== sanity test 398c: run fio to test AIO ================= 09:27:10 (1787837230) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.462983 s, 90.6 MB/s osc.lustre-OST0000-osc-ffff9049d16fc800.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=181189: Thu Aug 27 09:27:48 2026 write: IOPS=87, BW=351KiB/s (359kB/s)(10.0MiB/29206msec); 0 zone resets slat (usec): min=28, max=13489, avg=233.48, stdev=746.47 clat (msec): min=41, max=344, avg=181.86, stdev=40.81 lat (msec): min=41, max=344, avg=182.10, stdev=40.79 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 123], 10.00th=[ 133], 20.00th=[ 148], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 213], 90.00th=[ 247], 95.00th=[ 259], | 99.00th=[ 284], 99.50th=[ 292], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 224, max= 520, per=24.96%, avg=349.14, stdev=69.86, samples=57 iops : min= 56, max= 130, avg=86.84, stdev=17.54, samples=57 lat (msec) : 50=0.04%, 100=0.31%, 250=91.25%, 500=8.40% cpu : usr=0.16%, sys=0.86%, ctx=2118, 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=181190: Thu Aug 27 09:27:48 2026 write: IOPS=87, BW=350KiB/s (358kB/s)(10.0MiB/29264msec); 0 zone resets slat (usec): min=29, max=18569, avg=219.03, stdev=731.41 clat (msec): min=93, max=353, avg=181.80, stdev=41.01 lat (msec): min=93, max=353, avg=182.02, stdev=41.01 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 127], 10.00th=[ 134], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 213], 90.00th=[ 236], 95.00th=[ 255], | 99.00th=[ 288], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 127, max= 512, per=24.94%, avg=348.86, stdev=79.91, samples=58 iops : min= 31, max= 128, avg=86.78, stdev=20.06, samples=58 lat (msec) : 100=0.20%, 250=92.81%, 500=6.99% cpu : usr=0.18%, sys=0.92%, ctx=2240, 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=181191: Thu Aug 27 09:27:48 2026 write: IOPS=87, BW=352KiB/s (360kB/s)(10.0MiB/29113msec); 0 zone resets slat (usec): min=28, max=17164, avg=249.12, stdev=708.43 clat (msec): min=21, max=359, avg=181.49, stdev=42.41 lat (msec): min=21, max=359, avg=181.74, stdev=42.38 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 123], 10.00th=[ 133], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 190], | 70.00th=[ 199], 80.00th=[ 213], 90.00th=[ 241], 95.00th=[ 257], | 99.00th=[ 292], 99.50th=[ 313], 99.90th=[ 355], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 239, max= 510, per=25.15%, avg=351.82, stdev=66.39, samples=57 iops : min= 59, max= 127, avg=87.53, stdev=16.66, samples=57 lat (msec) : 50=0.31%, 100=0.82%, 250=91.72%, 500=7.15% cpu : usr=0.18%, sys=1.11%, ctx=2770, 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=181192: Thu Aug 27 09:27:48 2026 write: IOPS=87, BW=350KiB/s (358kB/s)(10.0MiB/29252msec); 0 zone resets slat (usec): min=30, max=14095, avg=255.90, stdev=807.21 clat (msec): min=41, max=350, avg=181.73, stdev=41.80 lat (msec): min=41, max=350, avg=181.99, stdev=41.74 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 124], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 190], | 70.00th=[ 201], 80.00th=[ 218], 90.00th=[ 241], 95.00th=[ 259], | 99.00th=[ 300], 99.50th=[ 330], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 199, max= 509, per=24.93%, avg=348.83, stdev=72.71, samples=58 iops : min= 49, max= 127, avg=86.78, stdev=18.26, samples=58 lat (msec) : 50=0.04%, 100=0.23%, 250=91.99%, 500=7.73% cpu : usr=0.27%, sys=1.04%, ctx=2336, 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=1400KiB/s (1433kB/s), 350KiB/s-352KiB/s (358kB/s-360kB/s), io=40.0MiB (41.9MB), run=29113-29264msec 