== sanity test 398c: run fio to test AIO ================= 04:39:53 (1789461593) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.569955 s, 73.6 MB/s osc.lustre-OST0000-osc-ffff9f452f5be000.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=179881: Tue Sep 15 04:40:27 2026 write: IOPS=105, BW=423KiB/s (433kB/s)(10.0MiB/24201msec); 0 zone resets slat (usec): min=23, max=15006, avg=167.10, stdev=638.47 clat (msec): min=34, max=309, avg=150.88, stdev=35.48 lat (msec): min=39, max=309, avg=151.05, stdev=35.46 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 106], 10.00th=[ 114], 20.00th=[ 125], | 30.00th=[ 132], 40.00th=[ 138], 50.00th=[ 144], 60.00th=[ 150], | 70.00th=[ 161], 80.00th=[ 178], 90.00th=[ 199], 95.00th=[ 218], | 99.00th=[ 279], 99.50th=[ 305], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 253, max= 520, per=24.93%, avg=421.10, stdev=71.25, samples=48 iops : min= 63, max= 130, avg=104.90, stdev=17.79, samples=48 lat (msec) : 50=0.16%, 100=3.24%, 250=94.69%, 500=1.91% cpu : usr=0.18%, sys=0.92%, ctx=1911, 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=179882: Tue Sep 15 04:40:27 2026 write: IOPS=105, BW=423KiB/s (433kB/s)(10.0MiB/24229msec); 0 zone resets slat (usec): min=22, max=17190, avg=158.42, stdev=585.57 clat (msec): min=24, max=332, avg=150.16, stdev=35.13 lat (msec): min=24, max=332, avg=150.32, stdev=35.14 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 106], 10.00th=[ 115], 20.00th=[ 125], | 30.00th=[ 131], 40.00th=[ 138], 50.00th=[ 146], 60.00th=[ 150], | 70.00th=[ 161], 80.00th=[ 174], 90.00th=[ 197], 95.00th=[ 220], | 99.00th=[ 266], 99.50th=[ 300], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 222, max= 517, per=24.94%, avg=421.19, stdev=72.76, samples=48 iops : min= 55, max= 129, avg=104.94, stdev=18.17, samples=48 lat (msec) : 50=0.23%, 100=2.62%, 250=95.86%, 500=1.29% cpu : usr=0.21%, sys=0.99%, ctx=2472, 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=179883: Tue Sep 15 04:40:27 2026 write: IOPS=105, BW=423KiB/s (433kB/s)(10.0MiB/24224msec); 0 zone resets slat (usec): min=21, max=17292, avg=147.48, stdev=711.90 clat (msec): min=22, max=303, avg=150.45, stdev=34.60 lat (msec): min=22, max=303, avg=150.60, stdev=34.58 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 108], 10.00th=[ 117], 20.00th=[ 125], | 30.00th=[ 131], 40.00th=[ 138], 50.00th=[ 144], 60.00th=[ 153], | 70.00th=[ 163], 80.00th=[ 176], 90.00th=[ 194], 95.00th=[ 218], | 99.00th=[ 266], 99.50th=[ 275], 99.90th=[ 279], 99.95th=[ 296], | 99.99th=[ 305] bw ( KiB/s): min= 253, max= 630, per=24.94%, avg=421.31, stdev=84.08, samples=48 iops : min= 63, max= 157, avg=104.98, stdev=21.03, samples=48 lat (msec) : 50=0.12%, 100=4.18%, 250=93.87%, 500=1.84% cpu : usr=0.17%, sys=0.90%, ctx=1668, 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=179884: Tue Sep 15 04:40:27 2026 write: IOPS=105, BW=422KiB/s (433kB/s)(10.0MiB/24243msec); 0 zone resets slat (usec): min=21, max=14102, avg=186.11, stdev=788.58 clat (msec): min=35, max=331, avg=150.38, stdev=35.58 lat (msec): min=35, max=332, avg=150.57, stdev=35.59 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 105], 10.00th=[ 114], 20.00th=[ 124], | 30.00th=[ 131], 40.00th=[ 138], 50.00th=[ 144], 60.00th=[ 153], | 70.00th=[ 161], 80.00th=[ 176], 90.00th=[ 199], 95.00th=[ 215], | 99.00th=[ 268], 99.50th=[ 288], 99.90th=[ 305], 99.95th=[ 317], | 99.99th=[ 334] bw ( KiB/s): min= 253, max= 568, per=24.86%, avg=419.94, stdev=76.67, samples=48 iops : min= 63, max= 142, avg=104.60, stdev=19.15, samples=48 lat (msec) : 50=0.35%, 100=3.28%, 250=94.65%, 500=1.72% cpu : usr=0.21%, sys=1.01%, ctx=2546, 