== sanity test 398c: run fio to test AIO ================= 08:44:46 (1790945086) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.493652 s, 85.0 MB/s osc.lustre-OST0000-osc-ffff9d2d4c05e000.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=145885: Fri Oct 2 08:47:32 2026 write: IOPS=16, BW=66.1KiB/s (67.6kB/s)(10.0MiB/155025msec); 0 zone resets slat (usec): min=26, max=17423, avg=172.51, stdev=746.37 clat (msec): min=158, max=2152, avg=968.31, stdev=280.83 lat (msec): min=158, max=2152, avg=968.49, stdev=280.84 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 575], 10.00th=[ 667], 20.00th=[ 751], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 944], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1452], | 99.00th=[ 1905], 99.50th=[ 2022], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 230, per=25.63%, avg=67.40, stdev=28.74, samples=299 iops : min= 1, max= 57, avg=16.43, stdev= 7.21, samples=299 lat (msec) : 250=0.62%, 500=1.41%, 750=17.66%, 1000=39.10%, 2000=40.59% lat (msec) : >=2000=0.62% cpu : usr=0.04%, sys=0.19%, ctx=1592, 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=145886: Fri Oct 2 08:47:32 2026 write: IOPS=16, BW=65.0KiB/s (67.6kB/s)(10.0MiB/155175msec); 0 zone resets slat (usec): min=27, max=16506, avg=178.07, stdev=716.15 clat (msec): min=253, max=2215, avg=968.65, stdev=279.00 lat (msec): min=253, max=2215, avg=968.83, stdev=278.99 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 592], 10.00th=[ 667], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 877], 50.00th=[ 944], 60.00th=[ 995], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1452], | 99.00th=[ 1955], 99.50th=[ 2039], 99.90th=[ 2140], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 128, per=25.14%, avg=66.13, stdev=29.32, samples=305 iops : min= 1, max= 32, avg=16.11, stdev= 7.35, samples=305 lat (msec) : 500=1.60%, 750=18.55%, 1000=40.35%, 2000=38.71%, >=2000=0.78% cpu : usr=0.04%, sys=0.18%, ctx=1542, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=145887: Fri Oct 2 08:47:32 2026 write: IOPS=16, BW=66.1KiB/s (67.7kB/s)(10.0MiB/154996msec); 0 zone resets slat (usec): min=26, max=20652, avg=197.92, stdev=908.77 clat (msec): min=161, max=2128, avg=967.54, stdev=281.16 lat (msec): min=161, max=2128, avg=967.74, stdev=281.17 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 584], 10.00th=[ 667], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 995], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1318], 95.00th=[ 1435], | 99.00th=[ 1955], 99.50th=[ 2005], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 144, per=25.56%, avg=67.21, stdev=33.23, samples=300 iops : min= 1, max= 36, avg=16.38, stdev= 8.32, samples=300 lat (msec) : 250=0.43%, 500=1.80%, 750=18.05%, 1000=40.12%, 2000=39.18% lat (msec) : >=2000=0.43% cpu : usr=0.04%, sys=0.21%, ctx=2113, 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=145888: Fri Oct 2 08:47:32 2026 write: IOPS=16, BW=65.0KiB/s (67.6kB/s)(10.0MiB/155176msec); 0 zone resets slat (usec): min=27, max=17748, avg=172.78, stdev=720.92 clat (msec): min=272, max=2116, avg=968.84, stdev=278.71 lat (msec): min=272, max=2116, avg=969.02, stdev=278.72 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 575], 10.00th=[ 667], 20.00th=[ 760], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 944], 60.00th=[ 1003], | 70.00th=[ 1070], 80.00th=[ 1167], 90.00th=[ 1301], 95.00th=[ 1452], | 99.00th=[ 1955], 99.50th=[ 1989], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 128, per=25.14%, avg=66.12, stdev=30.74, samples=305 iops : min= 1, max= 32, avg=16.12, stdev= 7.73, samples=305 lat (msec) : 500=2.07%, 750=17.34%, 1000=40.66%, 2000=39.49%, >=2000=0.43% cpu : usr=0.04%, sys=0.20%, ctx=1787, 