== sanity test 101a: check read-ahead for random reads === 13:31:06 (1758735066) nreads: 10000 file size: 96MB 53.400849s, 12.2725MB/s osc.lustre-OST0000-osc-ffff9b8b50368800.rpc_stats= snapshot_time: 1758735129.138178132 secs.nsecs start_time: 1758735067.341612842 secs.nsecs elapsed_time: 61.796565290 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 | 2 1 1 2: 4 0 0 | 0 0 1 4: 1 0 0 | 0 0 1 8: 6 0 0 | 0 0 1 16: 4994 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5008 100 100 | 101 99 99 2: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 5 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 26 0 1 | 0 0 2 256: 52 1 2 | 1 0 3 512: 106 2 4 | 2 1 5 1024: 204 4 8 | 4 3 9 2048: 427 8 16 | 8 7 17 4096: 856 17 33 | 16 15 33 8192: 1670 33 67 | 32 31 64 16384: 1637 32 100 | 36 35 100 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: 2268 45 45 | 2 1 1 4096: 2769 55 100 | 14 13 15 8192: 90 1 102 | 79 77 93 16384: 0 0 102 | 8 7 100 32768: 0 0 102 | 0 0 100 65536: 0 0 102 | 0 0 100 131072: 0 0 102 | 0 0 100 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-ffff9b8b50368800.rpc_stats= snapshot_time: 1758735129.138260180 secs.nsecs start_time: 1758735067.341661520 secs.nsecs elapsed_time: 61.796598660 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 | 1 50 50 2: 0 0 0 | 0 0 50 4: 0 0 0 | 0 0 50 8: 0 0 0 | 1 50 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 50 50 2: 0 0 0 | 1 50 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 1 50 50 4096: 0 0 0 | 1 50 100 llite.lustre-ffff9b8b50368800.read_ahead_stats= snapshot_time 1758735129.142682014 secs.nsecs start_time 1758735067.348930735 secs.nsecs elapsed_time 61.793751279 secs.nsecs hits 74908 samples [pages] misses 5008 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 74911 samples [pages] failed_to_fast_read 5008 samples [pages] readahead_pages 5005 samples [pages] 1 15 74908