== sanity test 398c: run fio to test AIO ================= 00:31:22 (1786422682) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.48307 s, 86.8 MB/s osc.lustre-OST0000-osc-ffff956109328800.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=179115: Tue Aug 11 00:31:59 2026 write: IOPS=95, BW=380KiB/s (389kB/s)(10.0MiB/26942msec); 0 zone resets slat (usec): min=35, max=14022, avg=275.71, stdev=782.01 clat (msec): min=21, max=402, avg=167.34, stdev=50.91 lat (msec): min=21, max=402, avg=167.62, stdev=50.94 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 102], 10.00th=[ 112], 20.00th=[ 126], | 30.00th=[ 138], 40.00th=[ 148], 50.00th=[ 159], 60.00th=[ 171], | 70.00th=[ 186], 80.00th=[ 205], 90.00th=[ 234], 95.00th=[ 259], | 99.00th=[ 330], 99.50th=[ 376], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 401] bw ( KiB/s): min= 208, max= 579, per=25.00%, avg=379.32, stdev=81.42, samples=53 iops : min= 52, max= 144, avg=94.43, stdev=20.37, samples=53 lat (msec) : 50=0.08%, 100=4.61%, 250=88.01%, 500=7.30% cpu : usr=0.16%, sys=1.26%, ctx=2578, 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=179116: Tue Aug 11 00:31:59 2026 write: IOPS=95, BW=382KiB/s (391kB/s)(10.0MiB/26792msec); 0 zone resets slat (usec): min=36, max=17585, avg=290.06, stdev=874.75 clat (msec): min=39, max=411, avg=167.01, stdev=52.23 lat (msec): min=40, max=411, avg=167.30, stdev=52.26 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 99], 10.00th=[ 110], 20.00th=[ 126], | 30.00th=[ 138], 40.00th=[ 146], 50.00th=[ 159], 60.00th=[ 171], | 70.00th=[ 188], 80.00th=[ 205], 90.00th=[ 232], 95.00th=[ 257], | 99.00th=[ 359], 99.50th=[ 380], 99.90th=[ 409], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 192, max= 654, per=25.06%, avg=380.21, stdev=87.90, samples=53 iops : min= 48, max= 163, avg=94.68, stdev=21.97, samples=53 lat (msec) : 50=0.08%, 100=5.86%, 250=87.85%, 500=6.21% cpu : usr=0.12%, sys=1.30%, ctx=2757, 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=179117: Tue Aug 11 00:31:59 2026 write: IOPS=94, BW=380KiB/s (389kB/s)(10.0MiB/26956msec); 0 zone resets slat (usec): min=34, max=11430, avg=242.99, stdev=624.51 clat (msec): min=16, max=391, avg=167.38, stdev=50.53 lat (msec): min=16, max=391, avg=167.63, stdev=50.55 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 103], 10.00th=[ 113], 20.00th=[ 126], | 30.00th=[ 138], 40.00th=[ 150], 50.00th=[ 161], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 207], 90.00th=[ 236], 95.00th=[ 266], | 99.00th=[ 321], 99.50th=[ 368], 99.90th=[ 388], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 230, max= 602, per=24.88%, avg=377.42, stdev=88.71, samples=53 iops : min= 57, max= 150, avg=93.98, stdev=22.23, samples=53 lat (msec) : 20=0.04%, 50=0.16%, 100=4.61%, 250=88.44%, 500=6.76% cpu : usr=0.16%, sys=1.04%, ctx=2056, 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=179118: Tue Aug 11 00:31:59 2026 write: IOPS=94, BW=379KiB/s (388kB/s)(10.0MiB/26991msec); 0 zone resets slat (usec): min=37, max=17013, avg=286.99, stdev=806.83 clat (msec): min=59, max=399, avg=167.39, stdev=51.33 lat (msec): min=67, max=399, avg=167.68, stdev=51.35 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 100], 10.00th=[ 113], 20.00th=[ 127], | 30.00th=[ 136], 40.00th=[ 148], 50.00th=[ 157], 60.00th=[ 171], | 70.00th=[ 188], 80.00th=[ 205], 90.00th=[ 228], 95.00th=[ 259], | 99.00th=[ 363], 99.50th=[ 384], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 160, max= 579, per=24.86%, avg=377.19, stdev=81.63, samples=53 iops : min= 40, max= 144, avg=93.92, stdev=20.44, samples=53 lat (msec) : 100=5.00%, 250=88.09%, 500=6.91% cpu : usr=0.20%, sys=1.15%, ctx=2705, 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=1518KiB/s (1554kB/s), 379KiB/s-382KiB/s (388kB/s-391kB/s), io=40.0MiB (41.9MB), run=26792-26991msec 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=179132: Tue Aug 11 00:32:35 2026 read: IOPS=44, BW=180KiB/s (184kB/s)(5048KiB/28045msec) slat (usec): min=62, max=61559, avg=12554.94, stdev=7857.80 clat (msec): min=7, max=396, avg=166.75, stdev=54.54 lat (msec): min=7, max=441, avg=179.31, stdev=57.79 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 89], 10.00th=[ 102], 20.00th=[ 118], | 30.00th=[ 136], 40.00th=[ 148], 50.00th=[ 161], 60.00th=[ 178], | 70.00th=[ 194], 80.00th=[ 211], 90.00th=[ 234], 95.00th=[ 259], | 99.00th=[ 326], 99.50th=[ 351], 99.90th=[ 384], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 87, max= 312, per=25.37%, avg=179.60, stdev=50.54, samples=55 iops : min= 21, max= 78, avg=44.51, stdev=12.65, samples=55 write: IOPS=46, BW=185KiB/s (190kB/s)(5192KiB/28045msec); 0 zone resets slat (usec): min=45, max=12611, avg=289.32, stdev=666.46 clat (msec): min=36, max=370, avg=170.68, stdev=50.83 lat (msec): min=36, max=370, avg=170.97, stdev=50.84 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 94], 10.00th=[ 103], 20.00th=[ 123], | 30.00th=[ 142], 40.00th=[ 155], 50.00th=[ 169], 60.00th=[ 184], | 70.00th=[ 201], 80.00th=[ 213], 90.00th=[ 234], 95.00th=[ 255], | 99.00th=[ 300], 99.50th=[ 309], 99.90th=[ 368], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 72, max= 304, per=25.10%, avg=185.00, stdev=57.28, samples=55 iops : min= 18, max= 76, avg=45.87, stdev=14.35, samples=55 lat (msec) : 10=0.04%, 20=0.12%, 50=0.12%, 100=8.09%, 250=85.00% lat (msec) : 500=6.64% cpu : usr=0.24%, sys=2.07%, ctx=4354, 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=179133: Tue Aug 11 00:32:35 2026 read: IOPS=44, BW=176KiB/s (180kB/s)(4976KiB/28270msec) slat (usec): min=2408, max=73740, avg=12700.33, stdev=7941.87 clat (msec): min=41, max=403, avg=166.51, stdev=52.27 lat (msec): min=51, max=423, avg=179.22, stdev=55.08 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 94], 10.00th=[ 103], 20.00th=[ 120], | 30.00th=[ 136], 40.00th=[ 148], 50.00th=[ 163], 60.00th=[ 178], | 70.00th=[ 192], 80.00th=[ 209], 90.00th=[ 232], 95.00th=[ 251], | 99.00th=[ 334], 99.50th=[ 363], 99.90th=[ 393], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 87, max= 320, per=24.74%, avg=175.16, stdev=54.20, samples=56 iops : min= 21, max= 80, avg=43.39, stdev=13.58, samples=56 write: IOPS=46, BW=186KiB/s (191kB/s)(5264KiB/28270msec); 0 zone resets slat (usec): min=40, max=12008, avg=278.74, stdev=605.99 clat (msec): min=75, max=393, avg=172.30, stdev=51.50 lat (msec): min=75, max=393, avg=172.58, stdev=51.49 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 96], 10.00th=[ 108], 20.00th=[ 124], | 30.00th=[ 142], 40.00th=[ 155], 50.00th=[ 171], 60.00th=[ 186], | 70.00th=[ 199], 80.00th=[ 218], 90.00th=[ 241], 95.00th=[ 262], | 99.00th=[ 292], 99.50th=[ 317], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 72, max= 327, per=25.23%, avg=185.93, stdev=56.60, samples=56 iops : min= 18, max= 81, avg=46.09, stdev=14.19, samples=56 lat (msec) : 50=0.04%, 100=7.38%, 250=86.41%, 500=6.17% cpu : usr=0.25%, sys=2.10%, ctx=4514, 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=179134: Tue Aug 11 00:32:35 2026 read: IOPS=44, BW=176KiB/s (180kB/s)(4984KiB/28299msec) slat (usec): min=1899, max=72505, avg=12860.47, stdev=8002.98 clat (msec): min=67, max=382, avg=168.61, stdev=54.59 lat (msec): min=75, max=450, avg=181.48, stdev=57.96 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 