== sanity test 101a: check read-ahead for random reads === 11:08:29 (1788793709) nreads: 10000 file size: 96MB 180.773118s, 3.62459MB/s osc.lustre-OST0000-osc-ffff88aac609d800.rpc_stats= snapshot_time: 1788793910.070870617 secs.nsecs start_time: 1788793711.875142111 secs.nsecs elapsed_time: 198.195728506 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 | 0 0 0 2: 1 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 8 0 0 | 0 0 0 16: 6532 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: 6544 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: 19 0 0 | 0 0 4 128: 32 0 1 | 0 0 4 256: 68 1 2 | 0 0 4 512: 131 2 4 | 0 0 4 1024: 249 3 7 | 1 4 8 2048: 558 8 16 | 2 8 16 4096: 1075 16 32 | 4 16 32 8192: 2163 33 65 | 8 32 64 16384: 2231 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: 2 0 0 | 0 0 0 4096: 855 13 13 | 0 0 0 8192: 3700 56 69 | 0 0 0 16384: 1871 28 98 | 0 0 0 32768: 258 3 102 | 9 36 36 65536: 13 0 102 | 15 60 96 131072: 0 0 102 | 1 4 100 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-ffff88aac609d800.rpc_stats= snapshot_time: 1788793910.071206173 secs.nsecs start_time: 1788793711.875176881 secs.nsecs elapsed_time: 198.196029292 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-ffff88aac609d800.read_ahead_stats= snapshot_time 1788793910.086468291 secs.nsecs start_time 1788793711.914423749 secs.nsecs elapsed_time 198.172044542 secs.nsecs hits 98016 samples [pages] misses 6544 samples [pages] readpage_not_consecutive 9990 samples [pages] zero_size_window 98018 samples [pages] failed_to_fast_read 6544 samples [pages] readahead_pages 6542 samples [pages] 1 15 98016