== sanity test 101a: check read-ahead for random reads === 03:02:13 (1788764533) nreads: 10000 file size: 96MB 180.530625s, 3.19239MB/s osc.lustre-OST0000-osc-ffff9d87c893b800.rpc_stats= snapshot_time: 1788764730.080729736 secs.nsecs start_time: 1788764535.284511513 secs.nsecs elapsed_time: 194.796218223 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 1 50 50 32768: 0 0 0 | 0 0 50 65536: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff9d87c893b800.rpc_stats= snapshot_time: 1788764730.080883197 secs.nsecs start_time: 1788764535.284557178 secs.nsecs elapsed_time: 194.796326019 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 7 7 2: 2 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 5 0 0 | 1 3 10 16: 5795 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5805 100 100 | 25 89 89 2: 0 0 100 | 1 3 92 3: 0 0 100 | 1 3 96 4: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 20 0 0 | 0 0 14 128: 25 0 1 | 0 0 14 256: 59 1 2 | 0 0 14 512: 124 2 4 | 0 0 14 1024: 221 3 7 | 1 3 17 2048: 489 8 16 | 2 7 25 4096: 966 16 33 | 4 14 39 8192: 1888 32 65 | 8 28 67 16384: 1998 34 100 | 9 32 100 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: 448 7 7 | 0 0 0 8192: 3137 54 61 | 0 0 0 16384: 1885 32 94 | 1 3 3 32768: 440 7 101 | 8 28 32 65536: 31 0 102 | 18 64 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 llite.lustre-ffff9d87c893b800.read_ahead_stats= snapshot_time 1788764730.092592967 secs.nsecs start_time 1788764535.303116458 secs.nsecs elapsed_time 194.789476509 secs.nsecs hits 86935 samples [pages] misses 5805 samples [pages] readpage_not_consecutive 8789 samples [pages] zero_size_window 86936 samples [pages] failed_to_fast_read 5805 samples [pages] readahead_pages 5804 samples [pages] 1 15 86935