== sanity test 101a: check read-ahead for random reads === 19:45:41 (1788651941) nreads: 10000 file size: 96MB 180.431203s, 3.14802MB/s osc.lustre-OST0000-osc-ffff950002a90800.rpc_stats= snapshot_time: 1788652139.097673209 secs.nsecs start_time: 1788651942.496024839 secs.nsecs elapsed_time: 196.601648370 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-ffff950002a90800.rpc_stats= snapshot_time: 1788652139.097742915 secs.nsecs start_time: 1788651942.496056592 secs.nsecs elapsed_time: 196.601686323 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: 2 0 0 | 0 0 0 16: 5701 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: 5706 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 17 0 0 | 0 0 4 128: 24 0 1 | 0 0 4 256: 61 1 2 | 0 0 4 512: 120 2 4 | 0 0 4 1024: 214 3 7 | 1 4 8 2048: 489 8 16 | 2 8 16 4096: 933 16 32 | 4 16 32 8192: 1879 32 65 | 8 32 64 16384: 1950 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: 1 0 0 | 0 0 0 4096: 598 10 10 | 0 0 0 8192: 2754 48 58 | 0 0 0 16384: 2072 36 95 | 0 0 0 32768: 400 7 102 | 7 28 28 65536: 16 0 102 | 18 72 100 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-ffff950002a90800.read_ahead_stats= snapshot_time 1788652139.107698155 secs.nsecs start_time 1788651942.510117464 secs.nsecs elapsed_time 196.597580691 secs.nsecs hits 85485 samples [pages] misses 5706 samples [pages] readpage_not_consecutive 8662 samples [pages] zero_size_window 85486 samples [pages] failed_to_fast_read 5706 samples [pages] readahead_pages 5705 samples [pages] 1 15 85485