== sanity test 101a: check read-ahead for random reads === 16:37:06 (1787863026) nreads: 10000 file size: 96MB 180.949658s, 3.21868MB/s osc.lustre-OST0000-osc-ffff9d84c31e9000.rpc_stats= snapshot_time: 1787863227.091596924 secs.nsecs start_time: 1787863028.137243593 secs.nsecs elapsed_time: 198.954353331 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 1 50 50 32768: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff9d84c31e9000.rpc_stats= snapshot_time: 1787863227.092651412 secs.nsecs start_time: 1787863028.137268849 secs.nsecs elapsed_time: 198.955382563 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 | 2 7 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 2 0 0 | 1 3 10 16: 5886 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5889 100 100 | 26 92 92 2: 0 0 100 | 2 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 6 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 19 0 0 | 0 0 14 128: 26 0 1 | 0 0 14 256: 61 1 2 | 0 0 14 512: 124 2 4 | 0 0 14 1024: 225 3 8 | 1 3 17 2048: 498 8 16 | 2 7 25 4096: 975 16 33 | 4 14 39 8192: 1936 32 65 | 8 28 67 16384: 2008 34 100 | 9 32 100 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: 642 10 10 | 0 0 0 8192: 3070 52 63 | 0 0 0 16384: 1894 32 95 | 1 3 3 32768: 402 6 102 | 5 17 21 65536: 20 0 102 | 22 78 100 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 llite.lustre-ffff9d84c31e9000.read_ahead_stats= snapshot_time 1787863227.112024076 secs.nsecs start_time 1787863028.155843297 secs.nsecs elapsed_time 198.956180779 secs.nsecs hits 88266 samples [pages] misses 5889 samples [pages] readpage_not_consecutive 8882 samples [pages] zero_size_window 88267 samples [pages] failed_to_fast_read 5889 samples [pages] readahead_pages 5888 samples [pages] 7 15 88266