== sanity test 398c: run fio to test AIO ================= 05:26:11 (1787390771) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.541373 s, 77.5 MB/s osc.lustre-OST0000-osc-ffff892632116000.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=180262: Sat Aug 22 05:26:50 2026 write: IOPS=88, BW=354KiB/s (362kB/s)(10.0MiB/28929msec); 0 zone resets slat (usec): min=50, max=22132, avg=324.53, stdev=1049.95 clat (msec): min=37, max=352, avg=179.54, stdev=35.10 lat (msec): min=37, max=353, avg=179.87, stdev=35.11 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 132], 10.00th=[ 142], 20.00th=[ 153], | 30.00th=[ 159], 40.00th=[ 169], 50.00th=[ 176], 60.00th=[ 184], | 70.00th=[ 192], 80.00th=[ 205], 90.00th=[ 224], 95.00th=[ 236], | 99.00th=[ 296], 99.50th=[ 334], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 240, max= 510, per=24.96%, avg=352.93, stdev=67.47, samples=57 iops : min= 60, max= 127, avg=87.96, stdev=16.86, samples=57 lat (msec) : 50=0.04%, 100=0.04%, 250=96.29%, 500=3.63% cpu : usr=0.15%, sys=1.17%, ctx=2555, majf=0, minf=9 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=180263: Sat Aug 22 05:26:50 2026 write: IOPS=88, BW=354KiB/s (362kB/s)(10.0MiB/28953msec); 0 zone resets slat (usec): min=53, max=11877, avg=304.07, stdev=748.30 clat (msec): min=50, max=332, avg=179.43, stdev=34.27 lat (msec): min=51, max=332, avg=179.73, stdev=34.25 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 132], 10.00th=[ 140], 20.00th=[ 153], | 30.00th=[ 161], 40.00th=[ 169], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 194], 80.00th=[ 205], 90.00th=[ 222], 95.00th=[ 239], | 99.00th=[ 292], 99.50th=[ 296], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 120, max= 464, per=24.88%, avg=351.86, stdev=64.72, samples=57 iops : min= 30, max= 116, avg=87.65, stdev=16.17, samples=57 lat (msec) : 100=0.27%, 250=96.60%, 500=3.12% cpu : usr=0.21%, sys=1.28%, ctx=2530, majf=0, minf=9 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=180264: Sat Aug 22 05:26:50 2026 write: IOPS=88, BW=355KiB/s (364kB/s)(10.0MiB/28840msec); 0 zone resets slat (usec): min=51, max=9415, avg=314.62, stdev=715.89 clat (msec): min=12, max=334, avg=179.69, stdev=35.53 lat (msec): min=13, max=334, avg=180.01, stdev=35.53 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 132], 10.00th=[ 140], 20.00th=[ 150], | 30.00th=[ 161], 40.00th=[ 169], 50.00th=[ 178], 60.00th=[ 184], | 70.00th=[ 194], 80.00th=[ 207], 90.00th=[ 222], 95.00th=[ 243], | 99.00th=[ 292], 99.50th=[ 313], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 231, max= 488, per=25.09%, avg=354.82, stdev=59.87, samples=57 iops : min= 57, max= 122, avg=88.37, stdev=14.98, samples=57 lat (msec) : 20=0.04%, 50=0.08%, 100=0.16%, 250=96.17%, 500=3.55% cpu : usr=0.15%, sys=1.11%, ctx=2776, 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=180265: Sat Aug 22 05:26:50 2026 write: IOPS=88, BW=354KiB/s (362kB/s)(10.0MiB/28947msec); 0 zone resets slat (usec): min=53, max=10799, avg=305.34, stdev=746.49 clat (msec): min=18, max=354, avg=179.61, stdev=35.33 lat (msec): min=18, max=358, avg=179.92, stdev=35.33 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 131], 10.00th=[ 142], 20.00th=[ 153], | 30.00th=[ 161], 40.00th=[ 169], 50.00th=[ 176], 60.00th=[ 184], | 70.00th=[ 192], 80.00th=[ 205], 90.00th=[ 220], 95.00th=[ 241], | 99.00th=[ 305], 99.50th=[ 326], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 203, max= 510, per=24.90%, avg=352.11, stdev=65.81, samples=57 iops : min= 50, max= 127, avg=87.72, stdev=16.45, samples=57 lat (msec) : 20=0.04%, 50=0.04%, 100=0.16%, 