== sanity test 101a: check read-ahead for random reads === 19:12:54 (1787785974) nreads: 10000 file size: 96MB 180.243599s, 3.45235MB/s osc.lustre-OST0000-osc-ffff8c0950859000.rpc_stats= snapshot_time: 1787786175.185847705 secs.nsecs start_time: 1787785975.448235710 secs.nsecs elapsed_time: 199.737611995 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: 1 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 6234 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 | 1 3 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6240 100 100 | 25 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 6 0 0 | 0 0 3 32: 7 0 0 | 0 0 3 64: 22 0 0 | 0 0 3 128: 29 0 1 | 1 3 7 256: 58 0 2 | 0 0 7 512: 122 1 3 | 0 0 7 1024: 247 3 7 | 1 3 11 2048: 521 8 16 | 2 7 19 4096: 1029 16 32 | 4 15 34 8192: 2037 32 65 | 8 30 65 16384: 2158 34 100 | 9 34 100 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: 668 10 10 | 0 0 0 8192: 3519 56 67 | 0 0 0 16384: 1813 29 96 | 0 0 0 32768: 351 5 101 | 5 19 19 65536: 35 0 102 | 20 76 96 131072: 0 0 102 | 1 3 100 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-ffff8c0950859000.rpc_stats= snapshot_time: 1787786175.186017277 secs.nsecs start_time: 1787785975.448385915 secs.nsecs elapsed_time: 199.737631362 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-ffff8c0950859000.read_ahead_stats= snapshot_time 1787786175.217740456 secs.nsecs start_time 1787785975.470211861 secs.nsecs elapsed_time 199.747528595 secs.nsecs hits 93492 samples [pages] misses 6240 samples [pages] readpage_not_consecutive 9488 samples [pages] zero_size_window 93492 samples [pages] failed_to_fast_read 6240 samples [pages] readahead_pages 6240 samples [pages] 1 15 93492