== sanity test 398c: run fio to test AIO ================= 13:39:45 (1786815585) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.677962 s, 61.9 MB/s osc.lustre-OST0000-osc-ffff8a38c4a40800.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=179838: Sat Aug 15 13:40:21 2026 write: IOPS=101, BW=405KiB/s (414kB/s)(10.0MiB/25312msec); 0 zone resets slat (usec): min=47, max=10739, avg=270.89, stdev=702.56 clat (msec): min=30, max=371, avg=157.29, stdev=51.99 lat (msec): min=30, max=371, avg=157.57, stdev=51.99 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 93], 10.00th=[ 101], 20.00th=[ 116], | 30.00th=[ 126], 40.00th=[ 136], 50.00th=[ 148], 60.00th=[ 159], | 70.00th=[ 171], 80.00th=[ 190], 90.00th=[ 232], 95.00th=[ 271], | 99.00th=[ 317], 99.50th=[ 342], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 372] bw ( KiB/s): min= 231, max= 589, per=24.96%, avg=403.14, stdev=93.65, samples=50 iops : min= 57, max= 147, avg=100.46, stdev=23.47, samples=50 lat (msec) : 50=0.08%, 100=9.38%, 250=82.81%, 500=7.73% cpu : usr=0.17%, sys=1.23%, ctx=2390, 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=179839: Sat Aug 15 13:40:21 2026 write: IOPS=101, BW=406KiB/s (415kB/s)(10.0MiB/25237msec); 0 zone resets slat (usec): min=46, max=19060, avg=295.30, stdev=886.37 clat (msec): min=27, max=381, avg=157.30, stdev=52.42 lat (msec): min=27, max=381, avg=157.60, stdev=52.42 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 94], 10.00th=[ 103], 20.00th=[ 116], | 30.00th=[ 129], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 157], | 70.00th=[ 169], 80.00th=[ 192], 90.00th=[ 226], 95.00th=[ 271], | 99.00th=[ 342], 99.50th=[ 359], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 247, max= 636, per=24.93%, avg=402.64, stdev=102.57, samples=50 iops : min= 61, max= 159, avg=100.36, stdev=25.73, samples=50 lat (msec) : 50=0.16%, 100=8.44%, 250=85.04%, 500=6.37% cpu : usr=0.16%, sys=1.19%, ctx=2242, 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=179840: Sat Aug 15 13:40:21 2026 write: IOPS=101, BW=404KiB/s (414kB/s)(10.0MiB/25317msec); 0 zone resets slat (usec): min=47, max=18720, avg=308.02, stdev=922.69 clat (msec): min=20, max=374, avg=157.49, stdev=50.61 lat (msec): min=20, max=374, avg=157.80, stdev=50.61 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 94], 10.00th=[ 104], 20.00th=[ 120], | 30.00th=[ 128], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 159], | 70.00th=[ 171], 80.00th=[ 192], 90.00th=[ 230], 95.00th=[ 264], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 223, max= 589, per=24.96%, avg=403.12, stdev=89.38, samples=50 iops : min= 55, max= 147, avg=100.46, stdev=22.41, samples=50 lat (msec) : 50=0.12%, 100=9.38%, 250=83.12%, 500=7.38% cpu : usr=0.19%, sys=1.38%, ctx=2474, 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=179841: Sat Aug 15 13:40:21 2026 write: IOPS=100, BW=404KiB/s (414kB/s)(10.0MiB/25353msec); 0 zone resets slat (usec): min=52, max=27753, avg=331.73, stdev=1216.99 clat (msec): min=22, max=377, avg=157.43, stdev=50.08 lat (msec): min=22, max=377, avg=157.77, stdev=50.15 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 94], 10.00th=[ 106], 20.00th=[ 117], | 30.00th=[ 128], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 159], | 70.00th=[ 174], 80.00th=[ 190], 90.00th=[ 230], 95.00th=[ 262], | 99.00th=[ 321], 99.50th=[ 342], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 376] bw ( KiB/s): min= 151, max= 590, per=24.92%, avg=402.52, stdev=87.39, samples=50 iops : min= 37, max= 147, avg=100.26, stdev=21.88, samples=50 lat (msec) : 50=0.12%, 