== sanity test 398c: run fio to test AIO ================= 06:06:27 (1777025187) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.125032 s, 335 MB/s osc.lustre-OST0000-osc-ffff952e34409000.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=155458: Fri Apr 24 06:06:56 2026 write: IOPS=97, BW=392KiB/s (401kB/s)(10.0MiB/26136msec); 0 zone resets slat (usec): min=35, max=634, avg=192.60, stdev=90.47 clat (msec): min=28, max=266, avg=163.07, stdev=31.92 lat (msec): min=28, max=266, avg=163.27, stdev=31.94 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 111], 10.00th=[ 129], 20.00th=[ 142], | 30.00th=[ 150], 40.00th=[ 159], 50.00th=[ 165], 60.00th=[ 171], | 70.00th=[ 182], 80.00th=[ 190], 90.00th=[ 201], 95.00th=[ 209], | 99.00th=[ 226], 99.50th=[ 230], 99.90th=[ 247], 99.95th=[ 257], | 99.99th=[ 268] bw ( KiB/s): min= 312, max= 760, per=24.90%, avg=390.12, stdev=66.23, samples=51 iops : min= 78, max= 190, avg=97.53, stdev=16.56, samples=51 lat (msec) : 50=0.62%, 100=3.52%, 250=95.78%, 500=0.08% cpu : usr=0.18%, sys=1.53%, ctx=2690, 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=155459: Fri Apr 24 06:06:56 2026 write: IOPS=97, BW=392KiB/s (401kB/s)(10.0MiB/26136msec); 0 zone resets slat (usec): min=40, max=845, avg=198.95, stdev=85.27 clat (msec): min=53, max=247, avg=162.98, stdev=30.59 lat (msec): min=54, max=247, avg=163.18, stdev=30.60 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 111], 10.00th=[ 130], 20.00th=[ 142], | 30.00th=[ 150], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 180], 80.00th=[ 190], 90.00th=[ 201], 95.00th=[ 207], | 99.00th=[ 226], 99.50th=[ 234], 99.90th=[ 245], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 296, max= 715, per=24.85%, avg=389.39, stdev=63.37, samples=51 iops : min= 74, max= 178, avg=97.33, stdev=15.77, samples=51 lat (msec) : 100=3.91%, 250=96.09% cpu : usr=0.19%, sys=1.58%, ctx=2779, 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=155460: Fri Apr 24 06:06:56 2026 write: IOPS=97, BW=392KiB/s (401kB/s)(10.0MiB/26136msec); 0 zone resets slat (usec): min=47, max=685, avg=202.13, stdev=82.25 clat (msec): min=49, max=266, avg=162.94, stdev=30.73 lat (msec): min=49, max=266, avg=163.14, stdev=30.74 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 111], 10.00th=[ 128], 20.00th=[ 142], | 30.00th=[ 150], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 180], 80.00th=[ 188], 90.00th=[ 199], 95.00th=[ 207], | 99.00th=[ 226], 99.50th=[ 232], 99.90th=[ 247], 99.95th=[ 249], | 99.99th=[ 268] bw ( KiB/s): min= 296, max= 715, per=24.91%, avg=390.33, stdev=62.53, samples=51 iops : min= 74, max= 178, avg=97.57, stdev=15.56, samples=51 lat (msec) : 50=0.04%, 100=3.95%, 250=95.98%, 500=0.04% cpu : usr=0.18%, sys=1.61%, ctx=2843, 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=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=155461: Fri Apr 24 06:06:56 2026 write: IOPS=98, BW=392KiB/s (402kB/s)(10.0MiB/26106msec); 0 zone resets slat (usec): min=41, max=582, avg=202.06, stdev=82.54 clat (msec): min=16, max=347, avg=162.80, stdev=32.10 lat (msec): min=16, max=347, avg=163.00, stdev=32.10 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 110], 10.00th=[ 126], 20.00th=[ 140], | 30.00th=[ 150], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 174], | 70.00th=[ 180], 80.00th=[ 190], 90.00th=[ 201], 95.00th=[ 207], | 99.00th=[ 226], 99.50th=[ 232], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 347] bw ( KiB/s): min= 304, max= 747, per=24.94%, avg=390.80, stdev=65.09, samples=51 iops : min= 76, max= 186, avg=97.69, stdev=16.19, samples=51 lat (msec) : 20=0.12%, 50=0.47%, 100=3.67%, 250=95.70%, 500=0.04% cpu : usr=0.18%, sys=1.63%, ctx=2947, 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=1567KiB/s (1605kB/s), 