== sanity test 101a: check read-ahead for random reads === 09:09:30 (1787749770) nreads: 10000 file size: 96MB 180.302631s, 2.60068MB/s osc.lustre-OST0000-osc-ffff933b081be800.rpc_stats= snapshot_time: 1787749975.144725520 secs.nsecs start_time: 1787749772.863736537 secs.nsecs elapsed_time: 202.280988983 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: 2 0 0 | 0 0 0 16: 4725 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: 4729 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 4 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 14 0 0 | 0 0 4 128: 22 0 1 | 0 0 4 256: 44 0 1 | 0 0 4 512: 98 2 4 | 0 0 4 1024: 189 3 8 | 1 4 8 2048: 407 8 16 | 2 8 16 4096: 802 16 33 | 4 16 32 8192: 1535 32 66 | 8 32 64 16384: 1604 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: 0 0 0 | 0 0 0 4096: 215 4 4 | 0 0 0 8192: 1842 38 43 | 0 0 0 16384: 2081 44 87 | 0 0 0 32768: 663 14 101 | 2 8 8 65536: 39 0 102 | 19 76 84 131072: 0 0 102 | 4 16 100 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-ffff933b081be800.rpc_stats= snapshot_time: 1787749975.144956839 secs.nsecs start_time: 1787749772.864212340 secs.nsecs elapsed_time: 202.280744499 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 llite.lustre-ffff933b081be800.read_ahead_stats= snapshot_time 1787749975.168554152 secs.nsecs start_time 1787749772.882339190 secs.nsecs elapsed_time 202.286214962 secs.nsecs hits 70864 samples [pages] misses 4729 samples [pages] readpage_not_consecutive 7151 samples [pages] zero_size_window 70864 samples [pages] failed_to_fast_read 4729 samples [pages] readahead_pages 4729 samples [pages] 1 15 70864