== sanity test 101a: check read-ahead for random reads === 10:03:15 (1787061795) nreads: 10000 file size: 96MB 57.823638s, 11.3338MB/s osc.lustre-OST0000-osc-ffff89e69943b800.rpc_stats= snapshot_time: 1787061864.196384720 secs.nsecs start_time: 1787061795.992822550 secs.nsecs elapsed_time: 68.203562170 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 | 1 3 3 2: 2 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 3 0 0 | 0 0 3 16: 6415 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: 6420 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 6 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 21 0 0 | 0 0 7 128: 34 0 1 | 0 0 7 256: 70 1 2 | 0 0 7 512: 132 2 4 | 0 0 7 1024: 263 4 8 | 1 3 11 2048: 565 8 17 | 2 7 19 4096: 1099 17 34 | 4 15 34 8192: 2204 34 68 | 8 30 65 16384: 2014 31 100 | 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: 15 0 0 | 0 0 0 2048: 6298 98 98 | 0 0 0 4096: 257 4 102 | 1 3 3 8192: 3 0 102 | 10 38 42 16384: 0 0 102 | 15 57 100 32768: 0 0 102 | 0 0 100 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-ffff89e69943b800.rpc_stats= snapshot_time: 1787061864.196542287 secs.nsecs start_time: 1787061795.992856205 secs.nsecs elapsed_time: 68.203686082 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 | 2 50 50 2: 0 0 0 | 1 25 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 | 2 50 50 4096: 0 0 0 | 2 50 100 llite.lustre-ffff89e69943b800.read_ahead_stats= snapshot_time 1787061864.202462329 secs.nsecs start_time 1787061795.999297153 secs.nsecs elapsed_time 68.203165176 secs.nsecs hits 96203 samples [pages] misses 6420 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96203 samples [pages] failed_to_fast_read 6420 samples [pages] readahead_pages 6420 samples [pages] 1 15 96203