== sanity test 101a: check read-ahead for random reads === 07:46:33 (1786016793) nreads: 10000 file size: 96MB 162.743967s, 4.02694MB/s osc.lustre-OST0000-osc-ffff963a20637000.rpc_stats= snapshot_time: 1786016978.676674105 secs.nsecs start_time: 1786016795.913912980 secs.nsecs elapsed_time: 182.762761125 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 osc.lustre-OST0001-osc-ffff963a20637000.rpc_stats= snapshot_time: 1786016978.676757334 secs.nsecs start_time: 1786016795.913944203 secs.nsecs elapsed_time: 182.762813131 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: 5 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 5048 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: 5058 100 100 | 97 97 97 2: 0 0 100 | 3 3 100 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: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 26 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 108 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 426 8 16 | 8 8 16 4096: 854 16 33 | 16 16 32 8192: 1678 33 66 | 32 32 64 16384: 1677 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: 1 0 0 | 0 0 0 4096: 243 4 4 | 0 0 0 8192: 2771 54 59 | 0 0 0 16384: 1743 34 94 | 20 20 20 32768: 394 7 101 | 62 62 82 65536: 24 0 102 | 16 16 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 llite.lustre-ffff963a20637000.read_ahead_stats= snapshot_time 1786016978.698769755 secs.nsecs start_time 1786016795.927314448 secs.nsecs elapsed_time 182.771455307 secs.nsecs hits 75737 samples [pages] misses 5058 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75738 samples [pages] failed_to_fast_read 5058 samples [pages] readahead_pages 5057 samples [pages] 1 15 75737