== sanity test 101a: check read-ahead for random reads === 16:26:59 (1786566419) nreads: 10000 file size: 96MB 130.679594s, 5.01501MB/s osc.lustre-OST0000-osc-ffff8ae283369800.rpc_stats= snapshot_time: 1786566568.430834226 secs.nsecs start_time: 1786566421.152531036 secs.nsecs elapsed_time: 147.278303190 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 | 0 0 0 2: 0 0 0 | 0 0 0 4: 4 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5036 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 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5046 100 100 | 99 99 99 2: 0 0 100 | 1 1 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 26 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 106 2 4 | 2 2 4 1024: 208 4 8 | 4 4 8 2048: 428 8 16 | 8 8 16 4096: 853 16 33 | 16 16 32 8192: 1673 33 66 | 32 32 64 16384: 1670 33 100 | 36 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: 2 0 0 | 0 0 0 4096: 650 12 12 | 0 0 0 8192: 3206 63 76 | 2 2 2 16384: 1129 22 98 | 45 45 47 32768: 167 3 102 | 51 51 98 65536: 11 0 102 | 2 2 100 131072: 0 0 102 | 2 2 102 262144: 0 0 102 | 0 0 102 524288: 0 0 102 | 0 0 102 1048576: 0 0 102 | 0 0 102 2097152: 0 0 102 | 0 0 102 4194304: 0 0 102 | 0 0 102 8388608: 0 0 102 | 0 0 102 16777216: 0 0 102 | 0 0 102 33554432: 0 0 102 | 0 0 102 67108864: 0 0 102 | 0 0 102 134217728: 0 0 102 | 0 0 102 268435456: 0 0 102 | 0 0 102 536870912: 0 0 102 | 0 0 102 1073741824: 0 0 102 | 0 0 102 osc.lustre-OST0001-osc-ffff8ae283369800.rpc_stats= snapshot_time: 1786566568.431709016 secs.nsecs start_time: 1786566421.152570856 secs.nsecs elapsed_time: 147.279138160 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 llite.lustre-ffff8ae283369800.read_ahead_stats= snapshot_time 1786566568.450439247 secs.nsecs start_time 1786566421.184827124 secs.nsecs elapsed_time 147.265612123 secs.nsecs hits 75536 samples [pages] misses 5046 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75538 samples [pages] failed_to_fast_read 5046 samples [pages] readahead_pages 5044 samples [pages] 2 15 75536