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 Run status group 0 (all jobs): WRITE: bw=1690KiB/s (1730kB/s), 422KiB/s-423KiB/s (433kB/s-433kB/s), io=40.0MiB (41.9MB), run=24201-24243msec 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=179898: Tue Sep 15 04:41:06 2026 read: IOPS=42, BW=171KiB/s (175kB/s)(5048KiB/29486msec) slat (msec): min=2, max=201, avg=13.58, stdev=11.11 clat (msec): min=37, max=658, avg=173.32, stdev=56.96 lat (msec): min=53, max=673, avg=186.91, stdev=59.62 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 103], 10.00th=[ 115], 20.00th=[ 134], | 30.00th=[ 148], 40.00th=[ 157], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 190], 80.00th=[ 207], 90.00th=[ 232], 95.00th=[ 257], | 99.00th=[ 321], 99.50th=[ 575], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 31, max= 343, per=25.01%, avg=170.07, stdev=52.43, samples=58 iops : min= 7, max= 85, avg=42.03, stdev=13.13, samples=58 write: IOPS=44, BW=176KiB/s (180kB/s)(5192KiB/29486msec); 0 zone resets slat (usec): min=24, max=13713, avg=208.32, stdev=721.75 clat (msec): min=30, max=641, avg=178.08, stdev=50.82 lat (msec): min=30, max=641, avg=178.29, stdev=50.81 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 111], 10.00th=[ 125], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 174], 60.00th=[ 184], | 70.00th=[ 194], 80.00th=[ 209], 90.00th=[ 232], 95.00th=[ 264], | 99.00th=[ 305], 99.50th=[ 317], 99.90th=[ 625], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 37, max= 319, per=24.79%, avg=175.50, stdev=50.57, samples=58 iops : min= 9, max= 79, avg=43.41, stdev=12.67, samples=58 lat (msec) : 50=0.16%, 100=2.85%, 250=91.05%, 500=5.43%, 750=0.51% cpu : usr=0.26%, sys=1.85%, ctx=4199, 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=179899: Tue Sep 15 04:41:06 2026 read: IOPS=43, BW=173KiB/s (177kB/s)(4976KiB/28836msec) slat (usec): min=35, max=82599, avg=13218.40, stdev=7771.18 clat (msec): min=27, max=494, avg=169.95, stdev=47.33 lat (msec): min=49, max=528, avg=183.18, stdev=49.31 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 104], 10.00th=[ 115], 20.00th=[ 133], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 203], 90.00th=[ 230], 95.00th=[ 249], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 485], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 82, max= 335, per=25.26%, avg=171.74, stdev=47.66, samples=57 iops : min= 20, max= 83, avg=42.47, stdev=11.89, samples=57 write: IOPS=45, BW=183KiB/s (187kB/s)(5264KiB/28836msec); 0 zone resets slat (usec): min=24, max=7839, avg=185.07, stdev=554.87 clat (msec): min=77, max=470, avg=176.74, stdev=44.05 lat (msec): min=77, max=470, avg=176.92, stdev=44.07 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 114], 10.00th=[ 125], 20.00th=[ 144], | 30.00th=[ 153], 40.00th=[ 163], 50.00th=[ 174], 60.00th=[ 182], | 70.00th=[ 194], 80.00th=[ 209], 90.00th=[ 232], 95.00th=[ 257], | 99.00th=[ 296], 99.50th=[ 313], 99.90th=[ 451], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 88, max= 336, per=25.78%, avg=182.51, stdev=45.21, samples=57 iops : min= 22, max= 84, avg=45.14, stdev=11.33, samples=57 lat (msec) : 50=0.04%, 100=2.77%, 250=91.64%, 500=5.55% cpu : usr=0.28%, sys=1.72%, ctx=3993, 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=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=179900: Tue Sep 15 04:41:06 2026 read: IOPS=42, BW=170KiB/s (174kB/s)(4984KiB/29365msec) slat (usec): min=2300, max=86102, avg=13682.92, stdev=8423.67 clat (msec): min=52, max=335, avg=172.79, stdev=44.30 lat (msec): min=74, max=351, avg=186.48, stdev=46.73 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 