== sanity test 398c: run fio to test AIO ================= 12:09:19 (1779206959) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.407732 s, 103 MB/s osc.lustre-OST0000-osc-ffff959a0a554000.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=145894: Tue May 19 12:12:07 2026 write: IOPS=16, BW=64.8KiB/s (66.4kB/s)(10.0MiB/157930msec); 0 zone resets slat (usec): min=36, max=17066, avg=240.61, stdev=793.99 clat (msec): min=176, max=2543, avg=985.54, stdev=260.61 lat (msec): min=176, max=2544, avg=985.79, stdev=260.66 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 567], 10.00th=[ 718], 20.00th=[ 810], | 30.00th=[ 869], 40.00th=[ 919], 50.00th=[ 969], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1418], | 99.00th=[ 1703], 99.50th=[ 1888], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 7, max= 255, per=25.01%, avg=64.77, stdev=29.10, samples=311 iops : min= 1, max= 63, avg=15.74, stdev= 7.31, samples=311 lat (msec) : 250=0.62%, 500=3.28%, 750=8.63%, 1000=43.59%, 2000=43.44% lat (msec) : >=2000=0.43% cpu : usr=0.04%, sys=0.25%, ctx=1677, 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=145895: Tue May 19 12:12:07 2026 write: IOPS=16, BW=64.8KiB/s (66.3kB/s)(10.0MiB/158078msec); 0 zone resets slat (usec): min=38, max=19158, avg=233.15, stdev=819.99 clat (msec): min=183, max=2026, avg=986.95, stdev=251.38 lat (msec): min=183, max=2027, avg=987.19, stdev=251.38 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 584], 10.00th=[ 726], 20.00th=[ 818], | 30.00th=[ 869], 40.00th=[ 919], 50.00th=[ 969], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1167], 90.00th=[ 1318], 95.00th=[ 1435], | 99.00th=[ 1670], 99.50th=[ 1787], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 2022] bw ( KiB/s): min= 8, max= 255, per=25.01%, avg=64.77, stdev=28.71, samples=311 iops : min= 2, max= 63, avg=15.73, stdev= 7.23, samples=311 lat (msec) : 250=0.62%, 500=3.01%, 750=7.81%, 1000=43.83%, 2000=44.69% lat (msec) : >=2000=0.04% cpu : usr=0.04%, sys=0.26%, ctx=1828, 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=145896: Tue May 19 12:12:07 2026 write: IOPS=16, BW=64.9KiB/s (66.4kB/s)(10.0MiB/157851msec); 0 zone resets slat (usec): min=37, max=13019, avg=247.50, stdev=750.20 clat (msec): min=102, max=2778, avg=985.61, stdev=264.73 lat (msec): min=102, max=2778, avg=985.86, stdev=264.70 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 575], 10.00th=[ 718], 20.00th=[ 810], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 969], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1167], 90.00th=[ 1318], 95.00th=[ 1418], | 99.00th=[ 1687], 99.50th=[ 1838], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2769] bw ( KiB/s): min= 7, max= 180, per=25.16%, avg=65.16, stdev=28.60, samples=309 iops : min= 1, max= 45, avg=15.84, stdev= 7.18, samples=309 lat (msec) : 250=0.62%, 500=3.09%, 750=9.10%, 1000=43.40%, 2000=43.44% lat (msec) : >=2000=0.35% cpu : usr=0.05%, sys=0.25%, ctx=1974, 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=145897: Tue May 19 12:12:07 2026 write: IOPS=16, BW=64.9KiB/s (66.4kB/s)(10.0MiB/157833msec); 0 zone resets slat (usec): min=38, max=17426, avg=224.73, stdev=705.94 clat (msec): min=169, max=2657, avg=984.97, stdev=268.23 lat (msec): min=169, max=2657, avg=985.19, stdev=268.23 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 575], 10.00th=[ 718], 20.00th=[ 810], | 30.00th=[ 869], 40.00th=[ 919], 50.00th=[ 969], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1418], | 99.00th=[ 1703], 99.50th=[ 2232], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7, max= 185, per=24.92%, avg=64.54, stdev=28.15, samples=312 iops : min= 1, max= 46, avg=15.68, stdev= 7.05, samples=312 lat (msec) : 250=1.09%, 500=2.50%, 750=9.61%, 1000=43.91%, 2000=42.34% lat (msec) : >=2000=0.55% cpu : usr=0.05%, sys=0.26%, ctx=2028, 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=259KiB/s (265kB/s), 64.8KiB/s-64.9KiB/s (66.3kB/s-66.4kB/s), io=40.0MiB (41.9MB), run=157833-158078msec 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=145930: Tue May 19 12:14:14 2026 read: IOPS=10, BW=43.4KiB/s (44.5kB/s)(5048KiB/116277msec) slat (usec): min=59, max=72263, avg=15760.90, stdev=9402.00 clat (msec): min=22, max=1313, avg=450.86, stdev=122.81 lat (msec): min=27, max=1341, avg=466.63, stdev=124.39 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 296], 10.00th=[ 321], 20.00th=[ 359], | 30.00th=[ 388], 40.00th=[ 409], 50.00th=[ 435], 60.00th=[ 464], | 70.00th=[ 498], 80.00th=[ 535], 90.00th=[ 609], 95.00th=[ 651], | 99.00th=[ 793], 99.50th=[ 927], 99.90th=[ 1234], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 120, per=25.11%, avg=43.18, stdev=20.27, samples=228 iops : min= 1, max= 30, avg=10.31, stdev= 5.07, samples=228 write: IOPS=11, BW=44.7KiB/s (45.7kB/s)(5192KiB/116277msec); 0 zone resets slat (usec): min=46, max=12695, avg=285.13, stdev=763.98 clat (msec): min=165, max=2030, avg=978.31, stdev=292.35 lat (msec): min=165, max=2030, avg=978.60, stdev=292.38 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 531], 10.00th=[ 617], 20.00th=[ 743], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 944], 60.00th=[ 1028], | 70.00th=[ 1099], 80.00th=[ 1217], 90.00th=[ 1368], 95.00th=[ 1519], | 99.00th=[ 1754], 99.50th=[ 1821], 99.90th=[ 1972], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 112, per=24.88%, avg=44.54, stdev=19.63, samples=228 iops : min= 1, max= 28, avg=10.64, stdev= 4.97, samples=228 lat (msec) : 50=0.20%, 100=0.12%, 250=0.90%, 500=35.35%, 750=22.42% lat (msec) : 1000=19.02%, 2000=21.95%, >=2000=0.04% cpu : usr=0.11%, sys=0.64%, ctx=4360, 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=145931: Tue May 19 12:14:14 2026 read: IOPS=10, BW=42.8KiB/s (43.8kB/s)(4976KiB/116374msec) slat (usec): min=2556, max=55543, avg=15729.47, stdev=8708.50 clat (msec): min=15, max=846, avg=447.35, stdev=113.75 lat (msec): min=18, max=861, avg=463.09, stdev=114.95 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 300], 10.00th=[ 326], 20.00th=[ 359], | 30.00th=[ 388], 40.00th=[ 409], 50.00th=[ 439], 60.00th=[ 468], | 70.00th=[ 493], 80.00th=[ 535], 90.00th=[ 600], 95.00th=[ 659], | 99.00th=[ 751], 99.50th=[ 776], 99.90th=[ 818], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 119, per=24.58%, avg=42.27, stdev=20.46, samples=230 iops : min= 1, max= 29, avg=10.08, stdev= 5.14, samples=230 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5264KiB/116374msec); 0 zone resets slat (usec): min=40, max=5504, avg=266.12, stdev=473.00 clat (msec): min=195, max=1987, avg=974.25, stdev=295.14 lat (msec): min=196, max=1987, avg=974.52, stdev=295.14 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 527], 10.00th=[ 609], 20.00th=[ 735], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 936], 60.00th=[ 1020], | 70.00th=[ 1099], 80.00th=[ 1200], 90.00th=[ 1351], 95.00th=[ 1536], | 99.00th=[ 1754], 99.50th=[ 1854], 99.90th=[ 1972], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 119, per=24.96%, avg=44.69, stdev=21.98, samples=230 iops : min= 1, max= 29, avg=10.69, stdev= 5.52, samples=230 lat (msec) : 20=0.04%, 50=0.16%, 100=0.27%, 250=0.74%, 500=35.12% lat (msec) : 750=22.89%, 1000=19.10%, 2000=21.68% cpu : usr=0.09%, sys=0.61%, ctx=4409, 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=145932: Tue May 19 12:14:14 2026 read: IOPS=10, BW=42.8KiB/s (43.9kB/s)(4984KiB/116380msec) slat (usec): min=2999, max=72136, avg=15505.29, stdev=9016.60 clat (msec): min=23, max=990, avg=446.94, stdev=110.40 lat (msec): min=34, max=1023, avg=462.45, stdev=111.79 