392KiB/s-392KiB/s (401kB/s-402kB/s), io=40.0MiB (41.9MB), run=26106-26136msec 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=155474: Fri Apr 24 06:07:16 2026 read: IOPS=70, BW=283KiB/s (290kB/s)(5048KiB/17822msec) slat (usec): min=952, max=5838, avg=2174.55, stdev=630.99 clat (msec): min=3, max=136, avg=70.30, stdev=13.06 lat (msec): min=4, max=138, avg=72.47, stdev=13.10 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 51], 10.00th=[ 56], 20.00th=[ 62], | 30.00th=[ 65], 40.00th=[ 68], 50.00th=[ 71], 60.00th=[ 74], | 70.00th=[ 78], 80.00th=[ 80], 90.00th=[ 85], 95.00th=[ 89], | 99.00th=[ 97], 99.50th=[ 110], 99.90th=[ 136], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 192, max= 359, per=25.26%, avg=283.63, stdev=48.94, samples=35 iops : min= 48, max= 89, avg=70.89, stdev=12.20, samples=35 write: IOPS=72, BW=291KiB/s (298kB/s)(5192KiB/17822msec); 0 zone resets slat (usec): min=40, max=1194, avg=185.95, stdev=92.58 clat (msec): min=36, max=255, avg=148.60, stdev=30.12 lat (msec): min=36, max=256, avg=148.79, stdev=30.12 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 101], 10.00th=[ 111], 20.00th=[ 125], | 30.00th=[ 133], 40.00th=[ 140], 50.00th=[ 146], 60.00th=[ 155], | 70.00th=[ 165], 80.00th=[ 176], 90.00th=[ 188], 95.00th=[ 201], | 99.00th=[ 215], 99.50th=[ 230], 99.90th=[ 255], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 232, max= 352, per=24.85%, avg=290.51, stdev=33.78, samples=35 iops : min= 58, max= 88, avg=72.60, stdev= 8.47, samples=35 lat (msec) : 4=0.16%, 10=0.04%, 20=0.31%, 50=1.68%, 100=49.22% lat (msec) : 250=48.40%, 500=0.20% cpu : usr=0.21%, sys=2.44%, ctx=4967, 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=155475: Fri Apr 24 06:07:16 2026 read: IOPS=69, BW=280KiB/s (286kB/s)(4976KiB/17799msec) slat (usec): min=49, max=4568, avg=2159.73, stdev=621.32 clat (msec): min=3, max=166, avg=69.93, stdev=13.58 lat (msec): min=4, max=169, avg=72.09, stdev=13.63 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 52], 10.00th=[ 56], 20.00th=[ 61], | 30.00th=[ 65], 40.00th=[ 67], 50.00th=[ 70], 60.00th=[ 74], | 70.00th=[ 78], 80.00th=[ 80], 90.00th=[ 85], 95.00th=[ 89], | 99.00th=[ 104], 99.50th=[ 109], 99.90th=[ 165], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 176, max= 376, per=24.89%, avg=279.51, stdev=54.63, samples=35 iops : min= 44, max= 94, avg=69.86, stdev=13.63, samples=35 write: IOPS=73, BW=296KiB/s (303kB/s)(5264KiB/17799msec); 0 zone resets slat (usec): min=49, max=2090, avg=176.87, stdev=92.23 clat (msec): min=22, max=250, avg=147.90, stdev=32.28 lat (msec): min=22, max=250, avg=148.08, stdev=32.29 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 99], 10.00th=[ 109], 20.00th=[ 124], | 30.00th=[ 133], 40.00th=[ 142], 50.00th=[ 146], 60.00th=[ 155], | 70.00th=[ 163], 80.00th=[ 174], 90.00th=[ 188], 95.00th=[ 203], | 99.00th=[ 222], 99.50th=[ 234], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 216, max= 376, per=25.27%, avg=295.43, stdev=34.74, samples=35 iops : min= 54, max= 94, avg=73.83, stdev= 8.70, samples=35 lat (msec) : 4=0.08%, 10=0.08%, 20=0.27%, 50=1.84%, 100=48.91% lat (msec) : 250=48.75%, 500=0.08% cpu : usr=0.25%, sys=2.38%, ctx=4899, majf=1, 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=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=155476: Fri Apr 24 06:07:16 2026 read: IOPS=69, BW=279KiB/s (286kB/s)(4984KiB/17862msec) slat (usec): min=1049, max=5004, avg=2193.83, stdev=622.29 clat (msec): min=3, max=109, avg=70.21, stdev=12.61 lat (msec): min=6, max=111, avg=72.41, stdev=12.64 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 52], 10.00th=[ 56], 20.00th=[ 62], | 30.00th=[ 65], 40.00th=[ 68], 50.00th=[ 71], 60.00th=[ 74], | 70.00th=[ 78], 80.00th=[ 81], 90.00th=[ 86], 95.00th=[ 90], | 