== sanity test 398c: run fio to test AIO ================= 21:12:31 (1787620351) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.35882 s, 117 MB/s osc.lustre-OST0000-osc-ffff96b896359800.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=179672: Mon Aug 24 21:13:03 2026 write: IOPS=108, BW=436KiB/s (446kB/s)(10.0MiB/23496msec); 0 zone resets slat (usec): min=24, max=21579, avg=216.27, stdev=757.97 clat (msec): min=9, max=281, avg=145.41, stdev=34.38 lat (msec): min=10, max=281, avg=145.63, stdev=34.36 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 100], 10.00th=[ 109], 20.00th=[ 120], | 30.00th=[ 127], 40.00th=[ 133], 50.00th=[ 140], 60.00th=[ 148], | 70.00th=[ 157], 80.00th=[ 169], 90.00th=[ 194], 95.00th=[ 209], | 99.00th=[ 255], 99.50th=[ 264], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 284] bw ( KiB/s): min= 255, max= 587, per=24.94%, avg=433.41, stdev=73.53, samples=46 iops : min= 63, max= 146, avg=107.93, stdev=18.41, samples=46 lat (msec) : 10=0.04%, 50=0.16%, 100=4.80%, 250=93.98%, 500=1.02% cpu : usr=0.24%, sys=1.25%, ctx=2704, 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=179673: Mon Aug 24 21:13:03 2026 write: IOPS=108, BW=435KiB/s (445kB/s)(10.0MiB/23563msec); 0 zone resets slat (usec): min=21, max=16081, avg=171.38, stdev=658.62 clat (msec): min=18, max=275, avg=145.68, stdev=34.61 lat (msec): min=20, max=275, avg=145.85, stdev=34.58 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 97], 10.00th=[ 110], 20.00th=[ 120], | 30.00th=[ 127], 40.00th=[ 134], 50.00th=[ 140], 60.00th=[ 146], | 70.00th=[ 157], 80.00th=[ 174], 90.00th=[ 194], 95.00th=[ 209], | 99.00th=[ 251], 99.50th=[ 264], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 275] bw ( KiB/s): min= 255, max= 637, per=24.71%, avg=429.54, stdev=80.02, samples=46 iops : min= 63, max= 159, avg=107.00, stdev=20.10, samples=46 lat (msec) : 20=0.04%, 50=0.20%, 100=5.43%, 250=92.93%, 500=1.41% cpu : usr=0.21%, sys=0.95%, ctx=2074, 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=179674: Mon Aug 24 21:13:03 2026 write: IOPS=109, BW=436KiB/s (447kB/s)(10.0MiB/23461msec); 0 zone resets slat (usec): min=21, max=11302, avg=173.20, stdev=614.78 clat (msec): min=14, max=279, avg=146.24, stdev=34.59 lat (msec): min=14, max=279, avg=146.41, stdev=34.59 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 99], 10.00th=[ 108], 20.00th=[ 122], | 30.00th=[ 128], 40.00th=[ 136], 50.00th=[ 140], 60.00th=[ 148], | 70.00th=[ 159], 80.00th=[ 171], 90.00th=[ 197], 95.00th=[ 218], | 99.00th=[ 249], 99.50th=[ 264], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 255, max= 518, per=24.97%, avg=433.96, stdev=67.98, samples=46 iops : min= 63, max= 129, avg=108.11, stdev=17.04, samples=46 lat (msec) : 20=0.04%, 100=5.90%, 250=93.28%, 500=0.78% cpu : usr=0.19%, sys=1.02%, ctx=2166, 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=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=179675: Mon Aug 24 21:13:03 2026 write: IOPS=108, BW=435KiB/s (445kB/s)(10.0MiB/23560msec); 0 zone resets slat (usec): min=22, max=13221, avg=168.15, stdev=600.02 clat (msec): min=15, max=277, avg=145.58, stdev=35.44 lat (msec): min=15, max=282, avg=145.75, stdev=35.46 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 97], 10.00th=[ 106], 20.00th=[ 121], | 30.00th=[ 128], 40.00th=[ 134], 50.00th=[ 140], 60.00th=[ 148], | 70.00th=[ 159], 80.00th=[ 167], 90.00th=[ 192], 95.00th=[ 215], | 99.00th=[ 253], 99.50th=[ 271], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 249, max= 555, per=24.65%, avg=428.35, stdev=75.44, samples=46 iops : min= 62, max= 138, avg=106.70, stdev=18.89, samples=46 lat (msec) : 20=0.27%, 50=0.23%, 