== sanity test 398c: run fio to test AIO ================= 07:27:09 (1787398029) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.601048 s, 69.8 MB/s osc.lustre-OST0000-osc-ffff907c10a93000.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=147263: Sat Aug 22 07:29:34 2026 write: IOPS=19, BW=76.5KiB/s (78.4kB/s)(10.0MiB/133827msec); 0 zone resets slat (usec): min=38, max=31897, avg=374.73, stdev=1144.55 clat (msec): min=247, max=1894, avg=834.64, stdev=220.94 lat (msec): min=248, max=1894, avg=835.02, stdev=220.93 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 510], 10.00th=[ 575], 20.00th=[ 659], | 30.00th=[ 726], 40.00th=[ 776], 50.00th=[ 818], 60.00th=[ 860], | 70.00th=[ 911], 80.00th=[ 969], 90.00th=[ 1099], 95.00th=[ 1234], | 99.00th=[ 1586], 99.50th=[ 1636], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 7, max= 168, per=25.05%, avg=76.41, stdev=27.91, samples=264 iops : min= 1, max= 42, avg=18.62, stdev= 7.01, samples=264 lat (msec) : 250=0.31%, 500=3.79%, 750=30.78%, 1000=47.81%, 2000=17.30% cpu : usr=0.06%, sys=0.39%, ctx=2294, 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=147264: Sat Aug 22 07:29:34 2026 write: IOPS=19, BW=76.5KiB/s (78.3kB/s)(10.0MiB/133905msec); 0 zone resets slat (usec): min=37, max=16012, avg=310.08, stdev=926.54 clat (msec): min=126, max=1703, avg=835.53, stdev=221.98 lat (msec): min=126, max=1704, avg=835.84, stdev=221.97 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 514], 10.00th=[ 584], 20.00th=[ 667], | 30.00th=[ 726], 40.00th=[ 776], 50.00th=[ 818], 60.00th=[ 860], | 70.00th=[ 911], 80.00th=[ 978], 90.00th=[ 1099], 95.00th=[ 1250], | 99.00th=[ 1603], 99.50th=[ 1636], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 184, per=25.34%, avg=77.29, stdev=32.57, samples=261 iops : min= 1, max= 46, avg=18.84, stdev= 8.18, samples=261 lat (msec) : 250=0.04%, 500=3.91%, 750=31.37%, 1000=46.56%, 2000=18.12% cpu : usr=0.06%, sys=0.37%, ctx=1708, 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=147265: Sat Aug 22 07:29:34 2026 write: IOPS=19, BW=76.9KiB/s (78.7kB/s)(10.0MiB/133236msec); 0 zone resets slat (usec): min=35, max=16828, avg=339.29, stdev=997.76 clat (msec): min=55, max=1686, avg=831.81, stdev=218.38 lat (msec): min=55, max=1686, avg=832.15, stdev=218.35 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 510], 10.00th=[ 575], 20.00th=[ 659], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 818], 60.00th=[ 869], | 70.00th=[ 919], 80.00th=[ 986], 90.00th=[ 1083], 95.00th=[ 1234], | 99.00th=[ 1536], 99.50th=[ 1586], 99.90th=[ 1653], 99.95th=[ 1670], | 99.99th=[ 1687] bw ( KiB/s): min= 16, max= 147, per=25.05%, avg=76.41, stdev=26.79, samples=264 iops : min= 4, max= 36, avg=18.63, stdev= 6.73, samples=264 lat (msec) : 100=0.04%, 250=0.16%, 500=4.22%, 750=31.64%, 1000=46.05% lat (msec) : 2000=17.89% cpu : usr=0.06%, sys=0.39%, ctx=2048, 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=147266: Sat Aug 22 07:29:34 2026 write: IOPS=19, BW=76.5KiB/s (78.3kB/s)(10.0MiB/133900msec); 0 zone resets slat (usec): min=36, max=11091, avg=312.32, stdev=761.40 clat (msec): min=356, max=1700, avg=835.13, stdev=212.74 lat (msec): min=357, max=1700, avg=835.44, stdev=212.75 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 523], 10.00th=[ 575], 20.00th=[ 667], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 818], 60.00th=[ 869], | 70.00th=[ 919], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1250], | 99.00th=[ 1469], 99.50th=[ 1569], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 159, per=25.15%, avg=76.71, stdev=33.34, samples=263 iops : min= 1, max= 39, avg=18.70, stdev= 8.37, samples=263 lat (msec) : 500=4.14%, 750=30.59%, 