== sanity test 101a: check read-ahead for random reads === 06:00:32 (1777024832) nreads: 10000 file size: 96MB 57.210439s, 11.4553MB/s osc.lustre-OST0000-osc-ffff99da5120b000.rpc_stats= snapshot_time: 1777024899.218344204 secs.nsecs start_time: 1777024832.891183605 secs.nsecs elapsed_time: 66.327160599 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: 3 0 0 | 0 0 3 4: 1 0 0 | 0 0 3 8: 5 0 0 | 0 0 3 16: 6431 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: 6441 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: 6 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 22 0 0 | 0 0 7 128: 31 0 1 | 0 0 7 256: 72 1 2 | 0 0 7 512: 135 2 4 | 0 0 7 1024: 265 4 8 | 1 3 11 2048: 555 8 17 | 2 7 19 4096: 1095 17 34 | 4 15 34 8192: 2182 33 67 | 8 30 65 16384: 2066 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: 14 0 0 | 0 0 0 2048: 6199 96 96 | 1 3 3 4096: 377 5 102 | 0 0 3 8192: 4 0 102 | 6 23 26 16384: 0 0 102 | 19 73 100 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-ffff99da5120b000.rpc_stats= snapshot_time: 1777024899.218436623 secs.nsecs start_time: 1777024832.891224139 secs.nsecs elapsed_time: 66.327212484 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 | 2 50 50 4096: 0 0 0 | 2 50 100 llite.lustre-ffff99da5120b000.read_ahead_stats= snapshot_time 1777024899.222627506 secs.nsecs start_time 1777024832.897601220 secs.nsecs elapsed_time 66.325026286 secs.nsecs hits 96472 samples [pages] misses 6441 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96473 samples [pages] failed_to_fast_read 6441 samples [pages] readahead_pages 6440 samples [pages] 1 15 96472