== sanity test 101a: check read-ahead for random reads === 13:32:33 (1787851953) nreads: 10000 file size: 96MB 180.171534s, 3.11654MB/s osc.lustre-OST0000-osc-ffff9a19f114f800.rpc_stats= snapshot_time: 1787852152.126878653 secs.nsecs start_time: 1787851954.522137263 secs.nsecs elapsed_time: 197.604741390 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 | 1 3 3 2: 1 0 0 | 0 0 3 4: 1 0 0 | 0 0 3 8: 5 0 0 | 0 0 3 16: 5610 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5616 99 99 | 26 100 100 2: 2 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 4 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 15 0 0 | 0 0 7 128: 24 0 1 | 0 0 7 256: 58 1 2 | 0 0 7 512: 119 2 4 | 0 0 7 1024: 207 3 7 | 1 3 11 2048: 479 8 16 | 2 7 19 4096: 915 16 32 | 4 15 34 8192: 1853 32 65 | 8 30 65 16384: 1930 34 100 | 9 34 100 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: 2 0 0 | 0 0 0 4096: 529 9 9 | 0 0 0 8192: 2763 49 58 | 0 0 0 16384: 1913 34 92 | 1 3 3 32768: 499 8 101 | 4 15 19 65536: 44 0 102 | 19 73 92 131072: 0 0 102 | 2 7 100 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-ffff9a19f114f800.rpc_stats= snapshot_time: 1787852152.127148522 secs.nsecs start_time: 1787851954.522168103 secs.nsecs elapsed_time: 197.604980419 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 2 50 50 32768: 0 0 0 | 2 50 100 llite.lustre-ffff9a19f114f800.read_ahead_stats= snapshot_time 1787852152.146538471 secs.nsecs start_time 1787851954.541439126 secs.nsecs elapsed_time 197.605099345 secs.nsecs hits 84132 samples [pages] misses 5618 samples [pages] readpage_not_consecutive 8563 samples [pages] zero_size_window 84133 samples [pages] failed_to_fast_read 5618 samples [pages] readahead_pages 5617 samples [pages] 1 15 84132