== sanity test 101a: check read-ahead for random reads === 21:56:25 (1787709385) nreads: 10000 file size: 96MB 180.999927s, 3.04109MB/s osc.lustre-OST0000-osc-ffff9a48c5436800.rpc_stats= snapshot_time: 1787709584.197260462 secs.nsecs start_time: 1787709386.981529782 secs.nsecs elapsed_time: 197.215730680 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: 6 0 0 | 0 0 0 16: 5501 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: 5512 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: 4 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 24 0 1 | 0 0 4 256: 54 0 1 | 0 0 4 512: 117 2 4 | 0 0 4 1024: 201 3 7 | 1 4 8 2048: 473 8 16 | 2 8 16 4096: 900 16 32 | 4 16 32 8192: 1816 32 65 | 8 32 64 16384: 1895 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: 1 0 0 | 0 0 0 4096: 199 3 3 | 0 0 0 8192: 2757 50 53 | 0 0 0 16384: 2267 41 94 | 0 0 0 32768: 399 7 102 | 6 24 24 65536: 19 0 102 | 17 68 92 131072: 0 0 102 | 2 8 100 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-ffff9a48c5436800.rpc_stats= snapshot_time: 1787709584.197456680 secs.nsecs start_time: 1787709386.981562619 secs.nsecs elapsed_time: 197.215894061 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-ffff9a48c5436800.read_ahead_stats= snapshot_time 1787709584.218793193 secs.nsecs start_time 1787709386.996142397 secs.nsecs elapsed_time 197.222650796 secs.nsecs hits 82512 samples [pages] misses 5512 samples [pages] readpage_not_consecutive 8394 samples [pages] zero_size_window 82513 samples [pages] failed_to_fast_read 5512 samples [pages] readahead_pages 5511 samples [pages] 1 15 82512