== sanity test 101a: check read-ahead for random reads === 09:16:23 (1783948583) nreads: 10000 file size: 96MB 180.246187s, 2.97054MB/s osc.lustre-OST0000-osc-ffff9b2d115d0000.rpc_stats= snapshot_time: 1783948786.118422625 secs.nsecs start_time: 1783948585.286605967 secs.nsecs elapsed_time: 200.831816658 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 | 2 66 66 2: 0 0 0 | 1 33 100 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 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 1 33 33 32768: 0 0 0 | 2 66 100 osc.lustre-OST0001-osc-ffff9b2d115d0000.rpc_stats= snapshot_time: 1783948786.118620208 secs.nsecs start_time: 1783948585.286660149 secs.nsecs elapsed_time: 200.831960059 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: 1 0 0 | 0 0 7 4: 3 0 0 | 0 0 7 8: 3 0 0 | 0 0 7 16: 5334 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5341 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 4 0 0 | 0 0 11 32: 7 0 0 | 0 0 11 64: 15 0 0 | 0 0 11 128: 23 0 1 | 0 0 11 256: 54 1 2 | 0 0 11 512: 114 2 4 | 0 0 11 1024: 198 3 7 | 1 3 14 2048: 461 8 16 | 2 7 22 4096: 876 16 32 | 4 14 37 8192: 1742 32 65 | 8 29 66 16384: 1841 34 100 | 9 33 100 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: 121 2 2 | 0 0 0 8192: 2524 47 49 | 1 3 3 16384: 2372 44 93 | 1 3 7 32768: 433 8 102 | 0 0 7 65536: 17 0 102 | 23 85 92 131072: 0 0 102 | 2 7 100 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-ffff9b2d115d0000.read_ahead_stats= snapshot_time 1783948786.147178087 secs.nsecs start_time 1783948585.314922893 secs.nsecs elapsed_time 200.832255194 secs.nsecs hits 79994 samples [pages] misses 5341 samples [pages] readpage_not_consecutive 8165 samples [pages] zero_size_window 79994 samples [pages] failed_to_fast_read 5341 samples [pages] readahead_pages 5341 samples [pages] 1 15 79994