== sanity test 101a: check read-ahead for random reads === 05:54:54 (1768128894) nreads: 10000 file size: 96MB 64.617680s, 10.1421MB/s osc.lustre-OST0000-osc-ffff90ab48321800.rpc_stats= snapshot_time: 1768128970.470256054 secs.nsecs start_time: 1768128895.462181335 secs.nsecs elapsed_time: 75.008074719 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 10 10 2: 1 0 0 | 0 0 10 4: 9 0 0 | 0 0 10 8: 2 0 0 | 0 0 10 16: 6432 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6444 100 100 | 26 92 92 2: 0 0 100 | 2 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 8 0 0 | 0 0 14 64: 22 0 0 | 0 0 14 128: 29 0 1 | 0 0 14 256: 69 1 2 | 0 0 14 512: 135 2 4 | 0 0 14 1024: 271 4 8 | 1 3 17 2048: 553 8 17 | 2 7 25 4096: 1096 17 34 | 4 14 39 8192: 2170 33 67 | 8 28 67 16384: 2081 32 100 | 9 32 100 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: 8 0 0 | 0 0 0 2048: 5670 87 88 | 1 3 3 4096: 907 14 102 | 2 7 10 8192: 10 0 102 | 13 46 57 16384: 2 0 102 | 12 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-ffff90ab48321800.rpc_stats= snapshot_time: 1768128970.470348584 secs.nsecs start_time: 1768128895.462245772 secs.nsecs elapsed_time: 75.008102812 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 | 3 100 100 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 | 2 66 66 8192: 0 0 0 | 0 0 66 16384: 0 0 0 | 0 0 66 32768: 0 0 0 | 1 33 100 llite.lustre-ffff90ab48321800.read_ahead_stats= snapshot_time 1768128970.474458852 secs.nsecs start_time 1768128895.471164599 secs.nsecs elapsed_time 75.003294253 secs.nsecs hits 96462 samples [pages] misses 6444 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96462 samples [pages] failed_to_fast_read 6444 samples [pages] readahead_pages 6444 samples [pages] 1 15 96462