100=5.82%, 250=92.54%, 500=1.13% cpu : usr=0.20%, sys=0.91%, ctx=2232, 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=1738KiB/s (1780kB/s), 435KiB/s-436KiB/s (445kB/s-447kB/s), io=40.0MiB (41.9MB), run=23461-23563msec 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=179688: Mon Aug 24 21:13:38 2026 read: IOPS=46, BW=188KiB/s (192kB/s)(5048KiB/26881msec) slat (usec): min=47, max=99941, avg=11921.88, stdev=7723.79 clat (msec): min=16, max=342, avg=161.44, stdev=46.61 lat (msec): min=22, max=355, avg=173.37, stdev=48.66 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 95], 10.00th=[ 107], 20.00th=[ 121], | 30.00th=[ 134], 40.00th=[ 146], 50.00th=[ 159], 60.00th=[ 171], | 70.00th=[ 186], 80.00th=[ 201], 90.00th=[ 220], 95.00th=[ 245], | 99.00th=[ 300], 99.50th=[ 317], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 95, max= 271, per=25.22%, avg=187.42, stdev=42.82, samples=53 iops : min= 23, max= 67, avg=46.43, stdev=10.72, samples=53 write: IOPS=48, BW=193KiB/s (198kB/s)(5192KiB/26881msec); 0 zone resets slat (usec): min=23, max=16215, avg=195.88, stdev=685.19 clat (msec): min=63, max=336, avg=162.14, stdev=44.50 lat (msec): min=63, max=336, avg=162.33, stdev=44.50 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 96], 10.00th=[ 106], 20.00th=[ 124], | 30.00th=[ 138], 40.00th=[ 148], 50.00th=[ 159], 60.00th=[ 169], | 70.00th=[ 184], 80.00th=[ 199], 90.00th=[ 222], 95.00th=[ 241], | 99.00th=[ 292], 99.50th=[ 300], 99.90th=[ 326], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 93, max= 308, per=24.96%, avg=192.91, stdev=51.09, samples=53 iops : min= 23, max= 77, avg=47.79, stdev=12.80, samples=53 lat (msec) : 20=0.04%, 50=0.20%, 100=6.60%, 250=89.69%, 500=3.48% cpu : usr=0.27%, sys=1.80%, ctx=4322, 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=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=179689: Mon Aug 24 21:13:38 2026 read: IOPS=46, BW=185KiB/s (190kB/s)(4976KiB/26881msec) slat (usec): min=1951, max=84201, avg=11946.43, stdev=7590.13 clat (msec): min=10, max=424, avg=159.04, stdev=46.62 lat (msec): min=30, max=433, avg=170.99, stdev=48.77 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 95], 10.00th=[ 104], 20.00th=[ 118], | 30.00th=[ 132], 40.00th=[ 144], 50.00th=[ 155], 60.00th=[ 165], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 215], 95.00th=[ 236], | 99.00th=[ 296], 99.50th=[ 368], 99.90th=[ 418], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 70, max= 308, per=24.86%, avg=184.74, stdev=48.94, samples=53 iops : min= 17, max= 77, avg=45.75, stdev=12.26, samples=53 write: IOPS=48, BW=196KiB/s (201kB/s)(5264KiB/26881msec); 0 zone resets slat (usec): min=27, max=22698, avg=216.41, stdev=907.11 clat (msec): min=61, max=398, avg=162.56, stdev=43.53 lat (msec): min=62, max=398, avg=162.78, stdev=43.52 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 100], 10.00th=[ 108], 20.00th=[ 126], | 30.00th=[ 138], 40.00th=[ 148], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 182], 80.00th=[ 199], 90.00th=[ 220], 95.00th=[ 239], | 99.00th=[ 284], 99.50th=[ 330], 99.90th=[ 376], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 87, max= 299, per=25.36%, avg=196.06, stdev=48.90, samples=53 iops : min= 21, max= 74, avg=48.60, stdev=12.23, samples=53 lat (msec) : 20=0.04%, 50=0.08%, 100=6.29%, 250=90.78%, 500=2.81% cpu : usr=0.26%, sys=1.80%, ctx=4321, 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=179690: Mon Aug 24 21:13:38 2026 read: IOPS=46, BW=185KiB/s (189kB/s)(4984KiB/26996msec) slat (usec): min=1844, max=64906, avg=12057.28, stdev=7505.41 clat (msec): min=24, max=431, avg=159.99, stdev=47.17 lat (msec): min=42, max=448, avg=172.06, stdev=49.37 