== sanity test 101a: check read-ahead for random reads === 03:22:40 (1787383360) nreads: 10000 file size: 96MB 166.274699s, 3.94143MB/s osc.lustre-OST0000-osc-ffff8a32867df800.rpc_stats= snapshot_time: 1787383548.394353074 secs.nsecs start_time: 1787383362.429264770 secs.nsecs elapsed_time: 185.965088304 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 | 3 100 100 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 | 0 0 66 32768: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff8a32867df800.rpc_stats= snapshot_time: 1787383548.394449874 secs.nsecs start_time: 1787383362.429290384 secs.nsecs elapsed_time: 185.965159490 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 | 2 1 1 2: 2 0 0 | 0 0 1 4: 1 0 0 | 0 0 1 8: 4 0 0 | 0 0 1 16: 5037 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: 5045 100 100 | 99 97 97 2: 0 0 100 | 3 2 100 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: 106 2 4 | 2 1 5 1024: 208 4 8 | 4 3 9 2048: 429 8 16 | 8 7 17 4096: 851 16 33 | 16 15 33 8192: 1673 33 66 | 32 31 64 16384: 1670 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: 161 3 3 | 0 0 0 8192: 2708 53 56 | 0 0 0 16384: 1918 38 94 | 39 38 38 32768: 356 7 101 | 58 56 95 65536: 20 0 102 | 5 4 100 131072: 0 0 102 | 1 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-ffff8a32867df800.read_ahead_stats= snapshot_time 1787383548.411085634 secs.nsecs start_time 1787383362.467974204 secs.nsecs elapsed_time 185.943111430 secs.nsecs hits 75561 samples [pages] misses 5045 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75562 samples [pages] failed_to_fast_read 5045 samples [pages] readahead_pages 5044 samples [pages] 1 15 75561