== sanity test 101a: check read-ahead for random reads === 04:04:41 (1781683481) nreads: 10000 file size: 96MB 52.660005s, 12.4451MB/s osc.lustre-OST0000-osc-ffff8aefc5f2b000.rpc_stats= snapshot_time: 1781683546.276491783 secs.nsecs start_time: 1781683482.002723254 secs.nsecs elapsed_time: 64.273768529 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: 1 0 0 | 1 3 3 2: 2 0 0 | 0 0 3 4: 1 0 0 | 0 0 3 8: 6 0 0 | 0 0 3 16: 6452 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6462 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 5 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 18 0 0 | 0 0 7 128: 31 0 1 | 0 0 7 256: 73 1 2 | 0 0 7 512: 134 2 4 | 0 0 7 1024: 261 4 8 | 1 3 11 2048: 554 8 16 | 2 7 19 4096: 1084 16 33 | 4 15 34 8192: 2187 33 67 | 8 30 65 16384: 2102 32 100 | 9 34 100 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: 98 1 1 | 0 0 0 2048: 6444 99 101 | 1 3 3 4096: 71 1 102 | 0 0 3 8192: 3 0 102 | 14 53 57 16384: 0 0 102 | 11 42 100 32768: 0 0 102 | 0 0 100 65536: 0 0 102 | 0 0 100 131072: 0 0 102 | 0 0 100 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-ffff8aefc5f2b000.rpc_stats= snapshot_time: 1781683546.276629003 secs.nsecs start_time: 1781683482.002743569 secs.nsecs elapsed_time: 64.273885434 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 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 25 25 2: 0 0 0 | 2 50 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 3 75 75 4096: 0 0 0 | 1 25 100 llite.lustre-ffff8aefc5f2b000.read_ahead_stats= snapshot_time 1781683546.283360778 secs.nsecs start_time 1781683482.009134932 secs.nsecs elapsed_time 64.274225846 secs.nsecs hits 96768 samples [pages] misses 6462 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96768 samples [pages] failed_to_fast_read 6462 samples [pages] readahead_pages 6461 samples [pages] 1 15 96768