== sanity test 101a: check read-ahead for random reads === 11:26:10 (1772468770) nreads: 10000 file size: 96MB 103.115225s, 6.35561MB/s osc.lustre-OST0000-osc-ffff96ab8445a800.rpc_stats= snapshot_time: 1772468885.278642486 secs.nsecs start_time: 1772468771.479120190 secs.nsecs elapsed_time: 113.799522296 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-ffff96ab8445a800.rpc_stats= snapshot_time: 1772468885.278693208 secs.nsecs start_time: 1772468771.479151846 secs.nsecs elapsed_time: 113.799541362 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: 1 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 7 0 0 | 0 0 0 16: 6506 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: 6515 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: 19 0 0 | 0 0 4 128: 31 0 1 | 0 0 4 256: 73 1 2 | 0 0 4 512: 134 2 4 | 0 0 4 1024: 258 3 8 | 1 4 8 2048: 568 8 16 | 2 8 16 4096: 1077 16 33 | 4 16 32 8192: 2160 33 66 | 8 32 64 16384: 2176 33 100 | 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: 142 2 2 | 0 0 0 4096: 3885 59 61 | 0 0 0 8192: 2529 38 100 | 0 0 0 16384: 114 1 102 | 4 16 16 32768: 0 0 102 | 20 80 96 65536: 0 0 102 | 1 4 100 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-ffff96ab8445a800.read_ahead_stats= snapshot_time 1772468885.285751003 secs.nsecs start_time 1772468771.484042169 secs.nsecs elapsed_time 113.801708834 secs.nsecs hits 97597 samples [pages] misses 6515 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97597 samples [pages] failed_to_fast_read 6515 samples [pages] readahead_pages 6515 samples [pages] 1 15 97597