== sanity test 101a: check read-ahead for random reads === 20:09:00 (1763341740) nreads: 10000 file size: 96MB 180.136815s, 3.51697MB/s osc.lustre-OST0000-osc-ffff8b99d8f67000.rpc_stats= snapshot_time: 1763341943.116485510 secs.nsecs start_time: 1763341743.097231658 secs.nsecs elapsed_time: 200.019253852 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 2 100 100 osc.lustre-OST0001-osc-ffff8b99d8f67000.rpc_stats= snapshot_time: 1763341943.116579598 secs.nsecs start_time: 1763341743.097264077 secs.nsecs elapsed_time: 200.019315521 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: 2 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 7 0 0 | 1 3 10 16: 6298 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6301 99 99 | 27 96 96 2: 8 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 6 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 21 0 0 | 0 0 14 128: 30 0 1 | 0 0 14 256: 68 1 2 | 0 0 14 512: 127 2 4 | 0 0 14 1024: 254 4 8 | 1 3 17 2048: 532 8 16 | 2 7 25 4096: 1048 16 33 | 4 14 39 8192: 2077 32 66 | 8 28 67 16384: 2135 33 100 | 9 32 100 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: 553 8 8 | 0 0 0 8192: 3309 52 61 | 2 7 7 16384: 2393 37 99 | 1 3 10 32768: 198 3 102 | 1 3 14 65536: 3 0 102 | 20 71 85 131072: 1 0 102 | 4 14 100 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 llite.lustre-ffff8b99d8f67000.read_ahead_stats= snapshot_time 1763341943.129471868 secs.nsecs start_time 1763341743.140847513 secs.nsecs elapsed_time 199.988624355 secs.nsecs hits 94467 samples [pages] misses 6309 samples [pages] readpage_not_consecutive 9659 samples [pages] zero_size_window 94467 samples [pages] failed_to_fast_read 6309 samples [pages] readahead_pages 6309 samples [pages] 1 15 94467