== sanity test 101a: check read-ahead for random reads === 03:52:18 (1788508338) nreads: 10000 file size: 96MB 180.141557s, 3.21311MB/s osc.lustre-OST0000-osc-ffff930505a70000.rpc_stats= snapshot_time: 1788508536.094527179 secs.nsecs start_time: 1788508340.273563644 secs.nsecs elapsed_time: 195.820963535 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 osc.lustre-OST0001-osc-ffff930505a70000.rpc_stats= snapshot_time: 1788508536.094616324 secs.nsecs start_time: 1788508340.273598892 secs.nsecs elapsed_time: 195.821017432 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 2: 0 0 0 | 0 0 0 4: 5 0 0 | 0 0 0 8: 8 0 0 | 0 0 0 16: 5777 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: 5790 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: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 17 0 0 | 0 0 4 128: 24 0 1 | 0 0 4 256: 62 1 2 | 0 0 4 512: 121 2 4 | 0 0 4 1024: 216 3 7 | 1 4 8 2048: 493 8 16 | 2 8 16 4096: 950 16 32 | 4 16 32 8192: 1912 33 65 | 8 32 64 16384: 1976 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: 0 0 0 | 0 0 0 4096: 296 5 5 | 0 0 0 8192: 3138 54 59 | 0 0 0 16384: 2102 36 95 | 0 0 0 32768: 373 6 102 | 9 36 36 65536: 17 0 102 | 16 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-ffff930505a70000.read_ahead_stats= snapshot_time 1788508536.131683309 secs.nsecs start_time 1788508340.310419299 secs.nsecs elapsed_time 195.821264010 secs.nsecs hits 86681 samples [pages] misses 5790 samples [pages] readpage_not_consecutive 8827 samples [pages] zero_size_window 86681 samples [pages] failed_to_fast_read 5790 samples [pages] readahead_pages 5790 samples [pages] 2 15 86681