== sanity test 101a: check read-ahead for random reads === 23:44:07 (1781235847) nreads: 10000 file size: 96MB 180.048820s, 2.92903MB/s osc.lustre-OST0000-osc-ffff9f90c462c000.rpc_stats= snapshot_time: 1781236047.134618225 secs.nsecs start_time: 1781235849.483248467 secs.nsecs elapsed_time: 197.651369758 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-ffff9f90c462c000.rpc_stats= snapshot_time: 1781236047.134715630 secs.nsecs start_time: 1781235849.483315256 secs.nsecs elapsed_time: 197.651400374 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: 3 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 5296 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: 5305 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: 4 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 53 0 2 | 0 0 4 512: 114 2 4 | 0 0 4 1024: 203 3 7 | 1 4 8 2048: 456 8 16 | 2 8 16 4096: 876 16 33 | 4 16 32 8192: 1743 32 65 | 8 32 64 16384: 1806 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: 0 0 0 | 0 0 0 4096: 97 1 1 | 0 0 0 8192: 2413 45 47 | 0 0 0 16384: 2471 46 93 | 0 0 0 32768: 436 8 102 | 2 8 8 65536: 13 0 102 | 21 84 92 131072: 0 0 102 | 2 8 100 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-ffff9f90c462c000.read_ahead_stats= snapshot_time 1781236047.156063149 secs.nsecs start_time 1781235849.499756974 secs.nsecs elapsed_time 197.656306175 secs.nsecs hits 79449 samples [pages] misses 5305 samples [pages] readpage_not_consecutive 8042 samples [pages] zero_size_window 79449 samples [pages] failed_to_fast_read 5305 samples [pages] readahead_pages 5305 samples [pages] 1 15 79449