== sanity test 101a: check read-ahead for random reads === 02:25:04 (1790922304) nreads: 10000 file size: 96MB 180.222370s, 3.55821MB/s osc.lustre-OST0000-osc-ffff8edc3d21b000.rpc_stats= snapshot_time: 1790922503.104271326 secs.nsecs start_time: 1790922306.749276617 secs.nsecs elapsed_time: 196.354994709 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: 4 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 6355 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: 6363 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 30 0 1 | 0 0 4 256: 68 1 2 | 0 0 4 512: 130 2 4 | 0 0 4 1024: 244 3 8 | 1 4 8 2048: 536 8 16 | 2 8 16 4096: 1043 16 32 | 4 16 32 8192: 2087 32 65 | 8 32 64 16384: 2187 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: 850 13 13 | 0 0 0 8192: 3470 54 67 | 0 0 0 16384: 1906 29 97 | 0 0 0 32768: 273 4 102 | 7 28 28 65536: 14 0 102 | 17 68 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-ffff8edc3d21b000.rpc_stats= snapshot_time: 1790922503.104394956 secs.nsecs start_time: 1790922306.749308155 secs.nsecs elapsed_time: 196.355086801 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-ffff8edc3d21b000.read_ahead_stats= snapshot_time 1790922503.115714973 secs.nsecs start_time 1790922306.767853777 secs.nsecs elapsed_time 196.347861196 secs.nsecs hits 95336 samples [pages] misses 6363 samples [pages] readpage_not_consecutive 9777 samples [pages] zero_size_window 95336 samples [pages] failed_to_fast_read 6363 samples [pages] readahead_pages 6363 samples [pages] 2 15 95336