== sanity test 101a: check read-ahead for random reads === 17:00:59 (1786827659) nreads: 10000 file size: 96MB 180.215139s, 3.57436MB/s osc.lustre-OST0000-osc-ffff953504f70000.rpc_stats= snapshot_time: 1786827864.095373605 secs.nsecs start_time: 1786827661.947406134 secs.nsecs elapsed_time: 202.147967471 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: 0 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 6443 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: 6444 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: 65 1 2 | 0 0 4 512: 131 2 4 | 0 0 4 1024: 260 4 8 | 1 4 8 2048: 539 8 16 | 2 8 16 4096: 1072 16 33 | 4 16 32 8192: 2099 32 65 | 8 32 64 16384: 2209 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: 2 0 0 | 0 0 0 4096: 983 15 15 | 0 0 0 8192: 3564 55 70 | 0 0 0 16384: 1720 26 97 | 0 0 0 32768: 313 4 102 | 2 8 8 65536: 15 0 102 | 17 68 76 131072: 0 0 102 | 6 24 100 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-ffff953504f70000.rpc_stats= snapshot_time: 1786827864.095536142 secs.nsecs start_time: 1786827661.947442952 secs.nsecs elapsed_time: 202.148093190 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-ffff953504f70000.read_ahead_stats= snapshot_time 1786827864.108088270 secs.nsecs start_time 1786827662.033992055 secs.nsecs elapsed_time 202.074096215 secs.nsecs hits 96629 samples [pages] misses 6444 samples [pages] readpage_not_consecutive 9821 samples [pages] zero_size_window 96629 samples [pages] failed_to_fast_read 6444 samples [pages] readahead_pages 6444 samples [pages] 4 15 96629