== sanity test 398c: run fio to test AIO ================= 20:04:18 (1787702658) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.52478 s, 79.9 MB/s osc.lustre-OST0000-osc-ffff91561681c800.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=180426: Tue Aug 25 20:05:01 2026 write: IOPS=83, BW=335KiB/s (343kB/s)(10.0MiB/30554msec); 0 zone resets slat (usec): min=23, max=21436, avg=289.66, stdev=996.13 clat (msec): min=29, max=341, avg=189.44, stdev=44.98 lat (msec): min=29, max=342, avg=189.74, stdev=44.97 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 123], 10.00th=[ 140], 20.00th=[ 153], | 30.00th=[ 165], 40.00th=[ 174], 50.00th=[ 184], 60.00th=[ 194], | 70.00th=[ 207], 80.00th=[ 226], 90.00th=[ 255], 95.00th=[ 271], | 99.00th=[ 313], 99.50th=[ 317], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 342] bw ( KiB/s): min= 207, max= 503, per=24.93%, avg=334.07, stdev=73.25, samples=60 iops : min= 51, max= 125, avg=83.15, stdev=18.35, samples=60 lat (msec) : 50=0.12%, 100=0.82%, 250=88.12%, 500=10.94% cpu : usr=0.19%, sys=1.10%, ctx=2529, 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=180427: Tue Aug 25 20:05:01 2026 write: IOPS=84, BW=336KiB/s (344kB/s)(10.0MiB/30473msec); 0 zone resets slat (usec): min=25, max=18058, avg=269.09, stdev=929.80 clat (msec): min=37, max=351, avg=189.14, stdev=44.61 lat (msec): min=40, max=351, avg=189.41, stdev=44.60 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 121], 10.00th=[ 136], 20.00th=[ 150], | 30.00th=[ 165], 40.00th=[ 176], 50.00th=[ 186], 60.00th=[ 194], | 70.00th=[ 207], 80.00th=[ 224], 90.00th=[ 251], 95.00th=[ 271], | 99.00th=[ 305], 99.50th=[ 321], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 239, max= 505, per=25.01%, avg=335.10, stdev=66.09, samples=60 iops : min= 59, max= 126, avg=83.40, stdev=16.57, samples=60 lat (msec) : 50=0.04%, 100=0.70%, 250=88.87%, 500=10.39% cpu : usr=0.19%, sys=0.98%, ctx=2691, 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=180428: Tue Aug 25 20:05:01 2026 write: IOPS=84, BW=338KiB/s (346kB/s)(10.0MiB/30289msec); 0 zone resets slat (usec): min=27, max=20099, avg=231.43, stdev=848.62 clat (msec): min=23, max=379, avg=188.78, stdev=45.91 lat (msec): min=24, max=380, avg=189.01, stdev=45.92 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 126], 10.00th=[ 134], 20.00th=[ 150], | 30.00th=[ 165], 40.00th=[ 174], 50.00th=[ 184], 60.00th=[ 194], | 70.00th=[ 211], 80.00th=[ 226], 90.00th=[ 251], 95.00th=[ 268], | 99.00th=[ 317], 99.50th=[ 326], 99.90th=[ 338], 99.95th=[ 359], | 99.99th=[ 380] bw ( KiB/s): min= 247, max= 503, per=25.12%, avg=336.58, stdev=71.41, samples=60 iops : min= 61, max= 125, avg=83.77, stdev=17.85, samples=60 lat (msec) : 50=0.04%, 100=1.91%, 250=87.70%, 500=10.35% cpu : usr=0.19%, sys=0.93%, ctx=1646, 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=180429: Tue Aug 25 20:05:01 2026 write: IOPS=83, BW=335KiB/s (343kB/s)(10.0MiB/30542msec); 0 zone resets slat (usec): min=23, max=14298, avg=204.73, stdev=642.76 clat (msec): min=20, max=338, avg=189.21, stdev=45.78 lat (msec): min=20, max=338, avg=189.42, stdev=45.78 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 125], 10.00th=[ 136], 20.00th=[ 150], | 30.00th=[ 161], 40.00th=[ 171], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 211], 80.00th=[ 230], 90.00th=[ 249], 95.00th=[ 271], | 99.00th=[ 309], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 127, max= 509, per=24.94%, avg=334.13, stdev=79.00, samples=60 iops : min= 31, max= 127, avg=83.15, stdev=19.80, samples=60 lat (msec) : 50=0.08%, 100=1.13%, 250=89.06%, 500=9.73% cpu : usr=0.18%, sys=0.94%, ctx=2134, 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=1341KiB/s (1373kB/s), 335KiB/s-338KiB/s (343kB/s-346kB/s), io=40.0MiB (41.9MB), run=30289-30554msec 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=180445: Tue Aug 25 20:05:43 2026 read: IOPS=38, BW=153KiB/s (156kB/s)(5048KiB/33054msec) slat (usec): min=39, max=65706, avg=14760.10, stdev=8359.58 clat (msec): min=13, max=372, avg=196.08, stdev=48.68 lat (msec): min=27, max=394, avg=210.85, stdev=50.63 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 117], 10.00th=[ 136], 20.00th=[ 157], | 30.00th=[ 171], 40.00th=[ 184], 50.00th=[ 197], 60.00th=[ 207], | 70.00th=[ 220], 80.00th=[ 234], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 334], 99.50th=[ 342], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 29, max= 247, per=25.14%, avg=152.32, stdev=40.60, samples=65 iops : min= 7, max= 61, avg=37.52, stdev=10.17, samples=65 write: IOPS=39, BW=157KiB/s (161kB/s)(5192KiB/33054msec); 0 zone resets slat (usec): min=24, max=9775, avg=222.24, stdev=573.73 clat (msec): min=43, max=403, avg=199.70, stdev=48.54 lat (msec): min=44, max=403, avg=199.92, stdev=48.53 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 127], 10.00th=[ 138], 20.00th=[ 157], | 30.00th=[ 174], 40.00th=[ 188], 50.00th=[ 201], 60.00th=[ 209], | 70.00th=[ 222], 80.00th=[ 239], 90.00th=[ 259], 95.00th=[ 279], | 99.00th=[ 334], 99.50th=[ 388], 99.90th=[ 397], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 55, max= 262, per=25.31%, avg=159.47, stdev=43.43, samples=64 iops : min= 13, max= 65, avg=39.33, stdev=10.87, samples=64 lat (msec) : 20=0.04%, 50=0.08%, 100=0.70%, 250=85.86%, 500=13.32% cpu : usr=0.32%, sys=1.90%, ctx=4309, 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=180446: Tue Aug 25 20:05:43 2026 read: IOPS=37, BW=152KiB/s (155kB/s)(4976KiB/32832msec) slat (usec): min=37, max=58078, avg=14265.24, stdev=8019.06 clat (msec): min=6, max=424, avg=192.23, stdev=50.24 lat (msec): min=30, max=437, avg=206.51, stdev=52.09 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 113], 10.00th=[ 133], 20.00th=[ 153], | 30.00th=[ 167], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 201], | 70.00th=[ 213], 80.00th=[ 228], 90.00th=[ 253], 95.00th=[ 279], | 99.00th=[ 342], 99.50th=[ 359], 99.90th=[ 409], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 29, max= 239, per=24.82%, avg=150.40, stdev=41.19, samples=65 iops : min= 7, max= 59, avg=37.03, stdev=10.31, samples=65 write: IOPS=40, BW=160KiB/s (164kB/s)(5264KiB/32832msec); 0 zone resets slat (usec): min=27, max=21037, avg=282.68, stdev=1064.94 clat (msec): min=93, max=362, avg=201.27, stdev=46.81 lat (msec): min=93, max=363, avg=201.56, stdev=46.78 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 128], 10.00th=[ 142], 20.00th=[ 163], | 30.00th=[ 178], 40.00th=[ 188], 50.00th=[ 199], 60.00th=[ 209], | 70.00th=[ 224], 80.00th=[ 241], 90.00th=[ 264], 95.00th=[ 284], | 99.00th=[ 313], 99.50th=[ 347], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 71, max= 262, per=25.39%, avg=159.95, stdev=43.79, samples=65 iops : min= 17, max= 65, avg=39.46, stdev=10.95, samples=65 lat (msec) : 10=0.04%, 50=0.08%, 100=0.94%, 250=85.86%, 500=13.09% cpu : usr=0.34%, sys=1.83%, ctx=4516, 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=180447: Tue Aug 25 20:05:43 2026 read: IOPS=37, BW=152KiB/s (155kB/s)(4984KiB/32876msec) slat (usec): min=39, max=56371, avg=14400.38, stdev=8278.58 clat (msec): min=14, max=461, avg=193.53, stdev=50.75 lat (msec): min=14, max=499, avg=207.94, stdev=52.58 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 