== sanity test 101a: check read-ahead for random reads === 14:41:09 (1758739269) nreads: 10000 file size: 96MB 146.307339s, 4.47934MB/s osc.lustre-OST0000-osc-ffff8c2252c52000.rpc_stats= snapshot_time: 1758739430.969772097 secs.nsecs start_time: 1758739271.459375040 secs.nsecs elapsed_time: 159.510397057 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 | 1 3 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 3 0 0 | 0 0 3 16: 6523 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 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: 6516 99 99 | 26 100 100 2: 12 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 5 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 22 0 0 | 0 0 7 128: 30 0 1 | 0 0 7 256: 68 1 2 | 0 0 7 512: 131 2 4 | 0 0 7 1024: 261 3 8 | 1 3 11 2048: 549 8 16 | 2 7 19 4096: 1085 16 33 | 4 15 34 8192: 2138 32 65 | 8 30 65 16384: 2228 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: 0 0 0 | 0 0 0 4096: 993 15 15 | 0 0 0 8192: 4298 65 81 | 0 0 0 16384: 1336 20 101 | 1 3 3 32768: 56 0 102 | 10 38 42 65536: 0 0 102 | 14 53 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-ffff8c2252c52000.rpc_stats= snapshot_time: 1758739430.969913252 secs.nsecs start_time: 1758739271.459409365 secs.nsecs elapsed_time: 159.510503887 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 25 25 2: 0 0 0 | 1 25 50 3: 0 0 0 | 1 25 75 4: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 2 50 50 32768: 0 0 0 | 2 50 100 llite.lustre-ffff8c2252c52000.read_ahead_stats= snapshot_time 1758739430.990237890 secs.nsecs start_time 1758739271.471968303 secs.nsecs elapsed_time 159.518269587 secs.nsecs hits 97819 samples [pages] misses 6528 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97821 samples [pages] failed_to_fast_read 6528 samples [pages] readahead_pages 6526 samples [pages] 4 15 97819