== sanity test 101a: check read-ahead for random reads === 13:10:56 (1787850656) nreads: 10000 file size: 96MB 180.654233s, 3.23627MB/s osc.lustre-OST0000-osc-ffff8c0c8091b000.rpc_stats= snapshot_time: 1787850858.108800163 secs.nsecs start_time: 1787850658.340420821 secs.nsecs elapsed_time: 199.768379342 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-ffff8c0c8091b000.rpc_stats= snapshot_time: 1787850858.108868803 secs.nsecs start_time: 1787850658.340456742 secs.nsecs elapsed_time: 199.768412061 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 2: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 4516 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: 4521 100 100 | 100 100 100 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: 23 0 1 | 0 0 1 256: 46 1 2 | 1 1 2 512: 96 2 4 | 2 2 4 1024: 181 4 8 | 4 4 8 2048: 391 8 16 | 8 8 16 4096: 758 16 33 | 16 16 32 8192: 1510 33 67 | 32 32 64 16384: 1488 32 100 | 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: 1 0 0 | 0 0 0 4096: 184 4 4 | 0 0 0 8192: 1736 38 42 | 1 1 1 16384: 1949 43 85 | 30 30 31 32768: 681 15 100 | 56 56 87 65536: 68 1 102 | 13 13 100 131072: 2 0 102 | 1 1 101 262144: 5 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-ffff8c0c8091b000.read_ahead_stats= snapshot_time 1787850858.117128660 secs.nsecs start_time 1787850658.350056646 secs.nsecs elapsed_time 199.767072014 secs.nsecs hits 67740 samples [pages] misses 4521 samples [pages] readpage_not_consecutive 8916 samples [pages] zero_size_window 67740 samples [pages] failed_to_fast_read 4521 samples [pages] readahead_pages 4521 samples [pages] 2 15 67740