== sanity test 101a: check read-ahead for random reads === 09:15:32 (1789132532) nreads: 10000 file size: 96MB 180.257146s, 2.64133MB/s osc.lustre-OST0000-osc-ffff948eb90be000.rpc_stats= snapshot_time: 1789132736.096483270 secs.nsecs start_time: 1789132535.060036771 secs.nsecs elapsed_time: 201.036446499 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 | 0 0 0 2: 1 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 4810 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: 4814 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 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: 6 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 48 0 2 | 0 0 4 512: 100 2 4 | 0 0 4 1024: 189 3 8 | 1 4 8 2048: 417 8 16 | 2 8 16 4096: 811 16 33 | 4 16 32 8192: 1582 32 66 | 8 32 64 16384: 1615 33 100 | 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: 0 0 0 | 0 0 0 4096: 225 4 4 | 0 0 0 8192: 2069 42 47 | 0 0 0 16384: 1956 40 88 | 0 0 0 32768: 626 13 101 | 0 0 0 65536: 51 1 102 | 22 88 88 131072: 0 0 102 | 3 12 100 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-ffff948eb90be000.rpc_stats= snapshot_time: 1789132736.096637399 secs.nsecs start_time: 1789132535.061658011 secs.nsecs elapsed_time: 201.034979388 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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 | 1 100 100 llite.lustre-ffff948eb90be000.read_ahead_stats= snapshot_time 1789132736.120708217 secs.nsecs start_time 1789132535.080345801 secs.nsecs elapsed_time 201.040362416 secs.nsecs hits 72142 samples [pages] misses 4814 samples [pages] readpage_not_consecutive 7261 samples [pages] zero_size_window 72143 samples [pages] failed_to_fast_read 4814 samples [pages] readahead_pages 4813 samples [pages] 1 15 72142