== sanity test 398c: run fio to test AIO ================= 15:41:43 (1788205303) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.454729 s, 92.2 MB/s osc.lustre-OST0000-osc-ffff9a96888ed000.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=180271: Mon Aug 31 15:42:22 2026 write: IOPS=90, BW=363KiB/s (372kB/s)(10.0MiB/28199msec); 0 zone resets slat (usec): min=28, max=15260, avg=210.94, stdev=793.91 clat (msec): min=30, max=503, avg=175.79, stdev=42.58 lat (msec): min=30, max=503, avg=176.01, stdev=42.58 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 120], 10.00th=[ 129], 20.00th=[ 144], | 30.00th=[ 155], 40.00th=[ 161], 50.00th=[ 171], 60.00th=[ 182], | 70.00th=[ 194], 80.00th=[ 207], 90.00th=[ 226], 95.00th=[ 245], | 99.00th=[ 279], 99.50th=[ 376], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 506] bw ( KiB/s): min= 143, max= 526, per=25.03%, avg=361.18, stdev=69.42, samples=56 iops : min= 35, max= 131, avg=89.86, stdev=17.39, samples=56 lat (msec) : 50=0.16%, 100=1.29%, 250=94.80%, 500=3.71%, 750=0.04% cpu : usr=0.19%, sys=0.93%, ctx=2795, 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=180272: Mon Aug 31 15:42:22 2026 write: IOPS=90, BW=361KiB/s (370kB/s)(10.0MiB/28373msec); 0 zone resets slat (usec): min=29, max=10782, avg=182.02, stdev=636.09 clat (msec): min=87, max=296, avg=176.29, stdev=37.79 lat (msec): min=87, max=296, avg=176.48, stdev=37.82 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 121], 10.00th=[ 130], 20.00th=[ 144], | 30.00th=[ 155], 40.00th=[ 163], 50.00th=[ 174], 60.00th=[ 182], | 70.00th=[ 192], 80.00th=[ 209], 90.00th=[ 228], 95.00th=[ 245], | 99.00th=[ 275], 99.50th=[ 288], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 235, max= 598, per=24.96%, avg=360.14, stdev=70.93, samples=56 iops : min= 58, max= 149, avg=89.59, stdev=17.80, samples=56 lat (msec) : 100=0.39%, 250=95.66%, 500=3.95% cpu : usr=0.16%, sys=0.85%, ctx=2398, 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=180273: Mon Aug 31 15:42:22 2026 write: IOPS=90, BW=362KiB/s (370kB/s)(10.0MiB/28319msec); 0 zone resets slat (usec): min=27, max=15898, avg=199.20, stdev=780.92 clat (msec): min=24, max=398, avg=176.00, stdev=39.07 lat (msec): min=24, max=398, avg=176.20, stdev=39.07 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 121], 10.00th=[ 129], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 163], 50.00th=[ 174], 60.00th=[ 182], | 70.00th=[ 194], 80.00th=[ 207], 90.00th=[ 226], 95.00th=[ 245], | 99.00th=[ 279], 99.50th=[ 305], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 401] bw ( KiB/s): min= 251, max= 510, per=25.00%, avg=360.80, stdev=61.82, samples=56 iops : min= 62, max= 127, avg=89.77, stdev=15.48, samples=56 lat (msec) : 50=0.16%, 100=0.39%, 250=95.59%, 500=3.87% cpu : usr=0.17%, sys=0.92%, ctx=2454, 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=180274: Mon Aug 31 15:42:22 2026 write: IOPS=90, BW=361KiB/s (370kB/s)(10.0MiB/28372msec); 0 zone resets slat (usec): min=23, max=11685, avg=163.48, stdev=629.42 clat (msec): min=97, max=308, avg=176.15, stdev=37.25 lat (msec): min=97, max=308, avg=176.32, stdev=37.25 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 121], 10.00th=[ 128], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 184], | 70.00th=[ 197], 80.00th=[ 209], 90.00th=[ 226], 95.00th=[ 243], | 99.00th=[ 264], 99.50th=[ 271], 99.90th=[ 288], 99.95th=[ 296], | 99.99th=[ 309] bw ( KiB/s): min= 251, max= 557, per=24.89%, avg=359.23, stdev=66.13, samples=56 iops : min= 62, max= 139, avg=89.38, stdev=16.57, samples=56 lat (msec) : 100=0.23%, 250=96.09%, 500=3.67% cpu : usr=0.17%, sys=0.73%, ctx=1462, 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=1444KiB/s (1478kB/s), 361KiB/s-363KiB/s (370kB/s-372kB/s), io=40.0MiB (41.9MB), run=28199-28373msec 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=180289: Mon Aug 31 15:43:04 2026 read: IOPS=39, BW=157KiB/s (161kB/s)(5048KiB/32206msec) slat (usec): min=53, max=82318, avg=13822.85, stdev=8042.96 clat (msec): min=26, max=369, avg=191.02, stdev=49.91 lat (msec): min=27, max=379, avg=204.85, stdev=51.88 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 118], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 163], 40.00th=[ 176], 50.00th=[ 188], 60.00th=[ 203], | 70.00th=[ 215], 80.00th=[ 232], 90.00th=[ 257], 95.00th=[ 279], | 99.00th=[ 313], 99.50th=[ 330], 99.90th=[ 342], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 96, max= 248, per=25.03%, avg=155.42, stdev=34.69, samples=64 iops : min= 24, max= 62, avg=38.38, stdev= 8.75, samples=64 write: IOPS=40, BW=161KiB/s (165kB/s)(5192KiB/32206msec); 0 zone resets slat (usec): min=31, max=23384, avg=214.89, stdev=877.54 clat (msec): min=50, max=359, avg=196.88, stdev=45.13 lat (msec): min=51, max=360, avg=197.10, stdev=45.13 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 127], 10.00th=[ 144], 20.00th=[ 161], | 30.00th=[ 171], 40.00th=[ 182], 50.00th=[ 194], 60.00th=[ 205], | 70.00th=[ 220], 80.00th=[ 234], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 342], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 88, max= 288, per=24.81%, avg=160.25, stdev=40.67, samples=64 iops : min= 22, max= 72, avg=39.61, stdev=10.20, samples=64 lat (msec) : 50=0.20%, 100=1.13%, 250=86.17%, 500=12.50% cpu : usr=0.29%, sys=1.56%, ctx=3976, 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=180290: Mon Aug 31 15:43:04 2026 read: IOPS=38, BW=154KiB/s (158kB/s)(4976KiB/32286msec) slat (usec): min=2636, max=77014, avg=14171.75, stdev=8313.33 clat (msec): min=84, max=349, avg=191.26, stdev=46.92 lat (msec): min=95, max=369, avg=205.44, stdev=48.87 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 124], 10.00th=[ 136], 20.00th=[ 150], | 30.00th=[ 163], 40.00th=[ 176], 50.00th=[ 186], 60.00th=[ 201], | 70.00th=[ 211], 80.00th=[ 230], 90.00th=[ 257], 95.00th=[ 279], | 99.00th=[ 317], 99.50th=[ 326], 99.90th=[ 347], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 47, max= 254, per=24.65%, avg=153.05, stdev=39.88, samples=64 iops : min= 11, max= 63, avg=37.78, stdev=10.04, samples=64 write: IOPS=40, BW=163KiB/s (167kB/s)(5264KiB/32286msec); 0 zone resets slat (usec): min=22, max=9670, avg=185.52, stdev=528.25 clat (msec): min=99, max=368, avg=195.77, stdev=45.23 lat (msec): min=99, max=368, avg=195.96, stdev=45.25 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 132], 10.00th=[ 144], 20.00th=[ 159], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 205], | 70.00th=[ 220], 80.00th=[ 234], 90.00th=[ 259], 95.00th=[ 275], | 99.00th=[ 317], 99.50th=[ 330], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 79, max= 280, per=25.17%, avg=162.58, stdev=41.96, samples=64 iops : min= 19, max= 70, avg=40.19, stdev=10.51, samples=64 lat (msec) : 100=0.43%, 250=86.91%, 500=12.66% cpu : usr=0.22%, sys=1.57%, ctx=3981, 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=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=180291: Mon Aug 31 15:43:04 2026 read: IOPS=38, BW=154KiB/s (158kB/s)(4984KiB/32286msec) slat (usec): min=2516, max=57330, avg=14057.52, stdev=7747.01 clat (msec): min=78, max=337, avg=189.91, stdev=46.78 lat (msec): min=88, max=365, avg=203.98, stdev=48.92 