== sanity test 398c: run fio to test AIO ================= 12:40:29 (1777912829) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.152215 s, 276 MB/s osc.lustre-OST0000-osc-ffff8a7c07a9c000.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=148911: Mon May 4 12:41:14 2026 write: IOPS=61, BW=246KiB/s (252kB/s)(10.0MiB/41646msec); 0 zone resets slat (usec): min=38, max=2368, avg=256.93, stdev=133.73 clat (msec): min=44, max=431, avg=259.81, stdev=54.82 lat (msec): min=44, max=431, avg=260.06, stdev=54.83 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 171], 10.00th=[ 197], 20.00th=[ 220], | 30.00th=[ 232], 40.00th=[ 245], 50.00th=[ 259], 60.00th=[ 275], | 70.00th=[ 288], 80.00th=[ 305], 90.00th=[ 330], 95.00th=[ 347], | 99.00th=[ 388], 99.50th=[ 414], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 136, max= 461, per=24.95%, avg=245.27, stdev=48.26, samples=82 iops : min= 34, max= 115, avg=61.27, stdev=12.05, samples=82 lat (msec) : 50=0.16%, 100=0.70%, 250=43.36%, 500=55.78% cpu : usr=0.14%, sys=1.31%, ctx=2857, 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=148912: Mon May 4 12:41:14 2026 write: IOPS=61, BW=246KiB/s (252kB/s)(10.0MiB/41606msec); 0 zone resets slat (usec): min=40, max=4002, avg=251.36, stdev=155.60 clat (msec): min=27, max=499, avg=259.64, stdev=57.24 lat (msec): min=28, max=499, avg=259.90, stdev=57.26 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 171], 10.00th=[ 199], 20.00th=[ 220], | 30.00th=[ 232], 40.00th=[ 245], 50.00th=[ 259], 60.00th=[ 275], | 70.00th=[ 288], 80.00th=[ 305], 90.00th=[ 330], 95.00th=[ 351], | 99.00th=[ 397], 99.50th=[ 418], 99.90th=[ 447], 99.95th=[ 460], | 99.99th=[ 502] bw ( KiB/s): min= 144, max= 531, per=24.99%, avg=245.63, stdev=53.91, samples=82 iops : min= 36, max= 132, avg=61.35, stdev=13.43, samples=82 lat (msec) : 50=0.66%, 100=0.74%, 250=42.62%, 500=55.98% cpu : usr=0.14%, sys=1.26%, ctx=2925, 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=148913: Mon May 4 12:41:14 2026 write: IOPS=61, BW=246KiB/s (252kB/s)(10.0MiB/41646msec); 0 zone resets slat (usec): min=34, max=2699, avg=249.79, stdev=142.12 clat (msec): min=23, max=437, avg=259.80, stdev=54.14 lat (msec): min=23, max=438, avg=260.05, stdev=54.15 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 174], 10.00th=[ 197], 20.00th=[ 218], | 30.00th=[ 232], 40.00th=[ 245], 50.00th=[ 259], 60.00th=[ 275], | 70.00th=[ 288], 80.00th=[ 305], 90.00th=[ 330], 95.00th=[ 347], | 99.00th=[ 380], 99.50th=[ 397], 99.90th=[ 426], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 152, max= 410, per=24.87%, avg=244.45, stdev=47.13, samples=82 iops : min= 38, max= 102, avg=61.06, stdev=11.76, samples=82 lat (msec) : 50=0.04%, 100=0.66%, 250=42.85%, 500=56.45% cpu : usr=0.10%, sys=1.30%, ctx=2829, 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=148914: Mon May 4 12:41:14 2026 write: IOPS=61, BW=246KiB/s (252kB/s)(10.0MiB/41646msec); 0 zone resets slat (usec): min=54, max=2042, avg=251.48, stdev=145.42 clat (msec): min=85, max=457, avg=259.80, stdev=54.04 lat (msec): min=85, max=457, avg=260.05, stdev=54.05 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 176], 10.00th=[ 197], 20.00th=[ 218], | 30.00th=[ 232], 40.00th=[ 245], 50.00th=[ 259], 60.00th=[ 271], | 70.00th=[ 288], 80.00th=[ 305], 90.00th=[ 330], 95.00th=[ 351], | 99.00th=[ 380], 99.50th=[ 401], 99.90th=[ 422], 99.95th=[ 435], | 99.99th=[ 460] bw ( KiB/s): min= 144, max= 410, per=24.98%, avg=245.52, stdev=46.63, samples=82 iops : min= 36, max= 102, avg=61.33, stdev=11.63, samples=82 lat (msec) : 100=0.62%, 250=43.52%, 500=55.86% cpu : usr=0.15%, sys=1.26%, ctx=2883, 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=984KiB/s (1007kB/s), 246KiB/s-246KiB/s (252kB/s-252kB/s), io=40.0MiB (41.9MB), run=41606-41646msec 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=148930: Mon May 4 12:41:44 2026 read: IOPS=48, BW=193KiB/s (198kB/s)(5048KiB/26151msec) slat (usec): min=54, max=11241, avg=3314.36, stdev=1280.63 clat (msec): min=13, max=283, avg=103.05, stdev=22.67 lat (msec): min=17, max=287, avg=106.37, stdev=22.93 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 73], 10.00th=[ 79], 20.00th=[ 86], | 30.00th=[ 90], 40.00th=[ 97], 50.00th=[ 102], 60.00th=[ 107], | 70.00th=[ 113], 80.00th=[ 121], 90.00th=[ 130], 95.00th=[ 140], | 99.00th=[ 161], 99.50th=[ 178], 99.90th=[ 236], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 119, max= 280, per=25.35%, avg=193.69, stdev=43.97, samples=51 iops : min= 29, max= 70, avg=48.33, stdev=11.07, samples=51 write: IOPS=49, BW=199KiB/s (203kB/s)(5192KiB/26151msec); 0 zone resets slat (usec): min=55, max=999, avg=216.78, stdev=114.07 clat (msec): min=24, max=376, avg=218.46, stdev=50.23 lat (msec): min=24, max=377, avg=218.68, stdev=50.24 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 150], 10.00th=[ 159], 20.00th=[ 176], | 30.00th=[ 188], 40.00th=[ 201], 50.00th=[ 218], 60.00th=[ 228], | 70.00th=[ 243], 80.00th=[ 262], 90.00th=[ 288], 95.00th=[ 309], | 99.00th=[ 351], 99.50th=[ 359], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 143, max= 272, per=24.96%, avg=198.47, stdev=28.01, samples=51 iops : min= 35, max= 68, avg=49.53, stdev= 7.00, samples=51 lat (msec) : 20=0.12%, 50=0.55%, 100=22.46%, 250=64.14%, 500=12.73% cpu : usr=0.17%, sys=2.13%, ctx=4804, 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=148931: Mon May 4 12:41:44 2026 read: IOPS=47, BW=190KiB/s (194kB/s)(4976KiB/26206msec) slat (usec): min=1311, max=11194, avg=3327.81, stdev=1259.61 clat (msec): min=4, max=206, avg=102.05, stdev=21.92 lat (msec): min=7, max=210, avg=105.38, stdev=22.16 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 71], 10.00th=[ 79], 20.00th=[ 86], | 30.00th=[ 91], 40.00th=[ 96], 50.00th=[ 102], 60.00th=[ 107], | 70.00th=[ 112], 80.00th=[ 118], 90.00th=[ 130], 95.00th=[ 138], | 99.00th=[ 159], 99.50th=[ 178], 99.90th=[ 203], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 64, max= 296, per=24.74%, avg=188.98, stdev=47.95, samples=52 iops : min= 16, max= 74, avg=47.15, stdev=12.09, samples=52 write: IOPS=50, BW=201KiB/s (206kB/s)(5264KiB/26206msec); 0 zone resets slat (usec): min=47, max=5405, avg=226.04, stdev=198.65 clat (msec): min=51, max=379, avg=218.33, stdev=50.45 lat (msec): min=51, max=379, avg=218.56, stdev=50.46 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 146], 10.00th=[ 159], 20.00th=[ 178], | 30.00th=[ 190], 40.00th=[ 201], 50.00th=[ 213], 60.00th=[ 228], | 70.00th=[ 245], 80.00th=[ 262], 90.00th=[ 284], 95.00th=[ 309], | 99.00th=[ 342], 99.50th=[ 363], 99.90th=[ 376], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 128, max= 280, per=25.20%, avg=200.35, stdev=32.32, samples=52 iops : min= 32, max= 70, avg=50.00, stdev= 8.08, samples=52 lat (msec) : 10=0.16%, 20=0.12%, 50=0.16%, 100=23.32%, 250=62.34% lat (msec) : 500=13.91% cpu : usr=0.26%, sys=2.08%, ctx=4682, 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=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=148932: Mon May 4 12:41:44 2026 read: IOPS=47, BW=190KiB/s (194kB/s)(4984KiB/26248msec) slat (usec): min=1236, max=12111, avg=3334.02, stdev=1213.40 clat (msec): min=13, max=178, avg=103.08, stdev=21.21 lat (msec): min=17, max=182, avg=106.42, stdev=21.35 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 72], 10.00th=[ 80], 20.00th=[ 86], | 30.00th=[ 91], 40.00th=[ 96], 50.00th=[ 103], 60.00th=[ 108], | 70.00th=[ 114], 80.00th=[ 122], 90.00th=[ 130], 95.00th=[ 140], | 