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=264KiB/s (270kB/s), 65.0KiB/s-66.1KiB/s (67.6kB/s-67.7kB/s), io=40.0MiB (41.9MB), run=154996-155176msec 5% of I/O are 1-page (PAGE_SIZE=4096), max 50% 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=145920: Fri Oct 2 08:49:34 2026 read: IOPS=11, BW=44.9KiB/s (45.0kB/s)(5048KiB/112379msec) slat (usec): min=2787, max=85991, avg=13829.30, stdev=8343.03 clat (msec): min=23, max=1355, avg=437.92, stdev=147.01 lat (msec): min=31, max=1372, avg=451.75, stdev=148.77 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 275], 10.00th=[ 305], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 384], 50.00th=[ 409], 60.00th=[ 435], | 70.00th=[ 468], 80.00th=[ 510], 90.00th=[ 609], 95.00th=[ 718], | 99.00th=[ 1028], 99.50th=[ 1083], 99.90th=[ 1318], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7, max= 112, per=25.58%, avg=45.27, stdev=21.93, samples=219 iops : min= 1, max= 28, avg=10.87, stdev= 5.54, samples=219 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(5192KiB/112379msec); 0 zone resets slat (usec): min=34, max=15207, avg=227.76, stdev=864.28 clat (msec): min=379, max=2285, avg=942.49, stdev=279.43 lat (msec): min=379, max=2285, avg=942.72, stdev=279.42 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 558], 10.00th=[ 625], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 961], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1284], 95.00th=[ 1452], | 99.00th=[ 1921], 99.50th=[ 2022], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 120, per=25.00%, avg=46.00, stdev=20.53, samples=221 iops : min= 1, max= 30, avg=11.05, stdev= 5.18, samples=221 lat (msec) : 50=0.12%, 100=0.08%, 250=0.98%, 500=38.40%, 750=19.80% lat (msec) : 1000=22.66%, 2000=17.70%, >=2000=0.27% cpu : usr=0.08%, sys=0.55%, ctx=4341, 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=145921: Fri Oct 2 08:49:34 2026 read: IOPS=10, BW=43.9KiB/s (44.0kB/s)(4976KiB/113351msec) slat (usec): min=2806, max=83767, avg=13832.23, stdev=8411.66 clat (msec): min=11, max=1331, avg=437.36, stdev=142.70 lat (msec): min=20, max=1340, avg=451.20, stdev=144.50 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 271], 10.00th=[ 296], 20.00th=[ 334], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 443], | 70.00th=[ 468], 80.00th=[ 514], 90.00th=[ 617], 95.00th=[ 726], | 99.00th=[ 927], 99.50th=[ 1045], 99.90th=[ 1116], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 120, per=24.78%, avg=43.87, stdev=22.63, samples=222 iops : min= 1, max= 30, avg=10.51, stdev= 5.71, samples=222 write: IOPS=11, BW=46.4KiB/s (47.6kB/s)(5264KiB/113351msec); 0 zone resets slat (usec): min=31, max=17486, avg=227.33, stdev=919.13 clat (msec): min=316, max=2228, avg=948.90, stdev=277.61 lat (msec): min=316, max=2228, avg=949.13, stdev=277.60 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 550], 10.00th=[ 642], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 919], 60.00th=[ 978], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1267], 95.00th=[ 1418], | 99.00th=[ 1955], 99.50th=[ 2039], 99.90th=[ 2140], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 152, per=25.08%, avg=46.16, stdev=22.85, samples=224 iops : min= 1, max= 38, avg=11.08, stdev= 5.75, samples=224 lat (msec) : 20=0.08%, 50=0.12%, 250=1.29%, 500=38.01%, 750=17.85% lat (msec) : 1000=23.75%, 2000=18.55%, >=2000=0.35% cpu : usr=0.08%, sys=0.54%, ctx=4608, 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=145922: Fri Oct 2 08:49:34 2026 read: IOPS=11, BW=44.1KiB/s (45.1kB/s)(4984KiB/113122msec) slat (usec): min=2388, max=65757, avg=14050.58, stdev=8244.58 clat (msec): min=14, max=1273, avg=432.29, stdev=142.60 lat (msec): min=32, max=1303, avg=446.34, stdev=144.49 