== sanity test 101a: check read-ahead for random reads === 19:05:25 (1787699125) nreads: 10000 file size: 96MB 135.295938s, 4.8439MB/s osc.lustre-OST0000-osc-ffff930c5866d000.rpc_stats= snapshot_time: 1787699277.047337305 secs.nsecs start_time: 1787699127.456180402 secs.nsecs elapsed_time: 149.591156903 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: 1 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5059 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: 5064 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: 27 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 109 2 4 | 2 2 4 1024: 206 4 8 | 4 4 8 2048: 431 8 16 | 8 8 16 4096: 856 16 33 | 16 16 32 8192: 1681 33 66 | 32 32 64 16384: 1672 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: 707 13 14 | 0 0 0 8192: 2892 57 71 | 1 1 1 16384: 1356 26 97 | 54 54 55 32768: 212 4 102 | 44 44 99 65536: 13 0 102 | 3 3 102 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 osc.lustre-OST0001-osc-ffff930c5866d000.rpc_stats= snapshot_time: 1787699277.047469705 secs.nsecs start_time: 1787699127.456216531 secs.nsecs elapsed_time: 149.591253174 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-ffff930c5866d000.read_ahead_stats= snapshot_time 1787699277.057467660 secs.nsecs start_time 1787699127.471347285 secs.nsecs elapsed_time 149.586120375 secs.nsecs hits 75876 samples [pages] misses 5064 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75876 samples [pages] failed_to_fast_read 5064 samples [pages] readahead_pages 5064 samples [pages] 1 15 75876