== sanity test 398c: run fio to test AIO ================= 05:15:41 (1787303741) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.463196 s, 90.6 MB/s osc.lustre-OST0000-osc-ffff9546e07fa000.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=144977: Fri Aug 21 05:18:32 2026 write: IOPS=15, BW=63.5KiB/s (64.0kB/s)(10.0MiB/161328msec); 0 zone resets slat (usec): min=22, max=15082, avg=187.64, stdev=733.15 clat (msec): min=227, max=1932, avg=1007.67, stdev=275.01 lat (msec): min=227, max=1932, avg=1007.86, stdev=274.98 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 609], 10.00th=[ 676], 20.00th=[ 776], | 30.00th=[ 844], 40.00th=[ 919], 50.00th=[ 978], 60.00th=[ 1053], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1385], 95.00th=[ 1502], | 99.00th=[ 1687], 99.50th=[ 1821], 99.90th=[ 1921], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 128, per=25.94%, avg=65.64, stdev=29.13, samples=307 iops : min= 1, max= 32, avg=15.96, stdev= 7.34, samples=307 lat (msec) : 250=0.62%, 500=0.86%, 750=16.05%, 1000=34.77%, 2000=47.70% cpu : usr=0.05%, sys=0.20%, ctx=1768, 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=144978: Fri Aug 21 05:18:32 2026 write: IOPS=15, BW=63.4KiB/s (64.9kB/s)(10.0MiB/161629msec); 0 zone resets slat (usec): min=21, max=13396, avg=167.34, stdev=569.20 clat (msec): min=397, max=1957, avg=1009.32, stdev=272.80 lat (msec): min=398, max=1957, avg=1009.49, stdev=272.80 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 617], 10.00th=[ 676], 20.00th=[ 785], | 30.00th=[ 852], 40.00th=[ 911], 50.00th=[ 978], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1234], 90.00th=[ 1385], 95.00th=[ 1502], | 99.00th=[ 1737], 99.50th=[ 1804], 99.90th=[ 1938], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 7, max= 128, per=26.29%, avg=66.51, stdev=32.30, samples=303 iops : min= 1, max= 32, avg=16.17, stdev= 8.15, samples=303 lat (msec) : 500=1.52%, 750=15.20%, 1000=36.33%, 2000=46.95% cpu : usr=0.06%, sys=0.19%, ctx=1747, 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=144979: Fri Aug 21 05:18:32 2026 write: IOPS=15, BW=63.4KiB/s (64.9kB/s)(10.0MiB/161626msec); 0 zone resets slat (usec): min=21, max=17208, avg=206.11, stdev=775.16 clat (msec): min=187, max=1922, avg=1008.72, stdev=274.85 lat (msec): min=188, max=1922, avg=1008.93, stdev=274.86 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 609], 10.00th=[ 684], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 911], 50.00th=[ 986], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1234], 90.00th=[ 1385], 95.00th=[ 1502], | 99.00th=[ 1737], 99.50th=[ 1854], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 176, per=25.37%, avg=64.20, stdev=28.27, samples=314 iops : min= 1, max= 44, avg=15.60, stdev= 7.11, samples=314 lat (msec) : 250=0.08%, 500=1.33%, 750=15.35%, 1000=36.37%, 2000=46.88% cpu : usr=0.05%, sys=0.22%, ctx=2119, 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=144980: Fri Aug 21 05:18:32 2026 write: IOPS=15, BW=63.3KiB/s (64.8kB/s)(10.0MiB/161711msec); 0 zone resets slat (usec): min=21, max=14833, avg=181.87, stdev=686.18 clat (msec): min=282, max=1920, avg=1009.25, stdev=271.96 lat (msec): min=282, max=1920, avg=1009.43, stdev=271.97 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 625], 10.00th=[ 684], 20.00th=[ 776], | 30.00th=[ 844], 40.00th=[ 911], 50.00th=[ 978], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1250], 90.00th=[ 1385], 95.00th=[ 1485], | 99.00th=[ 1720], 99.50th=[ 1770], 99.90th=[ 1838], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 144, per=26.39%, avg=66.77, stdev=32.71, samples=302 iops : min= 1, max= 36, avg=16.25, stdev= 8.22, samples=302 lat (msec) : 500=1.21%, 750=15.27%, 1000=36.45%, 2000=47.07% cpu : usr=0.04%, sys=0.19%, ctx=1571, 