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 275], 10.00th=[ 300], 20.00th=[ 334], | 30.00th=[ 359], 40.00th=[ 380], 50.00th=[ 405], 60.00th=[ 430], | 70.00th=[ 460], 80.00th=[ 506], 90.00th=[ 584], 95.00th=[ 709], | 99.00th=[ 1036], 99.50th=[ 1053], 99.90th=[ 1250], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 112, per=25.03%, avg=44.30, stdev=22.05, samples=221 iops : min= 1, max= 28, avg=10.62, stdev= 5.56, samples=221 write: IOPS=11, BW=46.5KiB/s (47.6kB/s)(5256KiB/113122msec); 0 zone resets slat (usec): min=35, max=24423, avg=211.47, stdev=888.59 clat (msec): min=339, max=2233, avg=951.72, stdev=284.61 lat (msec): min=340, max=2233, avg=951.94, stdev=284.65 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 567], 10.00th=[ 642], 20.00th=[ 735], | 30.00th=[ 802], 40.00th=[ 869], 50.00th=[ 919], 60.00th=[ 969], | 70.00th=[ 1036], 80.00th=[ 1133], 90.00th=[ 1284], 95.00th=[ 1502], | 99.00th=[ 1921], 99.50th=[ 2056], 99.90th=[ 2165], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 96, per=25.05%, avg=46.10, stdev=18.85, samples=223 iops : min= 1, max= 24, avg=11.07, stdev= 4.77, samples=223 lat (msec) : 20=0.04%, 100=0.12%, 250=1.29%, 500=38.52%, 750=18.52% lat (msec) : 1000=22.34%, 2000=18.83%, >=2000=0.35% cpu : usr=0.08%, sys=0.53%, ctx=4610, 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=145923: Fri Oct 2 08:49:34 2026 read: IOPS=11, BW=45.3KiB/s (46.3kB/s)(5060KiB/111814msec) slat (usec): min=36, max=76799, avg=14003.88, stdev=7973.07 clat (msec): min=17, max=1169, avg=433.92, stdev=143.11 lat (msec): min=20, max=1205, avg=447.93, stdev=144.76 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 271], 10.00th=[ 300], 20.00th=[ 334], | 30.00th=[ 359], 40.00th=[ 380], 50.00th=[ 405], 60.00th=[ 430], | 70.00th=[ 460], 80.00th=[ 510], 90.00th=[ 609], 95.00th=[ 726], | 99.00th=[ 969], 99.50th=[ 1036], 99.90th=[ 1062], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 111, per=25.77%, avg=45.61, stdev=20.70, samples=218 iops : min= 1, max= 27, avg=10.95, stdev= 5.24, samples=218 write: IOPS=11, BW=46.3KiB/s (47.4kB/s)(5180KiB/111814msec); 0 zone resets slat (usec): min=33, max=22252, avg=264.94, stdev=1070.32 clat (msec): min=159, max=2469, avg=942.57, stdev=289.98 lat (msec): min=160, max=2469, avg=942.83, stdev=289.95 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 542], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1284], 95.00th=[ 1435], | 99.00th=[ 2005], 99.50th=[ 2106], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 7, max= 104, per=25.01%, avg=46.01, stdev=21.08, samples=220 iops : min= 1, max= 26, avg=11.05, stdev= 5.29, samples=220 lat (msec) : 20=0.08%, 50=0.08%, 100=0.16%, 250=1.17%, 500=38.83% lat (msec) : 750=19.34%, 1000=22.19%, 2000=17.66%, >=2000=0.51% cpu : usr=0.09%, sys=0.54%, ctx=4617, 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=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=177KiB/s (181kB/s), 43.9KiB/s-45.3KiB/s (44.0kB/s-46.3kB/s), io=19.6MiB (20.5MB), run=111814-113351msec WRITE: bw=184KiB/s (189kB/s), 46.2KiB/s-46.5KiB/s (47.3kB/s-47.6kB/s), io=20.4MiB (21.4MB), run=111814-113351msec 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=145946: Fri Oct 2 08:49:45 2026 read: IOPS=1, BW=74.8MiB/s (78.4MB/s)(40.0MiB/535msec) slat (nsec): min=46244k, max=46244k, avg=46243743.00, stdev= 0.00 clat (nsec): min=471272k, max=471272k, avg=471272400.00, stdev= 0.00 lat (nsec): min=517521k, max=517521k, avg=517521350.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.43%, ctx=10, 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=74.8MiB/s (78.4MB/s), 74.8MiB/s-74.8MiB/s (78.4MB/s-78.4MB/s), io=40.0MiB (41.9MB), run=535-535msec 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