== sanity test 101a: check read-ahead for random reads === 09:09:29 (1785935369) nreads: 10000 file size: 96MB 180.126336s, 2.12733MB/s osc.lustre-OST0000-osc-ffff9852c667b800.rpc_stats= snapshot_time: 1785935575.207025039 secs.nsecs start_time: 1785935370.929504023 secs.nsecs elapsed_time: 204.277521016 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: 0 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 1 0 0 | 0 0 7 16: 3891 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: 3893 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 2 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: 4 0 0 | 0 0 11 32: 5 0 0 | 0 0 11 64: 13 0 0 | 0 0 11 128: 20 0 1 | 0 0 11 256: 37 0 2 | 0 0 11 512: 85 2 4 | 0 0 11 1024: 152 3 8 | 1 3 14 2048: 334 8 16 | 2 7 22 4096: 641 16 33 | 4 14 37 8192: 1250 32 65 | 8 29 66 16384: 1350 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: 0 0 0 | 0 0 0 4096: 305 7 7 | 0 0 0 8192: 1190 30 38 | 0 0 0 16384: 1421 36 74 | 1 3 3 32768: 841 21 96 | 1 3 7 65536: 218 5 102 | 12 44 51 131072: 7 0 102 | 11 40 92 262144: 2 0 102 | 2 7 100 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-ffff9852c667b800.rpc_stats= snapshot_time: 1785935575.208827072 secs.nsecs start_time: 1785935370.929533150 secs.nsecs elapsed_time: 204.279293922 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 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 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 | 1 33 33 8192: 0 0 0 | 0 0 33 16384: 0 0 0 | 1 33 66 32768: 0 0 0 | 1 33 100 llite.lustre-ffff9852c667b800.read_ahead_stats= snapshot_time 1785935575.243002391 secs.nsecs start_time 1785935370.954030082 secs.nsecs elapsed_time 204.288972309 secs.nsecs hits 58359 samples [pages] misses 3893 samples [pages] readpage_not_consecutive 5844 samples [pages] zero_size_window 58359 samples [pages] failed_to_fast_read 3893 samples [pages] readahead_pages 3893 samples [pages] 3 15 58359