== sanity test 101a: check read-ahead for random reads === 10:44:12 (1790001852) nreads: 10000 file size: 96MB 180.151246s, 2.99721MB/s osc.lustre-OST0000-osc-ffff8e4351906800.rpc_stats= snapshot_time: 1790002054.068543015 secs.nsecs start_time: 1790001854.185065115 secs.nsecs elapsed_time: 199.883477900 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: 4 0 0 | 0 0 0 4: 3 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5386 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: 5397 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 4 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 54 1 2 | 0 0 4 512: 114 2 4 | 0 0 4 1024: 199 3 7 | 1 4 8 2048: 465 8 16 | 2 8 16 4096: 881 16 32 | 4 16 32 8192: 1771 32 65 | 8 32 64 16384: 1858 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: 1 0 0 | 0 0 0 4096: 357 6 6 | 0 0 0 8192: 2627 48 55 | 0 0 0 16384: 1943 36 91 | 0 0 0 32768: 549 10 101 | 6 24 24 65536: 47 0 102 | 16 64 88 131072: 0 0 102 | 2 8 96 262144: 0 0 102 | 1 4 100 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-ffff8e4351906800.rpc_stats= snapshot_time: 1790002054.068920873 secs.nsecs start_time: 1790001854.185099769 secs.nsecs elapsed_time: 199.883821104 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-ffff8e4351906800.read_ahead_stats= snapshot_time 1790002054.082969795 secs.nsecs start_time 1790001854.206346090 secs.nsecs elapsed_time 199.876623705 secs.nsecs hits 80769 samples [pages] misses 5397 samples [pages] readpage_not_consecutive 8234 samples [pages] zero_size_window 80771 samples [pages] failed_to_fast_read 5397 samples [pages] readahead_pages 5395 samples [pages] 1 15 80769