== sanity test 101a: check read-ahead for random reads === 16:30:56 (1786566656) nreads: 10000 file size: 96MB 180.268972s, 3.63328MB/s osc.lustre-OST0000-osc-ffff8f3fd8599800.rpc_stats= snapshot_time: 1786566849.084249055 secs.nsecs start_time: 1786566657.142464703 secs.nsecs elapsed_time: 191.941784352 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: 2 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 6552 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: 6556 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 23 0 0 | 0 0 4 128: 30 0 1 | 0 0 4 256: 69 1 2 | 0 0 4 512: 131 1 4 | 0 0 4 1024: 264 4 8 | 1 4 8 2048: 546 8 16 | 2 8 16 4096: 1097 16 33 | 4 16 32 8192: 2148 32 65 | 8 32 64 16384: 2232 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: 266 4 4 | 0 0 0 8192: 4330 66 70 | 0 0 0 16384: 2008 30 100 | 1 4 4 32768: 108 1 102 | 23 92 96 65536: 0 0 102 | 1 4 100 131072: 0 0 102 | 0 0 100 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-ffff8f3fd8599800.rpc_stats= snapshot_time: 1786566849.084387857 secs.nsecs start_time: 1786566657.142498800 secs.nsecs elapsed_time: 191.941889057 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-ffff8f3fd8599800.read_ahead_stats= snapshot_time 1786566849.093055012 secs.nsecs start_time 1786566657.155434630 secs.nsecs elapsed_time 191.937620382 secs.nsecs hits 98259 samples [pages] misses 6556 samples [pages] readpage_not_consecutive 9986 samples [pages] zero_size_window 98259 samples [pages] failed_to_fast_read 6556 samples [pages] readahead_pages 6556 samples [pages] 1 15 98259