== sanity test 398c: run fio to test AIO ================= 13:01:29 (1787850089) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.384359 s, 109 MB/s osc.lustre-OST0000-osc-ffff9bead2bcd000.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=181198: Thu Aug 27 13:02:03 2026 write: IOPS=105, BW=422KiB/s (432kB/s)(10.0MiB/24274msec); 0 zone resets slat (usec): min=28, max=10492, avg=139.47, stdev=451.86 clat (msec): min=32, max=244, avg=151.10, stdev=30.94 lat (msec): min=33, max=244, avg=151.24, stdev=30.94 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 105], 10.00th=[ 114], 20.00th=[ 126], | 30.00th=[ 133], 40.00th=[ 144], 50.00th=[ 153], 60.00th=[ 159], | 70.00th=[ 167], 80.00th=[ 174], 90.00th=[ 190], 95.00th=[ 203], | 99.00th=[ 232], 99.50th=[ 232], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 254, max= 768, per=24.90%, avg=419.98, stdev=85.42, samples=48 iops : min= 63, max= 192, avg=104.65, stdev=21.44, samples=48 lat (msec) : 50=0.04%, 100=4.06%, 250=95.90% cpu : usr=0.12%, sys=0.75%, ctx=1170, 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=181199: Thu Aug 27 13:02:03 2026 write: IOPS=105, BW=423KiB/s (433kB/s)(10.0MiB/24228msec); 0 zone resets slat (usec): min=27, max=13291, avg=138.55, stdev=484.02 clat (msec): min=9, max=297, avg=151.15, stdev=32.13 lat (msec): min=10, max=297, avg=151.29, stdev=32.14 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 97], 10.00th=[ 115], 20.00th=[ 126], | 30.00th=[ 136], 40.00th=[ 142], 50.00th=[ 150], 60.00th=[ 157], | 70.00th=[ 163], 80.00th=[ 180], 90.00th=[ 194], 95.00th=[ 205], | 99.00th=[ 224], 99.50th=[ 251], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 270, max= 768, per=25.02%, avg=422.02, stdev=83.96, samples=48 iops : min= 67, max= 192, avg=105.17, stdev=21.06, samples=48 lat (msec) : 10=0.04%, 50=0.08%, 100=5.62%, 250=93.79%, 500=0.47% cpu : usr=0.20%, sys=0.79%, ctx=1483, 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=181200: Thu Aug 27 13:02:03 2026 write: IOPS=106, BW=425KiB/s (435kB/s)(10.0MiB/24105msec); 0 zone resets slat (usec): min=29, max=9617, avg=182.10, stdev=599.43 clat (msec): min=11, max=258, avg=150.08, stdev=31.52 lat (msec): min=11, max=264, avg=150.27, stdev=31.52 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 102], 10.00th=[ 113], 20.00th=[ 127], | 30.00th=[ 136], 40.00th=[ 142], 50.00th=[ 148], 60.00th=[ 159], | 70.00th=[ 165], 80.00th=[ 176], 90.00th=[ 188], 95.00th=[ 203], | 99.00th=[ 232], 99.50th=[ 243], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 294, max= 704, per=25.06%, avg=422.77, stdev=69.23, samples=47 iops : min= 73, max= 176, avg=105.34, stdev=17.37, samples=47 lat (msec) : 20=0.04%, 50=0.51%, 100=4.34%, 250=94.92%, 500=0.20% cpu : usr=0.24%, sys=1.12%, ctx=2600, 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=181201: Thu Aug 27 13:02:03 2026 write: IOPS=105, BW=423KiB/s (433kB/s)(10.0MiB/24227msec); 0 zone resets slat (usec): min=30, max=11736, avg=199.05, stdev=663.48 clat (msec): min=28, max=269, avg=150.61, stdev=31.98 lat (msec): min=28, max=269, avg=150.81, stdev=32.00 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 103], 10.00th=[ 114], 20.00th=[ 126], | 30.00th=[ 134], 40.00th=[ 142], 50.00th=[ 150], 60.00th=[ 159], | 70.00th=[ 165], 80.00th=[ 174], 90.00th=[ 190], 95.00th=[ 205], | 99.00th=[ 236], 99.50th=[ 243], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 271] bw ( KiB/s): min= 295, max= 648, per=24.96%, avg=421.12, stdev=68.29, samples=48 iops : min= 73, max= 162, avg=104.94, stdev=17.14, samples=48 lat (msec) : 50=0.16%, 100=4.41%, 