== sanity test 101a: check read-ahead for random reads === 04:42:49 (1779871369) nreads: 10000 file size: 96MB 180.439841s, 3.18455MB/s osc.lustre-OST0000-osc-ffff8b21e169a000.rpc_stats= snapshot_time: 1779871562.158819067 secs.nsecs start_time: 1779871370.571381742 secs.nsecs elapsed_time: 191.587437325 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 | 1 3 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 3 0 0 | 1 3 7 16: 5761 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: 5764 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: 20 0 0 | 0 0 11 128: 24 0 1 | 0 0 11 256: 59 1 2 | 0 0 11 512: 120 2 4 | 0 0 11 1024: 225 3 8 | 1 3 14 2048: 488 8 16 | 2 7 22 4096: 958 16 33 | 4 14 37 8192: 1887 32 65 | 8 29 66 16384: 1967 34 100 | 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: 46 0 0 | 0 0 0 4096: 1203 20 21 | 0 0 0 8192: 2630 45 67 | 2 7 7 16384: 1471 25 92 | 2 7 14 32768: 475 8 101 | 18 66 81 65536: 53 0 101 | 5 18 100 131072: 15 0 102 | 0 0 100 262144: 5 0 102 | 0 0 100 524288: 2 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-ffff8b21e169a000.rpc_stats= snapshot_time: 1779871562.159007367 secs.nsecs start_time: 1779871370.571409757 secs.nsecs elapsed_time: 191.587597610 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 | 3 100 100 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 | 1 33 33 8192: 0 0 0 | 2 66 100 llite.lustre-ffff8b21e169a000.read_ahead_stats= snapshot_time 1779871562.207614015 secs.nsecs start_time 1779871370.580825013 secs.nsecs elapsed_time 191.626789002 secs.nsecs hits 86408 samples [pages] misses 5764 samples [pages] readpage_not_consecutive 8763 samples [pages] zero_size_window 86408 samples [pages] failed_to_fast_read 5764 samples [pages] readahead_pages 5764 samples [pages] 4 15 86408