== sanity test 101a: check read-ahead for random reads === 08:40:43 (1788871243) nreads: 10000 file size: 96MB 150.466682s, 4.35552MB/s osc.lustre-OST0000-osc-ffff9becd259b800.rpc_stats= snapshot_time: 1788871413.819340597 secs.nsecs start_time: 1788871245.660267182 secs.nsecs elapsed_time: 168.159073415 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-ffff9becd259b800.rpc_stats= snapshot_time: 1788871413.819413839 secs.nsecs start_time: 1788871245.660301062 secs.nsecs elapsed_time: 168.159112777 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: 3 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5045 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 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5051 100 100 | 97 97 97 2: 0 0 100 | 3 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 26 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 428 8 16 | 8 8 16 4096: 852 16 33 | 16 16 32 8192: 1675 33 66 | 32 32 64 16384: 1674 33 100 | 36 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: 373 7 7 | 0 0 0 8192: 2878 56 64 | 5 5 5 16384: 1666 32 97 | 34 34 39 32768: 237 4 102 | 52 52 91 65536: 15 0 102 | 8 8 99 131072: 0 0 102 | 2 2 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 llite.lustre-ffff9becd259b800.read_ahead_stats= snapshot_time 1788871413.832661929 secs.nsecs start_time 1788871245.703145990 secs.nsecs elapsed_time 168.129515939 secs.nsecs hits 75664 samples [pages] misses 5051 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75664 samples [pages] failed_to_fast_read 5051 samples [pages] readahead_pages 5051 samples [pages] 1 15 75664