== sanity test 101a: check read-ahead for random reads === 01:00:55 (1787374855) nreads: 10000 file size: 96MB 129.846927s, 5.04717MB/s osc.lustre-OST0000-osc-ffff97334aa98000.rpc_stats= snapshot_time: 1787375003.477957867 secs.nsecs start_time: 1787374857.654361620 secs.nsecs elapsed_time: 145.823596247 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: 1 0 0 | 0 0 0 4: 8 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 5057 99 100 | 1 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 | 100 99 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5072 100 100 | 98 97 97 2: 0 0 100 | 3 2 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 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: 4 0 0 | 0 0 0 32: 6 0 0 | 0 0 0 64: 16 0 0 | 0 0 0 128: 27 0 1 | 0 0 0 256: 42 0 1 | 2 1 2 512: 109 2 4 | 2 1 4 1024: 206 4 8 | 4 3 8 2048: 431 8 16 | 8 7 16 4096: 855 16 33 | 16 15 32 8192: 1681 33 66 | 32 31 64 16384: 1692 33 100 | 36 35 100 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: 789 15 15 | 0 0 0 8192: 3141 61 77 | 2 1 1 16384: 1095 21 99 | 43 42 44 32768: 157 3 102 | 52 51 96 65536: 7 0 102 | 6 5 101 131072: 0 0 102 | 0 0 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 osc.lustre-OST0001-osc-ffff97334aa98000.rpc_stats= snapshot_time: 1787375003.478177827 secs.nsecs start_time: 1787374857.654396080 secs.nsecs elapsed_time: 145.823781747 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-ffff97334aa98000.read_ahead_stats= snapshot_time 1787375003.491925255 secs.nsecs start_time 1787374857.690867993 secs.nsecs elapsed_time 145.801057262 secs.nsecs hits 75863 samples [pages] misses 5072 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75863 samples [pages] failed_to_fast_read 5072 samples [pages] readahead_pages 5072 samples [pages] 1 15 75863