100=7.23%, 250=85.78%, 500=6.88% cpu : usr=0.17%, sys=1.34%, ctx=3007, 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=1616KiB/s (1654kB/s), 404KiB/s-406KiB/s (414kB/s-415kB/s), io=40.0MiB (41.9MB), run=25237-25353msec 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=179855: Sat Aug 15 13:40:57 2026 read: IOPS=45, BW=183KiB/s (187kB/s)(5048KiB/27571msec) slat (usec): min=46, max=68495, avg=12250.05, stdev=6832.80 clat (msec): min=61, max=335, avg=163.83, stdev=37.72 lat (msec): min=85, max=340, avg=176.09, stdev=38.23 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 111], 10.00th=[ 121], 20.00th=[ 134], | 30.00th=[ 144], 40.00th=[ 153], 50.00th=[ 159], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 192], 90.00th=[ 211], 95.00th=[ 232], | 99.00th=[ 284], 99.50th=[ 321], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 79, max= 280, per=24.99%, avg=181.69, stdev=38.35, samples=54 iops : min= 19, max= 70, avg=44.91, stdev= 9.60, samples=54 write: IOPS=47, BW=188KiB/s (193kB/s)(5192KiB/27571msec); 0 zone resets slat (usec): min=49, max=13319, avg=308.62, stdev=777.19 clat (msec): min=53, max=288, avg=167.91, stdev=35.35 lat (msec): min=53, max=288, avg=168.22, stdev=35.36 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 120], 10.00th=[ 127], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 199], 90.00th=[ 215], 95.00th=[ 234], | 99.00th=[ 262], 99.50th=[ 275], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 102, max= 299, per=24.76%, avg=187.41, stdev=42.81, samples=54 iops : min= 25, max= 74, avg=46.33, stdev=10.73, samples=54 lat (msec) : 100=1.37%, 250=96.37%, 500=2.27% cpu : usr=0.23%, sys=1.96%, ctx=4465, 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=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=179856: Sat Aug 15 13:40:57 2026 read: IOPS=45, BW=181KiB/s (185kB/s)(4976KiB/27555msec) slat (usec): min=3047, max=63477, avg=12452.77, stdev=6941.07 clat (msec): min=27, max=282, avg=161.90, stdev=34.75 lat (msec): min=61, max=297, avg=174.36, stdev=35.86 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 109], 10.00th=[ 121], 20.00th=[ 134], | 30.00th=[ 142], 40.00th=[ 150], 50.00th=[ 159], 60.00th=[ 167], | 70.00th=[ 178], 80.00th=[ 190], 90.00th=[ 209], 95.00th=[ 224], | 99.00th=[ 264], 99.50th=[ 271], 99.90th=[ 275], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 39, max= 247, per=24.69%, avg=179.48, stdev=37.21, samples=54 iops : min= 9, max= 61, avg=44.35, stdev= 9.40, samples=54 write: IOPS=47, BW=191KiB/s (196kB/s)(5264KiB/27555msec); 0 zone resets slat (usec): min=53, max=13626, avg=288.93, stdev=651.18 clat (msec): min=88, max=281, avg=167.29, stdev=33.86 lat (msec): min=89, max=281, avg=167.58, stdev=33.86 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 118], 10.00th=[ 128], 20.00th=[ 138], | 30.00th=[ 148], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 194], 90.00th=[ 213], 95.00th=[ 230], | 99.00th=[ 257], 99.50th=[ 259], 99.90th=[ 279], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 95, max= 287, per=25.18%, avg=190.61, stdev=39.77, samples=54 iops : min= 23, max= 71, avg=47.13, stdev= 9.93, samples=54 lat (msec) : 50=0.04%, 100=1.41%, 250=96.99%, 500=1.56% cpu : usr=0.27%, sys=1.96%, ctx=4258, 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=179857: Sat Aug 15 13:40:57 2026 read: IOPS=45, BW=181KiB/s (185kB/s)(4984KiB/27575msec) slat (usec): min=2915, max=53615, avg=12567.55, stdev=7045.52 clat (msec): min=23, max=326, avg=162.00, stdev=37.39 lat (msec): min=28, max=338, avg=174.58, stdev=38.60 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 