== sanity test 398c: run fio to test AIO ================= 07:01:19 (1778929279) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.225248 s, 186 MB/s osc.lustre-OST0000-osc-ffff9a75435e1000.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=148226: Sat May 16 07:02:39 2026 write: IOPS=34, BW=136KiB/s (139kB/s)(10.0MiB/75194msec); 0 zone resets slat (usec): min=36, max=7218, avg=264.27, stdev=335.55 clat (msec): min=76, max=859, avg=469.20, stdev=118.57 lat (msec): min=77, max=859, avg=469.46, stdev=118.60 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 279], 10.00th=[ 326], 20.00th=[ 376], | 30.00th=[ 414], 40.00th=[ 447], 50.00th=[ 472], 60.00th=[ 498], | 70.00th=[ 531], 80.00th=[ 558], 90.00th=[ 617], 95.00th=[ 667], | 99.00th=[ 743], 99.50th=[ 768], 99.90th=[ 852], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 16, max= 312, per=24.93%, avg=135.64, stdev=39.80, samples=149 iops : min= 4, max= 78, avg=33.54, stdev=10.01, samples=149 lat (msec) : 100=0.62%, 250=3.36%, 500=56.68%, 750=38.67%, 1000=0.66% cpu : usr=0.08%, sys=0.58%, ctx=2927, 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=148227: Sat May 16 07:02:39 2026 write: IOPS=34, BW=136KiB/s (139kB/s)(10.0MiB/75195msec); 0 zone resets slat (usec): min=40, max=3968, avg=257.56, stdev=304.91 clat (msec): min=118, max=858, avg=469.47, stdev=118.88 lat (msec): min=118, max=858, avg=469.73, stdev=118.90 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 275], 10.00th=[ 321], 20.00th=[ 372], | 30.00th=[ 418], 40.00th=[ 447], 50.00th=[ 477], 60.00th=[ 498], | 70.00th=[ 531], 80.00th=[ 567], 90.00th=[ 617], 95.00th=[ 659], | 99.00th=[ 743], 99.50th=[ 785], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 63, max= 384, per=24.93%, avg=135.64, stdev=38.71, samples=149 iops : min= 15, max= 96, avg=33.54, stdev= 9.77, samples=149 lat (msec) : 250=3.91%, 500=56.72%, 750=38.59%, 1000=0.78% cpu : usr=0.06%, sys=0.59%, ctx=2737, 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=148228: Sat May 16 07:02:39 2026 write: IOPS=34, BW=136KiB/s (139kB/s)(10.0MiB/75226msec); 0 zone resets slat (usec): min=40, max=8766, avg=274.66, stdev=398.79 clat (msec): min=102, max=857, avg=469.37, stdev=118.12 lat (msec): min=102, max=857, avg=469.65, stdev=118.15 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 275], 10.00th=[ 326], 20.00th=[ 376], | 30.00th=[ 414], 40.00th=[ 447], 50.00th=[ 472], 60.00th=[ 493], | 70.00th=[ 527], 80.00th=[ 567], 90.00th=[ 625], 95.00th=[ 667], | 99.00th=[ 743], 99.50th=[ 768], 99.90th=[ 802], 99.95th=[ 818], | 99.99th=[ 860] bw ( KiB/s): min= 31, max= 312, per=24.93%, avg=135.64, stdev=39.21, samples=149 iops : min= 7, max= 78, avg=33.54, stdev= 9.90, samples=149 lat (msec) : 250=4.06%, 500=57.54%, 750=37.66%, 1000=0.74% cpu : usr=0.09%, sys=0.58%, ctx=3069, 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=148229: Sat May 16 07:02:39 2026 write: IOPS=34, BW=136KiB/s (139kB/s)(10.0MiB/75226msec); 0 zone resets slat (usec): min=40, max=6286, avg=268.58, stdev=322.67 clat (msec): min=41, max=818, avg=469.41, stdev=114.92 lat (msec): min=42, max=818, avg=469.68, stdev=114.93 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 279], 10.00th=[ 326], 20.00th=[ 376], | 30.00th=[ 418], 40.00th=[ 447], 50.00th=[ 472], 60.00th=[ 498], | 70.00th=[ 527], 80.00th=[ 567], 90.00th=[ 617], 95.00th=[ 659], | 99.00th=[ 726], 99.50th=[ 743], 99.90th=[ 785], 99.95th=[ 793], | 99.99th=[ 818] bw ( KiB/s): min= 63, max= 319, per=24.90%, avg=135.47, stdev=35.57, samples=149 iops : min= 15, max= 79, avg=33.49, stdev= 8.95, samples=149 lat (msec) : 50=0.04%, 250=3.63%, 500=57.15%, 750=38.75%, 1000=0.43% cpu : usr=0.08%, sys=0.59%, ctx=2990, 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=544KiB/s (558kB/s), 136KiB/s-136KiB/s (139kB/s-139kB/s), io=40.0MiB (41.9MB), run=75194-75226msec 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=148249: Sat May 16 07:03:18 2026 read: IOPS=35, BW=141KiB/s (144kB/s)(5048KiB/35843msec) slat (usec): min=1626, max=13455, avg=4545.59, stdev=1775.80 clat (msec): min=6, max=270, avg=140.74, stdev=34.83 lat (msec): min=9, max=276, avg=145.29, stdev=35.39 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 89], 10.00th=[ 100], 20.00th=[ 111], | 30.00th=[ 123], 40.00th=[ 132], 50.00th=[ 140], 60.00th=[ 150], | 70.00th=[ 159], 80.00th=[ 169], 90.00th=[ 186], 95.00th=[ 199], | 99.00th=[ 230], 99.50th=[ 243], 99.90th=[ 268], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 55, max= 272, per=25.04%, avg=140.00, stdev=46.37, samples=71 iops : min= 13, max= 68, avg=34.75, stdev=11.62, samples=71 write: IOPS=36, BW=145KiB/s (148kB/s)(5192KiB/35843msec); 0 zone resets slat (usec): min=53, max=4097, avg=257.29, stdev=215.65 clat (msec): min=70, max=573, avg=299.60, stdev=86.18 lat (msec): min=70, max=573, avg=299.85, stdev=86.20 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 169], 10.00th=[ 199], 20.00th=[ 226], | 30.00th=[ 251], 40.00th=[ 271], 50.00th=[ 292], 60.00th=[ 313], | 70.00th=[ 334], 80.00th=[ 372], 90.00th=[ 426], 95.00th=[ 460], | 99.00th=[ 510], 99.50th=[ 531], 99.90th=[ 550], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 80, max= 254, per=24.68%, avg=143.63, stdev=33.74, samples=71 iops : min= 20, max= 63, avg=35.66, stdev= 8.48, samples=71 lat (msec) : 10=0.12%, 50=0.23%, 100=5.20%, 250=58.87%, 500=34.84% lat (msec) : 750=0.74% cpu : usr=0.16%, sys=1.76%, ctx=5067, 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=148250: Sat May 16 07:03:18 2026 read: IOPS=34, BW=139KiB/s (142kB/s)(4976KiB/35826msec) slat (usec): min=58, max=13467, avg=4560.39, stdev=1851.49 clat (msec): min=6, max=277, avg=142.67, stdev=35.96 lat (msec): min=11, max=282, avg=147.24, stdev=36.41 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 91], 10.00th=[ 102], 20.00th=[ 113], | 30.00th=[ 123], 40.00th=[ 131], 50.00th=[ 140], 60.00th=[ 150], | 70.00th=[ 161], 80.00th=[ 174], 90.00th=[ 190], 95.00th=[ 209], | 99.00th=[ 230], 99.50th=[ 234], 99.90th=[ 264], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 64, max= 232, per=24.71%, avg=138.13, stdev=41.35, samples=71 iops : min= 16, max= 58, avg=34.28, stdev=10.36, samples=71 write: IOPS=36, BW=147KiB/s (150kB/s)(5264KiB/35826msec); 0 zone resets slat (usec): min=58, max=4185, avg=268.48, stdev=247.51 clat (msec): min=36, max=577, avg=295.91, stdev=87.73 lat (msec): min=36, max=577, avg=296.18, stdev=87.75 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 165], 10.00th=[ 197], 20.00th=[ 226], | 30.00th=[ 247], 40.00th=[ 271], 50.00th=[ 288], 60.00th=[ 309], | 70.00th=[ 330], 80.00th=[ 363], 90.00th=[ 418], 95.00th=[ 460], | 99.00th=[ 506], 99.50th=[ 535], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 55, max= 232, per=25.11%, avg=146.15, stdev=37.76, samples=71 iops : min= 13, max= 58, avg=36.30, stdev= 9.49, samples=71 lat (msec) : 10=0.04%, 20=0.04%, 50=0.55%, 100=4.14%, 250=59.73% lat (msec) : 500=34.73%, 750=0.78% cpu : usr=0.14%, sys=1.78%, ctx=4903, 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=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=148251: Sat May 16 07:03:18 2026 read: IOPS=34, BW=139KiB/s (142kB/s)(4984KiB/35841msec) slat (usec): min=1671, max=15150, avg=4557.57, stdev=1787.12 clat (msec): min=4, max=261, avg=138.77, stdev=36.04 lat (msec): min=6, max=265, avg=143.33, stdev=36.50 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 88], 10.00th=[ 99], 20.00th=[ 111], | 30.00th=[ 122], 40.00th=[ 131], 50.00th=[ 138], 