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 123], 10.00th=[ 134], 20.00th=[ 150], | 30.00th=[ 161], 40.00th=[ 174], 50.00th=[ 188], 60.00th=[ 199], | 70.00th=[ 211], 80.00th=[ 230], 90.00th=[ 255], 95.00th=[ 275], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 78, max= 328, per=24.81%, avg=154.06, stdev=44.67, samples=64 iops : min= 19, max= 82, avg=38.05, stdev=11.24, samples=64 write: IOPS=40, BW=163KiB/s (167kB/s)(5256KiB/32286msec); 0 zone resets slat (usec): min=33, max=20973, avg=233.47, stdev=985.35 clat (msec): min=81, max=377, avg=197.02, stdev=44.52 lat (msec): min=81, max=377, avg=197.26, stdev=44.56 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 131], 10.00th=[ 144], 20.00th=[ 159], | 30.00th=[ 174], 40.00th=[ 182], 50.00th=[ 192], 60.00th=[ 205], | 70.00th=[ 218], 80.00th=[ 236], 90.00th=[ 259], 95.00th=[ 275], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 363], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 79, max= 246, per=25.01%, avg=161.58, stdev=38.34, samples=64 iops : min= 19, max= 61, avg=39.94, stdev= 9.56, samples=64 lat (msec) : 100=0.86%, 250=86.84%, 500=12.30% cpu : usr=0.18%, sys=1.68%, ctx=3812, 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=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=180292: Mon Aug 31 15:43:04 2026 read: IOPS=39, BW=157KiB/s (160kB/s)(5060KiB/32299msec) slat (usec): min=2969, max=58803, avg=13795.74, stdev=7553.68 clat (msec): min=59, max=375, avg=191.87, stdev=47.40 lat (msec): min=66, max=380, avg=205.68, stdev=49.26 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 124], 10.00th=[ 133], 20.00th=[ 150], | 30.00th=[ 165], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 213], 80.00th=[ 232], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 317], 99.50th=[ 334], 99.90th=[ 355], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 55, max= 280, per=25.12%, avg=155.97, stdev=37.79, samples=64 iops : min= 13, max= 70, avg=38.52, stdev= 9.48, samples=64 write: IOPS=40, BW=160KiB/s (164kB/s)(5180KiB/32299msec); 0 zone resets slat (usec): min=31, max=8775, avg=186.71, stdev=494.78 clat (msec): min=66, max=384, avg=195.17, stdev=45.01 lat (msec): min=66, max=385, avg=195.35, stdev=45.02 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 127], 10.00th=[ 144], 20.00th=[ 161], | 30.00th=[ 171], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 201], | 70.00th=[ 215], 80.00th=[ 230], 90.00th=[ 255], 95.00th=[ 275], | 99.00th=[ 321], 99.50th=[ 351], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 55, max= 302, per=24.67%, avg=159.36, stdev=44.61, samples=64 iops : min= 13, max= 75, avg=39.38, stdev=11.21, samples=64 lat (msec) : 100=0.78%, 250=87.73%, 500=11.48% cpu : usr=0.20%, sys=1.53%, ctx=3979, 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=621KiB/s (636kB/s), 154KiB/s-157KiB/s (158kB/s-161kB/s), io=19.6MiB (20.5MB), run=32206-32299msec WRITE: bw=647KiB/s (662kB/s), 160KiB/s-163KiB/s (164kB/s-167kB/s), io=20.4MiB (21.4MB), run=32206-32299msec 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=180301: Mon Aug 31 15:43:14 2026 read: IOPS=2, BW=81.5MiB/s (85.4MB/s)(40.0MiB/491msec) slat (nsec): min=40890k, max=40890k, avg=40890029.00, stdev= 0.00 clat (nsec): min=430801k, max=430801k, avg=430800888.00, stdev= 0.00 lat (nsec): min=471716k, max=471716k, avg=471716327.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.45%, ctx=5, majf=0, minf=9 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=81.5MiB/s (85.4MB/s), 81.5MiB/s-81.5MiB/s (85.4MB/s-85.4MB/s), io=40.0MiB (41.9MB), run=491-491msec 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