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 292], 10.00th=[ 326], 20.00th=[ 363], | 30.00th=[ 388], 40.00th=[ 414], 50.00th=[ 435], 60.00th=[ 464], | 70.00th=[ 489], 80.00th=[ 531], 90.00th=[ 592], 95.00th=[ 642], | 99.00th=[ 735], 99.50th=[ 768], 99.90th=[ 877], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 104, per=25.07%, avg=43.12, stdev=20.21, samples=227 iops : min= 1, max= 26, avg=10.29, stdev= 5.10, samples=227 write: IOPS=11, BW=45.2KiB/s (46.2kB/s)(5256KiB/116380msec); 0 zone resets slat (usec): min=43, max=18754, avg=288.42, stdev=764.31 clat (msec): min=373, max=1986, avg=974.55, stdev=287.55 lat (msec): min=373, max=1986, avg=974.84, stdev=287.59 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 542], 10.00th=[ 625], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 1020], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1485], | 99.00th=[ 1703], 99.50th=[ 1838], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 103, per=25.10%, avg=44.93, stdev=20.17, samples=228 iops : min= 1, max= 25, avg=10.75, stdev= 5.06, samples=228 lat (msec) : 50=0.04%, 100=0.23%, 250=0.70%, 500=35.55%, 750=22.58% lat (msec) : 1000=19.18%, 2000=21.72% cpu : usr=0.09%, sys=0.60%, ctx=4330, 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=145933: Tue May 19 12:14:14 2026 read: IOPS=10, BW=43.5KiB/s (44.5kB/s)(5060KiB/116374msec) slat (usec): min=2861, max=85767, avg=15424.67, stdev=8600.06 clat (msec): min=15, max=1095, avg=448.74, stdev=120.87 lat (msec): min=22, max=1121, avg=464.17, stdev=122.00 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 288], 10.00th=[ 321], 20.00th=[ 355], | 30.00th=[ 384], 40.00th=[ 409], 50.00th=[ 439], 60.00th=[ 468], | 70.00th=[ 498], 80.00th=[ 535], 90.00th=[ 609], 95.00th=[ 659], | 99.00th=[ 768], 99.50th=[ 902], 99.90th=[ 1083], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 104, per=25.57%, avg=43.98, stdev=19.62, samples=225 iops : min= 1, max= 26, avg=10.50, stdev= 4.96, samples=225 write: IOPS=11, BW=44.5KiB/s (45.6kB/s)(5180KiB/116374msec); 0 zone resets slat (usec): min=45, max=10015, avg=271.64, stdev=638.50 clat (msec): min=395, max=2052, avg=980.18, stdev=292.74 lat (msec): min=395, max=2052, avg=980.45, stdev=292.78 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 542], 10.00th=[ 609], 20.00th=[ 743], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 936], 60.00th=[ 1011], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1368], 95.00th=[ 1536], | 99.00th=[ 1821], 99.50th=[ 1888], 99.90th=[ 2005], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 104, per=24.86%, avg=44.49, stdev=19.33, samples=228 iops : min= 1, max= 26, avg=10.64, stdev= 4.88, samples=228 lat (msec) : 20=0.04%, 50=0.12%, 100=0.16%, 250=0.90%, 500=35.62% lat (msec) : 750=22.50%, 1000=19.45%, 2000=21.05%, >=2000=0.16% cpu : usr=0.09%, sys=0.63%, ctx=4458, 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=172KiB/s (177kB/s), 42.8KiB/s-43.5KiB/s (43.8kB/s-44.5kB/s), io=19.6MiB (20.5MB), run=116277-116380msec WRITE: bw=180KiB/s (184kB/s), 44.5KiB/s-45.2KiB/s (45.6kB/s-46.3kB/s), io=20.4MiB (21.4MB), run=116277-116380msec 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=145954: Tue May 19 12:14:24 2026 read: IOPS=2, BW=88.7MiB/s (93.0MB/s)(40.0MiB/451msec) slat (nsec): min=29971k, max=29971k, avg=29970800.00, stdev= 0.00 clat (nsec): min=395545k, max=395545k, avg=395545294.00, stdev= 0.00 lat (nsec): min=425520k, max=425520k, avg=425520294.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] lat (msec) : 500=100.00% cpu : usr=0.22%, sys=3.33%, ctx=32, 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=88.7MiB/s (93.0MB/s), 88.7MiB/s-88.7MiB/s (93.0MB/s-93.0MB/s), io=40.0MiB (41.9MB), run=451-451msec 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