== sanity test 398c: run fio to test AIO ================= 10:59:11 (1779980351) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.713991 s, 58.7 MB/s osc.lustre-OST0000-osc-ffff9d3f84f26800.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=149087: Thu May 28 11:02:14 2026 write: IOPS=14, BW=59.6KiB/s (61.1kB/s)(10.0MiB/171712msec); 0 zone resets slat (usec): min=52, max=17200, avg=416.41, stdev=1063.78 clat (msec): min=307, max=2366, avg=1071.77, stdev=300.13 lat (msec): min=307, max=2366, avg=1072.19, stdev=300.16 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 667], 10.00th=[ 743], 20.00th=[ 844], | 30.00th=[ 919], 40.00th=[ 986], 50.00th=[ 1036], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1301], 90.00th=[ 1435], 95.00th=[ 1603], | 99.00th=[ 1989], 99.50th=[ 2039], 99.90th=[ 2333], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 254, per=26.56%, avg=63.21, stdev=33.85, samples=318 iops : min= 1, max= 63, avg=15.25, stdev= 8.49, samples=318 lat (msec) : 500=2.50%, 750=7.58%, 1000=33.24%, 2000=55.74%, >=2000=0.94% cpu : usr=0.06%, sys=0.35%, ctx=2215, 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=149088: Thu May 28 11:02:14 2026 write: IOPS=14, BW=59.6KiB/s (61.1kB/s)(10.0MiB/171712msec); 0 zone resets slat (usec): min=41, max=22770, avg=428.52, stdev=1229.17 clat (msec): min=305, max=2363, avg=1071.70, stdev=299.06 lat (msec): min=306, max=2363, avg=1072.13, stdev=299.10 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 659], 10.00th=[ 743], 20.00th=[ 844], | 30.00th=[ 919], 40.00th=[ 986], 50.00th=[ 1045], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1301], 90.00th=[ 1435], 95.00th=[ 1603], | 99.00th=[ 1938], 99.50th=[ 2123], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 134, per=25.12%, avg=59.79, stdev=32.17, samples=336 iops : min= 1, max= 33, avg=14.41, stdev= 8.10, samples=336 lat (msec) : 500=2.58%, 750=7.81%, 1000=31.88%, 2000=56.84%, >=2000=0.90% cpu : usr=0.05%, sys=0.34%, ctx=2206, 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=149089: Thu May 28 11:02:14 2026 write: IOPS=14, BW=59.7KiB/s (61.1kB/s)(10.0MiB/171585msec); 0 zone resets slat (usec): min=52, max=18441, avg=377.56, stdev=920.49 clat (msec): min=153, max=2439, avg=1071.61, stdev=301.71 lat (msec): min=153, max=2439, avg=1071.99, stdev=301.70 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 642], 10.00th=[ 735], 20.00th=[ 852], | 30.00th=[ 927], 40.00th=[ 995], 50.00th=[ 1045], 60.00th=[ 1099], | 70.00th=[ 1200], 80.00th=[ 1301], 90.00th=[ 1435], 95.00th=[ 1603], | 99.00th=[ 1921], 99.50th=[ 2089], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 229, per=25.49%, avg=60.67, stdev=32.18, samples=331 iops : min= 1, max= 57, avg=14.63, stdev= 8.04, samples=331 lat (msec) : 250=0.62%, 500=2.54%, 750=7.97%, 1000=30.90%, 2000=57.27% lat (msec) : >=2000=0.70% cpu : usr=0.06%, sys=0.30%, ctx=2261, 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=149090: Thu May 28 11:02:14 2026 write: IOPS=14, BW=59.8KiB/s (61.2kB/s)(10.0MiB/171249msec); 0 zone resets slat (usec): min=48, max=20839, avg=466.12, stdev=1278.11 clat (msec): min=62, max=2479, avg=1068.83, stdev=303.67 lat (msec): min=63, max=2479, avg=1069.31, stdev=303.72 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 659], 10.00th=[ 726], 20.00th=[ 844], | 30.00th=[ 919], 40.00th=[ 986], 50.00th=[ 1036], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1301], 90.00th=[ 1435], 95.00th=[ 1586], | 99.00th=[ 1972], 99.50th=[ 2089], 99.90th=[ 2433], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 7, max= 168, per=25.28%, avg=60.17, stdev=27.36, samples=334 iops : min= 1, max= 42, avg=14.51, stdev= 6.86, samples=334 lat (msec) : 100=0.04%, 250=0.47%, 500=2.34%, 