== sanity test 101a: check read-ahead for random reads === 22:59:05 (1787367545) nreads: 10000 file size: 96MB 180.571551s, 3.00911MB/s osc.lustre-OST0000-osc-ffff8cfdd09f8800.rpc_stats= snapshot_time: 1787367747.096653726 secs.nsecs start_time: 1787367547.614172080 secs.nsecs elapsed_time: 199.482481646 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: 2 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5428 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 1 3 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 1 3 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: 5435 100 100 | 24 88 88 2: 0 0 100 | 2 7 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 4 0 0 | 0 0 3 32: 7 0 0 | 0 0 3 64: 15 0 0 | 0 0 3 128: 23 0 1 | 0 0 3 256: 55 1 2 | 0 0 3 512: 115 2 4 | 0 0 3 1024: 177 3 7 | 3 11 14 2048: 472 8 16 | 2 7 22 4096: 893 16 32 | 4 14 37 8192: 1792 32 65 | 8 29 66 16384: 1876 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: 241 4 4 | 0 0 0 8192: 2612 48 52 | 0 0 0 16384: 2227 40 93 | 0 0 0 32768: 454 8 101 | 7 25 25 65536: 29 0 102 | 18 66 92 131072: 0 0 102 | 2 7 100 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 osc.lustre-OST0001-osc-ffff8cfdd09f8800.rpc_stats= snapshot_time: 1787367747.096792179 secs.nsecs start_time: 1787367547.614203495 secs.nsecs elapsed_time: 199.482588684 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 llite.lustre-ffff8cfdd09f8800.read_ahead_stats= snapshot_time 1787367747.107699757 secs.nsecs start_time 1787367547.657134378 secs.nsecs elapsed_time 199.450565379 secs.nsecs hits 81411 samples [pages] misses 5435 samples [pages] readpage_not_consecutive 8286 samples [pages] zero_size_window 81411 samples [pages] failed_to_fast_read 5435 samples [pages] readahead_pages 5435 samples [pages] 1 15 81411