== sanity test 398c: run fio to test AIO ================= 17:26:17 (1786569977) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.285822 s, 147 MB/s osc.lustre-OST0000-osc-ffff91df89511000.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=181121: Wed Aug 12 17:26:44 2026 write: IOPS=122, BW=491KiB/s (503kB/s)(10.0MiB/20849msec); 0 zone resets slat (usec): min=42, max=10788, avg=302.16, stdev=584.52 clat (msec): min=27, max=206, avg=129.17, stdev=23.07 lat (msec): min=27, max=206, avg=129.47, stdev=23.05 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 91], 10.00th=[ 102], 20.00th=[ 110], | 30.00th=[ 117], 40.00th=[ 124], 50.00th=[ 129], 60.00th=[ 134], | 70.00th=[ 140], 80.00th=[ 146], 90.00th=[ 161], 95.00th=[ 169], | 99.00th=[ 184], 99.50th=[ 188], 99.90th=[ 197], 99.95th=[ 199], | 99.99th=[ 207] bw ( KiB/s): min= 399, max= 640, per=24.94%, avg=489.63, stdev=55.09, samples=41 iops : min= 99, max= 160, avg=122.17, stdev=13.86, samples=41 lat (msec) : 50=0.16%, 100=8.95%, 250=90.90% cpu : usr=0.21%, sys=1.72%, ctx=2832, 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=181122: Wed Aug 12 17:26:44 2026 write: IOPS=122, BW=491KiB/s (503kB/s)(10.0MiB/20864msec); 0 zone resets slat (usec): min=36, max=8020, avg=273.51, stdev=506.51 clat (msec): min=20, max=208, avg=129.12, stdev=22.99 lat (msec): min=20, max=208, avg=129.40, stdev=22.99 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 95], 10.00th=[ 101], 20.00th=[ 109], | 30.00th=[ 116], 40.00th=[ 124], 50.00th=[ 128], 60.00th=[ 134], | 70.00th=[ 140], 80.00th=[ 148], 90.00th=[ 161], 95.00th=[ 169], | 99.00th=[ 188], 99.50th=[ 203], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 384, max= 640, per=24.97%, avg=490.15, stdev=53.74, samples=41 iops : min= 96, max= 160, avg=122.32, stdev=13.50, samples=41 lat (msec) : 50=0.16%, 100=9.80%, 250=90.04% cpu : usr=0.27%, sys=1.60%, ctx=2482, 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=181123: Wed Aug 12 17:26:44 2026 write: IOPS=122, BW=491KiB/s (503kB/s)(10.0MiB/20841msec); 0 zone resets slat (usec): min=51, max=40317, avg=318.06, stdev=950.39 clat (msec): min=11, max=203, avg=129.20, stdev=23.42 lat (msec): min=12, max=203, avg=129.52, stdev=23.36 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 93], 10.00th=[ 103], 20.00th=[ 110], | 30.00th=[ 118], 40.00th=[ 124], 50.00th=[ 129], 60.00th=[ 133], | 70.00th=[ 140], 80.00th=[ 148], 90.00th=[ 161], 95.00th=[ 171], | 99.00th=[ 186], 99.50th=[ 197], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 400, max= 648, per=24.98%, avg=490.37, stdev=53.67, samples=41 iops : min= 100, max= 162, avg=122.37, stdev=13.46, samples=41 lat (msec) : 20=0.04%, 50=0.20%, 100=8.24%, 250=91.52% cpu : usr=0.27%, sys=1.82%, ctx=2864, 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=181124: Wed Aug 12 17:26:44 2026 write: IOPS=123, BW=494KiB/s (506kB/s)(10.0MiB/20738msec); 0 zone resets slat (usec): min=52, max=19477, avg=345.90, stdev=750.71 clat (msec): min=14, max=201, avg=129.13, stdev=22.91 lat (msec): min=14, max=201, avg=129.48, stdev=22.91 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 95], 10.00th=[ 103], 20.00th=[ 110], | 30.00th=[ 117], 40.00th=[ 123], 50.00th=[ 128], 60.00th=[ 134], | 70.00th=[ 140], 80.00th=[ 148], 90.00th=[ 159], 95.00th=[ 171], | 99.00th=[ 184], 99.50th=[ 190], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 203] bw ( KiB/s): min= 384, max= 632, per=25.10%, avg=492.80, stdev=56.03, samples=41 iops : min= 96, max= 158, avg=123.00, stdev=14.02, samples=41 lat (msec) : 20=0.12%, 50=0.16%, 100=7.03%, 250=92.70% cpu : usr=0.23%, sys=2.00%, ctx=2980, 