== sanity test 398c: run fio to test AIO ================= 21:10:23 (1777425023) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.143068 s, 293 MB/s osc.lustre-OST0000-osc-ffff9520ce41c000.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=159114: Tue Apr 28 21:10:54 2026 write: IOPS=90, BW=360KiB/s (369kB/s)(10.0MiB/28418msec); 0 zone resets slat (usec): min=35, max=5042, avg=208.66, stdev=142.66 clat (msec): min=40, max=316, avg=177.30, stdev=33.47 lat (msec): min=40, max=317, avg=177.51, stdev=33.48 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 125], 10.00th=[ 138], 20.00th=[ 153], | 30.00th=[ 163], 40.00th=[ 171], 50.00th=[ 180], 60.00th=[ 186], | 70.00th=[ 194], 80.00th=[ 205], 90.00th=[ 220], 95.00th=[ 230], | 99.00th=[ 245], 99.50th=[ 251], 99.90th=[ 288], 99.95th=[ 305], | 99.99th=[ 317] bw ( KiB/s): min= 256, max= 612, per=24.96%, avg=359.11, stdev=50.57, samples=56 iops : min= 64, max= 153, avg=89.75, stdev=12.64, samples=56 lat (msec) : 50=0.62%, 100=1.29%, 250=97.46%, 500=0.62% cpu : usr=0.20%, sys=1.53%, ctx=2727, 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=159115: Tue Apr 28 21:10:54 2026 write: IOPS=89, BW=360KiB/s (368kB/s)(10.0MiB/28460msec); 0 zone resets slat (usec): min=35, max=13728, avg=220.32, stdev=291.00 clat (msec): min=67, max=265, avg=177.46, stdev=31.49 lat (msec): min=67, max=265, avg=177.69, stdev=31.50 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 126], 10.00th=[ 138], 20.00th=[ 150], | 30.00th=[ 163], 40.00th=[ 171], 50.00th=[ 180], 60.00th=[ 186], | 70.00th=[ 197], 80.00th=[ 205], 90.00th=[ 218], 95.00th=[ 226], | 99.00th=[ 247], 99.50th=[ 251], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 266] bw ( KiB/s): min= 264, max= 517, per=24.92%, avg=358.55, stdev=45.07, samples=56 iops : min= 66, max= 129, avg=89.61, stdev=11.25, samples=56 lat (msec) : 100=1.48%, 250=98.01%, 500=0.51% cpu : usr=0.14%, sys=1.69%, ctx=2838, 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=159116: Tue Apr 28 21:10:54 2026 write: IOPS=89, BW=360KiB/s (368kB/s)(10.0MiB/28461msec); 0 zone resets slat (usec): min=41, max=12895, avg=216.42, stdev=273.55 clat (msec): min=27, max=270, avg=177.47, stdev=31.81 lat (msec): min=28, max=270, avg=177.69, stdev=31.82 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 126], 10.00th=[ 138], 20.00th=[ 150], | 30.00th=[ 163], 40.00th=[ 171], 50.00th=[ 180], 60.00th=[ 186], | 70.00th=[ 194], 80.00th=[ 203], 90.00th=[ 218], 95.00th=[ 228], | 99.00th=[ 249], 99.50th=[ 257], 99.90th=[ 262], 99.95th=[ 266], | 99.99th=[ 271] bw ( KiB/s): min= 272, max= 511, per=24.88%, avg=358.02, stdev=44.91, samples=56 iops : min= 68, max= 127, avg=89.46, stdev=11.18, samples=56 lat (msec) : 50=0.04%, 100=1.56%, 250=97.54%, 500=0.86% cpu : usr=0.15%, sys=1.60%, ctx=2747, 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=159117: Tue Apr 28 21:10:54 2026 write: IOPS=90, BW=360KiB/s (369kB/s)(10.0MiB/28431msec); 0 zone resets slat (usec): min=44, max=3399, avg=213.91, stdev=117.46 clat (msec): min=24, max=288, avg=177.31, stdev=33.51 lat (msec): min=24, max=288, avg=177.52, stdev=33.51 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 122], 10.00th=[ 138], 20.00th=[ 153], | 30.00th=[ 163], 40.00th=[ 171], 50.00th=[ 180], 60.00th=[ 186], | 70.00th=[ 194], 80.00th=[ 205], 90.00th=[ 220], 95.00th=[ 230], | 99.00th=[ 251], 99.50th=[ 257], 99.90th=[ 266], 99.95th=[ 275], | 99.99th=[ 288] bw ( KiB/s): min= 264, max= 581, per=24.94%, avg=358.84, stdev=52.74, samples=56 iops : min= 66, max= 145, avg=89.68, stdev=13.16, samples=56 lat (msec) : 50=0.39%, 100=1.80%, 250=96.84%, 500=0.98% cpu : usr=0.18%, sys=1.59%, ctx=2859, 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=1439KiB/s (1474kB/s), 360KiB/s-360KiB/s (368kB/s-369kB/s), io=40.0MiB (41.9MB), run=28418-28461msec 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=159131: Tue Apr 28 21:11:18 2026 read: IOPS=63, BW=253KiB/s (259kB/s)(5048KiB/19958msec) slat (usec): min=1103, max=7516, avg=2490.46, stdev=796.55 clat (msec): min=8, max=129, avg=78.16, stdev=13.66 lat (msec): min=11, max=131, avg=80.65, stdev=13.75 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 62], 20.00th=[ 68], | 30.00th=[ 72], 40.00th=[ 75], 50.00th=[ 80], 60.00th=[ 83], | 70.00th=[ 86], 80.00th=[ 90], 90.00th=[ 95], 95.00th=[ 99], | 99.00th=[ 107], 99.50th=[ 111], 99.90th=[ 127], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 159, max= 352, per=25.00%, avg=251.28, stdev=48.99, samples=39 iops : min= 39, max= 88, avg=62.79, stdev=12.29, samples=39 write: IOPS=65, BW=260KiB/s (266kB/s)(5192KiB/19958msec); 0 zone resets slat (usec): min=49, max=697, avg=191.44, stdev=86.93 clat (msec): min=47, max=271, avg=166.94, stdev=35.13 lat (msec): min=48, max=271, avg=167.14, stdev=35.13 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 111], 10.00th=[ 122], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 167], 60.00th=[ 178], | 70.00th=[ 188], 80.00th=[ 199], 90.00th=[ 211], 95.00th=[ 226], | 99.00th=[ 249], 99.50th=[ 264], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 176, max= 320, per=24.78%, avg=259.18, stdev=30.76, samples=39 iops : min= 44, max= 80, avg=64.77, stdev= 7.70, samples=39 lat (msec) : 10=0.04%, 20=0.23%, 50=0.70%, 100=47.15%, 250=51.45% lat (msec) : 500=0.43% cpu : usr=0.27%, sys=2.35%, ctx=4949, 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=159132: Tue Apr 28 21:11:18 2026 read: IOPS=62, BW=249KiB/s (255kB/s)(4976KiB/19967msec) slat (usec): min=1113, max=6685, avg=2502.44, stdev=788.41 clat (msec): min=8, max=130, avg=78.01, stdev=13.30 lat (msec): min=9, max=132, avg=80.52, stdev=13.37 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 63], 20.00th=[ 68], | 30.00th=[ 72], 40.00th=[ 75], 50.00th=[ 79], 60.00th=[ 82], | 70.00th=[ 85], 80.00th=[ 89], 90.00th=[ 95], 95.00th=[ 100], | 99.00th=[ 107], 99.50th=[ 111], 99.90th=[ 128], 99.95th=[ 131], | 99.99th=[ 131] bw ( KiB/s): min= 144, max= 352, per=24.69%, avg=248.10, stdev=54.51, samples=39 iops : min= 36, max= 88, avg=62.00, stdev=13.66, samples=39 write: IOPS=65, BW=264KiB/s (270kB/s)(5264KiB/19967msec); 0 zone resets slat (usec): min=51, max=3612, avg=195.91, stdev=140.76 clat (msec): min=43, max=270, avg=166.04, stdev=35.64 lat (msec): min=43, max=271, avg=166.23, stdev=35.64 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 110], 10.00th=[ 121], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 197], 90.00th=[ 213], 95.00th=[ 226], | 99.00th=[ 247], 99.50th=[ 259], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 184, max= 320, per=25.01%, avg=261.59, stdev=33.26, samples=39 iops : min= 46, max= 80, avg=65.36, stdev= 8.34, samples=39 lat (msec) : 10=0.04%, 20=0.27%, 50=0.51%, 100=46.76%, 250=51.95% lat (msec) : 500=0.47% cpu : usr=0.22%, sys=2.37%, ctx=4927, 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=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=159133: Tue Apr 28 21:11:18 2026 read: IOPS=62, BW=250KiB/s (256kB/s)(4984KiB/19910msec) slat (usec): min=35, max=9676, avg=2486.10, stdev=836.01 clat (msec): min=3, max=147, avg=77.69, stdev=15.36 lat (msec): min=5, max=150, avg=80.18, stdev=15.52 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 68], | 30.00th=[ 72], 40.00th=[ 75], 50.00th=[ 79], 60.00th=[ 83], | 70.00th=[ 86], 80.00th=[ 89], 90.00th=[ 95], 95.00th=[ 101], | 99.00th=[ 111], 99.50th=[ 114], 99.90th=[ 130], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 159, max= 352, per=24.95%, avg=250.77, stdev=52.56, samples=39 iops : min= 39, max= 88, avg=62.67, stdev=13.17, samples=39 write: IOPS=65, BW=264KiB/s (270kB/s)(5256KiB/19910msec); 0 zone resets slat (usec): min=36, max=1215, avg=192.83, stdev=96.08 clat (msec): min=31, max=268, avg=165.98, stdev=36.61 lat (msec): min=32, max=268, avg=166.18, stdev=36.62 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 111], 10.00th=[ 120], 20.00th=[ 136], | 30.00th=[ 146], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 178], | 70.00th=[ 186], 80.00th=[ 197], 90.00th=[ 211], 95.00th=[ 226], | 99.00th=[ 251], 99.50th=[ 264], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 200, max= 328, per=25.14%, avg=262.95, stdev=35.10, samples=39 iops : min= 50, max= 82, avg=65.72, stdev= 8.79, samples=39 lat (msec) : 4=0.04%, 10=0.20%, 20=0.47%, 50=1.09%, 100=45.90% lat (msec) : 250=51.72%, 500=0.59% cpu : usr=0.28%, sys=2.28%, ctx=4937, 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=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=159134: Tue Apr 28 21:11:18 2026 read: IOPS=63, BW=254KiB/s (260kB/s)(5060KiB/19910msec) slat (usec): min=1047, max=9171, avg=2469.88, stdev=797.68 clat (msec): min=3, max=162, avg=77.96, stdev=14.87 lat (msec): min=6, max=164, avg=80.44, stdev=14.95 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 68], | 30.00th=[ 72], 40.00th=[ 75], 50.00th=[ 79], 60.00th=[ 82], | 70.00th=[ 86], 80.00th=[ 90], 90.00th=[ 95], 95.00th=[ 102], | 99.00th=[ 112], 99.50th=[ 115], 99.90th=[ 148], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 168, max= 320, per=25.40%, avg=255.28, stdev=39.37, samples=39 iops : min= 42, max= 80, avg=63.79, stdev= 9.87, samples=39 write: IOPS=65, BW=260KiB/s (266kB/s)(5180KiB/19910msec); 0 zone resets slat (usec): min=47, max=1193, avg=187.29, stdev=86.80 clat (msec): min=71, max=271, avg=166.64, stdev=34.54 lat (msec): min=72, max=271, avg=166.83, stdev=34.55 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 112], 10.00th=[ 123], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 157], 50.00th=[ 165], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 197], 90.00th=[ 213], 95.00th=[ 226], | 99.00th=[ 247], 99.50th=[ 251], 99.90th=[ 266], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 200, max= 336, per=24.82%, avg=259.59, stdev=29.91, samples=39 iops : min= 50, max= 84, avg=64.87, stdev= 7.51, samples=39 lat (msec) : 4=0.04%, 10=0.08%, 20=0.43%, 50=0.55%, 100=46.52% lat (msec) : 250=52.07%, 500=0.31% cpu : usr=0.25%, sys=2.30%, ctx=5024, 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=1005KiB/s (1029kB/s), 249KiB/s-254KiB/s (255kB/s-260kB/s), io=19.6MiB (20.5MB), run=19910-19967msec WRITE: bw=1046KiB/s (1071kB/s), 260KiB/s-264KiB/s (266kB/s-270kB/s), io=20.4MiB (21.4MB), run=19910-19967msec 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=159140: Tue Apr 28 21:11:21 2026 read: IOPS=7, BW=310MiB/s (325MB/s)(40.0MiB/129msec) slat (nsec): min=11672k, max=11672k, avg=11671830.00, stdev= 0.00 clat (nsec): min=112269k, max=112269k, avg=112269403.00, stdev= 0.00 lat (nsec): min=123945k, max=123945k, avg=123945240.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 113], | 70.00th=[ 113], 80.00th=[ 113], 90.00th=[ 113], 95.00th=[ 113], | 99.00th=[ 113], 99.50th=[ 113], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] lat (msec) : 250=100.00% cpu : usr=0.00%, sys=7.81%, ctx=40, majf=0, minf=10 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=310MiB/s (325MB/s), 310MiB/s-310MiB/s (325MB/s-325MB/s), io=40.0MiB (41.9MB), run=129-129msec 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