== sanity test 101a: check read-ahead for random reads === 05:06:58 (1774429618) nreads: 10000 file size: 96MB 110.715703s, 5.9193MB/s osc.lustre-OST0000-osc-ffff8e1ecb17e000.rpc_stats= snapshot_time: 1774429739.993371977 secs.nsecs start_time: 1774429619.894571093 secs.nsecs elapsed_time: 120.098800884 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 | 0 0 0 2: 2 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 6563 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6572 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 6 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 22 0 0 | 0 0 4 128: 33 0 1 | 0 0 4 256: 71 1 2 | 0 0 4 512: 135 2 4 | 0 0 4 1024: 262 3 8 | 1 4 8 2048: 557 8 16 | 2 8 16 4096: 1096 16 33 | 4 16 32 8192: 2186 33 66 | 8 32 64 16384: 2192 33 100 | 9 36 100 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: 87 1 1 | 0 0 0 4096: 3276 49 51 | 0 0 0 8192: 3063 46 97 | 0 0 0 16384: 300 4 102 | 3 12 12 32768: 2 0 102 | 21 84 96 65536: 0 0 102 | 1 4 100 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-ffff8e1ecb17e000.rpc_stats= snapshot_time: 1774429739.993461382 secs.nsecs start_time: 1774429619.894600979 secs.nsecs elapsed_time: 120.098860403 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-ffff8e1ecb17e000.read_ahead_stats= snapshot_time 1774429740.003235192 secs.nsecs start_time 1774429619.904722824 secs.nsecs elapsed_time 120.098512368 secs.nsecs hits 98427 samples [pages] misses 6572 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98427 samples [pages] failed_to_fast_read 6572 samples [pages] readahead_pages 6571 samples [pages] 1 15 98427