== sanity test 101a: check read-ahead for random reads === 01:22:52 (1787462572) nreads: 10000 file size: 96MB 180.345776s, 2.98126MB/s osc.lustre-OST0000-osc-ffff8ab9c628a000.rpc_stats= snapshot_time: 1787462774.169042787 secs.nsecs start_time: 1787462575.151931863 secs.nsecs elapsed_time: 199.017110924 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-ffff8ab9c628a000.rpc_stats= snapshot_time: 1787462774.169525294 secs.nsecs start_time: 1787462575.151967986 secs.nsecs elapsed_time: 199.017557308 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: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5373 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: 5375 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: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 55 1 2 | 0 0 4 512: 112 2 4 | 0 0 4 1024: 197 3 7 | 1 4 8 2048: 463 8 16 | 2 8 16 4096: 886 16 32 | 4 16 32 8192: 1752 32 65 | 8 32 64 16384: 1856 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: 306 5 5 | 0 0 0 8192: 2699 50 55 | 0 0 0 16384: 1899 35 91 | 0 0 0 32768: 544 10 101 | 5 20 20 65536: 54 1 102 | 17 68 88 131072: 1 0 102 | 3 12 100 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-ffff8ab9c628a000.read_ahead_stats= snapshot_time 1787462774.215101735 secs.nsecs start_time 1787462575.184343032 secs.nsecs elapsed_time 199.030758703 secs.nsecs hits 80582 samples [pages] misses 5376 samples [pages] readpage_not_consecutive 8199 samples [pages] zero_size_window 80583 samples [pages] failed_to_fast_read 5376 samples [pages] readahead_pages 5375 samples [pages] 6 15 80582