== sanity test 101a: check read-ahead for random reads === 12:32:42 (1786033962) nreads: 10000 file size: 96MB 180.894006s, 1.97339MB/s osc.lustre-OST0000-osc-ffff968708ea0000.rpc_stats= snapshot_time: 1786034167.139495324 secs.nsecs start_time: 1786033963.664468259 secs.nsecs elapsed_time: 203.475027065 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 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 3556 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: 3557 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 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: 3 0 0 | 0 0 4 32: 5 0 0 | 0 0 4 64: 12 0 0 | 0 0 4 128: 17 0 1 | 0 0 4 256: 35 0 2 | 0 0 4 512: 75 2 4 | 0 0 4 1024: 141 3 8 | 1 4 8 2048: 305 8 16 | 2 8 16 4096: 583 16 33 | 4 16 32 8192: 1151 32 65 | 8 32 64 16384: 1227 34 100 | 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: 0 0 0 | 0 0 0 4096: 271 7 7 | 0 0 0 8192: 813 22 30 | 0 0 0 16384: 1566 44 74 | 0 0 0 32768: 817 22 97 | 1 4 4 65536: 163 4 102 | 18 72 76 131072: 7 0 102 | 6 24 100 262144: 2 0 102 | 0 0 100 524288: 1 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-ffff968708ea0000.rpc_stats= snapshot_time: 1786034167.144103699 secs.nsecs start_time: 1786033963.664511434 secs.nsecs elapsed_time: 203.479592265 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-ffff968708ea0000.read_ahead_stats= snapshot_time 1786034167.181834999 secs.nsecs start_time 1786033963.696780881 secs.nsecs elapsed_time 203.485054118 secs.nsecs hits 53333 samples [pages] misses 3557 samples [pages] readpage_not_consecutive 5445 samples [pages] zero_size_window 53333 samples [pages] failed_to_fast_read 3557 samples [pages] readahead_pages 3557 samples [pages] 4 15 53333