250=95.16%, 500=0.27% cpu : usr=0.19%, sys=1.02%, ctx=3006, 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=1687KiB/s (1728kB/s), 422KiB/s-425KiB/s (432kB/s-435kB/s), io=40.0MiB (41.9MB), run=24105-24274msec 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=181216: Thu Aug 27 13:02:41 2026 read: IOPS=41, BW=167KiB/s (172kB/s)(5048KiB/30140msec) slat (usec): min=32, max=58885, avg=13214.83, stdev=7960.83 clat (msec): min=27, max=372, avg=177.17, stdev=50.37 lat (msec): min=38, max=382, avg=190.39, stdev=52.55 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 110], 10.00th=[ 121], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 157], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 197], 80.00th=[ 215], 90.00th=[ 247], 95.00th=[ 275], | 99.00th=[ 321], 99.50th=[ 338], 99.90th=[ 355], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 66, max= 294, per=25.07%, avg=166.75, stdev=44.66, samples=59 iops : min= 16, max= 73, avg=41.19, stdev=11.16, samples=59 write: IOPS=43, BW=172KiB/s (176kB/s)(5192KiB/30140msec); 0 zone resets slat (usec): min=31, max=13151, avg=182.99, stdev=580.82 clat (msec): min=56, max=416, avg=183.08, stdev=48.58 lat (msec): min=57, max=416, avg=183.26, stdev=48.58 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 118], 10.00th=[ 131], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 220], 90.00th=[ 247], 95.00th=[ 275], | 99.00th=[ 326], 99.50th=[ 376], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 46, max= 263, per=24.87%, avg=172.34, stdev=44.33, samples=59 iops : min= 11, max= 65, avg=42.59, stdev=11.12, samples=59 lat (msec) : 50=0.08%, 100=1.52%, 250=89.26%, 500=9.14% cpu : usr=0.21%, sys=1.47%, ctx=4177, 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=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=181217: Thu Aug 27 13:02:41 2026 read: IOPS=41, BW=166KiB/s (170kB/s)(4976KiB/30038msec) slat (usec): min=37, max=56832, avg=13036.79, stdev=7691.26 clat (msec): min=28, max=376, avg=176.04, stdev=48.45 lat (msec): min=39, max=433, avg=189.09, stdev=51.01 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 111], 10.00th=[ 121], 20.00th=[ 134], | 30.00th=[ 146], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 197], 80.00th=[ 215], 90.00th=[ 245], 95.00th=[ 271], | 99.00th=[ 305], 99.50th=[ 326], 99.90th=[ 359], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 33, max= 270, per=24.89%, avg=165.54, stdev=42.29, samples=59 iops : min= 8, max= 67, avg=40.90, stdev=10.53, samples=59 write: IOPS=43, BW=175KiB/s (179kB/s)(5264KiB/30038msec); 0 zone resets slat (usec): min=31, max=14555, avg=173.72, stdev=559.12 clat (msec): min=91, max=476, avg=183.11, stdev=49.03 lat (msec): min=91, max=476, avg=183.29, stdev=49.07 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 117], 10.00th=[ 128], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 186], | 70.00th=[ 199], 80.00th=[ 218], 90.00th=[ 251], 95.00th=[ 275], | 99.00th=[ 326], 99.50th=[ 347], 99.90th=[ 460], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 80, max= 294, per=25.38%, avg=175.88, stdev=45.15, samples=59 iops : min= 20, max= 73, avg=43.49, stdev=11.30, samples=59 lat (msec) : 50=0.08%, 100=1.41%, 250=88.95%, 500=9.57% cpu : usr=0.22%, sys=1.49%, ctx=4095, 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=181218: Thu Aug 27 13:02:41 2026 read: IOPS=41, BW=165KiB/s (169kB/s)(4984KiB/30120msec) slat (usec): min=2350, max=55479, avg=13151.66, stdev=8016.94 clat (msec): min=80, max=387, avg=175.35, stdev=47.38 lat (msec): min=88, max=418, avg=188.51, stdev=49.44 