== sanity test 101a: check read-ahead for random reads === 22:49:23 (1784083763) nreads: 10000 file size: 96MB 56.327297s, 11.6349MB/s osc.lustre-OST0000-osc-ffff9d171958d800.rpc_stats= snapshot_time: 1784083833.392259780 secs.nsecs start_time: 1784083764.053064806 secs.nsecs elapsed_time: 69.339194974 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 | 1 3 3 2: 2 0 0 | 0 0 3 4: 3 0 0 | 0 0 3 8: 9 0 0 | 0 0 3 16: 6421 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6436 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 5 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 22 0 0 | 0 0 7 128: 31 0 1 | 0 0 7 256: 72 1 2 | 0 0 7 512: 134 2 4 | 0 0 7 1024: 265 4 8 | 1 3 11 2048: 559 8 17 | 2 7 19 4096: 1070 16 33 | 4 15 34 8192: 2179 33 67 | 8 30 65 16384: 2088 32 100 | 9 34 100 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: 11 0 0 | 0 0 0 2048: 6329 98 98 | 0 0 0 4096: 243 3 102 | 1 3 3 8192: 5 0 102 | 5 19 23 16384: 1 0 102 | 11 42 65 32768: 0 0 102 | 9 34 100 65536: 0 0 102 | 0 0 100 131072: 0 0 102 | 0 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 osc.lustre-OST0001-osc-ffff9d171958d800.rpc_stats= snapshot_time: 1784083833.392382112 secs.nsecs start_time: 1784083764.053105531 secs.nsecs elapsed_time: 69.339276581 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 25 25 2: 0 0 0 | 2 50 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 2 50 50 8192: 0 0 0 | 2 50 100 llite.lustre-ffff9d171958d800.read_ahead_stats= snapshot_time 1784083833.398267484 secs.nsecs start_time 1784083764.058763005 secs.nsecs elapsed_time 69.339504479 secs.nsecs hits 96365 samples [pages] misses 6436 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96366 samples [pages] failed_to_fast_read 6436 samples [pages] readahead_pages 6435 samples [pages] 1 15 96365