== sanity test 101a: check read-ahead for random reads === 15:11:07 (1789067467) nreads: 10000 file size: 96MB 180.482696s, 3.01277MB/s osc.lustre-OST0000-osc-ffff8c1c7a57d000.rpc_stats= snapshot_time: 1789067669.060545746 secs.nsecs start_time: 1789067469.413145427 secs.nsecs elapsed_time: 199.647400319 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-ffff8c1c7a57d000.rpc_stats= snapshot_time: 1789067669.060694181 secs.nsecs start_time: 1789067469.413181010 secs.nsecs elapsed_time: 199.647513171 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: 1 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5440 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: 5443 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 55 1 2 | 0 0 4 512: 114 2 4 | 0 0 4 1024: 197 3 7 | 1 4 8 2048: 468 8 16 | 2 8 16 4096: 896 16 32 | 4 16 32 8192: 1785 32 65 | 8 32 64 16384: 1873 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: 181 3 3 | 0 0 0 8192: 2754 50 53 | 0 0 0 16384: 2149 39 93 | 0 0 0 32768: 460 8 101 | 4 16 16 65536: 27 0 102 | 18 72 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-ffff8c1c7a57d000.read_ahead_stats= snapshot_time 1789067669.071480589 secs.nsecs start_time 1789067469.444982081 secs.nsecs elapsed_time 199.626498508 secs.nsecs hits 81602 samples [pages] misses 5443 samples [pages] readpage_not_consecutive 8292 samples [pages] zero_size_window 81602 samples [pages] failed_to_fast_read 5443 samples [pages] readahead_pages 5443 samples [pages] 1 15 81602