== sanity test 101a: check read-ahead for random reads === 18:12:10 (1784758330) nreads: 10000 file size: 96MB 151.063873s, 4.3383MB/s osc.lustre-OST0000-osc-ffff8c733ca28000.rpc_stats= snapshot_time: 1784758501.773884681 secs.nsecs start_time: 1784758331.943358281 secs.nsecs elapsed_time: 169.830526400 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-ffff8c733ca28000.rpc_stats= snapshot_time: 1784758501.774085258 secs.nsecs start_time: 1784758331.944268304 secs.nsecs elapsed_time: 169.829816954 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: 1 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5037 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: 5041 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: 16 0 0 | 0 0 1 128: 26 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 208 4 8 | 4 4 8 2048: 428 8 16 | 8 8 16 4096: 854 16 33 | 16 16 32 8192: 1671 33 66 | 32 32 64 16384: 1665 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: 387 7 7 | 0 0 0 8192: 2848 56 64 | 2 2 2 16384: 1612 31 96 | 40 40 42 32768: 287 5 101 | 54 54 96 65536: 25 0 102 | 5 5 101 131072: 0 0 102 | 0 0 101 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-ffff8c733ca28000.read_ahead_stats= snapshot_time 1784758501.785968310 secs.nsecs start_time 1784758331.984377185 secs.nsecs elapsed_time 169.801591125 secs.nsecs hits 75555 samples [pages] misses 5041 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75555 samples [pages] failed_to_fast_read 5041 samples [pages] readahead_pages 5041 samples [pages] 1 15 75555