== sanity test 101a: check read-ahead for random reads === 02:59:08 (1785394748) nreads: 10000 file size: 96MB 180.412166s, 3.44513MB/s osc.lustre-OST0000-osc-ffff99793c8f5000.rpc_stats= snapshot_time: 1785394957.133881773 secs.nsecs start_time: 1785394749.682771855 secs.nsecs elapsed_time: 207.451109918 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: 1 0 0 | 0 0 0 2: 1 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 8 0 0 | 0 0 0 16: 4768 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4779 100 100 | 95 95 95 2: 0 0 100 | 4 4 99 3: 0 0 100 | 1 1 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 26 0 1 | 0 0 1 256: 48 1 2 | 1 1 2 512: 102 2 4 | 2 2 4 1024: 196 4 8 | 4 4 8 2048: 410 8 16 | 8 8 16 4096: 806 16 33 | 16 16 32 8192: 1583 33 66 | 32 32 64 16384: 1579 33 100 | 36 36 100 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: 409 8 8 | 0 0 0 8192: 1679 35 43 | 0 0 0 16384: 2142 44 88 | 26 26 26 32768: 614 12 101 | 60 60 86 65536: 47 0 102 | 13 13 99 131072: 1 0 102 | 1 1 100 262144: 0 0 102 | 1 1 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 osc.lustre-OST0001-osc-ffff99793c8f5000.rpc_stats= snapshot_time: 1785394957.134014458 secs.nsecs start_time: 1785394749.682819312 secs.nsecs elapsed_time: 207.451195146 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 | 0 0 0 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 llite.lustre-ffff99793c8f5000.read_ahead_stats= snapshot_time 1785394957.192938696 secs.nsecs start_time 1785394749.698025263 secs.nsecs elapsed_time 207.494913433 secs.nsecs hits 71533 samples [pages] misses 4779 samples [pages] readpage_not_consecutive 9477 samples [pages] zero_size_window 71534 samples [pages] failed_to_fast_read 4779 samples [pages] readahead_pages 4778 samples [pages] 1 15 71533