== sanity test 398c: run fio to test AIO ================= 03:11:11 (1787037071) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.597573 s, 70.2 MB/s osc.lustre-OST0000-osc-ffff9a0b4659e000.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=145333: Tue Aug 18 03:13:50 2026 write: IOPS=17, BW=68.0KiB/s (70.6kB/s)(10.0MiB/148469msec); 0 zone resets slat (usec): min=35, max=20821, avg=285.25, stdev=911.22 clat (msec): min=215, max=1824, avg=926.75, stdev=228.37 lat (msec): min=215, max=1824, avg=927.04, stdev=228.40 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 567], 10.00th=[ 667], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 978], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1200], 95.00th=[ 1301], | 99.00th=[ 1536], 99.50th=[ 1636], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1821] bw ( KiB/s): min= 8, max= 189, per=25.36%, avg=69.73, stdev=30.61, samples=289 iops : min= 2, max= 47, avg=17.00, stdev= 7.70, samples=289 lat (msec) : 250=1.09%, 500=1.88%, 750=16.41%, 1000=44.61%, 2000=36.02% cpu : usr=0.06%, sys=0.29%, ctx=2041, 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=145334: Tue Aug 18 03:13:50 2026 write: IOPS=17, BW=69.0KiB/s (70.7kB/s)(10.0MiB/148313msec); 0 zone resets slat (usec): min=37, max=16558, avg=284.33, stdev=812.96 clat (msec): min=225, max=1785, avg=925.73, stdev=235.41 lat (msec): min=225, max=1785, avg=926.02, stdev=235.45 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 575], 10.00th=[ 642], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 978], | 70.00th=[ 1045], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1301], | 99.00th=[ 1552], 99.50th=[ 1653], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 255, per=25.70%, avg=70.67, stdev=32.78, samples=285 iops : min= 1, max= 63, avg=17.23, stdev= 8.23, samples=285 lat (msec) : 250=1.25%, 500=1.48%, 750=17.93%, 1000=41.99%, 2000=37.34% cpu : usr=0.04%, sys=0.30%, ctx=1947, 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=145335: Tue Aug 18 03:13:50 2026 write: IOPS=17, BW=69.2KiB/s (70.9kB/s)(10.0MiB/147970msec); 0 zone resets slat (usec): min=38, max=15906, avg=263.33, stdev=696.55 clat (msec): min=127, max=1781, avg=923.93, stdev=235.49 lat (msec): min=128, max=1781, avg=924.20, stdev=235.50 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1045], 80.00th=[ 1099], 90.00th=[ 1217], 95.00th=[ 1318], | 99.00th=[ 1536], 99.50th=[ 1586], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1787] bw ( KiB/s): min= 8, max= 211, per=25.17%, avg=69.21, stdev=28.74, samples=291 iops : min= 2, max= 52, avg=16.87, stdev= 7.18, samples=291 lat (msec) : 250=0.82%, 500=1.99%, 750=17.93%, 1000=42.11%, 2000=37.15% cpu : usr=0.06%, sys=0.29%, ctx=2276, 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=145336: Tue Aug 18 03:13:50 2026 write: IOPS=17, BW=68.0KiB/s (70.6kB/s)(10.0MiB/148431msec); 0 zone resets slat (usec): min=36, max=16495, avg=315.54, stdev=976.02 clat (msec): min=213, max=1785, avg=926.47, stdev=227.92 lat (msec): min=213, max=1785, avg=926.78, stdev=227.97 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 575], 10.00th=[ 642], 20.00th=[ 760], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 969], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1301], | 99.00th=[ 1519], 99.50th=[ 1636], 99.90th=[ 1754], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 128, per=25.44%, avg=69.97, stdev=30.63, samples=288 iops : min= 1, max= 32, avg=17.05, stdev= 7.67, samples=288 lat (msec) : 250=0.62%, 500=2.11%, 750=15.62%, 1000=46.72%, 2000=34.92% cpu : usr=0.04%, sys=0.30%, ctx=2128, 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=276KiB/s (283kB/s), 68.0KiB/s-69.2KiB/s (70.6kB/s-70.9kB/s), io=40.0MiB (41.9MB), run=147970-148469msec 