== sanity test 101a: check read-ahead for random reads === 10:37:44 (1788273464) nreads: 10000 file size: 96MB 180.056665s, 3.36021MB/s osc.lustre-OST0000-osc-ffff8c06f51d4000.rpc_stats= snapshot_time: 1788273661.121615948 secs.nsecs start_time: 1788273466.025634055 secs.nsecs elapsed_time: 195.095981893 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 | 1 50 50 16384: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff8c06f51d4000.rpc_stats= snapshot_time: 1788273661.121692334 secs.nsecs start_time: 1788273466.025667648 secs.nsecs elapsed_time: 195.096024686 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 7 7 2: 0 0 0 | 0 0 7 4: 3 0 0 | 0 0 7 8: 5 0 0 | 1 3 10 16: 6041 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: 6049 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: 5 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: 8 0 0 | 0 0 14 64: 20 0 0 | 0 0 14 128: 28 0 1 | 0 0 14 256: 62 1 2 | 0 0 14 512: 125 2 4 | 0 0 14 1024: 239 3 8 | 1 3 17 2048: 511 8 16 | 2 7 25 4096: 1009 16 33 | 4 14 39 8192: 1982 32 66 | 8 28 67 16384: 2055 33 100 | 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: 0 0 0 | 0 0 0 4096: 176 2 2 | 0 0 0 8192: 3496 57 60 | 1 3 3 16384: 2291 37 98 | 2 7 10 32768: 222 3 102 | 7 25 35 65536: 7 0 102 | 18 64 100 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 llite.lustre-ffff8c06f51d4000.read_ahead_stats= snapshot_time 1788273661.136785547 secs.nsecs start_time 1788273466.042276517 secs.nsecs elapsed_time 195.094509030 secs.nsecs hits 90610 samples [pages] misses 6049 samples [pages] readpage_not_consecutive 9226 samples [pages] zero_size_window 90610 samples [pages] failed_to_fast_read 6049 samples [pages] readahead_pages 6049 samples [pages] 3 15 90610