== sanity test 101a: check read-ahead for random reads === 08:03:59 (1786017839) nreads: 10000 file size: 96MB 180.946132s, 2.12892MB/s osc.lustre-OST0000-osc-ffff9e4a18066800.rpc_stats= snapshot_time: 1786018047.182777607 secs.nsecs start_time: 1786017842.134576807 secs.nsecs elapsed_time: 205.048200800 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: 1 0 0 | 0 0 3 4: 2 0 0 | 0 0 3 8: 1 0 0 | 0 0 3 16: 3899 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: 3903 100 100 | 25 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 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: 3 0 0 | 0 0 7 32: 5 0 0 | 0 0 7 64: 13 0 0 | 0 0 7 128: 19 0 1 | 0 0 7 256: 36 0 2 | 0 0 7 512: 84 2 4 | 0 0 7 1024: 151 3 8 | 1 3 11 2048: 332 8 16 | 2 7 19 4096: 643 16 33 | 4 15 34 8192: 1252 32 65 | 8 30 65 16384: 1362 34 100 | 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: 0 0 0 | 0 0 0 4096: 244 6 6 | 0 0 0 8192: 1289 33 39 | 0 0 0 16384: 1507 38 77 | 1 3 3 32768: 783 20 97 | 0 0 3 65536: 166 4 102 | 20 76 80 131072: 5 0 102 | 5 19 100 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-ffff9e4a18066800.rpc_stats= snapshot_time: 1786018047.182909354 secs.nsecs start_time: 1786017842.134627714 secs.nsecs elapsed_time: 205.048281640 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 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 3 75 75 32768: 0 0 0 | 0 0 75 65536: 0 0 0 | 0 0 75 131072: 0 0 0 | 1 25 100 llite.lustre-ffff9e4a18066800.read_ahead_stats= snapshot_time 1786018047.240807433 secs.nsecs start_time 1786017842.172332469 secs.nsecs elapsed_time 205.068474964 secs.nsecs hits 58463 samples [pages] misses 3903 samples [pages] readpage_not_consecutive 5875 samples [pages] zero_size_window 58463 samples [pages] failed_to_fast_read 3903 samples [pages] readahead_pages 3903 samples [pages] 1 15 58463