== sanity test 101a: check read-ahead for random reads === 07:27:34 (1787743654) nreads: 10000 file size: 96MB 180.915274s, 3.40947MB/s osc.lustre-OST0000-osc-ffff9d0c832af800.rpc_stats= snapshot_time: 1787743858.245065246 secs.nsecs start_time: 1787743656.101923936 secs.nsecs elapsed_time: 202.143141310 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-ffff9d0c832af800.rpc_stats= snapshot_time: 1787743858.245138725 secs.nsecs start_time: 1787743656.101955205 secs.nsecs elapsed_time: 202.143183520 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: 0 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 11 0 0 | 0 0 0 16: 6145 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: 6160 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 6 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 30 0 1 | 0 0 4 256: 66 1 2 | 0 0 4 512: 125 2 4 | 0 0 4 1024: 235 3 8 | 1 4 8 2048: 525 8 16 | 2 8 16 4096: 1017 16 33 | 4 16 32 8192: 2029 32 65 | 8 32 64 16384: 2095 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: 2 0 0 | 0 0 0 4096: 782 12 12 | 0 0 0 8192: 3379 54 67 | 0 0 0 16384: 1680 27 94 | 0 0 0 32768: 422 6 101 | 2 8 8 65536: 40 0 102 | 18 72 80 131072: 0 0 102 | 5 20 100 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-ffff9d0c832af800.read_ahead_stats= snapshot_time 1787743858.354703028 secs.nsecs start_time 1787743656.124965256 secs.nsecs elapsed_time 202.229737772 secs.nsecs hits 92196 samples [pages] misses 6160 samples [pages] readpage_not_consecutive 9405 samples [pages] zero_size_window 92197 samples [pages] failed_to_fast_read 6160 samples [pages] readahead_pages 6158 samples [pages] 2 15 92196