== sanity test 101a: check read-ahead for random reads === 15:25:33 (1778613933) nreads: 10000 file size: 96MB 151.219014s, 4.33385MB/s osc.lustre-OST0000-osc-ffff91ecc5242000.rpc_stats= snapshot_time: 1778614103.463402205 secs.nsecs start_time: 1778613935.845970640 secs.nsecs elapsed_time: 167.617431565 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-ffff91ecc5242000.rpc_stats= snapshot_time: 1778614103.463492516 secs.nsecs start_time: 1778613935.846000508 secs.nsecs elapsed_time: 167.617492008 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: 0 0 0 | 0 0 0 4: 4 0 0 | 0 0 0 8: 7 0 0 | 0 0 0 16: 5033 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: 5045 100 100 | 100 100 100 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: 52 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 430 8 16 | 8 8 16 4096: 854 16 33 | 16 16 32 8192: 1672 33 66 | 32 32 64 16384: 1668 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: 405 8 8 | 0 0 0 8192: 2806 55 63 | 2 2 2 16384: 1627 32 95 | 52 52 54 32768: 303 6 101 | 46 46 100 65536: 23 0 102 | 2 2 102 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-ffff91ecc5242000.read_ahead_stats= snapshot_time 1778614103.477434748 secs.nsecs start_time 1778613935.865247073 secs.nsecs elapsed_time 167.612187675 secs.nsecs hits 75521 samples [pages] misses 5045 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75522 samples [pages] failed_to_fast_read 5045 samples [pages] readahead_pages 5044 samples [pages] 2 15 75521