60.00th=[ 148], | 70.00th=[ 157], 80.00th=[ 169], 90.00th=[ 182], 95.00th=[ 197], | 99.00th=[ 230], 99.50th=[ 241], 99.90th=[ 259], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 40, max= 247, per=24.87%, avg=139.01, stdev=45.00, samples=71 iops : min= 10, max= 61, avg=34.51, stdev=11.28, samples=71 write: IOPS=36, BW=147KiB/s (150kB/s)(5256KiB/35841msec); 0 zone resets slat (usec): min=42, max=3671, avg=266.26, stdev=219.94 clat (msec): min=49, max=586, avg=299.75, stdev=87.87 lat (msec): min=49, max=586, avg=300.02, stdev=87.90 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 171], 10.00th=[ 199], 20.00th=[ 226], | 30.00th=[ 249], 40.00th=[ 271], 50.00th=[ 292], 60.00th=[ 309], | 70.00th=[ 334], 80.00th=[ 372], 90.00th=[ 435], 95.00th=[ 464], | 99.00th=[ 502], 99.50th=[ 523], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 72, max= 232, per=24.97%, avg=145.35, stdev=33.64, samples=71 iops : min= 18, max= 58, avg=36.08, stdev= 8.44, samples=71 lat (msec) : 10=0.20%, 20=0.27%, 50=0.31%, 100=4.96%, 250=58.48% lat (msec) : 500=35.20%, 750=0.59% cpu : usr=0.20%, sys=1.72%, ctx=5037, 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=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=148252: Sat May 16 07:03:18 2026 read: IOPS=35, BW=142KiB/s (145kB/s)(5060KiB/35736msec) slat (usec): min=1335, max=13786, avg=4511.81, stdev=1845.53 clat (msec): min=4, max=360, avg=141.01, stdev=36.78 lat (msec): min=7, max=363, avg=145.52, stdev=37.32 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 92], 10.00th=[ 102], 20.00th=[ 111], | 30.00th=[ 122], 40.00th=[ 130], 50.00th=[ 140], 60.00th=[ 146], | 70.00th=[ 159], 80.00th=[ 169], 90.00th=[ 186], 95.00th=[ 203], | 99.00th=[ 236], 99.50th=[ 253], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 32, max= 224, per=25.20%, avg=140.87, stdev=40.94, samples=71 iops : min= 8, max= 56, avg=34.97, stdev=10.20, samples=71 write: IOPS=36, BW=145KiB/s (148kB/s)(5180KiB/35736msec); 0 zone resets slat (usec): min=59, max=5380, avg=261.01, stdev=247.04 clat (msec): min=68, max=578, avg=298.46, stdev=86.64 lat (msec): min=68, max=578, avg=298.72, stdev=86.67 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 167], 10.00th=[ 197], 20.00th=[ 228], | 30.00th=[ 251], 40.00th=[ 271], 50.00th=[ 292], 60.00th=[ 309], | 70.00th=[ 334], 80.00th=[ 368], 90.00th=[ 422], 95.00th=[ 464], | 99.00th=[ 514], 99.50th=[ 535], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 71, max= 224, per=24.74%, avg=143.96, stdev=35.34, samples=71 iops : min= 17, max= 56, avg=35.75, stdev= 8.90, samples=71 lat (msec) : 10=0.20%, 20=0.04%, 50=0.23%, 100=4.34%, 250=59.61% lat (msec) : 500=34.73%, 750=0.86% cpu : usr=0.18%, sys=1.72%, ctx=5004, 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=560KiB/s (573kB/s), 139KiB/s-142KiB/s (142kB/s-145kB/s), io=19.6MiB (20.5MB), run=35736-35843msec WRITE: bw=583KiB/s (597kB/s), 145KiB/s-147KiB/s (148kB/s-150kB/s), io=20.4MiB (21.4MB), run=35736-35843msec 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=148261: Sat May 16 07:03:24 2026 read: IOPS=6, BW=241MiB/s (253MB/s)(40.0MiB/166msec) slat (nsec): min=12009k, max=12009k, avg=12009256.00, stdev= 0.00 clat (nsec): min=146886k, max=146886k, avg=146885788.00, stdev= 0.00 lat (nsec): min=158899k, max=158899k, avg=158899079.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 148], 90.00th=[ 148], 95.00th=[ 148], | 99.00th=[ 148], 99.50th=[ 148], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] lat (msec) : 250=100.00% cpu : usr=0.00%, sys=7.27%, ctx=5, 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=241MiB/s (253MB/s), 241MiB/s-241MiB/s (253MB/s-253MB/s), io=40.0MiB (41.9MB), run=166-166msec 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