105], 10.00th=[ 116], 20.00th=[ 138], | 30.00th=[ 150], 40.00th=[ 161], 50.00th=[ 169], 60.00th=[ 180], | 70.00th=[ 190], 80.00th=[ 205], 90.00th=[ 232], 95.00th=[ 262], | 99.00th=[ 296], 99.50th=[ 305], 99.90th=[ 326], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 15, max= 327, per=24.97%, avg=169.81, stdev=47.02, samples=58 iops : min= 3, max= 81, avg=41.97, stdev=11.80, samples=58 write: IOPS=44, BW=179KiB/s (183kB/s)(5256KiB/29365msec); 0 zone resets slat (usec): min=23, max=9209, avg=187.19, stdev=499.97 clat (msec): min=78, max=326, avg=176.43, stdev=42.67 lat (msec): min=78, max=326, avg=176.62, stdev=42.65 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 110], 10.00th=[ 122], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 174], 60.00th=[ 184], | 70.00th=[ 194], 80.00th=[ 209], 90.00th=[ 234], 95.00th=[ 257], | 99.00th=[ 288], 99.50th=[ 296], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 352, per=25.16%, avg=178.16, stdev=52.85, samples=58 iops : min= 7, max= 88, avg=44.07, stdev=13.27, samples=58 lat (msec) : 100=2.62%, 250=90.98%, 500=6.41% cpu : usr=0.32%, sys=1.63%, ctx=4062, 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=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=179901: Tue Sep 15 04:41:06 2026 read: IOPS=42, BW=172KiB/s (176kB/s)(5060KiB/29463msec) slat (msec): min=2, max=142, avg=13.79, stdev= 9.14 clat (msec): min=35, max=367, avg=172.82, stdev=46.27 lat (msec): min=70, max=378, avg=186.61, stdev=48.17 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 104], 10.00th=[ 116], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 169], 60.00th=[ 178], | 70.00th=[ 190], 80.00th=[ 207], 90.00th=[ 239], 95.00th=[ 257], | 99.00th=[ 300], 99.50th=[ 330], 99.90th=[ 363], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 22, max= 311, per=25.13%, avg=170.88, stdev=47.61, samples=58 iops : min= 5, max= 77, avg=42.24, stdev=11.94, samples=58 write: IOPS=43, BW=176KiB/s (180kB/s)(5180KiB/29463msec); 0 zone resets slat (usec): min=25, max=10742, avg=181.45, stdev=592.90 clat (msec): min=70, max=367, avg=177.76, stdev=44.72 lat (msec): min=70, max=367, avg=177.94, stdev=44.71 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 109], 10.00th=[ 123], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 197], 80.00th=[ 211], 90.00th=[ 234], 95.00th=[ 259], | 99.00th=[ 309], 99.50th=[ 338], 99.90th=[ 355], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 30, max= 335, per=24.66%, avg=174.57, stdev=49.60, samples=58 iops : min= 7, max= 83, avg=43.16, stdev=12.43, samples=58 lat (msec) : 50=0.04%, 100=2.93%, 250=90.35%, 500=6.68% cpu : usr=0.28%, sys=1.66%, ctx=4052, 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=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=681KiB/s (697kB/s), 170KiB/s-173KiB/s (174kB/s-177kB/s), io=19.6MiB (20.5MB), run=28836-29486msec WRITE: bw=709KiB/s (726kB/s), 176KiB/s-183KiB/s (180kB/s-187kB/s), io=20.4MiB (21.4MB), run=28836-29486msec 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=179910: Tue Sep 15 04:41:18 2026 read: IOPS=1, BW=68.5MiB/s (71.8MB/s)(40.0MiB/584msec) slat (nsec): min=41403k, max=41403k, avg=41403073.00, stdev= 0.00 clat (nsec): min=522399k, max=522399k, avg=522399128.00, stdev= 0.00 lat (nsec): min=563807k, max=563807k, avg=563806823.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] lat (msec) : 750=100.00% cpu : usr=0.17%, sys=2.06%, ctx=5, 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=68.5MiB/s (71.8MB/s), 68.5MiB/s-68.5MiB/s (71.8MB/s-71.8MB/s), io=40.0MiB (41.9MB), run=584-584msec 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