== sanity test 101a: check read-ahead for random reads === 21:30:45 (1782610245) nreads: 10000 file size: 96MB 180.169769s, 3.39993MB/s osc.lustre-OST0000-osc-ffff8e7d03358000.rpc_stats= snapshot_time: 1782610445.103079726 secs.nsecs start_time: 1782610246.779903149 secs.nsecs elapsed_time: 198.323176577 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 osc.lustre-OST0001-osc-ffff8e7d03358000.rpc_stats= snapshot_time: 1782610445.103151933 secs.nsecs start_time: 1782610246.779962196 secs.nsecs elapsed_time: 198.323189737 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: 0 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 4717 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: 4721 100 100 | 93 93 93 2: 0 0 100 | 7 7 100 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: 15 0 0 | 0 0 1 128: 25 0 1 | 0 0 1 256: 49 1 2 | 1 1 2 512: 100 2 4 | 2 2 4 1024: 193 4 8 | 4 4 8 2048: 404 8 16 | 8 8 16 4096: 796 16 33 | 16 16 32 8192: 1564 33 66 | 32 32 64 16384: 1562 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: 35 0 0 | 0 0 0 8192: 1858 39 40 | 3 3 3 16384: 2317 49 89 | 26 26 29 32768: 586 12 101 | 62 62 91 65536: 35 0 102 | 9 9 100 131072: 0 0 102 | 1 1 101 262144: 0 0 102 | 0 0 101 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 llite.lustre-ffff8e7d03358000.read_ahead_stats= snapshot_time 1782610445.114992523 secs.nsecs start_time 1782610246.808842971 secs.nsecs elapsed_time 198.306149552 secs.nsecs hits 70751 samples [pages] misses 4721 samples [pages] readpage_not_consecutive 9340 samples [pages] zero_size_window 70752 samples [pages] failed_to_fast_read 4721 samples [pages] readahead_pages 4720 samples [pages] 2 15 70751