== sanity test 101a: check read-ahead for random reads === 02:28:51 (1778653731) nreads: 10000 file size: 96MB 140.889594s, 4.65159MB/s osc.lustre-OST0000-osc-ffff958183084000.rpc_stats= snapshot_time: 1778653885.470372315 secs.nsecs start_time: 1778653733.084688836 secs.nsecs elapsed_time: 152.385683479 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 | 2 7 7 2: 0 0 0 | 0 0 7 4: 3 0 0 | 0 0 7 8: 7 0 0 | 0 0 7 16: 6559 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6570 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 5 0 0 | 0 0 11 32: 7 0 0 | 0 0 11 64: 23 0 0 | 0 0 11 128: 30 0 1 | 0 0 11 256: 69 1 2 | 0 0 11 512: 131 1 4 | 0 0 11 1024: 265 4 8 | 1 3 14 2048: 547 8 16 | 2 7 22 4096: 1099 16 33 | 4 14 37 8192: 2156 32 65 | 8 29 66 16384: 2234 34 100 | 9 33 100 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: 1426 21 21 | 0 0 0 8192: 4383 66 88 | 2 7 7 16384: 892 13 102 | 0 0 7 32768: 23 0 102 | 22 81 88 65536: 0 0 102 | 3 11 100 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 osc.lustre-OST0001-osc-ffff958183084000.rpc_stats= snapshot_time: 1778653885.470511187 secs.nsecs start_time: 1778653733.084722145 secs.nsecs elapsed_time: 152.385789042 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 | 1 33 33 16384: 0 0 0 | 2 66 100 llite.lustre-ffff958183084000.read_ahead_stats= snapshot_time 1778653885.480548432 secs.nsecs start_time 1778653733.106912991 secs.nsecs elapsed_time 152.373635441 secs.nsecs hits 98402 samples [pages] misses 6570 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98403 samples [pages] failed_to_fast_read 6570 samples [pages] readahead_pages 6569 samples [pages] 2 15 98402