== sanity test 101a: check read-ahead for random reads === 17:13:50 (1787606030) nreads: 10000 file size: 96MB 136.774432s, 4.79154MB/s osc.lustre-OST0000-osc-ffff9d6446703800.rpc_stats= snapshot_time: 1787606186.374825275 secs.nsecs start_time: 1787606032.715454115 secs.nsecs elapsed_time: 153.659371160 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 | 2 1 1 2: 2 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 3 0 0 | 0 0 1 16: 5038 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: 5044 100 100 | 93 91 91 2: 0 0 100 | 9 8 100 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: 4 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: 53 1 2 | 1 0 3 512: 107 2 4 | 2 1 5 1024: 208 4 8 | 4 3 9 2048: 428 8 16 | 8 7 17 4096: 854 16 33 | 16 15 33 8192: 1672 33 66 | 32 31 64 16384: 1667 33 100 | 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: 1 0 0 | 0 0 0 4096: 423 8 8 | 0 0 0 8192: 3133 62 70 | 2 1 1 16384: 1413 28 98 | 47 46 48 32768: 187 3 102 | 51 50 98 65536: 6 0 102 | 3 2 100 131072: 0 0 102 | 1 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 osc.lustre-OST0001-osc-ffff9d6446703800.rpc_stats= snapshot_time: 1787606186.375331979 secs.nsecs start_time: 1787606032.715481130 secs.nsecs elapsed_time: 153.659850849 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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 | 1 100 100 llite.lustre-ffff9d6446703800.read_ahead_stats= snapshot_time 1787606186.387370432 secs.nsecs start_time 1787606032.729871305 secs.nsecs elapsed_time 153.657499127 secs.nsecs hits 75540 samples [pages] misses 5044 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75541 samples [pages] failed_to_fast_read 5044 samples [pages] readahead_pages 5043 samples [pages] 1 15 75540