== sanity test 398c: run fio to test AIO ================= 12:08:00 (1787587680) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.619597 s, 67.7 MB/s osc.lustre-OST0000-osc-ffff951dc69c7800.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=145609: Mon Aug 24 12:10:28 2026 write: IOPS=18, BW=72.9KiB/s (74.7kB/s)(10.0MiB/140411msec); 0 zone resets slat (usec): min=21, max=19273, avg=170.16, stdev=742.01 clat (msec): min=239, max=1620, avg=876.41, stdev=237.60 lat (msec): min=239, max=1620, avg=876.59, stdev=237.59 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 443], 10.00th=[ 592], 20.00th=[ 693], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 927], | 70.00th=[ 986], 80.00th=[ 1070], 90.00th=[ 1183], 95.00th=[ 1267], | 99.00th=[ 1452], 99.50th=[ 1469], 99.90th=[ 1536], 99.95th=[ 1586], | 99.99th=[ 1620] bw ( KiB/s): min= 8, max= 255, per=25.03%, avg=72.84, stdev=29.41, samples=277 iops : min= 2, max= 63, avg=17.81, stdev= 7.32, samples=277 lat (msec) : 250=0.04%, 500=6.17%, 750=21.60%, 1000=44.14%, 2000=28.05% cpu : usr=0.04%, sys=0.23%, ctx=1681, 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=145610: Mon Aug 24 12:10:28 2026 write: IOPS=18, BW=72.0KiB/s (74.7kB/s)(10.0MiB/140353msec); 0 zone resets slat (usec): min=20, max=17369, avg=158.40, stdev=603.25 clat (msec): min=244, max=1621, avg=876.13, stdev=235.64 lat (msec): min=244, max=1621, avg=876.29, stdev=235.66 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 418], 10.00th=[ 600], 20.00th=[ 701], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 885], 60.00th=[ 927], | 70.00th=[ 986], 80.00th=[ 1062], 90.00th=[ 1167], 95.00th=[ 1250], | 99.00th=[ 1435], 99.50th=[ 1519], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 256, per=25.99%, avg=75.63, stdev=34.28, samples=267 iops : min= 1, max= 64, avg=18.51, stdev= 8.58, samples=267 lat (msec) : 250=0.62%, 500=5.78%, 750=19.84%, 1000=46.21%, 2000=27.54% cpu : usr=0.05%, sys=0.20%, ctx=1551, 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=145611: Mon Aug 24 12:10:28 2026 write: IOPS=18, BW=72.9KiB/s (74.7kB/s)(10.0MiB/140414msec); 0 zone resets slat (usec): min=20, max=13493, avg=173.01, stdev=630.14 clat (msec): min=264, max=1544, avg=876.49, stdev=238.51 lat (msec): min=264, max=1544, avg=876.66, stdev=238.52 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 430], 10.00th=[ 592], 20.00th=[ 693], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 869], 60.00th=[ 927], | 70.00th=[ 995], 80.00th=[ 1062], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1452], 99.50th=[ 1536], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 255, per=25.40%, avg=73.93, stdev=33.21, samples=273 iops : min= 1, max= 63, avg=18.08, stdev= 8.29, samples=273 lat (msec) : 500=6.99%, 750=19.69%, 1000=44.80%, 2000=28.52% cpu : usr=0.05%, sys=0.22%, ctx=1684, 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=145612: Mon Aug 24 12:10:28 2026 write: IOPS=18, BW=73.1KiB/s (74.8kB/s)(10.0MiB/140125msec); 0 zone resets slat (usec): min=21, max=18186, avg=183.97, stdev=793.63 clat (msec): min=117, max=1544, avg=875.13, stdev=239.92 lat (msec): min=117, max=1544, avg=875.32, stdev=239.92 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 405], 10.00th=[ 600], 20.00th=[ 693], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 927], | 70.00th=[ 986], 80.00th=[ 1053], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1435], 99.50th=[ 1502], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 215, per=25.11%, avg=73.08, stdev=31.00, samples=276 iops : min= 1, max= 53, avg=17.86, stdev= 7.77, samples=276 lat (msec) : 250=0.86%, 500=5.66%, 750=20.35%, 1000=45.74%, 2000=27.38% cpu : usr=0.06%, sys=0.23%, ctx=1835, 