== sanity test 101a: check read-ahead for random reads === 02:04:18 (1785391458) nreads: 10000 file size: 96MB 180.207283s, 1.99037MB/s osc.lustre-OST0000-osc-ffff955c8a636800.rpc_stats= snapshot_time: 1785391665.127371033 secs.nsecs start_time: 1785391460.922308757 secs.nsecs elapsed_time: 204.205062276 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: 0 0 0 | 1 3 7 16: 3570 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: 3573 100 100 | 27 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 3 0 0 | 0 0 11 32: 6 0 0 | 0 0 11 64: 10 0 0 | 0 0 11 128: 17 0 1 | 0 0 11 256: 36 1 2 | 0 0 11 512: 77 2 4 | 0 0 11 1024: 135 3 8 | 1 3 14 2048: 307 8 16 | 2 7 22 4096: 582 16 32 | 4 14 37 8192: 1166 32 65 | 8 29 66 16384: 1230 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: 1 0 0 | 0 0 0 4096: 193 5 5 | 0 0 0 8192: 847 23 29 | 0 0 0 16384: 1567 43 72 | 2 7 7 32768: 857 23 96 | 1 3 11 65536: 186 5 102 | 21 77 88 131072: 5 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-ffff955c8a636800.rpc_stats= snapshot_time: 1785391665.127511508 secs.nsecs start_time: 1785391460.922333847 secs.nsecs elapsed_time: 204.205177661 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 3 100 100 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 | 0 0 0 32768: 0 0 0 | 2 66 66 65536: 0 0 0 | 0 0 66 131072: 0 0 0 | 1 33 100 llite.lustre-ffff955c8a636800.read_ahead_stats= snapshot_time 1785391665.166421087 secs.nsecs start_time 1785391460.961390082 secs.nsecs elapsed_time 204.205031005 secs.nsecs hits 53547 samples [pages] misses 3573 samples [pages] readpage_not_consecutive 5471 samples [pages] zero_size_window 53547 samples [pages] failed_to_fast_read 3572 samples [pages] readahead_pages 3573 samples [pages] 1 15 53547