== sanity test 101a: check read-ahead for random reads === 22:11:20 (1788747080) nreads: 10000 file size: 96MB 180.977545s, 3.27214MB/s osc.lustre-OST0000-osc-ffff8a15d0839000.rpc_stats= snapshot_time: 1788747277.099466402 secs.nsecs start_time: 1788747081.885828048 secs.nsecs elapsed_time: 195.213638354 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 osc.lustre-OST0001-osc-ffff8a15d0839000.rpc_stats= snapshot_time: 1788747277.099542952 secs.nsecs start_time: 1788747081.885871423 secs.nsecs elapsed_time: 195.213671529 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 | 0 0 0 2: 1 0 0 | 0 0 0 4: 3 0 0 | 0 0 0 8: 8 0 0 | 0 0 0 16: 5897 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: 5910 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: 18 0 0 | 0 0 4 128: 25 0 1 | 0 0 4 256: 62 1 2 | 0 0 4 512: 123 2 4 | 0 0 4 1024: 225 3 7 | 1 4 8 2048: 506 8 16 | 2 8 16 4096: 968 16 32 | 4 16 32 8192: 1953 33 65 | 8 32 64 16384: 2011 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: 540 9 9 | 0 0 0 8192: 3440 58 67 | 0 0 0 16384: 1574 26 94 | 0 0 0 32768: 429 7 101 | 10 40 40 65536: 55 0 102 | 15 60 100 131072: 9 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 llite.lustre-ffff8a15d0839000.read_ahead_stats= snapshot_time 1788747277.108872158 secs.nsecs start_time 1788747081.912602159 secs.nsecs elapsed_time 195.196269999 secs.nsecs hits 88466 samples [pages] misses 5910 samples [pages] readpage_not_consecutive 9031 samples [pages] zero_size_window 88467 samples [pages] failed_to_fast_read 5910 samples [pages] readahead_pages 5909 samples [pages] 1 15 88466