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=145368: Tue Aug 18 03:15:45 2026 read: IOPS=11, BW=47.3KiB/s (48.4kB/s)(5048KiB/106786msec) slat (usec): min=2562, max=54268, avg=13851.90, stdev=7941.87 clat (msec): min=23, max=1084, avg=420.03, stdev=138.78 lat (msec): min=29, max=1089, avg=433.89, stdev=140.61 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 232], 10.00th=[ 268], 20.00th=[ 313], | 30.00th=[ 347], 40.00th=[ 372], 50.00th=[ 397], 60.00th=[ 430], | 70.00th=[ 468], 80.00th=[ 514], 90.00th=[ 600], 95.00th=[ 693], | 99.00th=[ 844], 99.50th=[ 894], 99.90th=[ 995], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 143, per=24.95%, avg=46.66, stdev=23.60, samples=212 iops : min= 1, max= 35, avg=11.20, stdev= 5.93, samples=212 write: IOPS=12, BW=48.6KiB/s (49.8kB/s)(5192KiB/106786msec); 0 zone resets slat (usec): min=37, max=19200, avg=392.78, stdev=1214.30 clat (msec): min=338, max=2598, avg=891.89, stdev=335.49 lat (msec): min=339, max=2598, avg=892.29, stdev=335.47 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 456], 10.00th=[ 527], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 776], 50.00th=[ 860], 60.00th=[ 927], | 70.00th=[ 1011], 80.00th=[ 1116], 90.00th=[ 1250], 95.00th=[ 1452], | 99.00th=[ 2232], 99.50th=[ 2500], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 116, per=24.87%, avg=48.25, stdev=22.13, samples=211 iops : min= 1, max= 29, avg=11.60, stdev= 5.59, samples=211 lat (msec) : 50=0.12%, 100=0.16%, 250=3.40%, 500=39.22%, 750=23.91% lat (msec) : 1000=17.19%, 2000=15.39%, >=2000=0.62% cpu : usr=0.08%, sys=0.68%, ctx=4868, 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=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=145369: Tue Aug 18 03:15:45 2026 read: IOPS=11, BW=46.5KiB/s (47.6kB/s)(4976KiB/107075msec) slat (usec): min=90, max=76627, avg=13832.92, stdev=8018.55 clat (msec): min=7, max=1101, avg=422.85, stdev=140.08 lat (msec): min=10, max=1108, avg=436.69, stdev=142.01 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 236], 10.00th=[ 271], 20.00th=[ 313], | 30.00th=[ 347], 40.00th=[ 376], 50.00th=[ 405], 60.00th=[ 435], | 70.00th=[ 472], 80.00th=[ 523], 90.00th=[ 600], 95.00th=[ 676], | 99.00th=[ 860], 99.50th=[ 911], 99.90th=[ 1011], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 128, per=24.90%, avg=46.56, stdev=22.73, samples=209 iops : min= 1, max= 32, avg=11.19, stdev= 5.71, samples=209 write: IOPS=12, BW=49.2KiB/s (50.3kB/s)(5264KiB/107075msec); 0 zone resets slat (usec): min=52, max=14610, avg=359.91, stdev=925.03 clat (msec): min=100, max=2588, avg=887.91, stdev=341.26 lat (msec): min=103, max=2592, avg=888.27, stdev=341.25 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 430], 10.00th=[ 527], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 768], 50.00th=[ 860], 60.00th=[ 927], | 70.00th=[ 995], 80.00th=[ 1099], 90.00th=[ 1250], 95.00th=[ 1552], | 99.00th=[ 2123], 99.50th=[ 2333], 99.90th=[ 2534], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 143, per=25.35%, avg=49.18, stdev=22.81, samples=210 iops : min= 1, max= 35, avg=11.83, stdev= 5.73, samples=210 lat (msec) : 10=0.04%, 20=0.12%, 50=0.16%, 100=0.04%, 250=3.16% lat (msec) : 500=37.70%, 750=25.70%, 1000=18.24%, 2000=14.14%, >=2000=0.70% cpu : usr=0.12%, sys=0.73%, ctx=4876, 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=145370: Tue Aug 18 03:15:45 2026 read: IOPS=11, BW=46.5KiB/s (47.6kB/s)(4984KiB/107170msec) slat (usec): min=2420, max=71446, avg=14007.45, stdev=8167.98 clat (msec): min=5, max=1100, avg=416.92, stdev=138.33 lat (msec): min=10, max=1109, avg=430.93, stdev=140.16 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 236], 10.00th=[ 266], 20.00th=[ 309], | 30.00th=[ 342], 40.00th=[ 