== sanity test 101a: check read-ahead for random reads === 17:40:23 (1777498823) nreads: 10000 file size: 96MB 180.545401s, 3.32425MB/s osc.lustre-OST0000-osc-ffff98b583e15000.rpc_stats= snapshot_time: 1777499015.106856572 secs.nsecs start_time: 1777498824.540365332 secs.nsecs elapsed_time: 190.566491240 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 3 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 | 1 33 33 8192: 0 0 0 | 1 33 66 16384: 0 0 0 | 0 0 66 32768: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff98b583e15000.rpc_stats= snapshot_time: 1777499015.106973777 secs.nsecs start_time: 1777498824.540397884 secs.nsecs elapsed_time: 190.566575893 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: 1 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 2 0 0 | 0 0 1 16: 4637 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: 4640 99 99 | 102 100 100 2: 1 0 100 | 0 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: 4 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 15 0 0 | 0 0 2 128: 25 0 1 | 0 0 2 256: 48 1 2 | 1 0 3 512: 100 2 4 | 2 1 5 1024: 187 4 8 | 4 3 9 2048: 397 8 16 | 8 7 17 4096: 785 16 33 | 16 15 33 8192: 1545 33 67 | 32 31 64 16384: 1526 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: 4 0 0 | 0 0 0 4096: 129 2 2 | 1 0 0 8192: 2032 43 46 | 13 12 13 16384: 1905 41 87 | 77 75 89 32768: 568 12 99 | 11 10 100 65536: 92 1 101 | 0 0 100 131072: 12 0 102 | 0 0 100 262144: 7 0 102 | 0 0 100 524288: 0 0 102 | 1 0 100 1048576: 1 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 llite.lustre-ffff98b583e15000.read_ahead_stats= snapshot_time 1777499015.135696270 secs.nsecs start_time 1777498824.550475803 secs.nsecs elapsed_time 190.585220467 secs.nsecs hits 69549 samples [pages] misses 4641 samples [pages] readpage_not_consecutive 9153 samples [pages] zero_size_window 69550 samples [pages] failed_to_fast_read 4641 samples [pages] readahead_pages 4640 samples [pages] 1 15 69549