== sanity test 101a: check read-ahead for random reads === 01:59:57 (1785391197) nreads: 10000 file size: 96MB 180.682298s, 1.92384MB/s osc.lustre-OST0000-osc-ffff9e3c49a12800.rpc_stats= snapshot_time: 1785391406.113475823 secs.nsecs start_time: 1785391199.647123299 secs.nsecs elapsed_time: 206.466352524 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 | 2 7 7 2: 0 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 3 0 0 | 0 0 7 16: 3512 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 3516 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 2 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 4 0 0 | 0 0 11 32: 4 0 0 | 0 0 11 64: 12 0 0 | 0 0 11 128: 18 0 1 | 0 0 11 256: 35 0 2 | 0 0 11 512: 74 2 4 | 0 0 11 1024: 134 3 8 | 1 3 14 2048: 303 8 16 | 2 7 22 4096: 576 16 33 | 4 14 37 8192: 1144 32 65 | 8 29 66 16384: 1210 34 100 | 9 33 100 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: 182 5 5 | 0 0 0 8192: 934 26 31 | 0 0 0 16384: 1543 43 75 | 1 3 3 32768: 764 21 97 | 2 7 11 65536: 168 4 102 | 22 81 92 131072: 5 0 102 | 2 7 100 262144: 0 0 102 | 0 0 100 524288: 0 0 102 | 0 0 100 1048576: 1 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-ffff9e3c49a12800.rpc_stats= snapshot_time: 1785391406.113619685 secs.nsecs start_time: 1785391199.647179064 secs.nsecs elapsed_time: 206.466440621 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 | 1 33 33 32768: 0 0 0 | 2 66 100 llite.lustre-ffff9e3c49a12800.read_ahead_stats= snapshot_time 1785391406.139344042 secs.nsecs start_time 1785391199.674195396 secs.nsecs elapsed_time 206.465148646 secs.nsecs hits 52679 samples [pages] misses 3516 samples [pages] readpage_not_consecutive 5302 samples [pages] zero_size_window 52679 samples [pages] failed_to_fast_read 3516 samples [pages] readahead_pages 3516 samples [pages] 2 15 52679