== sanity test 101a: check read-ahead for random reads === 18:31:21 (1784413881) nreads: 10000 file size: 96MB 57.796837s, 11.339MB/s osc.lustre-OST0000-osc-ffff9a99841bd800.rpc_stats= snapshot_time: 1784413950.615738644 secs.nsecs start_time: 1784413881.607704116 secs.nsecs elapsed_time: 69.008034528 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 | 2 100 100 osc.lustre-OST0001-osc-ffff9a99841bd800.rpc_stats= snapshot_time: 1784413950.615844834 secs.nsecs start_time: 1784413881.607750045 secs.nsecs elapsed_time: 69.008094789 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: 6 0 0 | 0 0 7 8: 4 0 0 | 1 3 10 16: 6405 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: 6417 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: 8 0 0 | 0 0 14 64: 20 0 0 | 0 0 14 128: 29 0 1 | 0 0 14 256: 70 1 2 | 0 0 14 512: 133 2 4 | 0 0 14 1024: 262 4 8 | 1 3 17 2048: 548 8 16 | 2 7 25 4096: 1086 16 33 | 4 14 39 8192: 2154 33 67 | 8 28 67 16384: 2097 32 100 | 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: 41 0 0 | 0 0 0 2048: 6053 94 94 | 2 7 7 4096: 471 7 102 | 1 3 10 8192: 3 0 102 | 5 17 28 16384: 0 0 102 | 10 35 64 32768: 1 0 102 | 10 35 100 65536: 0 0 102 | 0 0 100 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-ffff9a99841bd800.read_ahead_stats= snapshot_time 1784413950.622326809 secs.nsecs start_time 1784413881.615061326 secs.nsecs elapsed_time 69.007265483 secs.nsecs hits 96099 samples [pages] misses 6417 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96100 samples [pages] failed_to_fast_read 6417 samples [pages] readahead_pages 6416 samples [pages] 1 15 96099