== sanity test 101a: check read-ahead for random reads === 16:29:49 (1790972989) nreads: 10000 file size: 96MB 180.904704s, 2.7699MB/s osc.lustre-OST0000-osc-ffff9c6cc3633800.rpc_stats= snapshot_time: 1790973190.156017425 secs.nsecs start_time: 1790972991.338756311 secs.nsecs elapsed_time: 198.817261114 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 2 100 100 osc.lustre-OST0001-osc-ffff9c6cc3633800.rpc_stats= snapshot_time: 1790973190.157043280 secs.nsecs start_time: 1790972991.338788249 secs.nsecs elapsed_time: 198.818255031 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: 1 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 3 0 0 | 1 3 10 16: 5029 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5034 100 100 | 26 92 92 2: 0 0 100 | 1 3 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 6 0 0 | 0 0 14 64: 13 0 0 | 0 0 14 128: 21 0 0 | 0 0 14 256: 53 1 2 | 0 0 14 512: 106 2 4 | 0 0 14 1024: 186 3 7 | 1 3 17 2048: 435 8 16 | 2 7 25 4096: 838 16 33 | 4 14 39 8192: 1631 32 65 | 8 28 67 16384: 1735 34 100 | 9 32 100 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: 186 3 3 | 0 0 0 8192: 2066 41 44 | 0 0 0 16384: 2268 45 89 | 2 7 7 32768: 588 11 101 | 3 10 17 65536: 44 0 102 | 19 67 85 131072: 1 0 102 | 4 14 100 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-ffff9c6cc3633800.read_ahead_stats= snapshot_time 1790973190.195125700 secs.nsecs start_time 1790972991.359323341 secs.nsecs elapsed_time 198.835802359 secs.nsecs hits 75428 samples [pages] misses 5034 samples [pages] readpage_not_consecutive 7642 samples [pages] zero_size_window 75429 samples [pages] failed_to_fast_read 5034 samples [pages] readahead_pages 5033 samples [pages] 1 15 75428