== sanity test 101a: check read-ahead for random reads === 01:00:41 (1786942841) nreads: 10000 file size: 96MB 180.433830s, 3.35319MB/s osc.lustre-OST0000-osc-ffff9746516fa000.rpc_stats= snapshot_time: 1786943032.088911008 secs.nsecs start_time: 1786942841.980748406 secs.nsecs elapsed_time: 190.108162602 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: 2 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 5 0 0 | 0 0 7 16: 6038 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: 6048 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 7 0 0 | 0 0 11 64: 21 0 0 | 0 0 11 128: 30 0 1 | 0 0 11 256: 64 1 2 | 0 0 11 512: 130 2 4 | 0 0 11 1024: 245 4 8 | 1 3 14 2048: 525 8 17 | 2 7 22 4096: 1018 16 33 | 4 14 37 8192: 2011 33 67 | 8 29 66 16384: 1988 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: 0 0 0 | 0 0 0 2048: 8 0 0 | 0 0 0 4096: 1134 18 18 | 0 0 0 8192: 2964 49 67 | 2 7 7 16384: 1602 26 94 | 3 11 18 32768: 425 7 101 | 19 70 88 65536: 49 0 102 | 3 11 100 131072: 6 0 102 | 0 0 100 262144: 1 0 102 | 0 0 100 524288: 1 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-ffff9746516fa000.rpc_stats= snapshot_time: 1786943032.089062529 secs.nsecs start_time: 1786942841.980779946 secs.nsecs elapsed_time: 190.108282583 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 | 2 66 66 2: 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 3 100 100 llite.lustre-ffff9746516fa000.read_ahead_stats= snapshot_time 1786943032.102442869 secs.nsecs start_time 1786942841.987665061 secs.nsecs elapsed_time 190.114777808 secs.nsecs hits 90564 samples [pages] misses 6048 samples [pages] readpage_not_consecutive 9226 samples [pages] zero_size_window 90564 samples [pages] failed_to_fast_read 6048 samples [pages] readahead_pages 6047 samples [pages] 1 15 90564