== sanity test 398c: run fio to test AIO ================= 10:10:41 (1787148641) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.429748 s, 97.6 MB/s osc.lustre-OST0000-osc-ffff9707aea34000.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=180112: Wed Aug 19 10:11:11 2026 write: IOPS=119, BW=479KiB/s (490kB/s)(10.0MiB/21389msec); 0 zone resets slat (usec): min=21, max=10393, avg=141.27, stdev=481.60 clat (msec): min=21, max=241, avg=132.94, stdev=30.29 lat (msec): min=22, max=241, avg=133.09, stdev=30.28 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 90], 10.00th=[ 100], 20.00th=[ 109], | 30.00th=[ 115], 40.00th=[ 122], 50.00th=[ 130], 60.00th=[ 138], | 70.00th=[ 146], 80.00th=[ 155], 90.00th=[ 176], 95.00th=[ 190], | 99.00th=[ 218], 99.50th=[ 228], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 243] bw ( KiB/s): min= 302, max= 640, per=24.96%, avg=477.40, stdev=81.74, samples=42 iops : min= 75, max= 160, avg=119.05, stdev=20.56, samples=42 lat (msec) : 50=0.16%, 100=11.29%, 250=88.55% cpu : usr=0.18%, sys=0.94%, ctx=1632, majf=0, minf=8 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=180113: Wed Aug 19 10:11:11 2026 write: IOPS=120, BW=480KiB/s (492kB/s)(10.0MiB/21312msec); 0 zone resets slat (usec): min=20, max=11276, avg=152.19, stdev=569.44 clat (msec): min=19, max=249, avg=132.86, stdev=31.78 lat (msec): min=20, max=249, avg=133.01, stdev=31.79 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 92], 10.00th=[ 99], 20.00th=[ 106], | 30.00th=[ 115], 40.00th=[ 121], 50.00th=[ 130], 60.00th=[ 138], | 70.00th=[ 146], 80.00th=[ 159], 90.00th=[ 174], 95.00th=[ 194], | 99.00th=[ 228], 99.50th=[ 234], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 278, max= 662, per=25.08%, avg=479.71, stdev=82.38, samples=42 iops : min= 69, max= 165, avg=119.62, stdev=20.70, samples=42 lat (msec) : 20=0.04%, 50=0.12%, 100=11.41%, 250=88.44% cpu : usr=0.19%, sys=0.88%, ctx=1841, majf=0, minf=8 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=180114: Wed Aug 19 10:11:11 2026 write: IOPS=119, BW=480KiB/s (492kB/s)(10.0MiB/21334msec); 0 zone resets slat (usec): min=20, max=20720, avg=201.67, stdev=809.04 clat (msec): min=23, max=247, avg=132.58, stdev=31.93 lat (msec): min=23, max=247, avg=132.79, stdev=31.92 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 90], 10.00th=[ 99], 20.00th=[ 108], | 30.00th=[ 114], 40.00th=[ 121], 50.00th=[ 129], 60.00th=[ 136], | 70.00th=[ 146], 80.00th=[ 157], 90.00th=[ 178], 95.00th=[ 194], | 99.00th=[ 222], 99.50th=[ 239], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 310, max= 640, per=25.06%, avg=479.36, stdev=81.76, samples=42 iops : min= 77, max= 160, avg=119.57, stdev=20.57, samples=42 lat (msec) : 50=0.66%, 100=11.09%, 250=88.24% cpu : usr=0.18%, sys=1.19%, ctx=2613, 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=180115: Wed Aug 19 10:11:11 2026 write: IOPS=119, BW=478KiB/s (490kB/s)(10.0MiB/21402msec); 0 zone resets slat (usec): min=20, max=25645, avg=164.66, stdev=790.07 clat (msec): min=14, max=235, avg=132.92, stdev=29.93 lat (msec): min=14, max=235, avg=133.09, stdev=29.91 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 93], 10.00th=[ 99], 20.00th=[ 109], | 30.00th=[ 115], 40.00th=[ 121], 50.00th=[ 129], 60.00th=[ 136], | 70.00th=[ 146], 80.00th=[ 157], 90.00th=[ 176], 95.00th=[ 192], | 99.00th=[ 218], 99.50th=[ 228], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 295, max= 636, per=24.89%, avg=476.24, stdev=79.33, samples=42 iops : min= 73, max= 159, avg=118.74, stdev=19.97, samples=42 lat (msec) : 20=0.04%, 50=0.12%, 100=10.98%, 250=88.87% cpu : usr=0.19%, sys=1.10%, ctx=2214, 