== sanity test 101a: check read-ahead for random reads === 00:25:28 (1790742328) nreads: 10000 file size: 96MB 180.237770s, 3.61318MB/s osc.lustre-OST0000-osc-ffff91f83cd2f800.rpc_stats= snapshot_time: 1790742524.094722463 secs.nsecs start_time: 1790742329.680066806 secs.nsecs elapsed_time: 194.414655657 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: 3 0 0 | 0 0 0 8: 9 0 0 | 0 0 0 16: 6456 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: 6467 99 99 | 25 100 100 2: 1 0 100 | 0 0 100 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: 6 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 21 0 0 | 0 0 4 128: 29 0 1 | 0 0 4 256: 69 1 2 | 0 0 4 512: 130 2 4 | 0 0 4 1024: 259 4 8 | 1 4 8 2048: 545 8 16 | 2 8 16 4096: 1073 16 33 | 4 16 32 8192: 2137 33 66 | 8 32 64 16384: 2186 33 100 | 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: 745 11 11 | 0 0 0 8192: 3872 59 71 | 0 0 0 16384: 1825 28 99 | 0 0 0 32768: 169 2 102 | 12 48 48 65536: 9 0 102 | 13 52 100 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-ffff91f83cd2f800.rpc_stats= snapshot_time: 1790742524.098052922 secs.nsecs start_time: 1790742329.680095805 secs.nsecs elapsed_time: 194.417957117 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-ffff91f83cd2f800.read_ahead_stats= snapshot_time 1790742524.125455656 secs.nsecs start_time 1790742329.693341746 secs.nsecs elapsed_time 194.432113910 secs.nsecs hits 96858 samples [pages] misses 6468 samples [pages] readpage_not_consecutive 9929 samples [pages] zero_size_window 96858 samples [pages] failed_to_fast_read 6468 samples [pages] readahead_pages 6468 samples [pages] 2 15 96858