== sanity test 101a: check read-ahead for random reads === 13:03:07 (1785949387) nreads: 10000 file size: 96MB 180.917094s, 2.42884MB/s osc.lustre-OST0000-osc-ffff98617c684800.rpc_stats= snapshot_time: 1785949597.140461995 secs.nsecs start_time: 1785949390.228100373 secs.nsecs elapsed_time: 206.912361622 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: 0 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4374 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: 4378 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: 4 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 12 0 0 | 0 0 4 128: 21 0 1 | 0 0 4 256: 43 0 2 | 0 0 4 512: 93 2 4 | 0 0 4 1024: 167 3 8 | 1 4 8 2048: 379 8 16 | 2 8 16 4096: 725 16 33 | 4 16 32 8192: 1430 32 65 | 8 32 64 16384: 1493 34 100 | 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: 0 0 0 | 0 0 0 4096: 483 11 11 | 0 0 0 8192: 1541 35 46 | 0 0 0 16384: 1626 37 83 | 0 0 0 32768: 680 15 98 | 3 12 12 65536: 149 3 102 | 14 56 68 131072: 2 0 102 | 8 32 100 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 osc.lustre-OST0001-osc-ffff98617c684800.rpc_stats= snapshot_time: 1785949597.140599713 secs.nsecs start_time: 1785949390.228133513 secs.nsecs elapsed_time: 206.912466200 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-ffff98617c684800.read_ahead_stats= snapshot_time 1785949597.161828512 secs.nsecs start_time 1785949390.290224980 secs.nsecs elapsed_time 206.871603532 secs.nsecs hits 65614 samples [pages] misses 4378 samples [pages] readpage_not_consecutive 6702 samples [pages] zero_size_window 65614 samples [pages] failed_to_fast_read 4378 samples [pages] readahead_pages 4378 samples [pages] 2 15 65614