== sanity test 398c: run fio to test AIO ================= 01:13:12 (1786425192) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.481395 s, 87.1 MB/s osc.lustre-OST0000-osc-ffff9c245433a800.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=179766: Tue Aug 11 01:13:51 2026 write: IOPS=83, BW=334KiB/s (342kB/s)(10.0MiB/30672msec); 0 zone resets slat (usec): min=47, max=13247, avg=268.67, stdev=687.16 clat (msec): min=52, max=382, avg=190.45, stdev=36.94 lat (msec): min=52, max=382, avg=190.72, stdev=36.93 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 136], 10.00th=[ 148], 20.00th=[ 161], | 30.00th=[ 174], 40.00th=[ 180], 50.00th=[ 188], 60.00th=[ 197], | 70.00th=[ 207], 80.00th=[ 218], 90.00th=[ 234], 95.00th=[ 249], | 99.00th=[ 288], 99.50th=[ 372], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 255, max= 439, per=24.95%, avg=333.03, stdev=49.72, samples=60 iops : min= 63, max= 109, avg=82.82, stdev=12.44, samples=60 lat (msec) : 100=0.66%, 250=94.49%, 500=4.84% cpu : usr=0.15%, sys=1.01%, ctx=2574, 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=179767: Tue Aug 11 01:13:51 2026 write: IOPS=83, BW=334KiB/s (342kB/s)(10.0MiB/30667msec); 0 zone resets slat (usec): min=52, max=19643, avg=291.36, stdev=805.68 clat (msec): min=22, max=373, avg=190.39, stdev=36.60 lat (msec): min=22, max=373, avg=190.68, stdev=36.58 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 132], 10.00th=[ 146], 20.00th=[ 161], | 30.00th=[ 171], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 199], | 70.00th=[ 207], 80.00th=[ 218], 90.00th=[ 232], 95.00th=[ 249], | 99.00th=[ 300], 99.50th=[ 330], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 200, max= 461, per=24.96%, avg=333.25, stdev=58.11, samples=60 iops : min= 50, max= 115, avg=82.90, stdev=14.52, samples=60 lat (msec) : 50=0.08%, 100=0.04%, 250=95.59%, 500=4.30% cpu : usr=0.18%, sys=1.13%, ctx=2745, 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=179768: Tue Aug 11 01:13:51 2026 write: IOPS=83, BW=334KiB/s (342kB/s)(10.0MiB/30669msec); 0 zone resets slat (usec): min=51, max=16898, avg=301.07, stdev=822.55 clat (msec): min=10, max=372, avg=190.28, stdev=36.81 lat (msec): min=10, max=373, avg=190.58, stdev=36.79 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 134], 10.00th=[ 146], 20.00th=[ 161], | 30.00th=[ 171], 40.00th=[ 182], 50.00th=[ 188], 60.00th=[ 197], | 70.00th=[ 207], 80.00th=[ 218], 90.00th=[ 232], 95.00th=[ 245], | 99.00th=[ 296], 99.50th=[ 347], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 216, max= 500, per=24.98%, avg=333.47, stdev=61.07, samples=60 iops : min= 54, max= 125, avg=82.97, stdev=15.29, samples=60 lat (msec) : 20=0.04%, 50=0.08%, 100=0.04%, 250=95.16%, 500=4.69% cpu : usr=0.15%, sys=1.13%, ctx=2786, 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=179769: Tue Aug 11 01:13:51 2026 write: IOPS=83, BW=336KiB/s (344kB/s)(10.0MiB/30492msec); 0 zone resets slat (usec): min=51, max=11047, avg=319.57, stdev=791.62 clat (msec): min=22, max=390, avg=190.07, stdev=37.74 lat (msec): min=22, max=390, avg=190.39, stdev=37.72 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 136], 10.00th=[ 144], 20.00th=[ 161], | 30.00th=[ 171], 40.00th=[ 182], 50.00th=[ 190], 60.00th=[ 199], | 70.00th=[ 209], 80.00th=[ 220], 90.00th=[ 234], 95.00th=[ 245], | 99.00th=[ 288], 99.50th=[ 359], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 393] bw ( KiB/s): min= 240, max= 447, per=25.07%, avg=334.75, stdev=46.48, samples=60 iops : min= 60, max= 111, avg=83.27, stdev=11.66, samples=60 lat (msec) : 50=0.27%, 100=0.43%, 250=95.08%, 500=4.22% cpu : usr=0.16%, sys=1.08%, ctx=2958, 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=1335KiB/s (1367kB/s), 334KiB/s-336KiB/s (342kB/s-344kB/s), io=40.0MiB (41.9MB), run=30492-30672msec 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=179783: Tue Aug 11 01:14:35 2026 read: IOPS=34, BW=137KiB/s (140kB/s)(5048KiB/36864msec) slat (usec): min=57, max=75449, avg=15759.85, stdev=9834.62 clat (msec): min=40, max=465, avg=218.02, stdev=63.20 lat (msec): min=58, max=474, avg=233.79, stdev=66.13 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 131], 10.00th=[ 144], 20.00th=[ 163], | 30.00th=[ 180], 40.00th=[ 194], 50.00th=[ 211], 60.00th=[ 228], | 70.00th=[ 247], 80.00th=[ 268], 90.00th=[ 309], 95.00th=[ 334], | 99.00th=[ 388], 99.50th=[ 401], 99.90th=[ 435], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 39, max= 240, per=25.13%, avg=135.93, stdev=39.75, samples=73 iops : min= 9, max= 60, avg=33.52, stdev= 9.99, samples=73 write: IOPS=35, BW=141KiB/s (144kB/s)(5192KiB/36864msec); 0 zone resets slat (usec): min=52, max=11052, avg=306.93, stdev=704.85 clat (msec): min=54, max=464, avg=226.33, stdev=61.51 lat (msec): min=54, max=464, avg=226.64, stdev=61.53 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 140], 10.00th=[ 153], 20.00th=[ 171], | 30.00th=[ 190], 40.00th=[ 207], 50.00th=[ 222], 60.00th=[ 236], | 70.00th=[ 253], 80.00th=[ 275], 90.00th=[ 309], 95.00th=[ 338], | 99.00th=[ 397], 99.50th=[ 405], 99.90th=[ 447], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 46, max= 250, per=24.96%, avg=140.51, stdev=37.25, samples=73 iops : min= 11, max= 62, avg=34.64, stdev= 9.37, samples=73 lat (msec) : 50=0.08%, 100=0.39%, 250=70.31%, 500=29.22% cpu : usr=0.23%, sys=1.63%, ctx=4246, 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=179784: Tue Aug 11 01:14:35 2026 read: IOPS=33, BW=135KiB/s (138kB/s)(4976KiB/36940msec) slat (usec): min=2813, max=73089, avg=15709.12, stdev=9879.78 clat (msec): min=6, max=474, avg=217.04, stdev=62.95 lat (msec): min=41, max=513, avg=232.75, stdev=66.08 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 128], 10.00th=[ 142], 20.00th=[ 163], | 30.00th=[ 180], 40.00th=[ 194], 50.00th=[ 211], 60.00th=[ 230], | 70.00th=[ 247], 80.00th=[ 268], 90.00th=[ 300], 95.00th=[ 334], | 99.00th=[ 397], 99.50th=[ 405], 99.90th=[ 435], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 55, max= 266, per=24.69%, avg=133.59, stdev=43.43, samples=73 iops : min= 13, max= 66, avg=32.92, stdev=10.95, samples=73 write: IOPS=35, BW=143KiB/s (146kB/s)(5264KiB/36940msec); 0 zone resets slat (usec): min=55, max=15602, avg=296.66, stdev=724.93 clat (msec): min=45, max=418, avg=227.06, stdev=62.45 lat (msec): min=45, max=419, avg=227.36, stdev=62.46 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 136], 10.00th=[ 153], 20.00th=[ 169], | 30.00th=[ 190], 40.00th=[ 207], 50.00th=[ 222], 60.00th=[ 236], | 70.00th=[ 257], 80.00th=[ 279], 90.00th=[ 317], 95.00th=[ 342], | 99.00th=[ 384], 99.50th=[ 401], 99.90th=[ 405], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 61, max= 223, per=25.21%, avg=141.95, stdev=36.35, samples=73 iops : min= 15, max= 55, avg=35.01, stdev= 9.12, samples=73 lat (msec) : 10=0.04%, 50=0.12%, 100=0.27%, 250=69.57%, 500=30.00% cpu : usr=0.22%, sys=1.67%, ctx=4285, 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=179785: Tue Aug 11 01:14:35 2026 read: IOPS=33, BW=135KiB/s (138kB/s)(4984KiB/37043msec) slat (usec): min=2881, max=83012, avg=16049.21, stdev=10101.34 clat (msec): min=53, max=458, avg=220.05, stdev=61.28 lat (msec): min=61, max=484, avg=236.11, stdev=64.74 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 