== sanity test 101a: check read-ahead for random reads === 07:20:54 (1789125654) nreads: 10000 file size: 96MB 180.133025s, 3.35078MB/s osc.lustre-OST0000-osc-ffff8c5a67d66800.rpc_stats= snapshot_time: 1789125857.063876332 secs.nsecs start_time: 1789125656.843449932 secs.nsecs elapsed_time: 200.220426400 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: 2 0 0 | 2 7 7 2: 1 0 0 | 0 0 7 4: 3 0 0 | 0 0 7 8: 5 0 0 | 0 0 7 16: 6024 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6035 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 5 0 0 | 0 0 11 32: 8 0 0 | 0 0 11 64: 19 0 0 | 0 0 11 128: 28 0 1 | 0 0 11 256: 63 1 2 | 0 0 11 512: 125 2 4 | 0 0 11 1024: 228 3 7 | 1 3 14 2048: 510 8 16 | 2 7 22 4096: 990 16 32 | 4 14 37 8192: 1981 32 65 | 8 29 66 16384: 2072 34 100 | 9 33 100 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: 565 9 9 | 0 0 0 8192: 3402 56 65 | 1 3 3 16384: 1803 29 95 | 1 3 7 32768: 379 6 101 | 1 3 11 65536: 28 0 102 | 23 85 96 131072: 0 0 102 | 1 3 100 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-ffff8c5a67d66800.rpc_stats= snapshot_time: 1789125857.064023572 secs.nsecs start_time: 1789125656.843487210 secs.nsecs elapsed_time: 200.220536362 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 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 2 66 66 32768: 0 0 0 | 0 0 66 65536: 0 0 0 | 0 0 66 131072: 0 0 0 | 1 33 100 llite.lustre-ffff8c5a67d66800.read_ahead_stats= snapshot_time 1789125857.080353023 secs.nsecs start_time 1789125656.879013577 secs.nsecs elapsed_time 200.201339446 secs.nsecs hits 90352 samples [pages] misses 6035 samples [pages] readpage_not_consecutive 9205 samples [pages] zero_size_window 90354 samples [pages] failed_to_fast_read 6035 samples [pages] readahead_pages 6033 samples [pages] 1 15 90352