== sanity test 398c: run fio to test AIO ================= 04:35:45 (1787387745) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.797229 s, 52.6 MB/s osc.lustre-OST0000-osc-ffff8c9d19289000.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=180631: Sat Aug 22 04:36:28 2026 write: IOPS=81, BW=327KiB/s (334kB/s)(10.0MiB/31362msec); 0 zone resets slat (usec): min=50, max=19713, avg=340.58, stdev=952.77 clat (msec): min=16, max=364, avg=194.98, stdev=47.70 lat (msec): min=16, max=364, avg=195.33, stdev=47.72 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 128], 10.00th=[ 140], 20.00th=[ 159], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 213], 80.00th=[ 232], 90.00th=[ 255], 95.00th=[ 288], | 99.00th=[ 334], 99.50th=[ 351], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 166, max= 487, per=24.90%, avg=324.95, stdev=64.12, samples=62 iops : min= 41, max= 121, avg=80.84, stdev=16.02, samples=62 lat (msec) : 20=0.04%, 50=0.04%, 100=1.25%, 250=86.72%, 500=11.95% cpu : usr=0.18%, sys=1.24%, ctx=2925, 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=180632: Sat Aug 22 04:36:28 2026 write: IOPS=81, BW=326KiB/s (334kB/s)(10.0MiB/31374msec); 0 zone resets slat (usec): min=49, max=15222, avg=315.30, stdev=842.31 clat (msec): min=23, max=353, avg=194.95, stdev=45.93 lat (msec): min=23, max=353, avg=195.27, stdev=45.92 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 131], 10.00th=[ 142], 20.00th=[ 157], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 211], 80.00th=[ 228], 90.00th=[ 255], 95.00th=[ 284], | 99.00th=[ 334], 99.50th=[ 347], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 160, max= 479, per=24.93%, avg=325.34, stdev=67.38, samples=62 iops : min= 40, max= 119, avg=80.95, stdev=16.82, samples=62 lat (msec) : 50=0.08%, 100=0.31%, 250=88.28%, 500=11.33% cpu : usr=0.14%, sys=1.04%, ctx=2310, 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=180633: Sat Aug 22 04:36:28 2026 write: IOPS=82, BW=329KiB/s (336kB/s)(10.0MiB/31167msec); 0 zone resets slat (usec): min=50, max=16071, avg=384.44, stdev=1048.72 clat (msec): min=24, max=362, avg=194.20, stdev=48.13 lat (msec): min=24, max=362, avg=194.59, stdev=48.15 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 127], 10.00th=[ 140], 20.00th=[ 157], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 201], | 70.00th=[ 213], 80.00th=[ 230], 90.00th=[ 257], 95.00th=[ 284], | 99.00th=[ 334], 99.50th=[ 342], 99.90th=[ 355], 99.95th=[ 359], | 99.99th=[ 363] bw ( KiB/s): min= 192, max= 471, per=25.18%, avg=328.62, stdev=61.68, samples=61 iops : min= 48, max= 117, avg=81.77, stdev=15.42, samples=61 lat (msec) : 50=0.23%, 100=1.05%, 250=86.99%, 500=11.72% cpu : usr=0.23%, sys=1.35%, ctx=3203, 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=180634: Sat Aug 22 04:36:28 2026 write: IOPS=81, BW=327KiB/s (335kB/s)(10.0MiB/31331msec); 0 zone resets slat (usec): min=51, max=17431, avg=275.57, stdev=691.82 clat (msec): min=99, max=352, avg=194.82, stdev=46.93 lat (msec): min=99, max=352, avg=195.10, stdev=46.94 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 131], 10.00th=[ 142], 20.00th=[ 155], | 30.00th=[ 169], 40.00th=[ 182], 50.00th=[ 190], 60.00th=[ 199], | 70.00th=[ 213], 80.00th=[ 228], 90.00th=[ 255], 95.00th=[ 284], | 99.00th=[ 347], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 200, max= 462, per=24.89%, avg=324.87, stdev=60.54, samples=62 iops : min= 50, max= 115, avg=80.85, stdev=15.12, samples=62 lat (msec) : 100=0.08%, 250=88.71%, 500=11.21% cpu : usr=0.17%, sys=1.05%, ctx=2286, 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 