== sanity test 101a: check read-ahead for random reads === 16:54:37 (1781211277) nreads: 10000 file size: 96MB 179.794361s, 3.64505MB/s osc.lustre-OST0000-osc-ffff8e9384793000.rpc_stats= snapshot_time: 1781211477.216677270 secs.nsecs start_time: 1781211279.094238532 secs.nsecs elapsed_time: 198.122438738 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-ffff8e9384793000.rpc_stats= snapshot_time: 1781211477.216753238 secs.nsecs start_time: 1781211279.094279038 secs.nsecs elapsed_time: 198.122474200 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: 3 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 5054 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: 5059 100 100 | 96 96 96 2: 0 0 100 | 4 4 100 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: 27 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 428 8 16 | 8 8 16 4096: 853 16 33 | 16 16 32 8192: 1677 33 66 | 32 32 64 16384: 1678 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: 211 4 4 | 0 0 0 8192: 2337 46 50 | 2 2 2 16384: 1926 38 88 | 37 37 39 32768: 637 12 101 | 52 52 91 65536: 65 1 102 | 9 9 100 131072: 1 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-ffff8e9384793000.read_ahead_stats= snapshot_time 1781211477.241466458 secs.nsecs start_time 1781211279.108778408 secs.nsecs elapsed_time 198.132688050 secs.nsecs hits 75791 samples [pages] misses 5059 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75793 samples [pages] failed_to_fast_read 5059 samples [pages] readahead_pages 5056 samples [pages] 2 15 75791