== sanity test 101a: check read-ahead for random reads === 05:02:40 (1780995760) nreads: 10000 file size: 96MB 180.891212s, 2.82844MB/s osc.lustre-OST0000-osc-ffff93c382bc3800.rpc_stats= snapshot_time: 1780995962.103878027 secs.nsecs start_time: 1780995762.764771825 secs.nsecs elapsed_time: 199.339106202 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: 0 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 5120 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: 5127 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: 13 0 0 | 0 0 4 128: 21 0 0 | 0 0 4 256: 53 1 2 | 0 0 4 512: 108 2 4 | 0 0 4 1024: 190 3 7 | 1 4 8 2048: 445 8 16 | 2 8 16 4096: 858 16 33 | 4 16 32 8192: 1665 32 65 | 8 32 64 16384: 1757 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: 209 4 4 | 0 0 0 8192: 2286 44 48 | 0 0 0 16384: 2249 43 92 | 0 0 0 32768: 466 9 101 | 6 24 24 65536: 35 0 102 | 17 68 92 131072: 1 0 102 | 2 8 100 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-ffff93c382bc3800.rpc_stats= snapshot_time: 1780995962.104061733 secs.nsecs start_time: 1780995762.765085676 secs.nsecs elapsed_time: 199.338976057 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-ffff93c382bc3800.read_ahead_stats= snapshot_time 1780995962.130112829 secs.nsecs start_time 1780995762.809889663 secs.nsecs elapsed_time 199.320223166 secs.nsecs hits 76803 samples [pages] misses 5127 samples [pages] readpage_not_consecutive 7803 samples [pages] zero_size_window 76803 samples [pages] failed_to_fast_read 5127 samples [pages] readahead_pages 5127 samples [pages] 1 15 76803