== sanity test 101a: check read-ahead for random reads === 12:32:25 (1761237145) nreads: 10000 file size: 96MB 157.137203s, 4.17062MB/s osc.lustre-OST0000-osc-ffff91f909565000.rpc_stats= snapshot_time: 1761237316.972304420 secs.nsecs start_time: 1761237146.523776114 secs.nsecs elapsed_time: 170.448528306 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 2: 1 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 6524 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6514 99 99 | 25 100 100 2: 16 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 22 0 0 | 0 0 4 128: 31 0 1 | 0 0 4 256: 67 1 2 | 0 0 4 512: 132 2 4 | 0 0 4 1024: 261 3 8 | 1 4 8 2048: 547 8 16 | 2 8 16 4096: 1084 16 33 | 4 16 32 8192: 2132 32 65 | 8 32 64 16384: 2238 34 100 | 9 36 100 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: 704 10 10 | 0 0 0 8192: 4264 65 76 | 0 0 0 16384: 1633 25 101 | 0 0 0 32768: 80 1 102 | 9 36 36 65536: 2 0 102 | 15 60 96 131072: 0 0 102 | 1 4 100 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-ffff91f909565000.rpc_stats= snapshot_time: 1761237316.972429715 secs.nsecs start_time: 1761237146.523889702 secs.nsecs elapsed_time: 170.448540013 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-ffff91f909565000.read_ahead_stats= snapshot_time 1761237316.981833766 secs.nsecs start_time 1761237146.537789614 secs.nsecs elapsed_time 170.444044152 secs.nsecs hits 97864 samples [pages] misses 6530 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97864 samples [pages] failed_to_fast_read 6530 samples [pages] readahead_pages 6530 samples [pages] 1 15 97864