750=8.55%, 1000=31.72% lat (msec) : 2000=55.90%, >=2000=0.98% cpu : usr=0.06%, sys=0.33%, ctx=2164, 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=239KiB/s (244kB/s), 59.6KiB/s-59.8KiB/s (61.1kB/s-61.2kB/s), io=40.0MiB (41.9MB), run=171249-171712msec 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=149136: Thu May 28 11:04:17 2026 read: IOPS=10, BW=43.4KiB/s (44.4kB/s)(5048KiB/116414msec) slat (usec): min=2843, max=80663, avg=15458.42, stdev=8620.35 clat (msec): min=61, max=1130, avg=452.83, stdev=141.39 lat (msec): min=69, max=1143, avg=468.30, stdev=143.65 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 351], | 30.00th=[ 380], 40.00th=[ 405], 50.00th=[ 426], 60.00th=[ 451], | 70.00th=[ 485], 80.00th=[ 542], 90.00th=[ 617], 95.00th=[ 726], | 99.00th=[ 986], 99.50th=[ 1045], 99.90th=[ 1116], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 128, per=25.14%, avg=43.24, stdev=20.92, samples=228 iops : min= 1, max= 32, avg=10.26, stdev= 5.26, samples=228 write: IOPS=11, BW=44.6KiB/s (45.7kB/s)(5192KiB/116414msec); 0 zone resets slat (usec): min=56, max=15326, avg=508.52, stdev=1210.73 clat (msec): min=262, max=2152, avg=976.75, stdev=289.56 lat (msec): min=262, max=2152, avg=977.26, stdev=289.53 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 600], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 927], 60.00th=[ 995], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1351], 95.00th=[ 1552], | 99.00th=[ 1838], 99.50th=[ 1938], 99.90th=[ 2140], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 95, per=24.61%, avg=44.04, stdev=19.77, samples=230 iops : min= 1, max= 23, avg=10.47, stdev= 4.96, samples=230 lat (msec) : 100=0.20%, 250=0.66%, 500=36.02%, 750=21.41%, 1000=21.25% lat (msec) : 2000=20.31%, >=2000=0.16% cpu : usr=0.12%, sys=0.77%, ctx=4899, 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=149137: Thu May 28 11:04:17 2026 read: IOPS=10, BW=42.7KiB/s (43.8kB/s)(4976KiB/116417msec) slat (usec): min=3151, max=86641, avg=15534.17, stdev=8883.70 clat (msec): min=30, max=1189, avg=453.06, stdev=143.58 lat (msec): min=39, max=1210, avg=468.60, stdev=145.35 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 275], 10.00th=[ 309], 20.00th=[ 347], | 30.00th=[ 380], 40.00th=[ 405], 50.00th=[ 435], 60.00th=[ 456], | 70.00th=[ 493], 80.00th=[ 542], 90.00th=[ 625], 95.00th=[ 709], | 99.00th=[ 1003], 99.50th=[ 1062], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 110, per=24.99%, avg=42.99, stdev=21.46, samples=226 iops : min= 1, max= 27, avg=10.20, stdev= 5.39, samples=226 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5264KiB/116417msec); 0 zone resets slat (usec): min=40, max=16921, avg=498.75, stdev=1179.38 clat (msec): min=152, max=2214, avg=969.84, stdev=293.23 lat (msec): min=152, max=2214, avg=970.34, stdev=293.27 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 584], 10.00th=[ 651], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 927], 60.00th=[ 995], | 70.00th=[ 1083], 80.00th=[ 1200], 90.00th=[ 1334], 95.00th=[ 1552], | 99.00th=[ 1838], 99.50th=[ 1921], 99.90th=[ 2165], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 119, per=25.06%, avg=44.86, stdev=20.29, samples=229 iops : min= 1, max= 29, avg=10.67, stdev= 5.11, samples=229 lat (msec) : 50=0.20%, 100=0.16%, 250=1.21%, 500=34.69%, 750=21.17% lat (msec) : 1000=21.88%, 2000=20.59%, >=2000=0.12% cpu : usr=0.11%, sys=0.76%, ctx=4962, 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=149138: Thu May 28 11:04:17 2026 read: IOPS=10, BW=42.9KiB/s (43.9kB/s)(4984KiB/116303msec) slat (usec): min=52, max=84066, avg=15573.36, stdev=9109.53 clat (msec): min=25, max=1255, avg=461.33, stdev=143.82 lat (msec): min=30, max=1291, avg=476.91, stdev=145.78 