== sanity test 101a: check read-ahead for random reads === 14:20:20 (1767036020) nreads: 10000 file size: 96MB 66.255020s, 9.89148MB/s osc.lustre-OST0000-osc-ffff994320cdc800.rpc_stats= snapshot_time: 1767036096.129427091 secs.nsecs start_time: 1767036020.698805091 secs.nsecs elapsed_time: 75.430622000 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: 2 0 0 | 2 7 7 2: 3 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 5 0 0 | 0 0 7 16: 6449 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6460 99 99 | 26 96 96 2: 1 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 5 0 0 | 0 0 11 32: 8 0 0 | 0 0 11 64: 20 0 0 | 0 0 11 128: 31 0 1 | 0 0 11 256: 73 1 2 | 0 0 11 512: 135 2 4 | 0 0 11 1024: 264 4 8 | 1 3 14 2048: 564 8 17 | 2 7 22 4096: 1093 16 34 | 4 14 37 8192: 2159 33 67 | 8 29 66 16384: 2104 32 100 | 9 33 100 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: 1 0 0 | 0 0 0 2048: 4636 71 71 | 0 0 0 4096: 1935 29 101 | 2 7 7 8192: 41 0 102 | 13 48 55 16384: 1 0 102 | 12 44 100 32768: 0 0 102 | 0 0 100 65536: 0 0 102 | 0 0 100 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 osc.lustre-OST0001-osc-ffff994320cdc800.rpc_stats= snapshot_time: 1767036096.129552167 secs.nsecs start_time: 1767036020.698867126 secs.nsecs elapsed_time: 75.430685041 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 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 33 33 2: 0 0 0 | 1 33 66 3: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 | 1 33 33 4096: 0 0 0 | 2 66 100 llite.lustre-ffff994320cdc800.read_ahead_stats= snapshot_time 1767036096.135524419 secs.nsecs start_time 1767036020.707092008 secs.nsecs elapsed_time 75.428432411 secs.nsecs hits 96729 samples [pages] misses 6460 samples [pages] readpage_not_consecutive 9991 samples [pages] failed_grab_cache_page 4 samples [pages] zero_size_window 96729 samples [pages] failed_to_reach_end 1 samples [pages] failed_to_fast_read 6459 samples [pages] readahead_pages 6460 samples [pages] 1 15 96729