== sanity test 101a: check read-ahead for random reads === 17:36:41 (1781818601) nreads: 10000 file size: 96MB 180.596229s, 2.97567MB/s osc.lustre-OST0000-osc-ffff8efe58d33000.rpc_stats= snapshot_time: 1781818796.128061332 secs.nsecs start_time: 1781818602.771858567 secs.nsecs elapsed_time: 193.356202765 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 | 3 100 100 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 | 0 0 0 8192: 0 0 0 | 1 33 33 16384: 0 0 0 | 0 0 33 32768: 0 0 0 | 2 66 100 osc.lustre-OST0001-osc-ffff8efe58d33000.rpc_stats= snapshot_time: 1781818796.128156744 secs.nsecs start_time: 1781818602.771955214 secs.nsecs elapsed_time: 193.356201530 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 3 3 2: 1 0 0 | 0 0 3 4: 2 0 0 | 0 0 3 8: 5 0 0 | 1 3 7 16: 5401 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: 5409 100 100 | 25 92 92 2: 0 0 100 | 2 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 7 0 0 | 0 0 11 64: 15 0 0 | 0 0 11 128: 23 0 0 | 0 0 11 256: 54 0 1 | 0 0 11 512: 115 2 4 | 0 0 11 1024: 210 3 8 | 1 3 14 2048: 465 8 16 | 2 7 22 4096: 903 16 33 | 4 14 37 8192: 1776 32 66 | 8 29 66 16384: 1832 33 100 | 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: 674 12 12 | 0 0 0 8192: 2617 48 60 | 0 0 0 16384: 1634 30 91 | 0 0 0 32768: 526 9 100 | 10 37 37 65536: 81 1 102 | 13 48 85 131072: 3 0 102 | 4 14 100 262144: 1 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-ffff8efe58d33000.read_ahead_stats= snapshot_time 1781818796.151421827 secs.nsecs start_time 1781818602.784517547 secs.nsecs elapsed_time 193.366904280 secs.nsecs hits 81022 samples [pages] misses 5409 samples [pages] readpage_not_consecutive 8195 samples [pages] zero_size_window 81022 samples [pages] failed_to_fast_read 5409 samples [pages] readahead_pages 5409 samples [pages] 1 15 81022