== sanity test 101a: check read-ahead for random reads === 08:20:44 (1788524444) nreads: 10000 file size: 96MB 174.779652s, 3.74964MB/s osc.lustre-OST0000-osc-ffff9e0dc5e9d800.rpc_stats= snapshot_time: 1788524639.512063435 secs.nsecs start_time: 1788524446.605489532 secs.nsecs elapsed_time: 192.906573903 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: 4 0 0 | 0 0 0 4: 3 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 6525 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: 6533 99 99 | 25 100 100 2: 1 0 100 | 0 0 100 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: 32 0 1 | 0 0 4 256: 72 1 2 | 0 0 4 512: 132 2 4 | 0 0 4 1024: 252 3 8 | 1 4 8 2048: 553 8 16 | 2 8 16 4096: 1069 16 32 | 4 16 32 8192: 2153 32 65 | 8 32 64 16384: 2233 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: 705 10 10 | 0 0 0 8192: 4013 61 72 | 0 0 0 16384: 1684 25 97 | 0 0 0 32768: 282 4 102 | 3 12 12 65536: 5 0 102 | 22 88 100 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-ffff9e0dc5e9d800.rpc_stats= snapshot_time: 1788524639.512213535 secs.nsecs start_time: 1788524446.605522538 secs.nsecs elapsed_time: 192.906690997 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-ffff9e0dc5e9d800.read_ahead_stats= snapshot_time 1788524639.537237261 secs.nsecs start_time 1788524446.614956608 secs.nsecs elapsed_time 192.922280653 secs.nsecs hits 97866 samples [pages] misses 6534 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97866 samples [pages] failed_to_fast_read 6534 samples [pages] readahead_pages 6534 samples [pages] 1 15 97866