== sanity test 101a: check read-ahead for random reads === 09:29:31 (1769092171) nreads: 10000 file size: 96MB 59.047000s, 11.099MB/s osc.lustre-OST0000-osc-ffff978c85dd8800.rpc_stats= snapshot_time: 1769092240.468258890 secs.nsecs start_time: 1769092171.710235464 secs.nsecs elapsed_time: 68.758023426 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: 2 0 0 | 0 0 3 8: 2 0 0 | 1 3 7 16: 6419 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6423 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 5 0 0 | 0 0 11 32: 8 0 0 | 0 0 11 64: 20 0 0 | 0 0 11 128: 29 0 1 | 0 0 11 256: 69 1 2 | 0 0 11 512: 135 2 4 | 0 0 11 1024: 273 4 8 | 1 3 14 2048: 555 8 17 | 2 7 22 4096: 1104 17 34 | 4 14 37 8192: 2158 33 67 | 8 29 66 16384: 2062 32 100 | 9 33 100 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: 11 0 0 | 0 0 0 2048: 6270 97 97 | 0 0 0 4096: 289 4 102 | 1 3 3 8192: 5 0 102 | 19 70 74 16384: 0 0 102 | 7 25 100 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-ffff978c85dd8800.rpc_stats= snapshot_time: 1769092240.468452943 secs.nsecs start_time: 1769092171.710268589 secs.nsecs elapsed_time: 68.758184354 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 33 33 2: 0 0 0 | 1 33 66 3: 0 0 0 | 1 33 100 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 | 1 33 33 4096: 0 0 0 | 2 66 100 llite.lustre-ffff978c85dd8800.read_ahead_stats= snapshot_time 1769092240.475085112 secs.nsecs start_time 1769092171.717911130 secs.nsecs elapsed_time 68.757173982 secs.nsecs hits 96275 samples [pages] misses 6423 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96275 samples [pages] failed_to_fast_read 6423 samples [pages] readahead_pages 6423 samples [pages] 2 15 96275