250=96.41%, 500=3.36% cpu : usr=0.16%, sys=1.23%, ctx=2860, 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 Run status group 0 (all jobs): WRITE: bw=1415KiB/s (1449kB/s), 354KiB/s-355KiB/s (362kB/s-364kB/s), io=40.0MiB (41.9MB), run=28840-28953msec 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=180280: Sat Aug 22 05:27:26 2026 read: IOPS=45, BW=181KiB/s (185kB/s)(5048KiB/27966msec) slat (usec): min=63, max=61530, avg=12105.59, stdev=6618.33 clat (msec): min=17, max=317, avg=166.67, stdev=39.95 lat (msec): min=19, max=331, avg=178.78, stdev=41.62 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 114], 10.00th=[ 122], 20.00th=[ 134], | 30.00th=[ 144], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 197], 90.00th=[ 222], 95.00th=[ 239], | 99.00th=[ 275], 99.50th=[ 288], 99.90th=[ 313], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 103, max= 264, per=25.26%, avg=179.82, stdev=39.18, samples=55 iops : min= 25, max= 66, avg=44.51, stdev= 9.80, samples=55 write: IOPS=46, BW=186KiB/s (190kB/s)(5192KiB/27966msec); 0 zone resets slat (usec): min=57, max=11294, avg=334.05, stdev=796.55 clat (msec): min=52, max=297, avg=170.02, stdev=35.80 lat (msec): min=52, max=297, avg=170.35, stdev=35.81 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 118], 10.00th=[ 128], 20.00th=[ 140], | 30.00th=[ 150], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 201], 90.00th=[ 220], 95.00th=[ 234], | 99.00th=[ 266], 99.50th=[ 275], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 111, max= 255, per=25.01%, avg=185.35, stdev=33.75, samples=55 iops : min= 27, max= 63, avg=45.89, stdev= 8.44, samples=55 lat (msec) : 20=0.04%, 50=0.16%, 100=1.37%, 250=95.78%, 500=2.66% cpu : usr=0.30%, sys=2.28%, ctx=4659, 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=180281: Sat Aug 22 05:27:26 2026 read: IOPS=44, BW=177KiB/s (181kB/s)(4976KiB/28170msec) slat (usec): min=3142, max=53026, avg=12233.44, stdev=6588.13 clat (msec): min=45, max=347, avg=166.50, stdev=37.73 lat (msec): min=57, max=360, avg=178.74, stdev=39.15 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 116], 10.00th=[ 124], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 215], 95.00th=[ 239], | 99.00th=[ 284], 99.50th=[ 296], 99.90th=[ 317], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 103, max= 247, per=24.70%, avg=175.89, stdev=35.39, samples=55 iops : min= 25, max= 61, avg=43.53, stdev= 8.81, samples=55 write: IOPS=46, BW=187KiB/s (191kB/s)(5264KiB/28170msec); 0 zone resets slat (usec): min=55, max=22020, avg=362.76, stdev=981.30 clat (msec): min=30, max=327, avg=171.34, stdev=38.15 lat (msec): min=30, max=327, avg=171.70, stdev=38.17 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 118], 10.00th=[ 127], 20.00th=[ 138], | 30.00th=[ 150], 40.00th=[ 157], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 188], 80.00th=[ 203], 90.00th=[ 226], 95.00th=[ 241], | 99.00th=[ 271], 99.50th=[ 296], 99.90th=[ 326], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 103, max= 288, per=25.10%, avg=186.02, stdev=38.93, samples=55 iops : min= 25, max= 72, avg=46.07, stdev= 9.80, samples=55 lat (msec) : 50=0.08%, 100=0.78%, 250=95.98%, 500=3.16% cpu : usr=0.27%, sys=2.26%, ctx=4636, 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=180282: Sat Aug 22 05:27:26 2026 read: IOPS=44, BW=177KiB/s (181kB/s)(4984KiB/28158msec) slat (usec): min=2920, max=46532, avg=12325.69, stdev=6414.69 clat (msec): min=34, max=376, avg=165.96, stdev=38.31 lat (msec): min=48, max=399, avg=178.30, stdev=40.03 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 113], 