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 Run status group 0 (all jobs): WRITE: bw=1914KiB/s (1960kB/s), 478KiB/s-480KiB/s (490kB/s-492kB/s), io=40.0MiB (41.9MB), run=21312-21402msec 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=180129: Wed Aug 19 10:11:47 2026 read: IOPS=46, BW=185KiB/s (189kB/s)(5048KiB/27296msec) slat (usec): min=33, max=55580, avg=12015.84, stdev=7240.96 clat (msec): min=11, max=346, avg=161.75, stdev=45.49 lat (msec): min=14, max=369, avg=173.77, stdev=47.52 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 92], 10.00th=[ 103], 20.00th=[ 123], | 30.00th=[ 136], 40.00th=[ 148], 50.00th=[ 161], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 199], 90.00th=[ 220], 95.00th=[ 241], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 330], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 85, max= 280, per=24.99%, avg=183.65, stdev=43.29, samples=54 iops : min= 21, max= 70, avg=45.44, stdev=10.85, samples=54 write: IOPS=47, BW=190KiB/s (195kB/s)(5192KiB/27296msec); 0 zone resets slat (usec): min=22, max=9733, avg=184.21, stdev=600.56 clat (msec): min=39, max=342, avg=165.86, stdev=46.02 lat (msec): min=39, max=342, avg=166.04, stdev=46.00 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 96], 10.00th=[ 107], 20.00th=[ 126], | 30.00th=[ 142], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 188], 80.00th=[ 205], 90.00th=[ 224], 95.00th=[ 247], | 99.00th=[ 292], 99.50th=[ 309], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 95, max= 289, per=24.78%, avg=189.57, stdev=41.90, samples=54 iops : min= 23, max= 72, avg=46.93, stdev=10.54, samples=54 lat (msec) : 20=0.04%, 50=0.08%, 100=7.42%, 250=88.32%, 500=4.14% cpu : usr=0.29%, sys=1.81%, ctx=4215, 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=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=180130: Wed Aug 19 10:11:47 2026 read: IOPS=45, BW=182KiB/s (187kB/s)(4976KiB/27293msec) slat (usec): min=47, max=104380, avg=11951.20, stdev=7363.79 clat (msec): min=14, max=331, avg=161.16, stdev=46.72 lat (msec): min=20, max=351, avg=173.12, stdev=48.68 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 93], 10.00th=[ 102], 20.00th=[ 121], | 30.00th=[ 136], 40.00th=[ 146], 50.00th=[ 159], 60.00th=[ 171], | 70.00th=[ 184], 80.00th=[ 201], 90.00th=[ 222], 95.00th=[ 247], | 99.00th=[ 279], 99.50th=[ 296], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 96, max= 272, per=24.61%, avg=180.87, stdev=44.90, samples=54 iops : min= 24, max= 68, avg=44.72, stdev=11.27, samples=54 write: IOPS=48, BW=193KiB/s (197kB/s)(5264KiB/27293msec); 0 zone resets slat (usec): min=23, max=9807, avg=193.80, stdev=632.31 clat (msec): min=34, max=329, avg=166.47, stdev=45.05 lat (msec): min=34, max=329, avg=166.67, stdev=45.06 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 99], 10.00th=[ 111], 20.00th=[ 127], | 30.00th=[ 140], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 176], | 70.00th=[ 188], 80.00th=[ 205], 90.00th=[ 224], 95.00th=[ 247], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 317], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 116, max= 335, per=25.15%, avg=192.41, stdev=44.96, samples=54 iops : min= 29, max= 83, avg=47.65, stdev=11.27, samples=54 lat (msec) : 20=0.04%, 50=0.08%, 100=6.91%, 250=88.48%, 500=4.49% cpu : usr=0.23%, sys=1.70%, ctx=4108, 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=180131: Wed Aug 19 10:11:47 2026 read: IOPS=46, BW=185KiB/s (189kB/s)(4984KiB/27013msec) slat (usec): min=36, max=48968, avg=11518.84, stdev=6516.89 clat (msec): min=25, max=384, avg=161.10, stdev=47.10 lat (msec): min=41, max=394, avg=172.63, stdev=48.86 