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=253KiB/s (259kB/s), 63.3KiB/s-63.5KiB/s (64.8kB/s-64.0kB/s), io=40.0MiB (41.9MB), run=161328-161711msec 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=145013: Fri Aug 21 05:20:40 2026 read: IOPS=10, BW=42.7KiB/s (43.7kB/s)(5048KiB/118347msec) slat (usec): min=53, max=67346, avg=16155.58, stdev=9804.29 clat (msec): min=23, max=1538, avg=477.49, stdev=164.28 lat (msec): min=36, max=1557, avg=493.66, stdev=166.08 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 262], 10.00th=[ 309], 20.00th=[ 355], | 30.00th=[ 397], 40.00th=[ 422], 50.00th=[ 456], 60.00th=[ 498], | 70.00th=[ 535], 80.00th=[ 575], 90.00th=[ 667], 95.00th=[ 751], | 99.00th=[ 1045], 99.50th=[ 1217], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7, max= 144, per=25.19%, avg=42.57, stdev=20.62, samples=232 iops : min= 1, max= 36, avg=10.16, stdev= 5.19, samples=232 write: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5192KiB/118347msec); 0 zone resets slat (usec): min=23, max=14014, avg=269.47, stdev=885.63 clat (msec): min=108, max=2212, avg=977.44, stdev=313.84 lat (msec): min=109, max=2213, avg=977.71, stdev=313.85 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 550], 10.00th=[ 617], 20.00th=[ 718], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 936], 60.00th=[ 1020], | 70.00th=[ 1099], 80.00th=[ 1217], 90.00th=[ 1368], 95.00th=[ 1552], | 99.00th=[ 1972], 99.50th=[ 2123], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 119, per=24.98%, avg=43.72, stdev=20.38, samples=232 iops : min= 1, max= 29, avg=10.44, stdev= 5.10, samples=232 lat (msec) : 50=0.12%, 100=0.20%, 250=1.99%, 500=29.06%, 750=27.15% lat (msec) : 1000=18.83%, 2000=22.23%, >=2000=0.43% cpu : usr=0.11%, sys=0.65%, ctx=4630, 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=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=145014: Fri Aug 21 05:20:40 2026 read: IOPS=10, BW=41.0KiB/s (43.0kB/s)(4976KiB/118497msec) slat (usec): min=3045, max=65761, avg=15504.70, stdev=8721.14 clat (msec): min=39, max=1222, avg=466.96, stdev=147.03 lat (msec): min=51, max=1242, avg=482.47, stdev=148.63 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 264], 10.00th=[ 305], 20.00th=[ 355], | 30.00th=[ 393], 40.00th=[ 418], 50.00th=[ 447], 60.00th=[ 481], | 70.00th=[ 514], 80.00th=[ 567], 90.00th=[ 659], 95.00th=[ 751], | 99.00th=[ 911], 99.50th=[ 969], 99.90th=[ 1150], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7, max= 119, per=24.97%, avg=42.19, stdev=20.91, samples=231 iops : min= 1, max= 29, avg=10.06, stdev= 5.24, samples=231 write: IOPS=11, BW=44.4KiB/s (45.5kB/s)(5264KiB/118497msec); 0 zone resets slat (usec): min=26, max=28454, avg=302.70, stdev=1189.77 clat (msec): min=267, max=2276, avg=981.55, stdev=313.15 lat (msec): min=267, max=2276, avg=981.85, stdev=313.20 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 550], 10.00th=[ 617], 20.00th=[ 718], | 30.00th=[ 802], 40.00th=[ 869], 50.00th=[ 944], 60.00th=[ 1028], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1385], 95.00th=[ 1536], | 99.00th=[ 1955], 99.50th=[ 2106], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 103, per=25.20%, avg=44.10, stdev=21.09, samples=233 iops : min= 1, max= 25, avg=10.54, stdev= 5.27, samples=233 lat (msec) : 50=0.16%, 100=0.16%, 250=1.64%, 500=31.17%, 750=25.16% lat (msec) : 1000=19.41%, 2000=21.84%, >=2000=0.47% cpu : usr=0.10%, sys=0.65%, ctx=4672, majf=0, minf=16 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=145015: Fri Aug 21 05:20:40 2026 read: IOPS=10, BW=41.0KiB/s (42.0kB/s)(4984KiB/118728msec) slat (usec): min=2234, max=74470, avg=16046.90, stdev=9204.96 clat (msec): min=18, max=1238, avg=469.50, stdev=140.03 lat (msec): min=21, max=1251, avg=485.55, stdev=141.93 