10.00th=[ 122], 20.00th=[ 136], | 30.00th=[ 144], 40.00th=[ 155], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 182], 80.00th=[ 197], 90.00th=[ 218], 95.00th=[ 232], | 99.00th=[ 284], 99.50th=[ 292], 99.90th=[ 309], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 104, max= 263, per=24.89%, avg=177.24, stdev=39.41, samples=55 iops : min= 26, max= 65, avg=43.85, stdev= 9.89, samples=55 write: IOPS=46, BW=187KiB/s (191kB/s)(5256KiB/28158msec); 0 zone resets slat (usec): min=57, max=11485, avg=338.19, stdev=861.50 clat (msec): min=18, max=319, avg=171.55, stdev=36.28 lat (msec): min=18, max=320, avg=171.90, stdev=36.29 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 120], 10.00th=[ 130], 20.00th=[ 142], | 30.00th=[ 150], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 178], | 70.00th=[ 188], 80.00th=[ 201], 90.00th=[ 220], 95.00th=[ 234], | 99.00th=[ 288], 99.50th=[ 292], 99.90th=[ 317], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 95, max= 280, per=25.07%, avg=185.76, stdev=39.51, samples=55 iops : min= 23, max= 70, avg=46.00, stdev= 9.89, samples=55 lat (msec) : 20=0.04%, 50=0.08%, 100=1.02%, 250=96.21%, 500=2.66% cpu : usr=0.33%, sys=2.19%, ctx=4758, 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=180283: Sat Aug 22 05:27:26 2026 read: IOPS=44, BW=180KiB/s (184kB/s)(5060KiB/28161msec) slat (usec): min=2558, max=52853, avg=12257.93, stdev=6461.94 clat (msec): min=22, max=310, avg=165.32, stdev=36.69 lat (msec): min=38, max=319, avg=177.59, stdev=37.98 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 114], 10.00th=[ 124], 20.00th=[ 136], | 30.00th=[ 144], 40.00th=[ 153], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 215], 95.00th=[ 236], | 99.00th=[ 264], 99.50th=[ 284], 99.90th=[ 305], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 63, max= 272, per=25.22%, avg=179.56, stdev=35.06, samples=55 iops : min= 15, max= 68, avg=44.45, stdev= 8.80, samples=55 write: IOPS=45, BW=184KiB/s (188kB/s)(5180KiB/28161msec); 0 zone resets slat (usec): min=55, max=19780, avg=327.79, stdev=824.91 clat (msec): min=85, max=344, avg=172.53, stdev=37.57 lat (msec): min=85, max=345, avg=172.86, stdev=37.64 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 121], 10.00th=[ 129], 20.00th=[ 142], | 30.00th=[ 150], 40.00th=[ 159], 50.00th=[ 167], 60.00th=[ 176], | 70.00th=[ 188], 80.00th=[ 203], 90.00th=[ 226], 95.00th=[ 241], | 99.00th=[ 279], 99.50th=[ 317], 99.90th=[ 326], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 127, max= 263, per=24.76%, avg=183.45, stdev=35.89, samples=55 iops : min= 31, max= 65, avg=45.42, stdev= 8.96, samples=55 lat (msec) : 50=0.04%, 100=1.09%, 250=96.17%, 500=2.70% cpu : usr=0.25%, sys=2.25%, ctx=4730, 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=712KiB/s (729kB/s), 177KiB/s-181KiB/s (181kB/s-185kB/s), io=19.6MiB (20.5MB), run=27966-28170msec WRITE: bw=742KiB/s (759kB/s), 184KiB/s-187KiB/s (188kB/s-191kB/s), io=20.4MiB (21.4MB), run=27966-28170msec 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=180291: Sat Aug 22 05:27:36 2026 read: IOPS=2, BW=82.6MiB/s (86.7MB/s)(40.0MiB/484msec) slat (nsec): min=54247k, max=54247k, avg=54247264.00, stdev= 0.00 clat (nsec): min=402044k, max=402044k, avg=402043899.00, stdev= 0.00 lat (nsec): min=456296k, max=456296k, avg=456296029.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=0.83%, ctx=4, majf=0, minf=7 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=82.6MiB/s (86.7MB/s), 82.6MiB/s-82.6MiB/s (86.7MB/s-86.7MB/s), io=40.0MiB (41.9MB), run=484-484msec 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