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 279], 10.00th=[ 317], 20.00th=[ 355], | 30.00th=[ 388], 40.00th=[ 418], 50.00th=[ 443], 60.00th=[ 468], | 70.00th=[ 502], 80.00th=[ 550], 90.00th=[ 625], 95.00th=[ 726], | 99.00th=[ 1028], 99.50th=[ 1062], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 104, per=25.08%, avg=43.13, stdev=19.79, samples=226 iops : min= 1, max= 26, avg=10.23, stdev= 4.99, samples=226 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5256KiB/116303msec); 0 zone resets slat (usec): min=55, max=14380, avg=532.05, stdev=1087.19 clat (msec): min=132, max=2107, avg=962.43, stdev=299.38 lat (msec): min=132, max=2107, avg=962.96, stdev=299.42 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 558], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 995], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1536], | 99.00th=[ 1854], 99.50th=[ 1955], 99.90th=[ 2072], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 104, per=24.95%, avg=44.66, stdev=19.85, samples=229 iops : min= 1, max= 26, avg=10.62, stdev= 4.99, samples=229 lat (msec) : 50=0.04%, 100=0.20%, 250=1.41%, 500=33.98%, 750=22.97% lat (msec) : 1000=20.94%, 2000=20.31%, >=2000=0.16% cpu : usr=0.10%, sys=0.81%, ctx=5098, 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=149139: Thu May 28 11:04:17 2026 read: IOPS=10, BW=43.5KiB/s (44.5kB/s)(5060KiB/116409msec) slat (usec): min=3471, max=79768, avg=15459.87, stdev=8756.39 clat (msec): min=24, max=1188, avg=455.54, stdev=136.19 lat (msec): min=39, max=1211, avg=471.01, stdev=138.31 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 284], 10.00th=[ 313], 20.00th=[ 351], | 30.00th=[ 384], 40.00th=[ 414], 50.00th=[ 439], 60.00th=[ 464], | 70.00th=[ 493], 80.00th=[ 542], 90.00th=[ 617], 95.00th=[ 718], | 99.00th=[ 902], 99.50th=[ 1036], 99.90th=[ 1133], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 104, per=25.46%, avg=43.80, stdev=19.77, samples=226 iops : min= 1, max= 26, avg=10.40, stdev= 4.97, samples=226 write: IOPS=11, BW=44.5KiB/s (45.6kB/s)(5180KiB/116409msec); 0 zone resets slat (usec): min=45, max=16321, avg=554.21, stdev=1389.69 clat (msec): min=127, max=2147, avg=975.58, stdev=295.66 lat (msec): min=128, max=2147, avg=976.14, stdev=295.71 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 567], 10.00th=[ 651], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 1011], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1351], 95.00th=[ 1586], | 99.00th=[ 1838], 99.50th=[ 1972], 99.90th=[ 2123], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 7, max= 88, per=24.73%, avg=44.26, stdev=18.46, samples=228 iops : min= 1, max= 22, avg=10.53, stdev= 4.67, samples=228 lat (msec) : 50=0.12%, 100=0.16%, 250=0.82%, 500=36.02%, 750=20.90% lat (msec) : 1000=21.02%, 2000=20.74%, >=2000=0.23% cpu : usr=0.10%, sys=0.88%, ctx=5055, 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=172KiB/s (177kB/s), 42.7KiB/s-43.5KiB/s (43.8kB/s-44.5kB/s), io=19.6MiB (20.5MB), run=116303-116417msec WRITE: bw=179KiB/s (184kB/s), 44.5KiB/s-45.2KiB/s (45.6kB/s-46.3kB/s), io=20.4MiB (21.4MB), run=116303-116417msec 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=149160: Thu May 28 11:04:25 2026 read: IOPS=2, BW=94.8MiB/s (99.4MB/s)(40.0MiB/422msec) slat (nsec): min=23269k, max=23269k, avg=23268964.00, stdev= 0.00 clat (nsec): min=379495k, max=379495k, avg=379494775.00, stdev= 0.00 lat (nsec): min=402769k, max=402769k, avg=402769147.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.85%, ctx=28, majf=0, minf=10 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=94.8MiB/s (99.4MB/s), 94.8MiB/s-94.8MiB/s (99.4MB/s-99.4MB/s), io=40.0MiB (41.9MB), run=422-422msec 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