== sanity test 101a: check read-ahead for random reads === 05:07:35 (1787389655) nreads: 10000 file size: 96MB 180.598960s, 3.11316MB/s osc.lustre-OST0000-osc-ffff9b014316d000.rpc_stats= snapshot_time: 1787389861.157813501 secs.nsecs start_time: 1787389657.650166526 secs.nsecs elapsed_time: 203.507646975 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 1 100 100 osc.lustre-OST0001-osc-ffff9b014316d000.rpc_stats= snapshot_time: 1787389861.157882084 secs.nsecs start_time: 1787389657.650198778 secs.nsecs elapsed_time: 203.507683306 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: 1 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 4353 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: 4359 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: 3 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 14 0 0 | 0 0 1 128: 22 0 1 | 0 0 1 256: 46 1 2 | 1 1 2 512: 96 2 4 | 2 2 4 1024: 173 3 8 | 4 4 8 2048: 373 8 16 | 8 8 16 4096: 730 16 33 | 16 16 32 8192: 1456 33 67 | 32 32 64 16384: 1437 32 100 | 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: 48 1 1 | 0 0 0 8192: 1305 29 31 | 0 0 0 16384: 2288 52 83 | 16 16 16 32768: 752 17 100 | 62 62 78 65536: 68 1 102 | 20 20 98 131072: 0 0 102 | 3 3 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 llite.lustre-ffff9b014316d000.read_ahead_stats= snapshot_time 1787389861.177356100 secs.nsecs start_time 1787389657.674229835 secs.nsecs elapsed_time 203.503126265 secs.nsecs hits 65280 samples [pages] misses 4359 samples [pages] readpage_not_consecutive 8574 samples [pages] zero_size_window 65281 samples [pages] failed_to_fast_read 4359 samples [pages] readahead_pages 4358 samples [pages] 1 15 65280