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 112], 10.00th=[ 123], 20.00th=[ 134], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 167], 60.00th=[ 182], | 70.00th=[ 194], 80.00th=[ 215], 90.00th=[ 243], 95.00th=[ 262], | 99.00th=[ 313], 99.50th=[ 338], 99.90th=[ 376], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 33, max= 279, per=24.96%, avg=166.00, stdev=46.70, samples=59 iops : min= 8, max= 69, avg=41.00, stdev=11.64, samples=59 write: IOPS=43, BW=175KiB/s (179kB/s)(5256KiB/30120msec); 0 zone resets slat (usec): min=33, max=10439, avg=192.13, stdev=630.50 clat (msec): min=76, max=435, avg=184.23, stdev=46.46 lat (msec): min=76, max=435, avg=184.42, stdev=46.46 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 123], 10.00th=[ 132], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 190], | 70.00th=[ 203], 80.00th=[ 220], 90.00th=[ 249], 95.00th=[ 268], | 99.00th=[ 313], 99.50th=[ 334], 99.90th=[ 426], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 67, max= 262, per=25.09%, avg=173.85, stdev=39.92, samples=59 iops : min= 16, max= 65, avg=42.98, stdev=10.03, samples=59 lat (msec) : 100=1.33%, 250=90.16%, 500=8.52% cpu : usr=0.21%, sys=1.50%, ctx=4468, 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=181219: Thu Aug 27 13:02:41 2026 read: IOPS=42, BW=170KiB/s (174kB/s)(5060KiB/29845msec) slat (usec): min=34, max=50733, avg=12702.27, stdev=7372.07 clat (msec): min=62, max=382, avg=177.75, stdev=48.23 lat (msec): min=67, max=393, avg=190.46, stdev=49.55 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 111], 10.00th=[ 123], 20.00th=[ 138], | 30.00th=[ 150], 40.00th=[ 161], 50.00th=[ 169], 60.00th=[ 182], | 70.00th=[ 194], 80.00th=[ 215], 90.00th=[ 247], 95.00th=[ 271], | 99.00th=[ 309], 99.50th=[ 321], 99.90th=[ 351], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 79, max= 295, per=25.42%, avg=169.07, stdev=46.57, samples=59 iops : min= 19, max= 73, avg=41.76, stdev=11.68, samples=59 write: IOPS=43, BW=174KiB/s (178kB/s)(5180KiB/29845msec); 0 zone resets slat (usec): min=30, max=25875, avg=191.32, stdev=812.76 clat (msec): min=19, max=418, avg=181.87, stdev=47.76 lat (msec): min=21, max=418, avg=182.06, stdev=47.76 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 116], 10.00th=[ 128], 20.00th=[ 144], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 220], 90.00th=[ 243], 95.00th=[ 275], | 99.00th=[ 330], 99.50th=[ 334], 99.90th=[ 355], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 110, max= 294, per=24.99%, avg=173.19, stdev=38.89, samples=59 iops : min= 27, max= 73, avg=42.80, stdev= 9.67, samples=59 lat (msec) : 20=0.04%, 50=0.04%, 100=1.21%, 250=90.04%, 500=8.67% cpu : usr=0.23%, sys=1.55%, ctx=4148, 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=666KiB/s (682kB/s), 165KiB/s-170KiB/s (169kB/s-174kB/s), io=19.6MiB (20.5MB), run=29845-30140msec WRITE: bw=693KiB/s (710kB/s), 172KiB/s-175KiB/s (176kB/s-179kB/s), io=20.4MiB (21.4MB), run=29845-30140msec 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=181228: Thu Aug 27 13:02:49 2026 read: IOPS=2, BW=92.4MiB/s (96.9MB/s)(40.0MiB/433msec) slat (nsec): min=24575k, max=24575k, avg=24574613.00, stdev= 0.00 clat (nsec): min=391977k, max=391977k, avg=391977449.00, stdev= 0.00 lat (nsec): min=416556k, max=416556k, avg=416556356.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.01%, ctx=5, 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=92.4MiB/s (96.9MB/s), 92.4MiB/s-92.4MiB/s (96.9MB/s-96.9MB/s), io=40.0MiB (41.9MB), run=433-433msec 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