== sanity test 101a: check read-ahead for random reads === 01:58:38 (1785391118) nreads: 10000 file size: 96MB 180.829370s, 2.6076MB/s osc.lustre-OST0000-osc-ffff9d1358088000.rpc_stats= snapshot_time: 1785391331.218194988 secs.nsecs start_time: 1785391120.407275806 secs.nsecs elapsed_time: 210.810919182 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 2: 0 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 3662 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 3667 100 100 | 97 97 97 2: 0 0 100 | 3 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 3 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 11 0 0 | 0 0 1 128: 19 0 1 | 0 0 1 256: 37 1 2 | 1 1 2 512: 78 2 4 | 2 2 4 1024: 147 4 8 | 4 4 8 2048: 324 8 17 | 8 8 16 4096: 624 17 34 | 16 16 32 8192: 1224 33 67 | 32 32 64 16384: 1191 32 100 | 36 36 100 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: 122 3 3 | 0 0 0 8192: 1099 29 33 | 2 2 2 16384: 1520 41 74 | 18 18 20 32768: 782 21 96 | 56 56 76 65536: 221 6 102 | 22 22 98 131072: 8 0 102 | 3 3 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 osc.lustre-OST0001-osc-ffff9d1358088000.rpc_stats= snapshot_time: 1785391331.220799394 secs.nsecs start_time: 1785391120.407305296 secs.nsecs elapsed_time: 210.813494098 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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 | 1 100 100 llite.lustre-ffff9d1358088000.read_ahead_stats= snapshot_time 1785391331.261089161 secs.nsecs start_time 1785391120.423736012 secs.nsecs elapsed_time 210.837353149 secs.nsecs hits 54925 samples [pages] misses 3667 samples [pages] readpage_not_consecutive 7191 samples [pages] zero_size_window 54925 samples [pages] failed_to_fast_read 3667 samples [pages] readahead_pages 3667 samples [pages] 3 15 54925