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=181206: Thu Aug 27 09:28:22 2026 read: IOPS=45, BW=184KiB/s (188kB/s)(5048KiB/27473msec) slat (usec): min=2727, max=46815, avg=11896.40, stdev=6274.66 clat (msec): min=22, max=316, avg=163.18, stdev=39.67 lat (msec): min=28, max=329, avg=175.09, stdev=41.20 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 106], 10.00th=[ 116], 20.00th=[ 129], | 30.00th=[ 140], 40.00th=[ 150], 50.00th=[ 161], 60.00th=[ 169], | 70.00th=[ 184], 80.00th=[ 199], 90.00th=[ 218], 95.00th=[ 234], | 99.00th=[ 257], 99.50th=[ 271], 99.90th=[ 305], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 111, max= 239, per=25.17%, avg=183.20, stdev=30.47, samples=54 iops : min= 27, max= 59, avg=45.37, stdev= 7.65, samples=54 write: IOPS=47, BW=189KiB/s (194kB/s)(5192KiB/27473msec); 0 zone resets slat (usec): min=31, max=16767, avg=298.16, stdev=1009.11 clat (msec): min=81, max=300, avg=166.26, stdev=37.95 lat (msec): min=81, max=301, avg=166.56, stdev=37.94 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 113], 10.00th=[ 121], 20.00th=[ 134], | 30.00th=[ 144], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 184], 80.00th=[ 197], 90.00th=[ 220], 95.00th=[ 243], | 99.00th=[ 271], 99.50th=[ 279], 99.90th=[ 292], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 95, max= 295, per=24.90%, avg=188.72, stdev=46.34, samples=54 iops : min= 23, max= 73, avg=46.74, stdev=11.55, samples=54 lat (msec) : 50=0.08%, 100=2.15%, 250=95.55%, 500=2.23% cpu : usr=0.28%, sys=2.07%, ctx=4664, 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=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=181207: Thu Aug 27 09:28:22 2026 read: IOPS=45, BW=181KiB/s (185kB/s)(4976KiB/27558msec) slat (usec): min=3110, max=48989, avg=11834.91, stdev=6277.18 clat (msec): min=17, max=323, avg=162.67, stdev=43.10 lat (msec): min=32, max=337, avg=174.51, stdev=44.52 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 106], 10.00th=[ 114], 20.00th=[ 127], | 30.00th=[ 138], 40.00th=[ 148], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 197], 90.00th=[ 220], 95.00th=[ 243], | 99.00th=[ 292], 99.50th=[ 313], 99.90th=[ 317], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 103, max= 279, per=24.60%, avg=179.11, stdev=38.58, samples=54 iops : min= 25, max= 69, avg=44.33, stdev= 9.62, samples=54 write: IOPS=47, BW=191KiB/s (196kB/s)(5264KiB/27558msec); 0 zone resets slat (usec): min=33, max=15307, avg=320.00, stdev=948.48 clat (msec): min=67, max=318, avg=168.00, stdev=37.34 lat (msec): min=67, max=318, avg=168.32, stdev=37.34 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 112], 10.00th=[ 125], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 186], 80.00th=[ 201], 90.00th=[ 218], 95.00th=[ 232], | 99.00th=[ 271], 99.50th=[ 284], 99.90th=[ 292], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 101, max= 256, per=25.13%, avg=190.48, stdev=37.29, samples=54 iops : min= 25, max= 64, avg=47.19, stdev= 9.33, samples=54 lat (msec) : 20=0.04%, 50=0.04%, 100=2.30%, 250=94.45%, 500=3.16% cpu : usr=0.33%, sys=2.18%, ctx=4765, 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=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=181208: Thu Aug 27 09:28:22 2026 read: IOPS=45, BW=181KiB/s (185kB/s)(4984KiB/27557msec) slat (usec): min=3039, max=47087, avg=11876.81, stdev=6096.17 clat (msec): min=34, max=324, avg=162.12, stdev=40.15 lat (msec): min=49, max=336, avg=174.00, stdev=41.67 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 106], 10.00th=[ 115], 20.00th=[ 128], | 30.00th=[ 