== sanity test 101a: check read-ahead for random reads === 02:33:04 (1769758384) nreads: 10000 file size: 96MB 133.948584s, 4.89262MB/s osc.lustre-OST0000-osc-ffff908b518a0000.rpc_stats= snapshot_time: 1769758530.391743830 secs.nsecs start_time: 1769758385.759923114 secs.nsecs elapsed_time: 144.631820716 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-ffff908b518a0000.rpc_stats= snapshot_time: 1769758530.391795909 secs.nsecs start_time: 1769758385.759953990 secs.nsecs elapsed_time: 144.631841919 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: 1 0 0 | 0 0 0 4: 5 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 6519 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: 6530 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: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 22 0 0 | 0 0 4 128: 29 0 1 | 0 0 4 256: 70 1 2 | 0 0 4 512: 132 2 4 | 0 0 4 1024: 265 4 8 | 1 4 8 2048: 545 8 16 | 2 8 16 4096: 1093 16 33 | 4 16 32 8192: 2157 33 66 | 8 32 64 16384: 2199 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: 6 0 0 | 0 0 0 4096: 1945 29 29 | 0 0 0 8192: 4061 62 92 | 0 0 0 16384: 647 9 101 | 2 8 8 32768: 26 0 102 | 20 80 88 65536: 0 0 102 | 3 12 100 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-ffff908b518a0000.read_ahead_stats= snapshot_time 1769758530.397980817 secs.nsecs start_time 1769758385.770240039 secs.nsecs elapsed_time 144.627740778 secs.nsecs hits 97796 samples [pages] misses 6530 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97796 samples [pages] failed_to_fast_read 6530 samples [pages] readahead_pages 6530 samples [pages] 1 15 97796