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 271], 10.00th=[ 317], 20.00th=[ 359], | 30.00th=[ 393], 40.00th=[ 422], 50.00th=[ 447], 60.00th=[ 481], | 70.00th=[ 518], 80.00th=[ 575], 90.00th=[ 659], 95.00th=[ 726], | 99.00th=[ 877], 99.50th=[ 961], 99.90th=[ 1028], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 110, per=25.13%, avg=42.47, stdev=20.01, samples=230 iops : min= 1, max= 27, avg=10.13, stdev= 5.06, samples=230 write: IOPS=11, BW=44.3KiB/s (45.3kB/s)(5256KiB/118728msec); 0 zone resets slat (usec): min=25, max=23771, avg=328.43, stdev=1251.39 clat (msec): min=220, max=2211, avg=981.87, stdev=313.12 lat (msec): min=220, max=2211, avg=982.20, stdev=313.25 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 550], 10.00th=[ 617], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 869], 50.00th=[ 944], 60.00th=[ 1028], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1385], 95.00th=[ 1536], | 99.00th=[ 1972], 99.50th=[ 2056], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8, max= 111, per=25.05%, avg=43.84, stdev=19.27, samples=234 iops : min= 2, max= 27, avg=10.47, stdev= 4.82, samples=234 lat (msec) : 20=0.04%, 50=0.08%, 100=0.04%, 250=1.45%, 500=31.80% lat (msec) : 750=25.62%, 1000=18.63%, 2000=22.03%, >=2000=0.31% cpu : usr=0.09%, sys=0.63%, ctx=4173, 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=145016: Fri Aug 21 05:20:40 2026 read: IOPS=10, BW=42.7KiB/s (43.7kB/s)(5060KiB/118573msec) slat (usec): min=3096, max=88344, avg=15575.96, stdev=9353.07 clat (msec): min=33, max=1273, avg=473.00, stdev=145.03 lat (msec): min=54, max=1315, avg=488.59, stdev=146.52 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 275], 10.00th=[ 313], 20.00th=[ 359], | 30.00th=[ 397], 40.00th=[ 426], 50.00th=[ 451], 60.00th=[ 489], | 70.00th=[ 523], 80.00th=[ 575], 90.00th=[ 667], 95.00th=[ 743], | 99.00th=[ 944], 99.50th=[ 961], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 111, per=25.42%, avg=42.96, stdev=20.73, samples=231 iops : min= 1, max= 27, avg=10.25, stdev= 5.22, samples=231 write: IOPS=10, BW=43.7KiB/s (44.7kB/s)(5180KiB/118573msec); 0 zone resets slat (usec): min=25, max=24323, avg=336.56, stdev=1219.30 clat (msec): min=268, max=2231, avg=984.37, stdev=309.39 lat (msec): min=269, max=2231, avg=984.71, stdev=309.44 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 550], 10.00th=[ 625], 20.00th=[ 718], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 953], 60.00th=[ 1028], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1385], 95.00th=[ 1519], | 99.00th=[ 2005], 99.50th=[ 2106], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 103, per=24.54%, avg=42.94, stdev=20.13, samples=235 iops : min= 1, max= 25, avg=10.25, stdev= 5.02, samples=235 lat (msec) : 50=0.04%, 100=0.12%, 250=1.41%, 500=30.39%, 750=26.95% lat (msec) : 1000=18.98%, 2000=21.60%, >=2000=0.51% cpu : usr=0.11%, sys=0.58%, ctx=4453, 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=169KiB/s (173kB/s), 41.0KiB/s-42.7KiB/s (42.0kB/s-43.7kB/s), io=19.6MiB (20.5MB), run=118347-118728msec WRITE: bw=176KiB/s (180kB/s), 43.7KiB/s-44.4KiB/s (44.7kB/s-45.5kB/s), io=20.4MiB (21.4MB), run=118347-118728msec 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=145039: Fri Aug 21 05:20:52 2026 read: IOPS=1, BW=57.3MiB/s (60.1MB/s)(40.0MiB/698msec) slat (nsec): min=50349k, max=50349k, avg=50348552.00, stdev= 0.00 clat (nsec): min=619913k, max=619913k, avg=619913293.00, stdev= 0.00 lat (nsec): min=670268k, max=670268k, avg=670268262.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=0.43%, ctx=7, majf=0, minf=7 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=57.3MiB/s (60.1MB/s), 57.3MiB/s-57.3MiB/s (60.1MB/s-60.1MB/s), io=40.0MiB (41.9MB), run=698-698msec 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