== sanity test 101a: check read-ahead for random reads === 00:44:38 (1783140278) nreads: 10000 file size: 96MB 180.507552s, 3.0374MB/s osc.lustre-OST0000-osc-ffff9f3204f02800.rpc_stats= snapshot_time: 1783140480.117377887 secs.nsecs start_time: 1783140279.938311249 secs.nsecs elapsed_time: 200.179066638 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 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffff9f3204f02800.rpc_stats= snapshot_time: 1783140480.117473176 secs.nsecs start_time: 1783140279.938346966 secs.nsecs elapsed_time: 200.179126210 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: 10 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5485 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5498 99 99 | 25 100 100 2: 1 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 4 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 24 0 1 | 0 0 4 256: 54 0 2 | 0 0 4 512: 115 2 4 | 0 0 4 1024: 201 3 7 | 1 4 8 2048: 474 8 16 | 2 8 16 4096: 897 16 32 | 4 16 32 8192: 1809 32 65 | 8 32 64 16384: 1893 34 100 | 9 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: 116 2 2 | 0 0 0 8192: 2752 50 52 | 0 0 0 16384: 2374 43 95 | 0 0 0 32768: 359 6 101 | 1 4 4 65536: 27 0 102 | 21 84 88 131072: 0 0 102 | 3 12 100 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-ffff9f3204f02800.read_ahead_stats= snapshot_time 1783140480.152775100 secs.nsecs start_time 1783140279.957079160 secs.nsecs elapsed_time 200.195695940 secs.nsecs hits 82288 samples [pages] misses 5499 samples [pages] readpage_not_consecutive 8361 samples [pages] zero_size_window 82288 samples [pages] failed_to_fast_read 5499 samples [pages] readahead_pages 5499 samples [pages] 2 15 82288