== sanity test 101a: check read-ahead for random reads === 00:25:36 (1786076736) nreads: 10000 file size: 96MB 180.185434s, 3.06902MB/s osc.lustre-OST0000-osc-ffff9acdd02a4000.rpc_stats= snapshot_time: 1786076944.175423940 secs.nsecs start_time: 1786076739.016086170 secs.nsecs elapsed_time: 205.159337770 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: 4 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 4274 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 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4284 100 100 | 98 98 98 2: 0 0 100 | 2 2 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 3 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 14 0 0 | 0 0 1 128: 22 0 1 | 0 0 1 256: 45 1 2 | 1 1 2 512: 96 2 4 | 2 2 4 1024: 167 3 8 | 4 4 8 2048: 370 8 16 | 8 8 16 4096: 713 16 33 | 16 16 32 8192: 1428 33 66 | 32 32 64 16384: 1417 33 100 | 36 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: 29 0 0 | 0 0 0 8192: 1382 32 32 | 0 0 0 16384: 2189 51 84 | 17 17 17 32768: 723 16 100 | 56 56 73 65536: 61 1 102 | 25 25 98 131072: 0 0 102 | 3 3 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 osc.lustre-OST0001-osc-ffff9acdd02a4000.rpc_stats= snapshot_time: 1786076944.175589975 secs.nsecs start_time: 1786076739.016122756 secs.nsecs elapsed_time: 205.159467219 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-ffff9acdd02a4000.read_ahead_stats= snapshot_time 1786076944.204574085 secs.nsecs start_time 1786076739.043963839 secs.nsecs elapsed_time 205.160610246 secs.nsecs hits 64136 samples [pages] misses 4284 samples [pages] readpage_not_consecutive 8433 samples [pages] zero_size_window 64136 samples [pages] failed_to_fast_read 4284 samples [pages] readahead_pages 4284 samples [pages] 1 15 64136