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=1963KiB/s (2010kB/s), 491KiB/s-494KiB/s (503kB/s-506kB/s), io=40.0MiB (41.9MB), run=20738-20864msec 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=181137: Wed Aug 12 17:27:11 2026 read: IOPS=61, BW=247KiB/s (253kB/s)(5048KiB/20449msec) slat (usec): min=2293, max=36568, avg=8977.58, stdev=4153.27 clat (msec): min=59, max=192, avg=120.50, stdev=21.04 lat (msec): min=69, max=198, avg=129.49, stdev=21.67 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 89], 10.00th=[ 95], 20.00th=[ 103], | 30.00th=[ 109], 40.00th=[ 114], 50.00th=[ 120], 60.00th=[ 125], | 70.00th=[ 130], 80.00th=[ 140], 90.00th=[ 150], 95.00th=[ 159], | 99.00th=[ 171], 99.50th=[ 178], 99.90th=[ 188], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 179, max= 312, per=25.03%, avg=245.58, stdev=34.01, samples=40 iops : min= 44, max= 78, avg=61.05, stdev= 8.52, samples=40 write: IOPS=63, BW=254KiB/s (260kB/s)(5192KiB/20449msec); 0 zone resets slat (usec): min=57, max=9961, avg=329.70, stdev=583.98 clat (msec): min=68, max=206, avg=123.77, stdev=20.03 lat (msec): min=68, max=206, avg=124.11, stdev=20.02 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 93], 10.00th=[ 100], 20.00th=[ 107], | 30.00th=[ 113], 40.00th=[ 117], 50.00th=[ 123], 60.00th=[ 128], | 70.00th=[ 134], 80.00th=[ 142], 90.00th=[ 150], 95.00th=[ 161], | 99.00th=[ 174], 99.50th=[ 178], 99.90th=[ 197], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 175, max= 327, per=24.82%, avg=253.42, stdev=36.11, samples=40 iops : min= 43, max= 81, avg=63.00, stdev= 9.03, samples=40 lat (msec) : 100=13.59%, 250=86.41% cpu : usr=0.39%, sys=2.84%, ctx=4844, 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=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=181138: Wed Aug 12 17:27:11 2026 read: IOPS=61, BW=245KiB/s (250kB/s)(4976KiB/20345msec) slat (usec): min=55, max=33420, avg=8869.26, stdev=4086.54 clat (msec): min=15, max=203, avg=119.85, stdev=22.75 lat (msec): min=15, max=209, avg=128.73, stdev=23.32 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 87], 10.00th=[ 93], 20.00th=[ 102], | 30.00th=[ 108], 40.00th=[ 114], 50.00th=[ 120], 60.00th=[ 125], | 70.00th=[ 131], 80.00th=[ 140], 90.00th=[ 150], 95.00th=[ 159], | 99.00th=[ 178], 99.50th=[ 184], 99.90th=[ 197], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 167, max= 352, per=24.81%, avg=243.35, stdev=41.71, samples=40 iops : min= 41, max= 88, avg=60.48, stdev=10.50, samples=40 write: IOPS=64, BW=259KiB/s (265kB/s)(5264KiB/20345msec); 0 zone resets slat (usec): min=56, max=6881, avg=354.15, stdev=592.13 clat (msec): min=36, max=195, avg=124.96, stdev=20.82 lat (msec): min=36, max=195, avg=125.32, stdev=20.85 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 93], 10.00th=[ 101], 20.00th=[ 109], | 30.00th=[ 114], 40.00th=[ 121], 50.00th=[ 126], 60.00th=[ 131], | 70.00th=[ 136], 80.00th=[ 142], 90.00th=[ 150], 95.00th=[ 159], | 99.00th=[ 174], 99.50th=[ 182], 99.90th=[ 194], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 190, max= 318, per=25.32%, avg=258.55, stdev=36.69, samples=40 iops : min= 47, max= 79, avg=64.33, stdev= 9.14, samples=40 lat (msec) : 20=0.12%, 50=0.27%, 100=13.75%, 250=85.86% cpu : usr=0.33%, sys=2.81%, ctx=4782, 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=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=181139: Wed Aug 12 17:27:11 2026 read: IOPS=60, BW=244KiB/s (250kB/s)(4984KiB/20450msec) slat (usec): min=87, max=29308, avg=8926.42, stdev=4094.96 clat (msec): min=33, max=192, avg=121.56, stdev=22.11 lat (msec): min=38, max=204, avg=130.50, stdev=22.60 