109], 10.00th=[ 117], 20.00th=[ 131], | 30.00th=[ 142], 40.00th=[ 150], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 192], 90.00th=[ 213], 95.00th=[ 228], | 99.00th=[ 259], 99.50th=[ 284], 99.90th=[ 300], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 55, max= 270, per=24.72%, avg=179.74, stdev=39.11, samples=54 iops : min= 13, max= 67, avg=44.41, stdev= 9.82, samples=54 write: IOPS=47, BW=191KiB/s (195kB/s)(5256KiB/27575msec); 0 zone resets slat (usec): min=53, max=14380, avg=317.64, stdev=810.55 clat (msec): min=52, max=302, avg=167.29, stdev=33.13 lat (msec): min=52, max=304, avg=167.62, stdev=33.10 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 121], 10.00th=[ 129], 20.00th=[ 140], | 30.00th=[ 148], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 184], 80.00th=[ 197], 90.00th=[ 211], 95.00th=[ 226], | 99.00th=[ 257], 99.50th=[ 266], 99.90th=[ 279], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 78, max= 256, per=24.93%, avg=188.72, stdev=40.42, samples=54 iops : min= 19, max= 64, avg=46.69, stdev=10.12, samples=54 lat (msec) : 50=0.04%, 100=1.52%, 250=96.45%, 500=1.99% cpu : usr=0.30%, sys=2.14%, ctx=4620, 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=179858: Sat Aug 15 13:40:57 2026 read: IOPS=46, BW=184KiB/s (189kB/s)(5060KiB/27481msec) slat (usec): min=2752, max=59216, avg=12196.65, stdev=6875.19 clat (msec): min=36, max=323, avg=160.00, stdev=36.18 lat (msec): min=64, max=352, avg=172.21, stdev=37.44 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 108], 10.00th=[ 117], 20.00th=[ 131], | 30.00th=[ 140], 40.00th=[ 148], 50.00th=[ 157], 60.00th=[ 165], | 70.00th=[ 176], 80.00th=[ 188], 90.00th=[ 207], 95.00th=[ 228], | 99.00th=[ 255], 99.50th=[ 268], 99.90th=[ 321], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 55, max= 288, per=25.22%, avg=183.37, stdev=42.18, samples=54 iops : min= 13, max= 72, avg=45.33, stdev=10.58, samples=54 write: IOPS=47, BW=188KiB/s (193kB/s)(5180KiB/27481msec); 0 zone resets slat (usec): min=54, max=7678, avg=286.26, stdev=536.81 clat (msec): min=52, max=318, avg=168.79, stdev=36.74 lat (msec): min=52, max=318, avg=169.08, stdev=36.76 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 116], 10.00th=[ 126], 20.00th=[ 138], | 30.00th=[ 148], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 186], 80.00th=[ 197], 90.00th=[ 222], 95.00th=[ 236], | 99.00th=[ 271], 99.50th=[ 284], 99.90th=[ 292], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 87, max= 263, per=24.72%, avg=187.17, stdev=34.57, samples=54 iops : min= 21, max= 65, avg=46.28, stdev= 8.69, samples=54 lat (msec) : 50=0.04%, 100=2.07%, 250=95.98%, 500=1.91% cpu : usr=0.25%, sys=2.11%, ctx=4307, 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=728KiB/s (745kB/s), 181KiB/s-184KiB/s (185kB/s-189kB/s), io=19.6MiB (20.5MB), run=27481-27575msec WRITE: bw=758KiB/s (776kB/s), 188KiB/s-191KiB/s (193kB/s-196kB/s), io=20.4MiB (21.4MB), run=27481-27575msec 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=179866: Sat Aug 15 13:41:07 2026 read: IOPS=1, BW=73.5MiB/s (77.1MB/s)(40.0MiB/544msec) slat (nsec): min=39684k, max=39684k, avg=39684431.00, stdev= 0.00 clat (nsec): min=466030k, max=466030k, avg=466030410.00, stdev= 0.00 lat (nsec): min=505719k, max=505719k, avg=505718831.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=1.66%, ctx=12, 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=73.5MiB/s (77.1MB/s), 73.5MiB/s-73.5MiB/s (77.1MB/s-77.1MB/s), io=40.0MiB (41.9MB), run=544-544msec 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