== sanity test 398c: run fio to test AIO ================= 08:01:37 (1788782497) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.505687 s, 82.9 MB/s osc.lustre-OST0000-osc-ffff8975c3097000.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=179533: Mon Sep 7 08:02:18 2026 write: IOPS=86, BW=347KiB/s (356kB/s)(10.0MiB/29471msec); 0 zone resets slat (usec): min=29, max=9053, avg=167.53, stdev=568.21 clat (msec): min=51, max=283, avg=183.43, stdev=34.18 lat (msec): min=52, max=283, avg=183.60, stdev=34.19 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 131], 10.00th=[ 140], 20.00th=[ 157], | 30.00th=[ 167], 40.00th=[ 176], 50.00th=[ 184], 60.00th=[ 192], | 70.00th=[ 201], 80.00th=[ 211], 90.00th=[ 226], 95.00th=[ 241], | 99.00th=[ 259], 99.50th=[ 268], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 284] bw ( KiB/s): min= 253, max= 508, per=24.96%, avg=346.43, stdev=62.92, samples=58 iops : min= 63, max= 127, avg=86.19, stdev=15.80, samples=58 lat (msec) : 100=0.62%, 250=96.68%, 500=2.70% cpu : usr=0.13%, sys=0.70%, ctx=1768, 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=179534: Mon Sep 7 08:02:18 2026 write: IOPS=86, BW=347KiB/s (355kB/s)(10.0MiB/29501msec); 0 zone resets slat (usec): min=29, max=11006, avg=176.21, stdev=623.10 clat (msec): min=84, max=286, avg=183.49, stdev=33.56 lat (msec): min=85, max=286, avg=183.67, stdev=33.56 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 127], 10.00th=[ 136], 20.00th=[ 159], | 30.00th=[ 167], 40.00th=[ 176], 50.00th=[ 182], 60.00th=[ 190], | 70.00th=[ 201], 80.00th=[ 215], 90.00th=[ 230], 95.00th=[ 241], | 99.00th=[ 257], 99.50th=[ 262], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 233, max= 508, per=24.91%, avg=345.78, stdev=58.84, samples=58 iops : min= 58, max= 127, avg=86.02, stdev=14.78, samples=58 lat (msec) : 100=0.04%, 250=97.62%, 500=2.34% cpu : usr=0.11%, sys=0.80%, ctx=2005, 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=179535: Mon Sep 7 08:02:18 2026 write: IOPS=87, BW=352KiB/s (360kB/s)(10.0MiB/29112msec); 0 zone resets slat (usec): min=23, max=18228, avg=180.74, stdev=659.67 clat (msec): min=13, max=337, avg=181.62, stdev=38.08 lat (msec): min=16, max=337, avg=181.80, stdev=38.07 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 122], 10.00th=[ 136], 20.00th=[ 155], | 30.00th=[ 167], 40.00th=[ 176], 50.00th=[ 184], 60.00th=[ 192], | 70.00th=[ 201], 80.00th=[ 211], 90.00th=[ 224], 95.00th=[ 236], | 99.00th=[ 271], 99.50th=[ 288], 99.90th=[ 317], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 254, max= 512, per=25.33%, avg=351.63, stdev=56.15, samples=57 iops : min= 63, max= 128, avg=87.49, stdev=14.11, samples=57 lat (msec) : 20=0.04%, 50=0.74%, 100=1.52%, 250=94.96%, 500=2.73% cpu : usr=0.18%, sys=0.88%, ctx=2242, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=179536: Mon Sep 7 08:02:18 2026 write: IOPS=86, BW=347KiB/s (355kB/s)(10.0MiB/29504msec); 0 zone resets slat (usec): min=28, max=13899, avg=220.35, stdev=760.88 clat (msec): min=25, max=344, avg=183.47, stdev=35.72 lat (msec): min=25, max=344, avg=183.69, stdev=35.72 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 125], 10.00th=[ 140], 20.00th=[ 157], | 30.00th=[ 165], 40.00th=[ 176], 50.00th=[ 184], 60.00th=[ 192], | 70.00th=[ 203], 80.00th=[ 213], 90.00th=[ 228], 95.00th=[ 239], | 99.00th=[ 264], 99.50th=[ 268], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 254, max= 504, per=25.01%, avg=347.14, stdev=50.14, samples=58 iops : min= 63, max= 126, avg=86.34, stdev=12.56, samples=58 lat (msec) : 50=0.47%, 100=0.59%, 250=96.48%, 500=2.46% cpu : usr=0.18%, sys=1.02%, ctx=2726, 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=1388KiB/s (1422kB/s), 347KiB/s-352KiB/s (355kB/s-360kB/s), io=40.0MiB (41.9MB), run=29112-29504msec 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=179551: Mon Sep 7 08:03:01 2026 read: IOPS=35, BW=144KiB/s (147kB/s)(5048KiB/35130msec) slat (usec): min=47, max=93022, avg=14749.04, stdev=8837.59 clat (msec): min=6, max=419, avg=207.05, stdev=56.98 lat (msec): min=7, max=434, avg=221.81, stdev=58.84 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 128], 10.00th=[ 142], 20.00th=[ 161], | 30.00th=[ 174], 40.00th=[ 186], 50.00th=[ 201], 60.00th=[ 218], | 70.00th=[ 234], 80.00th=[ 255], 90.00th=[ 284], 95.00th=[ 313], | 99.00th=[ 347], 99.50th=[ 355], 99.90th=[ 409], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 71, max= 230, per=25.23%, avg=143.55, stdev=37.53, samples=69 iops : min= 17, max= 57, avg=35.46, stdev= 9.40, samples=69 write: IOPS=36, BW=148KiB/s (151kB/s)(5192KiB/35130msec); 0 zone resets slat (usec): min=32, max=13058, avg=237.33, stdev=849.38 clat (msec): min=32, max=450, avg=216.52, stdev=55.63 lat (msec): min=32, max=450, avg=216.76, stdev=55.65 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 136], 10.00th=[ 148], 20.00th=[ 169], | 30.00th=[ 186], 40.00th=[ 199], 50.00th=[ 213], 60.00th=[ 226], | 70.00th=[ 243], 80.00th=[ 262], 90.00th=[ 292], 95.00th=[ 313], | 99.00th=[ 372], 99.50th=[ 397], 99.90th=[ 430], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 63, max= 223, per=25.00%, avg=148.00, stdev=34.65, samples=69 iops : min= 15, max= 55, avg=36.58, stdev= 8.75, samples=69 lat (msec) : 10=0.04%, 20=0.04%, 50=0.16%, 100=0.47%, 250=75.90% lat (msec) : 500=23.40% cpu : usr=0.21%, sys=1.50%, ctx=4181, majf=0, minf=16 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=179552: Mon Sep 7 08:03:01 2026 read: IOPS=35, BW=141KiB/s (144kB/s)(4976KiB/35267msec) slat (usec): min=3082, max=72419, avg=14867.71, stdev=8892.44 clat (msec): min=28, max=416, avg=207.39, stdev=53.79 lat (msec): min=47, max=439, avg=222.26, stdev=56.32 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 129], 10.00th=[ 144], 20.00th=[ 161], | 30.00th=[ 176], 40.00th=[ 186], 50.00th=[ 203], 60.00th=[ 215], | 70.00th=[ 234], 80.00th=[ 255], 90.00th=[ 279], 95.00th=[ 305], | 99.00th=[ 338], 99.50th=[ 359], 99.90th=[ 401], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 55, max= 248, per=24.68%, avg=140.45, stdev=39.17, samples=69 iops : min= 13, max= 62, avg=34.67, stdev= 9.84, samples=69 write: IOPS=37, BW=149KiB/s (153kB/s)(5264KiB/35267msec); 0 zone resets slat (usec): min=29, max=12532, avg=203.19, stdev=648.84 clat (msec): min=84, max=454, avg=216.66, stdev=54.21 lat (msec): min=84, max=454, avg=216.86, stdev=54.21 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 136], 10.00th=[ 155], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 199], 50.00th=[ 211], 60.00th=[ 226], | 70.00th=[ 245], 80.00th=[ 262], 90.00th=[ 288], 95.00th=[ 317], | 99.00th=[ 355], 99.50th=[ 384], 99.90th=[ 443], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 87, max= 230, per=25.26%, avg=149.52, stdev=35.03, samples=69 iops : min= 21, max= 57, avg=36.96, stdev= 8.78, samples=69 lat (msec) : 50=0.04%, 100=0.35%, 250=75.39%, 500=24.22% cpu : usr=0.22%, sys=1.39%, ctx=3819, 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=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=179553: Mon Sep 7 08:03:01 2026 read: IOPS=35, BW=142KiB/s (145kB/s)(4984KiB/35189msec) slat (usec): min=2579, max=85706, avg=15186.92, stdev=9260.96 clat (msec): min=39, max=457, avg=207.75, stdev=56.38 lat (msec): min=54, max=471, avg=222.94, stdev=58.74 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 