133], 10.00th=[ 148], 20.00th=[ 167], | 30.00th=[ 182], 40.00th=[ 197], 50.00th=[ 213], 60.00th=[ 228], | 70.00th=[ 249], 80.00th=[ 271], 90.00th=[ 309], 95.00th=[ 334], | 99.00th=[ 384], 99.50th=[ 401], 99.90th=[ 439], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 71, max= 248, per=24.72%, avg=133.74, stdev=36.96, samples=73 iops : min= 17, max= 62, avg=32.96, stdev= 9.28, samples=73 write: IOPS=35, BW=142KiB/s (145kB/s)(5256KiB/37043msec); 0 zone resets slat (usec): min=57, max=18556, avg=428.97, stdev=1229.46 clat (msec): min=94, max=402, avg=224.85, stdev=60.07 lat (msec): min=97, max=402, avg=225.28, stdev=60.09 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 140], 10.00th=[ 150], 20.00th=[ 167], | 30.00th=[ 188], 40.00th=[ 207], 50.00th=[ 220], 60.00th=[ 236], | 70.00th=[ 253], 80.00th=[ 279], 90.00th=[ 309], 95.00th=[ 338], | 99.00th=[ 380], 99.50th=[ 388], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 71, max= 246, per=24.96%, avg=140.53, stdev=42.81, samples=73 iops : min= 17, max= 61, avg=34.66, stdev=10.77, samples=73 lat (msec) : 100=0.27%, 250=69.34%, 500=30.39% cpu : usr=0.17%, sys=1.73%, ctx=4351, 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=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=179786: Tue Aug 11 01:14:35 2026 read: IOPS=34, BW=136KiB/s (140kB/s)(5060KiB/37073msec) slat (usec): min=2882, max=81859, avg=15694.25, stdev=9864.47 clat (msec): min=24, max=440, avg=217.86, stdev=63.32 lat (msec): min=41, max=474, avg=233.56, stdev=66.71 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 129], 10.00th=[ 144], 20.00th=[ 163], | 30.00th=[ 180], 40.00th=[ 194], 50.00th=[ 211], 60.00th=[ 226], | 70.00th=[ 247], 80.00th=[ 275], 90.00th=[ 305], 95.00th=[ 334], | 99.00th=[ 388], 99.50th=[ 393], 99.90th=[ 426], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 71, max= 272, per=24.98%, avg=135.14, stdev=40.72, samples=73 iops : min= 17, max= 68, avg=33.30, stdev=10.25, samples=73 write: IOPS=34, BW=140KiB/s (143kB/s)(5180KiB/37073msec); 0 zone resets slat (usec): min=57, max=17315, avg=345.99, stdev=959.72 clat (msec): min=70, max=424, avg=227.35, stdev=61.78 lat (msec): min=70, max=424, avg=227.69, stdev=61.81 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 138], 10.00th=[ 150], 20.00th=[ 171], | 30.00th=[ 190], 40.00th=[ 209], 50.00th=[ 224], 60.00th=[ 241], | 70.00th=[ 255], 80.00th=[ 279], 90.00th=[ 317], 95.00th=[ 342], | 99.00th=[ 376], 99.50th=[ 384], 99.90th=[ 418], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 61, max= 223, per=24.52%, avg=138.05, stdev=38.73, samples=73 iops : min= 15, max= 55, avg=34.04, stdev= 9.72, samples=73 lat (msec) : 50=0.08%, 100=0.47%, 250=69.02%, 500=30.43% cpu : usr=0.20%, sys=1.71%, ctx=4257, 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=541KiB/s (554kB/s), 135KiB/s-137KiB/s (138kB/s-140kB/s), io=19.6MiB (20.5MB), run=36864-37073msec WRITE: bw=564KiB/s (577kB/s), 140KiB/s-143KiB/s (143kB/s-146kB/s), io=20.4MiB (21.4MB), run=36864-37073msec 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=179796: Tue Aug 11 01:14:43 2026 read: IOPS=2, BW=87.5MiB/s (91.8MB/s)(40.0MiB/457msec) slat (nsec): min=32867k, max=32867k, avg=32867028.00, stdev= 0.00 clat (nsec): min=396457k, max=396457k, avg=396457134.00, stdev= 0.00 lat (nsec): min=429328k, max=429328k, avg=429328206.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.85%, ctx=11, 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=87.5MiB/s (91.8MB/s), 87.5MiB/s-87.5MiB/s (91.8MB/s-91.8MB/s), io=40.0MiB (41.9MB), run=457-457msec 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