== sanity test 101a: check read-ahead for random reads === 21:37:33 (1787794653) nreads: 10000 file size: 96MB 175.970901s, 3.72425MB/s osc.lustre-OST0000-osc-ffff8e1ed0579800.rpc_stats= snapshot_time: 1787794844.425943025 secs.nsecs start_time: 1787794654.456732705 secs.nsecs elapsed_time: 189.969210320 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: 2 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 6512 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: 6520 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: 29 0 1 | 0 0 4 256: 70 1 2 | 0 0 4 512: 131 2 4 | 0 0 4 1024: 259 3 8 | 1 4 8 2048: 546 8 16 | 2 8 16 4096: 1082 16 33 | 4 16 32 8192: 2165 33 66 | 8 32 64 16384: 2200 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: 1 0 0 | 0 0 0 4096: 940 14 14 | 0 0 0 8192: 3769 57 72 | 0 0 0 16384: 1710 26 98 | 0 0 0 32768: 241 3 102 | 15 60 60 65536: 14 0 102 | 10 40 100 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-ffff8e1ed0579800.rpc_stats= snapshot_time: 1787794844.426143726 secs.nsecs start_time: 1787794654.456773049 secs.nsecs elapsed_time: 189.969370677 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 1 33 33 16384: 0 0 0 | 2 66 100 llite.lustre-ffff8e1ed0579800.read_ahead_stats= snapshot_time 1787794844.439672931 secs.nsecs start_time 1787794654.467888455 secs.nsecs elapsed_time 189.971784476 secs.nsecs hits 97676 samples [pages] misses 6520 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97676 samples [pages] failed_to_fast_read 6520 samples [pages] readahead_pages 6520 samples [pages] 1 15 97676