== sanity test 101a: check read-ahead for random reads === 18:46:02 (1787784362) nreads: 10000 file size: 96MB 180.241312s, 2.54739MB/s osc.lustre-OST0000-osc-ffff8952c4f99000.rpc_stats= snapshot_time: 1787784568.093252244 secs.nsecs start_time: 1787784364.183158184 secs.nsecs elapsed_time: 203.910094060 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: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 1 0 0 | 0 0 3 16: 4610 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: 4611 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 4 0 0 | 0 0 7 32: 6 0 0 | 0 0 7 64: 13 0 0 | 0 0 7 128: 22 0 1 | 0 0 7 256: 42 0 1 | 0 0 7 512: 96 2 4 | 0 0 7 1024: 184 3 8 | 1 3 11 2048: 393 8 16 | 2 7 19 4096: 781 16 33 | 4 15 34 8192: 1495 32 65 | 8 30 65 16384: 1571 34 100 | 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: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 20 0 0 | 0 0 0 8192: 1620 35 35 | 1 3 3 16384: 2359 51 86 | 0 0 3 32768: 693 15 101 | 0 0 3 65536: 27 0 102 | 11 42 46 131072: 0 0 102 | 14 53 100 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-ffff8952c4f99000.rpc_stats= snapshot_time: 1787784568.093393882 secs.nsecs start_time: 1787784364.183187776 secs.nsecs elapsed_time: 203.910206106 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 | 3 75 75 2: 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 1 25 25 16384: 0 0 0 | 1 25 50 32768: 0 0 0 | 0 0 50 65536: 0 0 0 | 2 50 100 llite.lustre-ffff8952c4f99000.read_ahead_stats= snapshot_time 1787784568.121900686 secs.nsecs start_time 1787784364.205643233 secs.nsecs elapsed_time 203.916257453 secs.nsecs hits 69136 samples [pages] misses 4611 samples [pages] readpage_not_consecutive 7002 samples [pages] zero_size_window 69136 samples [pages] failed_to_fast_read 4611 samples [pages] readahead_pages 4611 samples [pages] 4 15 69136