== sanity test 101a: check read-ahead for random reads === 16:09:12 (1781208552) nreads: 10000 file size: 96MB 92.797472s, 7.06226MB/s osc.lustre-OST0000-osc-ffff8db898417000.rpc_stats= snapshot_time: 1781208655.629439974 secs.nsecs start_time: 1781208553.098722547 secs.nsecs elapsed_time: 102.530717427 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 osc.lustre-OST0001-osc-ffff8db898417000.rpc_stats= snapshot_time: 1781208655.629512105 secs.nsecs start_time: 1781208553.098757342 secs.nsecs elapsed_time: 102.530754763 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: 2 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 6508 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6515 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 6 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 20 0 0 | 0 0 4 128: 29 0 1 | 0 0 4 256: 70 1 2 | 0 0 4 512: 134 2 4 | 0 0 4 1024: 260 3 8 | 1 4 8 2048: 550 8 16 | 2 8 16 4096: 1089 16 33 | 4 16 32 8192: 2175 33 66 | 8 32 64 16384: 2169 33 100 | 9 36 100 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: 527 8 8 | 0 0 0 4096: 4448 68 76 | 0 0 0 8192: 1639 25 101 | 0 0 0 16384: 55 0 102 | 25 100 100 32768: 1 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 llite.lustre-ffff8db898417000.read_ahead_stats= snapshot_time 1781208655.636717455 secs.nsecs start_time 1781208553.106587830 secs.nsecs elapsed_time 102.530129625 secs.nsecs hits 97606 samples [pages] misses 6515 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97606 samples [pages] failed_to_fast_read 6515 samples [pages] readahead_pages 6515 samples [pages] 1 15 97606