Run status group 0 (all jobs): WRITE: bw=1306KiB/s (1337kB/s), 326KiB/s-329KiB/s (334kB/s-336kB/s), io=40.0MiB (41.9MB), run=31167-31374msec 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=180650: Sat Aug 22 04:37:15 2026 read: IOPS=32, BW=131KiB/s (135kB/s)(5048KiB/38412msec) slat (usec): min=3179, max=74993, avg=16799.60, stdev=9357.41 clat (msec): min=53, max=468, avg=228.19, stdev=60.20 lat (msec): min=59, max=492, avg=245.00, stdev=62.19 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 146], 10.00th=[ 161], 20.00th=[ 178], | 30.00th=[ 194], 40.00th=[ 207], 50.00th=[ 220], 60.00th=[ 236], | 70.00th=[ 251], 80.00th=[ 275], 90.00th=[ 305], 95.00th=[ 338], | 99.00th=[ 414], 99.50th=[ 435], 99.90th=[ 464], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 64, max= 207, per=25.11%, avg=131.07, stdev=34.49, samples=75 iops : min= 16, max= 51, avg=32.27, stdev= 8.64, samples=75 write: IOPS=33, BW=135KiB/s (138kB/s)(5192KiB/38412msec); 0 zone resets slat (usec): min=58, max=19133, avg=374.31, stdev=1156.03 clat (msec): min=103, max=446, avg=231.35, stdev=52.78 lat (msec): min=103, max=451, avg=231.72, stdev=52.77 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 155], 10.00th=[ 169], 20.00th=[ 188], | 30.00th=[ 201], 40.00th=[ 213], 50.00th=[ 228], 60.00th=[ 241], | 70.00th=[ 253], 80.00th=[ 275], 90.00th=[ 296], 95.00th=[ 326], | 99.00th=[ 384], 99.50th=[ 393], 99.90th=[ 439], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 55, max= 213, per=24.88%, avg=135.08, stdev=35.48, samples=75 iops : min= 13, max= 53, avg=33.25, stdev= 9.00, samples=75 lat (msec) : 100=0.12%, 250=68.28%, 500=31.60% cpu : usr=0.23%, sys=1.84%, ctx=4405, 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=180651: Sat Aug 22 04:37:15 2026 read: IOPS=32, BW=130KiB/s (133kB/s)(4976KiB/38209msec) slat (usec): min=2697, max=79719, avg=16945.74, stdev=9979.15 clat (msec): min=45, max=512, avg=228.13, stdev=59.54 lat (msec): min=49, max=536, avg=245.08, stdev=62.10 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 150], 10.00th=[ 161], 20.00th=[ 178], | 30.00th=[ 192], 40.00th=[ 207], 50.00th=[ 220], 60.00th=[ 234], | 70.00th=[ 253], 80.00th=[ 275], 90.00th=[ 309], 95.00th=[ 338], | 99.00th=[ 397], 99.50th=[ 426], 99.90th=[ 493], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 78, max= 200, per=24.89%, avg=129.91, stdev=30.29, samples=75 iops : min= 19, max= 50, avg=31.95, stdev= 7.64, samples=75 write: IOPS=34, BW=138KiB/s (141kB/s)(5264KiB/38209msec); 0 zone resets slat (usec): min=50, max=24538, avg=345.61, stdev=1194.75 clat (msec): min=94, max=549, avg=229.62, stdev=58.84 lat (msec): min=99, max=549, avg=229.96, stdev=58.88 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 148], 10.00th=[ 165], 20.00th=[ 184], | 30.00th=[ 197], 40.00th=[ 209], 50.00th=[ 222], 60.00th=[ 236], | 70.00th=[ 251], 80.00th=[ 271], 90.00th=[ 305], 95.00th=[ 342], | 99.00th=[ 414], 99.50th=[ 443], 99.90th=[ 531], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 63, max= 230, per=25.31%, avg=137.43, stdev=38.52, samples=75 iops : min= 15, max= 57, avg=33.84, stdev= 9.67, samples=75 lat (msec) : 50=0.04%, 100=0.16%, 250=68.98%, 500=30.70%, 750=0.12% cpu : usr=0.27%, sys=1.73%, ctx=4503, 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=180652: Sat Aug 22 04:37:15 2026 read: IOPS=32, BW=130KiB/s (133kB/s)(4984KiB/38280msec) slat (usec): min=58, max=76830, avg=16784.46, stdev=10001.26 clat (msec): min=38, max=466, avg=226.28, stdev=58.63 lat (msec): min=75, max=504, avg=243.07, stdev=61.33 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 