1000=47.19%, 2000=18.09% cpu : usr=0.07%, sys=0.37%, ctx=2098, 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=306KiB/s (313kB/s), 76.5KiB/s-76.9KiB/s (78.3kB/s-78.7kB/s), io=40.0MiB (41.9MB), run=133236-133905msec 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=147296: Sat Aug 22 07:31:24 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(5048KiB/102222msec) slat (usec): min=3058, max=61898, avg=15381.15, stdev=8744.85 clat (msec): min=10, max=952, avg=397.36, stdev=109.98 lat (msec): min=20, max=973, avg=412.75, stdev=111.64 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 253], 10.00th=[ 284], 20.00th=[ 313], | 30.00th=[ 338], 40.00th=[ 363], 50.00th=[ 388], 60.00th=[ 409], | 70.00th=[ 439], 80.00th=[ 464], 90.00th=[ 514], 95.00th=[ 592], | 99.00th=[ 776], 99.50th=[ 844], 99.90th=[ 944], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 119, per=24.97%, avg=48.94, stdev=23.93, samples=202 iops : min= 1, max= 29, avg=11.72, stdev= 5.99, samples=202 write: IOPS=12, BW=50.8KiB/s (52.0kB/s)(5192KiB/102222msec); 0 zone resets slat (usec): min=52, max=21912, avg=476.95, stdev=1263.39 clat (msec): min=306, max=1646, avg=855.33, stdev=243.36 lat (msec): min=306, max=1646, avg=855.81, stdev=243.35 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 485], 10.00th=[ 558], 20.00th=[ 651], | 30.00th=[ 709], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1062], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1485], 99.50th=[ 1536], 99.90th=[ 1620], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7, max= 127, per=24.71%, avg=50.42, stdev=21.50, samples=202 iops : min= 1, max= 31, avg=12.09, stdev= 5.36, samples=202 lat (msec) : 20=0.04%, 50=0.08%, 100=0.12%, 250=2.11%, 500=43.67% lat (msec) : 750=20.94%, 1000=19.65%, 2000=13.40% cpu : usr=0.14%, sys=0.86%, ctx=4279, 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=147297: Sat Aug 22 07:31:24 2026 read: IOPS=12, BW=48.7KiB/s (49.8kB/s)(4976KiB/102268msec) slat (usec): min=2984, max=74133, avg=15457.44, stdev=8440.65 clat (msec): min=28, max=971, avg=395.71, stdev=107.37 lat (msec): min=40, max=977, avg=411.17, stdev=109.09 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 245], 10.00th=[ 279], 20.00th=[ 313], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 388], 60.00th=[ 418], | 70.00th=[ 443], 80.00th=[ 468], 90.00th=[ 523], 95.00th=[ 584], | 99.00th=[ 735], 99.50th=[ 785], 99.90th=[ 844], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 118, per=24.60%, avg=48.21, stdev=22.25, samples=202 iops : min= 1, max= 29, avg=11.53, stdev= 5.56, samples=202 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(5264KiB/102268msec); 0 zone resets slat (usec): min=52, max=23337, avg=515.55, stdev=1570.33 clat (msec): min=232, max=1688, avg=851.96, stdev=247.64 lat (msec): min=232, max=1688, avg=852.48, stdev=247.69 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 460], 10.00th=[ 542], 20.00th=[ 642], | 30.00th=[ 701], 40.00th=[ 768], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1183], 95.00th=[ 1301], | 99.00th=[ 1485], 99.50th=[ 1536], 99.90th=[ 1586], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 159, per=25.06%, avg=51.11, stdev=21.04, samples=202 iops : min= 1, max= 39, avg=12.27, stdev= 5.28, samples=202 lat (msec) : 50=0.12%, 100=0.31%, 250=2.38%, 500=43.16%, 750=21.13% lat (msec) : 1000=19.65%, 2000=13.24% cpu : usr=0.12%, sys=0.92%, ctx=4543, 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=147298: Sat Aug 22 07:31:24 2026 read: IOPS=12, BW=48.8KiB/s (49.9kB/s)(4984KiB/102230msec) slat (usec): min=2983, max=60091, avg=15356.65, stdev=8406.32 clat (msec): min=6, max=949, avg=397.96, stdev=107.99 lat (msec): min=9, max=967, avg=413.32, stdev=109.41 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 253], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 468], 90.00th=[ 518], 95.00th=[ 584], | 99.00th=[ 768], 99.50th=[ 852], 99.90th=[ 919], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 135, per=24.98%, avg=48.96, stdev=23.19, samples=200 iops : min= 1, max= 33, avg=11.73, stdev= 5.81, samples=200 write: IOPS=12, BW=51.4KiB/s (52.6kB/s)(5256KiB/102230msec); 0 zone resets slat (usec): min=42, max=24296, avg=523.26, stdev=1448.06 clat (msec): min=304, max=1689, avg=849.47, stdev=243.21 lat (msec): min=305, max=1689, avg=850.00, stdev=243.22 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 493], 10.00th=[ 550], 20.00th=[ 634], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 818], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1519], 99.50th=[ 1586], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 127, per=24.94%, avg=50.89, stdev=21.37, samples=202 iops : min= 1, max= 31, avg=12.21, stdev= 5.34, samples=202 lat (msec) : 10=0.04%, 50=0.23%, 100=0.08%, 250=1.95%, 500=43.09% lat (msec) : 750=21.88%, 1000=19.57%, 2000=13.16% cpu : usr=0.12%, sys=0.93%, ctx=4512, 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=147299: Sat Aug 22 07:31:24 2026 read: IOPS=12, BW=49.9KiB/s (51.1kB/s)(5060KiB/101313msec) slat (usec): min=90, max=79141, avg=15049.70, stdev=8414.49 clat (msec): min=30, max=1068, avg=397.71, stdev=116.50 lat (msec): min=30, max=1095, avg=412.77, stdev=118.05 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 247], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 338], 40.00th=[ 363], 50.00th=[ 388], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 472], 90.00th=[ 523], 95.00th=[ 592], | 99.00th=[ 802], 99.50th=[ 877], 99.90th=[ 1036], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 119, per=25.28%, avg=49.55, stdev=22.41, samples=200 iops : min= 1, max= 29, avg=11.87, stdev= 5.58, samples=200 write: IOPS=12, BW=51.1KiB/s (52.4kB/s)(5180KiB/101313msec); 0 zone resets slat (usec): min=48, max=16894, avg=477.79, stdev=1221.36 clat (msec): min=156, max=1692, avg=846.97, stdev=251.91 lat (msec): min=159, max=1692, avg=847.45, stdev=251.89 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 464], 10.00th=[ 531], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 827], 60.00th=[ 911], | 70.00th=[ 978], 80.00th=[ 1053], 90.00th=[ 1167], 95.00th=[ 1301], | 99.00th=[ 1536], 99.50th=[ 1552], 99.90th=[ 1653], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 112, per=24.73%, avg=50.44, stdev=21.46, samples=201 iops : min= 1, max= 28, avg=12.09, stdev= 5.35, samples=201 lat (msec) : 50=0.23%, 100=0.39%, 250=2.23%, 500=43.55%, 750=22.03% lat (msec) : 1000=18.05%, 2000=13.52% cpu : usr=0.13%, sys=0.85%, ctx=4774, 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=196KiB/s (201kB/s), 48.7KiB/s-49.9KiB/s (49.8kB/s-51.1kB/s), io=19.6MiB (20.5MB), run=101313-102268msec WRITE: bw=204KiB/s (209kB/s), 50.8KiB/s-51.5KiB/s (52.0kB/s-52.7kB/s), io=20.4MiB (21.4MB), run=101313-102268msec 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=147317: Sat Aug 22 07:31:34 2026 read: IOPS=1, BW=54.3MiB/s (56.9MB/s)(40.0MiB/737msec) slat (nsec): min=74166k, max=74166k, avg=74165980.00, stdev= 0.00 clat (nsec): min=618930k, max=618930k, avg=618930302.00, stdev= 0.00 lat (nsec): min=693101k, max=693101k, avg=693101052.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.04%, ctx=45, 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=54.3MiB/s (56.9MB/s), 54.3MiB/s-54.3MiB/s (56.9MB/s-56.9MB/s), io=40.0MiB (41.9MB), run=737-737msec 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