== sanity test 101a: check read-ahead for random reads === 18:17:18 (1775168238) nreads: 10000 file size: 96MB 130.491423s, 5.02225MB/s osc.lustre-OST0000-osc-ffff9fd4d187c000.rpc_stats= snapshot_time: 1775168380.740712339 secs.nsecs start_time: 1775168239.770951652 secs.nsecs elapsed_time: 140.969760687 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 | 1 3 3 2: 2 0 0 | 0 0 3 4: 7 0 0 | 0 0 3 8: 5 0 0 | 0 0 3 16: 6529 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6543 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 6 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 19 0 0 | 0 0 7 128: 32 0 1 | 0 0 7 256: 68 1 2 | 0 0 7 512: 131 2 4 | 0 0 7 1024: 250 3 7 | 1 3 11 2048: 559 8 16 | 2 7 19 4096: 1082 16 33 | 4 15 34 8192: 2178 33 66 | 8 30 65 16384: 2205 33 100 | 9 34 100 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: 25 0 0 | 0 0 0 4096: 1773 27 27 | 1 3 3 8192: 4236 64 92 | 0 0 3 16384: 653 9 102 | 7 26 30 32768: 11 0 102 | 18 69 100 65536: 0 0 102 | 0 0 100 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-ffff9fd4d187c000.rpc_stats= snapshot_time: 1775168380.740860489 secs.nsecs start_time: 1775168239.770998453 secs.nsecs elapsed_time: 140.969862036 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 2 50 50 8192: 0 0 0 | 2 50 100 llite.lustre-ffff9fd4d187c000.read_ahead_stats= snapshot_time 1775168380.754108231 secs.nsecs start_time 1775168239.780023637 secs.nsecs elapsed_time 140.974084594 secs.nsecs hits 97932 samples [pages] misses 6543 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97932 samples [pages] failed_to_fast_read 6543 samples [pages] readahead_pages 6543 samples [pages] 1 15 97932