== sanity test 101a: check read-ahead for random reads === 23:51:50 (1786420310) nreads: 10000 file size: 96MB 169.019539s, 3.87742MB/s osc.lustre-OST0000-osc-ffff9f7ac5155000.rpc_stats= snapshot_time: 1786420497.437804551 secs.nsecs start_time: 1786420311.832275224 secs.nsecs elapsed_time: 185.605529327 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 | 2 66 66 2: 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 1 33 33 16384: 0 0 0 | 1 33 66 32768: 0 0 0 | 0 0 66 65536: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff9f7ac5155000.rpc_stats= snapshot_time: 1786420497.437897691 secs.nsecs start_time: 1786420311.832315054 secs.nsecs elapsed_time: 185.605582637 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 7 7 2: 1 0 0 | 0 0 7 4: 5 0 0 | 0 0 7 8: 2 0 0 | 0 0 7 16: 6605 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 | 1 3 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6613 100 100 | 26 92 92 2: 0 0 100 | 2 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 3 10 10 1: 0 0 0 | 0 0 10 2: 0 0 0 | 0 0 10 4: 0 0 0 | 0 0 10 8: 0 0 0 | 0 0 10 16: 6 0 0 | 0 0 10 32: 7 0 0 | 0 0 10 64: 22 0 0 | 0 0 10 128: 32 0 1 | 0 0 10 256: 59 0 1 | 1 3 14 512: 113 1 3 | 0 0 14 1024: 261 3 7 | 1 3 17 2048: 558 8 16 | 2 7 25 4096: 1096 16 32 | 4 14 39 8192: 2185 33 65 | 8 28 67 16384: 2270 34 100 | 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: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 664 10 10 | 0 0 0 8192: 4734 71 81 | 0 0 0 16384: 1055 15 97 | 1 3 3 32768: 233 3 101 | 4 14 17 65536: 70 1 102 | 10 35 53 131072: 12 0 102 | 10 35 89 262144: 0 0 102 | 3 10 100 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 llite.lustre-ffff9f7ac5155000.read_ahead_stats= snapshot_time 1786420497.450788320 secs.nsecs start_time 1786420311.844574771 secs.nsecs elapsed_time 185.606213549 secs.nsecs hits 99071 samples [pages] misses 6613 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 99071 samples [pages] failed_to_fast_read 6613 samples [pages] readahead_pages 6613 samples [pages] 1 15 99071