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 Run status group 0 (all jobs): WRITE: bw=292KiB/s (299kB/s), 72.9KiB/s-73.1KiB/s (74.7kB/s-74.8kB/s), io=40.0MiB (41.9MB), run=140125-140414msec 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=145642: Mon Aug 24 12:12:22 2026 read: IOPS=12, BW=48.6KiB/s (49.7kB/s)(5048KiB/103907msec) slat (usec): min=1995, max=75725, avg=14054.56, stdev=9190.84 clat (msec): min=10, max=966, avg=403.92, stdev=133.44 lat (msec): min=13, max=995, avg=417.98, stdev=135.68 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 213], 10.00th=[ 251], 20.00th=[ 296], | 30.00th=[ 334], 40.00th=[ 363], 50.00th=[ 397], 60.00th=[ 426], | 70.00th=[ 451], 80.00th=[ 498], 90.00th=[ 575], 95.00th=[ 651], | 99.00th=[ 802], 99.50th=[ 869], 99.90th=[ 961], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 135, per=25.33%, avg=48.89, stdev=24.96, samples=203 iops : min= 1, max= 33, avg=11.81, stdev= 6.27, samples=203 write: IOPS=12, BW=49.0KiB/s (51.2kB/s)(5192KiB/103907msec); 0 zone resets slat (usec): min=25, max=22128, avg=244.71, stdev=955.28 clat (msec): min=288, max=1925, avg=869.42, stdev=284.61 lat (msec): min=288, max=1925, avg=869.66, stdev=284.68 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 489], 10.00th=[ 535], 20.00th=[ 625], | 30.00th=[ 684], 40.00th=[ 751], 50.00th=[ 818], 60.00th=[ 911], | 70.00th=[ 1003], 80.00th=[ 1133], 90.00th=[ 1267], 95.00th=[ 1385], | 99.00th=[ 1620], 99.50th=[ 1703], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 110, per=24.85%, avg=49.70, stdev=21.08, samples=205 iops : min= 1, max= 27, avg=12.01, stdev= 5.32, samples=205 lat (msec) : 20=0.04%, 50=0.20%, 100=0.12%, 250=4.57%, 500=38.05% lat (msec) : 750=26.13%, 1000=15.66%, 2000=15.23% cpu : usr=0.10%, sys=0.59%, ctx=4395, 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=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=145643: Mon Aug 24 12:12:22 2026 read: IOPS=11, BW=47.9KiB/s (49.0kB/s)(4976KiB/103965msec) slat (usec): min=2712, max=63683, avg=13992.27, stdev=8651.16 clat (msec): min=12, max=959, avg=408.79, stdev=133.22 lat (msec): min=22, max=980, avg=422.78, stdev=135.32 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 220], 10.00th=[ 255], 20.00th=[ 309], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 397], 60.00th=[ 426], | 70.00th=[ 460], 80.00th=[ 498], 90.00th=[ 584], 95.00th=[ 651], | 99.00th=[ 818], 99.50th=[ 894], 99.90th=[ 944], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 111, per=24.92%, avg=48.10, stdev=23.08, samples=203 iops : min= 1, max= 27, avg=11.61, stdev= 5.81, samples=203 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5264KiB/103965msec); 0 zone resets slat (usec): min=26, max=15629, avg=247.02, stdev=876.79 clat (msec): min=295, max=1942, avg=860.66, stdev=279.26 lat (msec): min=296, max=1942, avg=860.90, stdev=279.21 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 481], 10.00th=[ 535], 20.00th=[ 609], | 30.00th=[ 684], 40.00th=[ 743], 50.00th=[ 827], 60.00th=[ 902], | 70.00th=[ 986], 80.00th=[ 1099], 90.00th=[ 1250], 95.00th=[ 1368], | 99.00th=[ 1653], 99.50th=[ 1703], 99.90th=[ 1871], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 120, per=25.62%, avg=51.25, stdev=23.61, samples=202 iops : min= 1, max= 30, avg=12.40, stdev= 5.97, samples=202 lat (msec) : 20=0.16%, 50=0.04%, 100=0.20%, 250=3.91%, 500=38.01% lat (msec) : 750=26.09%, 1000=16.88%, 2000=14.73% cpu : usr=0.09%, sys=0.62%, ctx=4181, 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=145644: Mon Aug 24 12:12:22 2026 read: IOPS=11, BW=47.9KiB/s (49.1kB/s)(4984KiB/103967msec) slat (usec): min=2383, max=81338, avg=14197.31, stdev=9023.16 clat (msec): min=6, max=957, avg=402.92, stdev=132.35 lat (msec): min=10, max=986, avg=417.12, stdev=134.68 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 205], 10.00th=[ 251], 20.00th=[ 296], | 30.00th=[ 334], 40.00th=[ 363], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 460], 80.00th=[ 498], 90.00th=[ 575], 95.00th=[ 634], | 99.00th=[ 793], 99.50th=[ 818], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 135, per=24.93%, avg=48.11, stdev=24.83, samples=204 iops : min= 1, max= 33, avg=11.61, stdev= 6.24, samples=204 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5256KiB/103967msec); 0 zone resets slat (usec): min=23, max=31270, avg=315.73, stdev=1723.66 clat (msec): min=313, max=1941, avg=865.50, stdev=285.10 lat (msec): min=313, max=1941, avg=865.82, stdev=285.21 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 472], 10.00th=[ 527], 20.00th=[ 617], | 30.00th=[ 684], 40.00th=[ 751], 50.00th=[ 818], 60.00th=[ 894], | 70.00th=[ 1003], 80.00th=[ 1116], 90.00th=[ 1267], 95.00th=[ 1385], | 99.00th=[ 1603], 99.50th=[ 1703], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 143, per=25.03%, avg=50.05, stdev=24.49, samples=205 iops : min= 1, max= 35, avg=12.10, stdev= 6.19, samples=205 lat (msec) : 10=0.08%, 20=0.04%, 50=0.08%, 100=0.31%, 250=4.22% lat (msec) : 500=38.48%, 750=25.31%, 1000=16.05%, 2000=15.43% cpu : usr=0.10%, sys=0.56%, ctx=4063, 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=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=145645: Mon Aug 24 12:12:22 2026 read: IOPS=12, BW=48.0KiB/s (50.1kB/s)(5060KiB/103329msec) slat (usec): min=63, max=437465, avg=14365.91, stdev=14907.17 clat (msec): min=11, max=1000, avg=409.52, stdev=138.76 lat (msec): min=27, max=1010, avg=423.89, stdev=140.81 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 218], 10.00th=[ 251], 20.00th=[ 300], | 30.00th=[ 338], 40.00th=[ 372], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 451], 80.00th=[ 502], 90.00th=[ 600], 95.00th=[ 659], | 99.00th=[ 810], 99.50th=[ 852], 99.90th=[ 995], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 120, per=25.24%, avg=48.72, stdev=22.86, samples=204 iops : min= 1, max= 30, avg=11.75, stdev= 5.78, samples=204 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(5180KiB/103329msec); 0 zone resets slat (usec): min=26, max=22964, avg=255.14, stdev=1214.70 clat (msec): min=298, max=1926, avg=861.27, stdev=285.30 lat (msec): min=298, max=1926, avg=861.53, stdev=285.28 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 477], 10.00th=[ 531], 20.00th=[ 617], | 30.00th=[ 676], 40.00th=[ 743], 50.00th=[ 818], 60.00th=[ 902], | 70.00th=[ 986], 80.00th=[ 1099], 90.00th=[ 1250], 95.00th=[ 1385], | 99.00th=[ 1636], 99.50th=[ 1737], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 119, per=24.93%, avg=49.86, stdev=23.04, samples=204 iops : min= 1, max= 29, avg=12.04, stdev= 5.77, samples=204 lat (msec) : 20=0.04%, 50=0.23%, 100=0.20%, 250=4.34%, 500=38.20% lat (msec) : 750=26.64%, 1000=15.78%, 2000=14.57% cpu : usr=0.10%, sys=0.66%, ctx=4444, 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=193KiB/s (198kB/s), 47.9KiB/s-48.0KiB/s (49.0kB/s-50.1kB/s), io=19.6MiB (20.5MB), run=103329-103967msec WRITE: bw=201KiB/s (206kB/s), 49.0KiB/s-50.6KiB/s (51.2kB/s-51.8kB/s), io=20.4MiB (21.4MB), run=103329-103967msec 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=145667: Mon Aug 24 12:12:33 2026 read: IOPS=1, BW=77.4MiB/s (81.1MB/s)(40.0MiB/517msec) slat (nsec): min=33725k, max=33725k, avg=33725225.00, stdev= 0.00 clat (nsec): min=458161k, max=458161k, avg=458161428.00, stdev= 0.00 lat (nsec): min=491892k, max=491892k, avg=491891808.00, 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=12, 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