138], 40.00th=[ 148], 50.00th=[ 159], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 192], 90.00th=[ 220], 95.00th=[ 236], | 99.00th=[ 275], 99.50th=[ 292], 99.90th=[ 305], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 118, max= 272, per=24.82%, avg=180.67, stdev=39.10, samples=54 iops : min= 29, max= 68, avg=44.70, stdev= 9.74, samples=54 write: IOPS=47, BW=191KiB/s (195kB/s)(5256KiB/27557msec); 0 zone resets slat (usec): min=37, max=7670, avg=265.31, stdev=637.00 clat (msec): min=88, max=297, avg=168.32, stdev=37.80 lat (msec): min=88, max=297, avg=168.58, stdev=37.79 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 113], 10.00th=[ 124], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 188], 80.00th=[ 201], 90.00th=[ 222], 95.00th=[ 236], | 99.00th=[ 268], 99.50th=[ 275], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 104, max= 262, per=25.02%, avg=189.69, stdev=42.53, samples=54 iops : min= 26, max= 65, avg=46.98, stdev=10.61, samples=54 lat (msec) : 50=0.04%, 100=1.91%, 250=95.62%, 500=2.42% cpu : usr=0.34%, sys=2.02%, ctx=4742, 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=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=181209: Thu Aug 27 09:28:22 2026 read: IOPS=45, BW=184KiB/s (188kB/s)(5060KiB/27557msec) slat (usec): min=58, max=43118, avg=12007.49, stdev=6218.38 clat (msec): min=15, max=299, avg=163.96, stdev=42.24 lat (msec): min=16, max=317, avg=175.97, stdev=43.65 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 106], 10.00th=[ 115], 20.00th=[ 129], | 30.00th=[ 140], 40.00th=[ 150], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 184], 80.00th=[ 199], 90.00th=[ 224], 95.00th=[ 239], | 99.00th=[ 275], 99.50th=[ 288], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 109, max= 288, per=25.20%, avg=183.46, stdev=35.13, samples=54 iops : min= 27, max= 72, avg=45.43, stdev= 8.79, samples=54 write: IOPS=46, BW=188KiB/s (192kB/s)(5180KiB/27557msec); 0 zone resets slat (usec): min=34, max=11263, avg=317.17, stdev=840.84 clat (msec): min=32, max=297, avg=167.63, stdev=38.96 lat (msec): min=32, max=298, avg=167.95, stdev=38.95 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 109], 10.00th=[ 123], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 201], 90.00th=[ 220], 95.00th=[ 241], | 99.00th=[ 275], 99.50th=[ 279], 99.90th=[ 292], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 95, max= 292, per=24.69%, avg=187.17, stdev=44.21, samples=54 iops : min= 23, max= 73, avg=46.35, stdev=11.08, samples=54 lat (msec) : 20=0.16%, 50=0.16%, 100=2.15%, 250=94.14%, 500=3.40% cpu : usr=0.26%, sys=2.09%, ctx=4813, 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=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 (746kB/s), 181KiB/s-184KiB/s (185kB/s-188kB/s), io=19.6MiB (20.5MB), run=27473-27558msec WRITE: bw=758KiB/s (776kB/s), 188KiB/s-191KiB/s (192kB/s-196kB/s), io=20.4MiB (21.4MB), run=27473-27558msec 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=181217: Thu Aug 27 09:28:31 2026 read: IOPS=2, BW=80.0MiB/s (84.9MB/s)(40.0MiB/494msec) slat (nsec): min=60938k, max=60938k, avg=60937652.00, stdev= 0.00 clat (nsec): min=398091k, max=398091k, avg=398090918.00, stdev= 0.00 lat (nsec): min=459034k, max=459034k, avg=459033742.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] lat (msec) : 500=100.00% cpu : usr=0.41%, sys=4.26%, ctx=8, 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=80.0MiB/s (84.9MB/s), 80.0MiB/s-80.0MiB/s (84.9MB/s-84.9MB/s), io=40.0MiB (41.9MB), run=494-494msec 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