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 99], 10.00th=[ 108], 20.00th=[ 123], | 30.00th=[ 133], 40.00th=[ 144], 50.00th=[ 153], 60.00th=[ 163], | 70.00th=[ 178], 80.00th=[ 194], 90.00th=[ 220], 95.00th=[ 245], | 99.00th=[ 300], 99.50th=[ 342], 99.90th=[ 405], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 91, max= 293, per=24.85%, avg=184.66, stdev=50.03, samples=53 iops : min= 22, max= 73, avg=45.74, stdev=12.50, samples=53 write: IOPS=48, BW=195KiB/s (199kB/s)(5256KiB/26996msec); 0 zone resets slat (usec): min=24, max=25527, avg=214.77, stdev=1097.81 clat (msec): min=31, max=402, avg=163.20, stdev=43.44 lat (msec): min=31, max=402, avg=163.42, stdev=43.47 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 101], 10.00th=[ 110], 20.00th=[ 127], | 30.00th=[ 138], 40.00th=[ 150], 50.00th=[ 161], 60.00th=[ 171], | 70.00th=[ 182], 80.00th=[ 197], 90.00th=[ 215], 95.00th=[ 241], | 99.00th=[ 275], 99.50th=[ 300], 99.90th=[ 388], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 95, max= 271, per=25.03%, avg=193.45, stdev=49.63, samples=53 iops : min= 23, max= 67, avg=47.94, stdev=12.49, samples=53 lat (msec) : 50=0.12%, 100=5.59%, 250=90.20%, 500=4.10% cpu : usr=0.27%, sys=1.87%, ctx=4228, 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=179691: Mon Aug 24 21:13:38 2026 read: IOPS=46, BW=187KiB/s (192kB/s)(5060KiB/27002msec) slat (usec): min=2460, max=72099, avg=11850.26, stdev=7024.85 clat (msec): min=27, max=329, avg=158.40, stdev=43.34 lat (msec): min=39, max=345, avg=170.26, stdev=45.19 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 96], 10.00th=[ 106], 20.00th=[ 121], | 30.00th=[ 132], 40.00th=[ 144], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 197], 90.00th=[ 215], 95.00th=[ 230], | 99.00th=[ 284], 99.50th=[ 305], 99.90th=[ 317], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 63, max= 287, per=25.09%, avg=186.43, stdev=48.86, samples=53 iops : min= 15, max= 71, avg=46.17, stdev=12.25, samples=53 write: IOPS=47, BW=192KiB/s (196kB/s)(5180KiB/27002msec); 0 zone resets slat (usec): min=25, max=12816, avg=163.32, stdev=529.60 clat (msec): min=39, max=356, avg=163.89, stdev=43.17 lat (msec): min=39, max=356, avg=164.06, stdev=43.19 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 99], 10.00th=[ 110], 20.00th=[ 126], | 30.00th=[ 138], 40.00th=[ 150], 50.00th=[ 163], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 199], 90.00th=[ 220], 95.00th=[ 236], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 330], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 71, max= 294, per=24.64%, avg=190.49, stdev=49.97, samples=53 iops : min= 17, max= 73, avg=47.21, stdev=12.45, samples=53 lat (msec) : 50=0.20%, 100=5.94%, 250=91.33%, 500=2.54% cpu : usr=0.30%, sys=1.95%, ctx=4000, 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=743KiB/s (761kB/s), 185KiB/s-188KiB/s (189kB/s-192kB/s), io=19.6MiB (20.5MB), run=26881-27002msec WRITE: bw=774KiB/s (792kB/s), 192KiB/s-196KiB/s (196kB/s-201kB/s), io=20.4MiB (21.4MB), run=26881-27002msec 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=179700: Mon Aug 24 21:13:51 2026 read: IOPS=1, BW=77.5MiB/s (81.3MB/s)(40.0MiB/516msec) slat (nsec): min=30184k, max=30184k, avg=30184063.00, stdev= 0.00 clat (nsec): min=465112k, max=465112k, avg=465112329.00, stdev= 0.00 lat (nsec): min=495300k, max=495300k, avg=495300421.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.33%, ctx=8, 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=77.5MiB/s (81.3MB/s), 77.5MiB/s-77.5MiB/s (81.3MB/s-81.3MB/s), io=40.0MiB (41.9MB), run=516-516msec 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