114], 10.00th=[ 130], 20.00th=[ 155], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 192], 60.00th=[ 203], | 70.00th=[ 218], 80.00th=[ 234], 90.00th=[ 259], 95.00th=[ 275], | 99.00th=[ 321], 99.50th=[ 351], 99.90th=[ 451], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 63, max= 253, per=24.94%, avg=151.11, stdev=38.77, samples=65 iops : min= 15, max= 63, avg=37.23, stdev= 9.70, samples=65 write: IOPS=39, BW=160KiB/s (164kB/s)(5256KiB/32876msec); 0 zone resets slat (usec): min=25, max=10445, avg=212.71, stdev=519.22 clat (msec): min=65, max=438, avg=202.33, stdev=48.82 lat (msec): min=65, max=438, avg=202.55, stdev=48.79 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 129], 10.00th=[ 142], 20.00th=[ 161], | 30.00th=[ 176], 40.00th=[ 188], 50.00th=[ 201], 60.00th=[ 211], | 70.00th=[ 226], 80.00th=[ 245], 90.00th=[ 266], 95.00th=[ 288], | 99.00th=[ 326], 99.50th=[ 347], 99.90th=[ 418], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 79, max= 278, per=25.24%, avg=159.00, stdev=38.49, samples=65 iops : min= 19, max= 69, avg=39.22, stdev= 9.68, samples=65 lat (msec) : 20=0.08%, 50=0.16%, 100=0.90%, 250=84.69%, 500=14.18% cpu : usr=0.33%, sys=2.10%, ctx=4389, 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=180448: Tue Aug 25 20:05:43 2026 read: IOPS=38, BW=153KiB/s (156kB/s)(5060KiB/33112msec) slat (usec): min=51, max=62545, avg=14910.15, stdev=8332.91 clat (msec): min=27, max=433, avg=193.99, stdev=49.86 lat (msec): min=42, max=443, avg=208.91, stdev=51.66 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 115], 10.00th=[ 133], 20.00th=[ 153], | 30.00th=[ 169], 40.00th=[ 180], 50.00th=[ 192], 60.00th=[ 205], | 70.00th=[ 218], 80.00th=[ 232], 90.00th=[ 259], 95.00th=[ 284], | 99.00th=[ 321], 99.50th=[ 338], 99.90th=[ 409], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 51, max= 270, per=25.12%, avg=152.20, stdev=36.55, samples=65 iops : min= 12, max= 67, avg=37.49, stdev= 9.16, samples=65 write: IOPS=39, BW=156KiB/s (160kB/s)(5180KiB/33112msec); 0 zone resets slat (usec): min=25, max=20887, avg=301.34, stdev=1130.83 clat (msec): min=42, max=446, avg=202.26, stdev=51.25 lat (msec): min=42, max=446, avg=202.56, stdev=51.27 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 125], 10.00th=[ 140], 20.00th=[ 159], | 30.00th=[ 178], 40.00th=[ 188], 50.00th=[ 199], 60.00th=[ 209], | 70.00th=[ 222], 80.00th=[ 239], 90.00th=[ 268], 95.00th=[ 292], | 99.00th=[ 372], 99.50th=[ 376], 99.90th=[ 435], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 29, max= 278, per=24.66%, avg=155.37, stdev=41.13, samples=65 iops : min= 7, max= 69, avg=38.29, stdev=10.30, samples=65 lat (msec) : 50=0.20%, 100=1.05%, 250=85.51%, 500=13.24% cpu : usr=0.36%, sys=2.14%, ctx=4599, 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=606KiB/s (621kB/s), 152KiB/s-153KiB/s (155kB/s-156kB/s), io=19.6MiB (20.5MB), run=32832-33112msec WRITE: bw=631KiB/s (646kB/s), 156KiB/s-160KiB/s (160kB/s-164kB/s), io=20.4MiB (21.4MB), run=32832-33112msec 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=180457: Tue Aug 25 20:05:52 2026 read: IOPS=1, BW=77.4MiB/s (81.1MB/s)(40.0MiB/517msec) slat (nsec): min=36537k, max=36537k, avg=36537172.00, stdev= 0.00 clat (nsec): min=459028k, max=459028k, avg=459027825.00, stdev= 0.00 lat (nsec): min=495571k, max=495571k, avg=495571105.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.52%, ctx=7, 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=77.4MiB/s (81.1MB/s), 77.4MiB/s-77.4MiB/s (81.1MB/s-81.1MB/s), io=40.0MiB (41.9MB), run=517-517msec 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