== sanity test 101a: check read-ahead for random reads === 04:40:06 (1787820006) nreads: 10000 file size: 96MB 180.918663s, 3.28226MB/s osc.lustre-OST0000-osc-ffff905e98746800.rpc_stats= snapshot_time: 1787820207.092439405 secs.nsecs start_time: 1787820008.356924255 secs.nsecs elapsed_time: 198.735515150 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 1 50 50 32768: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff905e98746800.rpc_stats= snapshot_time: 1787820207.092523321 secs.nsecs start_time: 1787820008.356954638 secs.nsecs elapsed_time: 198.735568683 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 7 7 2: 2 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 5 0 0 | 1 3 10 16: 5914 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5922 100 100 | 27 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 8 0 0 | 0 0 14 64: 17 0 0 | 0 0 14 128: 25 0 1 | 0 0 14 256: 61 1 2 | 0 0 14 512: 122 2 4 | 0 0 14 1024: 230 3 7 | 1 3 17 2048: 499 8 16 | 2 7 25 4096: 973 16 32 | 4 14 39 8192: 1966 33 66 | 8 28 67 16384: 2011 33 100 | 9 32 100 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: 335 5 5 | 0 0 0 8192: 3215 54 59 | 1 3 3 16384: 2178 36 96 | 1 3 7 32768: 316 5 102 | 4 14 21 65536: 18 0 102 | 19 67 89 131072: 0 0 102 | 3 10 100 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 llite.lustre-ffff905e98746800.read_ahead_stats= snapshot_time 1787820207.103109025 secs.nsecs start_time 1787820008.381274232 secs.nsecs elapsed_time 198.721834793 secs.nsecs hits 88694 samples [pages] misses 5922 samples [pages] readpage_not_consecutive 9056 samples [pages] zero_size_window 88694 samples [pages] failed_to_fast_read 5922 samples [pages] readahead_pages 5922 samples [pages] 1 15 88694