== sanity test 101a: check read-ahead for random reads === 21:31:00 (1782610260) nreads: 10000 file size: 96MB 180.504244s, 3.01168MB/s osc.lustre-OST0000-osc-ffff8b7b50fa2800.rpc_stats= snapshot_time: 1782610463.150023145 secs.nsecs start_time: 1782610262.092015073 secs.nsecs elapsed_time: 201.058008072 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: 0 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 5434 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5439 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 55 1 2 | 0 0 4 512: 113 2 4 | 0 0 4 1024: 199 3 7 | 1 4 8 2048: 467 8 16 | 2 8 16 4096: 894 16 32 | 4 16 32 8192: 1786 32 65 | 8 32 64 16384: 1870 34 100 | 9 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: 267 4 4 | 0 0 0 8192: 2739 50 55 | 0 0 0 16384: 2111 38 94 | 0 0 0 32768: 430 7 101 | 1 4 4 65536: 21 0 102 | 23 92 96 131072: 0 0 102 | 1 4 100 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-ffff8b7b50fa2800.rpc_stats= snapshot_time: 1782610463.150163335 secs.nsecs start_time: 1782610262.092068893 secs.nsecs elapsed_time: 201.058094442 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 llite.lustre-ffff8b7b50fa2800.read_ahead_stats= snapshot_time 1782610463.172323250 secs.nsecs start_time 1782610262.122028206 secs.nsecs elapsed_time 201.050295044 secs.nsecs hits 81496 samples [pages] misses 5439 samples [pages] readpage_not_consecutive 8290 samples [pages] zero_size_window 81496 samples [pages] failed_to_fast_read 5439 samples [pages] readahead_pages 5439 samples [pages] 5 15 81496