== sanity test 101a: check read-ahead for random reads === 12:52:49 (1780332769) nreads: 10000 file size: 96MB 166.988903s, 3.92457MB/s osc.lustre-OST0000-osc-ffff8a49cc109000.rpc_stats= snapshot_time: 1780332954.540419197 secs.nsecs start_time: 1780332771.441864973 secs.nsecs elapsed_time: 183.098554224 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-ffff8a49cc109000.rpc_stats= snapshot_time: 1780332954.540508443 secs.nsecs start_time: 1780332771.441910359 secs.nsecs elapsed_time: 183.098598084 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 | 0 0 0 2: 1 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5040 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: 207 4 8 | 4 4 8 2048: 427 8 16 | 8 8 16 4096: 851 16 33 | 16 16 32 8192: 1676 33 66 | 32 32 64 16384: 1671 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: 0 0 0 | 0 0 0 4096: 120 2 2 | 0 0 0 8192: 2520 49 52 | 4 4 4 16384: 2142 42 94 | 43 43 47 32768: 374 7 102 | 51 51 98 65536: 9 0 102 | 4 4 102 131072: 0 0 102 | 0 0 102 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 llite.lustre-ffff8a49cc109000.read_ahead_stats= snapshot_time 1780332954.550221321 secs.nsecs start_time 1780332771.464534119 secs.nsecs elapsed_time 183.085687202 secs.nsecs hits 75603 samples [pages] misses 5046 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75604 samples [pages] failed_to_fast_read 5046 samples [pages] readahead_pages 5045 samples [pages] 1 15 75603