== sanity test 101a: check read-ahead for random reads === 19:34:28 (1786750468) nreads: 10000 file size: 96MB 180.407730s, 3.28175MB/s osc.lustre-OST0000-osc-ffff9b32080de800.rpc_stats= snapshot_time: 1786750671.069494977 secs.nsecs start_time: 1786750470.602673824 secs.nsecs elapsed_time: 200.466821153 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: 2 0 0 | 0 0 0 2: 1 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 5931 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 1 3 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: 5938 99 99 | 25 96 96 2: 1 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 5 0 0 | 0 0 3 32: 7 0 0 | 0 0 3 64: 21 0 0 | 0 0 3 128: 18 0 0 | 1 3 7 256: 51 0 1 | 0 0 7 512: 108 1 3 | 0 0 7 1024: 234 3 7 | 1 3 11 2048: 507 8 16 | 2 7 19 4096: 986 16 32 | 4 15 34 8192: 1952 32 65 | 8 30 65 16384: 2046 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: 1 0 0 | 0 0 0 4096: 638 10 10 | 0 0 0 8192: 3312 55 66 | 0 0 0 16384: 1758 29 96 | 0 0 0 32768: 346 5 101 | 4 15 15 65536: 24 0 102 | 19 73 88 131072: 0 0 102 | 3 11 100 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-ffff9b32080de800.rpc_stats= snapshot_time: 1786750671.069631531 secs.nsecs start_time: 1786750470.602992924 secs.nsecs elapsed_time: 200.466638607 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-ffff9b32080de800.read_ahead_stats= snapshot_time 1786750671.081662027 secs.nsecs start_time 1786750470.625406026 secs.nsecs elapsed_time 200.456256001 secs.nsecs hits 88960 samples [pages] misses 5939 samples [pages] readpage_not_consecutive 9029 samples [pages] zero_size_window 88961 samples [pages] failed_to_fast_read 5939 samples [pages] readahead_pages 5937 samples [pages] 1 15 88960