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 92], 10.00th=[ 103], 20.00th=[ 120], | 30.00th=[ 136], 40.00th=[ 148], 50.00th=[ 159], 60.00th=[ 169], | 70.00th=[ 182], 80.00th=[ 199], 90.00th=[ 222], 95.00th=[ 245], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 368], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 77, max= 296, per=25.03%, avg=184.00, stdev=46.38, samples=53 iops : min= 19, max= 74, avg=45.53, stdev=11.68, samples=53 write: IOPS=48, BW=195KiB/s (199kB/s)(5256KiB/27013msec); 0 zone resets slat (usec): min=25, max=25673, avg=205.25, stdev=925.06 clat (msec): min=41, max=331, avg=164.53, stdev=47.33 lat (msec): min=41, max=331, avg=164.73, stdev=47.37 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 93], 10.00th=[ 106], 20.00th=[ 125], | 30.00th=[ 138], 40.00th=[ 150], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 186], 80.00th=[ 203], 90.00th=[ 228], 95.00th=[ 249], | 99.00th=[ 292], 99.50th=[ 305], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 95, max= 304, per=25.28%, avg=193.36, stdev=48.95, samples=53 iops : min= 23, max= 76, avg=47.87, stdev=12.23, samples=53 lat (msec) : 50=0.20%, 100=8.20%, 250=86.99%, 500=4.61% cpu : usr=0.31%, sys=1.85%, ctx=4058, 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=180132: Wed Aug 19 10:11:47 2026 read: IOPS=46, BW=186KiB/s (191kB/s)(5060KiB/27169msec) slat (usec): min=51, max=47053, avg=11837.22, stdev=6803.76 clat (msec): min=59, max=356, avg=159.74, stdev=42.98 lat (msec): min=63, max=362, avg=171.59, stdev=44.94 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 94], 10.00th=[ 105], 20.00th=[ 124], | 30.00th=[ 136], 40.00th=[ 146], 50.00th=[ 159], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 215], 95.00th=[ 236], | 99.00th=[ 271], 99.50th=[ 284], 99.90th=[ 305], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 101, max= 289, per=25.23%, avg=185.47, stdev=45.86, samples=53 iops : min= 25, max= 72, avg=45.91, stdev=11.54, samples=53 write: IOPS=47, BW=191KiB/s (195kB/s)(5180KiB/27169msec); 0 zone resets slat (usec): min=25, max=16541, avg=184.35, stdev=697.88 clat (msec): min=37, max=332, avg=166.26, stdev=45.76 lat (msec): min=37, max=332, avg=166.45, stdev=45.77 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 100], 10.00th=[ 110], 20.00th=[ 127], | 30.00th=[ 140], 40.00th=[ 150], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 188], 80.00th=[ 205], 90.00th=[ 226], 95.00th=[ 247], | 99.00th=[ 300], 99.50th=[ 321], 99.90th=[ 330], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 103, max= 264, per=24.74%, avg=189.25, stdev=36.25, samples=53 iops : min= 25, max= 66, avg=46.83, stdev= 9.08, samples=53 lat (msec) : 50=0.04%, 100=6.56%, 250=89.73%, 500=3.67% cpu : usr=0.24%, sys=1.75%, ctx=4052, 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=735KiB/s (753kB/s), 182KiB/s-186KiB/s (187kB/s-191kB/s), io=19.6MiB (20.5MB), run=27013-27296msec WRITE: bw=765KiB/s (784kB/s), 190KiB/s-195KiB/s (195kB/s-199kB/s), io=20.4MiB (21.4MB), run=27013-27296msec 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=180140: Wed Aug 19 10:11:56 2026 read: IOPS=1, BW=74.6MiB/s (78.3MB/s)(40.0MiB/536msec) slat (nsec): min=25341k, max=25341k, avg=25340724.00, stdev= 0.00 clat (nsec): min=489369k, max=489369k, avg=489368893.00, stdev= 0.00 lat (nsec): min=514714k, max=514714k, avg=514713714.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.06%, ctx=9, 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=74.6MiB/s (78.3MB/s), 74.6MiB/s-74.6MiB/s (78.3MB/s-78.3MB/s), io=40.0MiB (41.9MB), run=536-536msec 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