== sanity test 101a: check read-ahead for random reads === 02:50:09 (1785221409) nreads: 10000 file size: 96MB 110.016583s, 5.95692MB/s osc.lustre-OST0000-osc-ffff92b009e67000.rpc_stats= snapshot_time: 1785221532.741438569 secs.nsecs start_time: 1785221410.659586751 secs.nsecs elapsed_time: 122.081851818 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 2 0 0 | 2 1 1 2: 1 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 6 0 0 | 0 0 1 16: 5056 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5065 100 100 | 101 99 99 2: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 4 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 27 0 1 | 0 0 2 256: 53 1 2 | 1 0 3 512: 109 2 4 | 2 1 5 1024: 206 4 8 | 4 3 9 2048: 433 8 16 | 8 7 17 4096: 855 16 33 | 16 15 33 8192: 1678 33 66 | 32 31 64 16384: 1675 33 100 | 36 35 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 1 0 0 | 0 0 0 4096: 890 17 17 | 0 0 0 8192: 3770 74 92 | 18 17 17 16384: 512 10 102 | 78 76 94 32768: 12 0 102 | 7 6 100 65536: 0 0 102 | 0 0 100 131072: 0 0 102 | 0 0 100 262144: 0 0 102 | 0 0 100 524288: 0 0 102 | 0 0 100 1048576: 0 0 102 | 0 0 100 2097152: 0 0 102 | 0 0 100 4194304: 0 0 102 | 0 0 100 8388608: 0 0 102 | 0 0 100 16777216: 0 0 102 | 0 0 100 33554432: 0 0 102 | 0 0 100 67108864: 0 0 102 | 0 0 100 134217728: 0 0 102 | 0 0 100 268435456: 0 0 102 | 0 0 100 536870912: 0 0 102 | 0 0 100 1073741824: 0 0 102 | 0 0 100 osc.lustre-OST0001-osc-ffff92b009e67000.rpc_stats= snapshot_time: 1785221532.741586710 secs.nsecs start_time: 1785221410.660342258 secs.nsecs elapsed_time: 122.081244452 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 0 0 0 | 1 33 33 8192: 0 0 0 | 0 0 33 16384: 0 0 0 | 2 66 100 llite.lustre-ffff92b009e67000.read_ahead_stats= snapshot_time 1785221532.771402374 secs.nsecs start_time 1785221410.674963216 secs.nsecs elapsed_time 122.096439158 secs.nsecs hits 75843 samples [pages] misses 5065 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75845 samples [pages] failed_to_fast_read 5065 samples [pages] readahead_pages 5063 samples [pages] 1 15 75843