99.00th=[ 157], 99.50th=[ 161], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 87, max= 312, per=24.86%, avg=189.90, stdev=45.47, samples=52 iops : min= 21, max= 78, avg=47.38, stdev=11.43, samples=52 write: IOPS=50, BW=200KiB/s (205kB/s)(5256KiB/26248msec); 0 zone resets slat (usec): min=56, max=2193, avg=223.14, stdev=128.45 clat (msec): min=37, max=370, avg=217.89, stdev=50.79 lat (msec): min=37, max=370, avg=218.11, stdev=50.80 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 144], 10.00th=[ 157], 20.00th=[ 176], | 30.00th=[ 188], 40.00th=[ 201], 50.00th=[ 215], 60.00th=[ 228], | 70.00th=[ 243], 80.00th=[ 259], 90.00th=[ 284], 95.00th=[ 309], | 99.00th=[ 351], 99.50th=[ 359], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 128, max= 280, per=24.95%, avg=198.35, stdev=31.46, samples=52 iops : min= 32, max= 70, avg=49.50, stdev= 7.85, samples=52 lat (msec) : 20=0.08%, 50=0.35%, 100=22.93%, 250=64.02%, 500=12.62% cpu : usr=0.20%, sys=2.12%, ctx=4747, 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=148933: Mon May 4 12:41:44 2026 read: IOPS=48, BW=193KiB/s (198kB/s)(5060KiB/26209msec) slat (usec): min=1252, max=10758, avg=3291.86, stdev=1208.14 clat (msec): min=8, max=246, avg=103.33, stdev=21.91 lat (msec): min=13, max=249, avg=106.63, stdev=22.08 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 74], 10.00th=[ 79], 20.00th=[ 86], | 30.00th=[ 92], 40.00th=[ 97], 50.00th=[ 102], 60.00th=[ 108], | 70.00th=[ 113], 80.00th=[ 122], 90.00th=[ 130], 95.00th=[ 138], | 99.00th=[ 157], 99.50th=[ 169], 99.90th=[ 234], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 80, max= 328, per=25.22%, avg=192.71, stdev=44.42, samples=52 iops : min= 20, max= 82, avg=48.08, stdev=11.16, samples=52 write: IOPS=49, BW=198KiB/s (202kB/s)(5180KiB/26209msec); 0 zone resets slat (usec): min=59, max=1824, avg=220.14, stdev=134.62 clat (msec): min=61, max=373, avg=218.87, stdev=49.61 lat (msec): min=61, max=373, avg=219.10, stdev=49.61 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 148], 10.00th=[ 161], 20.00th=[ 178], | 30.00th=[ 190], 40.00th=[ 201], 50.00th=[ 213], 60.00th=[ 228], | 70.00th=[ 243], 80.00th=[ 257], 90.00th=[ 284], 95.00th=[ 313], | 99.00th=[ 359], 99.50th=[ 363], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 128, max= 288, per=24.76%, avg=196.81, stdev=32.99, samples=52 iops : min= 32, max= 72, avg=49.12, stdev= 8.29, samples=52 lat (msec) : 10=0.04%, 20=0.04%, 50=0.27%, 100=23.48%, 250=63.98% lat (msec) : 500=12.19% cpu : usr=0.21%, sys=2.14%, ctx=4717, 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=765KiB/s (783kB/s), 190KiB/s-193KiB/s (194kB/s-198kB/s), io=19.6MiB (20.5MB), run=26151-26248msec WRITE: bw=796KiB/s (815kB/s), 198KiB/s-201KiB/s (202kB/s-206kB/s), io=20.4MiB (21.4MB), run=26151-26248msec 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=148940: Mon May 4 12:41:48 2026 read: IOPS=8, BW=357MiB/s (374MB/s)(40.0MiB/112msec) slat (nsec): min=10979k, max=10979k, avg=10978982.00, stdev= 0.00 clat (nsec): min=94997k, max=94997k, avg=94996840.00, stdev= 0.00 lat (nsec): min=105980k, max=105980k, avg=105980034.00, stdev= 0.00 clat percentiles (usec): | 1.00th=[94897], 5.00th=[94897], 10.00th=[94897], 20.00th=[94897], | 30.00th=[94897], 40.00th=[94897], 50.00th=[94897], 60.00th=[94897], | 70.00th=[94897], 80.00th=[94897], 90.00th=[94897], 95.00th=[94897], | 99.00th=[94897], 99.50th=[94897], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] lat (msec) : 100=100.00% cpu : usr=0.00%, sys=9.01%, ctx=39, majf=0, minf=9 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=357MiB/s (374MB/s), 357MiB/s-357MiB/s (374MB/s-374MB/s), io=40.0MiB (41.9MB), run=112-112msec 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