== sanity test 101a: check read-ahead for random reads === 04:37:13 (1788511033) nreads: 10000 file size: 96MB 180.348217s, 3.09387MB/s osc.lustre-OST0000-osc-ffff9d243e49e000.rpc_stats= snapshot_time: 1788511234.108916691 secs.nsecs start_time: 1788511035.095729088 secs.nsecs elapsed_time: 199.013187603 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: 3 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 5585 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: 5592 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 8 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 24 0 1 | 0 0 4 256: 60 1 2 | 0 0 4 512: 118 2 4 | 0 0 4 1024: 204 3 7 | 1 4 8 2048: 482 8 16 | 2 8 16 4096: 916 16 32 | 4 16 32 8192: 1841 32 65 | 8 32 64 16384: 1914 34 100 | 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: 220 3 3 | 0 0 0 8192: 2831 50 54 | 0 0 0 16384: 2259 40 94 | 0 0 0 32768: 399 7 102 | 6 24 24 65536: 15 0 102 | 17 68 92 131072: 0 0 102 | 2 8 100 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-ffff9d243e49e000.rpc_stats= snapshot_time: 1788511234.109048613 secs.nsecs start_time: 1788511035.095761316 secs.nsecs elapsed_time: 199.013287297 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 llite.lustre-ffff9d243e49e000.read_ahead_stats= snapshot_time 1788511234.129943694 secs.nsecs start_time 1788511035.131998862 secs.nsecs elapsed_time 198.997944832 secs.nsecs hits 83778 samples [pages] misses 5592 samples [pages] readpage_not_consecutive 8509 samples [pages] zero_size_window 83778 samples [pages] failed_to_fast_read 5592 samples [pages] readahead_pages 5592 samples [pages] 1 15 83778