372], 50.00th=[ 397], 60.00th=[ 426], | 70.00th=[ 464], 80.00th=[ 514], 90.00th=[ 600], 95.00th=[ 667], | 99.00th=[ 894], 99.50th=[ 919], 99.90th=[ 944], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 112, per=24.99%, avg=46.72, stdev=24.83, samples=210 iops : min= 1, max= 28, avg=11.22, stdev= 6.25, samples=210 write: IOPS=12, BW=49.0KiB/s (50.2kB/s)(5256KiB/107170msec); 0 zone resets slat (usec): min=47, max=21306, avg=337.87, stdev=1019.17 clat (msec): min=269, max=2620, avg=894.49, stdev=327.54 lat (msec): min=269, max=2621, avg=894.83, stdev=327.54 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 447], 10.00th=[ 535], 20.00th=[ 625], | 30.00th=[ 709], 40.00th=[ 793], 50.00th=[ 869], 60.00th=[ 936], | 70.00th=[ 1011], 80.00th=[ 1116], 90.00th=[ 1267], 95.00th=[ 1469], | 99.00th=[ 2072], 99.50th=[ 2299], 99.90th=[ 2534], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 7, max= 120, per=24.93%, avg=48.36, stdev=21.94, samples=212 iops : min= 1, max= 30, avg=11.63, stdev= 5.50, samples=212 lat (msec) : 10=0.04%, 50=0.08%, 100=0.08%, 250=3.55%, 500=37.54% lat (msec) : 750=24.84%, 1000=17.34%, 2000=15.94%, >=2000=0.59% cpu : usr=0.09%, sys=0.62%, ctx=4389, 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=145371: Tue Aug 18 03:15:45 2026 read: IOPS=11, BW=47.3KiB/s (48.4kB/s)(5060KiB/106991msec) slat (usec): min=2710, max=65704, avg=13908.81, stdev=8268.86 clat (msec): min=41, max=1039, avg=424.43, stdev=140.66 lat (msec): min=55, max=1056, avg=438.36, stdev=142.52 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 243], 10.00th=[ 271], 20.00th=[ 313], | 30.00th=[ 347], 40.00th=[ 372], 50.00th=[ 405], 60.00th=[ 435], | 70.00th=[ 468], 80.00th=[ 523], 90.00th=[ 617], 95.00th=[ 709], | 99.00th=[ 877], 99.50th=[ 919], 99.90th=[ 1011], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 104, per=25.53%, avg=47.75, stdev=22.03, samples=208 iops : min= 1, max= 26, avg=11.48, stdev= 5.53, samples=208 write: IOPS=12, BW=48.4KiB/s (49.6kB/s)(5180KiB/106991msec); 0 zone resets slat (usec): min=38, max=32622, avg=400.56, stdev=1450.46 clat (msec): min=299, max=2620, avg=891.33, stdev=337.73 lat (msec): min=299, max=2621, avg=891.73, stdev=337.72 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 451], 10.00th=[ 531], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 760], 50.00th=[ 860], 60.00th=[ 936], | 70.00th=[ 1011], 80.00th=[ 1099], 90.00th=[ 1267], 95.00th=[ 1469], | 99.00th=[ 2123], 99.50th=[ 2400], 99.90th=[ 2534], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 7, max= 103, per=24.78%, avg=48.07, stdev=22.28, samples=211 iops : min= 1, max= 25, avg=11.56, stdev= 5.59, samples=211 lat (msec) : 50=0.12%, 100=0.12%, 250=2.85%, 500=38.55%, 750=25.86% lat (msec) : 1000=16.91%, 2000=14.88%, >=2000=0.70% cpu : usr=0.11%, sys=0.72%, ctx=4743, 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=187KiB/s (192kB/s), 46.5KiB/s-47.3KiB/s (47.6kB/s-48.4kB/s), io=19.6MiB (20.5MB), run=106786-107170msec WRITE: bw=195KiB/s (200kB/s), 48.4KiB/s-49.2KiB/s (49.6kB/s-50.3kB/s), io=20.4MiB (21.4MB), run=106786-107170msec 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=145391: Tue Aug 18 03:15:54 2026 read: IOPS=2, BW=93.9MiB/s (98.5MB/s)(40.0MiB/426msec) slat (nsec): min=37679k, max=37679k, avg=37678656.00, stdev= 0.00 clat (nsec): min=367269k, max=367269k, avg=367268975.00, stdev= 0.00 lat (nsec): min=404952k, max=404952k, avg=404951815.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] lat (msec) : 500=100.00% cpu : usr=0.24%, sys=3.29%, ctx=43, 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=93.9MiB/s (98.5MB/s), 93.9MiB/s-93.9MiB/s (98.5MB/s-98.5MB/s), io=40.0MiB (41.9MB), run=426-426msec 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