129], 10.00th=[ 144], 20.00th=[ 161], | 30.00th=[ 174], 40.00th=[ 186], 50.00th=[ 201], 60.00th=[ 213], | 70.00th=[ 234], 80.00th=[ 255], 90.00th=[ 279], 95.00th=[ 313], | 99.00th=[ 363], 99.50th=[ 384], 99.90th=[ 451], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 71, max= 240, per=24.98%, avg=142.13, stdev=37.10, samples=69 iops : min= 17, max= 60, avg=35.10, stdev= 9.38, samples=69 write: IOPS=37, BW=149KiB/s (153kB/s)(5256KiB/35189msec); 0 zone resets slat (usec): min=30, max=20222, avg=202.87, stdev=826.82 clat (msec): min=100, max=440, avg=214.54, stdev=54.42 lat (msec): min=100, max=440, avg=214.75, stdev=54.43 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 133], 10.00th=[ 150], 20.00th=[ 167], | 30.00th=[ 184], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 224], | 70.00th=[ 241], 80.00th=[ 264], 90.00th=[ 292], 95.00th=[ 313], | 99.00th=[ 347], 99.50th=[ 363], 99.90th=[ 430], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 46, max= 247, per=25.22%, avg=149.28, stdev=38.98, samples=69 iops : min= 11, max= 61, avg=36.90, stdev= 9.73, samples=69 lat (msec) : 50=0.04%, 100=0.31%, 250=76.68%, 500=22.97% cpu : usr=0.24%, sys=1.32%, ctx=3535, 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=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=179554: Mon Sep 7 08:03:01 2026 read: IOPS=35, BW=144KiB/s (147kB/s)(5060KiB/35254msec) slat (usec): min=2842, max=80506, avg=14965.78, stdev=8627.31 clat (msec): min=24, max=381, avg=208.10, stdev=52.68 lat (msec): min=42, max=405, avg=223.07, stdev=54.77 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 134], 10.00th=[ 148], 20.00th=[ 163], | 30.00th=[ 178], 40.00th=[ 190], 50.00th=[ 203], 60.00th=[ 215], | 70.00th=[ 232], 80.00th=[ 253], 90.00th=[ 279], 95.00th=[ 300], | 99.00th=[ 355], 99.50th=[ 363], 99.90th=[ 376], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 70, max= 215, per=25.12%, avg=142.94, stdev=35.47, samples=69 iops : min= 17, max= 53, avg=35.30, stdev= 8.91, samples=69 write: IOPS=36, BW=147KiB/s (150kB/s)(5180KiB/35254msec); 0 zone resets slat (usec): min=32, max=17183, avg=220.48, stdev=1033.33 clat (msec): min=42, max=410, avg=215.21, stdev=55.28 lat (msec): min=42, max=410, avg=215.43, stdev=55.28 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 134], 10.00th=[ 148], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 197], 50.00th=[ 207], 60.00th=[ 224], | 70.00th=[ 241], 80.00th=[ 264], 90.00th=[ 292], 95.00th=[ 317], | 99.00th=[ 363], 99.50th=[ 388], 99.90th=[ 405], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 87, max= 224, per=24.68%, avg=146.13, stdev=35.83, samples=69 iops : min= 21, max= 56, avg=36.12, stdev= 8.96, samples=69 lat (msec) : 50=0.20%, 100=0.23%, 250=75.98%, 500=23.59% cpu : usr=0.25%, sys=1.50%, ctx=4117, 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=569KiB/s (583kB/s), 141KiB/s-144KiB/s (144kB/s-147kB/s), io=19.6MiB (20.5MB), run=35130-35267msec WRITE: bw=592KiB/s (607kB/s), 147KiB/s-149KiB/s (150kB/s-153kB/s), io=20.4MiB (21.4MB), run=35130-35267msec 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=179563: Mon Sep 7 08:03:10 2026 read: IOPS=2, BW=83.9MiB/s (87.9MB/s)(40.0MiB/477msec) slat (nsec): min=32503k, max=32503k, avg=32503378.00, stdev= 0.00 clat (nsec): min=415920k, max=415920k, avg=415919812.00, stdev= 0.00 lat (nsec): min=448428k, max=448428k, avg=448427987.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.73%, 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=83.9MiB/s (87.9MB/s), 83.9MiB/s-83.9MiB/s (87.9MB/s-87.9MB/s), io=40.0MiB (41.9MB), run=477-477msec 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