== sanity test 101a: check read-ahead for random reads === 10:13:05 (1782223985) nreads: 10000 file size: 96MB 139.827474s, 4.68692MB/s osc.lustre-OST0000-osc-ffff9a5284058800.rpc_stats= snapshot_time: 1782224142.293004704 secs.nsecs start_time: 1782223986.913748526 secs.nsecs elapsed_time: 155.379256178 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 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 | 1 33 33 8192: 0 0 0 | 1 33 66 16384: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff9a5284058800.rpc_stats= snapshot_time: 1782224142.293360782 secs.nsecs start_time: 1782223986.913781765 secs.nsecs elapsed_time: 155.379579017 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 1 1 2: 1 0 0 | 0 0 1 4: 1 0 0 | 0 0 1 8: 5 0 0 | 0 0 1 16: 5039 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5046 100 100 | 101 99 99 2: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 4 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 26 0 1 | 0 0 2 256: 53 1 2 | 1 0 3 512: 108 2 4 | 2 1 5 1024: 208 4 8 | 4 3 9 2048: 428 8 16 | 8 7 17 4096: 852 16 33 | 16 15 33 8192: 1673 33 66 | 32 31 64 16384: 1669 33 100 | 36 35 100 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: 612 12 12 | 1 0 0 8192: 2982 59 71 | 5 4 5 16384: 1303 25 97 | 51 50 55 32768: 246 4 101 | 35 34 90 65536: 21 0 102 | 11 10 100 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-ffff9a5284058800.read_ahead_stats= snapshot_time 1782224142.329031143 secs.nsecs start_time 1782223986.930338482 secs.nsecs elapsed_time 155.398692661 secs.nsecs hits 75591 samples [pages] misses 5046 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75591 samples [pages] failed_to_fast_read 5046 samples [pages] readahead_pages 5046 samples [pages] 1 15 75591