92], 10.00th=[ 102], 20.00th=[ 121], | 30.00th=[ 134], 40.00th=[ 146], 50.00th=[ 161], 60.00th=[ 178], | 70.00th=[ 199], 80.00th=[ 215], 90.00th=[ 243], 95.00th=[ 262], | 99.00th=[ 321], 99.50th=[ 342], 99.90th=[ 372], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 88, max= 320, per=24.90%, avg=176.29, stdev=52.72, samples=56 iops : min= 22, max= 80, avg=43.68, stdev=13.24, samples=56 write: IOPS=46, BW=186KiB/s (190kB/s)(5256KiB/28299msec); 0 zone resets slat (usec): min=54, max=11453, avg=312.02, stdev=782.32 clat (msec): min=70, max=402, avg=170.19, stdev=50.90 lat (msec): min=70, max=402, avg=170.50, stdev=50.93 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 96], 10.00th=[ 105], 20.00th=[ 122], | 30.00th=[ 140], 40.00th=[ 153], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 197], 80.00th=[ 213], 90.00th=[ 234], 95.00th=[ 253], | 99.00th=[ 305], 99.50th=[ 338], 99.90th=[ 368], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 80, max= 367, per=25.09%, avg=184.93, stdev=61.21, samples=56 iops : min= 20, max= 91, avg=45.84, stdev=15.28, samples=56 lat (msec) : 100=8.44%, 250=84.80%, 500=6.76% cpu : usr=0.31%, sys=2.25%, ctx=4582, 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=179135: Tue Aug 11 00:32:35 2026 read: IOPS=44, BW=179KiB/s (183kB/s)(5060KiB/28318msec) slat (usec): min=73, max=77533, avg=12325.83, stdev=8143.01 clat (msec): min=70, max=392, avg=169.69, stdev=54.63 lat (msec): min=74, max=423, avg=182.02, stdev=57.53 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 92], 10.00th=[ 104], 20.00th=[ 121], | 30.00th=[ 136], 40.00th=[ 150], 50.00th=[ 161], 60.00th=[ 178], | 70.00th=[ 199], 80.00th=[ 215], 90.00th=[ 241], 95.00th=[ 262], | 99.00th=[ 342], 99.50th=[ 359], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 95, max= 311, per=25.18%, avg=178.29, stdev=49.29, samples=56 iops : min= 23, max= 77, avg=44.18, stdev=12.37, samples=56 write: IOPS=45, BW=183KiB/s (187kB/s)(5180KiB/28318msec); 0 zone resets slat (usec): min=38, max=9815, avg=303.44, stdev=794.87 clat (msec): min=71, max=377, avg=170.21, stdev=51.65 lat (msec): min=71, max=378, avg=170.52, stdev=51.65 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 94], 10.00th=[ 104], 20.00th=[ 120], | 30.00th=[ 140], 40.00th=[ 155], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 197], 80.00th=[ 213], 90.00th=[ 241], 95.00th=[ 259], | 99.00th=[ 317], 99.50th=[ 326], 99.90th=[ 355], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 80, max= 352, per=24.67%, avg=181.82, stdev=63.59, samples=56 iops : min= 20, max= 88, avg=45.07, stdev=15.94, samples=56 lat (msec) : 100=8.44%, 250=84.73%, 500=6.84% cpu : usr=0.20%, sys=2.14%, ctx=4515, 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=709KiB/s (726kB/s), 176KiB/s-180KiB/s (180kB/s-184kB/s), io=19.6MiB (20.5MB), run=28045-28318msec WRITE: bw=738KiB/s (755kB/s), 183KiB/s-186KiB/s (187kB/s-191kB/s), io=20.4MiB (21.4MB), run=28045-28318msec 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=179144: Tue Aug 11 00:32:45 2026 read: IOPS=1, BW=56.3MiB/s (58.0MB/s)(40.0MiB/711msec) slat (nsec): min=48902k, max=48902k, avg=48902003.00, stdev= 0.00 clat (nsec): min=620064k, max=620064k, avg=620064217.00, stdev= 0.00 lat (nsec): min=668971k, max=668971k, avg=668970534.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] lat (msec) : 750=100.00% cpu : usr=0.14%, sys=2.39%, ctx=5, 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=56.3MiB/s (58.0MB/s), 56.3MiB/s-56.3MiB/s (58.0MB/s-58.0MB/s), io=40.0MiB (41.9MB), run=711-711msec 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