== sanity test 101a: check read-ahead for random reads === 14:27:17 (1767727637) nreads: 10000 file size: 96MB 107.945442s, 6.07122MB/s osc.lustre-OST0000-osc-ffff92e44647c000.rpc_stats= snapshot_time: 1767727755.824903074 secs.nsecs start_time: 1767727638.112952875 secs.nsecs elapsed_time: 117.711950199 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: 1 0 0 | 1 3 3 2: 0 0 0 | 0 0 3 4: 3 0 0 | 0 0 3 8: 4 0 0 | 0 0 3 16: 6517 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: 6525 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 5 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 19 0 0 | 0 0 7 128: 31 0 1 | 0 0 7 256: 72 1 2 | 0 0 7 512: 133 2 4 | 0 0 7 1024: 256 3 8 | 1 3 11 2048: 556 8 16 | 2 7 19 4096: 1070 16 33 | 4 15 34 8192: 2138 32 65 | 8 30 65 16384: 2231 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: 60 0 0 | 0 0 0 4096: 3913 59 60 | 0 0 0 8192: 2502 38 99 | 0 0 0 16384: 203 3 102 | 0 0 0 32768: 1 0 102 | 26 100 100 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-ffff92e44647c000.rpc_stats= snapshot_time: 1767727755.825035109 secs.nsecs start_time: 1767727638.112990718 secs.nsecs elapsed_time: 117.712044391 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 | 1 25 25 8192: 0 0 0 | 1 25 50 16384: 0 0 0 | 2 50 100 llite.lustre-ffff92e44647c000.read_ahead_stats= snapshot_time 1767727755.831289617 secs.nsecs start_time 1767727638.120377442 secs.nsecs elapsed_time 117.710912175 secs.nsecs hits 97749 samples [pages] misses 6525 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97750 samples [pages] failed_to_fast_read 6525 samples [pages] readahead_pages 6524 samples [pages] 3 15 97749