 0.00 lat (nsec): min=710157k, max=710157k, avg=710156953.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.57%, ctx=4, majf=0, minf=7 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=52.2MiB/s (54.7MB/s), 52.2MiB/s-52.2MiB/s (54.7MB/s-54.7MB/s), io=40.0MiB (41.9MB), run=767-767msec 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