99.00th=[ 95], 99.50th=[ 99], 99.90th=[ 106], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 152, max= 424, per=24.83%, avg=278.83, stdev=61.08, samples=35 iops : min= 38, max= 106, avg=69.69, stdev=15.26, samples=35 write: IOPS=73, BW=294KiB/s (301kB/s)(5256KiB/17862msec); 0 zone resets slat (usec): min=41, max=700, avg=178.49, stdev=79.40 clat (msec): min=30, max=258, avg=148.21, stdev=31.94 lat (msec): min=30, max=259, avg=148.39, stdev=31.94 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 99], 10.00th=[ 108], 20.00th=[ 125], | 30.00th=[ 133], 40.00th=[ 140], 50.00th=[ 146], 60.00th=[ 157], | 70.00th=[ 165], 80.00th=[ 176], 90.00th=[ 188], 95.00th=[ 201], | 99.00th=[ 218], 99.50th=[ 224], 99.90th=[ 255], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 208, max= 352, per=24.83%, avg=290.26, stdev=30.88, samples=35 iops : min= 52, max= 88, avg=72.54, stdev= 7.71, samples=35 lat (msec) : 4=0.04%, 10=0.12%, 20=0.35%, 50=1.68%, 100=49.45% lat (msec) : 250=48.28%, 500=0.08% cpu : usr=0.20%, sys=2.46%, ctx=4880, majf=0, minf=16 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=155477: Fri Apr 24 06:07:16 2026 read: IOPS=71, BW=284KiB/s (291kB/s)(5060KiB/17811msec) slat (usec): min=1042, max=5793, avg=2187.99, stdev=627.18 clat (msec): min=10, max=126, avg=70.34, stdev=13.13 lat (msec): min=12, max=130, avg=72.53, stdev=13.15 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 53], 10.00th=[ 57], 20.00th=[ 62], | 30.00th=[ 65], 40.00th=[ 68], 50.00th=[ 71], 60.00th=[ 74], | 70.00th=[ 78], 80.00th=[ 81], 90.00th=[ 86], 95.00th=[ 89], | 99.00th=[ 100], 99.50th=[ 113], 99.90th=[ 125], 99.95th=[ 127], | 99.99th=[ 127] bw ( KiB/s): min= 176, max= 392, per=25.41%, avg=285.40, stdev=49.14, samples=35 iops : min= 44, max= 98, avg=71.31, stdev=12.29, samples=35 write: IOPS=72, BW=291KiB/s (298kB/s)(5180KiB/17811msec); 0 zone resets slat (usec): min=45, max=843, avg=177.87, stdev=81.90 clat (msec): min=31, max=255, avg=148.66, stdev=31.11 lat (msec): min=31, max=255, avg=148.84, stdev=31.11 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 101], 10.00th=[ 113], 20.00th=[ 125], | 30.00th=[ 133], 40.00th=[ 140], 50.00th=[ 148], 60.00th=[ 157], | 70.00th=[ 165], 80.00th=[ 176], 90.00th=[ 188], 95.00th=[ 201], | 99.00th=[ 226], 99.50th=[ 232], 99.90th=[ 251], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 232, max= 352, per=24.73%, avg=289.14, stdev=29.91, samples=35 iops : min= 58, max= 88, avg=72.26, stdev= 7.46, samples=35 lat (msec) : 20=0.62%, 50=1.48%, 100=49.34%, 250=48.48%, 500=0.08% cpu : usr=0.26%, sys=2.36%, ctx=4978, 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=1124KiB/s (1150kB/s), 279KiB/s-284KiB/s (286kB/s-291kB/s), io=19.6MiB (20.5MB), run=17799-17862msec WRITE: bw=1170KiB/s (1198kB/s), 291KiB/s-296KiB/s (298kB/s-303kB/s), io=20.4MiB (21.4MB), run=17799-17862msec 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=155483: Fri Apr 24 06:07:20 2026 read: IOPS=9, BW=396MiB/s (415MB/s)(40.0MiB/101msec) slat (nsec): min=9104.5k, max=9104.5k, avg=9104453.00, stdev= 0.00 clat (nsec): min=87359k, max=87359k, avg=87358621.00, stdev= 0.00 lat (nsec): min=96490k, max=96490k, avg=96490029.00, stdev= 0.00 clat percentiles (usec): | 1.00th=[87557], 5.00th=[87557], 10.00th=[87557], 20.00th=[87557], | 30.00th=[87557], 40.00th=[87557], 50.00th=[87557], 60.00th=[87557], | 70.00th=[87557], 80.00th=[87557], 90.00th=[87557], 95.00th=[87557], | 99.00th=[87557], 99.50th=[87557], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] lat (msec) : 100=100.00% cpu : usr=0.00%, sys=6.93%, ctx=40, 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=396MiB/s (415MB/s), 396MiB/s-396MiB/s (415MB/s-415MB/s), io=40.0MiB (41.9MB), run=101-101msec 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