== sanity test 101a: check read-ahead for random reads === 22:58:42 (1787885922) nreads: 10000 file size: 96MB 180.753260s, 3.37917MB/s osc.lustre-OST0000-osc-ffff9dc611a3e800.rpc_stats= snapshot_time: 1787886120.111329961 secs.nsecs start_time: 1787885923.715367646 secs.nsecs elapsed_time: 196.395962315 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: 1 0 0 | 1 3 3 2: 2 0 0 | 0 0 3 4: 4 0 0 | 0 0 3 8: 3 0 0 | 0 0 3 16: 6102 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6112 100 100 | 25 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 6 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 20 0 0 | 0 0 7 128: 27 0 1 | 0 0 7 256: 64 1 2 | 0 0 7 512: 127 2 4 | 0 0 7 1024: 244 3 8 | 1 3 11 2048: 515 8 16 | 2 7 19 4096: 1018 16 33 | 4 15 34 8192: 2001 32 66 | 8 30 65 16384: 2077 33 100 | 9 34 100 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: 586 9 9 | 0 0 0 8192: 3305 54 63 | 0 0 0 16384: 2051 33 97 | 1 3 3 32768: 293 4 102 | 14 53 57 65536: 21 0 102 | 11 42 100 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-ffff9dc611a3e800.rpc_stats= snapshot_time: 1787886120.111547975 secs.nsecs start_time: 1787885923.715404239 secs.nsecs elapsed_time: 196.396143736 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 1 25 25 16384: 0 0 0 | 3 75 100 llite.lustre-ffff9dc611a3e800.read_ahead_stats= snapshot_time 1787886120.127262785 secs.nsecs start_time 1787885923.729189493 secs.nsecs elapsed_time 196.398073292 secs.nsecs hits 91522 samples [pages] misses 6112 samples [pages] readpage_not_consecutive 9313 samples [pages] zero_size_window 91523 samples [pages] failed_to_fast_read 6112 samples [pages] readahead_pages 6111 samples [pages] 1 15 91522