== sanity test 101a: check read-ahead for random reads === 09:39:55 (1789133995) nreads: 10000 file size: 96MB 180.222160s, 2.60512MB/s osc.lustre-OST0000-osc-ffff93de3be76800.rpc_stats= snapshot_time: 1789134199.100209271 secs.nsecs start_time: 1789133998.125396746 secs.nsecs elapsed_time: 200.974812525 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: 2 0 0 | 1 3 3 2: 1 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 4731 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4734 100 100 | 25 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 4 0 0 | 0 0 7 32: 6 0 0 | 0 0 7 64: 14 0 0 | 0 0 7 128: 22 0 1 | 0 0 7 256: 45 0 2 | 0 0 7 512: 98 2 4 | 0 0 7 1024: 190 4 8 | 1 3 11 2048: 408 8 16 | 2 7 19 4096: 801 16 33 | 4 15 34 8192: 1532 32 65 | 8 30 65 16384: 1610 34 100 | 9 34 100 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: 211 4 4 | 0 0 0 8192: 1818 38 42 | 0 0 0 16384: 2086 44 86 | 0 0 0 32768: 670 14 101 | 0 0 0 65536: 59 1 102 | 15 57 57 131072: 0 0 102 | 11 42 100 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-ffff93de3be76800.rpc_stats= snapshot_time: 1789134199.100363949 secs.nsecs start_time: 1789133998.125418541 secs.nsecs elapsed_time: 200.974945408 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 0 0 0 32768: 0 0 0 | 3 75 75 65536: 0 0 0 | 1 25 100 llite.lustre-ffff93de3be76800.read_ahead_stats= snapshot_time 1789134199.114018395 secs.nsecs start_time 1789133998.147716460 secs.nsecs elapsed_time 200.966301935 secs.nsecs hits 70960 samples [pages] misses 4734 samples [pages] readpage_not_consecutive 7160 samples [pages] zero_size_window 70962 samples [pages] failed_to_fast_read 4734 samples [pages] readahead_pages 4732 samples [pages] 1 15 70960