148], 10.00th=[ 161], 20.00th=[ 180], | 30.00th=[ 192], 40.00th=[ 205], 50.00th=[ 218], 60.00th=[ 230], | 70.00th=[ 247], 80.00th=[ 271], 90.00th=[ 309], 95.00th=[ 338], | 99.00th=[ 397], 99.50th=[ 422], 99.90th=[ 456], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 55, max= 228, per=24.96%, avg=130.27, stdev=37.67, samples=75 iops : min= 13, max= 57, avg=32.07, stdev= 9.51, samples=75 write: IOPS=34, BW=137KiB/s (141kB/s)(5256KiB/38280msec); 0 zone resets slat (usec): min=56, max=12015, avg=326.66, stdev=862.17 clat (msec): min=52, max=507, avg=234.47, stdev=58.09 lat (msec): min=52, max=507, avg=234.80, stdev=58.10 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 157], 10.00th=[ 171], 20.00th=[ 188], | 30.00th=[ 201], 40.00th=[ 213], 50.00th=[ 226], 60.00th=[ 239], | 70.00th=[ 255], 80.00th=[ 279], 90.00th=[ 313], 95.00th=[ 351], | 99.00th=[ 393], 99.50th=[ 418], 99.90th=[ 485], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 56, max= 223, per=25.14%, avg=136.49, stdev=35.00, samples=75 iops : min= 14, max= 55, avg=33.63, stdev= 8.79, samples=75 lat (msec) : 50=0.04%, 100=0.04%, 250=69.53%, 500=30.35%, 750=0.04% cpu : usr=0.23%, sys=1.71%, ctx=4207, 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=180653: Sat Aug 22 04:37:15 2026 read: IOPS=32, BW=132KiB/s (135kB/s)(5060KiB/38403msec) slat (usec): min=3050, max=64025, avg=16676.26, stdev=9506.25 clat (msec): min=86, max=494, avg=228.89, stdev=59.85 lat (msec): min=102, max=504, avg=245.58, stdev=61.88 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 148], 10.00th=[ 161], 20.00th=[ 180], | 30.00th=[ 194], 40.00th=[ 207], 50.00th=[ 218], 60.00th=[ 234], | 70.00th=[ 253], 80.00th=[ 275], 90.00th=[ 309], 95.00th=[ 338], | 99.00th=[ 418], 99.50th=[ 435], 99.90th=[ 460], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 71, max= 207, per=25.25%, avg=131.83, stdev=31.19, samples=75 iops : min= 17, max= 51, avg=32.44, stdev= 7.89, samples=75 write: IOPS=33, BW=135KiB/s (138kB/s)(5180KiB/38403msec); 0 zone resets slat (usec): min=54, max=14185, avg=389.07, stdev=1100.22 clat (msec): min=113, max=473, avg=230.93, stdev=54.21 lat (msec): min=114, max=475, avg=231.32, stdev=54.23 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 157], 10.00th=[ 169], 20.00th=[ 186], | 30.00th=[ 201], 40.00th=[ 213], 50.00th=[ 226], 60.00th=[ 239], | 70.00th=[ 251], 80.00th=[ 275], 90.00th=[ 300], 95.00th=[ 334], | 99.00th=[ 393], 99.50th=[ 414], 99.90th=[ 464], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 39, max= 223, per=24.76%, avg=134.45, stdev=37.04, samples=75 iops : min= 9, max= 55, avg=33.11, stdev= 9.30, samples=75 lat (msec) : 100=0.08%, 250=69.06%, 500=30.86% cpu : usr=0.22%, sys=1.73%, ctx=4206, 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=522KiB/s (535kB/s), 130KiB/s-132KiB/s (133kB/s-135kB/s), io=19.6MiB (20.5MB), run=38209-38412msec WRITE: bw=544KiB/s (557kB/s), 135KiB/s-138KiB/s (138kB/s-141kB/s), io=20.4MiB (21.4MB), run=38209-38412msec 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=180663: Sat Aug 22 04:37:27 2026 read: IOPS=1, BW=71.2MiB/s (74.6MB/s)(40.0MiB/562msec) slat (nsec): min=26370k, max=26370k, avg=26370188.00, stdev= 0.00 clat (nsec): min=505497k, max=505497k, avg=505497010.00, stdev= 0.00 lat (nsec): min=531873k, max=531873k, avg=531872845.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.78%, ctx=5, 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=71.2MiB/s (74.6MB/s), 71.2MiB/s-71.2MiB/s (74.6MB/s-74.6MB/s), io=40.0MiB (41.9MB), run=562-562msec 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