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 87], 10.00th=[ 94], 20.00th=[ 102], | 30.00th=[ 109], 40.00th=[ 116], 50.00th=[ 122], 60.00th=[ 128], | 70.00th=[ 133], 80.00th=[ 142], 90.00th=[ 153], 95.00th=[ 159], | 99.00th=[ 171], 99.50th=[ 176], 99.90th=[ 184], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 165, max= 318, per=24.83%, avg=243.62, stdev=39.41, samples=40 iops : min= 41, max= 79, avg=60.57, stdev= 9.89, samples=40 write: IOPS=64, BW=257KiB/s (263kB/s)(5256KiB/20450msec); 0 zone resets slat (usec): min=57, max=10694, avg=357.91, stdev=620.98 clat (msec): min=14, max=183, avg=123.67, stdev=20.45 lat (msec): min=19, max=185, avg=124.03, stdev=20.45 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 93], 10.00th=[ 100], 20.00th=[ 107], | 30.00th=[ 113], 40.00th=[ 118], 50.00th=[ 123], 60.00th=[ 128], | 70.00th=[ 134], 80.00th=[ 142], 90.00th=[ 150], 95.00th=[ 159], | 99.00th=[ 169], 99.50th=[ 178], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 168, max= 327, per=24.95%, avg=254.75, stdev=45.65, samples=40 iops : min= 42, max= 81, avg=63.35, stdev=11.39, samples=40 lat (msec) : 20=0.04%, 50=0.08%, 100=14.38%, 250=85.51% cpu : usr=0.33%, sys=2.85%, ctx=4788, 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=181140: Wed Aug 12 17:27:11 2026 read: IOPS=61, BW=248KiB/s (254kB/s)(5060KiB/20416msec) slat (usec): min=62, max=30288, avg=8837.61, stdev=3965.97 clat (msec): min=36, max=205, avg=121.73, stdev=22.04 lat (msec): min=38, max=212, avg=130.58, stdev=22.59 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 88], 10.00th=[ 93], 20.00th=[ 103], | 30.00th=[ 110], 40.00th=[ 116], 50.00th=[ 122], 60.00th=[ 127], | 70.00th=[ 132], 80.00th=[ 140], 90.00th=[ 153], 95.00th=[ 161], | 99.00th=[ 178], 99.50th=[ 180], 99.90th=[ 203], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 167, max= 312, per=25.20%, avg=247.22, stdev=35.87, samples=40 iops : min= 41, max= 78, avg=61.47, stdev= 8.91, samples=40 write: IOPS=63, BW=254KiB/s (260kB/s)(5180KiB/20416msec); 0 zone resets slat (usec): min=52, max=11644, avg=371.99, stdev=724.16 clat (msec): min=23, max=185, avg=123.15, stdev=20.35 lat (msec): min=23, max=185, avg=123.53, stdev=20.34 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 93], 10.00th=[ 97], 20.00th=[ 106], | 30.00th=[ 112], 40.00th=[ 117], 50.00th=[ 123], 60.00th=[ 128], | 70.00th=[ 133], 80.00th=[ 140], 90.00th=[ 150], 95.00th=[ 157], | 99.00th=[ 174], 99.50th=[ 178], 99.90th=[ 184], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 167, max= 312, per=24.71%, avg=252.32, stdev=35.88, samples=40 iops : min= 41, max= 78, avg=62.73, stdev= 9.01, samples=40 lat (msec) : 50=0.12%, 100=14.34%, 250=85.55% cpu : usr=0.32%, sys=2.86%, ctx=4889, 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=981KiB/s (1005kB/s), 244KiB/s-248KiB/s (250kB/s-254kB/s), io=19.6MiB (20.5MB), run=20345-20450msec WRITE: bw=1022KiB/s (1046kB/s), 254KiB/s-259KiB/s (260kB/s-265kB/s), io=20.4MiB (21.4MB), run=20345-20450msec 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=181147: Wed Aug 12 17:27:20 2026 read: IOPS=3, BW=122MiB/s (128MB/s)(40.0MiB/327msec) slat (nsec): min=19198k, max=19198k, avg=19198084.00, stdev= 0.00 clat (nsec): min=291990k, max=291990k, avg=291989602.00, stdev= 0.00 lat (nsec): min=311195k, max=311195k, avg=311194819.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=4.60%, ctx=4, majf=0, minf=8 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=122MiB/s (128MB/s), 122MiB/s-122MiB/s (128MB/s-128MB/s), io=40.0MiB (41.9MB), run=327-327msec 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