== sanity test 101a: check read-ahead for random reads === 02:34:27 (1772177667) nreads: 10000 file size: 96MB 149.384116s, 4.38708MB/s osc.lustre-OST0000-osc-ffff99970702e000.rpc_stats= snapshot_time: 1772177831.114748627 secs.nsecs start_time: 1772177668.635077382 secs.nsecs elapsed_time: 162.479671245 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 | 0 0 0 2: 0 0 0 | 0 0 0 4: 6 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 6590 99 100 | 0 0 0 32: 0 0 100 | 1 3 3 64: 0 0 100 | 1 3 6 128: 0 0 100 | 2 6 13 256: 0 0 100 | 0 0 13 512: 0 0 100 | 0 0 13 1024: 0 0 100 | 25 86 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6601 100 100 | 24 82 82 2: 0 0 100 | 2 6 89 3: 0 0 100 | 1 3 93 4: 0 0 100 | 2 6 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 6 0 0 | 0 0 3 32: 7 0 0 | 0 0 3 64: 22 0 0 | 0 0 3 128: 32 0 1 | 0 0 3 256: 72 1 2 | 0 0 3 512: 136 2 4 | 0 0 3 1024: 234 3 7 | 5 17 20 2048: 560 8 16 | 2 6 27 4096: 1109 16 33 | 4 13 41 8192: 2162 32 65 | 8 27 68 16384: 2257 34 100 | 9 31 100 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: 1162 17 17 | 0 0 0 8192: 4455 67 85 | 0 0 0 16384: 1088 16 101 | 1 3 3 32768: 53 0 102 | 13 44 48 65536: 0 0 102 | 15 51 100 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-ffff99970702e000.rpc_stats= snapshot_time: 1772177831.115950943 secs.nsecs start_time: 1772177668.635112395 secs.nsecs elapsed_time: 162.480838548 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 llite.lustre-ffff99970702e000.read_ahead_stats= snapshot_time 1772177831.130669635 secs.nsecs start_time 1772177668.645588373 secs.nsecs elapsed_time 162.485081262 secs.nsecs hits 98853 samples [pages] misses 6601 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98855 samples [pages] failed_to_fast_read 6601 samples [pages] readahead_pages 6599 samples [pages] 2 15 98853